CN204755825U - Differential mechanism and motor vehicle - Google Patents
Differential mechanism and motor vehicle Download PDFInfo
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- CN204755825U CN204755825U CN201520262370.2U CN201520262370U CN204755825U CN 204755825 U CN204755825 U CN 204755825U CN 201520262370 U CN201520262370 U CN 201520262370U CN 204755825 U CN204755825 U CN 204755825U
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Abstract
The utility model provides a differential mechanism and motor vehicle relates to speed change gear technical field. The differential mechanism includes casing, left half axle and right semi -axis, the casing is rotatable, just left half axle and right semi -axis all with the coaxial setting of rotation axis of casing, be equipped with the ring gear in the casing, be equipped with planet wheel and sun gear in the ring gear, planet wheel cooperation set up in the flank of tooth of ring gear with between the sun gear, be equipped with the planet shaft on the inner wall of casing, the rotatable cover of planet wheel is located the planet wheel is epaxial, the one end of left half axle wears to locate in the casing and with sun gear fixed connection, the right side semi -axis one end with ring gear fixed connection. The differential mechanism can make the structure of differential mechanism compacter, reduced size.
Description
Technical field
The utility model relates to vehicle component technical field, particularly a kind of differential mechanism and Motor Vehicle.
Background technique
Differential mechanism is a kind of transmission part be widely used on Motor Vehicle, its effect is: at Motor Vehicle when turning, the rotating speed of outboard wheels is made to be greater than the rotating speed of inboard wheel, thus the radius of turn of outboard wheels is greater than the radius of turn of inboard wheel, ensure that wheel is pure rolling state when turning, prevent wheel from sliding when turning, thus the tire wear caused when avoiding wheel skid aggravation, power and fuel consumption raise, difficulty and braking ability is turned to be deteriorated, the structure of existing differential mechanism as shown in Figure 1, motor (not shown) is to external toothing 800 transferring power, thus drive shell 100 is rotated, housing 100 drives planet wheel shaft 200 to rotate, planet wheel shaft 200 drives left half axle gear 400 by planet wheel 300, left half axle 600, right axle shaft gear 500 and right axle shaft 700 rotate, left half axle 600 and right axle shaft 700 drive left side wheel (not shown) and the right side wheels (not shown) of vehicle respectively, when its straight line travels, left half axle 600, left half axle gear 400, right axle shaft 700 and right axle shaft gear 500 synchronous axial system, left half axle gear 400 and right axle shaft gear 500 all with planet wheel 300 geo-stationary, when turn inside diameter or the road traveling in injustice, left half axle gear 400 and right axle shaft gear 500 can relatively rotate with planet wheel 300, left half axle 600 is different with right axle shaft 700 rotating speed, both sides vehicle wheel rotational speed is different.
In existing differential mechanism, planet wheel 300 all adopts outer gearing mode with left half axle gear 400 and right axle shaft gear 500, and the direction of planet wheel shaft 200 is vertical with the direction of right axle shaft 700 with left half axle 600, the radial direction of planet wheel 300 and the parallel to an axis of left half axle 600 and right axle shaft 700, left half axle 600 and right axle shaft 700 are positioned at the both sides of planet wheel 300, described differential mechanism size is in the axial direction made to be subject to the axial dimension of left half axle gear 400, the impact of the axial dimension of right axle shaft gear 500 and the radial dimension of planet wheel 300, because the radial dimension of planet wheel 300 is much larger than the axial dimension of planet wheel 300, therefore, the radial dimension of planet wheel 300 makes described differential mechanism size in the axial direction larger, be unfavorable for the volume reducing differential mechanism.
Model utility content
In view of this, the utility model is intended to propose a kind of differential mechanism and Motor Vehicle, to make the structure of differential mechanism compacter, reduces the volume of differential mechanism.
For achieving the above object, the technical solution of the utility model is achieved in that
A kind of differential mechanism, comprise housing, left half axle and right axle shaft, described housing is rotatable, and described left half axle and described right axle shaft are all arranged with the coaxial of described housing, ring gear is provided with in described housing, planet wheel and sun gear is provided with in described ring gear, described planet wheel is equipped with between the flank of tooth and described sun gear of described ring gear, the inwall of described housing is provided with planet wheel shaft, described planet wheel is rotating to be sheathed on described planet wheel shaft, one end of described left half axle to be arranged in described housing and to be fixedly connected with described sun gear, one end of described right axle shaft is fixedly connected with described ring gear.
