Drive axle and automobile

Abstract

The utility model relates to the technical field of automobile parts, in particular to a drive axle and an automobile. The drive axle comprises an axle tube, a half shaft and a bearing, wherein the half shaft is rotationally connected into the axle tube through the bearing; the first limiting groove is formed in the inner wall of the axle tube, and the first limiting groove is used for containing at least part of the outer ring of the bearing; the second limiting groove is formed in the outer wall of the half shaft, and the second limiting groove is used for containing at least part of an inner ring of the bearing; according to the drive axle and the automobile provided by the invention, parts in the axle tube can be prevented from being damaged due to water entering the axle tube.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile parts, and in particular to a drive axle and an automobile. BACKGROUND

[0002] The drive axle is an important component of the automobile chassis, which includes a bridge pipe, a main reducer, a differential and a half shaft, etc., and is responsible for transmitting the power of the engine or motor to the wheels through the transmission shaft to realize the driving and steering functions of the vehicle.

[0003] The drive axle of the related art includes a bridge pipe, a half shaft, a bearing seat and a bearing. When the half shaft needs to be installed into the bridge pipe, the bearing seat needs to be connected with the bridge pipe, the half shaft needs to be installed with the bearing, and then the bearing needs to be assembled onto the bearing seat, so that the bearing seat can fix the bearing. At this time, the half shaft can be rotatably connected in the bridge pipe through the bearing.

[0004] However, in order to prevent water leakage between the bearing seat and the bridge pipe, it is usually necessary to apply sealant between the bearing seat and the bridge pipe. However, the sealant may fail during long-term use, which may cause the internal components of the bridge pipe to be at risk of damage. INVENTION CONTENTS

[0005] The embodiments of the present application provide a drive axle and an automobile to solve the technical problem that the sealant between the bearing seat and the bridge pipe of the related art is prone to failure, thereby causing the internal components of the bridge pipe to be at risk of damage.

[0006] In a first aspect, the embodiments of the present application provide a drive axle, comprising:

[0007] a bridge pipe, a half shaft and a bearing, wherein the half shaft is rotatably connected in the bridge pipe through the bearing;

[0008] a first limiting groove, wherein the first limiting groove is arranged on the inner wall of the bridge pipe, and the first limiting groove is used for accommodating at least part of the outer ring of the bearing;

[0009] a second limiting groove, wherein the second limiting groove is arranged on the outer wall of the half shaft, and the second limiting groove is used for accommodating at least part of the inner ring of the bearing.

[0010] In some embodiments, the first limiting groove penetrates the bridge pipe along one end of the axial direction of the half shaft, and the second limiting groove penetrates the half shaft along the other end of the axial direction of the half shaft.

[0011] In some embodiments, a first limiting assembly is further included, and the first limiting assembly is used for preventing the outer ring from disengaging from the first limiting groove.

[0012] In some embodiments, the first limiting assembly comprises:

[0013] A baffle plate is arranged to abut against the outer ring;

[0014] A first connecting piece is arranged on the baffle plate, and a connecting portion is arranged on the bridge tube in parallel or perpendicular to the axial direction of the half shaft, and the first connecting piece is arranged to be inserted into the connecting portion to detachably connect the baffle plate to the bridge tube.

[0015] In some embodiments, the baffle plate comprises at least two connecting plates that are connected to each other, and each of the connecting plates abuts against the outer ring.

[0016] In some embodiments, a second limiting assembly is further arranged to prevent the inner ring from being separated from the second limiting groove.

[0017] In some embodiments, the second limiting assembly comprises a retaining ring that is sleeved on the half shaft, and the retaining ring is arranged to abut against the inner ring.

[0018] In some embodiments, a dust cover and a second connecting piece are further arranged, the second connecting piece is arranged to detachably connect the dust cover to the half shaft, and the dust cover is arranged to prevent dust from entering through a gap between the bridge tube and the half shaft.

[0019] In some embodiments, a supporting assembly is further arranged inside the bridge tube, and the supporting assembly is arranged to support the bridge tube when the half shaft is inserted into the bridge tube.

[0020] In a second aspect, the embodiments of the present application provide an automobile, which comprises a vehicle body and the drive axle arranged on the vehicle body.

