JPS5932751Y2 - Differential limited differential device - Google Patents

Description

[Detailed description of the invention] The Kono invention relates to a differential device for automobiles, especially a type of differential device equipped with a limited slip mechanism, and its purpose is to Provided is a differential limiting device that has a simpler structure than a differential device equipped with a differential limiting mechanism, and allows the common use of differential device components with differential devices that frequently require a differential limiting mechanism. It is to be.

Next, the configuration of this invention will be explained in detail according to the embodiments shown in the drawings.

In FIG. 1, which shows a part of an automobile differential device in cross section, the left and right sleeve-shaped portions of a differential case 1 are rotatably supported with respect to a differential carrier 2 by side bearings 3, respectively. .

Further, this case 1 is provided with a ring gear 4 on its outer periphery, and this ring gear 4 has a drive pinion 5 as is well known.
They mesh with each other so that torque can be transmitted between them.

Inside the case 1, left and right side gears 6 and a pair of pinion gears T that mesh with these side gears are incorporated.

The left and right axle shafts 8 are connected to the axis of both side gears 6 by mutual serrations, and both pinion gears 7 are rotatable about a pinion shaft 9 whose both ends are supported by the wall of the case 1. It is located in

Inside the case 1, in a space surrounded by both side gears 6 and pinion gear 1, a differential limiting member 10 having a generally cylindrical shape has both end surfaces 10 in contact with the end surfaces of the side gears 6. In other words, the member 10 and the side gear 6 are assembled so that their axis lines are in the same direction.

However, since the pinion shaft 9 passes through the space surrounded by both side gears 6 and the pinion gear T, a hole 12 is formed in the member 10 to allow the pinion shaft 9 to pass therethrough.

The inner diameter of this hole 12 is formed to be sufficiently larger than the outer diameter of the pinion shaft 9, and the shaft 9 is loosely inserted into the hole 12.

Now, as is clear from FIGS. 2 and 3, the differential limiting member 10 is divided into left and right elements 10A and IOB by a dividing surface 11 perpendicular to the 70-axis core line.

This dividing surface 11 alternately changes its inclination direction along the circumferential direction of the member 10.

The cam is set in a so-called shifter-like cam shape.

Due to the shape of this dividing surface 11, when both elements 10A and IOB rotate relative to each other, a component force is generated in the direction of separating them from each other along the axial direction.

Furthermore, recesses 13 are formed in two corresponding locations in the surface elements 10A and IOB in the axial direction from the mutual dividing surfaces 11, and the recesses 13 in the surface elements 10A and IOB are
A compression spring 14 is disposed between the two.

Due to the elasticity of this spring 14, the surface elements 10A, IO
Each end surface of B, that is, both end surfaces 10' of the member 10 are always pressed against the end surface of the side gear 6.

In the above configuration, the rotation of the drive pinion 5 shown in FIG. can be conveyed to.

In this case, when there is no difference in rotation between the left and right axle shafts 8, no differential movement occurs due to meshing rotation between the side gear 6 and the pinion gear 1, and both end surfaces 10' of the differential limiting member 10 and the end surface of the side gear 6 No relative sliding occurs between the two.

On the other hand, in a differential state where there is a difference in rotation between the left and right axle shafts 8, frictional sliding occurs between both end surfaces 10' of the member 10 and the end surface of the side gear 6.

Due to this frictional sliding, the left and right surface elements 10A and IOB forming the member 10 tend to rotate relative to each other, albeit slightly.

Due to the action of the dividing surface 11 during this relative rotation, a component force is generated in the direction of strongly pressing the surface elements 10A and IOB toward each side gear 6 as described above, and as a result, the surface elements 10
A.

A function to suppress the rotation difference between both side gears 6 through 10B,
In other words, the differential limiting function is performed.

As described above, the present invention utilizes the existing space in the differential case of a normal differential device and incorporates a member with a simple structure to obtain a differential limiting function. The structure is very simple, and most of the parts can be shared with a differential device that does not require differential restriction.

[Brief explanation of drawings]

The drawings show an embodiment of this invention; FIG. 1 is a sectional view showing a part of a vehicle differential device, FIG. 2 is a partially cutaway plan view showing only the differential limiting member enlarged; FIG. 3 is a sectional view taken along the line ■--■ in FIG. 2. 1...Differential case, 6...
...Side gear, 7...Pinion gear, 10.
... Differential eye member, IOA, IOB ... Left and right elements, 11 ... Division plane.

Claims (1)

[Scope of utility model registration request] Inside the differential case, the space surrounded by both the left and right side gears and a pair of pinion gears meshing with them has a cylindrical shape as a whole, and both end surfaces thereof are in friction-sliding contact with the end surfaces of the side gears. The differential limiting member assembled in this condition is divided into left and right elements by a dividing plane that is perpendicular to the axis of both the first and second gears, and this dividing plane is attached to the end face of the side gear by relative rotation of both elements. A differential limiting differential device characterized by being set in a cam shape that generates a component force in the direction of pushing down.