CN218031134U - Drive shaft and vehicle - Google Patents

Abstract

The utility model discloses a drive shaft and vehicle, the drive shaft includes: a cage housing; a shaft body; the support frame is arranged in the ball cage shell; the star-shaped sleeve is arranged between the support frame and the shaft body, and is provided with a disassembly chamfer surface and an assembly chamfer surface at two axial sides; the retainer ring is sleeved on the shaft body and is positioned on one side, away from the assembly chamfer surface, of the disassembly chamfer surface; the elastic gasket is sleeved on the shaft body and is positioned on the circumferential inner side of the retainer ring. When assembling or dismantling the drive shaft, the star cover can be worn to establish smoothly along equipment chamfer surface or dismantlement chamfer surface to retaining ring and spring washer, and wherein, the retaining ring can receive the shearing extrusion force of star cover, utilizes spring washer's elastic force effect, can make the retaining ring wear to establish the star cover easily to can not make the retaining ring drop easily, easy to assemble and dismantlement.

Description

Drive shaft and vehicle

Technical Field

The utility model belongs to the technical field of the automotive technology and specifically relates to a drive shaft and vehicle are related to.

Background

Constant velocity universal joints are used as key mechanisms in automobile driving systems, and have high requirements on the bearing capacity, the service performance and the durability. A constant velocity joint is a mechanism that connects two shafts whose axes do not coincide with each other and transmits motion at the same angular velocity between the two shafts. The constant velocity universal joint generally comprises an outer race, an inner race arranged in the outer race, and a steel ball arranged between the outer race and the inner race, wherein the center of the inner race is connected with a mandrel, and in order to ensure that the inner race and the mandrel are firmly connected and can bear enough drawing strength, a steel wire check ring is arranged between the inner race and the mandrel, so that the inner race is prevented from falling off from the mandrel.

In the correlation technique, generally set up the steel wire retainer ring groove on the dabber, at the annular steel wire retaining ring of steel wire retainer ring inslot joint, the steel wire retaining ring locks in the steel wire retainer ring inslot after the installation, when needs are dismantled, because the whole atress of retaining ring, area of contact is big, leads to the retaining ring to drop easily for the maintenance is dismantled very difficultly, and even unable normal removal.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a retaining ring and spring washer are established to the spindle cover to make spring washer be located the circumference of retaining ring inboard, under the cooperation on star cover axial both sides chamfer surface, can stabilize the retaining ring and be difficult to drop when the assembly with dismantle.

The utility model also provides a vehicle.

According to the utility model discloses a drive shaft of embodiment of first aspect, the drive shaft includes: a cage housing; a shaft body; the support frame is arranged in the ball cage shell; the star-shaped sleeve is arranged between the support frame and the shaft body, and is provided with a disassembly chamfer surface and an assembly chamfer surface at two axial sides; the retainer ring is sleeved on the shaft body and is positioned on one side, away from the assembly chamfer surface, of the disassembly chamfer surface; the elastic gasket is sleeved on the shaft body and is positioned on the circumferential inner side of the retainer ring.

According to the utility model discloses a drive shaft, be provided with in the axial both sides of star cover and dismantle chamfer surface and equipment chamfer surface, and the retaining ring together overlaps with the inboard cushion ring of circumference that is located the retaining ring and establish on the axis body, when the drive shaft is assembled or is dismantled, the star cover can be worn to establish smoothly along equipment chamfer surface or dismantlement chamfer surface to retaining ring and cushion ring, and wear to establish the in-process of star cover at the retaining ring, the retaining ring can receive the shearing extrusion force of star cover, at this moment, utilize cushion ring's spring action, can make the retaining ring wear to establish the star cover comparatively easily, and can not make the retaining ring drop easily, thereby make things convenient for workman's installation and dismantlement drive shaft.

According to some embodiments of the utility model, be provided with annular mounting groove on the axis body, the spring washer set up in the mounting groove, a part of retaining ring is located in the mounting groove, another part protrusion of retaining ring in the mounting groove.

According to some embodiments of the invention, the cross-section of the retainer ring and the resilient washer is circular.

According to some embodiments of the invention, the assembly chamfer surface and the disassembly chamfer surface are both conical.

According to some embodiments of the utility model, the number of degrees of dismantling the chamfer surface is greater than the number of degrees of equipment chamfer surface.

