CN211918274U - Differential case body and general differential case subassembly - Google Patents

Abstract

The utility model provides a general differential box body subassembly and differential box body, wherein differential box body includes a drive assembly connecting portion, a car axle connector and is located the axle connector with a mounting disc between the drive assembly connecting portion, the axle connector further including be formed in the first portion of dodging of first link with be formed at the second of second link dodges the portion, first dodge the portion with the second dodges the portion, the mounting disc including prominently formed in the mounting disc edge region just corresponding to respectively corresponding to first link with the groove is dodged to the first groove of dodging and the second of second link dodges the groove. General differential box can install in integral type axle and split type axle simultaneously, compares with traditional differential and has stronger compatibility.

Description

Differential case body and general differential case subassembly

Technical Field

The utility model relates to a motor differential box field further relates to differential box main part and general differential box subassembly.

Background

The differential is an essential device in vehicle running and has very important function in the turning process of vehicles such as electric tricycles, automobiles and the like. It can be understood that when the vehicle turns, the turning radius of the inner wheel and the turning radius of the outer wheel are different, the turning radius of the outer wheel is larger than that of the inner wheel, and the differential mechanism can meet the condition that the rotating speed of the outer wheel is higher than that of the inner wheel when the vehicle turns, so that the vehicle can smoothly pass through a curve.

In practice, a differential is usually mounted on the axle of a vehicle and is capable of transmitting the driving force generated by a driving device to a propeller shaft on the axle, so that the driving device can drive the rotating shaft of the axle to rotate differentially.

The axle divide into integral type axle and split type axle two kinds, and correspondingly, traditional differential mechanism also divide into two kinds, and one kind differential mechanism is in the adaptation of integral type axle, and another kind is in split type axle. Because the difference of integral type axle and split type axle structure, the structure that is applied to the traditional differential mechanism of integral type axle and the traditional differential mechanism that is applied to split type axle also has certain difference, leads to the traditional differential mechanism who is applicable to the integral type axle can not be applicable to split type axle, and the traditional differential mechanism who is applicable to split type axle can not be applicable to the integral type axle. No matter the differential mechanism suitable for the integrated axle is damaged or the differential mechanism suitable for the split axle is damaged, special differential mechanism replacement needs to be purchased, and great inconvenience is caused to a user in the using process.

In view of the foregoing, there is a need for improvements in conventional differentials.

SUMMERY OF THE UTILITY MODEL

An advantage of the utility model is that a differential box main part and general differential box subassembly are provided, wherein general differential box can be applicable to integral type axle and split type axle respectively, compares with traditional differential mechanism and has stronger compatibility.

Another advantage of the present invention is to provide a differential case body and a general differential case assembly, by changing the dimensional design of the axle connector of the differential case body for reducing the circumscribed circle size of the axle connector, so that the axle connector can be installed in the integral axle.

The utility model discloses a differential box main part and general differential box subassembly are provided to another advantage, through changing the structure of mounting disc to the space is dodged for the installation of the first axle and the second axle of split type axle provides, makes split type axle first axle with the second axle can be installed in the both ends of axle connector.

Another advantage of the present invention is to provide a differential case body and general differential case subassembly, wherein the general differential case body includes a first fitting piece, the first fitting piece be suitable for be installed in the mounting disc between the mounting groove perisporium of dodging groove perisporium and integral type axle, it is right to supply dodge the groove perisporium with clearance between the mounting groove perisporium is sealed.

Another advantage of the present invention is to provide a differential case body and general differential case assembly, wherein the general differential case further includes a second fitting piece, the second fitting piece is adapted to be installed in dodge the portion, increase split type axle with the stability of connecting between the split type axle.

Correspondingly, in order to realize above at least one utility model purpose, the utility model provides a differential case main part, include:

a drive assembly connection configured to connect a drive assembly;

an axle connector configured to connect an integral axle or a split axle, wherein the integral axle includes a mounting slot having a first diameter, the split axle includes a first axle having a first coupling end and a second axle having a second coupling end;

the mounting disc is arranged between the axle connector and the driving assembly connecting part;

the axle connector comprises a first connecting end and a second connecting end opposite to the first connecting end, the mounting disc comprises a first avoidance groove and a second avoidance groove which are protrudingly formed in the edge area of the mounting disc and correspond to the first connecting end and the second connecting end respectively, when the axle connector is configured to connect the split axle, the first connecting end is configured to be connected with the first coupling end of the first axle, the first avoidance groove is configured to avoid the first coupling end from being matched with the mounting disc, the second connecting end is configured to be matched with the second coupling end of the second axle, and the second avoidance groove is configured to avoid the second coupling end from being matched with the mounting disc;

the axle connector further comprises a first avoiding portion formed at the first connecting end and a second avoiding portion formed at the second connecting end, and the diameters of the axle connector at the first connecting end and the second connecting end are smaller than the first diameter through the first avoiding portion and the second avoiding portion, so that the axle connector can be contained in the mounting groove of the integrated axle in a matched mode, and the axle connector can be connected to the integrated axle.

