Transfer case for vehicle and vehicle

Abstract

The invention discloses a transfer case for a vehicle and the vehicle, and belongs to the technical field of vehicle transfer cases. The transfer case comprises a first shaft body, a first gear ring, a second shaft body, a transmission assembly and a driving assembly, the first shaft body is used for being in transmission connection with an engine of the vehicle, the first gear ring is in axial sliding connection and circumferential transmission connection with the first shaft body, one end of the second shaft body is provided with a tooth-shaped structure, and the tooth-shaped structure is opposite to the first gear ring; the transmission assembly is in transmission connection with the second shaft body and the middle transmission shaft. The driving assembly is located on the side, away from the tooth-shaped structure, of the first gear ring. The first gear ring is driven to move through the driving assembly, meshing and separation of the first gear ring and the tooth-shaped structure are achieved, and therefore connection and disconnection of a transmission path of power from an engine to the intermediate transmission shaft are achieved, the intermediate transmission shaft is prevented from being in a rotating state all the time, and vehicle fuel consumption caused by idling of the intermediate transmission shaft is reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of vehicle transfer cases, and in particular to a transfer case for a vehicle and a vehicle. Background Art

[0002] The transfer case is an important device for distributing the power of the engine. In addition to normal road conditions, in order to meet the driving needs of the vehicle in intense driving, extremely harsh road conditions with ultra-low adhesion, and vehicles requiring great traction, the transfer case can transfer part of the power output by the engine to the intermediate drive shaft and the rear-wheel drive axle in turn to enable the vehicle to have four-wheel drive capabilities.

[0003] In the related art, the transfer case of a four-wheel drive vehicle always maintains a transmission connection with the intermediate transmission shaft, and the vehicle starts and shuts down the four-wheel drive function by connecting and disconnecting the intermediate transmission shaft and the rear-wheel drive axle.

[0004] Therefore, as long as the car is in motion, regardless of whether the driving scenario requires the four-wheel drive function, the transfer case will transmit the engine's output torque to the intermediate drive shaft, causing it to always rotate. The always rotating intermediate drive shaft will result in higher fuel consumption of the vehicle. Summary of the invention

[0005] The embodiment of the present disclosure provides a transfer case for a vehicle and a vehicle, which can solve the above technical problems existing in the related art. The technical solution is as follows:

[0006] In a first aspect, a transfer case for a vehicle is provided, the transfer case comprising a first shaft body, a first ring gear, a second shaft body, a transmission assembly and a drive assembly;

[0007] The first shaft is used for transmission connection with the engine of the vehicle;

[0008] The first gear ring is sleeved on the first shaft body, and the first gear ring is axially slidably connected to the first shaft body and circumferentially transmission connected to the first shaft body;

[0009] The second shaft body is sleeved on the first shaft body, one end of the second shaft body has a toothed structure, and the toothed structure is opposite to the first gear ring;

[0010] The transmission assembly is respectively connected to the second shaft and the intermediate transmission shaft;

[0011] The drive assembly is located on a side of the first gear ring away from the toothed structure, and the drive assembly is used for:

[0012] driving the first gear ring to move toward the toothed structure so that the first gear ring is meshed with the toothed structure; or,

[0013] The first gear ring is driven to move in a direction away from the toothed structure, so that the first gear ring is separated from the toothed structure.

[0014] In some possible implementations, the driving assembly includes an electromagnetic coil and a power source, the electromagnetic coil is electrically connected to the power source, and the electromagnetic coil is used to drive the movement of the first gear ring.

[0015] In some possible implementations, the transfer case further includes a first bearing, and the first bearing is located between the first shaft body and the second shaft body, and is connected to the first shaft body and the second shaft body, respectively.

[0016] In some possible implementations, the transfer case further includes a second bearing, the second bearing is sleeved on the first shaft body or the second shaft body, and the second bearing is used to support and fix the first shaft body or the second shaft body.

[0017] In some possible implementations, the transmission assembly comprises a bevel gear ring and a bevel gear shaft, the bevel gear ring is connected to the second shaft body, one end of the bevel gear shaft is meshed with the bevel gear ring, and the other end of the bevel gear shaft is transmission-connected to the intermediate transmission shaft.

[0018] In some possible implementations, the bevel gear ring is welded to the second shaft body.

