CN219564654U - Transmission device and vehicle - Google Patents
Transmission device and vehicle Download PDFInfo
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- CN219564654U CN219564654U CN202320511276.0U CN202320511276U CN219564654U CN 219564654 U CN219564654 U CN 219564654U CN 202320511276 U CN202320511276 U CN 202320511276U CN 219564654 U CN219564654 U CN 219564654U
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- universal joint
- wheel end
- intermediate shaft
- mounting groove
- hub bearing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
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Abstract
The utility model discloses a transmission device and a vehicle with the same, wherein the transmission device comprises: the hub bearing is provided with a mounting groove at one axial side; the axle shaft assembly comprises a wheel end universal joint and an intermediate shaft, wherein the wheel end universal joint is connected with one end of the intermediate shaft, at least part of the wheel end universal joint is positioned in the mounting groove, and the peripheral wall of the wheel end universal joint is in spline fit with the inner peripheral wall of the mounting groove. According to the transmission device disclosed by the utility model, the mounting groove is formed in one axial side of the hub bearing, the half shaft component comprises the intermediate shaft and the wheel end universal joint, the wheel end universal joint is connected with one end of the intermediate shaft, at least part of the wheel end universal joint is positioned in the mounting groove, the peripheral wall of the wheel end universal joint is in spline fit with the inner peripheral wall of the mounting groove, the rigidity of the joint of the wheel end universal joint and the hub bearing is effectively improved, the overall reliability of the transmission device is improved, the friction abnormal sound of the joint of the wheel end universal joint and the hub bearing is reduced, and the use feeling of a user is improved.
Description
Technical Field
The utility model relates to the technical field of vehicles, in particular to a transmission device and a vehicle.
Background
Currently, power transmission of vehicles is generally carried out to wheels through a gearbox, a differential, a half shaft and a hub bearing. However, the rigidity of the joint of the existing half shaft and the hub bearing is relatively low, and under the working condition of abrupt torque change, the speed difference exists between the half shaft and the end face of the hub bearing, so that abnormal friction noise is easy to generate, an antifriction coating is usually required to be coated on the end face, but along with the improvement of the acceleration performance of the whole automobile, the torque is increased, and the antifriction coating can not meet the use requirements of the automobile.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the transmission device which effectively improves the rigidity of the joint of the wheel end universal joint and the hub bearing and improves the overall reliability of the transmission device.
The utility model also provides a vehicle comprising the transmission device.
A transmission according to an embodiment of the present utility model is characterized by comprising: a hub bearing, wherein a mounting groove is formed in one axial side of the hub bearing; the axle shaft assembly comprises a wheel end universal joint and an intermediate shaft, wherein the wheel end universal joint is connected with one end of the intermediate shaft, at least part of the wheel end universal joint is positioned in the mounting groove, and the peripheral wall of the wheel end universal joint is in spline fit with the inner peripheral wall of the mounting groove.
According to the transmission device provided by the embodiment of the utility model, the mounting groove is formed in one axial side of the hub bearing, the half shaft component comprises the intermediate shaft and the wheel end universal joint, the wheel end universal joint is connected with one end of the intermediate shaft, at least part of the wheel end universal joint is positioned in the mounting groove, the peripheral wall of the wheel end universal joint is in spline fit with the inner peripheral wall of the mounting groove, the rigidity of the joint of the wheel end universal joint and the hub bearing is effectively improved, the overall reliability of the transmission device is improved, the friction abnormal sound of the joint of the wheel end universal joint and the hub bearing is reduced, and the use feeling of a user is improved.
In some embodiments of the present utility model, the inner wall surface opposite to the mounting groove is provided with an inner spline, the outer peripheral wall of the wheel end universal joint is provided with a limiting portion and an outer spline matched with the inner spline, the limiting portion is located at one side of the outer spline away from the bottom wall of the mounting groove, and the limiting portion is matched with the hub bearing to limit the movement of the hub bearing towards the direction of the intermediate shaft.
In some embodiments of the present utility model, the limiting portion is formed as a protrusion provided on an outer peripheral wall of the wheel end universal joint, and a side of the protrusion facing away from the intermediate shaft is abutted against the hub bearing.
In some embodiments of the present utility model, the bottom wall of the mounting groove has a first mounting hole, the end surface of the wheel end universal joint opposite to the bottom wall of the mounting groove has a second mounting hole matched with the first mounting hole, and the fastener sequentially penetrates through the first mounting hole and the second mounting hole.