In some preferred embodiments of the present invention, the first connecting end is provided with a first mounting surface for being mated with the first coupling end, the first avoiding portion includes first recesses respectively formed on both sides of a center line set by the first mounting surface, wherein the second connecting end is provided with a second mounting surface for being mated with the second coupling end, and the second avoiding portion includes second recesses respectively formed on both sides of a center line set by the second mounting surface.

In some preferred embodiments of the present invention, the first recess is symmetrically formed on both sides of a center line set by the first mounting surface, and/or the second recess is symmetrically formed on both sides of a center line set by the second mounting surface.

In some preferred embodiments of the present invention, two first included angles set between the outer surfaces of the two first recesses and the first mounting surface are equal, and/or two second included angles set between the outer surfaces of the two second recesses and the second mounting surface are equal.

In some preferred embodiments of the present invention, the first angle and the second angle are equal.

In some preferred embodiments of the present invention, the outer surface of the first recess is planar, and/or the outer surface of the second recess is planar.

In some preferred embodiments of the present invention, the outer surface of the first recess is a cambered surface, and/or the outer surface of the second recess is a cambered surface.

In some preferred embodiments of the present invention, the radius of curvature of the outer surface of the first recess is equal to the first diameter, and/or the radius of curvature of the outer surface of the second recess is equal to the first diameter.

According to the utility model discloses an on the other hand, the utility model discloses a general differential box subassembly is further provided, include:

the differential case body as described above;

a first mating member configured to: when the axle connector is connected to the integrated axle, the first fitting piece is respectively and adaptively arranged in a gap formed between the first avoidance groove and the second avoidance groove of the mounting disc and the peripheral wall of the mounting groove of the integrated axle; and

a second mating element configured to: when the axle connector is connected to the split axle, the second mating piece is respectively mounted on the first avoiding portion and the second avoiding portion, so that the first mounting surface and the second mounting surface are flat surfaces, the first connecting end can be configured to be connected with the first coupling end of the first axle, and the second connecting end can be configured to be matched with the second coupling end of the second axle.

According to another aspect of the present invention, the present invention further provides a method for installing a universal differential case assembly, wherein the universal differential case assembly comprises a differential case body, a first fitting member and a second fitting member,

when the universal differential case assembly is mounted to an integrated axle, the method comprises:

mounting the first fitting piece on the peripheral wall of the mounting groove of the integrated axle;

installing the axle connector of the box body main body in the installation groove of the integrated axle; and

fixing the box body on the peripheral wall of the mounting groove of the integrated axle;

when the universal differential case assembly is mounted to a split axle, the method comprises:

mounting a second fitting piece on a first avoidance part and a second avoidance part which are formed on a first connecting end and a second connecting end of the axle connecting head; and

and respectively installing a first axle and a second axle at the first connecting end and the second connecting end of the axle connector.

Other objects and advantages of the present invention will become apparent from the following detailed description and claims.

Drawings

Fig. 1 is a block diagram schematically illustrating a vehicle according to a preferred embodiment of the present invention.

Fig. 2 is a schematic perspective view of a universal differential case according to a preferred embodiment of the present invention.

Fig. 3 is a perspective view of a universal differential case according to a preferred embodiment of the present invention.

Fig. 4 is a schematic front view of a universal differential case according to a preferred embodiment of the present invention.

Fig. 5 is a side view schematically illustrating a general differential case according to a preferred embodiment of the present invention.

Fig. 6 is a schematic view of the bottom structure of a universal differential case according to a preferred embodiment of the present invention.

Fig. 7 is a schematic view of the overall structure of the universal differential case applied to the integrated axle according to a preferred embodiment of the present invention.

Fig. 8 is an enlarged schematic view of a portion of the structure of a universal differential case applied to an integrated axle according to a preferred embodiment of the present invention.

Fig. 9 is an exploded view of a preferred embodiment universal differential case according to the present invention applied to an integral axle.

Fig. 10 is a schematic view of the overall structure of the universal differential case applied to the split axle according to a preferred embodiment of the present invention.

Fig. 11 is a partially enlarged structural schematic view of the universal differential case applied to a split axle according to a preferred embodiment of the present invention.

Fig. 12 is an exploded view of a universal differential case according to a preferred embodiment of the present invention applied to a split axle.

Fig. 13 is a schematic view of the installation process of the universal differential case to the integrated axle according to a preferred embodiment of the present invention.

Fig. 14 is a schematic view of the installation process of the universal differential case to the split axle according to a preferred embodiment of the present invention.

Fig. 15 is a schematic vertical cross-sectional view of a universal differential case applied to an integrated axle according to a preferred embodiment of the present invention.

Fig. 16 is an enlarged partial schematic view of a vertical cross-sectional view of a universal differential case applied to an integral axle in accordance with a preferred embodiment of the present invention.