Further, lockable mechanism is provided with between the outer ring of described housing and described ring gear, described lockable mechanism comprises driven unit and the first friction member be oppositely arranged and the second friction member, described first friction member and described second friction member are between the two side of described housing, described first friction member is slidably connected on the internal surface of described housing, described second friction member is slidably connected on described ring gear, described driven unit can drive described first friction member to move, make described first friction member and described second friction member laminating and on the stacked sidewall being resisted against described housing, now, described housing and described ring gear can synchronous axial system.
Further, described drive unit comprises the piston in oil hydraulic cylinder, Returnning spring and described oil hydraulic cylinder, described oil hydraulic cylinder is located on the inwall of described housing, described housing is provided with the oil duct be communicated with described oil hydraulic cylinder, one end of described Returnning spring is connected with the inwall of described oil hydraulic cylinder, the other end is connected with described piston, and when described first friction member and described second friction member laminating, described spring is in extended state.
Further, described lockable mechanism also comprises solenoid valve and hydrovalve, and described hydrovalve is for controlling the logical and disconnected of described oil duct, and described solenoid valve is for controlling the Kai Heguan of described hydrovalve.
Further, described first friction member comprises the multiple steel discs be arranged side by side, the internal surface of described housing is provided with the first chute being parallel to described ring gear axis, described multiple steel disc is equipped with in described first chute, described second friction member comprises the multiple friction plates be arranged side by side, the outer ring of described ring gear is provided with the second chute being parallel to described ring gear axis, described multiple friction plate is equipped with in described second chute, and described multiple friction plate and described multiple steel disc are at the direction alternate being parallel to described ring gear axis.
Further, also comprise: the first velocity package, for detecting the rotating speed of described left half axle; Second velocity package, for detecting the rotating speed of described right axle shaft; 3rd velocity package, for detecting the rotating speed of described housing; And control gear, when described left half axle is different with the rotating speed of described right axle shaft, and when the rotating speed of described housing is less than or equal to predetermined value, described control gear can control described driven unit to be made described first friction member move and fits with described second friction member.
Further, described planet wheel has multiple, described multiple planet wheel is uniformly distributed between the flank of tooth of described ring gear and described sun gear, and described inner walls is provided with multiple planet wheel shaft, and each described planet wheel one_to_one corresponding is arranged on each described planet wheel shaft.
Concrete, described control gear is the automatic transmission case control unit of vehicle.
Preferably, described oil hydraulic cylinder and described housing one-body molded.
A kind of Motor Vehicle, described Motor Vehicle is provided with the differential mechanism described in above-mentioned arbitrary technological scheme.
Relative to prior art, differential mechanism described in the utility model and Motor Vehicle have following advantage:
After differential mechanism described in the utility model is applied to Motor Vehicle, the motor of Motor Vehicle and described housing can be in transmission connection, described housing into rotation can be driven, in the process that described Motor Vehicle normally travels, housing into rotation described in described engine-driving, described housing drives described planet wheel to rotate around described sun gear by described planet wheel shaft, and drive described sun gear and described ring gear synchronous axial system, described sun gear drives described left half axle to rotate, described ring gear drives described right axle shaft to rotate, now, described left half axle and described right axle shaft synchronous axial system, the wheel synchronous axial system of two sides of vehicle can be made, in the process of turn inside diameter, there is speed discrepancy in both sides wheel, also there is speed discrepancy in described left half axle and described right axle shaft, described planet wheel is while rotating around described sun gear, described planet wheel rotates around described planet wheel shaft, described sun gear and described ring gear is made to form speed discrepancy, thus mate with the speed discrepancy of described left half axle and described right axle shaft, thus can avoid because both sides wheel is synchronously turned and skid, because described planet wheel and described sun gear are all located in described ring gear by differential mechanism described in the utility model, and described ring gear is located in described housing, the radial dimension solving planet wheel of the prior art makes the problem of the increase of differential mechanism axial dimension, thus the axially size of described differential mechanism can be reduced, be conducive to the volume reducing differential mechanism, and be all positioned at described ring gear due to described sun gear and described planet wheel, make the structure of differential mechanism compacter.Thus, the structure of differential mechanism can be made compacter, reduce the volume of differential mechanism.
