CN120819589A - A transverse front wheel drive transfer case torque disconnect mechanism and method - Google Patents
A transverse front wheel drive transfer case torque disconnect mechanism and methodInfo
- Publication number
- CN120819589A CN120819589A CN202511027075.3A CN202511027075A CN120819589A CN 120819589 A CN120819589 A CN 120819589A CN 202511027075 A CN202511027075 A CN 202511027075A CN 120819589 A CN120819589 A CN 120819589A
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- CN
- China
- Prior art keywords
- ring
- sliding
- ring gear
- cam
- gear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D47/00—Systems of clutches, or clutches and couplings, comprising devices of types grouped under at least two of the preceding guide headings
- F16D47/04—Systems of clutches, or clutches and couplings, comprising devices of types grouped under at least two of the preceding guide headings of which at least one is a freewheel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/02—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of clutch
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/34—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D11/00—Clutches in which the members have interengaging parts
- F16D11/14—Clutches in which the members have interengaging parts with clutching members movable only axially
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D41/00—Freewheels or freewheel clutches
- F16D41/04—Freewheels or freewheel clutches combined with a clutch for locking the driving and driven members
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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
- F16H57/00—General details of gearing
- F16H57/0018—Shaft assemblies for gearings
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D11/00—Clutches in which the members have interengaging parts
- F16D2011/008—Clutches in which the members have interengaging parts characterised by the form of the teeth forming the inter-engaging parts; Details of shape or structure of these teeth
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
- F16D23/12—Mechanical clutch-actuating mechanisms arranged outside the clutch as such
- F16D2023/123—Clutch actuation by cams, ramps or ball-screw mechanisms
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Arrangement And Driving Of Transmission Devices (AREA)
Abstract
本发明涉及汽车传动技术领域，尤其是一种横置前轮驱动分动器传扭断开机构及方法，结构包括输入轴总成，包括花键空心轴以及与其过盈配合的滑动轴承；齿圈轴总成，包括齿圈空心轴以及与其键连接的被动齿圈，齿圈空心轴过盈配合装配在滑动轴承上，被动齿圈具有外齿；扭矩断开机构，包括滑动齿圈及其驱动机构，滑动齿圈与花键空心轴滑动连接且跟随其旋转，滑动齿圈设有内齿，驱动机构可驱动滑动齿圈沿轴向运动使其内齿与被动齿圈的外齿啮合或分离；本发明通过设置扭矩断开机构把分动器输入轴变成两段式，设置的扭矩断开机构包括滑动齿圈及其驱动机构，驱动机构可驱动滑动齿圈沿轴向运动使其内齿与被动齿圈的外齿啮合或分离，实现扭矩的传递和断开。
The present invention relates to the field of automobile transmission technology, and in particular to a torque disconnect mechanism and method for a transverse front-wheel drive transfer case. The structure comprises an input shaft assembly, including a splined hollow shaft and a sliding bearing with an interference fit therewith; a ring gear shaft assembly, including a ring gear hollow shaft and a passive ring gear connected to the splined hollow shaft, the ring gear hollow shaft being assembled on the sliding bearing with an interference fit, and the passive ring gear having external teeth; a torque disconnect mechanism, including a sliding ring gear and a driving mechanism thereof, the sliding ring gear being slidably connected to the splined hollow shaft and rotating with it, the sliding ring gear being provided with internal teeth, and the driving mechanism being capable of driving the sliding ring gear to move axially so that its internal teeth engage or disengage with the external teeth of the passive ring gear; the present invention converts the transfer case input shaft into a two-stage type by providing a torque disconnect mechanism, the provided torque disconnect mechanism comprising a sliding ring gear and a driving mechanism thereof, the driving mechanism being capable of driving the sliding ring gear to move axially so that its internal teeth engage or disengage with the external teeth of the passive ring gear, thereby achieving torque transmission and disconnection.
Description
Technical Field
The invention relates to the technical field of automobile transmission, in particular to a transverse front wheel drive transfer case torque transmission disconnection mechanism and a method.
