CN115325129B - Differential structure and vehicle - Google Patents
Differential structure and vehicle Download PDFInfo
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- CN115325129B CN115325129B CN202210774728.4A CN202210774728A CN115325129B CN 115325129 B CN115325129 B CN 115325129B CN 202210774728 A CN202210774728 A CN 202210774728A CN 115325129 B CN115325129 B CN 115325129B
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- 230000005540 biological transmission Effects 0.000 claims abstract description 93
- 230000008878 coupling Effects 0.000 claims description 39
- 238000010168 coupling process Methods 0.000 claims description 39
- 238000005859 coupling reaction Methods 0.000 claims description 39
- 230000007246 mechanism Effects 0.000 description 11
- 230000001360 synchronised effect Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 238000004134 energy conservation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/06—Differential gearings with gears having orbital motion
- F16H48/08—Differential gearings with gears having orbital motion comprising bevel gears
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/20—Arrangements for suppressing or influencing the differential action, e.g. locking devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/20—Arrangements for suppressing or influencing the differential action, e.g. locking devices
- F16H48/30—Arrangements for suppressing or influencing the differential action, e.g. locking devices using externally-actuatable means
- F16H48/34—Arrangements for suppressing or influencing the differential action, e.g. locking devices using externally-actuatable means using electromagnetic or electric actuators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/38—Constructional details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/20—Arrangements for suppressing or influencing the differential action, e.g. locking devices
- F16H48/30—Arrangements for suppressing or influencing the differential action, e.g. locking devices using externally-actuatable means
- F16H48/34—Arrangements for suppressing or influencing the differential action, e.g. locking devices using externally-actuatable means using electromagnetic or electric actuators
- F16H2048/343—Arrangements for suppressing or influencing the differential action, e.g. locking devices using externally-actuatable means using electromagnetic or electric actuators using a rotary motor
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Retarders (AREA)
Abstract
A differential structure and a vehicle are disclosed herein. The differential structure comprises a first rotating body, a second rotating body, an intermediate transmission body and an active combination body, and the first rotating body, the second rotating body and the intermediate transmission body form the differential structure; the active combination body is sleeved outside the second rotating body and can axially move relative to the second rotating body; the driving combination body is provided with a first combination tooth and a second combination tooth, the intermediate transmission body is provided with a third combination tooth, and the second rotating body is provided with a fourth combination tooth; after the active combination body moves towards the intermediate transmission body for a first set distance, the first combination tooth is meshed with the third combination tooth, and the active combination body drives the intermediate transmission body to rotate; after the driving combination body moves towards the middle transmission body for a second set distance, the second combination tooth is meshed with the fourth combination tooth, so that the first rotating body, the second rotating body and the driving combination body rotate at the same rotating speed; the second set distance is greater than the first set distance.
Description
Technical Field
The present application relates to the field of differentials, and more particularly to a differential structure and a vehicle.
Background
In the electric drive three-in-one product of the four-wheel drive automobile, if the permanent magnet synchronous motor is driven to rotate instead of actively rotating, a certain resistance moment can be generated, so that energy loss is caused, and the continuous voyage of the new energy automobile is not facilitated. Therefore, a set of disengaging mechanism is needed to be arranged in the current electric drive product using the permanent magnet synchronous motor as a power source, and the driving motor (namely the permanent magnet synchronous motor) is disengaged from the wheel when the driving motor does not work, so that the wheel is prevented from driving the driving motor to idle, and unnecessary power consumption and energy loss are reduced.
In addition, some vehicles (such as off-road vehicles and the like) are provided with differential locks so as to improve the off-road performance and the escaping performance of the vehicles, but after the differential lock structure and the escaping mechanism are arranged at the same time, the number of parts in the vehicles is greatly increased, the complexity of the structure is improved, and the working reliability of the vehicles is reduced.
Disclosure of Invention
The embodiment of the application provides a differential structure and vehicle, and the differential structure integrates the disengaging mechanism and the differential lock structure, so that the structure is simplified, and the working reliability is improved.