Accompanying drawing explanation
The accompanying drawing forming a part of the present utility model is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the schematic diagram of existing differential mechanism;
Fig. 2 is the schematic diagram of the differential mechanism described in the utility model embodiment;
Fig. 3 is the partial view in A portion in Fig. 2.
Description of reference numerals:
In Fig. 1: 100-housing, 200-planet wheel shaft, 300-planet wheel, 400-left half axle gear, 500-right axle shaft gear, 600-left half axle, 700-right axle shaft, 800-external toothing.
In Fig. 2 and Fig. 3: 1-housing, 101-planet wheel shaft, 102-oil duct, 103-external toothing, 2-left half axle, 3-right axle shaft, 4-ring gear, 5-sun gear, 6-planet wheel, 7-lockable mechanism, 71-driven unit, 72-first friction member, 73-second friction member, 711-oil hydraulic cylinder, 712-Returnning spring, 713-piston, 721-steel disc, 731-friction plate, 8-first signal is taken turns, and 9-secondary signal is taken turns, and 10-the 3rd signal is taken turns.
Embodiment
It should be noted that, when not conflicting, the embodiment in the utility model and the feature in embodiment can combine mutually.
In addition, the term " first " mentioned in embodiment of the present utility model, " second " and " the 3rd " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristics.Thus, be limited with " first ", the feature of " second " and " the 3rd " can express or impliedly comprise one or more these features.In description of the present utility model, except as otherwise noted, the implication of " multiple " is two or more.Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with the embodiments.
With reference to Fig. 2 and Fig. 3, Fig. 2 and Fig. 3 provides a specific embodiment of differential mechanism for the utility model, described differential mechanism comprises housing 1, left half axle 2 and right axle shaft 3, housing 1 outer surface is provided with external toothing 103, be provided with for the transmission shaft (not shown) to described differential mechanism transferring power in Motor Vehicle, described transmission shaft is provided with driving gear (not shown), described driving gear engages with described external toothing 103, the power of the motor (not shown) of Motor Vehicle reaches housing 1 by the described driving gear of described transmission shaft and engagement and described external toothing 103, and housing 1 is rotated, left half axle 2 and right axle shaft 3 are all arranged with the coaxial of housing 1, ring gear 4 is provided with in housing 1, planet wheel 6 and sun gear 5 is provided with in ring gear 4, planet wheel 6 is equipped with between the flank of tooth and sun gear 5 of ring gear 4, the inwall of housing 1 is provided with planet wheel shaft 101, planet wheel 6 is rotating to be sheathed on planet wheel shaft 101, one end of left half axle 2 to be arranged in housing 1 and to be fixedly connected with sun gear 5, the other end is used for being connected with the left side wheel (not shown) of vehicle, one end of right axle shaft 3 is fixedly connected with ring gear 4, the other end is used for being connected with the right side wheels (not shown) of vehicle.
In the process of normal vehicle operation, engine-driving housing 1 rotates, housing 1 drives planet wheel 6 to rotate around sun gear 5 by planet wheel shaft 101, and drive sun gear 5 and ring gear 4 synchronous axial system, sun gear 5 drives left half axle 2 to rotate, ring gear 4 drives right axle shaft 3 to rotate, now, left half axle 2 and right axle shaft 3 synchronous axial system, the wheel synchronous axial system of two sides of vehicle can be made, in the process of turn inside diameter, there is speed discrepancy in both sides wheel, also there is speed discrepancy in left half axle 2 and right axle shaft 3, planet wheel 6 is while rotating around sun gear 5, planet wheel 6 spider gear shaft 101 that detours rotates, sun gear 5 and ring gear 4 is made to form speed discrepancy, thus mate with the speed discrepancy of left half axle 2 and right axle shaft 3, thus can avoid because both sides wheel is synchronously turned and skid, because planet wheel 6 and sun gear 5 are all located in ring gear 4 by differential mechanism described in the utility model, and ring gear 4 is located in housing 1, planet wheel 6 axially simultaneously with the parallel to an axis of left half axle 2 and right axle shaft 3, the radial dimension of planet wheel 6 is made not affect the axial dimension of described differential mechanism, because the axial dimension of planet wheel 6 is much smaller than himself radial dimension, therefore, the differential mechanism that the utility model embodiment provides solves the problem that planet wheel radial dimension of the prior art makes the increase of differential mechanism axial dimension, thus described differential mechanism size in the axial direction can be reduced, be conducive to the volume reducing differential mechanism, and be all positioned at ring gear 4 due to sun gear 5 and planet wheel 6, the structure of differential mechanism can be made compacter.Thus, the structure of differential mechanism can be made compacter, reduce the volume of differential mechanism.