[0019] In some possible implementations, the second shaft body has a protrusion, and the protrusion is connected to the bevel gear ring.

[0020] In some possible implementations, the transmission assembly further includes a third bearing, and the third bearing is sleeved on the bevel gear shaft, and the third bearing is used to support and fix the bevel gear shaft.

[0021] In some possible implementations, the third bearing is a multi-row bearing.

[0022] In a second aspect, a vehicle is provided, comprising a transfer case as described in any one of the first aspects.

[0023] The beneficial effects of the technical solution provided by the present disclosure include at least:

[0024] In the present disclosure, the first ring gear is driven to move by a driving assembly to achieve engagement and disengagement of the first ring gear with the toothed structure, thereby achieving connection and disconnection of the power transmission path from the engine to the intermediate transmission shaft, thereby preventing the intermediate transmission shaft from always being in a rotating state and reducing vehicle fuel consumption caused by idling of the intermediate transmission shaft.

[0025] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 It is a structural schematic diagram of a transfer case provided in an embodiment of the present disclosure.

[0028] Figure 2 It is a cross-sectional schematic diagram of a transfer case provided in an embodiment of the present disclosure.

[0029] Figure 3 This is one of the working principle diagrams of a driving component provided in an embodiment of the present disclosure.

[0030] Figure 4 This is the second working principle diagram of a driving component provided in an embodiment of the present disclosure.

[0031] Reference numerals:

[0032] 1. The first axis;

[0033] 2. The first gear ring;

[0034] 3. a second shaft body, 31. a tooth-shaped structure, 32. a protrusion;

[0035] 4. Transmission assembly, 41. Bevel gear ring, 42. Bevel gear shaft, 43. Third bearing;

[0036] 5. driving assembly, 51. electromagnetic coil;

[0037] 6. First bearing;

[0038] 7. Second bearing;

[0039] 100. Intermediate transmission shaft.

[0040] The above drawings show clear embodiments of the present disclosure, which will be described in more detail below. These drawings and text descriptions are not intended to limit the scope of the present disclosure in any way, but to illustrate the concepts of the present disclosure to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0041] In order to make the objectives, technical solutions and advantages of the present disclosure more clear, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

[0042] The transfer case is an important device for distributing the power of the engine. Under normal road conditions, the vehicle is in front-wheel drive mode, that is, the output power of the engine is transmitted to the front wheels of the vehicle through the transmission and the front-wheel drive axle; in addition to normal road conditions, in order to meet the driving needs of the vehicle in intense driving, extremely harsh road conditions with ultra-low adhesion, and vehicles requiring great traction, the vehicle turns on the four-wheel drive mode, that is, the transfer case transmits part of the power output of the engine to the rear wheels of the vehicle through the intermediate drive shaft and the rear-wheel drive axle in turn, so that the vehicle has four-wheel drive capabilities.

[0043] In the related art, the transfer case of the vehicle always maintains a transmission connection with the intermediate transmission shaft, and the vehicle only starts and shuts down the four-wheel drive function by connecting and disconnecting the intermediate transmission shaft and the rear-wheel drive axle. The specific situation is as follows:

[0044] 1. The vehicle is in front-wheel drive mode

[0045] The output power of the engine is transmitted to the front wheels of the vehicle through the front-wheel drive axle, and the output power of the engine is also transmitted to the intermediate drive shaft through the transfer case. Since there is a clutch mechanism between the intermediate drive shaft and the rear-wheel drive axle, and the clutch mechanism is in a disconnected state, the transfer case is in a working state and the intermediate drive shaft is in a rotating state.

[0046] 2. The vehicle is in four-wheel drive mode

[0047] The output power of the engine is transmitted to the front wheels of the vehicle through the front-wheel drive axle, and the output power of the engine is also transmitted to the intermediate transmission shaft through the transfer case. Since there is a clutch mechanism between the intermediate transmission shaft and the rear-wheel drive axle, and the clutch mechanism is in a coupled state, the output power is transmitted from the intermediate transmission shaft to the rear-wheel drive axle and the rear wheels. Therefore, the transfer case is in a working state, and the intermediate transmission shaft is in a rotating state.

[0048] It can be seen from this that when using the transfer case structure in the relevant technology, as long as the car is in motion, regardless of whether the vehicle is in four-wheel drive mode, the transfer case will transfer part of the engine's output torque to the intermediate drive shaft, causing it to always rotate. The always rotating intermediate drive shaft then causes the vehicle to consume more fuel.