The embodiment of the application provides a differential structure, which comprises a first rotating body, a second rotating body, an intermediate transmission body and an active combination body, wherein the intermediate transmission body is arranged between the first rotating body and the second rotating body and is respectively in transmission engagement with the first rotating body and the second rotating body, and the first rotating body, the second rotating body and the intermediate transmission body form a differential structure so that the first rotating body and the second rotating body can rotate at different speeds;
the active combination body is sleeved outside the second rotating body and can axially move relative to the second rotating body; the driving combination body is provided with a first combination tooth and a second combination tooth, the intermediate transmission body is provided with a third combination tooth, and the second rotating body is provided with a fourth combination tooth;
after the driving combination body moves towards the intermediate transmission body for a first set distance, the first combination tooth is meshed with the third combination tooth, and the driving combination body drives the intermediate transmission body to rotate; after the driving combination body moves towards the middle transmission body for a second set distance, the second combination tooth is meshed with the fourth combination tooth, so that the first rotating body, the second rotating body and the driving combination body rotate at the same rotating speed;
the second set distance is greater than the first set distance.
Further, the differential structure further comprises a power device and a transmission device, wherein the transmission device is arranged on one side of the active combination body, which is away from the middle transmission body, and the power device is arranged to push the active combination body to axially move through the transmission device.
Further, the differential structure further includes a reset device mounted on the second rotating body or the intermediate transmission body and configured to push the active combination body to move in a direction away from the second rotating body.
Further, the resetting device comprises an elastic piece, one end of the elastic piece is arranged on the axial end face of the second rotating body, and the other end of the elastic piece abuts against the active combination body.
Further, the end face of the second rotating body facing the active combination body is provided with the fourth combination tooth;
the fourth coupling tooth is located radially outside the elastic member.
Further, the first bonding teeth and the second bonding teeth are radially arranged on an end face of the active bond, and the first bonding teeth are located radially outward of the second bonding teeth.
Further, the first bonding teeth protrude from the second bonding teeth along the axial direction of the active bond.
Further, the intermediate transmission body comprises a gear shaft and a bevel gear sleeved on the gear shaft, and the bevel gear is respectively in transmission engagement with the first rotating body and the second rotating body;
the gear shaft is also provided with a support combination body, and the third combination tooth is arranged on the support combination body.
Further, the transmission device comprises a screw assembly and a shifting fork, and the power device drives the shifting fork to axially move along the second rotating body through the screw assembly, so that the shifting fork pushes the active combination body to axially move.
Further, the differential structure further comprises a housing, the first rotating body, the second rotating body, the intermediate transmission body and the active combination body are all located inside the housing, and one end of the active combination body, which deviates from the intermediate transmission body, extends out of the housing so as to be in butt joint with the transmission device.
The embodiment of the application also provides a vehicle, which comprises a driving device, wheels and the differential structure, wherein the driving device drives the active combination body to rotate so as to provide vehicle power, and the first rotating body and the second rotating body are respectively connected with the wheels on two sides.
Compared with some technologies, the application has the following beneficial effects:
according to the differential structure provided by the embodiment of the application, the active combination body is combined with the intermediate transmission body and can realize the disengaging function, when the driving motor does not rotate, the driving motor and the wheels can be disengaged, idle running electricity consumption of the driving motor is avoided, and energy is saved. The active combination body is combined with the second rotating body, so that the differential lock function can be realized, and wheels on two sides synchronously rotate, so that the off-road performance and the escaping performance of the vehicle are improved. The differential structure has the function of disengaging and the function of differential lock simultaneously, and the two mechanisms are integrated and arranged in the same differential structure, so that the integration level is high, two sets of systems are not required to be arranged to realize the function of disengaging and the function of differential lock respectively, the number of parts is greatly reduced, and the internal structure of the vehicle is simplified.
The vehicle provided by the embodiment of the application has the differential structure, and is good in vehicle energy conservation, low in oil consumption, good in cross-country performance and escaping performance, high in working reliability, long in service life and good in user experience.