Fig. 17 is a schematic vertical cross-sectional view of a universal differential case applied to a split axle according to a preferred embodiment of the present invention.

Fig. 18 is an enlarged partial schematic view of a universal differential case according to a preferred embodiment of the present invention applied to a vertical cross-sectional view of a split axle.

Fig. 19 is a schematic horizontal cross-sectional view of a universal differential case applied to an integrated axle according to a preferred embodiment of the present invention.

Fig. 20 is a schematic diagram showing a comparison of the minimum outer races of the structure provided with the escape portion and the structure not provided with the escape portion in accordance with a preferred embodiment of the present invention.

Fig. 21 is a schematic view of the first fitting of the universal differential case according to a preferred embodiment of the present invention.

Fig. 22 is a schematic view of the second fitting of the universal differential case according to a preferred embodiment of the present invention.

Fig. 23 is a schematic view of the second fitting of the universal differential case according to a preferred embodiment of the present invention.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents and other technical solutions without departing from the spirit and scope of the invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, as the terms are used in the description to indicate that the referenced device or element must have the specified orientation, be constructed and operated in the specified orientation, and not for the purpose of limitation.

It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.

Referring to fig. 1 to 23 of the specification, the present invention provides a universal differential case 100, which can be applied to an integrated axle 200 and a split axle 300 of a conventional vehicle without changing the structure of the integrated axle 200 and the split axle 300, and has a better compatibility compared to the conventional differential case.

Referring to fig. 1 of the specification, in particular, the present invention provides a universal differential case 100 capable of transmitting a driving force generated by a driving assembly 400 of a vehicle 1000 to two transmission shafts of the integrated axle 200 or the split axle 300, and capable of differentially rotating the two transmission shafts of the integrated axle 200 or the split axle 30. Preferably, the vehicle 1000 is an electric vehicle and the drive assembly 400 is an electric motor. It will be appreciated by those skilled in the art that the vehicle 1000 can also be a fuel-powered automobile, and the drive assembly 400 is an engine. The type of vehicle 1000 and drive assembly 400 should not constitute a limitation of the present invention.

Further, the present invention provides the universal differential case 100 including a differential case body 10, a set of second fitting members 20 and a set of first fitting members 30. The second mating member 20 is adapted to mate with the differential case body 10 to mount the differential case body 10 to the split axle 300. The first fitting member 30 is adapted to fit with the differential case body 10 to mount the differential case body 10 to the one-piece axle 200.

The differential case body 10 further includes a driving assembly connecting portion 11 and a vehicle axle connecting portion 12, the driving assembly connecting portion 11 is adapted to be drivably connected to the driving assembly 400, and the axle connecting portion 12 is adapted to be drivably connected to the two transmission shafts of the split axle 300 or the integrated axle 200.

The differential case body 10 further has a driving hole 110 formed in the driving-component connecting portion 11, and the driving shaft of the driving component 200 is adapted to be drivably mounted in the driving hole 110 such that the driving component 400 is drivably connected to the driving-component connecting portion 11 of the differential case body 10.

The differential case body 10 further has a differential hole 120 formed in the axle connector 12, and the two transmission shafts of the integrated axle 200 or the split axle 300 are respectively adapted to be drivably mounted at both ends of the differential hole 120, so that the integrated axle 200 or the split axle 300 is drivably connected to the axle connector 12 of the differential case body 10.

Specifically, the axle connector 12 further has a first connection end 121 and a second connection end 122 corresponding to the first connection end 121, the differential hole 120 penetrates through the first connection end 121 and the second connection end 122, and the two transmission shafts of the integrated axle 200 or the split axle 300 are respectively adapted to be mounted at the first connection end 121 and the second connection end 122.

The differential case body 10 further has a set of avoiding portions 123 formed at the first connection end 121 and the second connection end 122 of the axle connector 12, and the avoiding portions 123 are used for reducing the volume of the axle connector 12 of the differential case body 10, so that an avoiding space is formed when the axle connector 12 is mounted on the integrated axle 200, and the axle connector 12 of the differential case body 10 can be mounted on the integrated axle 200.

Preferably, the number of the avoiding portions 123 is four, two avoiding portions 123 are formed at the first connecting end 121 of the axle connector 12, the other two avoiding portions 123 are formed at the second connecting end 122 of the axle connector 12, and the four avoiding portions 123 are symmetrical with respect to the center of the axle connector 12.

Referring to the specification 20, a schematic view of a bottom surface of the axle connector 12 of the differential case body 10 is shown, wherein a circle 1 represents a circumscribed circle or an arc of the axle connector 12 having the avoiding portion 123, and a circle 2 represents a circumscribed circle or an arc of the axle connector 12 not having the avoiding portion 123, so that it can be found that when the avoiding portion 123 is formed at the first connecting end 121 and the second connecting end 122 of the axle connector 12, a diameter of a minimum circumscribed circle or an arc of the axle connector 12 becomes smaller, so that the axle connector 12 of the differential case body 10 can be mounted in a mounting groove of the integrated axle 200 without changing a size of the mounting groove of the integrated axle 200.