Background
Along with the diversification of vehicle environments, in order to adapt to the vehicle demands of different road conditions, the market share of the urban light off-road timely four-wheel drive vehicles is gradually improved, and the variety of vehicles is being enriched. The timely four-wheel drive function is only used under specific road conditions and environments, and adverse effects such as NVH and energy consumption increase caused by idle running of a four-wheel drive system are reduced as much as possible under the condition that the four-wheel drive function is not needed.
Most of transverse front wheel drive transfer cases in the current market are normally closed structures and have no torque disconnection function. The transverse front wheel driving transfer case is connected with the gearbox through spline teeth, and partial torque output by the gearbox is transmitted to the middle transmission shaft through the transfer case and then transmitted to the two rear wheels. Because the input shaft and the output shaft of the transfer case are meshed through gears, when the vehicle runs, the transfer case can transmit torque and rotating speed to the intermediate shaft, so that the rear wheels can intelligently acquire the torque. The rear wheel torque is not always required and the intermediate drive shaft continues to rotate when no torque is required. Therefore, as long as the automobile is running, no matter the four-wheel drive function is needed, the transfer case can transmit the output torque of the gearbox to the middle transmission shaft, so that the middle transmission shaft always rotates, the fuel consumption is increased, and the potential problem of high-speed shaking of the transmission shaft is caused.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide a transverse front wheel drive transfer case torque transmission disconnection mechanism and a method, wherein a torque disconnection mechanism is arranged to change an input shaft of a transfer case into two sections, the arranged torque disconnection mechanism comprises a sliding gear ring and a driving mechanism thereof, and the driving mechanism can drive the sliding gear ring to axially move so that internal teeth of the sliding gear ring are meshed with or separated from external teeth of a driven gear ring, thereby realizing torque transmission and disconnection. In order to achieve the above object, the present invention is realized by the following technical scheme:
in a first aspect, the present invention provides a transverse front wheel drive transfer case torque transfer disconnect mechanism comprising:
the input shaft assembly comprises a spline hollow shaft and a sliding bearing in interference fit with the spline hollow shaft;
The gear ring shaft assembly comprises a gear ring hollow shaft and a driven gear ring connected with the gear ring hollow shaft through a key, the gear ring hollow shaft is assembled on the sliding bearing in an interference fit manner, and the driven gear ring is provided with external teeth;
The torque disconnecting mechanism comprises a sliding gear ring and a driving mechanism thereof, wherein the sliding gear ring is in sliding connection with the spline hollow shaft and rotates along with the spline hollow shaft, the sliding gear ring is provided with internal teeth, and the driving mechanism can drive the sliding gear ring to axially move so that the internal teeth of the sliding gear ring are meshed with or separated from the external teeth of the driven gear ring.
The spline hollow shaft is provided with a driving gear ring bearing, the driving mechanism comprises a driving gear ring assembly and a cam ring provided with a cam guide groove, the driving gear ring assembly comprises a driving gear ring and a cam support, the driving gear ring is assembled on the driving gear ring bearing in an interference fit mode, the cam support is arranged on the driving gear ring and is provided with a sliding sleeve matched with the cam guide groove, and the sliding sleeve moves along the cam guide groove under the rotation of the driving gear ring to enable the cam ring to move in a reciprocating mode along the axial direction, so that the sliding gear ring connected with the cam ring is driven to move.
As a further implementation, the drive mechanism further includes a first bearing fitted between the sliding ring gear and the cam ring.
As a further implementation manner, the cam support is provided with a plurality of cam supports, and the cam supports are installed on the end face of the driving gear ring through fixing bolts and are uniformly arranged.
As a further implementation mode, one end of the cam support is vertically arranged on the end face of the driving gear ring, and the other end of the cam support is vertically arranged on the sliding sleeve.
As a further implementation mode, the driving mechanism comprises an elastic piece which is sleeved on the spline hollow shaft, and the elastic piece is attached to the end face of the sliding gear ring.
As a further implementation, the sliding ring gear has a mounting space that accommodates the elastic element.
As a further implementation, the elastic element is a wave plate spring.
As a further implementation manner, the gear ring shaft assembly further comprises a second bearing, and the second bearing is sleeved on the gear ring hollow shaft and in interference fit.