[0049] Reference Figure 1 As shown, an embodiment of the present disclosure provides a transfer case for a vehicle, and the transfer case may include a first shaft body 1, a first ring gear 2, a second shaft body 3, a transmission assembly 4 and a drive assembly 5.

[0050] The first shaft 1 is used for transmission connection with the engine of the vehicle. The present disclosure does not specifically limit the connection method between the first shaft 1 and the engine, such as: transmission, coupling, etc.

[0051] Reference Figure 2 As shown, the first gear ring 2 is sleeved on the first shaft body 1, the first gear ring 2 is axially slidably connected to the first shaft body 1 and circumferentially transmitted, the second shaft body 3 is sleeved on the first shaft body 1, one end of the second shaft body 3 has a toothed structure 31, the toothed structure 31 is opposite to and adapted to the first gear ring 2, and the transmission assembly 4 is respectively connected to the second shaft body 3 and the intermediate transmission shaft 100 for transmission.

[0052] The engine drives the first shaft 1 to rotate, and the first shaft 1 drives the first gear ring 2 to rotate together. The present disclosure does not limit the specific connection method between the first gear ring 2 and the first shaft 1. For example, the outer wall of the first shaft 1 has spline teeth, and the inner wall of the first gear ring 2 has matching spline teeth. The spline teeth of the two mesh with each other, so that the first shaft 1 and the first gear ring 2 can move together in the circumferential direction. At the same time, the spline teeth of the two can slide relative to each other in the axial direction, so that the first shaft 1 and the first gear ring 2 can slide relative to each other in the axial direction.

[0053] Reference Figure 1 As shown, the drive component 5 is located on the side of the first gear ring 2 away from the tooth structure 31, and the drive component 5 is used to: drive the first gear ring 2 to move toward the direction close to the tooth structure 31 so that the first gear ring 2 engages with the tooth structure 31; or drive the first gear ring 2 to move in the direction away from the tooth structure 31 so that the first gear ring 2 is separated from the tooth structure 31.

[0054] The specific working conditions of the vehicle using the transfer case disclosed in the present invention are as follows:

[0055] 1. The vehicle is in four-wheel drive mode

[0056] The driving assembly 5 drives the first gear ring 2 to move toward the direction close to the toothed structure 31 , so that the first gear ring 2 is meshed with the toothed structure 31 .

[0057] After the first ring gear 2 is meshed with the toothed structure 31, the output power of the engine is transmitted to the intermediate transmission shaft 100 through the first shaft 1, the first ring gear 2, the second shaft 3 and the transmission assembly 4 in sequence, and then transmitted to the rear wheel drive axle and the rear wheel meshed with the intermediate transmission shaft 100, thereby realizing the active rotation of the rear wheel and providing power for the vehicle.

[0058] At the same time, the engine's output power is transmitted to the front wheels of the vehicle through the front-wheel drive axle. Therefore, the vehicle is in four-wheel drive mode, which is suitable for driving scenarios such as intense driving, extremely harsh road conditions with ultra-low adhesion, and vehicles that are trapped and require great traction to escape from the trapped site.

[0059] 2. The vehicle is in front-wheel drive mode

[0060] The driving assembly 5 drives the first gear ring 2 to move in a direction away from the toothed structure 31 , so that the first gear ring 2 is separated from the toothed structure 31 .

[0061] The engine's output power is transmitted to the vehicle's front wheels through the front-wheel drive axle.

[0062] After the first gear ring 2 is separated from the toothed structure 31 , the output power of the engine drives the first shaft 1 to drive the first gear ring 2 to rotate, but the first gear ring 2 and the second shaft 3 do not have a transmission relationship, and the second shaft 3 will not drive the transmission assembly 4 and the intermediate transmission shaft 100 to work.

[0063] At this time, the vehicle only has the front wheels as power output wheels, and the vehicle is in front-wheel drive working mode, which is suitable for driving scenarios with good road conditions such as flat urban roads and highways.

[0064] It can be seen that when the vehicle is in the four-wheel working mode, the intermediate transmission shaft 100 is in a rotating state, transmitting power from the transfer case to the rear-wheel drive axle and the rear wheels; when the vehicle is not in the four-wheel working mode, the intermediate transmission shaft 100 is in a stationary state, thereby reducing the fuel consumption caused by the rotation of the intermediate transmission shaft 100.