According to some embodiments of the present invention, the included angle of the disassembly chamfer surface in the axial direction is α 1, α 1 satisfies the relation: alpha 1 is more than or equal to 60 degrees and less than or equal to 75 degrees; and/or the included angle between the assembly chamfer surface and the axial direction is alpha 2, and the alpha 2 satisfies the relation: alpha 2 is more than or equal to 20 degrees and less than or equal to 30 degrees.

According to some embodiments of the invention, the length of the projection of the disassembly chamfer surface on the shaft body is less than the length of the projection of the assembly chamfer surface on the shaft body.

According to the utility model discloses a some embodiments, dismantle the chamfer surface and be in the length of the projection on the axis body is h1, the equipment chamfer surface is in the length of the projection on the axis body is h2, satisfies the relational expression between h1 and the h 2: h1/h2 is more than or equal to 0.07 and less than or equal to 0.08.

According to the utility model discloses a some embodiments, be provided with the perforation on the star cover, be provided with first spline in the perforation, be provided with the second spline on the axis body, first spline with the spacing cooperation of second spline.

According to the utility model discloses a vehicle of the embodiment of second aspect includes: the drive shaft described above.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a drive shaft according to an embodiment of the present invention;

fig. 2 is a partial enlarged view of a drive shaft according to an embodiment of the present invention;

fig. 3 is an elevation view of a spider sleeve according to an embodiment of the present invention;

fig. 4 is a cross-sectional view of a drive shaft according to an embodiment of the present invention;

fig. 5 is a left side view of a drive shaft according to an embodiment of the present invention;

fig. 6 is a right side view of a drive shaft according to an embodiment of the present invention.

Reference numerals:

100. a drive shaft;

10. a cage housing; 11. a dust-proof sleeve; 12. clamping a hoop;

20. a shaft body; 21. mounting grooves;

30. a holder;

40. a star-shaped sleeve; 41. disassembling the chamfered surface; 42. assembling the chamfered surface; 43. perforating; 44. a first spline;

50. a retainer ring; 60. an elastic washer.

Detailed Description

Embodiments of the present invention are described in detail below, and the embodiments described with reference to the drawings are exemplary.

A drive shaft 100 according to an embodiment of the present invention is described below with reference to fig. 1 to 6.

As shown in fig. 1 and 2, the drive shaft 100 includes: the ball cage housing 10, the shaft body 20, the holder 30, the inner race 40, the retainer ring 50, and the elastic washer 60.

The support frame 30 is disposed in the cage housing 10, and the inner race 40 is disposed between the support frame 30 and the shaft body 20. According to the arrangement, the support frame 30 is installed on the outer side of the star-shaped sleeve 40, the plurality of steel balls are arranged on the surface of the support frame 30, the plurality of steel balls can be tightly pressed on the outer surface of the star-shaped sleeve 40 through the support frame 30, and the ball cage shell 10 is installed on the outer side of the support frame 30, so that the plurality of steel balls are in contact connection with the inner wall of the ball cage shell 10, and the plurality of steel balls are guaranteed to rotate unimpeded. In addition, the surface of ball cage casing 10 can be provided with the ring gear to facilitate the connection transmission, and still set up dirt proof boot 11 at the mounting hole of ball cage casing 10, the both ends of dirt proof boot 11 are passed through clamp 12 and are installed on the surface of ball cage casing 10 and axis body 20, not only can prevent impurity such as dust, can also form inclosed space, are annotated in the space and have lubricating oil, thereby can make the drive shaft can transmit the motion in a flexible way.

And, the inner race 40 is provided with a disassembly chamfer surface 41 and an assembly chamfer surface 42 on both axial sides. So set up, when the star shell 40 and the axis body 20 are assembled, the axis body 20 can smoothly pass through the star shell 40 along the assembly chamfer surface 42, and when the axis body 20 needs to be disassembled from the star shell 40, the axis body 20 can smoothly pass through the star shell 40 along the disassembly chamfer surface 41, therefore, the arrangement of the disassembly chamfer surface 41 and the assembly chamfer surface 42 can play an effective guiding role, and simultaneously, the surface of the axis body 20 or the star shell 40 is not damaged.