In a second aspect, the invention provides a working method of the torque transmission disconnection mechanism of the transverse front wheel drive transfer case according to the first aspect, which comprises the following steps:
When the transmission torque is required to be disconnected, the driving gear ring rotates in the opposite direction to drive the cam ring and the sliding gear ring to return, so that the sliding gear ring is separated from the driven gear ring, and the torque transmission is interrupted.
The beneficial effects of the invention are as follows:
1. According to the invention, the torque disconnecting mechanism is arranged to change the input shaft of the transfer case into two sections, the arranged torque disconnecting mechanism comprises the sliding gear ring and the driving mechanism thereof, the driving mechanism can drive the sliding gear ring to axially move so that the internal teeth of the sliding gear ring are meshed with or separated from the external teeth of the driven gear ring, and torque transmission and disconnection are realized, so that the problem that when two rear wheels do not need torque, torque input from a gearbox can be disconnected in time through the internal structure of the transfer case, the energy consumption increase caused by idle rotation of an intermediate transmission shaft is reduced, but when torque is needed again, the combination can be quickly recovered, the four-wheel drive function is reproduced, and the NVH problems such as fuel consumption, shake caused by high-speed rotation of the intermediate transmission shaft and the like are reduced.
2. The cam ring which can generate axial thrust and is provided with the cam guide groove structure is arranged on the spline hollow shaft. When torque transmission is needed, the driving gear ring and the cam ring on the gear rotary disconnecting mechanism of the servo motor generate axial thrust under the guiding action of the cam guide groove on the cam ring, and the sliding gear ring is pushed to move towards the driven gear ring along the axial direction, so that the combination of the sliding gear ring and the driven gear ring on the gear ring hollow shaft is realized. If torque transmission needs to be disconnected, the driving gear ring reversely rotates, the sliding gear ring is dragged to return to the initial position by the cam ring, and the functions of combining and disconnecting the torque are realized by repeating the actions.
3. When the torque transmission is required to be disconnected, the cam ring and the sliding gear ring are reset, the cam ring is sleeved on the spline hollow shaft and is assisted by elastic force generated by the compressed wave plate spring to reset, so that the sliding gear ring is separated from the driven gear ring, and the torque transmission is interrupted.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.
FIG. 1 is a schematic diagram of a transverse front wheel drive transfer case torque disconnect in an embodiment of the present invention.
FIG. 2 is an exploded view of a front transverse wheel drive transfer torque disconnect in an embodiment of the present invention.
Fig. 3 is a cross-sectional view of a transverse front wheel drive transfer case torque disconnect in an embodiment of the invention.
Fig. 4 is a partial block diagram of a transverse front wheel drive transfer torque disconnect in an embodiment of the present invention.
In the drawings, the mutual spacing or size is exaggerated for showing the positions of the parts, and the schematic drawings are only schematic.
The gear ring gear comprises an input shaft assembly, an 11-spline hollow shaft, 12-driving gear ring bearings, 13-sliding bearings, 2-torque disconnecting mechanisms, 21-driving gear ring assemblies, 211-driving gear rings, 212-cam supports, 213-sliding sleeves, 214-fixing bolts, 215-fixing pins, 22-sliding gear rings, 23-first bearings, 24-cam rings, 25-wave plate springs, 3-gear ring shaft assemblies, 31-driven gear rings, 32-second bearings, 33-gear ring hollow shafts.
Detailed Description
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
Example 1
In an exemplary embodiment of the present invention, referring to fig. 1 to 4, a transverse front wheel drive transfer torque disconnection mechanism includes an input shaft assembly 1, a torque disconnection mechanism 2, and a ring gear shaft assembly 3.
The input shaft assembly 1 includes a splined hollow shaft 11, and an active ring gear bearing 12 and a plain bearing 13 in interference fit therewith.
The spline hollow shaft 11 is a power input part of the whole mechanism, and one end outer surface of the spline hollow shaft is provided with a spline structure for connecting with a gearbox. The rest positions are provided with spline structures according to requirements. The material of the spline hollow shaft 11 can be high-strength alloy steel so as to ensure that the spline hollow shaft can bear high torque transmission.
