CN202091460U

CN202091460U - Transfer case equipped with center antislip differential

Info

Publication number: CN202091460U
Application number: CN2011201040474U
Authority: CN
Inventors: 王小刚
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-04-08
Filing date: 2011-04-08
Publication date: 2011-12-28
Anticipated expiration: 2021-04-08

Abstract

The utility model provides a transfer case equipped with a center antislip differential, including a case body fixedly connected to a gearbox, a main transmission shaft connected to the output end of the gearbox, and two main change-speed gears sleeved at the two ends of the external splines of the main transmission shaft. A joint sleeve is sleeved in the ring of a shifting fork. Two auxiliary change-speed gears are engaged with the main change-speed gears, a third worm shaft is rotationally cooperated with a first half-shaft worm gear, a fourth worm shaft is rotationally cooperated with a second half-shaft worm gear, the third worm shaft and the fourth worm shaft are reversely and intersectionally connected, the half-shaft worm gears are rotationally fixed in a casing, a half-shaft joint gear is rotationally fixed to the casing and the half-shaft worm gears and is provided with external splines same to that of the half-shaft worm gears and the casing, the half-shafts are connected to the half-shaft joint gear via the splines. The transfer case provided is applied on a 4-wheel driven car to respectively realize the functions of high gear, low gear, neutral, front-drive, rear-drive, four-drive and the four-drive locking of the center differential, moreover, the transfer case provided can dynamically distribute the front and rear powers and has an antislip self-locking function.

Description

The transfer case of limited slip differential in the middle of a kind of having

Technical field

The utility model field of mechanical technique, the transfer case of limited slip differential in the middle of particularly a kind of having.

Background technique

Transfer case is the main part that the 4 wheel driven automobile drives sedan-chair, its effect is in latter two semiaxis transferring power forward, and can realize that two drive or the effect of 4 wheel driven and auxiliary transmission, locking maybe can only be an AWD with 4 wheel driven but the transfer case that prior art provides can only drive two.

The model utility content

The utility model provides a kind of transfer case, can realize the function of differential mechanism in the middle of top gear, bottom gear, neutral, forerunner, rear-guard, 4 wheel driven and the 4 wheel driven locking respectively, front and back power dynamic assignment and anti-skidding auto-lock function is arranged

To achieve these goals, the utility model provides following technological scheme:

The transfer case of limited slip differential in the middle of a kind of having, it comprises: casing, intermediate portion have the main drive shaft of outside protrusion spline;

Rotating be enclosed within the main drive shaft two ends small one and large one and two mains of outside protrusion spline are arranged;

Two ends have the differential casing of outside protrusion spline and are fixed on little one big two the secondary speed change gears of one on the described differential casing, the 3rd modiolus and the 4th modiolus;

The two ends of described the 3rd modiolus and the 4th modiolus all are reverse helical gear or spiral gear, the centre of described the 3rd modiolus and the 4th modiolus all is a spiral gear, described two secondary speed change gears are meshed with described two mains, vertical and rotating being installed in the described differential casing of described the 3rd modiolus and the 4th modiolus;

This transfer case also comprises: circumferential surface is that half front axle gear, the circumferential surface of the outside protrusion spline of having of worm gear form is the back differential gear of the outside protrusion spline of having of worm gear form, the half front axle combination gear with outside protrusion spline, the back semiaxis combination gear with outside protrusion spline, front and back semiaxis, three ends slotting and three clutch collars dialled for going in ring;

Described casing and gearbox are fixedly linked, the output shaft of described main drive shaft and described gearbox is in transmission connection, described small one and large one two mains are enclosed within the two ends of described main drive shaft spline, and described two mains lean on a side of the spline of described main drive shaft to have the speed change gear spline;

Described clutch collar is provided with internal spline and is enclosed within described three and dials in the ring of inserting;

Described the 3rd modiolus and the first semiaxis worm gear be rotating to cooperate installing, described the 4th modiolus and the second semiaxis worm gear be rotating to cooperate installing, described the 3rd modiolus oppositely intersects with described the 4th modiolus and links to each other, described half front axle gear, differential gear is rotating is fixed in the described differential casing in the back, described half front axle engaging gear, later half be coupling close gear respectively with described half front axle gear, the rotating installing of back differential gear;

Described half front axle, back semiaxis close gear and are connected by the spline mode with described half front axle engaging gear, later half being coupling respectively.

Preferably, described the 3rd modiolus and the 4th modiolus are at least two, vertically be installed in uniformly the described first semiaxis worm gear and the second semiaxis worm gear around.

By implementing above technological scheme, have following technique effect: the transfer case that the utility model provides simple in structure, volume is little, can realize the function of differential mechanism in the middle of top gear, bottom gear, neutral, forerunner, rear-guard, 4 wheel driven and the 4 wheel driven locking respectively, front and back power dynamic assignment and anti-skidding auto-lock function is arranged.