In some embodiments of the utility model, a side of the fastener remote from the wheel end universal joint has a seal portion located on a side of the hub bearing remote from the mounting groove and abutting the hub bearing, the seal portion having a diameter greater than a bore diameter of the first mounting hole.
In some embodiments of the present utility model, the second mounting hole includes a first hole and a second hole sequentially arranged along a penetrating direction of the fastener, the first hole is located at one end of the second hole near the first mounting hole, an inner wall of the first hole is in interference fit with the fastener, an inner wall of the second hole has an internal thread, and the fastener has an external thread matched with the internal thread.
In some embodiments of the utility model, the wheel end universal joint comprises: the outer circumferential wall of the wheel end outer ball cage is in spline fit with the inner circumferential wall of the mounting groove, and the wheel end outer ball cage is provided with a first assembly groove; the inner ball cage at the wheel end is at least partially positioned in the first assembly groove and is welded with one end of the intermediate shaft.
In some embodiments of the present utility model, the axle shaft assembly further comprises: the other end of the intermediate shaft is connected with the differential end universal joint, and one end of the differential end universal joint, which is far away from the intermediate shaft, is connected with the differential mechanism.
In some embodiments of the present utility model, the differential end universal joint includes: the differential end outer ball cage is connected with the differential mechanism at one end, far away from the intermediate shaft, of the differential end outer ball cage, and the differential end outer ball cage is provided with a second assembly groove; and at least part of the inner ball cage at the differential end is positioned in the second assembly groove and is welded with the other end of the intermediate shaft.
The vehicle comprises the transmission device.
According to the vehicle provided by the embodiment of the utility model, the transmission device is arranged, the mounting groove is formed in one axial side of the hub bearing, the half shaft component comprises the intermediate shaft and the wheel end universal joint, the wheel end universal joint is connected with one end of the intermediate shaft, at least part of the wheel end universal joint is positioned in the mounting groove, the peripheral wall of the wheel end universal joint is in spline fit with the inner peripheral wall of the mounting groove, the rigidity of the joint of the wheel end universal joint and the hub bearing is effectively improved, the overall reliability of the transmission device is improved, the friction abnormal sound of the joint of the wheel end universal joint and the hub bearing is reduced, and the use feeling of a user is improved.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is an exploded view of a transmission according to an embodiment of the present utility model;
FIG. 2 is a cross-sectional view of a half shaft assembly according to an embodiment of the present utility model;
FIG. 3 is a cross-sectional view of a transmission according to an embodiment of the utility model;
FIG. 4 is a perspective view of a fastener according to an embodiment of the present utility model;
FIG. 5 is a cross-sectional view of a wheel end universal joint according to an embodiment of the present utility model;
fig. 6 is a cross-sectional view of a differential end universal joint according to an embodiment of the present utility model.
Reference numerals:
100. a transmission device;
1. a hub bearing; 11. a mounting groove; 12. an internal spline; 13. a first mounting hole;
2. a half shaft assembly; 21. wheel end universal joint; 211. an outer ball cage at the wheel end; 2111. an external spline; 2112. a limit part; 2113. a first fitting groove; 212. a ball cage in the wheel end; 2121. a first fitting portion; 2122. a first connection portion; 213. a steel ball; 214. a retainer; 215. a second mounting hole; 2151. a first hole; 2152. a second hole; 22. an intermediate shaft; 23. a differential end universal joint; 231. an outer ball cage at the differential end; 2311. a second fitting groove; 232. a ball cage in the differential end; 2321. a second fitting portion; 2322. a second connecting portion; 233. a rolling bearing;
3. a fastener; 31. a sealing part; 32. and (3) sealing rings.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
A transmission 100 according to an embodiment of the present utility model is described below with reference to the accompanying drawings.
As shown in fig. 1-3, a transmission 100 according to one embodiment of the present utility model includes a hub bearing 1 and a axle assembly 2. Wherein, mounting groove 11 has been seted up to one side of wheel hub bearing 1's axial, and semi-axis subassembly 2 includes jackshaft 22 and wheel end universal joint 21, and wheel end universal joint 21 is connected with the one end of jackshaft 22, and at least part of wheel end universal joint 21 is located mounting groove 11, and the outer peripheral wall spline fit of wheel end universal joint 21 and the inner peripheral wall spline fit of mounting groove 11.