Furthermore, the retainer ring 50 is sleeved on the shaft body 20, and the retainer ring 50 is located on a side of the dismounting chamfer surface 41 away from the assembling chamfer surface 42. Referring to fig. 2, the retainer ring 50 is disposed at one end of the shaft body 20 and located at one side of the inner race 40 close to the inner wall of the ball cage housing 10, so that the inner race 40 is fixed at one end of the shaft body 20 through the retainer ring 50, the inner race 40 can be prevented from being separated from the shaft body 20, the inner race 40 and the shaft body 20 can be firmly connected, and the inner race can bear enough pull strength to ensure that the driving shaft 100 can transmit movement and torque.

In addition, the elastic washer 60 is fitted over the shaft body 20, and the elastic washer 60 is located on the circumferential inner side of the retainer ring 50. With this arrangement, the elastic washer 60 is further sleeved on the shaft body 20, and the elastic washer 60 is located on the inner side in the circumferential direction of the retainer ring 50, when the shaft body 20 penetrates through the star sleeve 40, the retainer ring 50 is freely moved in the radial direction or the axial direction due to the star sleeve 40 pressing the retainer ring 50, and even is separated from the shaft body 20, at this time, under the elastic force action of the elastic washer 60, the cross-sectional areas of the retainer ring 50 and the elastic washer 60 become smaller, so that the interaction force between the retainer ring 50 and the star sleeve 40 is reduced, and the shaft body 20 is relatively easily dismounted or mounted under the guiding action of dismounting the chamfer surface 41 or assembling the chamfer surface 42.

From this, be provided with at the axial both sides of star cover 40 and dismantle chamfer surface 41 and equipment chamfer surface 42, and retaining ring 50 overlaps on the axis body 20 with the spring washer 60 that is located the inboard circumference of retaining ring 50, when drive shaft 100 assembles or dismantles, retaining ring 50 and spring washer 60 can wear to establish star cover 40 along equipment chamfer surface 42 or dismantlement chamfer surface 41 smoothly, and wear to establish the in-process of star cover 40 at retaining ring 50, retaining ring 50 can receive the shearing extrusion force that comes from star cover 40, at this moment, utilize the spring action of spring washer 60, can make retaining ring 50 wear to establish star cover 40 comparatively easily, and can not make retaining ring 50 drop easily, thereby make things convenient for workman's installation and dismantlement.

Furthermore, an annular mounting groove 21 is formed in the shaft body 20, the elastic washer 60 is disposed in the mounting groove 21, a part of the retainer ring 50 is disposed in the mounting groove 21, and another part of the retainer ring 50 protrudes out of the mounting groove 21. With the arrangement, the retainer ring 50 and the elastic washer 60 can be limited to move in the radial direction and the axial direction by the annular mounting groove 21 and also can be shrunk to a certain extent, and when the assembly or disassembly is carried out, the other part of the retainer ring 50, which protrudes out of the mounting groove 21, is completely extruded into the mounting groove 21 as far as possible under the bias action of the assembly chamfer surface 42 or the disassembly chamfer surface 41, so that the interaction force between the retainer ring 50 and the star-shaped sleeve 40 is reduced, and the disassembly or assembly efficiency is effectively improved, therefore, the retainer ring 50 and the elastic washer 60 are matched with each other, the star-shaped sleeve 40 can be effectively prevented from being separated from the shaft body 20, and the assembly and disassembly of the star-shaped sleeve 40 and the shaft body 20 by workers can be facilitated.

Both the retainer ring 50 and the elastic washer 60 may have a circular cross section. So set up, with the cross sectional shape looks adaptation of axis body 20, can make retaining ring 50 and spring washer 60 laminate with axis body 20 mutually to guarantee that retaining ring 50 is difficult to drop from the axis body 20 when installation or dismantlement. And, the circular retaining ring 50 and the elastic washer 60 are matched with the annular mounting groove 21, so that part of the retaining ring 50 and the whole of the elastic washer 60 can be embedded into the mounting groove 21, the problem of radial or axial movement is avoided, and meanwhile, under the extrusion of the star-shaped sleeve 40 and the movement of the shaft body 20, the circular retaining ring 50 and the elastic washer 60 can rotate in the mounting groove 21, so that the abrasion of the circular retaining ring 50 and the elastic washer 60 is reduced. Of course, the cross-section of the retainer ring 50 and the resilient washer 60 may also be oval or other polygonal shapes.

