CN214775375U

CN214775375U - Automobile driving shaft

Info

Publication number: CN214775375U
Application number: CN202120313364.0U
Authority: CN
Inventors: 郝云鹏; 张传磊
Original assignee: Shanghai Jinxin Forging Co ltd
Current assignee: Shanghai Jinxin Forging Co ltd
Priority date: 2021-02-03
Filing date: 2021-02-03
Publication date: 2021-11-19
Anticipated expiration: 2031-02-03

Abstract

The application relates to an automobile driving shaft, which comprises a driving shaft body and an intermediate shaft, wherein a ball cage connecting assembly is arranged between the driving shaft body and the intermediate shaft, the ball cage connecting assembly comprises an outer ball shell and an inner ball head, the inner ball head is matched in the outer ball shell, the outer ball shell is fixed at one end of the intermediate shaft, the inner ball head is installed on the driving shaft body, a dustproof sleeve made of rubber materials is sleeved outside the ball cage connecting assembly, one end of the dustproof sleeve is fixed on the outer ball shell, the other end of the dustproof sleeve is fixed on the driving shaft body, a first fixing device for fixing the dustproof sleeve is arranged on the outer ball shell, a second fixing device for fixing the dustproof sleeve is arranged on the driving shaft body, the first fixing device comprises an outer ring piece and an inner ring piece, the outer ring piece is sleeved on the outer wall of the dustproof sleeve, the inner ring piece is located inside the dustproof sleeve, the screw is fixed on the inner ring piece, and the screw is connected with the inner ring piece and the outer ring piece through the nut. This application has the effect that reduces the dirt proof boot and takes place the pine to take off, improves the fastness of dirt proof boot.

Description

Automobile driving shaft

Technical Field

The application relates to the technical field of driving shafts, in particular to an automobile driving shaft.

Background

The automobile driving shaft is an important part for transmitting power in an automobile transmission system, the automobile driving shaft is used for transmitting the power of an engine to wheels together with a gearbox and a drive axle so as to enable an automobile to generate driving force, and the driving shaft mostly adopts a front universal joint and a rear universal joint and a sliding spline pair to ensure the transmission length and angle change of the driving shaft.

The patent document with the publication number of CN204586509U discloses an automobile driving shaft assembly with a fixed support, which comprises an inner ball cage, an outer ball cage, an inner ball cage dustproof sleeve, an outer ball cage dustproof sleeve and an intermediate shaft, wherein the inner ball cage and the outer ball cage are respectively connected to two ends of the intermediate shaft, one ends of the inner ball cage dustproof sleeve and the outer ball cage dustproof sleeve are respectively fixed at the open ends of the inner ball cage and the outer ball cage through a binding ring, the other ends of the inner ball cage dustproof sleeve and the outer ball cage dustproof sleeve are respectively fixed on the intermediate shaft, the intermediate shaft is sleeved with the fixed support, a fixed bearing is arranged between the fixed support and the intermediate shaft, the fixed support can rotate along the circumferential direction of the intermediate shaft through the fixed bearing, a plurality of support mounting holes are formed in the fixed support, and the automobile driving shaft assembly has the effect of improving the mounting stability of the driving shaft assembly.

But the dirt proof boot takes place the pine easily through the collar is fixed among the above-mentioned structure and takes off, causes the dirt proof boot inefficacy.

SUMMERY OF THE UTILITY MODEL

In order to reduce the dirt proof boot and take place the pine and take off, improve the fastness of dirt proof boot, this application provides an automobile driving shaft.

