CN215673415U - Transfer case structure - Google Patents
Transfer case structure Download PDFInfo
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- CN215673415U CN215673415U CN202121399926.4U CN202121399926U CN215673415U CN 215673415 U CN215673415 U CN 215673415U CN 202121399926 U CN202121399926 U CN 202121399926U CN 215673415 U CN215673415 U CN 215673415U
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Abstract
The utility model discloses a transfer case structure, which comprises a transmission case shell, a speed reducing mechanism and a transfer case shell, wherein the transfer case shell comprises a transfer case cover and a transfer case body integrally formed with the transmission case shell, and a cavity for accommodating the speed reducing mechanism is formed between the transfer case cover and the transfer case body; the transfer case cover and the transfer case body are respectively provided with a second through hole which enables the cavity to be communicated with the outside; the speed reducing mechanism comprises a transfer case input shaft and a transfer case output shaft in transmission connection with the transfer case input shaft; the head end of the transfer case input shaft is rotatably connected with the transfer case cover. The utility model has the advantages of good positioning reliability, low noise, simple structure and light weight, and is beneficial to the light weight of the whole vehicle.
Description
Technical Field
The utility model relates to an engine, in particular to a transfer case structure.
Background
The transfer case is a device for distributing the power of an engine, the transfer case of the existing motorcycle is a split type external transfer case generally, the split type external transfer case is arranged outside the engine, an input shaft of the split type external transfer case is connected with an output shaft of an engine gearbox during assembly, a shell of the split type external transfer case is externally connected to a shell of the engine, and the connection mode is poor in positioning reliability and large in noise, and is not beneficial to light weight of the whole motorcycle.
Disclosure of Invention
In view of the above, the utility model aims to overcome the defects in the prior art, and provides a transfer case structure which is good in positioning reliability, low in noise, simple in structure, light in weight and beneficial to light weight of the whole transfer case.
The transfer case structure comprises a transmission case shell, a speed reducing mechanism and a transfer case shell, wherein the transfer case shell comprises a transfer case cover and a transfer case body which is integrally formed with the transmission case shell, and a cavity for accommodating the speed reducing mechanism is formed between the transfer case cover and the transfer case body; the transfer case cover and the transfer case body are respectively provided with a second through hole which enables the cavity to be communicated with the outside; the speed reducing mechanism comprises a transfer case input shaft and a transfer case output shaft in transmission connection with the transfer case input shaft; the head end of the transfer case input shaft is rotatably connected with the transfer case cover, the tail end of the transfer case input shaft penetrates through the first through hole and extends into the interior of the gearbox shell, the transfer case output shaft is rotatably arranged in the transfer case shell, and two ends of the transfer case output shaft respectively penetrate through the second through holes.
Furthermore, a connecting hole used for being connected with a rear drive half shaft of the motorcycle is formed in the middle of the output shaft of the transfer case, the connecting hole penetrates through the connecting hole in the axial direction, and a spline is arranged inside the connecting hole.
Furthermore, the speed reducing mechanism further comprises a transfer case transmission shaft, the transfer case input shaft, the transfer case transmission shaft and the transfer case output shaft are gear shafts, small gear parts and large gear parts are arranged on the transfer case transmission shaft at intervals along the axial direction, the transfer case input shaft is in transmission connection with the large gear parts, and the transfer case output shaft is in transmission connection with the small gear parts.
Furthermore, the pinion gear is located on one side close to the transfer case body, and the bull gear is located on one side close to the transfer case cover.
Further, the transfer case body is located on a rear side of the transfer case housing.
Furthermore, a plurality of first connecting lugs are arranged on the transfer case body at intervals along the circumferential direction, and a second connecting lug is arranged on the transfer case cover corresponding to the plurality of first connecting lugs.
Furthermore, a plurality of third through holes which enable the cavity to be communicated with the inner cavity of the gearbox shell are formed in the transfer case body.
Furthermore, a lubricating oil filling opening and a filling opening cover used for sealing the lubricating oil filling opening are arranged on the upper side of the transfer case cover, and a lubricating oil discharging opening and an oil discharging opening cover used for sealing the lubricating oil discharging opening are arranged on the lower side of the transfer case cover.
