A microcar transfer case

Abstract

The utility model discloses a kind of microcar transfer cases, belong to the related technical field of automobile transmission structure, including outer shell, output shaft and input shaft, the number of output shaft is two, the outer shell and output shaft and the outer shell and input shaft are movably connected, the output shaft and input shaft are connected by second gear and first gear transmission, the outer surface of the outer shell movably installs several groups of moving clamps, the one end of the moving clamp and the outer surface of the outer shell are fixed by fixed portion butt joint, the lower end outer surface of the outer shell is fixedly installed with heat dissipation bottom plate, the bottom of the outer shell is equipped with several groups of heat dissipation fins;It can be adaptively adjusted according to box body connecting point, output shaft length or sprocket center distance and other key interface positions, realize the accurate matching of the physical connection between transfer case and frame, gearbox and transmission shaft, flexibly adapt to different wheelbase, engine layout or drive form Microcar model, improve the versatility of transfer case.

Description

Technical Field

[0001] This utility model belongs to the technical field of automotive transmission structure, specifically a micro automotive transfer case. Background Technology

[0002] The transfer case is the power distribution structure in a four-wheel drive vehicle. It receives power from the transmission and distributes it to the front and rear drive axles. Its core functions are twofold: first, it transmits power to both axles simultaneously via a chain or gear set, achieving four-wheel drive; second, it significantly amplifies engine torque through additional low-speed gears, thus providing the vehicle with powerful climbing and off-road capabilities. Depending on the control method, transfer cases are mainly divided into part-time four-wheel drive (requiring manual switching and featuring a robust structure), on-demand four-wheel drive (automatically controlled by a computer and emphasizing convenience), and full-time four-wheel drive (maintaining four-wheel drive at all times and offering balanced performance).

[0003] Patent document CN100520110C describes a micro-car transfer case. Within the housing formed by the docking of the front and rear covers of the transfer case, there are a drive gear, a large gear, and a small gear. The large gear is located between the drive gear and the small gear and meshes with both. A synchronizer engagement tooth is fitted onto an annular boss at the front of the small gear. A synchronizer ring is loosely fitted onto a hollow cone at the front end of the synchronizer engagement tooth, and a synchronizer fixing tooth is installed on the transfer case output shaft on the front side of the synchronizer ring. A synchronizer engagement tooth sleeve is fitted onto the synchronizer fixing tooth. An annular groove is formed on the outer surface of the synchronizer engagement tooth sleeve, and a roller of a shift fork mechanism is engaged in this annular groove.

[0004] The existing transfer cases for microcars have certain shortcomings in use. The aforementioned transfer cases do not have a fixed adjustment structure, which means that they can only be installed on a fixed model of microcar, reducing their applicability. Secondly, the aforementioned transfer cases do not have an auxiliary cooling structure. The internal cooling of the gear set is achieved by oil, which causes the gear set temperature to rise after long-term use, reducing the stability of the transfer cases during use. Utility Model Content

[0005] This utility model provides a transfer case for miniature cars, which solves the problem that existing miniature car transfer cases lack a fixed adjustment structure, limiting their applicability to specific models of miniature cars. A microcar transfer case includes a housing, an output shaft, and an input shaft. There are two output shafts. The housing and the output shafts, as well as the housing and the input shafts, are movably connected. The output shaft and the input shaft are connected by a second gear and a first gear. Several sets of movable clips are movably mounted on the outer surface of the housing. One end of each movable clip is fixed to the housing by a fixing part. A heat dissipation base plate is fixedly mounted on the lower outer surface of the housing. Several sets of heat dissipation fins are provided on the bottom of the housing.

[0006] As a further technical solution of this utility model, the second gear is disposed on the outer surface of the output shaft, and the two output shafts are symmetrically arranged. The second gear and the first gear cooperate to form a gear set. By controlling the meshing of the second gear, the connection control between the second gear and the first gear is completed, so that the first gear can independently drive either of the two output shafts. The two output shafts control the rotation of the front wheel and the rear wheel of the vehicle respectively, thereby realizing the power distribution of the vehicle.

[0007] As a further technical solution of this utility model, the outer surface of the outer shell is provided with a sliding groove for use with the movable card. The number of the first gear is two sets. By adjusting the position of the movable card, the outer shell can be installed in different microcars.

[0008] As a further technical solution of this utility model, a mating tooth is provided at the upper part of the outer surface of one end of the fixing part, and a toothed groove structure is provided in the sliding groove of the outer shell to cooperate with the mating tooth. By using the mating tooth and the toothed groove structure to fix the moving clip after it has been moved.

[0009] As a further technical solution of this utility model, a lifting slider is movably installed on the inner side of the movable card. The movable card and the lifting slider are elastically connected by a spring. By using the lifting slider, the movable card can be driven to move laterally in the slide groove. The elastic structure separates the mating tooth head and the tooth groove structure, which facilitates the movement and adjustment of the movable card.

[0010] As a further technical solution of this utility model, guide wheels are movably installed on the outer surfaces of both ends of the lifting slider. The upper and lower sets of guide wheels are symmetrically arranged. By using the guide wheels, the friction of the lifting slider during movement can be reduced, and the smoothness of the movement adjustment of the moving card can be improved.

