Pneumatic transfer case

Abstract

The utility model discloses a pneumatic transfer case which comprises a shell, a side cover plate, a high-low gear shifting main body, an input main body, a middle transition main body, a 34-tooth driving wheel, a rear driving shaft, a front driving control main body, a front driving shaft, an odometer gear, a speed measuring induction gear ring and an induction measuring head. The odometer gear is arranged on the right side of the outer surface of the input body, the speed measuring induction gear ring is arranged on the middle side of the outer surface of the rear driving shaft, the induction measuring head is arranged above the speed measuring induction gear ring, power is allowed to be effectively transmitted between the input body and the high-low gear shifting body, and then the power is distributed to the front driving shaft and the rear driving shaft; the system can accurately measure the vehicle speed and the travelled distance through the design of the odometer gear and the speed measurement induction gear ring, data are fed back in real time through the induction measuring head, a driver can monitor the vehicle state, and the driving safety is improved. The overall performance can be improved through the high-low gear switching function, the power distribution function and the speed monitoring function.

Description

Technical Field

[0001] This utility model relates to the field of transfer case technology, specifically a pneumatic transfer case. Background Technology

[0002] The role of the transfer case assembly in the vehicle is to distribute power. It inputs power through the transfer case drive shaft, and then relies on the gear transmission system inside the transfer case to distribute the power reasonably to the front axle and the rear axle, enabling four-wheel drive.

[0003] Currently, Chinese patent application number CN201420166171.7 discloses a pneumatic transfer case, including a housing and an input gear shaft and its input gear, a front axle drive shaft and its front axle output gear, a front axle shift fork shaft, a rear axle drive shaft and its rear axle output gear, an intermediate gear shaft and its high and low speed gears, all rotatably mounted on the housing. A front axle sliding sleeve is provided on the front axle drive shaft via splines, and a sliding sleeve is provided on the intermediate gear shaft via splines that can slide left and right. The housing is provided with a front axle output pneumatic assembly for controlling the engagement and disengagement of the front axle drive shaft and the front axle shift fork shaft. The housing is also provided with a high and low speed pneumatic assembly for controlling the left and right sliding of the high and low speed sliding sleeves to achieve speed changes.

[0004] However, existing pneumatic transfer cases lack effective means of monitoring driving status, making it inconvenient for drivers to obtain speed and mileage information in real time. Furthermore, the system components for driving status monitoring are relatively scattered, leading to complex installation and integration, which affects the overall system reliability. Utility Model Content

[0005] The purpose of this utility model is to provide a pneumatic transfer case to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a pneumatic transfer case, comprising a housing, a side cover plate, a high / low shift main body, an input main body, an intermediate transition main body, a 34-tooth drive wheel, a rear drive shaft, a front drive control main body, a front drive shaft, an odometer gear, a speed sensor gear ring, and a sensor probe. The right side of the housing is tightly fitted with the side cover plate. The high / low shift main body, the input main body, and the intermediate transition main body are sequentially arranged from top to bottom on the upper side of the housing. The bottom side of the high / low shift main body is connected to both the input main body and the intermediate transition main body. A 34-tooth drive wheel is engaged on the right side of the bottom of the main body. A rear drive shaft is fixed to the middle right side of the 34-tooth drive wheel. The left side of the interior of the 34-tooth drive wheel is connected to the front drive control body, and the left side of the interior of the 34-tooth drive wheel is rotatably connected to the front drive shaft. Both the front drive shaft and the rear drive shaft are located on the lower side of the interior of the housing. The front drive control body is located on the bottom side of the interior of the housing. An odometer gear is located on the right side of the outer surface of the input body. A speed sensor gear is located on the middle side of the outer surface of the rear drive shaft. The sensor probe is located above the speed sensor gear.