It can be understood that one end of the intermediate shaft 22 is connected with the wheel end universal joint 21, the other end is connected with the differential end universal joint 23, torque from the differential is transmitted to the wheel through the differential end universal joint 23, the intermediate shaft 22, the wheel end universal joint 21 and the hub bearing 1, and the connection between the wheel end universal joint 21 and the hub bearing 1 is realized through the direct spline fit of the outer peripheral wall of the wheel end universal joint 21 and the inner peripheral wall of the mounting groove 11, so that the rigidity of the joint between the wheel end universal joint 21 and the hub bearing 1 is effectively improved, the overall reliability of the transmission device 100 is improved, the friction abnormal noise at the joint between the wheel end universal joint and the hub bearing 1 is reduced, and the use feeling of a user is improved. Meanwhile, compared with the prior art that the handle part of the wheel end universal joint 21 is connected with the hub bearing 1 or the wheel end universal joint 21 is connected with the hub bearing 1 through end face teeth, the rigidity of the joint of the wheel end universal joint 21 and the hub bearing 1 is higher, and the distance between the wheel end universal joint 21 and the center of the wheel is shortened, so that the torque of a differential mechanism is better transmitted to the wheel, and the reliability of a vehicle using the transmission device 100 is improved.
According to the transmission device 100 of the embodiment of the utility model, the mounting groove 11 is formed in one axial side of the hub bearing 1, the half shaft assembly 2 comprises the intermediate shaft 22 and the wheel end universal joint 21, the wheel end universal joint 21 is connected with one end of the intermediate shaft 22, at least part of the wheel end universal joint 21 is positioned in the mounting groove 11, the peripheral wall of the wheel end universal joint 21 is in spline fit with the inner peripheral wall of the mounting groove 11, the rigidity of the joint of the wheel end universal joint 21 and the hub bearing 1 is effectively improved, the overall reliability of the transmission device 100 is improved, friction abnormal noise at the joint of the wheel end universal joint 21 and the wheel end universal joint is reduced, and the use feeling of a user is improved.
In some embodiments of the present utility model, as shown in fig. 1 to 3 and 5, the opposite inner wall surfaces of the mounting groove 11 are provided with the internal spline 12, the outer peripheral wall of the wheel end universal joint 21 is provided with a stopper portion 2112 and an external spline 2111 engaged with the internal spline 12, the stopper portion 2112 is located on a side of the external spline 2111 away from the bottom wall of the mounting groove 11, and the stopper portion 2112 is engaged with the hub bearing 1 for restricting movement of the hub bearing 1 toward the intermediate shaft 22.
Thereby, the connection of the outer peripheral wall of the wheel end universal joint 21 with the inner peripheral wall of the mounting groove 11 is achieved by the cooperation of the female spline 12 and the male spline 2111. Meanwhile, the limiting portion 2112 limits the hub bearing 1 from moving toward the intermediate shaft 22 during torque transmission of the transmission 100, thereby improving reliability of the transmission 100. In addition, by providing the mounting groove 11 with the internal spline 12 on the inner wall surface opposite to the mounting groove and the external spline 2111 on the outer peripheral wall of the wheel end universal joint 21, the overall weight of the transmission 100 is further reduced, and the weight reduction requirement of the vehicle is satisfied.
In some embodiments of the present utility model, as shown in fig. 1, 3 and 5, the stopper portion 2112 is formed as a protrusion provided on the outer peripheral wall of the wheel end universal joint 21, and the side of the protrusion facing away from the intermediate shaft 22 is stopped against the hub bearing 1. By this, the limiting portion 2112 limits the movement of the hub bearing 1 in the direction of the intermediate shaft 22.
In some embodiments of the present utility model, as shown in fig. 1, 3 and 4, the bottom wall of the mounting groove 11 has a first mounting hole 13, the end face of the wheel end universal joint 21 opposite to the bottom wall of the mounting groove 11 has a second mounting hole 215 that mates with the first mounting hole 13, and the fastener 3 sequentially passes through the first mounting hole 13 and the second mounting hole 215. Therefore, the first mounting hole 13 and the second mounting hole 215 are sequentially penetrated through by the fastener 3 to realize the connection of the hub bearing 1 and the wheel end universal joint 21, so that the hub bearing 1 and the wheel end universal joint 21 are prevented from falling off in the process of transmitting torque by the transmission device 100, and the reliability of the transmission device 100 is improved.