The driving gear ring bearing 12 and the sliding bearing 13 are both assembled on the spline hollow shaft 11 in an interference fit. The driving ring gear bearing 12 is mounted adjacent to the spline structure and the slide bearing 13 is provided with two for assembling the ring gear shaft assembly 3. The sliding bearing 13 is a high-precision sliding bearing, is in interference fit with the spline hollow shaft 11, and the inner diameter of the sliding bearing 13 is tightly matched with the outer diameter of the spline hollow shaft 11, so that stability in torque transmission is ensured.
The gear ring shaft assembly 3 comprises a gear ring hollow shaft 33, a driven gear ring 31 in key connection with the gear ring hollow shaft 33, and a second bearing 32 sleeved on the gear ring hollow shaft 33 and in interference fit, wherein the second bearing 32 is a cone bearing. The ring gear hollow shaft 33 is a power output member, and has a key groove provided on an outer surface of one end thereof for key-connection with the passive ring gear 31. The internal diameter of the hollow ring shaft 33 is in interference fit with the external diameter of the sliding bearing 13, ensuring a tight connection between the two. The ring gear hollow shaft 33 is connected to the intermediate drive shaft as a power output member.
The passive ring gear 31 is fixed to the ring gear hollow shaft 33 by a key connection, and is provided with external teeth on its outer surface for engagement with the internal teeth of the sliding ring gear 22. The tooth shape and the tooth number of the passive gear ring 31 are designed according to the actual transmission ratio requirement, and the material is high-strength alloy steel so as to ensure the wear resistance and the strength of the passive gear ring.
The second bearing 32 is sleeved on the hollow ring shaft 33 and is in interference fit, and is used for supporting the hollow ring shaft 33, so that stability of the hollow ring shaft 33 in torque transmission is ensured.
The torque disconnecting mechanism 2 comprises a sliding gear ring 22 and a driving mechanism thereof, wherein the sliding gear ring 22 is connected with the spline hollow shaft 11 in a key way, is connected with the spline hollow shaft 11 in a sliding way and rotates along with the spline hollow shaft 11, the sliding gear ring 22 is provided with internal teeth, and the driving mechanism can drive the sliding gear ring 22 to move along the axial direction so that the internal teeth of the sliding gear ring are meshed with or separated from the external teeth of the driven gear ring 31. In the present embodiment, the internal teeth of the sliding ring gear 22 are internal splines, and the external teeth of the passive ring gear 31 are external splines, which are in spline connection.
The inner surface of the specific sliding gear ring 22 is provided with inner teeth and is in sliding connection with the spline outer surface of the spline hollow shaft 11. The sliding ring gear 22 can slide axially on the splined hollow shaft 11 while rotating with the splined hollow shaft 11. The external teeth of the sliding ring gear 22 and the internal teeth of the driven ring gear 31 are designed to be engageable with or disengageable from each other.
The torque disconnecting mechanism 2 provided in this embodiment includes a sliding gear ring 22 and a driving mechanism thereof, where the driving mechanism can drive the sliding gear ring 22 to move axially so that internal teeth of the sliding gear ring are meshed with or separated from external teeth of the driven gear ring 31, thereby realizing torque transmission and disconnection, so as to solve the problem that when two rear wheels do not need torque, torque input from a gearbox can be disconnected in time through an internal structure of a transfer case, reduce energy consumption increase caused by idle rotation of an intermediate transmission shaft, but when torque is needed again, the sliding gear ring can be quickly recovered and combined, and a four-wheel drive function is reproduced, thereby reducing fuel consumption and avoiding the NVH problems caused by high-speed rotation of the intermediate transmission shaft.
The spline hollow shaft 11 is provided with a driving gear ring bearing 12, the driving mechanism comprises a driving gear ring assembly 21 and a cam ring 24 provided with a cam guide groove, the driving gear ring assembly 21 comprises a driving gear ring 211 and a cam support 212, the driving gear ring 211 is assembled on the driving gear ring bearing 12 in an interference fit mode, the cam support 212 is arranged on the driving gear ring 211 and provided with a sliding sleeve 213 matched with the cam guide groove, and the sliding sleeve 213 is driven by rotation of the driving gear ring 211 to move along the cam guide groove so that the cam ring 24 can reciprocate along the axial direction, and then the sliding gear ring 22 connected with the cam ring 24 is driven to move.