Further, the lubricating oil filling opening is a first threaded hole which enables the cavity to be communicated with the outside, the filling opening cover is a first bolt matched with the first threaded hole, the lubricating oil discharging opening is a second threaded hole which enables the cavity to be communicated with the outside, and the oil discharging opening cover is a second bolt matched with the second threaded hole.
Furthermore, a sensor mounting seat for mounting a rotating speed sensor is arranged at the rear part of the transfer case body, a fourth through hole for communicating the cavity with the outside is arranged in the sensor mounting seat, and an extension line of the axis of the fourth through hole is intersected with the axis of the transfer case output shaft.
The utility model has the beneficial effects that: through making the integral type structure with gearbox casing and transfer case casing, be connected the tail end of transfer case input shaft and the transmission output shaft transmission of engine during the assembly, the head end of transfer case input shaft passes through the bearing and is connected with the transfer case lid, and this kind of connected mode is good for traditional split type external transfer case location reliability, and the noise is little, simple structure simultaneously, and light in weight is favorable to the whole car lightweight of motorcycle.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the transmission housing and transfer case housing of the present invention;
FIG. 3 is a schematic view of the transfer case body of the present invention in connection with a speed sensor;
FIG. 4 is a schematic structural view of a transfer case cover of the present invention.
Description of reference numerals: the transfer case comprises a 1-transmission case shell, a 2-speed reducing mechanism, a 21-transfer case input shaft, a 22-transfer case output shaft, a 221-connecting hole, a 222-spline, a 23-transfer case transmission shaft, a 231-pinion part, a 232-bull gear part, a 31-transfer case cover, a 311-second connecting support lug, a 312-lubricating oil filling port, a 313-filling port cover, a 314-lubricating oil discharging port, a 315-oil discharging port cover, a 32-transfer case body, a 321-first through hole, a 322-first connecting support lug, a 323-sensor mounting seat, a 324-third through hole, a 33-second through hole, a 34-cavity and a 4-rotating speed sensor.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1 to 4, the transfer case structure in the present embodiment includes a transmission case 1, a reduction gear mechanism 2 and a transfer case housing, the transfer case housing includes a transfer case cover 31 and a transfer case body 32 integrally formed with the transmission case 1, and a cavity 34 for accommodating the reduction gear mechanism 2 is formed between the transfer case cover 31 and the transfer case body 32; the transfer case body 32 is provided with a first through hole 321 which enables the cavity 34 to be communicated with the inner cavity of the transmission case shell 1, and the transfer case cover 31 and the transfer case body 32 are both provided with a second through hole 33 which enables the cavity 34 to be communicated with the outside; the speed reducing mechanism 2 comprises a transfer case input shaft 21 and a transfer case output shaft 22 in transmission connection with the transfer case input shaft 21; the head end of the transfer case input shaft 21 is rotatably connected with the transfer case cover 31, the tail end of the transfer case input shaft 21 passes through the first through hole 321 and extends into the interior of the transfer case shell 1, the transfer case output shaft 22 is rotatably arranged in the interior of the transfer case shell, and the two ends of the transfer case output shaft 22 respectively pass through the second through holes 33. The transfer case shell 1 and the transfer case shell are made into an integral structure, the tail end of the transfer case input shaft 21 is in transmission connection with the transmission case output shaft of an engine during assembly, and the head end of the transfer case input shaft 21 is connected with the transfer case cover 31 through a bearing.
In the present embodiment, as shown in fig. 1, a connecting hole 221 for connecting with a rear drive axle shaft of the motorcycle is provided in the middle of the transfer case output shaft 22, the connecting hole 221 penetrates in the axial direction, and a spline 222 is provided inside the connecting hole 221. The rear-drive half shaft of the motorcycle is inserted into the output shaft 22 of the transfer case to realize transmission connection between the rear-drive half shaft and the output shaft, and the rear-drive half shaft of the motorcycle is simple in structure and convenient to disassemble. The power of the engine is input into the transfer case through the output shaft of the gearbox and finally output to the rear drive half shaft of the motorcycle through the output shaft 22 of the transfer case.