In some embodiments of the present utility model, as shown in fig. 3 and 4, the side of the fastener 3 away from the wheel end universal joint 21 has a sealing portion 31, the sealing portion 31 being located on the side of the hub bearing 1 away from the mounting groove 11 and abutting the hub bearing 1, the diameter of the sealing portion 31 being larger than the aperture of the first mounting hole 13. Thus, the sealing portion 31 seals the first mounting hole 13, so that the liquid in the mounting groove 11 is prevented from flowing out of the first mounting hole 13, and the reliability of the transmission 100 is improved. At the same time, the sealing 31 cooperates with the hub bearing 1 to limit the movement of the hub bearing 1 in a direction away from the intermediate shaft 22 during torque transmission of the transmission 100.
Further, the opposite inner wall surfaces of the mounting groove 11 are provided with the internal spline 12, the outer peripheral wall of the wheel end universal joint 21 is provided with a limiting portion 2112 and an external spline 2111 matched with the internal spline 12, the limiting portion 2112 is located on one side of the external spline 2111 away from the bottom wall of the mounting groove 11, and the limiting portion 2112 is matched with the hub bearing 1 to limit the movement of the hub bearing 1 toward the intermediate shaft 22. Therefore, in the process of transmitting torque by the transmission device 100, the limiting part 2112 limits the hub bearing 1 to move towards the direction of the intermediate shaft 22, and the fastening piece 3 limits the hub bearing 1 to move towards the direction deviating from the intermediate shaft 22, so that the falling-off between the wheel end universal joint 21 and the hub bearing 1 is effectively avoided, and the reliability of the transmission device 100 is improved.
In some embodiments of the present utility model, as shown in fig. 3 to 5, the second mounting hole 215 includes a first hole 2151 and a second hole 2152 sequentially arranged along a direction in which the fastener 3 is threaded, the first hole 2151 is located at an end of the second hole 2152 near the first mounting hole 13, an inner wall of the first hole 2151 is interference-fitted with the fastener 3, an inner wall of the second hole 2152 has an internal thread, and the fastener 3 has an external thread that is engaged with the internal thread. Therefore, the connection between the fastener 3 and the wheel end universal joint 21 is realized through the threaded fit between the inner wall of the second hole 2152 and the fastener 3, and the sealing of the first hole 2151 is realized through the interference fit between the inner wall of the first hole 2151 and the fastener 3, so that the liquid in the mounting groove 11 is prevented from flowing in from the first hole 2151, and the reliability of the transmission device 100 is improved.
Further, the outer peripheral wall of the fastener 3 has a seal ring 32, and when the fastener 3 is sequentially pierced through the first mounting hole 13, the first hole 2151, and the second hole 2152, an interference fit between the fastener 3 and the first hole 2151 is achieved by the seal ring 32.
In some embodiments of the present utility model, as shown in fig. 2, 3 and 5, the wheel end universal joint 21 includes a wheel end outer ball cage 211 and a wheel end inner ball cage 212. Wherein, the outer peripheral wall of the outer ball cage 211 at the wheel end is in spline fit with the inner peripheral wall of the mounting groove 11, the outer ball cage 211 at the wheel end is provided with a first mounting groove 2113, and at least part of the inner ball cage 212 at the wheel end is positioned in the first mounting groove 2113 and is welded with one end of the intermediate shaft 22.
Therefore, the outer peripheral wall of the wheel end outer ball cage 211 is directly matched with the inner peripheral wall spline of the mounting groove 11 to realize connection of the wheel end outer ball cage 211 and the inner peripheral wall spline, so that the rigidity of the joint of the wheel end outer ball cage 211 and the hub bearing 1 is effectively improved, the overall reliability of the transmission device 100 is improved, the friction abnormal sound of the joint of the wheel end outer ball cage 211 and the hub bearing 1 is reduced, and the use feeling of a user is improved. Meanwhile, the wheel end universal joint 21 is connected with the intermediate shaft 22 through the welded connection of the wheel end inner ball cage 212 and one end of the intermediate shaft 22, and one end connected with the intermediate shaft 22 extends out of the first assembly groove 2113 through the arrangement that at least part of the wheel end inner ball cage 212 is positioned in the first assembly groove 2113, so that the reliability of the connection of the wheel end inner ball cage 212 and the intermediate shaft 22 is improved, and the welding difficulty is reduced. In addition, the connection mode between the inner ball cage 212 at the wheel end and the intermediate shaft 22 adopts welding connection, so that the connection reliability of the inner ball cage and the intermediate shaft is further ensured, and the reliability of the transmission torque process of the transmission device 100 is improved.