The present embodiment provides a cam ring 24 with a cam guide groove structure capable of generating axial thrust on the spline hollow shaft 11. When torque transmission is needed, through the driving gear ring 211 and the cam ring 24 on the gear rotation disconnecting mechanism of the servo motor, axial thrust is generated under the guiding action of the cam guide groove on the cam ring 24, and the sliding gear ring 22 is pushed to move towards the driven gear ring 31 along the axial direction, so that the combination of the sliding gear ring 22 and the driven gear ring 31 on the gear ring hollow shaft 33 is realized. If torque transmission needs to be disconnected, the driving gear ring 211 rotates reversely, the sliding gear ring 22 is dragged to return to the initial position by the cam ring 24, and the above actions are repeated, so that the functions of combining and disconnecting the torque are realized.
The driving gear ring 211 is fitted on the driving gear ring bearing 12 in an interference fit, and the driving gear ring bearing 12 is mounted on the spline hollow shaft 11. The cam bracket 212 is uniformly mounted on the end surface of the driving gear ring 211 through a fixing bolt 214, and the other end of the cam bracket 212 is vertically mounted with a sliding sleeve 213. The sliding sleeve 213 mates with a cam guide groove on the cam ring 24.
The cam bracket 212 is provided with a plurality of fixing bolts 214 which are installed on the end face of the driving gear ring 211 and are uniformly arranged. Specifically, one end of the cam bracket 212 is mounted on the end surface of the driving gear ring 211 by a fixing bolt 214 and is perpendicular to the end surface, and the other end is vertically mounted with a sliding sleeve 213.
Cam ring 24 is provided with a cam guide groove which cooperates with slide sleeve 213. When the driving gear ring 211 rotates, the sliding sleeve 213 moves along the cam guiding groove to drive the cam ring 24 to reciprocate along the axial direction, so as to drive the sliding gear ring 22 to move along the axial direction. The cam ring 24 has an annular structure, and a cam guide groove is formed on the circumference of the ring, and extends circumferentially from one side of the ring to the other side. In design, the rotational freedom of the cam ring 24 is limited, which has only the freedom of axial movement. Specifically, fixing pins 215 are provided on the circumferential outer edge of the cam ring 24, which limit the rotational freedom of the cam ring 24 and provide it with axial freedom. When torque is required to be transmitted, the servo motor meshed with the driving gear ring 211 drives the driving gear ring 211 to rotate, the cam ring 24 axially moves under the guidance of the cam guide groove, the moving cam ring 24 further drives the sliding gear ring 22 to axially move, finally the sliding gear ring 22 is meshed with the driven gear ring 31, and the torque of the gearbox is transmitted from the spline hollow shaft 11 to the gear ring hollow shaft 33.
The drive mechanism further includes a first bearing 23, the first bearing 23 being fitted between the sliding ring gear 22 and the cam ring 24 for reducing friction therebetween, ensuring smooth movement of the sliding ring gear 22. The first bearing 23 is a thrust angular contact ball bearing, the inner ring of the first bearing 23 is in interference fit with the sliding gear ring 22, and the outer ring of the first bearing 23 is in interference fit with the cam ring 24.
The driving mechanism comprises an elastic piece which is sleeved on the spline hollow shaft 11 and is attached to the end face of the sliding gear ring 22. When the transmission torque is required to be disconnected, the driving gear ring 211 rotates reversely, the cam ring 24 is driven to return under the guiding action of the cam guide groove, meanwhile, the axial thrust generated by the elastic piece assists the sliding gear ring 22 to return rapidly, the two mechanisms are disconnected, and the torque transmission is interrupted.
The sliding ring gear 22 has an installation space to accommodate the elastic member. In this embodiment, the sliding gear ring 22 has a horizontal U-shaped structure, and the upper top outer surface is based on the first bearing 23, and the upper top inner surface is provided with internal teeth engaged with the external teeth of the driven gear ring 31. The middle is the installation space of the elastic member, and in this embodiment, the elastic member is the wave plate spring 25, it will be understood that in other embodiments, other types of elastic members may be used as the elastic member, and the present invention is not limited to the type of elastic member. The outer surface of the bottom of the sliding gear ring 22 is provided with a key connection structure which is in key connection with the spline hollow shaft 11.