Referring to fig. 19 of the specification, a cross-sectional structure view of the axle connector 12 of the differential case body 10 mounted in a mounting groove 201 of the one-piece axle 200 is shown. Axle connector 12 of differential case body 10 forms dodge portion 123 can be in the space is dodged in formation around the axle connector 12 to can be in not changing integral type axle 200 under the condition of the size of mounting groove 201 will differential case body 10 axle connector 12 install in integral type axle 200 in the mounting groove 201.

Specifically, the first connection end 121 of the axle connector 12 has a first mounting surface 1211 and a first avoiding portion 1212, and the first avoiding portion 1212 includes two first recesses respectively formed on two sides of a center line L1 defined by the first mounting surface 1211.

The second connecting end 122 of the axle connector 12 has a second mounting surface 1221 and a second avoidance portion 1222, and the second avoidance portion 1222 includes two second recesses respectively formed on both sides of a center line L2 defined by the second mounting surface 1221.

It will be appreciated by those skilled in the art that in other preferred embodiments of the present invention, an escape portion may also be provided only at one end of the axle connector 12, and not at the other end.

Specifically, the diameter of the mounting groove 201 is a first diameter, and the diameter of the axle connector 12 at the first avoiding portion 1212 and the second avoiding portion 1222 is smaller than the first diameter of the mounting groove 201, so as to allow the axle connector 12 to be fittingly received in the mounting groove 201 of the integrated axle 200, so that the axle connector 12 can be connected to the integrated axle.

Preferably, the radius of curvature of the outer surface of the first recess is equal to the first diameter, and/or the radius of curvature of the second recess is equal to the first diameter.

Preferably, in the present preferred embodiment, the first relief portion 1212 formed at the first connection end 121 and the second relief portion 1222 formed at the second connection end 122 are respectively planar, so that the relief portion 123 can be easily formed. It should be understood by those skilled in the art that the first avoiding portion 1212 and the second avoiding portion 1222 can also be curved facets. The specific cross-sectional shapes of the first avoiding portion 1212 and the second avoiding portion 1222 should not limit the present invention.

Further, a first included angle is formed between the outer surface of each of the two first recesses of the first avoiding portion 1212 and the first mounting surface 1211, so as to control the size of the avoiding portion 123, so that the axle connector 12 can be mounted in the mounting groove 200 of the integrated axle 200 without affecting the performance of the axle connector 12. Accordingly, two second recesses of the second avoiding portion 1222 have a corresponding second included angle with the second mounting surface 1221. Preferably, the first connection end 121 and the second connection end 122 of the axle connector 12 are symmetrical to each other, and the first included angle is equal to the second included angle. It should be understood by those skilled in the art that in other embodiments, the first angle between the first recesses of the first avoiding portion 1212 and the first mounting surface 1211 and the second angle between the second recesses of the second avoiding portion 1222 and the second mounting surface 1221 can be implemented as different angles.

Preferably, an intersection line between a plane where the two first recesses of the first avoiding portion 1212 are located and the first mounting surface 1211, and an intersection line between the two second recesses of the second avoiding portion 1222 and the second mounting surface 1221 are parallel to a straight line where the height of the axle connector 12 is located. It can be understood that, since four avoidance portions 123 are respectively disposed at four corners of the axle connector 12, and the first avoidance portion 1212 and the second avoidance portion 1222 of the avoidance portions 123 are respectively disposed along the height direction of the axle connector 12, the axle connector 12 can be vertically mounted in the mounting groove 201 of the integrated axle 200 along the depth direction of the mounting groove 201. In other words, the plane of the first avoiding portion 1212 and the second avoiding portion 1222 is parallel to the straight line of the center of the axle connector 12 and the driving assembly connecting portion 11.

Further, the differential case body 10 further includes a mounting plate 13, the mounting plate 13 is located between the driving assembly connecting portion 11 and the axle connector 12, and the circumferential dimension of the mounting plate 13 is greater than the circumferential dimension of the axle connector 12. In other words, when the axle-coupling head 12 of the differential case body 10 is mounted in the mounting groove 201 of the one-piece axle 200, the mounting plate 13 is located outside the mounting groove 201 and contacts the peripheral wall of the mounting groove 201 to fix the differential case body 10 to the one-piece axle 200 and to retain the axle-coupling head 12 in the mounting groove 201 of the one-piece axle 200.

Preferably, the mounting disc 13 of the differential case 10 is in the shape of a circular plate, and when the axle connector 12 of the differential case body 10 is installed in the mounting groove 201 of the integrated axle 200, the mounting disc 13 can surround and cover the peripheral wall of the mounting groove 201 to shield the gap between the mounting groove 201 and the axle connector 12, so as to prevent external sundries from entering the integrated axle 200 in the mounting groove 201, improve the stability of connection between the axle connector 12 and the integrated axle 200.