Further, the stopper portion 2112 is formed as a protrusion provided on the outer peripheral wall of the wheel end outer cage 211, and the side of the protrusion facing away from the intermediate shaft 22 is stopped against the hub bearing 1. By this, the limiting portion 2112 limits the movement of the hub bearing 1 in the direction of the intermediate shaft 22.
Further, the wheel end inner ball cage 212 includes a first fitting portion 2121 and a first connecting portion 2122, the first fitting portion 2121 is located in the first fitting groove 2113, the first connecting portion 2122 extends out of the first fitting groove 2113, and an end of the first connecting portion 2122 remote from the first fitting portion 2121 is welded to the intermediate shaft 22. By this arrangement, the connection of the in-wheel-end ball cage 212 and the intermediate shaft 22 is achieved.
In some embodiments of the present utility model, as shown in fig. 2, 3 and 5, the wheel end universal joint 21 further includes steel balls 213, the steel balls 213 being located between the wheel end outer ball cage 211 and the wheel end inner ball cage 212. Thereby, torque from the differential is transmitted to the wheels through the differential end universal joint 23, the intermediate shaft 22, the wheel end inner ball cage 212, the steel balls 213, the wheel end outer ball cage 211 and the hub bearing 1, and the arrangement of the steel balls 213 ensures the reliability of the transmission 100 in transmitting torque.
Further, the end of the wheel end outer cage 211 facing the wheel end inner cage 212 has a first receiving groove, the end of the wheel end inner cage 212 facing the wheel end outer cage 211 has a second receiving groove, and the steel ball 213 moves between the first receiving groove and the second receiving groove. Thereby, the steel balls 213 are moved between the first accommodation groove and the second accommodation groove to transmit the torque received by the wheel end outer cage 211 to the wheel end outer cage 211, thereby achieving torque transmission of the transmission 100.
Further, the wheel end universal joint 21 further includes a retainer 214, the retainer 214 being located in the first rotating groove, the retainer 214 being configured to support the steel ball 213, thereby ensuring a moving path of the steel ball 213 between the first receiving groove and the second receiving groove, and improving reliability of the transmission 100.
In some embodiments of the present utility model, as shown in fig. 2, 3 and 6, the axle assembly 2 further includes a differential end universal joint 23, the other end of the intermediate shaft 22 being connected to the differential end universal joint 23, the end of the differential end universal joint 23 remote from the intermediate shaft 22 being connected to the differential. Thereby, torque from the differential is transmitted to the wheels via the differential end universal joint 23, the intermediate shaft 22, the wheel end universal joint 21, and the hub bearing 1, and torque transmission by the transmission 100 is achieved.
In some embodiments of the present utility model, as shown in fig. 2, 3 and 6, the differential end universal joint 23 includes a differential end outer ball cage 231 and a differential end inner ball cage 232. Wherein, the end of differential end outer ball cage 231 that is kept away from jackshaft 22 is connected with the differential mechanism, and differential end outer ball cage 231 has second assembly groove 2311, and the at least part of differential end inner ball cage 232 is located in second assembly groove 2311 and welded connection with the other end of jackshaft 22.
Thus, the differential end universal joint 23 is connected with the differential mechanism through the connection of the end, away from the intermediate shaft 22, of the differential end outer ball cage 231, and torque from the differential mechanism is transmitted to the differential end universal joint 23. Meanwhile, the connection between the universal joint of the differential end and the intermediate shaft 22 is realized through the welded connection between the inner ball cage 232 of the differential end and the other end of the intermediate shaft 22, and the second assembly groove 2311 is extended from one end connected with the intermediate shaft 22 through the arrangement that at least part of the inner ball cage 232 of the differential end is positioned in the second assembly groove 2311, so that the reliability of the connection between the inner ball cage 232 of the differential end and the intermediate shaft 22 is improved, and the welding difficulty is reduced. In addition, the connection mode between the inner ball cage 232 at the differential end and the intermediate shaft 22 adopts welding connection, so that the connection reliability of the inner ball cage and the intermediate shaft is further ensured, and the reliability of the transmission torque process of the transmission device 100 is improved.