Additional features and advantages of the application will be set forth in the description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of the technical aspects of the present application, and are incorporated in and constitute a part of this specification, illustrate the technical aspects of the present application and together with the examples of the present application, and not constitute a limitation of the technical aspects of the present application.
Fig. 1 is a schematic structural view of a differential structure according to an embodiment of the present application (disengaged state);
fig. 2 is a schematic structural diagram of a differential structure according to an embodiment of the present disclosure (a normal operating state of the differential);
fig. 3 is a schematic structural view of a differential structure according to an embodiment of the present application (differential lock state).
Illustration of:
1-first rotator, 2-second rotator, 21-fourth combination tooth, 3-intermediate transmission body, 31-gear shaft, 32-bevel gear, 33-third combination tooth, 34-support combination body, 35-locating pin, 4-initiative combination body, 41-first combination tooth, 42-second combination tooth, 51-power device, 52-transmission device, 521-lead screw assembly, 522-shift fork, 523-switching block, 524-intermediate body, 525-signal disc, 526-sliding shaft, 53-reset device, 54-half shaft, 6-shell, 61-shell, 62-cover plate.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the present application more apparent, embodiments of the present application will be described in detail hereinafter with reference to the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be arbitrarily combined with each other.
The embodiment of the application provides a differential structure, as shown in fig. 1 to 3, the differential structure comprises a first rotating body 1, a second rotating body 2, an intermediate transmission body 3 and a driving combination body 4, wherein the intermediate transmission body 3 is arranged between the first rotating body 1 and the second rotating body 2 and is respectively in transmission engagement with the first rotating body 1 and the second rotating body 2, and the first rotating body 1, the second rotating body 2 and the intermediate transmission body 3 form a differential structure, so that the first rotating body 1 and the second rotating body 2 can rotate at different speeds; the active combination body 4 is sleeved outside the second rotating body 2 and can axially move relative to the second rotating body 2; the driving combination body 4 is provided with a first combination tooth 41 and a second combination tooth 42, the intermediate transmission body 3 is provided with a third combination tooth 33, and the second rotating body 2 is provided with a fourth combination tooth 21; after the active combination body 4 moves towards the intermediate transmission body 3 for a first set distance, the first combination tooth 41 is meshed with the third combination tooth 33, and the active combination body 4 drives the intermediate transmission body 3 to rotate; after the driving combination body 4 moves towards the middle transmission body 3 for a second set distance, the second combination teeth 42 are meshed with the fourth combination teeth 21, so that the first rotating body 1, the second rotating body 2 and the driving combination body 4 rotate at the same rotating speed; the second set distance is greater than the first set distance.
The active combination body 4 is only sleeved outside the second rotating body 2 in position, and the active combination body 4 does not directly drive the second rotating body 2 to rotate due to the sleeved position relation.
The first rotating body 1 and the second rotating body 2 can be respectively connected with vehicles on two sides of the vehicles, and the first rotating body 1, the second rotating body 2 and the intermediate transmission body 3 form a differential mechanism structure so that wheels on two sides on the left side can rotate at different speeds.
When the driving motor normally rotates the wheels, the driving combination body 4 is combined with the intermediate transmission body 3, that is, the first combination tooth 41 is meshed with the third combination tooth 33, so that the torque output by the driving motor (that is, the driving device) for generating the forward power of the vehicle is transmitted to the wheels. When the driving motor does not provide power, i.e. the driving motor does not drive the wheel to rotate any more, the active combination body 4 is separated from the intermediate transmission body 3, i.e. the first combination tooth 41 is separated from the third combination tooth 33, so that the rotation of the wheel is not transmitted to the driving motor through the active combination body 4 after being transmitted to the intermediate transmission body 3.
For the differential lock function, after the active combination body 4 is combined with the second rotation body 2, namely, the second combination tooth 42 is meshed with the fourth combination tooth 21, at this time, the second rotation body 2 is synchronous with the rotation speed of the active combination body 4, and the active combination body 4 also directly drives the intermediate transmission body 3 to rotate, so that the rotation speed of the first rotation body 1 is synchronous with the rotation speed of the active combination body 4, and further, the synchronous rotation (same rotation speed rotation) of the first rotation body 1 and the second rotation body 2 is achieved, the differential lock function is realized, the escape of the situation that the wheels sink into mud is facilitated, and the cross-country performance of the vehicle is also improved.