In this embodiment, as shown in fig. 1, the speed reduction mechanism 2 further includes a transfer case transmission shaft 23, the transfer case input shaft 21, the transfer case transmission shaft 23 and the transfer case output shaft 22 are all gear shafts, a small gear portion 231 and a large gear portion 232 are axially arranged on the transfer case transmission shaft 23 at intervals, the transfer case input shaft 21 is in transmission connection with the large gear portion 232, and the transfer case output shaft 22 is in transmission connection with the small gear portion 231. The gear on the transfer case input shaft 21 is meshed with the large gear portion 232, the gear on the transfer case output shaft 22 is meshed with the small gear portion 231, the transfer case output shaft 22 rotates to drive the transfer case transmission shaft 23 to rotate, the transfer case transmission shaft 23 rotates to drive the transfer case output shaft 22 to rotate, the rotation directions of the transfer case output shaft 22 and the transfer case transmission shaft 23 are the same, and the axes of the transfer case input shaft 21, the transfer case transmission shaft 23 and the transfer case output shaft 22 are parallel to each other.
In the present embodiment, as shown in fig. 1, the pinion gear 231 is located on the side close to the transfer case body 32, and the bull gear 232 is located on the side close to the transfer case cover 31, so that the position of the center of gravity is optimized, thereby improving the formation stability.
In this embodiment, as shown in FIG. 2, the transfer case body 32 is located on the rear side of the transmission housing 1 for facilitating connection with the rear drive axle shaft of the motorcycle.
In this embodiment, as shown in fig. 2, a plurality of first connecting lugs 322 are circumferentially arranged on the transfer case body 32 at intervals, and a second connecting lug 311 is respectively arranged on the transfer case cover 31 corresponding to the plurality of first connecting lugs 322. The quantity of first connection journal stirrup 322 and second connection journal stirrup 311 is 9 in this embodiment, is provided with the screw thread mounting hole on the first connection journal stirrup 322, and the position that the second connection journal stirrup 311 corresponds the screw thread mounting hole is provided with the bolt via hole, passes each bolt via hole respectively through 9 bolts and respectively with screw thread mounting hole threaded connection, realizes being connected of transfer case box 32 and transfer case lid 31, and the simple installation, convenient to detach.
In this embodiment, as shown in FIG. 2, the transfer case 32 is provided with a plurality of third through holes 324 that communicate the cavity 34 with the interior of the transmission housing 1. In the embodiment, the number of the third through holes 324 is two, and the cavity 34 of the transfer case shell is communicated with the inner cavity of the transfer case shell 1 through the first through hole 321 and the two third through holes 324, so that the balance of air pressure and lubricating oil flow in the transfer case is balanced.
In the embodiment, as shown in fig. 4, a lubricating oil filling port 312 and a filling port cover 313 for closing the lubricating oil filling port 312 are arranged on the upper side of the transfer case cover 31, and a lubricating oil discharging port 314 and a discharging port cover 315 for closing the lubricating oil discharging port 314 are arranged on the lower side of the transfer case cover 31; the oil filling port 312 is a first threaded hole for communicating the cavity 34 with the outside, the filling port cover 313 is a first bolt for fitting with the first threaded hole, the oil discharging port 314 is a second threaded hole for communicating the cavity 34 with the outside, and the oil discharging port cover 315 is a second bolt for fitting with the second threaded hole. Lubricating oil can be filled by screwing the first bolt out of the first threaded hole, and the lubricating oil filling port 312 can be not communicated with the outside by screwing the first bolt; with the second bolt from the automatic outflow of back-out lubricating oil under the action of gravity in the second screw hole, screw the second bolt and can close lubricating oil drain 314, prevent that lubricating oil from flowing.