[0065] At the same time, the intermediate transmission shaft 100 is in a stationary state, which can reduce the adverse effects such as vibration and noise caused by the high-speed rotation of the intermediate transmission shaft 100, and can also reduce the wear of the second shaft body 3, transmission assembly 4 and drive assembly 5 caused by power transmission, thereby increasing the service life of the transfer case.

[0066] In some embodiments, reference Figure 1 As shown, the driving assembly 5 may include an electromagnetic coil 51 and a power source (not shown in the drawings), the electromagnetic coil 51 is electrically connected to the power source, and the electromagnetic coil 51 is used to drive the movement of the first gear ring 2.

[0067] The first gear ring 2 is made of metal material, such as iron (Fe), cobalt (Co), nickel (Ni), aluminum nickel cobalt alloy, etc. When current passes through the electromagnetic coil 51, according to the Ampere loop theorem, a magnetic field is generated around the electromagnetic coil 51, and the magnitude and direction of the driving force generated by the electromagnetic coil 51 on the first gear ring 2 can be achieved by adjusting the direction and intensity of the current flowing through the electromagnetic coil 51.

[0068] When the electromagnetic coil 51 exerts a repulsive force on the first gear ring 2, refer to Figure 3 As shown, the first gear ring 2 is driven to move toward the direction close to the tooth structure 31, so that the first gear ring 2 is meshed with the tooth structure 31; when the electromagnetic coil 51 exerts an attraction force on the first gear ring 2, refer to Figure 4As shown, the first gear ring 2 is driven to move in a direction away from the toothed structure 31 so that the first gear ring 2 is separated from the toothed structure 31 .

[0069] The present disclosure does not specifically limit the power source, which may be a common battery (usually a lead-acid battery) used by the vehicle itself for starting and powering, or a dedicated battery that powers the electromagnetic coil 51 alone.

[0070] In some embodiments, the first gear ring 2 has a magnetic component at one end away from the tooth structure 31, and the magnetic component is made of permanent magnetic material, such as metal magnetic material, alloy magnetic material, ferrite magnetic material, etc., thereby ensuring the stability of the driving force of the electromagnetic coil 51 on the first gear ring 2.

[0071] In some embodiments, the driving assembly 5 may be a mechanical driving assembly, such as a crank slider mechanism, a cam mechanism, a screw mechanism, a chain sprocket mechanism, etc.

[0072] In some embodiments, reference Figure 1 As shown, the transfer case further includes a first bearing 6, which is located between the first shaft body 1 and the second shaft body 3, and is connected to the first shaft body 1 and the second shaft body 3 respectively.

[0073] Since the second shaft body 3 is sleeved on the first shaft body 1, and there is a speed difference between the first shaft body 1 and the second shaft body 3, the first bearing 6 can be a sleeve bearing. On the one hand, the first shaft body 1 and the second shaft body 3 both have rotational motion, and the first bearing 6 can provide support for the first shaft body 1 and the second shaft body 3 so that they can rotate smoothly. On the other hand, the surface of the sleeve bearing is coated with lubricating oil or lubricant, which can form a thin oil film. This oil film can significantly reduce the friction coefficient of the first shaft body 1 and the second shaft body 3, thereby reducing energy loss and frictional heat, and improving the overall service life of the transfer case. On the third hand, by reducing friction and wear, the sleeve bearing can reduce energy loss and improve the transmission efficiency of the transfer case.

[0074] The present disclosure does not specifically limit the number of the first bearings 6 , and the number can be matched and limited according to parameters such as the length of the second shaft body 3 sleeved on the first shaft body 1 , and the rotational speeds of the first shaft body and the second shaft body 3 .

[0075] In some embodiments, reference Figure 2 As shown, the transfer case further includes a second bearing 7 , which is sleeved on the first shaft body 1 or the second shaft body 3 , and is used to support and fix the first shaft body 1 or the second shaft body 3 .

[0076] The second bearing 7 is connected to the vehicle frame or other fixed parts, so that the second bearing 7 can fix and support the mounted components (i.e., the first shaft body 1 and / or the second shaft body 3), thereby preventing the mounted components from deforming, displacing, and other adverse phenomena due to high-speed rotation.