The road conditions contacted when the wheel of side are poor (such as muddy, ice and snow road etc.) time, vehicle is in turning process, the wheel of this side may skid, and the wheel of opposite side still keeps the speed discrepancy with the wheel skidded, make the wheel of skidding side cannot obtain enough moments of torsion, thus slippery road surface cannot be sailed out of, therefore, when skidding to prevent single wheel, vehicle is difficult to sail out of slippery road surface, lockable mechanism 7 can be set between housing 1 and the outer ring of ring gear 4, when single wheel skids, by lockable mechanism 7 by ring gear 4 and housing 1 locking, make left half axle 2 and right axle shaft 3 only can synchronous axial system, thus the moment of torsion of skidding single wheel can be reached the wheel of side of not skidding, the wheel being convenient to skid sails out of the road surface of skidding, the first friction member 72 and the second friction member 73 that lockable mechanism 7 specifically comprises driven unit 71 and is oppositely arranged, first friction member 72 and the second friction member 73 are between the two side of housing 1, first friction member 72 is slidably connected with the internal surface of housing 1, second friction member 73 is slidably connected with the outer ring of ring gear 4, driven unit 71 can drive the first friction member 72 to move and apply pressure to the first friction member, first friction member 72 and the second friction member 73 are fitted and sidewall to the side of housing 1 moves, finally against on the side wall, now, frictional force is there is between the first friction member 72 and the second friction member 73, relative sliding cannot be there is, housing 1 and first friction member 72 and second friction member 73 transferring power of ring gear 4 by fitting, make housing 1 and ring gear 4 can synchronous axial system.
Drive unit 71 can adopt various ways, such as drive unit 71 can adopt the mode of solenoid actuated, at housing 1 inwall, electromagnet (not shown) is set, be metal material at the first friction member 72 or metallic part (not shown) is set thereon, moved by the first friction member 72 of the magnetic force moving metal of described electromagnet or moved by metallic part described in the magnetic force moving of described electromagnet, thus drive the first friction member 72 to move, make the first friction member 72 fit with the second friction member 73 or be separated, or adopt special crank slide mechanism, promote the first friction member 72 by slide block (not shown) and move, the first friction member 72 and the second friction member 73 are fitted, hydraulic driving mode can also be adopted, promote the first friction member 72 by the piston of oil hydraulic cylinder to move, first friction member 72 and the second friction member 73 are fitted, but the thrust produced due to electromagnet is less, make the frictional force between the first friction member 72 and the second friction member 73 less, easily relative sliding is there is between the first friction member 72 and the second friction member 73, be unfavorable for transmitting larger power between ring gear 4 and housing 1, and adopt special slidercrank mechanism, complex structure, be unfavorable for installing, therefore, the above-mentioned hydraulic driving mode of preferred employing, drive unit 71 specifically can comprise oil hydraulic cylinder 711, oil hydraulic cylinder 711 is located on the inwall of housing 1, and can rotate with housing 1, housing 1 is provided with the oil duct 102 be communicated with oil hydraulic cylinder 711, piston 713 and Returnning spring 712 is provided with in oil hydraulic cylinder 711, and one end of Returnning spring 712 is connected with the inwall of oil hydraulic cylinder 711, the other end is connected with piston 713, when the first friction member 72 and the second friction member 73 are fitted, Returnning spring 712 is in extended state, when needs make both sides wheel synchronous axial system, by oil duct 102 to input hydraulic pressure oil in oil hydraulic cylinder 711, promote piston 713 to move, piston 713 promotes mobile, first friction member 72 and the second friction member 73 fit after synchronizing moving, due to the stop of the wall of housing 1 side, first friction member 72 and the second friction member 73 are finally on the stacked sidewall being resisted against housing 1, utilize the first friction member 72 to move and and frictional force between the second friction member 73 make housing 1 and ring gear 4 can synchronous axial system, when wheel no longer skids, input hydraulic pressure oil in oil hydraulic cylinder 711 can be stopped, the thrust of the hydraulic oil that piston 713 is subject to declines, piston 713 can retract by the Returnning spring 712 being in extended state, first friction member 72 is also no longer subject to the thrust of piston 713, the frictional force between the second friction member 73 and the first friction member 72 is made to reduce or disappear, ring gear 4 and housing 1 can rotate by differential.
