CN214788919U

CN214788919U - Driving shaft assembly and vehicle

Info

Publication number: CN214788919U
Application number: CN202120453018.2U
Authority: CN
Inventors: 刘利宝; 王建; 李红超; 张秀明; 唐小勇; 王强
Original assignee: Great Wall Motor Co Ltd
Current assignee: Great Wall Motor Co Ltd
Priority date: 2021-03-02
Filing date: 2021-03-02
Publication date: 2021-11-19
Anticipated expiration: 2031-03-02

Abstract

The utility model relates to a drive shaft assembly and vehicle, wherein the drive shaft assembly includes the fixed knot that is used for being connected with drive wheel hub, is used for the removal festival that is connected with differential mechanism side gear, and both ends respectively with the axostylus axostyle of fixed knot and removal festival connection, be provided with the elastic component that both ends respectively with the tip of axostylus axostyle and removal festival fixed connection in the removal festival, the elastic component disposes to be in the compression state all the time in order to provide the power that pushes away the removal festival towards the direction of differential mechanism side gear. Through above-mentioned technical scheme, the elastic component produces because of the compression and orders about the power that the movable joint compresses tightly on differential mechanism side gear, compares in the mode that the jump ring was fixed the movable joint in side gear in the correlation technique adoption, and the dismouting is more convenient, can avoid the drive shaft to deviate from in the side gear by accident simultaneously.

Description

Driving shaft assembly and vehicle

Technical Field

The present disclosure relates to the field of vehicle technologies, and in particular, to a drive shaft assembly and a vehicle using the same.

Background

At present, a driving shaft on the market is usually connected by a clamp spring, namely a clamp spring groove needs to be machined on a half shaft spline, and then the clamp spring is installed, so that a half shaft is embedded into a half shaft gear through the clamp spring. Because the jump ring has elasticity, need control semi-axis to get into the insertion force of side gear and control the pull out force of jump ring when dismantling the semi-axis, this brings the difficulty for the design of semi-axis chamfer and jump ring groove chamfer, often because chamfer or jump ring design unreasonable lead to the too big influence of insertion force loading efficiency or pull out force when dismantling too big destroy the jump ring structure and lead to semi-axis or derailleur to scrap, and pull out force too little then probably leads to the semi-axis to deviate from, influences driving safety.

SUMMERY OF THE UTILITY MODEL

It is a first object of the present disclosure to provide a drive axle assembly that at least partially solves the above-mentioned problems of the prior art.

In order to achieve the above object, the present disclosure provides a drive shaft assembly, including a fixed joint for connecting with a drive hub, a movable joint for connecting with a differential side gear, and a shaft rod having two ends respectively connected with the fixed joint and the movable joint, wherein an elastic member having two ends respectively fixedly connected with an end of the shaft rod and the movable joint is disposed in the movable joint, and the elastic member is configured to be always in a compressed state to provide a force pushing the movable joint towards the direction of the differential side gear.

Optionally, the elastic member is a conical spring, a small end of the conical spring is fixedly connected with an end of the shaft rod, and a large end of the conical spring is fixedly connected with the movable joint.

Optionally, an end of the shaft rod, which is used for being connected with the movable joint, is provided with a shaft rod ball head, a shaft head connecting ball is further arranged in the movable joint, the shaft head connecting ball is hollow so as to be capable of covering the outside of the shaft rod ball head, and the elastic member is arranged between the shaft head connecting ball and the movable joint.

Optionally, the shaft bulb is integrally formed at an end of the shaft.

Optionally, the driving shaft assembly further includes a three-pin joint belt roller set slidably disposed in the cavity of the movable joint along the axial direction, the three-pin joint belt roller set is coaxially and rotatably sleeved on the end portion of the shaft rod, wherein the three-pin joint belt roller set includes a three-pin shaft for being sleeved on the end portion of the shaft rod and three rolling components radially disposed on the peripheral wall of the three-pin shaft at intervals, and a slide way for the rolling components to slide inside is disposed on the inner wall of the cavity of the movable joint.

Optionally, the rolling assembly comprises a roller pin, an inner ring roller and an outer ring roller which are sequentially sleeved on the shaft body of the three-pin shaft from inside to outside, the three-pin joint belt roller set further comprises a retainer ring which is stopped at the outer side of the inner ring roller, and the retainer ring is arranged on the shaft body of the three-pin shaft through a retainer ring snap spring.