[0077] The present disclosure does not specifically limit the number of the second bearings 7 , and the number can be determined based on parameters such as the length of the first shaft body 1 and the length of the second shaft body 3 .

[0078] In some embodiments, reference Figure 2 As shown, the transmission assembly 4 has a bevel gear ring 41 and a bevel gear shaft 42 . The bevel gear ring 41 is connected to the second shaft body 3 , one end of the bevel gear shaft 42 is meshed with the bevel gear ring 41 , and the other end of the bevel gear shaft 42 is transmission-connected to the intermediate transmission shaft 100 .

[0079] The structure of the bevel gear ring 41 and the bevel gear shaft 42 can change the direction of power transmission. Since the engine is usually located in the engine compartment at the front end of the vehicle and the intermediate transmission shaft 100 is relatively long, the intermediate transmission shaft 100 is placed along the length direction of the vehicle, and the first shaft 1 and the second shaft 3 of the transfer case are placed along the width direction of the vehicle. Therefore, the structure of the bevel gear ring 41 and the bevel gear shaft 42 can realize the transmission of power from the first shaft 1 and the second shaft 3 to the intermediate transmission shaft 100.

[0080] In this way, it can be avoided that the first shaft body 1 and the second shaft body 3 must also be placed along the length direction of the vehicle, which in turn leads to a higher requirement on the length of the vehicle.

[0081] In some embodiments, the bevel gear ring 41 is welded to the second shaft body 3 .

[0082] On the one hand, welding melts the metal material through the conduction of heat energy and fuses it with other metal materials, thereby forming a larger contact area on the connection surface between the bevel gear ring 41 and the second shaft body 3. This connection method has better firmness and shock resistance, and can withstand heavy loads, vibrations or temperature changes without being easily loosened. On the other hand, the continuous metal conductor formed by the welding connection can effectively conduct heat, and can transfer the heat generated by the second shaft body 3 to the bevel gear ring 41, and can also transfer the heat generated by the bevel gear ring 41 to the second shaft body 3. On the third hand, the welding connection does not require the process of drilling holes in the plate and aligning holes during assembly, thereby simplifying the connection process between the bevel gear ring 41 and the second shaft body 3 and improving the production efficiency of the transfer case.

[0083] In some embodiments, the second shaft body 3 has a protrusion 32, and the protrusion 32 is connected to the bevel gear ring 41. The protrusion 32 can increase the connection area between the bevel gear ring 41 and the second shaft body 3, thereby increasing the connection strength between the bevel gear ring and the second shaft body and increasing the service life of the transfer case.

[0084] The present disclosure does not specifically limit the shape and size of the protrusion 32 , and can be matched and limited according to parameters such as the size and shape of the bevel gear ring 41 , for example: an annular protrusion, a columnar protrusion evenly distributed circumferentially.

[0085] In some embodiments, the transmission assembly 4 further has a third bearing 43 . The third bearing 43 is sleeved on the bevel gear shaft 42 . The third bearing 43 is used to support and fix the bevel gear shaft 42 .

[0086] The third bearing 43 is connected to the vehicle frame or other fixed components, so that the third bearing 43 can fix and support the bevel gear shaft 42, thereby preventing the bevel gear shaft 42 from deforming, displacing, and other undesirable phenomena due to high-speed rotation.

[0087] The present disclosure does not specifically limit the number of the third bearings 43 , and the number can be matched and limited according to parameters such as the size and rotation speed of the bevel gear shaft 42 .

[0088] In some embodiments, the third bearing 43 is a multi-row bearing. A multi-row bearing is a rolling bearing having more than two rows of rolling elements along the circumferential direction and capable of bearing loads in the same direction. A multi-row bearing has a large number of rolling elements and thus has a higher load-bearing capacity and rigidity.

[0089] Since the bevel gear shaft 42 is relatively long, the load on the third bearing 43 is relatively large, so using multiple-row bearings (eg, double-row bearings, four-row bearings) can provide a high supporting force for the bevel gear shaft 42 .

[0090] Based on the same concept, an embodiment of the present disclosure further provides a vehicle, which may include a transfer case as mentioned in any of the above embodiments.

[0091] The present disclosure does not specifically limit the type of vehicle, for example, a sedan, a bus, a truck, a sport utility vehicle (SUV), etc.

