CN-121977061-A - Transmission device and all-terrain vehicle adopting same

CN121977061ACN 121977061 ACN121977061 ACN 121977061ACN-121977061-A

Abstract

The application discloses a transmission device and an all-terrain vehicle adopting the same, wherein the transmission device comprises a shell, an input shaft, a transmission shaft, a linkage assembly and a stirring assembly, the input shaft is rotatably inserted into the shell, two ends of the input shaft are respectively an input end and an output end, the transmission shaft is rotatably inserted into the shell and is coaxial with the input shaft, one end of the transmission shaft, which is close to the input shaft, is a transmission end, a first spline is arranged on the peripheral wall of the output end, a second spline is arranged on the peripheral wall of the transmission end, the linkage assembly comprises a linkage sleeve, the linkage sleeve is slidably sleeved outside the output end and the transmission end, the linkage sleeve is slidably connected with the first spline and the second spline, the linkage assembly further comprises a sliding sleeve and a buffering elastic piece, two ends of the buffering elastic piece are respectively connected with the sliding sleeve, the stirring assembly is connected with the sliding sleeve, and the stirring assembly is used for driving the sliding sleeve to slide the buffering elastic piece to drive the linkage sleeve to be separated from the second spline. The transmission device has better power disconnection smoothness and longer service life.

Inventors

JIANG XUYI
LIU JIANYUAN
TANG XIAO
XU LIWEN

Assignees

浙江杰西嘉传动有限公司

Dates

Publication Date: 20260505
Application Date: 20260401

Claims (10)