Optionally, the outer peripheral surface of the end portion of the shaft lever is provided with a first clamping portion along the circumferential direction, the inner peripheral surface of the three-pin shaft is provided with a second clamping portion matched with the first clamping portion along the circumferential direction, the outer peripheral surface of the shaft lever is further provided with a ball pin clamp spring groove used for accommodating a ball pin clamp spring, and the three-pin shaft is connected with the shaft lever in a coaxial rotating manner through the ball pin clamp spring.

Optionally, an anti-falling clamp spring groove is formed in the inner wall of the opening of the cavity of the moving section, the driving shaft assembly further comprises an anti-falling clamp spring used for preventing the three-pin section with the roller set from falling off from the moving section along the axial direction, and the anti-falling clamp spring is matched with the anti-falling clamp spring groove in shape.

Optionally, the drive shaft assembly further comprises a sheath disposed outside a junction of the shaft and the movable joint, the sheath configured to be axially retractable, a small end of the sheath being clampingly mounted on the inner clamp groove of the shaft by a small clamp, and a large end of the sheath being clampingly mounted outside the movable joint by a collar and a large clamp.

A second object of the present disclosure is to provide a vehicle including the drive axle assembly described above.

During the running process of the vehicle, the elastic piece is always in a compression state, so the elastic piece has an elastic force to the shaft, and meanwhile, the fixed joint is fixed in relative position, so the elastic piece also has an opposite force to the movable joint, in other words, the elastic piece also provides a force for pushing the movable joint towards the direction of the differential side gear, so that the movable joint can be always pressed on the differential side gear.

Through above-mentioned technical scheme, the elastic component produces because of the compression and orders about the power that the movable joint compressed tightly on differential mechanism side gear, compares in the mode that the jump ring was fixed the movable joint in side gear in the correlation technique adoption jump ring, owing to need not to be equipped with the jump ring, consequently the process that the movable joint inserted side gear is lighter to because there is not the axial positioning of jump ring, also easier during the dismantlement, avoided the problem because of the drive shaft and the gearbox damage that the pull-out power too big leads to. Meanwhile, the effective length of the spline can be increased due to the fact that a clamp spring groove does not need to be machined in the spline. In the running process of the vehicle, the pushing force of the elastic piece to the movable joint exists all the time, so that the driving shaft can be prevented from being accidentally disengaged from the side gear.

In addition, this disclosed drive shaft assembly owing to cancelled the design of jump ring, consequently can avoid producing when adopting jump ring connected mode because of the existence of tolerance need leave the assembly gap, lead to the jump problem of jump ring production in the semi-axis, in order to avoid the oil leak, usually at drive shaft handle portion design oil seal with the oil blanket cooperation. In this disclosure, the movable joint is pressed on the side gear, so the shaft rod does not generate play, thereby avoiding the problem of oil leakage failure after the oil seal block is abraded due to the play.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

FIG. 1 is a schematic illustration of an assembled construction of a driveshaft assembly provided in accordance with an exemplary embodiment of the present disclosure;

FIG. 2 is an exploded schematic view of a driveshaft assembly provided in an exemplary embodiment of the present disclosure;

FIG. 3 is an enlarged cross-sectional view of a driveshaft assembly provided in an exemplary embodiment of the present disclosure at the location where the shaft connects to the movable joint;

FIG. 4 is a schematic structural view of a shaft provided in an exemplary embodiment of the present disclosure;

FIG. 5 is an exploded view of a three-pin segment belt roller set provided in an exemplary embodiment of the present disclosure;

FIG. 6 is a cross-sectional view of a driveshaft assembly provided in an exemplary embodiment of the present disclosure;

FIG. 7 is a cross-sectional view of the driveshaft assembly of FIG. 6 at A-A;

FIG. 8 is a cross-sectional view of the driveshaft assembly of FIG. 6 at B-B.

Description of the reference numerals

1-fixed joint, 2-movable joint, 21-slideway, 22-anti-falling clamp spring groove, 3-shaft lever, 31-shaft lever ball head, 32-first clamping part, 33-ball pin clamp spring groove, 4-elastic part, 5-shaft head connecting ball, 6-three-pin joint with roller set, 61-three pin shaft, 611-second clamping part, 612-three pin shaft body, 62-roller pin, 63-inner ring roller, 64-outer ring roller, 65-retainer ring, 66-retainer ring clamp spring, 7-ball pin clamp spring, 8-anti-falling clamp spring, 9-sheath, 10-small clamp, 11-lining ring and 12-large clamp.

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, unless otherwise specified, use of directional terms such as "upper, lower, left, and right" generally means that they are defined with reference to the drawing plane directions of the corresponding drawings. "inner and outer" refer to the inner and outer of the respective component profiles. The terms "first," "second," and the like are used herein to distinguish one element from another, and are not intended to be sequential or important. In addition, when the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements, unless otherwise indicated.