[0007] Preferably, the high / low gear shifting body includes a high / low gear cylinder fastened to the upper right side of the side cover plate, a high / low gear shift fork shaft connected to the left output end of the high / low gear cylinder, a high / low gear shift fork bracket fastened to the middle side of the outer surface of the high / low gear shift fork shaft, and a first sliding tooth sleeve and a second sliding tooth sleeve disposed on the middle and lower sides of the front part of the high / low gear shift fork bracket. The high / low gear shift fork shaft is disposed on the top side inside the housing. The first sliding tooth sleeve is slidably engaged with the right side of the outer surface of the input body, and the second sliding tooth sleeve is slidably engaged with the middle side of the outer surface of the intermediate transition body.

[0008] Preferably, a high-speed gear sensor switch and a low-speed gear sensor switch are provided on the top left side of the high and low speed shift fork shaft, and both the high-speed gear sensor switch and the low-speed gear sensor switch are disposed through the top left side of the housing.

[0009] Preferably, the input body includes a 24-tooth output gear shaft that rotates through the side of the housing, a 34-tooth drive gear that is rotatably connected to the right end of the 24-tooth output gear shaft, and a shaft that is fixedly connected to the middle of the right side of the 34-tooth drive gear. The shaft rotates through the inside of the side cover plate, and the middle side of the outer surface of the shaft is connected to the odometer gear. The right side of the outer surface of the 24-tooth output gear shaft is engaged and slides with the first sliding sleeve.

[0010] Preferably, the intermediate transition body includes an intermediate shaft rotatably disposed inside the middle side of the housing, a 31-tooth intermediate gear rotatably connected to the left side of the outer surface of the intermediate shaft, and a 21-tooth intermediate gear fixedly connected to the right side of the outer surface of the intermediate shaft. The middle side of the outer surface of the intermediate shaft meshes with the second sliding sleeve. The top side of the 31-tooth intermediate gear meshes with the 24-tooth output gear shaft. The top side of the 21-tooth intermediate gear meshes with the 34-tooth drive gear, and the bottom side of the 21-tooth intermediate gear meshes with the 34-tooth drive gear.

[0011] Preferably, the front drive control body includes a front drive cylinder fastened to the bottom right side of the side cover plate, a front drive shift fork shaft connected to the left output end of the front drive cylinder, a front drive shift fork bracket fastened to the middle side of the outer surface of the front drive shift fork shaft, and a front drive release sleeve disposed on the top side of the front drive shift fork bracket, wherein the front drive release sleeve engages and slides on the right side of the outer surface of the front drive shaft.

[0012] Preferably, a front drive engagement sensor switch and a front drive disengagement sensor switch are provided on the bottom left side of the front drive shift fork shaft, and both the front drive engagement sensor switch and the front drive disengagement sensor switch are disposed through the bottom left side of the housing.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention features an odometer gear on the right side of the outer surface of the input body and a speed-sensing gear ring on the middle side of the outer surface of the rear drive shaft. A sensor head is positioned above the speed-sensing gear ring, allowing for effective power transmission between the input body and the high / low gear shifting body. This distributes power to the front and rear drive shafts, enabling four-wheel drive or two-wheel drive functionality. The design of the odometer gear and speed-sensing gear ring allows the system to accurately measure vehicle speed and mileage. Real-time data feedback from the sensor head helps the driver monitor vehicle status. The system improves overall performance through high / low gear shifting, power distribution, and speed monitoring functions. Furthermore, integrating shifting, power transmission, and speed measurement functions into a single housing simplifies installation and enhances the overall system reliability. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure connecting the input body and the intermediate transition body of this utility model.