Further, the inner ball cage 232 includes a second assembling portion 2321 and a second connecting portion 2322, the second assembling portion 2321 is located in the second assembling groove 2311, the second connecting portion 2322 extends out of the second assembling groove 2311, and one end of the second connecting portion 2322 away from the second assembling portion 2321 is welded to the intermediate shaft 22. Thus, the differential end inner ball cage 232 is connected to the intermediate shaft 22 by this arrangement.
Further, the differential end universal joint 23 further includes a rolling bearing 233, and the rolling bearing 233 is located between the differential end outer cage 231 and the differential end inner cage 232. Thereby, torque from the differential is transmitted to the wheels through the differential outer ball cage, the rolling bearing 233, the differential end inner ball cage 232, the intermediate shaft 22, the wheel end inner ball cage 212, the steel balls 213, the wheel end outer ball cage 211 and the hub bearing 1, and the arrangement of the steel balls 213 ensures the reliability of the transmission device 100 in transmitting torque.
1-6, it is to be understood that the following description is merely exemplary and is not to be construed as limiting the utility model.
The transmission 100 includes a hub bearing 1 and a half shaft assembly 2, wherein a mounting groove 11 is provided at one side in an axial direction of the hub bearing 1, the half shaft assembly 2 includes a middle shaft 22, a wheel end universal joint 21 and a differential end universal joint 23, the wheel end universal joint 21 includes a wheel end outer ball cage 211 and a wheel end inner ball cage 212, at least part of the wheel end outer ball cage 211 is located in the mounting groove 11, an outer peripheral wall of the wheel end outer ball cage 211 is spline-fitted with an inner peripheral wall of the mounting groove 11, the wheel end inner ball cage 212 is connected with one end of the middle shaft 22, the other end of the middle shaft 22 is connected with the differential end universal joint 23, and one end of the differential end universal joint 23 away from the middle shaft 22 is connected with a differential. From this, the moment of torsion from differential mechanism passes through differential end universal joint 23, jackshaft 22, wheel end universal joint 21, wheel hub bearing 1 to the wheel, realizes the connection of two through the direct and inner peripheral wall spline fit of mounting groove 11 of the outer peripheral wall of wheel end universal joint 21 to effectively improve the rigidity of wheel end universal joint 21 and wheel hub bearing 1 junction, improve transmission 100's overall reliability, and reduce the friction abnormal sound of both junctions, improve user's use impression.
The opposite inner wall surface of the mounting groove 11 is provided with an inner spline 12, the outer peripheral wall of the wheel end outer ball cage 211 is provided with a limiting portion 2112 and an outer spline 2111 matched with the inner spline 12, the limiting portion 2112 is positioned on one side of the outer spline 2111 away from the bottom wall of the mounting groove 11, and the limiting portion 2112 is matched with the hub bearing 1 to limit the movement of the hub bearing 1 towards the direction of the intermediate shaft 22. Thereby, the connection of the outer peripheral wall of the wheel-end outer cage 211 with the inner peripheral wall of the mounting groove 11 is achieved by the cooperation of the female spline 12 and the male spline 2111. Meanwhile, the limiting portion 2112 limits the hub bearing 1 from moving toward the intermediate shaft 22 during torque transmission of the transmission 100, thereby improving reliability of the transmission 100. In addition, the arrangement of the mounting groove 11 having the inner spline 12 on the inner wall surface opposite to the mounting groove and the outer spline 2111 on the outer peripheral wall of the wheel end outer cage 211 further reduces the overall weight of the transmission 100, and satisfies the weight reduction requirement of the vehicle.
The bottom wall of the mounting groove 11 is provided with a first mounting hole 13, the end face of the outer ball cage 211 at the wheel end opposite to the bottom wall of the mounting groove 11 is provided with a second mounting hole 215 matched with the first mounting hole 13, and the fastener 3 sequentially penetrates through the first mounting hole 13 and the second mounting hole 215. The side of the fastener 3, which is far away from the wheel end universal joint 21, is provided with a sealing part 31, the sealing part 31 is positioned on the side of the hub bearing 1, which is far away from the mounting groove 11, and is stopped against the hub bearing 1, and the diameter of the sealing part 31 is larger than the aperture of the first mounting hole 13. From this, wear to establish first mounting hole 13 and second mounting hole 215 in proper order through fastener 3 and realize the connection of hub bearing 1 and wheel end universal joint 21, and sealing 31 cooperates with hub bearing 1 and restrict hub bearing 1 and move towards the direction that deviates from jackshaft 22 at transmission 100 transmission torque's in-process to avoid hub bearing 1 and wheel end universal joint 21 to take place to drop at transmission 100 transmission torque's in-process, improve transmission 100's reliability. At the same time, the sealing 31 cooperates with the hub bearing 1 to limit the movement of the hub bearing 1 in a direction away from the intermediate shaft 22 during torque transmission of the transmission 100.