The present disclosure provides a drive shaft assembly, as shown in fig. 1 to 8, which includes a fixed joint 1 for connection with a drive hub (not shown), a movable joint 2 for connection with a differential side gear (not shown), and a shaft rod 3 having both ends connected to the fixed joint 1 and the movable joint 2, respectively. In the present disclosure, the moving joint 2 may be a three-pin yoke, specifically, a three-pin yoke including a cavity for an end of the shaft 3 to extend into and a connecting rod for spline-fitting with a differential side gear. The movable joint 2 is provided with an elastic piece 4, two ends of the elastic piece 4 are fixedly connected with the end part of the shaft rod 3 and the movable joint 2 respectively, and the elastic piece 4 is configured to be always in a compression state so as to provide a force for pushing the movable joint 2 towards the direction of the differential side gear.

In general, the greater the compression of the elastic member 4, the greater the elastic force, whereas the smaller the compression of the elastic member 4, the smaller the elastic force. But the elastic force is more than 1000N in the whole process so as to ensure the stability of the connection of the movable joint 2 and the side gear.

In the embodiment shown in fig. 3 and 6, the elastic member 4 is disposed inside the chamber of the mobile joint 2, and one end of the elastic member 4 is fixedly connected to the end of the shaft 3 extending into the chamber of the mobile joint 2, and the other end is fixedly connected to the right bottom wall of the chamber of the mobile joint 2. Alternatively, the elastic member 4 may be a conical spring, a small end of the conical spring is fixedly connected with the end of the shaft 3, and a large end of the conical spring is fixedly connected with the movable joint 2. The big end of the conical spring is fixedly connected with the movable joint 5, so that the contact area of the conical spring and the movable joint can be increased, and more stable jacking force can be provided.

It should be understood that the use of the elastic member 4 is not limited in the present disclosure, and any other component capable of providing an elastic force, such as rubber, may be used instead of the spring used in the above embodiment. Further, the diameter and length of the elastic member are not limited in this disclosure except for the material used, as long as the elastic force can be maintained to be greater than 1000N.

During the running of the vehicle, the elastic member 4 has an elastic force (refer to the arrow at the left in fig. 6) to the shaft 3 because the elastic member 4 is always in a compressed state, and at the same time, because the fixed joint 1 is not in a relative position (the fixed joint 1 is in spline connection with the driving hub), the elastic member 4 also has an opposite force (refer to the arrow at the right in fig. 6) to the movable joint 2, in other words, the elastic member 4 also provides a force pushing the movable joint 2 towards the direction of the differential side gear (refer to the arrow at the right in fig. 6), so that the movable joint 2 can be always pressed against the differential side gear.

Through the technical scheme, the elastic component 4 produces because of the compression and orders about the power that the movable joint 2 compresses tightly on differential mechanism side gear, compare in the mode that the jump ring was fixed the movable joint in side gear in the correlation technique adoption, owing to need not to be equipped with the jump ring, consequently, the process that the movable joint 2 inserted side gear is lighter, and owing to do not have the axial positioning of jump ring, it is also easier during the dismantlement, only need pull down the one end of fixed joint 1 in advance when dismantling, just can easily pull out the movable joint 2 from side gear, the problem of the drive shaft that leads to because of the pull out power is too big and gearbox damages has been avoided. Meanwhile, the effective length of the spline can be increased due to the fact that a clamp spring groove does not need to be machined in the spline. In the running process of the vehicle, the pushing force of the elastic piece to the movable joint 2 exists all the time, so that the driving shaft can be prevented from being accidentally disengaged from the side gear.

In addition, this disclosed drive shaft assembly, owing to cancelled the design of jump ring, consequently can avoid producing when adopting jump ring connected mode because of the existence of tolerance need leave the assembly gap, lead to the jump problem of jump ring production in the semi-axis then, in order to avoid the oil leak, usually at drive shaft handle portion design oil seal with the oil blanket cooperation. In the present disclosure, the movable joint 2 is pressed on the side gear, so the shaft rod 3 does not generate play, thereby avoiding oil leakage failure after the oil seal block is abraded due to the play.