[0017] In the diagram: 1. Housing - 1; 2. Side cover - 2; 3. High / low shift main body - 3; 4. Input main body - 4; 5. Intermediate transition main body - 5; 6. 34-tooth drive wheel - 6; 7. Rear drive shaft - 7; 8. Front drive control main body - 8; 9. Front drive shaft - 9; 10. Odometer gear - 10; 11. Speed ​​sensor gear ring - 12; 12. Sensor probe - 12; 31. High / low gear cylinder - 31; 32. High / low gear shift fork shaft - 32; 33. High / low gear shift fork holder - 33; 34. First sliding gear sleeve - 34; 35. Second sliding gear sleeve - 35; High speed gear sensor switch - 36; Low speed gear sensor switch - 37; 41. 24-tooth output gear shaft - 41; 42. 34-tooth drive gear - 42; Shaft - 43; 51. Intermediate shaft - 51; 52. 21-tooth intermediate gear - 53; 81. Front drive cylinder - 81; 82. Front drive shift fork shaft - 82; 83. Front drive shift fork holder - 83; 84. Front drive engagement sensor switch - 85; Front drive disengagement sensor switch - 86. Detailed Implementation

[0018] To further explain the technical solution of this utility model, a detailed description is provided below through specific embodiments.

[0019] Please see Figure 1 This utility model provides a pneumatic transfer case, including a housing 1, a side cover plate 2, a high / low shift body 3, an input body 4, an intermediate transition body 5, a 34-tooth drive wheel 6, a rear drive shaft 7, a front drive control body 8, a front drive shaft 9, an odometer gear 10, a speed sensor gear ring 11, and a sensor probe 12. The side cover plate 2 is fixedly attached to the right side of the housing 1. The high / low shift body 3, the input body 4, and the intermediate transition body 5 are arranged sequentially from top to bottom on the upper middle side of the housing 1. The bottom side of the high / low shift body 3 is connected to the input body 4 and the intermediate transition body 5, respectively. The 34-tooth drive wheel 6 is engaged with the right side of the bottom of the intermediate transition body 5. The rear drive shaft 7 is fixed to the middle right side of the 34-tooth drive wheel 6. The left side of the interior of the 34-tooth drive wheel 6 is connected to the front drive control body 8, and the left side of the interior of the 34-tooth drive wheel 6 rotates with the front drive shaft 9. The connection is made so that the front drive shaft 9 and the rear drive shaft 7 are both located inside the lower middle side of the housing 1, the front drive control body 8 is located inside the bottom side of the housing 1, the right side of the outer surface of the input body 4 is provided with an odometer gear 10, the middle side of the outer surface of the rear drive shaft 7 is provided with a speed sensing gear ring 11, and a sensing probe 12 is provided above the speed sensing gear ring 11. This allows for the effective transmission of power between the input body 4 and the high / low shift body 3, thereby distributing power to the front drive shaft 9 and the rear drive shaft 7 to achieve four-wheel drive or two-wheel drive functions. The design of the odometer gear 10 and the speed sensing gear ring 11 enables the system to accurately measure vehicle speed and mileage. The real-time feedback of data through the sensing probe 12 helps the driver monitor the vehicle status. The overall performance is improved through high / low gear switching, power distribution, and speed monitoring functions.

[0020] Please see Figure 1 and Figure 2 This utility model provides a pneumatic transfer case. The high / low shift body 3 includes a high / low shift cylinder 31 fastened to the upper right side of the side cover plate 2, a high / low shift fork shaft 32 connected to the left output end of the high / low shift cylinder 31, a high / low shift fork bracket 33 fastened to the middle side of the outer surface of the high / low shift fork shaft 32, and a first sliding tooth sleeve 34 and a second sliding tooth sleeve 35 disposed on the middle and lower sides of the front part of the high / low shift fork bracket 33. Under the action of the high / low shift cylinder 31, the high / low shift fork bracket 33 can drive the first sliding tooth sleeve 34 and the second sliding tooth sleeve 35. The moving toothed sleeve 35 moves to the left or right. The high and low gear shift fork shaft 32 is located on the top side inside the housing 1. The first sliding toothed sleeve 34 is slidably engaged with the right side of the outer surface of the input body 4. The second sliding toothed sleeve 35 is slidably engaged with the middle side of the outer surface of the intermediate transition body 5. A high speed shift fork shaft 32 is provided on the top left side of the high speed shift fork shaft 32. Both the high speed shift fork 36 and the low speed shift fork 37 are located through the top left side of the housing 1 to monitor the high or low gear status.