Description of drawings

The sectional view of the transfer case that Fig. 1 provides for the utility model embodiment;

First turbine of the differential mechanism that Fig. 2 provides for the utility model embodiment and the constitutional diagram (side-looking) of the 3rd turbine;

Second turbine of the differential mechanism that Fig. 3 provides for the utility model embodiment and the constitutional diagram (side-looking) of the 4th turbine.

Embodiment

In order better to understand the technical solution of the utility model, describe the embodiment that the utility model provides in detail below in conjunction with accompanying drawing.

The utility model embodiment provides a kind of transfer case that has middle differential mechanism, and as Fig. 1, Fig. 2 and shown in Figure 3, this transfer case comprises: casing 121; The intermediate portion has the main drive shaft 118 of outside protrusion spline, rotating be enclosed within main drive shaft 118 two ends small one and large one and have two mains 116,117 of outside protrusion spline; Two ends have the differential casing 105 of outside protrusion spline and are fixed on the secondary speed change gear 114,115 that one on the housing 105 little is big and be meshed with described main 116,117; Vertical and rotating be installed in the described differential casing, two ends are to be the 3rd modiolus 103 of spiral gear and the 4th modiolus 104 (half of two ends wheel tooth degree=crossing angle in the middle of reverse helical gear or the spiral gear.As: 2 axles in every limit, crossing angle 90 degree, wheel tooth degree 45; 3 axles in every limit, crossing angle 120 degree, wheel tooth degree 60 degree; 4 axles in every limit, crossing angle 135 degree, wheel tooth degree 67.5 degree).Concrete, as shown in Figure 2, the helical gear of two ends 104-1, the 104-2 of described the 4th modiolus 104 or the tooth direction of spiral gear are opposite, are spiral gear in the middle of it; In like manner, the helical gear of two ends 103-1, the 103-2 of described the 3rd modiolus 103 or the tooth direction of spiral gear are opposite, are spiral gear in the middle of it.

This transfer case also comprises: circumferential surface is the front and back differential gear 101,102 of the outside protrusion spline of having of worm gear form, the front and back semiaxis engaging gear 106,107 with outside protrusion spline, 110,111, three ends of front and back semiaxis slotting 120,112,113 and three clutch collars 119,108,109 with internal spline of dialling for going in ring.

Casing 121 and gearbox are fixedly linked, main drive shaft 118 is connected with the output shaft of gearbox, main drive shaft 118 intermediate portions have outside protrusion spline, and small one and large one two mains 116,117 are enclosed within the two ends of main drive shaft spline and lean on a side of described main drive shaft spline to have the speed change gear spline identical with described main drive shaft spline.

Clutch collar 119 is provided with the internal spline that can be meshed with three splines (a main drive shaft spline and two main splines), and clutch collar 119 is enclosed within and dial inserts in 120,112,113 the ring.One little one big two secondary speed change gears 114,115 of fixing on the differential casing 105 are meshed with the main 116,117 on the main drive shaft 118, and differential casing 105 two ends also have outside protrusion spline.

Described the 3rd modiolus 103 and the first semiaxis worm gear 101 be rotating to cooperate installing, described the 4th modiolus 104 and the second semiaxis worm gear, 102 rotating installing, described the 3rd modiolus 103 and described 104 reverse intersections continuous (two ends that teeth directional is identical link to each other) of the 4th modiolus of cooperating.

Front and back differential gear 101,102 rotating being fixed in the housing 105, and these front and back differential gear 101,102 outsides have the spline identical with the housing spline, front and back semiaxis engaging gear 106,107 and housing 105 and differential gear 101,102 are rotating fixing, and front and back semiaxis engaging gear 106,107 has the spline identical with differential gear 101,102 and housing 105, and front and back semiaxis 110,111 and semiaxis engaging gear 106,107 are connected by the spline mode.

Main drive shaft 118 links to each other by speed change gear 114,115,116,117 with housing 105, drive housing 105 rotations, housing 105 drives differential gear 101,102 by the 3rd modiolus 103 the 4th modiolus 104 and rotates, and differential gear 101,102 drives semiaxis engaging gear 106,107 by clutch collar and semiaxis 110,111 rotations are advanced vehicle.

When clutch collar 119 engaged main drive shafts 118 and big main 116, power is delivered to little secondary speed change gear 114 through big main 116, and higher speed ratio is arranged was top gear.

When clutch collar 119 engaged main drive shafts 118 and little main 117, power is delivered to first mate's speed change gear 115 through little main 117, and lower speed ratio is arranged was bottom gear.

When 119 of clutch collars engaged main drive shaft 118 and discord main 116,117 joints, power can't transmit and be neutral gear.

Clutch collar 108 engage 105, differential gear 101, semiaxis engaging gear 106, when clutch collar 109 engage 105, differential gear 102, semiaxis engaging gear 107, housing 105, differential gear 101, semiaxis engaging gear 106 can't relatively rotate, housing 105, differential gear 102, semiaxis engaging gear 107 are linked to be integral body and can't relatively rotate, front and back semiaxis 110,111 is for locking state can't relatively rotate, and be differential mechanism pattern in the middle of the 4 wheel driven locking this moment.