In the present embodiment, as shown in fig. 2 to 3, the rear portion of the transfer case body 32 is provided with a sensor mounting seat 323 for mounting the rotation speed sensor 4, the sensor mounting seat 323 is internally provided with a fourth through hole for communicating the cavity 34 with the outside, and an extension line of an axis of the fourth through hole intersects with an axis of the transfer case output shaft 22. The rotating speed sensor 4 can be installed in the fourth through hole, so that the rotating speed sensor 4 faces to the gear on the transfer case output shaft 22 and is used for detecting the rotating speed of the gear on the transfer case output shaft 22, and therefore the rotating speed of the transfer case output shaft 22 can be obtained.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (10)
1. The utility model provides a transfer case structure, includes transmission housing (1), reduction gears (2) and transfer case casing, its characterized in that: the transfer case shell comprises a transfer case cover (31) and a transfer case body (32) which is integrally formed with the transfer case shell (1), and a cavity (34) for accommodating the speed reducing mechanism (2) is formed between the transfer case cover (31) and the transfer case body (32); the transfer case body (32) is provided with a first through hole (321) which enables the cavity (34) to be communicated with an inner cavity of the gearbox shell (1), and the transfer case cover (31) and the transfer case body (32) are respectively provided with a second through hole (33) which enables the cavity (34) to be communicated with the outside; the speed reducing mechanism (2) comprises a transfer case input shaft (21) and a transfer case output shaft (22) in transmission connection with the transfer case input shaft (21); the head end of the transfer case input shaft (21) is rotatably connected with the transfer case cover (31), the tail end of the transfer case input shaft (21) penetrates through the first through hole (321) and extends into the interior of the transfer case shell (1), the transfer case output shaft (22) is rotatably arranged in the transfer case shell, and the two ends of the transfer case output shaft (22) penetrate through the second through holes (33) respectively.
2. The transfer case structure of claim 1, wherein: the middle part of the transfer case output shaft (22) is provided with a connecting hole (221) used for being connected with a rear drive half shaft of the motorcycle, the connecting hole (221) penetrates through the connecting hole along the axial direction, and a spline (222) is arranged inside the connecting hole (221).
3. The transfer case structure of claim 1, wherein: the speed reducing mechanism (2) further comprises a transfer case transmission shaft (23), the transfer case input shaft (21), the transfer case transmission shaft (23) and the transfer case output shaft (22) are gear shafts, small gear parts (231) and large gear parts (232) are arranged on the transfer case transmission shaft (23) at intervals along the axial direction, the transfer case input shaft (21) is in transmission connection with the large gear parts (232), and the transfer case output shaft (22) is in transmission connection with the small gear parts (231).
4. The transfer case structure of claim 3, wherein: the small gear part (231) is positioned at one side close to the transfer case body (32), and the large gear part (232) is positioned at one side close to the transfer case cover (31).
5. The transfer case structure of claim 1, wherein: the transfer case body (32) is located on the rear side of the transmission case body (1).
6. The transfer case structure of claim 1, wherein: a plurality of first connecting lugs (322) are arranged on the transfer case body (32) at intervals along the circumferential direction, and a second connecting lug (311) is arranged on the transfer case cover (31) corresponding to the positions of the first connecting lugs (322).
7. The transfer case structure of claim 1, wherein: the transfer case body (32) is provided with a plurality of third through holes (324) which enable the cavity (34) to be communicated with the inner cavity of the transmission case shell (1).
8. The transfer case structure of claim 1, wherein: the transfer case is characterized in that a lubricating oil filling opening (312) and a filling opening cover (313) used for sealing the lubricating oil filling opening (312) are arranged on the upper side of the transfer case cover (31), and a lubricating oil discharging opening (314) and a discharging opening cover (315) used for sealing the lubricating oil discharging opening (314) are arranged on the lower side of the transfer case cover (31).
9. The transfer case structure of claim 8, wherein: the lubricating oil filling port (312) is a first threaded hole which enables the cavity (34) to be communicated with the outside, the filling port cover (313) is a first bolt matched with the first threaded hole, the lubricating oil discharging port is a second threaded hole which enables the cavity (34) to be communicated with the outside, and the oil discharging port cover is a second bolt matched with the second threaded hole.
10. The transfer case structure of claim 1, wherein: the rear part of the transfer case body (32) is provided with a sensor mounting seat (323) used for mounting a rotating speed sensor (4), a fourth through hole enabling the cavity (34) to be communicated with the outside is arranged inside the sensor mounting seat (323), and the extension line of the axis of the fourth through hole is intersected with the axis of the transfer case output shaft (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121399926.4U CN215673415U (en) | 2021-06-23 | 2021-06-23 | Transfer case structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121399926.4U CN215673415U (en) | 2021-06-23 | 2021-06-23 | Transfer case structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215673415U true CN215673415U (en) | 2022-01-28 |
Family
ID=79976963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121399926.4U Active CN215673415U (en) | 2021-06-23 | 2021-06-23 | Transfer case structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215673415U (en) |
-
2021
- 2021-06-23 CN CN202121399926.4U patent/CN215673415U/en active Active
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