[0021] The input body 4 includes a 24-tooth output gear shaft 41 that rotatably passes through the side of the housing 1, a 34-tooth drive gear 42 rotatably connected to the right end of the 24-tooth output gear shaft 41, and a shaft 43 fixedly connected to the middle right side of the 34-tooth drive gear 42. The shaft 43 rotatably passes through the inside of the side cover plate 2. The middle side of the outer surface of the shaft 43 is connected to the odometer gear 10 to measure the vehicle's mileage. The right side of the outer surface of the 24-tooth output gear shaft 41 is engaged and slides with the first sliding sleeve 34. When the first sliding sleeve 34 moves to the right side, it engages with the 34-tooth drive gear 42 for transmission. The intermediate transition body 5 includes an intermediate shaft 51 rotatably disposed in the middle of the inside of the housing 1, a 31-tooth intermediate gear 52 rotatably connected to the left side of the outer surface of the intermediate shaft 51, and a fixed shaft 43. A 21-tooth intermediate gear 53 is connected to the right side of the outer surface of the intermediate shaft 51. The middle side of the outer surface of the intermediate shaft 51 is engaged and slides with the second sliding sleeve 35. When the second sliding sleeve 35 moves to the left, it engages and drives the 31-tooth intermediate gear 52. The rotation of the 31-tooth intermediate gear 52 causes the second sliding sleeve 35 to drive the intermediate shaft 51 and the 21-tooth intermediate gear 53 to move. The top side of the 31-tooth intermediate gear 52 is engaged with the 24-tooth output gear shaft 41. When the 24-tooth output gear shaft 41 rotates, it drives the 31-tooth intermediate gear 52 to move. The top side of the 21-tooth intermediate gear 53 is engaged with the 34-tooth drive gear 42, and the bottom side of the 21-tooth intermediate gear 53 is engaged with the 34-tooth drive wheel 6. The 21-tooth intermediate gear 53 drives the 34-tooth drive wheel 6 to rotate.

[0022] The front drive control unit 8 includes a front drive cylinder 81 fastened to the bottom right side of the side cover plate 2, a front drive shift fork shaft 82 connected to the left output end of the front drive cylinder 81, a front drive shift fork bracket 83 fastened to the middle side of the outer surface of the front drive shift fork shaft 82, and a front drive release sleeve 84 disposed on the top side of the front drive shift fork bracket 83. Under the action of the front drive cylinder 81, the front drive shift fork bracket 83 drives the front drive release sleeve 84 to perform a lateral displacement action, and the front drive release sleeve 84 engages and slides on the front drive shaft 9. On the right side of the outer surface, after the front drive release sleeve 84 moves to the right, it engages with the 34-tooth drive wheel 6 to achieve four-wheel drive function. After the front drive release sleeve 84 moves to the left, it disengages from the 34-tooth drive wheel 6 to achieve two-wheel drive function. A front drive engagement induction switch 85 and a front drive disengagement induction switch 86 are provided on the bottom left side of the front drive shift fork shaft 82. Both the front drive engagement induction switch 85 and the front drive disengagement induction switch 86 are provided through the bottom left side of the housing 1 to monitor the four-wheel drive or two-wheel drive status.