On the other hand, the mounting disk 13 in the form of an annular plate can also be fixedly attached to the peripheral wall of the mounting groove 201 of the one-piece axle 200 for mounting the differential case body 10 to the one-piece axle 200. It should be understood by those skilled in the art that the mounting plate 13 of the differential case body 10 can also be embodied in other shapes as long as the objects of the present invention can be achieved, and the specific shape of the mounting plate 13 of the differential case body 10 should not constitute a limitation of the present invention.

Preferably, the common differential case 100 further includes a set of first fixing members 40, the first fixing members 40 being provided for fixing the mounting plate 13 of the differential case body 10 to the peripheral wall of the mounting groove 201 of the one-piece axle 200. Preferably, the first fixing members 40 are screws, the peripheral walls of the mounting disk 13 and the mounting groove 201 of the differential case body 10 are provided with screw holes adapted to the screws, and the first fixing members 40, which are implemented as screws, are adapted to pass through the screw holes of the peripheral walls of the mounting disk 13 and the mounting groove 201 to fix the differential case body 10 to the axle 200.

Accordingly, the mounting plate 13 of the differential case body 10 further has a set of first fixing holes 130, and the first fixing members 40, which are implemented as screws, are adapted to be fitted through the first fixing holes 130 and into the screw holes in the peripheral wall of the mounting groove 201 to mount the differential case body 10 to the integrated axle 200.

Preferably, the number of the first fixing holes 130 of the mounting plate 13 of the differential case body 10 is four, and the four first fixing holes 130 are uniformly distributed in the mounting plate 13. Accordingly, the number of the first fixing members 40 is four, the number of the screw holes on the peripheral wall of the mounting groove 201 is also four, and the distribution of the positions of the screw holes on the peripheral wall of the mounting groove 201 is adapted to the distribution of the positions of the first fixing holes 130 on the mounting plate 13.

The mounting plate 13 of the differential case body 10 includes two escape grooves 131 protrudingly formed in an edge area thereof and corresponding to the first connection end 121 and the second connection end 122, respectively. Specifically, the avoiding groove 131 corresponding to the first connection end 121 is a first avoiding groove, and the avoiding groove 132 corresponding to the second connection end 122 is a second avoiding groove. Two the straight line that dodges groove 131 place with axle connector 12 the axis in differential hole 120 is parallel, and two dodge the opening direction orientation of groove 131 axle connector 12. In other words, one of the avoiding grooves 131 is on the same side as the first connecting end 121 of the axle connector 12, and the other avoiding groove 131 is on the same side as the second connecting end 122 of the axle connector 12.

The split axle 300 includes a first axle 301 and a second axle 302 corresponding to the first axle 301, wherein the first axle 301 has a first coupling end 3011, and the second axle 302 has a second coupling end 3021. The first coupling end 3011 is adapted to mate with the first mounting surface 1211 of the first connection end 121, and the second coupling end 3012 is adapted to mate with the first mounting surface 1221.

When the first axle 301 and the second axle 302 of the split axle 300 are mounted to the first connection end 121 and the second connection end 122 of the axle connector 12, the avoiding groove 131 is used to accommodate at least a portion of the first coupling end 3011 and/or the second coupling end 3021 of the split axle 300, providing a mounting space for the first axle 301 and the second axle 302 of the split axle 300 to be mounted to the first connection end 121 and the second connection end 122 of the axle connector 12, so that the through-hole differential case 100 is mounted to the split axle 300 without changing the structure of the split axle 300.

The common differential case 100 further includes a set of second fasteners 50, and the second fasteners 50 are configured to fixedly mount the first axle 301 and the second axle 302 of the split axle 300 to the first connection end 121 and the second connection end 122 of the axle connector 12.

Accordingly, the first connecting end 121 and the second connecting end 122 of the axle 12 are respectively provided with a set of second fixing holes 124, and the two sets of second fixing holes 124 are respectively adapted to cooperate with the second fixing members 50 to fixedly mount the first axle 301 and the second axle 302 of the split axle 300 to the differential case body 10.

Preferably, the second fixing member 50 is a screw, the second fixing hole 124 is a screw hole adapted to the second fixing member 50 implemented as a screw, and the second fixing member 50 implemented as a screw is adapted to cooperate with the second fixing hole 124 implemented as a screw hole to fixedly mount the first axle 301 and the second axle 302 of the split axle 300 to the first connection end 121 and the second connection end 122 of the axle connector 12.

Preferably, the first connecting end 121 and the second connecting end 122 of the axle connector 12 are respectively provided with the second fixing holes 124, and the second fixing holes 124 are uniformly distributed. Accordingly, the first and second coupling ends 3011 and 3021 of the split axle 300 have through holes corresponding to the second fixing holes 124, and the second fixing member 50 implemented as a screw is adapted to pass through the through hole of the differential mounting end 3011 to be connected with the second fixing hole 124, so as to fixedly mount the first and second axles 301 and 302 of the split axle 300 to the first and second connection ends 121 and 122 of the axle connector 12.