Wherein, piston 713 can be fixedly connected with the first friction member 72 or not be connected, if piston 713 is fixedly connected with the first friction member 72, when then Returnning spring 712 retracts piston 713, first friction member 72 can be retracted the position be separated with the second friction member 73 by piston 713, first friction member 72 loses the thrust that piston 713 applies, and the frictional force between itself and the second friction member 73 disappears; If piston 713 is not connected with the first friction member 72, then when Returnning spring 712 retracts piston 713, piston 713 is separated with the first friction member 72, and the first friction member 72 loses the thrust that piston 713 applies, and the frictional force thus and between the second friction member 73 reduces or disappears.No matter piston 713 is fixedly connected with the first friction member 72 or does not connect and all can realize ring gear 4 and housing 1 is synchronous or differential rotates.
For the ease of controlling the process of the hydraulic oil passed in oil hydraulic cylinder 711, lockable mechanism 7 also can comprise solenoid valve (not shown) and hydrovalve (not shown), described hydrovalve is arranged on oil duct 102, for controlling the logical and disconnected of oil duct 102, described solenoid valve is for controlling the Kai Heguan of described hydrovalve, needing the occasion of synchronous axial system, need in oil hydraulic cylinder 711, pass into hydraulic oil to make piston 713 promote the first friction member 72 to move, by described solenoid valve, described hydrovalve is opened, oil duct 102 is connected, use oil supplying device (not shown) by hydraulic oil by oil duct 102 input hydraulic cylinder 711, when in the occasion needing differential to rotate, need piston 711 is resetted, described oil supplying device stops input hydraulic pressure oil, piston 711 resets under Returnning spring 713 tractive, now described solenoid valve can control described hydraulic valve closes, oil duct 102 is blocked.
Concrete, first friction member 72 can comprise the multiple steel discs 721 be arranged side by side, the internal surface of housing 1 is provided with the first chute (not shown) being parallel to ring gear 4 axis, multiple steel disc 721 is equipped with in described chute, second friction member 73 can comprise the multiple friction plates 731 be arranged side by side, the outer ring of ring gear 4 is provided with the second chute (not shown) being parallel to ring gear 4 axis, (731 are equipped with in described second chute multiple friction plate, wherein, multiple friction plates 731 and multiple steel disc 721 are at the direction alternate being parallel to ring gear 4 axis, namely between adjacent two friction plates 731, there is gap, between adjacent two steel discs 721, there is gap, and be provided with a steel disc 721 between adjacent two friction plates 731, a friction plate 721 is provided with between adjacent two steel discs 721, the quantity of friction plate 731 and steel disc 721 is all more than or equal to 2, wherein, the quantity of friction plate 731 specifically can be 3, the quantity of steel disc 721 specifically can be 4.
In order to realize the conversion between synchronous axial system and differential rotate of differential mechanism described in Automated condtrol, described differential mechanism also comprises the first velocity package, the second velocity package, the 3rd velocity package and control gear, the first velocity package can detect left half axle 2 rotating speed and to the rotary speed information of described control gear feedback left half axle 2, second velocity package can detect right axle shaft 3 rotating speed and to the rotary speed information of described control gear feedback right axle shaft 3, 3rd velocity package can detect housing 1 rotating speed and to the rotary speed information of described control gear feedback housing 1, described control gear can control driven unit 7 according to above-mentioned rotary speed information to be made the first friction member 72 move and fits with the second friction member 73, specifically, when the left half axle 2 detected is different with the rotating speed of right axle shaft 3, and the rotating speed of housing 1 is when being less than or equal to predetermined value, described predetermined value can be 0, namely the speed of a motor vehicle is 0, described control gear can control described solenoid valve makes described hydrovalve open, and by described oil supplying device along oil duct 102 to input hydraulic pressure oil in oil hydraulic cylinder 711, piston 713 moves, multiple steel disc 721 is moved and fits with multiple friction plate 731, finally be resisted against on the sidewall of housing 1, housing 1 and ring gear 4 can transmitting torque synchronous axial system, thus both sides wheel synchronous axial system can be made, be conducive to vehicle and sail out of slippery road surface, when the left half axle 2 detected is identical with the rotating speed of right axle shaft 3, and the rotating speed of housing 1 is when being greater than described predetermined value, normal vehicle operation is described, described control gear can control described oil supplying device fuel cut-off, and control described solenoid valve and make described hydraulic valve closes, piston 713 resets under the effect of Returnning spring 712, multiple steel discs 721 lose the thrust of piston 713, frictional force between multiple friction plate 731 and multiple steel disc 721 reduces or disappears, no longer transmitting torque between housing 1 and ring gear 4, housing 1 and ring gear 4 can be rotated by differential, be convenient to vehicle normal turn.