[0023] The working principle of this pneumatic transfer case is as follows:

[0024] First, during the two-wheel drive function, the front drive cylinder 81 is activated. Under the action of the front drive cylinder 81, the front drive shift fork 83 drives the front drive release sleeve 84 to move to the left and separate from the 34-tooth drive wheel 6. At this time, the front drive separation sensor switch 86 detects the signal, and then power is input to the 24-tooth output gear shaft 41. The 24-tooth output gear shaft 41 rotates to make the 31-tooth intermediate gear 52 rotate on the surface of the intermediate shaft 51. When low-speed drive is required, the high-low gear cylinder 31 drives the high-low gear shift fork 33 to move the first sliding sleeve 34 and the second sliding sleeve 35 to the left. At this time, the low-speed sensor switch 37 detects the signal, and the first sliding sleeve 34 disengages from the 34-tooth drive gear 42. The second sliding sleeve 35 contacts and meshes with the 31-tooth intermediate gear 52. The 24-tooth output gear shaft 41 drives the 21-tooth intermediate gear 53 through the 31-tooth intermediate gear 52. Under the cooperation of the 21-tooth intermediate gear 53 and the 34-tooth drive wheel 6, the rear drive shaft 7 rotates to achieve low-speed drive. When high-speed drive is required, the first sliding sleeve 34 contacts the 34-tooth drive gear 42 and the second sliding sleeve 35 disengages from the 31-tooth intermediate gear 52. The 24-tooth output gear shaft 41 drives the 21-tooth intermediate gear 53 and the intermediate shaft 51 through the 34-tooth drive gear 42. Under the cooperation of the 21-tooth intermediate gear 53 and the 34-tooth drive wheel 6, the rear drive shaft 7 rotates to achieve high-speed drive.

[0025] Secondly, during the four-wheel drive function, the front drive cylinder 81 is activated. Under the action of the front drive cylinder 81, the front drive shift fork 83 drives the front drive release sleeve 84 to move to the right and engage with the 34-tooth drive wheel 6. At this time, the front drive engagement induction switch 85 detects the signal, and then power is input to the 24-tooth output gear shaft 41. The 24-tooth output gear shaft 41 rotates to make the 31-tooth intermediate gear 52 rotate on the surface of the intermediate shaft 51. When low-speed drive is required, the high-low gear cylinder 31 drives the high-low gear shift fork 33 to move the first sliding sleeve 34 and the second sliding sleeve 35 to the right. At this time, the low-speed induction switch 37 detects the signal, the first sliding sleeve 34 disengages from the 34-tooth drive gear 42, and the second sliding sleeve... The sleeve 35 meshes with the 31-tooth intermediate gear 52. The 24-tooth output gear shaft 41 drives the intermediate shaft 51 to move the 21-tooth intermediate gear 53 through the 31-tooth intermediate gear 52. Under the cooperation of the 21-tooth intermediate gear 53 and the 34-tooth drive wheel 6, the rear drive shaft 7 and the front drive shaft 9 rotate to achieve low-speed four-wheel drive. When high-speed drive is required, the first sliding sleeve 34 contacts the 34-tooth drive gear 42 and the second sliding sleeve 35 disengages from the 31-tooth intermediate gear 52. The 24-tooth output gear shaft 41 drives the 21-tooth intermediate gear 53 and the intermediate shaft 51 through the 34-tooth drive gear 42. Under the cooperation of the 21-tooth intermediate gear 53 and the 34-tooth drive wheel 6, the rear drive shaft 7 and the front drive shaft 9 rotate to achieve high-speed four-wheel drive.

[0026] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pneumatic transfer case, comprising a housing (1), wherein a side cover plate (2) is fixedly attached to the right side of the housing (1), characterized in that: Inside the housing (1), from top to bottom, are arranged a high / low shift body (3), an input body (4), and an intermediate transition body (5). The bottom of the high / low shift body (3) is connected to the input body (4) and the intermediate transition body (5) respectively. A 34-tooth drive wheel (6) is engaged on the right side of the bottom of the intermediate transition body (5). A rear drive shaft (7) is fixed in the middle of the right side of the 34-tooth drive wheel (6). The left side of the interior of the 34-tooth drive wheel (6) is connected to the front drive control body (8). Furthermore, the left side of the 34-tooth drive wheel (6) is rotatably connected to the front drive shaft (9). The front drive shaft (9) and the rear drive shaft (7) are both located on the lower side of the housing (1). The front drive control body (8) is located on the bottom side of the housing (1). The odometer gear (10) is located on the right side of the outer surface of the input body (4). The speed sensor gear ring (11) is located on the middle side of the outer surface of the rear drive shaft (7). The sensor probe (12) is located above the speed sensor gear ring (11).