Further, the retainer ring 50 may be formed of a material having an appropriate elastic force retaining shape. For example, the retainer ring 50 may be a steel wire bent into any circular or oval shape, and may provide sufficient elastic force for installation and removal together with the elastic washer 60 while maintaining its shape.

As shown in fig. 3-6, both the assembly chamfer surface 42 and the disassembly chamfer surface 41 may be conical. So set up, compare current a plurality of equipment chamfers and a plurality of dismantlement chamfers, equipment chamfer surface 42 all sets up to a chamfer with dismantlement chamfer surface 41, under mutually supporting with retaining ring 50 and spring washer 60, can effectively stabilize retaining ring 50 and be difficult to drop when the assembly with dismantle, and can with circular shape retaining ring 50 and spring washer 60 looks adaptation, make retaining ring 50 and spring washer 60 under the assistance of equipment chamfer surface 42 and dismantlement chamfer surface 41, make things convenient for the installation of axis body 20 and dismantle, simple structure simultaneously, and convenient for manufacture.

Wherein the degree of the disassembly chamfer surface 41 is greater than the degree of the assembly chamfer surface 42. That is, the included angle between the disassembly chamfer surface 41 and the axial surface of the shaft body 20 is greater than the included angle between the assembly chamfer surface 42 and the axial surface of the shaft body 20, so as to be arranged, when being installed, under the interaction of the check ring 50 and the elastic washer 60 with the star shaped sleeve 40, the path of the shaft body 20 moving along the assembly chamfer surface 42 can be relatively lengthened, so that the shaft body 20 and the star shaped sleeve 40 form a good corresponding fit, and when being disassembled, the path of the shaft body 20 moving along the disassembly chamfer surface 41 can be relatively shortened, so that the shaft body 20 can be quickly and easily drawn out from the star shaped sleeve 40.

Moreover, the angle of the removal chamfer surface 41 in the axial direction is α 1, α 1 satisfying the relation: alpha 1 is more than or equal to 60 degrees and less than or equal to 75 degrees. So set up, when dismantling the axis body 20, can make and dismantle chamfer surface 41 and form suitable shearing extrusion force to retaining ring 50, can effectively compress retaining ring 50 to make retaining ring 50 compressed to the mounting groove 21 in, effectively improve and dismantle efficiency. If the value α 1 is too small, the retainer ring 50 is not easily pressed, so that the disassembly time is long, and if the value α 1 is too large, although the disassembly of the shaft body 20 is facilitated, the star sleeve 40 is easily separated from the shaft body 20 under the normal sliding of the shaft body 20 along the star sleeve 40, so that the drive shaft 100 cannot be normally used.

And, the assembly chamfer surface 42 has an angle α 2 with the axial direction, α 2 satisfying the relationship: alpha 2 is more than or equal to 20 degrees and less than or equal to 30 degrees. So set up, in the assembling process of axis body 20 and star cover 40, can wear to establish star cover 40 for the axis body 20 and provide certain guide effect to mutually support with retaining ring 50 and spring washer 60, can guarantee that the axis body 20 wears to establish star cover 40 smoothly and forms well between axis body 20 and the star cover 40 and be connected the cooperation relation.

Further, the length of the projection of the disassembly chamfer surface 41 on the shaft body 20 is smaller than the length of the projection of the assembly chamfer surface 42 on the shaft body 20. That is, in the axial direction of the shaft body 20, the length of the disassembly chamfer surface 41 is smaller than the length of the assembly chamfer surface 42, so that in combination with the design that the degree of the disassembly chamfer surface 41 is greater than the degree of the assembly chamfer surface 42, the path of the shaft body 20 moving along the assembly chamfer surface 42 can be relatively lengthened and the path of the shaft body 20 moving along the disassembly chamfer surface 41 can be relatively shortened, further facilitating the assembly and disassembly of the shaft body 20.

Specifically, the length of the projection of the disassembly chamfer surface 41 on the shaft body 20 is h1, the length of the projection of the assembly chamfer surface 42 on the shaft body 20 is h2, and the relationship between h1 and h2 is satisfied: h1/h2 is more than or equal to 0.07 and less than or equal to 0.08. So set up, on the axial direction of axis body 20, the length of equipment chamfer surface 42 is greater than the length of dismantling chamfer surface 41 far away, makes the outer terminal surface of the relative one side of star cover 40 of equipment chamfer surface 42 be formed with certain degree of depth, and the in-process of wearing to establish at the axis body 20 like this not only can make and carry out the good cooperation that corresponds between axis body 20 and the star cover 40, still is difficult to damage star cover 40's internal surface, effectively improves the cooperation precision. And, the length setting of the disassembly chamfer surface 41 enables the shaft body 20 to be quickly disassembled while still not disengaging the retainer ring 50 from the shaft body 20.