Described first velocity package, described second velocity package and described 3rd velocity package all can adopt the velocity transducer directly can measuring rotating speed, or adopt following assembly:
Described first velocity package comprises the first signal wheel 8 and first sensor (not shown), first signal wheel 8 is set on left half axle 2, described second velocity package comprises secondary signal wheel 9 and the second sensor (not shown), secondary signal wheel 9 is set on right axle shaft 3, described 3rd velocity package comprises the 3rd signal wheel 10 and the 3rd sensor (not shown), 3rd signal wheel 10 is set on housing 1, wherein, above-mentioned each signal wheel is all for gathering tach signal, above-mentioned each sensor is taken turns the tach signal that sends and is changed into the electrical signal comprising rotary speed information send to described control gear for receiving corresponding signal.
Planet wheel 6 can arrange one or more, if only arrange a planet wheel 6, then the active force that bears of planet wheel 6 is larger, fragile, working life is shorter, therefore, multiple planet wheel 6 is preferably set, active force is shared by multiple planet wheel 6, thus improve the working life of planet wheel 6, simultaneously, multiple planet wheel 6 can be made to be uniformly distributed between the flank of tooth of ring gear 4 and sun gear 5, and housing 1 inwall arranges multiple planet wheel shaft, each planet wheel 6 one_to_one corresponding is arranged on each planet wheel shaft 6, make multiple planet wheel 6 uniform force, in addition, planet wheel 6 too much can make cost improve and be unfavorable for installing, and due to the limited space of ring gear 4, be difficult to arrange too much planet wheel 6, therefore, the quantity of planet wheel 6 can be 2 ~ 4, while the working life of improving planet wheel 6, be conducive to installing.
Described control can adopt the special device with controlling functions, such as, arrange and be specifically designed to the processor controlling described differential mechanism, but this can make cost raise, and be unfavorable for simplified structure, therefore.Described control gear can adopt the automatic transmission case control unit (TCU) of vehicle, thus the device of vehicle self can be utilized to realize controlling functions, is conducive to reducing costs, and need not arrange special device structure can be made to simplify further.
In order to simplified structure, be convenient to install, oil hydraulic cylinder 711 and housing 1 can be made one-body molded, and namely on the inwall of housing 1, straight forming goes out oil hydraulic cylinder 711.Thus, can simplified structure further, eliminate the process of installing oil hydraulic cylinder, be conducive to the installation process simplifying described differential mechanism.
Embodiment of the present utility model also provides a kind of Motor Vehicle, described Motor Vehicle is provided with the differential mechanism described in above-mentioned any embodiment, be provided with for the transmission shaft (not shown) to described differential mechanism transferring power in Motor Vehicle, described transmission shaft is provided with driving gear (not shown), described driving gear engages with described external toothing 103, the power of the motor (not shown) of described Motor Vehicle reaches housing 1 by the described driving gear of described transmission shaft and engagement and described external toothing 103, and housing 1 is rotated.Due to the differential mechanism that uses in the Motor Vehicle described in the present embodiment and above-mentioned differential mechanism embodiment described in differential mechanism identical, therefore, therefore the two can solve identical technical problem, and reaches identical Expected Results.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. a differential mechanism, comprise housing (1), left half axle (2) and right axle shaft (3), described housing (1) is rotatable, and described left half axle (2) and described right axle shaft (3) are all arranged with the coaxial of described housing (1), it is characterized in that, ring gear (4) is provided with in described housing (1), planet wheel (6) and sun gear (5) is provided with in described ring gear (4), described planet wheel is equipped with between the flank of tooth and described sun gear (5) of described ring gear (4), the inwall of described housing (1) is provided with planet wheel shaft (101), described planet wheel (6) is rotating to be sheathed on described planet wheel shaft (101), one end of described left half axle (2) to be arranged in described housing (1) and to be fixedly connected with described sun gear (5), one end of described right axle shaft (3) is fixedly connected with described ring gear (4).
