High-efficiency automobile transfer case

Abstract

The utility model discloses a high-efficiency automobile transfer case, which relates to the technical field of automobile spare parts and comprises a transfer case shell, a planetary gear is arranged in the transfer case shell, a transmission structure is arranged on the side surface of the planetary gear, a bevel gear and a transmission ring are arranged, and the bevel gear is connected with a plurality of transmission bevel teeth in the transmission ring in a clamping manner. Due to the fact that the contact face between the bevel gear and the transmission bevel gear is an inclined face, the bevel gear and the transmission ring can be clamped at any angle, and the situation that a driving rod cannot drive the gear to stretch into the transmission ring to be clamped under the condition of straight tooth transmission is avoided; according to the automobile transfer case, the buffering ring is arranged, the fixing blocks are arranged on the two sides of the interior of the buffering ring, the buffering springs are arranged on the upper face and the lower face of each fixing block, and when the automobile transfer case backs up, the driving rod rotating in the reverse direction can still make contact with the buffering springs, so that large torque can be buffered in the backing-up process.

Description

Technical Field

[0001] The utility model relates to the technical field of automotive parts, and particularly relates to a high-efficiency automotive transfer case. Background Technique

[0002] The so-called transfer case is a device that distributes the power of the engine and can output the power to the rear axle or simultaneously output it to the front / rear axles. From this perspective, it can be seen that the transfer case is actually a component on four-wheel drive vehicles. With the development of four-wheel drive technology, the transfer case has also been constantly changing and has gradually formed transfer cases with very different styles, which are matched with four-wheel drive vehicles with different requirements.

[0003] In the prior art, for example, the automotive transfer case assembly with the publication number

[0004] CN216009491U includes a transfer case housing. A planetary gear is arranged inside the transfer case housing. First driven gears, second driven gears, a front axle drive gear, and a rear axle drive gear are arranged at the arc-shaped corners around the transfer case housing. A power input structure is arranged on the side of the planetary gear away from the transfer case housing. A first transmission belt is sleeved between the first driven gear and the front axle drive gear, and a second transmission belt is sleeved between the second driven gear and the rear axle drive gear.

[0005] The driven gear and the driving gear sleeve of this automotive transfer case are snap-connected through an external driving device. However, due to the arrangement of spur gears, when not rotated to the meshing angle, the driven gear and the driving gear sleeve cannot be engaged and transmitted, and the surface of the parts will be damaged by friction. At the same time, this transfer case can reduce the torque of the vehicle. However, during the reverse process, the vehicle will also generate a large torque, and the transfer case cannot buffer the torque during the reverse process. Summary of the Invention

[0006] The purpose of the utility model is to solve the problems in the above background technique that the driven gear and the driving gear can only be engaged at specific positions and the reduction of torque cannot be applied during reverse, and to propose a high-efficiency automotive transfer case.

[0007] The purpose of the utility model can be realized by the following technical solutions:

[0008] A high-efficiency automotive transfer case includes a transfer case housing. A planetary gear is arranged inside the transfer case housing. A transmission structure is arranged on the side of the planetary gear. The transmission structure includes:

[0009] A transmission rod, which is coaxially and fixedly connected to the steering shaft of the planetary gear. Connecting plates are arranged on both sides of the surface of the transmission rod;

[0010] A buffer ring is sleeved on one end of the transmission rod close to the connecting plate. Fixed blocks are arranged on both sides of the inner wall of the buffer ring, and buffer springs are fixedly connected to the upper and lower surfaces of the fixed blocks;

[0011] A transmission ring is fixedly connected to the surface of the buffer ring away from the transmission rod, and several transmission bevel gears are arranged inside the transmission ring;

[0012] A bevel gear is arranged on the surface of the transmission ring away from the buffer ring. The bevel gear is meshed and connected with the transmission bevel gears, and the steering shaft of the bevel gear is connected with a driving rod.