In addition, a through hole 43 is formed in the star-shaped sleeve 40, a first spline 44 is arranged in the through hole 43, a second spline is arranged on the shaft body 20, and the first spline 44 is in limit fit with the second spline. So set up, the axis body 20 wears to establish the star cover 40 through perforation 43, makes first spline 44 and second spline carry out spacing cooperation, guarantees the nimble transmission motion of drive shaft 100 and moment of torsion.

According to the utility model discloses vehicle of second aspect embodiment includes: the drive shaft 100 described above.

Therefore, the dismounting chamfer surface 41 and the assembling chamfer surface 42 are arranged at two axial sides of the star-shaped sleeve 40, and the retainer ring 50 and the elastic washer 60 positioned at the circumferential inner side of the retainer ring 50 are sleeved on the shaft body 20 together, when the driving shaft 100 is assembled or disassembled, the retainer ring 50 and the elastic washer 60 can smoothly penetrate through the star-shaped sleeve 40 along the assembling chamfer surface 42 or the dismounting chamfer surface 41, and in the process that the retainer ring 50 penetrates through the star-shaped sleeve 40, the retainer ring 50 can be subjected to shearing extrusion force from the star-shaped sleeve 40, at the moment, the retainer ring 50 can easily penetrate through the star-shaped sleeve 40 by utilizing the elastic force of the elastic washer 60, and the retainer ring 50 is not easy to fall off, thereby facilitating the installation and disassembly of the driving shaft 100 by workers.

In the description of the present invention, it is to be understood that the terms "center", "length", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A drive shaft, comprising:

a cage housing;

a shaft body;

the support frame is arranged in the ball cage shell;

the star-shaped sleeve is arranged between the support frame and the shaft body, and is provided with a disassembly chamfer surface and an assembly chamfer surface at two axial sides;

the retainer ring is sleeved on the shaft body and is positioned on one side, away from the assembly chamfer surface, of the disassembly chamfer surface;

the elastic gasket is sleeved on the shaft body and is positioned on the circumferential inner side of the retainer ring.

2. The drive shaft according to claim 1, wherein an annular mounting groove is formed in the shaft body, the elastic washer is disposed in the mounting groove, a portion of the retainer ring is disposed in the mounting groove, and another portion of the retainer ring protrudes from the mounting groove.

3. The drive spindle of claim 1, wherein the retainer ring and the spring washer are both circular in cross-section.

4. The drive spindle of claim 1, wherein the assembly chamfer surface and the disassembly chamfer surface are both conical.

5. The drive shaft of claim 1, wherein the number of degrees of the disassembly chamfer surface is greater than the number of degrees of the assembly chamfer surface.

6. The drive spindle of claim 5, wherein the disassembly chamfer surface includes an angle α 1 in the axial direction, α 1 satisfying the relationship: alpha 1 is more than or equal to 60 degrees and less than or equal to 75 degrees; and/or the presence of a gas in the gas,

the included angle between the surface of the assembled chamfer and the axial direction is alpha 2, and the alpha 2 satisfies the relational expression: alpha 2 is more than or equal to 20 degrees and less than or equal to 30 degrees.

7. The drive shaft of claim 1, wherein a length of a projection of the disassembly chamfer surface on the shaft body is less than a length of a projection of the assembly chamfer surface on the shaft body.

8. The drive shaft according to claim 7, wherein a projection of the disassembly chamfer surface on the shaft body has a length h1, a projection of the assembly chamfer surface on the shaft body has a length h2, and a relationship between h1 and h2 is satisfied: h1/h2 is more than or equal to 0.07 and less than or equal to 0.08.

9. The drive shaft of claim 1, wherein the star sleeve has a bore, the bore has a first spline disposed therein, the shaft has a second spline disposed thereon, and the first spline and the second spline are in a positive fit.

10. A vehicle, characterized by comprising: the drive shaft of any one of claims 1-9.

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