Referring to fig. 7 and 8 of the specification, since the mounting plate 13 has one avoidance slot 131 at each of the first connection end 121 and the second connection end 122 of the axle connector 12, when the first axle 301 and the second axle 302 of the split axle 300 are mounted at the first connection end 121 and the second connection end 122 of the axle connector 12, the avoidance slot 131 can accommodate at least a portion of the first coupling end 3011 or the second coupling end 3021 for mounting the universal differential case 100 to the split axle 300 without changing the structure of the existing axle of the existing split axle 300.

It will be understood by those skilled in the art that in order to mount the axle connector 12 of the differential case body 10 to the mounting groove 201 of the one-piece axle 200, four escape portions 123 are formed at the first and second connection ends 121 and 122 of the axle connector 12, so that the axle connector 12 of the differential case body 10 is mounted to the one-piece axle 200 without changing the design of the existing one-piece axle 200. When the common differential case 10 is mounted on the split axle 300, the avoiding portion 123 may affect the stability of the connection between the first axle 301 and the second axle 302 of the split axle 300 and the first connecting end 121 and the second connecting end 122 of the axle connector 12. The second mating member 20 is disposed to fill the avoiding portion 123 of the first connection end 121 and the second connection end 122 of the axle connector 12, so as to improve the connection stability between the first axle 301 and the second axle 302 of the split axle 300 and the first connection end 121 and the second connection end 122 of the axle connector 12.

Accordingly, the number of the second mating parts 20 is four, which is adapted to the number and shape of the escape portions 123 of the axle connector 12. Each of the avoiding portions 123 of the axle connector 12 is adapted to be provided with one of the second mating members 20.

Specifically, the second mating member 20 has a coupling surface 21, a plane 22 and a side surface 23, and the shape of the coupling surface 21 is adapted to the shape and size of the first avoiding portion 1212 and the second avoiding portion 1222 of the avoiding portion 123. When the second mating element 20 is mounted to the avoiding portion 123 of the axle connector 12, the engaging surface 21 of the second mating element 20 is attached to the first avoiding portion 1212 or the second avoiding portion 1222, and the plane 22 and the first mounting surface 1211 or the second mounting surface 1221 are located on the same plane to form a mounting plane for mounting the first axle 301 and the second axle 302 of the split axle 300.

It can be understood by those skilled in the art that when the second mating element 20 is mounted at the position of the avoiding portion 123 of the axle connector 12, the plane 22 of the second mating element 20 can be located in the same plane as the first mounting surface 1211 or the second mounting surface 1221 of the axle connector 12 and respectively contact with the first axle 301 and the second axle 302 of the split axle 300, so that the connection stability between the first axle 301 and the second axle 302 of the split axle 300 and the first connection end 121 and the second connection end 122 of the axle connector 12 can be improved.

Further, the second mating member 20 further has a first engaging member 24 formed on the combining surface 21, and the first engaging member 24 extends outward from the combining surface 21 of the second mating member 20 to allow the second mating member 20 to be engaged with the first avoiding portion 1212 of the first connecting end 121 and/or the second avoiding portion 1222 of the second connecting end 122, so that the first axle 301 and the second axle 302 of the split axle 300 can be mounted on the axle connector 12 of the differential case body 10.

Accordingly, the first avoiding portion 1212 of the first connecting end 121 of the axle connector 12 and the second avoiding portion 1222 of the second connecting end 122 respectively have an engaging groove 125 corresponding to the engaging element 24, and the engaging element 24 of the second fitting element 20 is adapted to be engaged in the engaging groove 125, so as to pre-fix the second fitting element 20 to the first connecting end 121 and/or the second connecting end 122 of the axle connector 12. It is understood that, in other preferred embodiments, the engaging groove 125 formed in the first avoiding portion 1212 of the first connecting end 121 and the second avoiding portion 1222 of the second connecting end 122 can also be implemented as a second engaging member 24, and the second engaging member 24 is matched with the first engaging member 24 formed on the combining surface 21 of the second fitting member 20, so as to pre-mount the second fitting member 20 to the first connecting end 121 and/or the second connecting end 122 of the axle connector 12. It should be understood by those skilled in the art that the specific installation manner between the second mating element 20 and the first connection end 121 and the second connection end 122 of the axle connector 12 should not be construed as limiting the present invention.

Preferably, the first avoiding portion 1212 of the first connection end 121 and the second avoiding portion 1222 of the second connection end 122 each have at least one second fixing hole 124, and preferably, the first avoiding portion 1212 of the first connection end 121 and the second avoiding portion 1222 of the second connection end 122 each have one second fixing hole 124.