1. A transmission, comprising: A housing; The input shaft is rotatably inserted into the shell, two ends of the input shaft are respectively an input end and an output end, the input end is positioned at the outer side of the shell, the output end is positioned in the shell, and a first spline is arranged on the peripheral wall of the output end; the transmission shaft is rotatably inserted into the shell and is coaxially arranged with the input shaft, one end of the transmission shaft, which is close to the input shaft, is a transmission end, and the peripheral wall of the transmission end is provided with a second spline; The linkage assembly comprises a linkage sleeve, wherein the linkage sleeve is sleeved on the outer sides of the output end and the transmission end, the linkage sleeve is provided with a first direction which is parallel to the axial direction of the input shaft and points to the input shaft from the transmission shaft, and a second direction which is opposite to the first direction, and the linkage sleeve can slide relative to the output end and the transmission end along the first direction or the second direction; The stirring assembly can apply force to the linkage sleeve to drive the linkage sleeve to slide along the first direction; The linkage assembly is characterized by further comprising a sliding sleeve and a buffering elastic piece, the sliding sleeve can slide along the axial direction of the input shaft relative to the linkage sleeve, two ends of the buffering elastic piece are respectively connected with the sliding sleeve and the linkage sleeve, the stirring assembly is connected with the sliding sleeve and used for driving the sliding sleeve to slide along the first direction, and the buffering elastic piece drives the linkage sleeve to be separated from the second spline.
2. The transmission device according to claim 1, wherein the sliding sleeve is provided with an inner hole and a plurality of sliding grooves, the inner hole extends along the axial direction of the input shaft, the linkage sleeve is slidably inserted into the inner hole, the sliding grooves are arranged at intervals along the circumferential direction of the sliding sleeve, the sliding grooves extend along the axial direction of the input shaft, each sliding groove is communicated with the inner hole and is also communicated with one end of the sliding sleeve, which is far away from the input end, the peripheral wall of the linkage sleeve is provided with a plurality of sliding protrusions, the sliding protrusions extend along the axial direction of the input shaft at intervals along the circumferential direction of the linkage sleeve, the sliding protrusions are slidably arranged in the sliding grooves respectively, the buffer elastic piece is sleeved on the periphery of the sliding sleeve, one end of the buffer elastic piece is connected with one end of the sliding sleeve, which is far away from the input end, and the other end of the buffer elastic piece is connected with one end of the linkage sleeve, which is close to the input end.
3. The transmission device according to claim 2, wherein a plurality of clamping grooves are formed in an outer peripheral wall of one end, far away from the input end, of the sliding sleeve, the clamping grooves and the sliding grooves are arranged in a staggered mode along the circumferential direction of the sliding sleeve, clamping grooves are formed in one end, close to the input end, of the sliding protrusion, the clamping grooves are arranged along the circumferential direction of the linkage sleeve, the linkage assembly further comprises a first stop piece and a second stop piece, the first stop piece is clamped with the clamping grooves, the clamping grooves can limit the first stop piece to slide relative to the clamping grooves along the axial direction of the input shaft, the second stop piece is clamped with the clamping grooves, the clamping grooves can limit the second stop piece to slide relative to the clamping grooves along the axial direction of the input shaft, and the buffer elastic piece is abutted between the first stop piece and the second stop piece.
4. The transmission of claim 1, wherein the linkage assembly further comprises a return spring, the return spring is sleeved on the input shaft, the return spring is located on a side of the linkage sleeve facing the input end, one end of the return spring is connected with the linkage sleeve, the other end of the return spring is connected with the input shaft, and the return spring is at least capable of providing a force to the linkage sleeve in the second direction.
5. The transmission of claim 1, wherein the linkage sleeve has a bore extending along an axis of the input shaft, the output end and the drive end are both located in the bore, the bore includes a connecting section and a positioning section, the connecting section is located at a side of the positioning section facing the input end, a key slot is formed in an inner wall of the connecting section, the key slot is slidably connected with the first spline and can be slidably connected with or separated from the second spline, a positioning boss is located at an outer peripheral wall of the drive end, the positioning boss is located at a side of the second spline facing away from the input end, the positioning boss is slidably fitted with the positioning section, the positioning boss supports the linkage sleeve in a radial direction of the linkage sleeve to limit movement of the linkage sleeve in a radial direction relative to the positioning boss when the positioning boss abuts the second spline, and the positioning boss can limit movement of the linkage sleeve in the axial direction of the second spline and is separated from the second spline.
6. The transmission of claim 1, wherein a stop protrusion is provided on a peripheral wall of an end of the sliding sleeve adjacent to the input end, the toggle assembly extends to a side of the stop protrusion facing away from the input end, and the toggle assembly is configured to push the stop protrusion to move in the first direction so as to slide the sliding sleeve in the first direction.
7. The transmission device according to claim 6, wherein the shifting assembly comprises a rocker arm, a shifting shaft, a shifting fork and a return elastic piece, the shifting shaft is rotatably inserted in the shell, the extending direction of the shifting shaft is perpendicular to the extending direction of the input shaft, the rocker arm is connected with one end of the shifting shaft, which is positioned on the outer side of the shell, and is used for driving the shifting shaft to rotate around the axis of the rocker arm, the shifting fork is connected with the part of the shifting shaft, which is positioned in the shell, one end of the shifting fork, which is far away from the shifting shaft, is provided with two shifting parts, the two shifting parts are arranged at intervals along the axial direction of the shifting shaft, the two shifting parts extend to one side of the stop protrusion, which is far away from the input end, the two shifting parts are used for pushing the stop protrusion to move along the first direction, the return elastic piece is sleeved on the shifting shaft, the two ends of the return elastic piece are respectively connected with the shifting fork and the shell, the two shifting fork elastic pieces are used for driving the shifting fork and the shifting fork to rotate along the second direction, and when the two shifting parts are far away from the stop protrusion.
8. The transmission according to claim 7, wherein the shift fork further comprises a connecting portion connected to a portion of the shift shaft located in the housing, the two shifting portions are connected to the connecting portion, the inner wall of the housing has two limiting surfaces, the two limiting surfaces are disposed at intervals along the axial direction of the shift shaft, and the two limiting surfaces are used for abutting and limiting the connecting portion from two sides so that the two shifting portions are kept in a non-contact state with the outer peripheral wall of the sliding sleeve along the axial direction of the shift shaft.
9. The transmission of claim 7, wherein the shift fork further has an abutment boss provided at one end of any one of the shifting portions adjacent to the shift shaft, a limiting boss is provided on an inner wall of the housing, the limiting boss is located on a moving path of the abutment boss, and the limiting boss is used for abutting and limiting the abutment boss so as to limit the return elastic member to drive the shift shaft and the shift fork to rotate to enable the shift fork to rotate more than a preset angle when returning.
10. An all-terrain vehicle comprising: a frame; a vehicle body panel that covers at least the vehicle frame; A travel system at least partially below the frame; a power system supported by the frame and drivingly connected to the travel system; it is characterized in that the method comprises the steps of, The all-terrain vehicle further comprising the transmission of any of claims 1-9, the input shaft being drivingly connected to the power system, the drive shaft being drivingly connected to the travel system.