The second mounting hole 215 includes a first hole 2151 and a second hole 2152 that are arranged in order along the direction in which the fastener 3 is threaded, the first hole 2151 is located at one end of the second hole 2152 near the first mounting hole 13, the inner wall of the first hole 2151 is in interference fit with the fastener 3, the inner wall of the second hole 2152 has an internal thread, and the fastener 3 has an external thread that is in interference fit with the internal thread. Therefore, the connection between the fastener 3 and the wheel end universal joint 21 is realized through the threaded fit between the inner wall of the second hole 2152 and the fastener 3, and the sealing of the first hole 2151 is realized through the interference fit between the inner wall of the first hole 2151 and the fastener 3, so that the liquid in the mounting groove 11 is prevented from flowing in from the first hole 2151, and the reliability of the transmission device 100 is improved.
The wheel end outer cage 211 has a first fitting groove 2113, the wheel end inner cage 212 includes a first fitting portion 2121 and a first connecting portion 2122, the first fitting portion 2121 is located in the first fitting groove 2113, the first connecting portion 2122 extends out of the first fitting groove 2113, and an end of the first connecting portion 2122 remote from the first fitting portion 2121 is welded to the intermediate shaft 22. The first connecting portion 2122 extending out of the first fitting groove 2113 is connected to the intermediate shaft 22, so that the reliability of connection between the first and second connecting portions is improved, and the welding difficulty is reduced. In addition, the connection mode between the inner ball cage 212 at the wheel end and the intermediate shaft 22 adopts welding connection, so that the connection reliability of the inner ball cage and the intermediate shaft is further ensured, and the reliability of the transmission torque process of the transmission device 100 is improved.
The wheel end universal joint 21 further includes a steel ball 213 and a retainer 214, the end of the wheel end outer ball cage 211 facing the wheel end inner ball cage 212 has a first accommodation groove, the end of the wheel end inner ball cage 212 facing the wheel end outer ball cage 211 has a second accommodation groove, the steel ball 213 moves between the first accommodation groove and the second accommodation groove, the retainer 214 is located in the first rotation groove, and the retainer 214 is used for supporting the steel ball 213. Thereby, the steel balls 213 are moved between the first accommodation groove and the second accommodation groove to transmit the torque received by the wheel end outer cage 211 to the wheel end outer cage 211, thereby achieving torque transmission of the transmission 100.
The differential end universal joint 23 includes a rolling bearing 233, a differential end outer ball cage 231, and a differential end inner ball cage 232. Wherein, the one end that jackshaft 22 was kept away from to differential end outer ball cage 231 is connected with differential mechanism, differential end outer ball cage 231 has second assembly groove 2311, differential end inner ball cage 232 includes second assembly portion 2321 and second connecting portion 2322, second assembly portion 2321 is located second assembly groove 2311, second connecting portion 2322 stretches out second assembly groove 2311, and the one end that second connecting portion 2322 kept away from second assembly portion 2321 and jackshaft 22 welded connection, antifriction bearing 233 is located between differential end outer ball cage 231 and differential end inner ball cage 232. Thereby, torque from the differential is transmitted to the wheels through the differential outer ball cage, the rolling bearing 233, the differential end inner ball cage 232, the intermediate shaft 22, the wheel end inner ball cage 212, the steel balls 213, the wheel end outer ball cage 211 and the hub bearing 1, and the arrangement of the steel balls 213 ensures the reliability of the transmission device 100 in transmitting torque. Meanwhile, the second connection portion 2322 extending out of the second assembly groove 2311 is connected with the intermediate shaft 22, so that the reliability of connection of the second connection portion 2322 and the intermediate shaft is improved, and the welding difficulty is reduced. In addition, the connection mode between the inner ball cage 232 at the differential end and the intermediate shaft 22 adopts welding connection, so that the connection reliability of the inner ball cage and the intermediate shaft is further ensured, and the reliability of the transmission torque process of the transmission device 100 is improved.
A vehicle of an embodiment of the utility model is described below.