When the torque transmission is required to be disconnected, the cam ring 24 and the sliding gear ring 22 are reset, the cam ring 24 is assisted to reset by elastic force generated by the compressed wave plate spring 25, the sliding gear ring 22 is separated from the driven gear ring 31, and the torque transmission is interrupted.
The assembly process of the mechanism comprises the steps of assembling the spline hollow shaft 11 together with the driving gear ring bearing 12 and the two sliding bearings 13 in an interference way, then assembling the driving gear ring 211 on the driving gear ring bearing 12 in an interference way, assembling the cam bracket 212 and the sliding sleeve 213 in a thermal expansion way, and then assembling the cam gear ring 24 together with the first bearing 23 and the sliding gear ring 22. Finally, the sliding sleeve 213 on the cam bracket 212 is put into the cam guide groove of the cam ring 24, the other ends of the 4 cam brackets 212 are fixed on the driving gear ring 211 through the fixing bolts 214, the wave plate spring 25 is sleeved on the spline hollow shaft 11, and the wave plate spring 25 is moved to the end face of the sliding gear ring 22 and is attached to the end face of the sliding gear ring. The hollow gear ring shaft 33 is assembled with the 2 second bearings 32, the driven gear ring 31 is assembled on the spline of the hollow gear ring shaft 33 in an interference mode, the hollow gear ring shaft 33 is assembled with the hollow spline shaft 11, after the above parts are assembled, the sliding gear ring 22 and the driven gear ring 31 are positioned on the same shaft center, the sliding gear ring and the driven gear ring 31 are not combined, and a certain distance is formed between the sliding gear ring and the driven gear ring along the axial direction.
The spline hollow shaft 11 is connected with the internal spline of the gearbox, the gear ring hollow shaft 33 is assembled with the four-wheel drive intermediate transmission shaft through bolts, the spline hollow shaft 11 is connected with the gear ring hollow shaft 31 through the torque disconnecting mechanism 2, and finally the gear box hollow shaft 11 is assembled into a torque transmission structure capable of being disconnected, and the gearbox torque is transmitted to the gear ring hollow shaft 33 through the disconnecting mechanism and then transmitted to the intermediate transmission shaft.
Example two
According to the working method of the transverse front wheel drive transfer case torque transmission disconnection mechanism in the first embodiment, the working method comprises the following steps:
when torque is required to be transmitted, a servo motor meshed with the driving gear ring 211 drives the driving gear ring 211 to rotate, the cam bracket 212 on the driving gear ring 211 rotates along with the driving gear ring, the cam bracket 212 is assembled with the cam ring 24 on the other side and has the function of a cam guide groove to drive the cam ring 24 to axially move, the moving cam ring 24 further drives the sliding gear ring 22 to axially move, meanwhile, the wave plate spring 25 is compressed to finally enable the sliding gear ring 22 to be meshed with the driven gear ring 31, the gearbox torque is transmitted to the gear ring hollow shaft 33 from the spline hollow shaft 11, when torque is required to be disconnected, the servo motor reversely drives the driving gear ring 211 to rotate, the cam ring 24 and the sliding gear ring 22 are driven to return due to the function of the cam guide groove, and in the process, the wave plate spring 25 sleeved on the spline hollow shaft 11 and compressed to generate elastic force to assist the cam ring 24 to return, so that the sliding gear ring 22 is separated from the driven gear ring 31, and torque transmission is interrupted.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202511027075.3A CN120819589A (en) | 2025-07-24 | 2025-07-24 | A transverse front wheel drive transfer case torque disconnect mechanism and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202511027075.3A CN120819589A (en) | 2025-07-24 | 2025-07-24 | A transverse front wheel drive transfer case torque disconnect mechanism and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN120819589A true CN120819589A (en) | 2025-10-21 |
Family
ID=97375092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202511027075.3A Pending CN120819589A (en) | 2025-07-24 | 2025-07-24 | A transverse front wheel drive transfer case torque disconnect mechanism and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN120819589A (en) |
-
2025
- 2025-07-24 CN CN202511027075.3A patent/CN120819589A/en active Pending
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