The application provides an automobile driving shaft, adopts following technical scheme:

an automobile driving shaft comprises a driving shaft body and a middle shaft, wherein a ball cage connecting assembly is arranged between the driving shaft body and the middle shaft and comprises an outer ball shell and an inner ball head, the inner ball head is matched in the outer ball shell, the outer ball shell is fixed at one end of the middle shaft, the inner ball head is installed on the driving shaft body, a dustproof sleeve made of rubber materials is sleeved outside the ball cage connecting assembly, one end of the dustproof sleeve is fixed on the outer ball shell, the other end of the dustproof sleeve is fixed on the driving shaft body, a first fixing device used for fixing the dustproof sleeve is arranged on the outer ball shell, a second fixing device used for fixing the dustproof sleeve is arranged on the driving shaft body and comprises an outer ring piece, an inner ring piece, a screw rod and a nut, the outer ring piece is sleeved on the outer wall of the dustproof sleeve, and the inner ring piece is positioned inside the dustproof sleeve, the screw rod is fixed on the inner ring piece, the screw rod is connected with the inner ring piece and the outer ring piece through the nut, and the dustproof sleeve is extruded between the inner ring piece and the outer ring piece.

By adopting the technical scheme, when the dustproof sleeve is used, the outer spherical shell is matched with the inner spherical head, one end of the dustproof sleeve is fixed on the outer spherical shell through the first fixing device, the other end of the dustproof sleeve is fixed on the driving shaft body through the second fixing device, the first fixing device comprises the outer ring piece and the inner ring piece, one end of the dustproof sleeve is clamped between the inner ring piece and the outer ring piece, the screw rod is matched with the nut to extrude the outer ring piece and the inner ring piece relatively, the dustproof sleeve is extruded on the inner ring piece and the outer ring piece, fixing firmness of the dustproof sleeve is improved, and loosening of the dustproof sleeve is reduced.

Preferably, the inner ring piece is provided with a first inclined surface, the inner ring piece is sleeved with an extrusion piece, the inner side of the extrusion piece is provided with a second inclined surface facing the inner ring piece, and the first inclined surface and the second inclined surface are arranged in a matched mode relatively.

Through adopting above-mentioned technical scheme, on the ring spare, the inclined plane two is located the extruded piece including the inclined plane is seted up to two to inclined plane and inclined plane one cooperate the extrusion relatively, make the extruded piece under the effect of ring spare expansion deformation, thereby it is fixed to extrude the dirt proof boot.

Preferably, the extrusion is integrally formed with the dust boot.

Through adopting above-mentioned technical scheme, extruded piece and dirt proof boot are integrative to be set up, and the dirt proof boot is at the in-process that takes place the pine to take off, receives the extruded piece to keep off stopping of ring spare in to can reduce the dirt proof boot pine and take off.

Preferably, the inner ring member comprises an inner liner and an outer layer, the outer layer is made of rubber materials, the outer layer is vulcanized on the inner liner, and the screw is fixed on the inner liner.

Through adopting above-mentioned technical scheme, the skin is made for rubber materials, and the skin vulcanizes on the inside lining to the bonding between skin and the inside lining is more firm, and supports the skin by the inside lining.

Preferably, the outer ring member includes a main body portion and an L-shaped portion, the L-shaped portion and the main body portion are integrally formed, the L-shaped portion is located at one end of the main body portion, the L-shaped portion and the main body portion form an annular groove, an outer edge formed on the dust-proof sleeve is inserted into the annular groove.

Through adopting above-mentioned technical scheme, main part and L shape portion form the ring channel, place the outer fringe on the dirt proof boot in the ring channel to further reduce the pine of dirt proof boot through the ring channel and take off.

Preferably, the second fixing device comprises an inner supporting ring and a holding hoop, the inner supporting ring is fixed on the driving shaft body, an arc-shaped annular groove is formed in the outer side wall of the inner supporting ring, the dustproof sleeve is located in the arc-shaped annular groove, and the dustproof sleeve is fixed in the arc-shaped annular groove through the holding hoop.

Through adopting above-mentioned technical scheme, seted up the arc annular on the inner support ring, place the dirt proof boot in the arc annular, then fix in the arc annular through embracing the hoop tightly to make the other end of dirt proof boot fixed.

Preferably, the inner side of the clasping hoop is provided with an extrusion ring made of a rubber material, and the extrusion ring is extruded and deformed to abut against the outer wall of the dustproof sleeve under the action of the clasping hoop.