[0092] In the description of this specification, the description with reference to the terms "certain embodiments", "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 embodiments or examples are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0093] It is to be understood that in the present disclosure, "plurality" refers to two or more than two, and other quantifiers are similar. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. The singular forms "a", "the" and "the" are also intended to include plural forms, unless the context clearly indicates other meanings.

[0094] It is further understood that the terms "first", "second", etc. are used to describe various information, but such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other, and do not indicate a specific order or degree of importance. In fact, the expressions "first", "second", etc. can be used interchangeably. For example, without departing from the scope of the present disclosure, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information.

[0095] It can be further understood that the orientation or position relationship indicated by terms such as "center", "longitudinal", "lateral", "front", "rear", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation.

[0096] It is further understood that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral molding; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection without other components between the two, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this disclosure can be understood according to specific circumstances.

[0097] It is further understood that, although the operations are described in a specific order in the drawings in the embodiments of the present disclosure, it should not be understood as requiring the operations to be performed in the specific order shown or in a serial order, or requiring the execution of all the operations shown to obtain the desired results. In certain environments, multitasking and parallel processing may be advantageous.

[0098] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the scheme disclosed herein. The present disclosure is intended to cover any variation, use or adaptation of the present disclosure, which follows the general principles of the present disclosure and includes common knowledge or customary technical means in the art that are not disclosed in the present disclosure. The specification and examples are considered to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the scope of rights.

[0099] It should be understood that the present disclosure is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the scope of the appended claims.

Claims

1. A transfer case for a vehicle, characterized in that: The transfer case comprises a first shaft body (1), a first gear ring (2), a second shaft body (3), a transmission assembly (4) and a drive assembly (5); The first shaft (1) is used for transmission connection with the engine of the vehicle; The first gear ring (2) is sleeved on the first shaft body (1), and the first gear ring (2) is axially slidably connected to the first shaft body (1) and circumferentially transmission-connected to the first shaft body (1); The second shaft body (3) is sleeved on the first shaft body (1), one end of the second shaft body (3) has a toothed structure (31), and the toothed structure (31) is opposite to the first gear ring (2); The transmission assembly (4) is respectively connected to the second shaft (3) and the intermediate transmission shaft; The driving assembly (5) is located on a side of the first gear ring (2) away from the toothed structure (31), and the driving assembly (5) is used to: driving the first gear ring (2) to move in a direction close to the toothed structure (31) so that the first gear ring (2) meshes with the toothed structure (31); or, The first gear ring (2) is driven to move in a direction away from the toothed structure (31), so that the first gear ring (2) is separated from the toothed structure (31).

2. The transfer case according to claim 1, characterized in that: The driving component (5) comprises an electromagnetic coil (51) and a power source, the electromagnetic coil (51) being electrically connected to the power source, and the electromagnetic coil (51) being used to drive the movement of the first gear ring (2).

3. The transfer case according to claim 1, characterized in that: The transfer case further comprises a first bearing (6), wherein the first bearing (6) is located between the first shaft body (1) and the second shaft body (3), and is respectively connected to the first shaft body (1) and the second shaft body (3).

4. The transfer case according to claim 1, characterized in that: The transfer case further comprises a second bearing (7), wherein the second bearing (7) is sleeved on the first shaft body (1) or the second shaft body (3), and the second bearing (7) is used for supporting and fixing the first shaft body (1) or the second shaft body (3).

5. The transfer case according to claim 1, characterized in that: The transmission assembly (4) comprises a bevel gear ring (41) and a bevel gear shaft (42); the bevel gear ring (41) is connected to the second shaft body (3); one end of the bevel gear shaft (42) is meshed with the bevel gear ring (41); and the other end of the bevel gear shaft (42) is transmission-connected to the intermediate transmission shaft.

6. The transfer case according to claim 5, characterized in that: The bevel gear ring (41) is welded to the second shaft body (3).

7. The transfer case according to claim 6, characterized in that: The second shaft body (3) has a protruding portion (32), and the protruding portion (32) is connected to the bevel gear ring (41).

8. The transfer case according to any one of claims 5 to 7, characterized in that: The transmission assembly (4) further comprises a third bearing (43), wherein the third bearing (43) is sleeved on the bevel gear shaft (42), and the third bearing (43) is used for supporting and fixing the bevel gear shaft (42).

9. The transfer case according to claim 8, characterized in that: The third bearing (43) is a multi-row bearing.

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

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