Clutch collar 108 engages differential gear 101, semiaxis engaging gear 106, when clutch collar 109 engages differential gear 102, semiaxis engaging gear 107, differential gear 101, semiaxis engaging gear 106 and semiaxis 110 be linked to be that integral body can't relatively rotate and and housing 105 can relatively rotate, differential gear 102, semiaxis engaging gear 107 and semiaxis 111 be linked to be that integral body can't relatively rotate and and housing 105 can relatively rotate, semiaxis 110 and semiaxis 111 can relatively rotate, and be the AWD pattern this moment.

Clutch collar 108 engage 105, half front axle gear 101, half front axle engaging gear 106, when clutch collar 109 engage 105, back differential gear 102, back differential gear 111, semiaxis engaging gear 107 and housing 105, back differential gear 102 separate, housing 105, half front axle gear 101, half front axle engaging gear 106, back differential gear 102 are locked as a whole, power only passes to half front axle 110, and be the forerunner this moment.

Clutch collar 108 engage 105, half front axle gear 101, clutch collar 109 engage 105, back differential gear 102, later half being coupling when closing gear 107, half front axle 110, semiaxis engaging gear 106 and housing 105, half front axle gear 101 separate, housing 105, half front axle gear 101, back differential gear 102, later halfly be coupling that to close gear 107 locks as a whole, power only passes to back semiaxis 111, and be rear-guard this moment.

When vehicle was kept straight on, the front and back wheel rotating speed was identical under the AWD pattern, and inner each parts of differential mechanism do not have motion relatively, and vehicle advances smoothly.

Work as Ackermann steer angle under the AWD pattern, preceding sidecar wheel is faster than back sidecar wheel commentaries on classics, half front axle worm gear 101 motion clockwise when housing 105 rotates at this moment, back semiaxis worm gear 102 moves counterclockwise, half front axle worm gear 101 drives the 3rd modiolus 103 clockwise and rotates counterclockwise, back semiaxis worm gear 102 drives the 4th modiolus 104 counterclockwise and clockwise rotates, and the 3rd modiolus 103 relatively rotates clockwise with the 4th modiolus 104 counterclockwise, and vehicle is turned smoothly and advanced.

Under the AWD pattern when the vehicle front-wheel skids or is unsettled, preceding sidecar wheel quick rotation, back sidecar wheel stops operating, half front axle worm gear 101 clockwise quick rotation when housing 105 rotates at this moment, back semiaxis worm gear stops operating, half front axle worm gear 101 drives the 3rd modiolus 103 counterclockwise quick rotation clockwise, back semiaxis worm gear 102 and the 4th modiolus 104 stop operating, the 3rd modiolus 103 drives the 4th modiolus 104 counterclockwise and clockwise rotates, the 4th modiolus 104 drives back semiaxis worm gear 102 clockwise and rotates counterclockwise, but because the 3rd modiolus 103 drives the 4th modiolus 104 and the 4th modiolus 104 drive back semiaxis worm gears 102 have bigger frictional force, the worm and gear latching characteristics plays a role, thereby inner parts stop operating and driving force are delivered to non-slip rear wheel vehicle can be moved on.

That the transfer case that the utility model provides has is simple in structure, volume is little, can realize the function of differential mechanism in the middle of top gear, bottom gear, neutral, forerunner, rear-guard, 4 wheel driven and the 4 wheel driven locking respectively, front and back power dynamic assignment and anti-skidding auto-lock function is arranged.

Preferably, the 3rd modiolus and the 4th modiolus in the differential mechanism in the described transfer case be at least two, uniform vertically be installed in the described first semiaxis worm gear and the second semiaxis worm gear around.Described differential mechanism can be separately as before, during and after differential mechanism use and the differential mechanism of available other types substitutes.The housing of described differential mechanism, differential gear, semiaxis engaging gear be rotating to be fixedly linked and all to have outstanding spline and can engage the clutch collar of spline, the splined joint device at two ends can only select for use an end with realize two driving, the clutch collar of differential mechanism pattern and every end can be one or two in the middle of 4 wheel driven and the 4 wheel driven locking, clutch collar can substitute with devices such as clutches.

More than in the middle of a kind of having that the utility model embodiment is provided the transfer case of limited slip differential be described in detail, for one of ordinary skill in the art, thought according to the utility model embodiment, part in specific embodiments and applications all can change, in sum, this description should not be construed as restriction of the present utility model.

Claims

1. a transfer case that has middle limited slip differential is characterized in that comprise: casing, intermediate portion have the main drive shaft of outside protrusion spline;

Described three clutch collars are provided with internal spline and are enclosed within described three and dial in the ring of inserting;

2. the transfer case of limited slip differential in the middle of having according to claim 1 is characterized in that described the 3rd modiolus and the 4th modiolus be at least two, uniform vertically be installed in the described first semiaxis worm gear and the second semiaxis worm gear around.