Through adopting above-mentioned technical scheme, the extrusion circle is made for rubber materials, and the extrusion circle warp under the effect of embracing tightly hooping to improve the area of contact of extrusion circle and dirt proof boot.

Preferably, the extrusion ring is provided with an installation groove, and the clasping hoop is positioned in the installation groove.

Through adopting above-mentioned technical scheme, offer the mounting groove on the clamping ring, will hold tightly the hoop setting in the mounting groove to can make and hold tightly the position of hoop and clamping ring more firm, reduce the pine and take off simple to operate.

In summary, the present application includes at least one of the following beneficial technical effects:

1. one end of the dustproof sleeve is fixed on the outer spherical shell through a first fixing device, the first fixing device comprises an outer ring piece and an inner ring piece, one end of the dustproof sleeve is clamped between the inner ring piece and the outer ring piece, and the outer ring piece and the inner ring piece are relatively extruded through the matching of the screw rod and the nut, so that the fixing firmness of the dustproof sleeve is improved, and the looseness of the dustproof sleeve is reduced;

2. the first inclined plane is arranged on the inner ring piece, the second inclined plane is arranged on the extrusion piece, and the second inclined plane and the first inclined plane are oppositely matched for extrusion, so that the extrusion piece expands and deforms under the action of the inner ring piece, and the dustproof sleeve is extruded and fixed;

3. an annular groove is formed by the main body part and the L-shaped part, and the outer edge of the dustproof sleeve is placed in the annular groove, so that the looseness of the dustproof sleeve is further reduced through the annular groove.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;

FIG. 2 is an enlarged partial schematic view of portion A of FIG. 1;

fig. 3 is a partially enlarged schematic view of a portion B in fig. 1.

Description of reference numerals: 1. a driving shaft body; 2. an intermediate shaft; 3. a ball cage connection assembly; 31. an outer spherical shell; 32. an inner ball head; 33. a ball bearing; 4. a dust-proof sleeve; 41. an outer edge; 5. a first fixing device; 51. an outer ring member; 511. a main body portion; 512. an L-shaped portion; 513. an annular groove; 52. an inner ring member; 521. a first inclined surface; 522. a liner; 523. an outer layer; 53. an extrusion; 531. a second inclined surface; 54. a screw; 55. a nut; 6. a second fixing device; 61. an inner support ring; 611. an arc-shaped ring groove; 62. tightly hooping; 63. extruding a ring; 631. and (4) mounting the groove.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses car driving shaft, refer to fig. 1, including driving shaft body 1 and countershaft 2, jackshaft 2's one end is passed through ball cage coupling assembling 3 with driving shaft body 1's one end and is connected, ball cage coupling assembling 3 includes outer spherical shell 31 and interior bulb 32, outer spherical shell 31 an organic whole sets up the one end that is close to driving shaft body 1 at jackshaft 2, driving shaft body 1 passes through the spline and is connected with interior bulb 32, be provided with a plurality of balls 33 between outer spherical shell 31 and the interior bulb 32, the rolling plane of ball 33 and the coincidence of jackshaft 2's central line, ball 33 is located the transmission moment of torsion between outer spherical shell 31 and the interior bulb 32. In order to protect the ball cage connecting assembly 3, a dustproof sleeve 4 is arranged outside the ball cage connecting assembly 3, the dustproof sleeve 4 is made of rubber materials, one end of the dustproof sleeve 4 is fixed on the outer spherical shell 31, and the other end of the dustproof sleeve is fixed on the driving shaft body 1.