In the differential, since there is revolution of the gear shaft 31 and rotation of the bevel gear 32, the first rotating body 1 and the second rotating body 2 can be rotated at different rotation speeds, and when the second coupling teeth 42 are engaged with the fourth coupling teeth 21, rotation of the bevel gear 32 is restricted, so that the first rotating body 1 and the second rotating body 2 cannot be rotated at different rotation speeds, that is, a differential lock function is realized. The differential is converted from a disengaged state (i.e. the active combination 4 and the intermediate transmission body 3 are in a separated state) into a normal working state of the differential: after the active combination body 4 moves towards the intermediate transmission body 3 for a first set distance, the active combination body 4 is combined with the intermediate transmission body 3; the differential is converted from a disengaged state (i.e. the active coupling 4 is in a disengaged state with the intermediate transmission 3) into a differential lock state: after the active combined body 4 moves towards the intermediate transmission body 3 for a second set distance, the active combined body 4 is combined with the second rotating body 2, and the second set distance is larger than the first set distance, in other words, in the moving process of the active combined body 4 towards the intermediate transmission body 3, the active combined body 4 is combined with the intermediate transmission body 3 to drive a driving motor to drive wheels to rotate, then the active combined body 4 continues to move towards the intermediate transmission body 3, and then the active combined body 4 is combined with the second rotating body 2 to realize a differential lock function, namely, the differential mechanism is converted into a normal working state from a disengaging state and then into a differential lock state.
The first, second and fourth bonding teeth 41, 42 and 21 may be ring-shaped teeth in the circumferential direction.
In an exemplary embodiment, as shown in fig. 1 to 3, the differential structure further comprises a power device 51 and a transmission device 52, the transmission device 52 being arranged on a side of the active coupling body 4 facing away from the intermediate transmission body 3, the power device 51 being arranged to push the active coupling body 4 axially through the transmission device 52.
The power device 51 pushes the active combination body 4 to move axially through the transmission device 52, so that the active combination body 4 is combined with the intermediate transmission body 3, or the active combination body 4 is combined with the second rotating body 2.
The power device 51 may be a power source such as a motor, and the transmission device 52 converts rotation of the motor into axial thrust so as to push the active combination 4 to move axially. The transmission device 52 has a self-locking function, and when the active coupling body 4 moves axially to a certain position, the power device 51 can keep the active coupling body 4 stationary in the position.
In an exemplary embodiment, as shown in fig. 1 to 3, the differential structure further comprises a reset device 53, wherein the reset device 53 is mounted on the second rotating body 2 or the intermediate transmission body 3 and is configured to push the active combination 4 to move in a direction away from the second rotating body 2.
When the active combination body 4 is combined with the intermediate transmission body 3, the driving motor drives the wheels to rotate through the differential structure; when the driving motor no longer provides power, in order to avoid the idle running of the driving motor driven by the wheels, the active combination body 4 needs to be separated from the intermediate transmission body 3, at this time, the power device 51 does not provide power after rotating reversely, and the reset device 53 props against the active combination body 4, so that the active combination body 4 moves axially in a direction away from the second rotating body 2, and the active combination body 4 is further separated from the intermediate transmission body 3.
When the active combination body 4 and the second rotating body 2 are combined and then need to be separated, the reset device 53 also pushes the active combination body 4 to axially move towards the direction away from the second rotating body 2, so that the active combination body 4 and the second rotating body 2 are separated.
It should be understood that when the transmission 52 is merely abutting against the active combination 4, the reset device 53 may be correspondingly provided so as to push the active combination 4 to reset. When the transmission device 52 and the active combination body 4 are rigidly connected (such as welding), the reset device 53 is not arranged, and the power device 51 directly drives the active combination body 4 to move bidirectionally through the transmission device 52.