[0011] As a further technical solution of this utility model, the upper end of the movable card is provided with a circular slot, and the inner side of the movable card is provided with a sliding groove for use with the lifting slider.

[0012] As a further technical solution of this utility model, the heat dissipation base plate is provided with a flow channel structure inside. The heat dissipation base plate and the outer shell are fixed together by a docking slot. By using the heat dissipation base plate, the oil in the outer shell can be cooled down, thereby improving the stability of the gear set in the outer shell during operation.

[0013] As a further technical solution of this utility model, several sets of heat dissipation fins are arranged side by side, and a docking nozzle is fixedly installed at one end of the heat dissipation base plate. The oil is introduced into the flow channel of the heat dissipation base plate through the docking nozzle by the pump body. The heat dissipation fins cool down the heat dissipation base plate when the vehicle is running, so that the oil temperature is reduced, and then it is transported back to the inside of the outer shell through the docking nozzle.

[0014] As a further technical solution of this utility model, a filter is fixedly installed on the lower outer surface of the docking nozzle.

[0015] The beneficial effects of this utility model are as follows: By setting a movable locking component, this utility model enables the transfer case of a microcar to have a fixed and adjustable structure, which can meet the installation and use of different models of microcars. This structure can be adaptively adjusted according to the key interface positions such as the connection point of the case, the length of the output shaft, or the center distance of the sprocket, realizing the precise matching of the physical connection between the transfer case and the frame, gearbox, and drive shaft. This allows the same transfer case base platform to be flexibly adapted to microcar models with different wheelbases, engine layouts, or drive forms without changing the core internal transmission logic, simply by adjusting the position or size of the external fixing points. This greatly improves the versatility of parts, reduces R&D and manufacturing costs, and meets the high demand of the microcar market for platform-based production. During operation, the setting of guide wheels can reduce the friction of the lifting slider when it moves, improving the smoothness of the movement adjustment of the movable locking component. When the movable locking component is moved to the corresponding position, the movable locking component is fixed by bolts, causing the movable locking component to move upward. The mating of the mating tooth head and tooth groove structure can fix the movable locking component after it has moved. By installing a heat dissipation base plate, the transfer case of this microcar has an auxiliary heat dissipation structure. It can utilize the movement of the vehicle itself to cool down the oil inside the transfer case, improving its stability during use. During operation, the pump body introduces the oil into the flow channel of the heat dissipation base plate through the docking nozzle. The heat dissipation fins cool down the heat dissipation base plate while the vehicle is moving, thus lowering the oil temperature. The oil is then transported back to the interior of the outer casing through the docking nozzle. The filter can filter out impurities in the oil. Attached Figure Description

[0016] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is an overall structural diagram of the movable card component in this utility model; Figure 3 This is an overall structural diagram of the heat dissipation base plate in this utility model.

[0018] In the diagram: 1. Outer shell; 2. Output shaft; 3. Input shaft; 4. Second gear; 5. First gear; 6. Moving clip; 7. Heat dissipation base plate; 8. Fixing part; 9. Dating tooth head; 10. Lifting slider; 11. Guide wheel; 12. Dating slot; 13. Heat dissipation fins; 14. Dating nozzle; 15. Filter; 16. Circular slot. Detailed Implementation

[0019] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] like Figures 1-3 As shown, a micro car transfer case includes an outer shell 1, an output shaft 2, and an input shaft 3. There are two output shafts 2. The outer shell 1 and the output shafts 2, as well as the outer shell 1 and the input shafts 3, are movably connected. The output shafts 2 and the input shafts 3 are connected by a second gear 4 and a first gear 5. Several sets of movable clips 6 are movably installed on the outer surface of the outer shell 1. One end of the movable clip 6 is fixed to the outer shell 1 by a fixing part 8. A heat dissipation base plate 7 is fixedly installed on the lower outer surface of the outer shell 1. Several sets of heat dissipation fins 13 are provided at the bottom of the outer shell 1.

[0021] The second gear 4 is disposed on the outer surface of the output shaft 2. The two output shafts 2 are symmetrically arranged. The second gear 4 and the first gear 5 cooperate to form a gear set. By controlling the meshing of the second gear 4, the connection control between the second gear 4 and the first gear 5 is completed, so that the first gear 5 can independently drive either of the two output shafts 2. The two output shafts 2 control the rotation of the front wheel and the rear wheel of the vehicle respectively, thereby realizing the power distribution of the vehicle.

[0022] The outer surface of the outer casing 1 is provided with a sliding groove for use with the movable clip 6. There are two sets of first gears 5. By adjusting the position of the movable clip 6, the outer casing 1 can be installed in different microcars.

[0023] A mating tooth 9 is provided on the upper part of the outer surface of one end of the fixing part 8. The outer shell 1 has a groove structure in the sliding groove that works with the mating tooth 9. By mating the mating tooth 9 and the groove structure, the movable card 6 can be fixed after it has moved.