Description

Transmission device and all-terrain vehicle adopting same Technical Field The application relates to the technical field of vehicles, in particular to a transmission device and an all-terrain vehicle adopting the transmission device. Background At present, when vehicles such as all-terrain vehicles and off-road vehicles work, power is output from an engine and then transmitted to a reduction gearbox through a transmission, and the reduction gearbox distributes the power to a drive axle of a running system. In some use situations, the power between the reduction gearbox and the front drive axle or the rear drive axle needs to be disconnected, for example, when the vehicle is changed from four-wheel drive to two-wheel drive, or when the vehicle fails, the vehicle needs to be rescued by a trailer, and in order to protect the transmission, the power of the drive axle corresponding to the wheels contacting the ground needs to be disconnected. Therefore, vehicles requiring power disconnection are often provided with a power disconnection mechanism that disconnects or connects the power between the reduction gearbox and the corresponding drive axle. The current power disconnection mechanism generally comprises two transmission shafts, a stirring assembly and a combination sleeve, wherein the two transmission shafts are respectively connected with a reduction gearbox and a corresponding driving axle, the combination sleeve is arranged at the end parts of the two transmission shafts, which are close to each other, and is in meshed transmission with the two transmission shafts, the stirring assembly is directly connected with the combination sleeve, and the stirring assembly is used for driving the combination sleeve to move so as to enable the combination sleeve to be connected or separated from the transmission shaft connected with the driving axle, thereby realizing power disconnection or connection between the reduction gearbox and the corresponding driving axle. However, when the vehicle is stopped, the combination sleeve is usually meshed with the transmission shaft tightly, and the poking assembly is used for driving the combination sleeve to move, so that the clamping is easy to occur, and the smoothness of power disconnection is poor. In addition, if the stirring component is used by force to drive the combination sleeve to move, the combination sleeve and the transmission shaft are easy to wear and even damage, so that the service life of the power disconnection mechanism is influenced. Disclosure of Invention In view of the above, the present application provides a transmission device and an all-terrain vehicle employing the same, wherein the transmission device has better power disconnection smoothness and longer service life. The embodiment of the application provides a transmission device, which comprises a shell, an input shaft, a transmission shaft, a linkage assembly and a toggle assembly, wherein the input shaft is rotatably inserted into the shell, two ends of the input shaft are respectively an input end and an output end, the input end is positioned at the outer side of the shell, the output end is positioned in the shell, a first spline is arranged on the peripheral wall of the output end, the transmission shaft is rotatably inserted into the shell and coaxially arranged with the input shaft, one end of the transmission shaft, which is close to the input shaft, is a transmission end, the peripheral wall of the transmission end is provided with a second spline, the linkage assembly comprises a linkage sleeve, the linkage sleeve is sleeved at the outer sides of the output end and the transmission end, the linkage sleeve is provided with a first direction which is parallel to the axial direction of the input shaft and is directed to the input shaft from the transmission shaft, and a second direction opposite to the first direction, the linkage sleeve can slide relative to the output end and the transmission end along the first direction, the linkage sleeve is slidably connected with the first spline, the linkage sleeve can be slidably connected with the second spline, when the linkage sleeve is slidably connected with the second spline sleeve, the transmission shaft is in a transmission shaft and is in a transmission shaft and a sliding sleeve is elastically connected with the input sleeve along the axial direction and the sliding sleeve, the transmission sleeve can be synchronously and the transmission assembly is in a sliding sleeve and a sliding sleeve along the sliding sleeve respectively, and the sliding sleeve can slide assembly and the sliding sleeve can slide along the sliding sleeve and the sliding sleeve respectively along the first direction and the transmission shaft and the transmission assembly, so that the buffer elastic piece drives the linkage sleeve to be separated from the second spline. In some embodiments, the sliding sleeve is provided with an inner hole and a plurality of sli