Further, the second fitting member 20 further has at least one through fitting hole 25, and the fitting hole 25 penetrates through the second fitting member 20. The shape and size of the fitting hole 25 are adapted to the shape and size of the first avoiding portion 1212 and/or the second avoiding portion 1222, and when the second fitting member 20 is disposed in the first avoiding portion 1212 and/or the second avoiding portion 1222, the position of the fitting hole 25 corresponds to the position of the fitting hole formed in the first avoiding portion 1212 and/or the second avoiding portion 1222. The second fixing member 50 is adapted to pass through the mating hole 25 formed in the second mating member 20, the second fixing hole 124 formed in the first avoiding portion 1212 and/or the second avoiding portion 1222, and the screw holes formed in the first axle 301 and the second axle 302 of the split axle 300, so as to fixedly mount the first axle 301 and the second axle 302 of the split axle 300 to the first connecting end 121 and the second connecting end 122 of the axle connector 12. It will be appreciated that the provision of the mating hole 25 in the second mating piece 20 can improve the stability of the connection of the second mating piece 20 between the axle connector 12 and the first axle 301 and the second axle 302 of the split axle 300. It will be appreciated by those skilled in the art that in other embodiments, the number of the fitting holes 25 formed on the second fitting member 20 can be multiple, and the number of the fitting holes 25 formed on the second fitting member 20 should not be construed as a limitation of the present invention as long as the objects of the present invention can be achieved. In other embodiments of the present invention, the second mating element 20 may not be formed into the mating hole 25, so that the second mating element 20 is retained by the axle connector 12 and the split axle 300 by the pressing force between the first axle 301 and the second axle 302, and this should not be construed as a limitation of the present invention.

Referring to the specification to fig. 14, there is shown a schematic view of the process of mounting the universal differential case 100 provided by the present invention to the split axle 300. In the process of mounting the universal differential case 100 to the split axle, the second mating piece 20 is first mounted to the first connecting end 121 and the second connecting end 122 of the axle connector 12 of the differential case body 10. Then, the first axle 301 and the second axle 302 of the split axle 300 are mounted to the first connection end 121 and the second connection end 122 of the axle connector 12, so that the universal differential case 100 can be mounted to the split axle 300.

Specifically, in the process of mounting the second mating element 20 on the first connection end 121 and the second connection end 122 of the axle connector 12, the joint surface 21 of the second mating element 20 is attached to the first avoiding portion 1212 and the second avoiding portion 1222 of the first connection end 121, so that the plane 22 of the second mating element 20 and the first mounting surface 1211 of the first connection end 121 or the second mounting surface 1221 of the second connection end 122 are located in the same plane, so as to facilitate mounting of the first axle 301 and the second axle 302 of the split axle 300.

Further, after the first axle 301 and the second axle 302 of the split axle 300 are mounted on the first connection end 121 and the second connection end 122 of the axle connector 12, the first axle 301 and the second axle 302 of the split axle 300 are fixed on the first connection end 121 and the second connection end 122 of the axle connector 12 by the second fixing member 50.

Referring to the attached drawing 13 of the specification, when the general differential case 100 is installed on the integrated axle 200, the first fitting member 30 is suitable for being disposed between the peripheral walls of the mounting plate 13 and the mounting groove 201 of the integrated axle 200 of the differential case body 10, so as to be filled with two of the avoiding grooves 131 formed on the mounting plate 13 of the differential case body 10, thereby preventing external impurities from entering the mounting groove 201 of the integrated axle 200 from the avoiding grooves, and improving the stability of the fit between the general differential case 100 and the integrated axle 200.

Referring to fig. 21 in the specification, specifically, the first fitting member 30 includes a pre-fixing member 31 and a sealing member 32, and the pre-fixing member 31 extends outward from one side of the sealing member 32. Preferably, the pre-fixing member 31 is integrally formed from the sealing member 32.

The integrated vehicle axle 200 further has a set of pre-assembled parts formed on the peripheral wall of the mounting groove 201 at the side of the peripheral wall of the mounting groove 210 where the mounting groove 201 is open. The pre-fixing member 31 of the first fitting member 30 is adapted to be provided at the pre-fitting portion of the peripheral wall of the mounting groove 201 of the integrated axle 200 for pre-fitting the first fitting member 20. Preferably, the pre-mount portion formed at the peripheral wall of the mounting groove 201 of the one-piece axle 200 is a through hole, and the pre-mount 31 of the first fitting member 30 is adapted to be provided at the pre-mount portion implemented as a through hole for pre-fixing the first fitting member 30.

Referring to the specification fig. 13, there is shown a schematic view of the process of mounting the universal differential case 100 provided by the present invention to the integrated axle 200. Specifically, in the process of mounting the common differential case 100 to the integrated axle 200, first, the first fitting member 30 is mounted to the mounting groove 201 peripheral wall of the integrated axle 200; then, the axle-connecting head 12 of the differential case body 10 is mounted in the mounting groove 201 of the one-piece axle 200 such that the first fitting member 30 is located between the mounting plate 13 of the differential case body 10 and the peripheral wall of the mounting groove 201 of the one-piece axle 200; the differential case body 10 is then fixedly mounted to the axle 200 by the first fixing member 40.