In an exemplary embodiment, as shown in fig. 1 to 3, the reset device 53 includes an elastic member, one end of which is mounted on an axial end surface of the second rotating body 2, and the other end of which abuts against the active coupling body 4.
The elastic member may be a spring sleeved on the second rotating body 2, one end of the spring is fixedly installed on the axial end face of the second rotating body 2, the other end of the spring abuts against the active combination body 4, and the spring is compressed to provide thrust required by the reset of the active combination body 4.
In an exemplary embodiment, as shown in fig. 1 to 3, a fourth coupling tooth 21 is provided on the end surface of the second rotating body 2 facing the active coupling body 4; the fourth coupling tooth 21 is located radially outside the elastic member.
The end surface of the second rotating body 2 facing the active coupling body 4 is provided with fourth coupling teeth 21 so that the second coupling teeth 42 mesh with the fourth coupling teeth 21 when the active coupling body 4 moves toward the intermediate transmission body 3. The elastic piece is located on the inner side of the fourth combining tooth 21 in the radial direction, namely, the radial dimension of the elastic piece is smaller than the radial dimension of the fourth combining tooth 21, so that when the spring is sleeved on the outer side of the second rotating body 2, the radial clearance between the spring and the second rotating body 2 is smaller, the second rotating body 2 better plays a role in guiding and supporting the spring, and deflection of the spring is avoided.
In an exemplary embodiment, as shown in fig. 1 to 3, the first bonding teeth 41 and the second bonding teeth 42 are radially arranged on the end surface of the active bond 4, and the first bonding teeth 41 are located radially outside the second bonding teeth 42.
The first bonding tooth 41 is located outside the second bonding tooth 42 in the radial direction of the active bond 4 so as to correspond to the third bonding tooth 33 and the fourth bonding tooth 21, respectively.
In an exemplary embodiment, as shown in fig. 1 to 3, the first coupling teeth 41 protrude from the second coupling teeth 42 in the axial direction of the active coupling body 4.
The first engaging tooth 41 protrudes from the second engaging tooth 42 so that the first engaging tooth 41 is engaged with the third engaging tooth 33 before the second engaging tooth 42 is engaged with the fourth engaging tooth 21 after the first engaging tooth is engaged with the fourth engaging tooth 21, thereby realizing the disengaging/engaging function of the differential structure before the differential lock function.
In an exemplary embodiment, as shown in fig. 1 to 3, the intermediate transmission body 3 includes a gear shaft 31 and a bevel gear 32 sleeved on the gear shaft 31, and the bevel gear 32 is in driving engagement with the first rotating body 1 and the second rotating body 2, respectively; the gear shaft 31 is further provided with a support coupling body 34, and the third coupling teeth 33 are provided on the support coupling body 34.
The intermediate transmission body 3 may include a gear shaft 31 and bevel gears 32 sleeved on the gear shaft 31, and the number of the bevel gears 32 may be two to improve the meshing stability of the bevel gears 32 with the first and second rotating bodies 1, 2.
The gear shaft 31 is further provided with a support coupling body 34 located at the outer side of the bevel gear 32, and the support coupling body 34 is provided with a third coupling tooth 33 so that the driving coupling body 4 is engaged.
The support coupling body 34 may be mounted on the gear shaft 31 by means of a positioning pin 35.
In an exemplary embodiment, as shown in fig. 1 to 3, the transmission device 52 includes a screw assembly 521 and a shift fork 522, and the power device 51 drives the shift fork 522 to axially move along the second rotating body 2 through the screw assembly 521, so that the shift fork 522 pushes the active combination 4 to axially move.
The screw assembly 521 is used for converting the torque of the power device 51 into an axial thrust to push the shift fork 522 to move axially, and further push the active combination 4 to move axially.
A sliding shaft 526 can be independently arranged in the differential structure, the shifting fork 522 is sleeved on the sliding shaft 526, the sliding shaft 526 can play a role in guiding, and the axial movement precision of the shifting fork 522 is improved.