[0013] As a further scheme of the utility model: the contact surface between the bevel gear and the transmission bevel gears is an inclined surface.

[0014] As a further scheme of the utility model: a front-wheel drive transmission gear and a rear-wheel drive transmission gear are rotatably arranged in the transfer case housing, and the front-wheel drive transmission gear and the rear-wheel drive transmission gear are meshed and connected with a planetary gear.

[0015] As a further scheme of the utility model: a driving structure is rotatably arranged in the transfer case housing, and the driving gear of the driving structure is rotatably arranged in the transfer case housing; the rotating shaft of the driving gear is coaxially connected with a transmission shaft, and a setting plate and several friction plates are arranged on the surface of the transmission shaft; a limiting ring is arranged at one end of the transmission shaft, and the transmission shaft is connected with a driving shaft hydraulic rod through the limiting ring.

[0016] As a further scheme of the utility model: the front-wheel drive transmission gear and the rear-wheel drive transmission gear are respectively in transmission connection with two driving gears, and transmission chains are sleeved between the front-wheel drive transmission gear, the rear-wheel drive transmission gear and the surfaces of the driving gears.

[0017] As a further scheme of the utility model: a return spring is arranged between several friction plates, and a return spring is arranged between the friction plates and the setting plate.

[0018] The beneficial effects of the utility model:

[0019] (1) For a high-efficiency transfer case of the utility model, by arranging a bevel gear and a transmission ring, the bevel gear is engaged and connected with several transmission bevel gears inside the transmission ring. Since the contact surface between the bevel gear and the transmission bevel gears is an inclined surface, the bevel gear and the transmission ring can be engaged at any angle, avoiding the situation that the driving rod cannot drive the gear to extend into the transmission ring for engagement in the case of straight-tooth transmission;

[0020] (2) A high-efficiency transfer case for an automobile of the present utility model is provided with a buffer ring. Fixed blocks are arranged on both sides inside the buffer ring, and buffer springs are arranged on the upper and lower surfaces of each fixed block. When the automobile transfer case is in reverse, the driving rod rotating in the reverse direction can still contact the buffer springs, so that large torque can be buffered during reverse driving, avoiding the situation that the power input shaft is easily broken, and improving the service life of the transfer case. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present utility model will be further described below with reference to the accompanying drawings.

[0022] Figure 1 is a schematic structural diagram of a high-efficiency transfer case for an automobile of the present utility model;

[0023] Figure 2 is a schematic structural diagram of the transmission structure of the present utility model;

[0024] Figure 3 is a schematic structural diagram of the buffer ring of the present utility model;

[0025] Figure 4 is a schematic structural diagram of the driving structure of the present utility model.

[0026] In the figure: 1. Transfer case housing; 2. Planetary gear; 3. Transmission structure; 31. Transmission rod; 32. Buffer ring; 33. Transmission ring; 34. Transmission bevel gear; 35. Bevel gear; 36. Driving rod; 37. Fixed block; 38. Buffer spring; 39. Connecting plate; 4. Front-wheel drive transmission gear; 5. Rear-wheel drive transmission gear; 6. Transmission chain; 7. Driving structure; 71. Driving gear; 72. Transmission shaft; 73. Setting plate; 74. Return spring; 75. Friction plate; 76. Limit ring; 77. Driving shaft hydraulic rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0028] Please refer to Figures 1-4As shown in the figure, the utility model relates to a high-efficiency automotive transfer case, which includes a transfer case housing 1. A planetary gear 2 is arranged at the center inside the transfer case housing 1. A transmission structure 3 is arranged on one side of the planetary gear 2. A transmission rod 31 of the transmission structure 3 is coaxially and fixedly connected to the steering shaft of the planetary gear 2. A buffer ring 32 is arranged on the side of the rotating rod away from the planetary gear 2. A transmission ring 33 is fixedly connected to one side of the buffer ring 32. A number of transmission bevel gears 34 are arranged inside the transmission ring 33. Fixed blocks 37 are fixedly connected to both sides of the inner wall of the buffer ring 32. Buffer springs 38 are fixedly connected to the upper and lower surfaces of each fixed block 37. The buffer springs 38 are arranged in a bent manner along the inner arm of the buffer ring 32. The transmission rod 31 extends into the center position of the buffer ring 32. Connecting plates 39 are fixedly connected to both sides of the transmission rod 31. The connecting plates 39 are located between the buffer springs 38 on both sides. A bevel gear 35 is arranged on the side of the transmission ring 33 away from the buffer ring 32. The bevel teeth on the surface of the bevel gear 35 can be meshed and transmitted with the transmission bevel gears 34 inside the transmission ring 33. A driving rod 36 is arranged on the side of the bevel gear 35 away from the transmission ring 33. The driving rod 36 is coaxially and fixedly connected to the steering shaft of the bevel gear 35. The driving rod 36 is connected to an external driving device.