Specifically, when the first mating member 30 is mounted to the peripheral wall of the mounting groove 201 of the integrated axle 200, the pre-fixing member 31 of the first mating member 30 is mounted to the pre-mounting portion formed in the peripheral wall of the mounting groove 201 of the integrated axle 200, so that the first mating member 30 is pre-fixed, facilitating the mounting of the differential case body 10.

According to another aspect of the present invention, there is further provided a method of installing a universal differential case assembly, wherein the universal differential case assembly comprises a differential case body 10, a first fitting member 30 and a second fitting member 20, characterized in that,

when the universal differential case assembly is mounted to the integrated axle 200, the method includes:

mounting the first fitting member 30 on the peripheral wall of the mounting groove 201 of the integrated axle 200;

installing the axle connector 12 of the differential case body 10 in the installation groove 201 of the integrated axle 200; and

fixing the differential case body 10 to the peripheral wall of the mounting groove 201 of the one-piece axle 200;

when the universal differential case assembly is mounted to the split axle 300, the method includes:

mounting the second mating member 20 to the first and second avoidance portions 1211 and 1221 formed at the first and second connection ends 121 and 122 of the axle connector 12; and

mounting a first axle 301 and a second axle 302 to the first connection end 121 and the second connection end 122 of the axle connector 12, respectively.

It will be understood by those skilled in the art that the embodiments of the present invention as described above and shown in the drawings are given by way of example only and are not limiting of the present invention. The objects of the present invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the embodiments without departing from the principles, embodiments of the present invention may have any deformation or modification.

Claims (9)

1. A differential case body, comprising:

a drive assembly connection configured to connect a drive assembly;

an axle connector configured to connect an integral axle or a split axle, wherein the integral axle includes a mounting slot having a first diameter, the split axle includes a first axle having a first coupling end and a second axle having a second coupling end;

the mounting disc is arranged between the axle connector and the driving assembly connecting part;

the axle connector comprises a first connecting end and a second connecting end opposite to the first connecting end, the mounting disc comprises a first avoidance groove and a second avoidance groove which are protrudingly formed in the edge area of the mounting disc and respectively correspond to the first connecting end and the second connecting end, when the axle connector is configured to connect the split axle, the first connecting end is configured to be connected with the first coupling end of the first axle, the first avoidance groove is configured to avoid the first coupling end and the mounting disc, the second connecting end is configured to be matched with the second coupling end of the second axle, and the second avoidance groove is configured to avoid the second coupling end and the mounting disc;

the axle connector further comprises a first avoiding portion formed at the first connecting end and a second avoiding portion formed at the second connecting end, and the diameters of the axle connector at the first connecting end and the second connecting end are smaller than the first diameter through the first avoiding portion and the second avoiding portion, so that the axle connector can be contained in the mounting groove of the integrated axle in a matched mode, and the axle connector can be connected to the integrated axle.

2. The differential case body according to claim 1, wherein the first connection end is provided with a first mounting surface for mating with the first coupling end, and the first escape portion includes first recesses respectively formed on both sides of a center line set by the first mounting surface, wherein the second connection end is provided with a second mounting surface for mating with the second coupling end, and the second escape portion includes second recesses respectively formed on both sides of a center line set by the second mounting surface.

3. The differential case body according to claim 2, wherein said first recess is formed symmetrically on both sides of a center line defined by said first mounting surface, and/or said second recess is formed symmetrically on both sides of a center line defined by said second mounting surface.

4. The differential case body according to claim 3 wherein two first angles set between the outer surfaces of the two first recesses and the first mounting surface are equal and/or two second angles set between the outer surfaces of the two second recesses and the second mounting surface are equal.

5. The differential case body of claim 4 wherein said first included angle and said second included angle are equal.

6. The differential case body of claim 3 wherein the outer surface of the first recess is planar and/or the outer surface of the second recess is planar.

7. The differential case body according to claim 3, wherein an outer surface of the first recess is an arc surface, and/or an outer surface of the second recess is an arc surface.

8. The differential case body of claim 7 wherein the outer surface of the first recess has a radius of curvature equal to the first diameter and/or the outer surface of the second recess has a radius of curvature equal to the first diameter.

9. A universal differential case assembly, comprising:

the differential case body according to any one of claims 1 to 8;

a first mating member configured to: when the axle connector is connected to the integrated axle, the first fitting piece is respectively and adaptively arranged in a gap formed between the first avoidance groove and the second avoidance groove of the mounting disc and the peripheral wall of the mounting groove of the integrated axle; and

a second mating element configured to: when the axle connector is connected to the split axle, the second mating piece is respectively mounted on the first avoiding portion and the second avoiding portion, so that the first mounting surface and the second mounting surface are flat surfaces, the first connecting end can be configured to be connected with the first coupling end of the first axle, and the second connecting end can be configured to be matched with the second coupling end of the second axle.

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