In addition, the transmission device 52 may further include a switching block 523, an intermediate body 524, a signal panel 525, and other components, which are all disposed between the shifting fork 522 and the active combination 4, wherein the signal panel 525 and the active combination 4 are clamped together by a claw. The first rotating body 1 and the second rotating body 2 are connected with wheels through half shafts, and a switching block 523, an intermediate body 524 and a signal panel 525 are sequentially sleeved on the half shaft 54 between the second rotating body 2 and the vehicle.
In practical application, the differential structure provided in the embodiment of the present application has three states, namely: the differential mechanism is in a normal working state, a disengaging state and a differential lock state.
In the normal operating state of the differential, the active coupling body 4 is coupled with the intermediate transmission body 3. In the disengaged state, the active coupling body 4 is disengaged from the intermediate transmission body 3. In the differential lock state, the active coupling body 4 is coupled to the second rotating body 2 (at this time, the active coupling body 4 and the intermediate transmitting body 3 are also in the coupled state).
When the differential structure is converted from the "disengaged state" to the "normal operating state of the differential", i.e. from fig. 1 to fig. 2, the shifting action acts as: the motor rotates to drive the screw assembly 521 to rotate, the shifting fork 522 is driven to axially move, the shifting fork 522 drives the switching block 523, the intermediate body 524, the signal panel 525 and the active combination body 4 to axially move, the motor stops rotating after a certain stroke (namely a first set distance) moves, the screw assembly 521 is self-locked to keep the position, the active combination body 4 is combined with the support combination body 34, and gear shifting is completed.
When the differential structure is converted from the "normal operating state of the differential" to the "disengaged state", i.e. from fig. 2 to fig. 1, the shifting action acts as: the motor rotates reversely to drive the screw assembly 521 to rotate to drive the shifting fork 522 to axially move, the shifting fork 522 drives the switching block 523, the intermediate body 524, the signal panel 525 and the active combination body 4 to axially move, the motor stops rotating after a certain stroke (namely a first set distance) moves, the screw assembly 521 keeps the position in a self-locking way, and the spring pushes the active combination body 4 to be separated from the support combination body 34, so that gear shifting is completed.
When the differential structure is converted from the "normal operating state of the differential mechanism" to the "differential lock state", that is, from fig. 2 to fig. 3, the shifting action acts as: the motor rotates to drive the screw assembly 521 to rotate, the shifting fork 522 is driven to axially move, the shifting fork 522 drives the switching block 523, the intermediate body 524, the signal panel 525 and the active combination body 4 to axially move, the motor stops rotating after a certain stroke (namely, the difference value of the second set distance minus the first set distance) moves, the screw assembly 521 is self-locked to keep the position, the active combination body 4 is combined with the supporting combination body 34 and the rotating body, and gear shifting is completed.
When the differential structure is converted from the "differential lock state" to the "differential normal operation state", that is, from fig. 3 to fig. 2, the shift action is as follows: the motor rotates to drive the screw assembly 521 to rotate, the shifting fork 522 is driven to axially move, the shifting fork 522 drives the switching block 523, the intermediate body 524, the signal panel 525 and the active combination body 4 to axially move, the motor stops rotating after a certain stroke (namely, the difference value of the second set distance minus the first set distance) moves, the screw assembly 521 is self-locked to keep the position, and the spring pushes the active combination body 4 to be separated from the rotating body, so that gear shifting is completed.
In an exemplary embodiment, as shown in fig. 1 to 3, the differential structure further includes a housing 6, the first rotating body 1, the second rotating body 2, the intermediate transmission body 3 and the active coupling body 4 are all located inside the housing 6, and an end of the active coupling body 4 facing away from the intermediate transmission body 3 protrudes from the housing 6 to be abutted with the transmission device 52.
One end of the active combination body 4 extends out of the shell 6 to be abutted with the transmission device 52, so that the active combination body 4 moves axially.
The housing 6 may include a case 61 and a cover plate 62, one end of the case 61 is opened, and the other end is provided with a mounting hole for extending one end of the active coupling body 4; the cover plate 62 is fastened to the opening of the housing 61.