2. differential mechanism according to claim 1, it is characterized in that, lockable mechanism (7) is provided with between the outer ring of described housing (1) and described ring gear (4), described lockable mechanism (7) comprises driven unit (71) and the first friction member (72) be oppositely arranged and the second friction member (73), described first friction member (72) and described second friction member (73) are positioned between the two side of described housing (1), described first friction member (72) is slidably connected on the internal surface of described housing (1), described second friction member (73) is slidably connected on described ring gear (4), described driven unit (71) can drive described first friction member (72) mobile, make described first friction member (72) and described second friction member (73) laminating and on the stacked sidewall being resisted against described housing (1), now, described housing (1) and described ring gear (4) can synchronous axial system.
3. differential mechanism according to claim 2, it is characterized in that, described drive unit (71) comprises oil hydraulic cylinder (711), piston (713) in Returnning spring (712) and described oil hydraulic cylinder (711), described oil hydraulic cylinder (711) is located on the inwall of described housing (1), described housing (1) is provided with the oil duct (102) be communicated with described oil hydraulic cylinder (711), one end of described Returnning spring (712) is connected with the inwall of described oil hydraulic cylinder (711), the other end is connected with described piston (713), when described first friction member (72) and described second friction member (73) laminating, described Returnning spring (712) is in extended state.
4. differential mechanism according to claim 3, it is characterized in that, described lockable mechanism (7) also comprises solenoid valve and hydrovalve, and described hydrovalve is for controlling the logical and disconnected of described oil duct (102), and described solenoid valve is for controlling the Kai Heguan of described hydrovalve.
5. differential mechanism according to claim 3, it is characterized in that, described first friction member (72) comprises the multiple steel discs (721) be arranged side by side, the internal surface of described housing (1) is provided with and is parallel to the first axial chute of described ring gear (4), described multiple steel disc (721) is equipped with in described first chute, described second friction member (73) comprises the multiple friction plates (731) be arranged side by side, the outer ring of described ring gear (4) is provided with and is parallel to the second axial chute of described ring gear (4), described multiple friction plate (731) is equipped with in described second chute, described multiple friction plate (731) is being parallel to the axial direction alternate of described ring gear (4) with described multiple steel disc (721).
6. the differential mechanism according to any one of claim 2 ~ 5, is characterized in that, also comprises:
First velocity package, for detecting the rotating speed of described left half axle (2);
Second velocity package, for detecting the rotating speed of described right axle shaft (3);
3rd velocity package, for detecting the rotating speed of described housing (1); And
Control gear, when described left half axle (2) is different with the rotating speed of described right axle shaft (3), and the rotating speed of described housing (1) is when being less than or equal to predetermined value, described control gear can control described driven unit (71) to be made described first friction member (72) mobile and fits with described second friction member (73).
7. differential mechanism according to claim 1, it is characterized in that, described planet wheel (6) has multiple, described multiple planet wheel (6) is uniformly distributed between the flank of tooth of described ring gear (4) and described sun gear (5), and described housing (1) inwall is provided with multiple planet wheel shaft (101), each described planet wheel (6) one_to_one corresponding is arranged on each described planet wheel shaft (101).
8. differential mechanism according to claim 6, is characterized in that, described control gear is the automatic transmission case control unit of vehicle.
9. differential mechanism according to claim 6, is characterized in that, described oil hydraulic cylinder (711) is one-body molded with described housing (1).
10. a Motor Vehicle, is characterized in that, described Motor Vehicle is provided with the differential mechanism as described in any one of claim 1 ~ 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520262370.2U CN204755825U (en) | 2015-04-28 | 2015-04-28 | Differential mechanism and motor vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520262370.2U CN204755825U (en) | 2015-04-28 | 2015-04-28 | Differential mechanism and motor vehicle |
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| CN204755825U true CN204755825U (en) | 2015-11-11 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108240420A (en) * | 2016-12-27 | 2018-07-03 | 比亚迪股份有限公司 | Drive shaft locking system and power-driven system and vehicle |
| CN108237904A (en) * | 2016-12-27 | 2018-07-03 | 比亚迪股份有限公司 | Drive shaft locking system and power-driven system and vehicle |
| CN108237908A (en) * | 2016-12-27 | 2018-07-03 | 比亚迪股份有限公司 | Drive shaft locking system and power-driven system and vehicle |
| CN108240418A (en) * | 2016-12-27 | 2018-07-03 | 比亚迪股份有限公司 | Drive shaft locking system and power-driven system and vehicle |
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