Referring to fig. 1 and 2, a first fixing device 5 is arranged on a driving shaft body 1, the first fixing device 5 comprises an outer ring member 51 and an inner ring member 52, the outer ring member 51 comprises a main body portion 511 and an L-shaped portion 512, the main body portion 511 and the L-shaped portion 512 are integrally arranged, the main body portion 511 is sleeved at one end of a dustproof sleeve 4, the L-shaped portion 512 is fixed at one end of the main body portion 511 facing a middle shaft 2, one side of the L-shaped portion 512 away from the main body portion 511 is close to the middle of an outer spherical shell 31, the inner ring member 52 is arranged inside the dustproof sleeve 4, an inclined surface first 521 is arranged on the inner ring member 52, an extrusion member 53 is sleeved on the inner ring member 52, an extrusion member 53 is arranged on the extrusion member 53, an inclined surface second 531 is arranged on the extrusion member 53, the inclined surface second 531 faces the inner ring member 52, the inclined surface first inclined surface 521 and the inclined surface second inclined surface 531 are in opposite extrusion fit with the inclined surface second inclined surface 531, the inclined surface first inclined surface 521 is arranged facing one end of the middle shaft 2, a screw 54, the inner ring member 52 is arranged on the inner ring member 52, the screw rod 54 extends towards the direction of the intermediate shaft 2, the end part of the screw rod 54 penetrates through the L-shaped part 512 and is in threaded connection with the nut 55, the inner ring piece 52 moves towards the extrusion piece 53 through the nut 55, the inner ring piece 52 and the extrusion piece 53 are relatively extruded through the first inclined surface 521 and the second inclined surface 531, the dustproof sleeve 4 is extruded between the inner ring piece 52 and the outer ring piece 51, and the dustproof sleeve 4 is fixed.

Referring to fig. 2, the extrusion 53 is integrally formed with the boot 4 to further improve the fixation of the boot 4. An outer edge 41 is arranged at one end of the dust-proof sleeve 4 close to the first fixing device 5, the outer edge 41 is integrally formed with the dust-proof sleeve 4, and the outer edge 41 is arranged on the outer wall of the dust-proof sleeve 4. An annular groove 513 positioned on the inner side of the outer ring piece 51 is formed at the joint of the L-shaped part 512 and the main body part 511, the outer edge 41 extends into the annular groove 513, and after the inner ring piece 52 and the outer ring piece 51 are connected, the outer edge 41 is pressed into the annular groove 513, so that the fixation of the dustproof sleeve 4 is further improved. The inner ring 52 includes an inner liner 522 and an outer layer 523, the inner liner 522 is made of metal material, and the inner liner 522 is integrally disposed with the screw 54, or the screw 54 is welded and fixed on the inner liner 522. The outer layer 523 is made of rubber materials, the outer layer 523 is attached to the surface of the inner liner 522 through vulcanization, on one hand, deformation of the outer layer 523 enables the outer layer 523 to extrude the driving shaft body 1, so that the driving shaft body 1 and the inner ring piece 52 are sealed, on the other hand, mutual extrusion deformation between the outer layer 523 and the extrusion piece 53 improves sealing between the outer layer 523 and the extrusion piece 53, the inner liner 522 supports the outer layer 523, and strength of the inner ring piece 52 is improved.