After the shell 6 receives the torque transmitted by the driving motor, the shell 6 is driven to rotate, and the mounting hole of the shell 61 is meshed with the active combination body 4 (i.e. a clamping groove and the like can be arranged on the hole wall of the mounting hole), so that the shell 61 can drive the active combination body 4 to rotate. And the housing 61 can always drive the active combination 4 to rotate during the axial movement of the active combination 4.
The differential structure provided by the embodiment of the application can be applied to a coaxial planetary gear type electric drive system, can achieve the functions of disengaging and differential lock simultaneously, and the disengaging mechanism can share the same set of actuating mechanism (namely the same set of power device 51 and transmission device 52) with the differential lock, so that the cost can be effectively reduced, and the disengaging mechanism and the differential lock can be arranged in the same speed changer in a smaller space. The differential structure that this application embodiment provided is smaller, and the part is fewer, and the performance is better, and the cost is lower.
The embodiment of the application also provides a vehicle, which comprises a driving device, wheels and the differential structure, wherein the driving device drives the active combination body 4 to rotate so as to provide vehicle power, and the first rotating body 1 and the second rotating body 2 are respectively connected with the wheels on two sides.
The vehicle provided by the embodiment of the application has the differential structure, and is good in vehicle energy conservation, low in oil consumption, good in cross-country performance and escaping performance, high in working reliability, long in service life and good in user experience.
In the description of the present application, it should be noted that the directions or positional relationships indicated by "upper", "lower", "one end", "one side", etc. are based on the directions or positional relationships shown in the drawings, and are merely for convenience of description of the present application and simplification of the description, and are not indicative or implying that the structure referred to has a specific direction, is configured and operated in a specific direction, and therefore, should not be construed as limiting the present application.
In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "connected," "assembled," and "mounted" are to be construed broadly, and for example, the term "connected" may be a fixed connection, a removable connection, or an integral connection; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.
The embodiments described herein are intended to be illustrative and not limiting, and it will be apparent to those of ordinary skill in the art that many more embodiments and implementations are possible within the scope of the embodiments described herein. Although many possible combinations of features are shown in the drawings and discussed in the detailed description, many other combinations of the disclosed features are possible. Any feature or element of any embodiment may be used in combination with or in place of any other feature or element of any other embodiment unless specifically limited.
The present application includes and contemplates combinations of features and elements known to those of ordinary skill in the art. The embodiments, features and elements disclosed in this application may also be combined with any conventional features or elements to form a unique solution as defined by the claims. Any feature or element of any embodiment may also be combined with features or elements from other claims to form another unique claim as defined in the claims. Thus, it should be understood that any of the features shown and/or discussed in this application may be implemented alone or in any suitable combination. Accordingly, the embodiments are not to be restricted except in light of the attached claims and their equivalents. Further, various modifications and changes may be made within the scope of the appended claims.
Claims (9)
1. The differential structure is characterized by comprising a first rotating body, a second rotating body, an intermediate transmission body and an active combination body, wherein the intermediate transmission body is arranged between the first rotating body and the second rotating body and is respectively in transmission engagement with the first rotating body and the second rotating body, and the first rotating body, the second rotating body and the intermediate transmission body form the differential structure so that the first rotating body and the second rotating body can rotate at different speeds;
the active combination body is sleeved outside the second rotating body and can axially move relative to the second rotating body; the driving combination body is provided with a first combination tooth and a second combination tooth, the intermediate transmission body is provided with a third combination tooth, and the second rotating body is provided with a fourth combination tooth;
after the driving combination body moves towards the intermediate transmission body for a first set distance, the first combination tooth is meshed with the third combination tooth, and the driving combination body drives the intermediate transmission body to rotate; after the driving combination body moves towards the middle transmission body for a second set distance, the second combination tooth is meshed with the fourth combination tooth, so that the first rotating body, the second rotating body and the driving combination body rotate at the same rotating speed;
the second set distance is greater than the first set distance;
the first bonding teeth and the second bonding teeth are radially arranged on the end face of the active bonding body, and the first bonding teeth are positioned on the outer side of the second bonding teeth in the radial direction;
the first bonding teeth protrude from the second bonding teeth along the axial direction of the active bonding body.