2. The pneumatic transfer case according to claim 1, characterized in that: The high and low gear shifting body (3) includes a high and low gear cylinder (31) fastened to the upper right side of the side cover plate (2), a high and low gear shift fork shaft (32) connected to the left output end of the high and low gear cylinder (31), a high and low gear shift fork bracket (33) fastened to the middle side of the outer surface of the high and low gear shift fork shaft (32), and a first sliding tooth sleeve (34) and a second sliding tooth sleeve (35) disposed on the middle and lower sides of the front part of the high and low gear shift fork bracket (33). The high and low gear shift fork shaft (32) is disposed on the top side inside the housing (1). The first sliding tooth sleeve (34) is slidably engaged with the right side of the outer surface of the input body (4), and the second sliding tooth sleeve (35) is slidably engaged with the middle side of the outer surface of the intermediate transition body (5).

3. The pneumatic transfer case according to claim 2, characterized in that: The high and low gear shift fork shaft (32) is provided with a high speed gear sensor switch (36) and a low speed gear sensor switch (37) on the top left side, and both the high speed gear sensor switch (36) and the low speed gear sensor switch (37) are provided through the top left side of the housing (1).

4. The pneumatic transfer case according to claim 2, characterized in that: The input body (4) includes a 24-tooth output gear shaft (41) that rotates through the side of the housing (1), a 34-tooth drive gear (42) that is rotatably connected to the right end of the 24-tooth output gear shaft (41), and a shaft (43) that is fixedly connected to the middle of the right side of the 34-tooth drive gear (42). The shaft (43) rotates through the inside of the side cover plate (2). The middle side of the outer surface of the shaft (43) is connected to the odometer gear (10). The right side of the outer surface of the 24-tooth output gear shaft (41) is engaged and slides with the first sliding sleeve (34).

5. A pneumatic transfer case according to claim 4, characterized in that: The intermediate transition body (5) includes an intermediate shaft (51) rotatably disposed inside the middle side of the housing (1), a 31-tooth intermediate gear (52) rotatably connected to the left side of the outer surface of the intermediate shaft (51), and a 21-tooth intermediate gear (53) fixedly connected to the right side of the outer surface of the intermediate shaft (51). The middle side of the outer surface of the intermediate shaft (51) meshes with the second sliding sleeve (35). The top side of the 31-tooth intermediate gear (52) meshes with the 24-tooth output gear shaft (41). The top side of the 21-tooth intermediate gear (53) meshes with the 34-tooth drive gear (42), and the bottom side of the 21-tooth intermediate gear (53) meshes with the 34-tooth drive wheel (6).

6. The pneumatic transfer case according to claim 1, characterized in that: The front drive control body (8) includes a front drive cylinder (81) fastened to the bottom right side of the side cover plate (2), a front drive shift fork shaft (82) connected to the left output end of the front drive cylinder (81), a front drive shift fork bracket (83) fastened to the middle side of the outer surface of the front drive shift fork shaft (82), and a front drive release sleeve (84) disposed on the top side of the front drive shift fork bracket (83). The front drive release sleeve (84) engages and slides on the right side of the outer surface of the front drive shaft (9).

7. A pneumatic transfer case according to claim 6, characterized in that: The front drive shift fork shaft (82) is provided with a front drive engagement sensor switch (85) and a front drive disengagement sensor switch (86) on the bottom left side, and both the front drive engagement sensor switch (85) and the front drive disengagement sensor switch (86) are provided through the bottom left side of the housing (1).

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