Referring to fig. 1 and 3, a second fixing device 6 is disposed at one end of the dust-proof sleeve 4 close to the driving shaft body 1, the second fixing device 6 includes an inner supporting ring 61, a clasping hoop 62 and a squeezing ring 63, the inner supporting ring 61 is integrally disposed on the driving shaft body 1, an arc-shaped ring groove 611 is disposed on an outer side wall of the inner supporting ring 61, a cross section of the arc-shaped ring groove 611 is semicircular, an arc-shaped portion is disposed at one end of the dust-proof sleeve 4 close to the second fixing device 6, the arc-shaped portion is disposed in the arc-shaped ring groove 611, the squeezing ring 63 is sleeved on the arc-shaped portion, the squeezing ring 63 is made of rubber material, the cross section of the squeezing ring 63 is circular, an installation groove 631 is disposed on the squeezing ring 63, the installation groove 631 is disposed on a side of the squeezing ring 63 facing away from the inner supporting ring 61, the clasping hoop 62 is disposed in the installation groove 631, two ends of the clasping hoop 62 are screwed and fixed by screws, and the clasping hoop 62 is in the locking process, embrace and tightly hoop 62 and extrude extrusion circle 63, make extrusion circle 63 warp to extrusion circle 63 warp the back and the increase of the area of contact of dirt proof boot 4, thereby can be more firm to the installation of dirt proof boot 4, and the leakproofness is better.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides an automobile driving shaft, includes driving shaft body (1) and intermediate shaft (2), be provided with ball cage coupling assembling (3) between driving shaft body (1) and intermediate shaft (2), ball cage coupling assembling (3) are including outer spherical shell (31) and interior bulb (32), interior bulb (32) cooperation is in outer spherical shell (31), and the one end in intermediate shaft (2) is fixed in outer spherical shell (31), its characterized in that is installed on driving shaft body (1) in interior bulb (32): the ball cage connecting assembly (3) is sleeved with a dustproof sleeve (4) made of rubber materials, one end of the dustproof sleeve (4) is fixed on an outer ball shell (31), the other end of the dustproof sleeve is fixed on a driving shaft body (1), a first fixing device (5) used for fixing the dustproof sleeve (4) is arranged on the outer ball shell (31), a second fixing device (6) used for fixing the dustproof sleeve (4) is arranged on the driving shaft body (1), the first fixing device (5) comprises an outer ring piece (51), an inner ring piece (52), a screw rod (54) and a nut (55), the outer ring piece (51) is sleeved on the outer wall of the dustproof sleeve (4), the inner ring piece (52) is located inside the dustproof sleeve (4), the screw rod (54) is fixed on the inner ring piece (52), the screw rod (54) is connected with the inner ring piece (52) and the outer ring piece (51) through the nut (55), and the dustproof sleeve (4) is extruded between the inner ring piece (52) and the outer ring piece (51).

2. The automotive drive shaft of claim 1, characterized in that: the inner ring piece (52) is provided with a first inclined surface (521), the inner ring piece (52) is sleeved with an extrusion piece (53), a second inclined surface (531) facing the inner ring piece (52) is arranged on the inner side of the extrusion piece (53), and the first inclined surface (521) and the second inclined surface (531) are arranged in a matched mode relatively.

3. The automotive drive shaft of claim 2, characterized in that: the extrusion piece (53) and the dustproof sleeve (4) are integrally arranged.

4. The automotive drive shaft of claim 1, characterized in that: the inner ring piece (52) comprises an inner lining (522) and an outer layer (523), the outer layer (523) is made of rubber materials, the outer layer (523) is vulcanized on the inner lining (522), and the screw rod (54) is fixed on the inner lining (522).

5. The automotive drive shaft of claim 1, characterized in that: the outer ring piece (51) comprises a main body part (511) and an L-shaped part (512), the L-shaped part (512) and the main body part (511) are integrally formed, the L-shaped part (512) is located at one end of the main body part (511), an annular groove (513) is formed in the L-shaped part (512) and the main body part (511), an outer edge (41) formed on the dustproof sleeve (4) is inserted into the annular groove (513).

6. The automotive drive shaft of claim 1, characterized in that: second fixing device (6) include inner support ring (61) and embrace hoop (62) tightly, inner support ring (61) are fixed on driving shaft body (1), arc annular (611) have been seted up on the lateral wall of inner support ring (61), dirt proof boot (4) are located arc annular (611), dirt proof boot (4) are fixed in arc annular (611) through embracing hoop (62).

7. The automotive drive shaft of claim 6, characterized in that: the inner side of the clasping hoop (62) is provided with an extrusion ring (63) made of rubber materials, and the extrusion ring (63) is extruded and deformed to abut against the outer wall of the dustproof sleeve (4) under the action of the clasping hoop (62).

8. The automotive drive shaft of claim 7, characterized in that: the extrusion ring (63) is provided with a mounting groove (631), and the clasping hoop (62) is positioned in the mounting groove (631).