2. The differential structure of claim 1, further comprising a power device and a transmission device, the transmission device being disposed on a side of the active combination facing away from the intermediate transmission body, the power device being configured to urge the active combination to move axially through the transmission device.
3. A differential structure according to claim 2, further comprising a reset device mounted on the second rotating body or the intermediate transmission body and arranged to urge the active combination to move in a direction away from the second rotating body.
4. A differential structure according to claim 3, wherein said return means comprises an elastic member having one end mounted on an axial end face of said second rotating body and the other end abutting against said active combination.
5. The differential structure according to claim 4, characterized in that the fourth engaging tooth is provided on an end surface of the second rotating body facing the active coupling body;
the fourth coupling tooth is located radially outside the elastic member.
6. The differential structure according to any one of claims 1 to 5, characterized in that the intermediate transmission body includes a gear shaft and a bevel gear fitted over the gear shaft, the bevel gears being in driving engagement with the first rotating body and the second rotating body, respectively;
the gear shaft is also provided with a support combination body, and the third combination tooth is arranged on the support combination body.
7. The differential structure according to claim 2, wherein the transmission device comprises a screw assembly and a shifting fork, and the power device drives the shifting fork to axially move along the second rotating body through the screw assembly, so that the shifting fork pushes the active combination body to axially move.
8. The differential structure of claim 2, further comprising a housing, wherein the first rotating body, the second rotating body, the intermediate transmission body, and the active coupling body are all located inside the housing, and an end of the active coupling body facing away from the intermediate transmission body protrudes from the housing to abut against the transmission device.
9. A vehicle comprising a driving device, wheels and a differential structure according to any one of claims 1 to 8, wherein the driving device drives the active combination to rotate to provide vehicle power, and the first rotating body and the second rotating body are respectively connected with the wheels on two sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210774728.4A CN115325129B (en) | 2022-07-01 | 2022-07-01 | Differential structure and vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210774728.4A CN115325129B (en) | 2022-07-01 | 2022-07-01 | Differential structure and vehicle |
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| CN115325129A CN115325129A (en) | 2022-11-11 |
| CN115325129B true CN115325129B (en) | 2024-04-05 |
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| CN202210774728.4A Active CN115325129B (en) | 2022-07-01 | 2022-07-01 | Differential structure and vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR102781383B1 (en) * | 2023-05-15 | 2025-03-12 | 현대트랜시스 주식회사 | Disconnector apparatus |
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| US6835155B2 (en) * | 2002-12-11 | 2004-12-28 | Dana Corporation | Position compensating differential locking mechanism |
| JP5030491B2 (en) * | 2006-07-06 | 2012-09-19 | Ｇｋｎドライブラインジャパン株式会社 | Differential equipment |
| US8388486B2 (en) * | 2009-08-11 | 2013-03-05 | Magna Powertrain Of America, Inc. | AWD vehicle with active disconnect coupling having multi-stage ball ramp |
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| EP1231095A2 (en) * | 2001-02-13 | 2002-08-14 | American Axle & Manufacturing Inc. | Power on demand differential |
| JP2004203111A (en) * | 2002-12-24 | 2004-07-22 | Suzuki Motor Corp | Transfer device of four-wheel drive car |
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| CN115325129A (en) | 2022-11-11 |
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Effective date of registration: 20240606 Address after: No. 98 Beihui Road, Huishan Industrial Transformation and Agglomeration Zone, Wuxi City, Jiangsu Province, China Patentee after: Wuxi Xingqu Power Technology Co.,Ltd. Country or region after: China Patentee after: Wuxi Xingqu Technology Co.,Ltd. Address before: 310051 No. 1760, Jiangling Road, Hangzhou, Zhejiang, Binjiang District Patentee before: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. Country or region before: China Patentee before: Wuxi Xingqu Technology Co.,Ltd. Patentee before: Wuxi Xingqu Power Technology Co.,Ltd. |
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