[0024] The movable card 6 is movably mounted with a lifting slider 10 on its inner side. The movable card 6 and the lifting slider 10 are elastically connected by a spring. The lifting slider 10 can drive the movable card 6 to move laterally in the groove. The elastic structure separates the mating tooth head 9 from the tooth groove structure, making it convenient for the movable card 6 to move and adjust.

[0025] Guide wheels 11 are movably mounted on the outer surfaces of both ends of the lifting slider 10. The upper and lower sets of guide wheels 11 are symmetrically arranged. By using the guide wheels 11, the friction of the lifting slider 10 during movement can be reduced, and the smoothness of the movement adjustment of the moving clip 6 can be improved.

[0026] The upper end of the movable card 6 has a circular slot 16, and the inner side of the movable card 6 has a sliding groove for use with the lifting slider 10.

[0027] The heat dissipation base plate 7 has an internal flow channel structure. The heat dissipation base plate 7 and the outer shell 1 are fixed together by the docking slot 12. The heat dissipation base plate 7 can dissipate heat and cool down the oil in the outer shell 1, thereby improving the stability of the gear set in the outer shell 1 during operation.

[0028] Several sets of heat dissipation fins 13 are arranged side by side. A docking nozzle 14 is fixedly installed at one end of the heat dissipation base plate 7. The pump body guides the oil into the flow channel of the heat dissipation base plate 7 through the docking nozzle 14. The heat dissipation fins 13 cool down the heat dissipation base plate 7 when the vehicle is running, thereby reducing the temperature of the oil. The oil is then transported back to the interior of the outer shell 1 through the docking nozzle 14.

[0029] A filter 15 is fixedly installed on the lower outer surface of the connector 14.

[0030] A micro car transfer case, during operation, the guide wheel 11 can reduce the friction of the lifting slider 10 when it moves, and improve the smoothness of the movement adjustment of the moving clip 6. When the moving clip 6 is moved to the corresponding position, the moving clip 6 is fixed with bolts, so that the moving clip 6 moves upward. The engagement of the mating tooth head 9 and the tooth groove structure can fix the moving clip 6 after it has moved. By setting up a heat dissipation base plate 7, the transfer case of the microcar has an auxiliary heat dissipation structure when in use. It can use the movement of the vehicle itself to cool down the oil inside the transfer case, thereby improving its stability during use. During operation, the pump body introduces the oil into the flow channel of the heat dissipation base plate 7 through the docking nozzle 14. The heat dissipation fins 13 cool down the heat dissipation base plate 7 when the vehicle is moving, thereby reducing the oil temperature. The oil is then transported back to the interior of the outer casing 1 through the docking nozzle 14. The filter 15 can filter out impurities in the oil.

[0031] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

Claims

1. A miniature car transfer case, characterized in that, The device includes an outer casing (1), an output shaft (2), and an input shaft (3). There are two output shafts (2). The outer casing (1) and the output shaft (2) and the outer casing (1) and the input shaft (3) are movably connected. The output shaft (2) and the input shaft (3) are connected by a second gear (4) and a first gear (5). Several sets of movable clips (6) are movably installed on the outer surface of the outer casing (1). One end of the movable clip (6) is fixed to the outer casing (1) by a fixing part (8). A heat dissipation base plate (7) is fixedly installed on the lower outer surface of the outer casing (1). Several sets of heat dissipation fins (13) are provided at the bottom of the outer casing (1).

2. The microcar transfer case according to claim 1, characterized in that, The second gear (4) is disposed on the outer surface of the output shaft (2), and the two output shafts (2) are symmetrically arranged.

3. A microcar transfer case according to claim 1, characterized in that, The outer surface of the outer shell (1) is provided with a sliding groove for use with the movable card (6), and the number of the first gear (5) is two sets.

4. A microcar transfer case according to claim 3, characterized in that, A mating tooth (9) is provided on the upper part of the outer surface of one end of the fixing part (8), and a tooth groove structure is provided in the groove of the outer shell (1) to cooperate with the mating tooth (9).

5. A microcar transfer case according to claim 4, characterized in that, The movable card (6) has a lifting slider (10) movably installed on its inner side, and the movable card (6) and the lifting slider (10) are elastically connected by a spring.

6. A microcar transfer case according to claim 5, characterized in that, The lifting slider (10) has guide wheels (11) movably installed on the outer surfaces of both ends, and the upper and lower sets of guide wheels (11) are symmetrically arranged.

7. A microcar transfer case according to claim 6, characterized in that, The upper end of the movable card (6) is provided with a circular slot (16), and the inner side of the movable card (6) is provided with a sliding groove for use with the lifting slider (10).

8. A microcar transfer case according to claim 1, characterized in that, The heat dissipation base plate (7) has an internal flow channel structure, and the heat dissipation base plate (7) and the outer shell (1) are fixed together by a docking slot (12).

9. A microcar transfer case according to claim 8, characterized in that, Several sets of heat dissipation fins (13) are arranged side by side, and a docking nozzle (14) is fixedly installed at one end of the heat dissipation base plate (7).

10. A microcar transfer case according to claim 9, characterized in that, A filter (15) is fixedly installed on the lower outer surface of the docking nozzle (14).

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