A vehicle according to an embodiment of the utility model includes a transmission 100.
According to the vehicle provided by the embodiment of the utility model, the transmission device 100 is arranged, the mounting groove 11 is formed in one axial side of the hub bearing 1, the half shaft assembly 2 comprises the intermediate shaft 22 and the wheel end universal joint 21, the wheel end universal joint 21 is connected with one end of the intermediate shaft 22, at least part of the wheel end universal joint 21 is positioned in the mounting groove 11, the peripheral wall of the wheel end universal joint 21 is in spline fit with the inner peripheral wall of the mounting groove 11, the rigidity of the joint of the wheel end universal joint 21 and the hub bearing 1 is effectively improved, the overall reliability of the transmission device 100 is improved, the friction abnormal sound of the joint of the wheel end universal joint 21 and the wheel end universal joint is reduced, and the use feeling of a user is improved.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A transmission, comprising:
a hub bearing, wherein a mounting groove is formed in one axial side of the hub bearing;
the axle shaft assembly comprises a wheel end universal joint and an intermediate shaft, wherein the wheel end universal joint is connected with one end of the intermediate shaft, at least part of the wheel end universal joint is positioned in the mounting groove, and the peripheral wall of the wheel end universal joint is in spline fit with the inner peripheral wall of the mounting groove.
2. The transmission of claim 1, wherein the opposite inner wall surfaces of the mounting groove have internal splines, the outer peripheral wall of the wheel end universal joint has a limiting portion and external splines engaged with the internal splines, the limiting portion is located on a side of the external splines away from the bottom wall of the mounting groove, and the limiting portion engages with the hub bearing for limiting movement of the hub bearing in a direction toward the intermediate shaft.
3. A transmission according to claim 2, wherein the limit portion is formed as a projection provided on an outer peripheral wall of the wheel end universal joint, and a side of the projection facing away from the intermediate shaft is stopped against the hub bearing.
4. The transmission of claim 1, wherein the bottom wall of the mounting groove has a first mounting hole, the end face of the wheel end universal joint opposite the bottom wall of the mounting groove has a second mounting hole mated with the first mounting hole, and the fastener sequentially passes through the first and second mounting holes.
5. The transmission of claim 4, wherein a side of the fastener remote from the wheel end universal joint has a seal portion on a side of the hub bearing facing away from the mounting groove and abutting the hub bearing, the seal portion having a diameter greater than a bore diameter of the first mounting hole.
6. The transmission of claim 4, wherein the second mounting hole comprises a first hole and a second hole sequentially arranged along the penetrating direction of the fastener, the first hole is positioned at one end of the second hole near the first mounting hole, the inner wall of the first hole is in interference fit with the fastener, the inner wall of the second hole is provided with an internal thread, and the fastener is provided with an external thread matched with the internal thread.
7. The transmission of claim 1, wherein the wheel end universal joint comprises:
the outer circumferential wall of the wheel end outer ball cage is in spline fit with the inner circumferential wall of the mounting groove, and the wheel end outer ball cage is provided with a first assembly groove;
the inner ball cage at the wheel end is at least partially positioned in the first assembly groove and is welded with one end of the intermediate shaft.
8. The transmission of claim 1, wherein the axle assembly further comprises:
the other end of the intermediate shaft is connected with the differential end universal joint, and one end of the differential end universal joint, which is far away from the intermediate shaft, is connected with the differential mechanism.
9. The transmission of claim 8, wherein the differential end universal joint comprises:
the differential end outer ball cage is connected with the differential mechanism at one end, far away from the intermediate shaft, of the differential end outer ball cage, and the differential end outer ball cage is provided with a second assembly groove;
and at least part of the inner ball cage at the differential end is positioned in the second assembly groove and is welded with the other end of the intermediate shaft.
10. A vehicle comprising a transmission according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320511276.0U CN219564654U (en) | 2023-03-15 | 2023-03-15 | Transmission device and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320511276.0U CN219564654U (en) | 2023-03-15 | 2023-03-15 | Transmission device and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219564654U true CN219564654U (en) | 2023-08-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320511276.0U Active CN219564654U (en) | 2023-03-15 | 2023-03-15 | Transmission device and vehicle |
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| Country | Link |
|---|---|
| CN (1) | CN219564654U (en) |
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2023
- 2023-03-15 CN CN202320511276.0U patent/CN219564654U/en active Active
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