[0021] The embodiments of the present application provide a drive axle and an automobile. The drive axle provided by the present application comprises a first limiting groove and a second limiting groove. When the half shaft and the bridge tube need to be installed, the inner ring of the bearing is arranged in the second limiting groove, so that the bearing drives the inner ring to be fixed to the half shaft, and then the half shaft drives the outer ring of the bearing to be arranged in the first limiting groove, so that the half shaft is rotatably connected to the bridge tube through the bearing. The first limiting groove and the second limiting groove can accommodate the outer ring and the inner ring of the bearing respectively, so that the first limiting groove and the second limiting groove limit and fix the bearing, without the need of an additional bearing seat for bearing installation and the need of sealing glue for fixation. Therefore, there is no water leakage gap caused by the bearing seat on the bridge tube, so as to prevent the damage of the components in the bridge tube caused by water entering the bridge tube. In addition, by canceling the bearing seat, the number of components to be installed by the installer during the installation of the bearing is reduced, so as to improve the installation efficiency of the bearing. BRIEF DESCRIPTION OF DRAWINGS

[0022] The drawings incorporated into the specification and forming a part thereof show embodiments consistent with the present application and, together with the description, serve to explain the principles of the application.

[0023] Figure 1 The structural schematic diagram of the drive axle provided in the present application is shown in the following figure.

[0024] Figure 2 The structural schematic diagram of the axle pipe and the half shaft in the present application is shown in the following figure. Figure 1

[0025] Figure 3 The enlarged view of the A part in the present application is shown in the following figure. Figure 2

[0026] Figure 4 The partial structural schematic diagram of the half shaft and the bearing in the present application is shown in the following figure. Figure 3

[0027] Figure 5 The structural schematic diagram of the axle pipe in the present application is shown in the following figure. Figure 2

[0028] Figure 6 The partial structural schematic diagram of the axle pipe and the motor flange in the present application is shown in the following figure. Figure 2

[0029] Figure 7 The structural schematic diagram of the vertical part and the horizontal part of the drive axle provided in the present application is shown in the following figure.

[0030] Figure 8 The structural schematic diagram of the baffle in the present application is shown in the following figure. Figure 3

[0031] Explanation of reference signs:

[0032] 100, axle pipe; 110, first limiting groove;

[0033] 120, motor flange; 121, pin plug; 122, protrusion;

[0034] 200, half shaft; 210, second limiting groove; 220, flange;

[0035] 300, bearing; 310, outer ring; 320, inner ring;

[0036] 400, reducer integrated motor assembly; 410, housing;

[0037] 500, brake drum;

[0038] 600, first limiting assembly;

[0039] 610, baffle; 611, vertical part; 612, horizontal part; 613, connecting plate;

[0040] ​​​​​​620, first connecting piece; 630, connecting part;

[0041] 700, second limiting assembly;

[0042] 710, retaining ring; 711, first retaining ring; 712, second retaining ring; 713, ABS ring gear;

[0043] 800, dust cover; 810, second connecting piece;

[0044] 900, support assembly.

[0045] The specific embodiments of the application have been shown by the above drawings, and will be described in more detail hereinafter. These drawings and the written description are not intended to restrict the scope of the concept of the application in any way, but to illustrate the concept of the application for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0046] The exemplary embodiments will be described in detail herein with reference to the attached drawings. The following description is made with reference to the accompanying drawings in which like reference numerals refer to like elements, unless the context of use indicates otherwise. The following description of exemplary embodiments is not representative of all embodiments consistent with the present application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the present application as detailed in the appended claims.

[0047] The drive axle of the related art comprises an axle tube, a half shaft, a bearing seat and a bearing. When the half shaft needs to be installed into the axle tube, the bearing seat needs to be connected with the axle tube, the half shaft needs to be installed with the bearing, and then the bearing is assembled onto the bearing seat, so that the bearing seat can fix the bearing, and at this time the half shaft can be rotatably connected in the axle tube through the bearing.

[0048] However, during the driving of the automobile, water splashed by the wheels can splash on the drive axle. In order to prevent water leakage between the bearing seat and the axle tube, it is usually necessary to smear sealant between the bearing seat and the axle tube. However, the sealant may be invalid due to the bumping of the vehicle or the service life of the sealant itself during long-term use. The half shaft is sleeved with an ABS ring gear, which is an important part of the automobile anti-lock braking system. The ABS ring gear cooperates with the ABS sensor to monitor the rotational speed of the wheels. If the ABS ring gear is eroded by water, the ABS ring gear may be invalid.