[0029] A front-wheel drive transmission gear 4 and a rear-wheel drive transmission gear 5 are rotatably arranged inside the transfer case housing 1. The front-wheel drive transmission gear 4 and the rear-wheel drive transmission gear 5 are respectively located above and below the planetary gear 2. The front-wheel drive transmission gear 4 and the rear-wheel drive transmission gear 5 are both meshed and connected to the tooth surface of the planetary gear 2. Two driving structures 7 are rotatably arranged inside the transfer case housing 1. The driving structures 7 are respectively connected to the front wheels and rear wheels of the vehicle. A transmission chain 6 is sleeved on the surface of the front-wheel drive transmission gear 4 and the driving structure 7 that controls the front wheels. A transmission chain 6 is sleeved on the surface of the rear-wheel drive transmission gear 5 and the driving structure 7 that controls the rear wheels. The driving structure 7 includes a driving gear 71. The driving gear 71 is engaged and connected inside the transmission chain 6. The steering shaft of the driving gear 71 is coaxially and fixedly connected to a rotating shaft. A setting plate 73 is fixedly connected to the surface of the rotating shaft. One end of the rotating shaft penetrates through the setting plate 73. A number of friction plates 75 are sleeved on the surface of the rotating shaft. A return spring 74 is arranged between the friction plates 75. A return spring 74 is arranged between the friction plate 75 and the setting plate 73. A limit ring 76 is arranged at one end of the rotating shaft away from the driving gear 71. The limit ring 76 is connected to a corresponding driving shaft hydraulic rod 77.

[0030] When using this high-efficiency automotive transfer case, the planetary gear 2 is driven to rotate by starting the transmission structure 3. The external drive structure 7 drives the telescopic movement of the active rod 36, causing the active rod 36 to drive the connected bevel gear 35 to extend into the transmission ring 33, and making the bevel gear 35 mesh with the transmission bevel gear 34 inside the transmission ring 33. Since the contact surface between the bevel gear 35 and the transmission bevel gear 34 is an inclined surface, the engagement process of the bevel gear 35 extending into the transmission ring 33 can be smoother, enabling the bevel gear 35 to directly enter the transmission ring 33 for engagement regardless of the rotation angle. Subsequently, the active rod 36 indirectly drives the transmission ring 33 and the buffer ring 32 to rotate, and the buffer spring 38 inside the buffer ring 32 contacts during the rotation process. The buffer spring 38 is compressed until it contracts to the maximum elastic force, and the buffer ring 32 drives the transmission rod 31 to rotate through the connecting plate 39, thereby driving the planetary gear 2 to rotate. The setting of the buffer ring 32 can buffer when the torque is too large, and still be able to contact the buffer spring 38 on the other side for buffering in the case of reversing. The hydraulic rod 77 of the drive shaft of the front or rear wheels is started, causing the hydraulic rod 77 of the drive shaft to drive the friction plate 75 to press the setting plate 73, so that the drive gear 71 drives the corresponding front or rear wheels for transmission, adjusting the two-wheel drive or four-wheel drive situation during the driving of the vehicle, simplifying the replacement of the drive situation during the driving of the vehicle, and reducing energy loss.