Since the fixed link 1 is connected to the driving hub, the axle 3 will also swing as the vehicle jumps up and down (e.g. on a road with poor road conditions). According to an embodiment of the present disclosure, referring to fig. 2 to 4 simultaneously, an end of the shaft 3 for connecting with the moving joint 2 is provided with a shaft ball 31, and optionally, the shaft ball 31 may be integrally formed at the end of the shaft 3 to improve the strength of the connection between the body of the shaft 3 and the shaft ball 31. A spindle head connecting ball 5 is further provided in the traveling joint 2, and the spindle head connecting ball 5 is configured in a hollow shape so as to be capable of covering the outside of the shaft lever ball head 31. The elastic member 4 is disposed between the stub shaft connecting ball 5 and the moving joint 2.

Through the technical scheme, a spherical hinge structure can be formed between the shaft rod 3 and the movable joint 2, and the spherical hinge structure can provide different swing angles for the shaft rod 3 and always keep the elastic part 4 to be only stressed by axial force. In detail, in the running process of the vehicle, the shaft lever 3 swings along with the vertical jumping of the vehicle, and in the process, the shaft lever ball head 31 and the shaft head connecting ball 5 keep concentric, namely under the spherical hinge structure, the shaft lever 3 swings at any angle, and the shaft head connecting ball 5 keeps the axial movement unchanged.

In order to compensate for the change in the axial length of the shaft 3 during the run-out of the vehicle, the shaft 3 should be able to slide smoothly in the traveling joint 2. According to an embodiment of the present disclosure, as shown in fig. 2 to 5, the driving shaft assembly of the present disclosure further includes a three-pin segment belt roller set 6 slidably disposed in the cavity of the moving segment 2 along the axial direction, and the three-pin segment belt roller set 6 is coaxially and rotatably sleeved on the end of the shaft 3. The three-pin joint belt roller group 6 comprises a three-pin shaft 61 sleeved at the end of the shaft rod 3 and three rolling assemblies arranged on the peripheral wall of the three-pin shaft 61 at intervals along the radial direction, and a slide way 21 for the rolling assemblies to slide inside is arranged on the inner wall of the cavity of the movable joint 2.

Optionally, the outer peripheral surface of the end portion of the shaft lever 3 is provided with a first clamping portion 32 along the circumferential direction, the first clamping portion 32 may be configured as a spline or a structure with a similar function, the inner peripheral surface of the three-pin shaft 61 is provided with a second clamping portion 611 along the circumferential direction for cooperating with the first clamping portion 32, the outer peripheral surface of the shaft lever 3 is further provided with a ball pin clamping spring groove 33 for accommodating the ball pin clamping spring 7, the three-pin shaft 61 is connected with the shaft lever 3 coaxially and rotatably through the ball pin clamping spring 7, that is, the three-pin shaft 61 is outwards popped out after being installed through the ball pin clamping spring 7 to connect the three-pin shaft 61 and the shaft lever 3 together, and the three-pin shaft 61 can be rotated together with the shaft lever 3 or slide along the axial direction.

With continued reference to fig. 5, the rolling assembly may include a roller pin 62, an inner ring roller 63, and an outer ring roller 64, which are sequentially sleeved on the shaft body 612 of the three-pin shaft 611 from inside to outside. Specifically, splines are respectively arranged on the inner and outer circumferential surfaces of the needle rollers 62, the inner ring roller 63 is sleeved on the outer side of the needle rollers 62 and can rotate relative to the three-pin shaft body 612, and the outer ring roller 64 is sleeved on the outer side of the inner ring roller 63 and can rotate relative to the inner ring roller 63. The three-pin joint belt roller group 6 can further comprise a retainer ring 65 stopping at the outer side of the inner ring roller 63 to prevent the inner ring roller 62 from being separated from the three-pin shaft body 612, and the retainer ring 65 is arranged on the shaft body 612 of the three-pin shaft 61 through the retainer ring clamp spring 66.

Because the elastic component 4 in the drive shaft assembly disclosed herein is always kept in a compressed state, in order to prevent the elastic force of the elastic component 4 from pushing the roller set 6 with the three-pin joint out of the cavity of the moving joint 2, or to avoid the roller set 6 with the three-pin joint from coming off due to improper operation in the carrying process, according to an embodiment of the present disclosure, as shown in fig. 3, an anti-falling snap spring groove 22 is provided on the inner wall of the cavity of the moving joint 2 at the opening, the drive shaft assembly further includes an anti-falling snap spring 8 for preventing the roller set 6 with the three-pin joint from coming off from the moving joint 2 along the axial direction, and the shape of the anti-falling snap spring 8 is adapted to the anti-falling snap spring groove 22. In the present disclosure, the anti-drop snap spring groove 22 may be provided to extend along the inner wall of the chamber of the moving joint 2 by one turn.