[0031] The working principle of the present invention: A high-efficiency automotive transfer case of the present invention is provided with a bevel gear 35 and a transmission ring 33. The bevel gear 35 is engaged with a number of transmission bevel gears 34 inside the transmission ring 33. Since the contact surface between the bevel gear 35 and the transmission bevel gear 34 is an inclined surface, the bevel gear 35 and the transmission ring 33 can be engaged at any angle, avoiding the situation where the active rod 36 cannot drive the gear to extend into the transmission ring 33 for engagement in the case of straight-tooth transmission; by providing a buffer ring 32, fixed blocks 37 are provided on both sides inside the buffer ring 32, and buffer springs 38 are provided on the upper and lower surfaces of each fixed block 37, so that when the automotive transfer case is reversing, the reversely rotating active rod 36 can still contact the buffer spring 38, enabling buffering of large torque during reversing and avoiding the situation where the power input shaft is easily broken, thus improving the service life of the transfer case.

[0032] The above has described a specific embodiment of the present invention in detail, but the content described is only the preferred embodiment of the present invention and cannot be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the application of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. A high-efficiency automobile transfer case, characterized in that: The invention comprises a transfer case housing (1), wherein a planetary gear (2) is arranged inside the transfer case housing (1), and a transmission structure (3) is arranged on the side of the planetary gear (2), wherein the transmission structure (3) comprises: A transmission rod (31) is coaxially fixedly connected to the steering shaft of the planetary gear (2), and connecting plates (39) are provided on both sides of the surface of the transmission rod (31); A buffer ring (32) is sleeved on one end of the transmission rod (31) close to the connecting plate (39), and fixing blocks (37) are arranged on both sides of the inner wall of the buffer ring (32), and buffer springs (38) are fixedly connected to the upper and lower surfaces of the fixing block (37); A transmission ring (33) is fixedly connected to a side of the buffer ring (32) away from the transmission rod (31), and a plurality of transmission bevel teeth (34) are arranged inside the transmission ring (33); The bevel gear (35) is arranged on a side of the transmission ring (33) away from the buffer ring (32). The bevel gear (35) is meshedly connected with the transmission bevel gear (34). The steering shaft of the bevel gear (35) is connected with an active rod (36).

2. A high-efficiency automobile transfer case according to claim 1, characterized in that: The contact surface between the bevel gear (35) and the transmission bevel gear (34) is an inclined surface.

3. The high-efficiency automobile transfer case according to claim 1 is characterized in that: A front drive gear (4) and a rear drive gear (5) are rotatably arranged in a transfer case housing (1); the front drive gear (4) and the rear drive gear (5) are meshedly connected with the planetary gear (2).

4. A high-efficiency automobile transfer case according to claim 3, characterized in that: A drive structure (7) is rotatably arranged in a transfer case housing (1); a drive gear (71) of the drive structure (7) is rotatably arranged in the transfer case housing (1); a rotation shaft of the drive gear (71) is coaxially connected to a transmission shaft (72); a setting plate (73) and a plurality of friction plates (75) are arranged on the surface of the transmission shaft (72); a limit ring (76) is arranged at one end of the transmission shaft (72), and the transmission shaft (72) is connected to a drive shaft hydraulic rod (77) via the limit ring (76).

5. The high-efficiency automobile transfer case according to claim 4 is characterized in that: The front drive transmission gear (4) and the rear drive transmission gear (5) are respectively connected to the two driving gears (71) in driving connection, and a transmission chain (6) is sleeved between the front drive transmission gear (4) and the rear drive transmission gear (5) and the surface of the driving gear (71).

6. A high-efficiency automobile transfer case according to claim 5, characterized in that: A return spring (74) is arranged between the plurality of friction plates (75), and a return spring (74) is arranged between the friction plate (75) and the setting plate (73).

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