One way to assemble the components of the drive shaft assembly is provided below, for example, in conjunction with fig. 2, 6-8. The drive shaft assembly further comprises a jacket 9 arranged on the outside of the joint of the shaft 3 and the movable joint 2, the jacket 9 is configured to be axially telescopic, the small end of the jacket 9 is clampingly mounted on the inner hoop groove of the shaft 3 by a small hoop 10, the large end of the jacket 9 is clampingly mounted on the outside of the movable joint 2 by a collar 11 and a large hoop 12, and the assembled drive shaft assembly is shown in fig. 1.

According to a second aspect of the present disclosure, there is also provided a vehicle including the drive axle assembly of any one of the above embodiments, and having all the advantages of the drive axle assembly, which will not be described herein again.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, various possible combinations will not be separately described in this disclosure.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims

1. A driving shaft assembly comprises a fixed joint (1) connected with a driving hub, a movable joint (2) connected with a differential half-shaft gear and a shaft rod (3) of which two ends are respectively connected with the fixed joint (1) and the movable joint (2), and is characterized in that an elastic piece (4) of which two ends are respectively fixedly connected with the end part of the shaft rod (3) and the movable joint (2) is arranged in the movable joint (2), and the elastic piece (4) is configured to be always in a compression state so as to provide a force for pushing the movable joint (2) towards the direction of the differential half-shaft gear.

2. The drive shaft assembly according to claim 1, wherein the elastic member (4) is a conical spring, a small end of the conical spring is fixedly connected with the end of the shaft rod (3), and a large end of the conical spring is fixedly connected with the movable joint (2).

3. The drive axle assembly according to claim 1, characterized in that the end of the axle (3) for connection with the traveling joint (2) is provided with an axle head ball (31), in which traveling joint (2) a head connection ball (5) is further provided, which head connection ball (5) is configured hollow to be able to cover the outside of the axle head ball (31), and the elastic member (4) is provided between the head connection ball (5) and the traveling joint (2).

4. A drive axle assembly according to claim 3, wherein the axle ball (31) is integrally formed at the end of the axle (3).

5. The driving shaft assembly according to claim 1, further comprising a three-pin segment belt roller set (6) axially slidably disposed in the cavity of the moving segment (2), wherein the three-pin segment belt roller set (6) is coaxially and rotatably sleeved on the end of the shaft rod (3), the three-pin segment belt roller set (6) comprises a three-pin shaft (61) for being sleeved on the end of the shaft rod (3) and three rolling components radially and intermittently disposed on the outer peripheral wall of the three-pin shaft (61), and a slide way (21) for the rolling components to slide inside is disposed on the inner wall of the cavity of the moving segment (2).

6. The drive shaft assembly according to claim 5, wherein the rolling component comprises a roller pin (62), an inner ring roller (63) and an outer ring roller (64) which are sleeved on the shaft body of the three-pin shaft (61) from inside to outside in sequence, the three-pin joint belt roller set (6) further comprises a retainer ring (65) which is stopped at the outer side of the inner ring roller (63), and the retainer ring (65) is arranged on the shaft body of the three-pin shaft (61) through a retainer ring clamp spring (66).

7. The drive shaft assembly according to claim 6, wherein an outer peripheral surface of an end portion of the shaft lever (3) is circumferentially provided with a first catching portion (32), an inner peripheral surface of the three-pin shaft (61) is circumferentially provided with a second catching portion (611) for cooperating with the first catching portion (32), the outer peripheral surface of the shaft lever (3) is further provided with a ball pin catch groove (33) for accommodating a ball pin catch (7), and the three-pin shaft (61) is coaxially and rotatably connected with the shaft lever (3) through the ball pin catch (7).

8. The drive shaft assembly according to claim 5, wherein an anti-release clamp spring groove (22) is formed in the inner wall of the cavity of the moving joint (2) at the opening, the drive shaft assembly further comprises an anti-release clamp spring (8) for preventing the three-pin joint belt roller set (6) from axially releasing from the moving joint (2), and the shape of the anti-release clamp spring (8) is adapted to the anti-release clamp spring groove (22).

9. The driveshaft assembly according to claim 1, further comprising a jacket (9) disposed outside a junction of the shaft (3) and the moving joint (2), the jacket (9) being configured to be axially retractable, a small end of the jacket (9) being clampingly mounted on an inner clamp groove of the shaft (3) by a small clamp (10), and a large end of the jacket (9) being clampingly mounted outside the moving joint (2) by a collar (11) and a large clamp (12).

10. A vehicle comprising a drive axle assembly according to any one of claims 1 to 9.