[0049] In order to solve the above technical problems, the application provides a drive axle and a vehicle. When the half shaft needs to be assembled, the half shaft is arranged in the inner ring of the bearing. At this time, the bearing can drive the inner ring to move into the second limiting groove. The retainer ring is sleeved on the half shaft, so that the retainer ring limits the inner ring in the second limiting groove. The half shaft drives the bearing to move into the axle pipe. At this time, the bearing can drive the outer ring to move into the first limiting groove. The first connecting piece is used to fix the baffle plate on the axle pipe. At this time, the baffle plate can fix the outer ring in the first limiting groove. The half shaft is rotatably connected to the axle pipe through the bearing. The first limiting groove and the second limiting groove can accommodate the outer ring and the inner ring of the bearing respectively, so that the first limiting groove and the second limiting groove limit and fix the bearing. No additional bearing seat is needed for bearing installation, and no sealing glue is needed for fixing. Therefore, there is no water leakage gap caused by the bearing seat on the axle pipe, so as to prevent water from entering the axle pipe and causing damage to the parts in the axle pipe. In addition, by canceling the bearing seat, the number of parts to be installed by the installer during the bearing installation is reduced, thereby improving the installation efficiency of the bearing.

[0050] The technical solutions of the application and how the technical solutions of the application solve the above technical problems will be described in detail below with specific examples. The following specific examples can be combined with each other, and the same or similar concepts or processes can not be described again in some examples. The embodiments of the application will be described below with reference to the drawings.

[0051] In combination Figures 1 to 5 , the embodiments of the application provide a drive axle, which comprises:

[0052] The axle pipe 100, the half shaft 200 and the bearing 300 are rotatably connected in the axle pipe 100 through the bearing 300;

[0053] The first limiting groove 110 is arranged on the inner wall of the axle pipe 100, and is used to accommodate at least part of the outer ring 310 of the bearing 300;

[0054] The second limiting groove 210 is arranged on the outer wall of the half shaft 200, and is used to accommodate at least part of the inner ring 320 of the bearing 300.

[0055] In the embodiment, the drive axle has two axle pipes 100 and two half shafts 200. One set of axle pipe 100 and half shaft 200 is a left connecting shell and a left connecting shaft, and the other set of axle pipe 100 and half shaft 200 is a right connecting shell and a right connecting shaft. The axle pipe 100 and the half shaft 200 can be a left connecting shell and a left connecting shaft, or a right connecting shell and a right connecting shaft. The drive axle further comprises a reducer integrated motor assembly 400, which is arranged between the left connecting shell and the right connecting shell.

[0056] In the embodiment, the first limiting groove 110 is arranged along the circumference of the inner wall of the bridge pipe 100, and the second limiting groove 210 is arranged along the circumference of the outer wall of the half shaft 200.

[0057] In the application, by adopting the arrangement of the first limiting groove 110 and the second limiting groove 210, when the half shaft 200 and the bridge pipe 100 need to be installed, the inner ring 320 of the bearing 300 is installed in the second limiting groove 210, so that the bearing 300 drives the inner ring 320 to be fixed with the half shaft 200, and then the outer ring 310 of the bearing 300 is installed into the first limiting groove 110, so that the half shaft 200 is rotatably connected in the bridge pipe 100 through the bearing 300. The first limiting groove 110 and the second limiting groove 210 can accommodate the outer ring 310 and the inner ring 320 of the bearing 300 respectively, so that the first limiting groove 110 and the second limiting groove 210 limit and fix the bearing 300, without the need for an additional bearing 300 seat to install the bearing 300, and without the need for sealing glue to fix, so that there is no water leakage gap on the bridge pipe 100 due to the bearing 300 seat, thereby preventing water from entering the bridge pipe 100 to damage the components in the bridge pipe 100; and by canceling the bearing 300 seat, the number of components installed by the installer when installing the bearing 300 is reduced, thereby improving the installation efficiency of the bearing 300.

[0058] As shown in Figure 6 In the embodiment, the reducer integrated motor assembly 400 includes a housing 410, a motor flange 120 is pressed on the outer wall of the bridge pipe 100, a pin plug 121 for plugging on the bridge pipe 100 is provided on the motor flange 120, the pin plug 121 can position the motor flange 120 on the bridge pipe 100; the motor flange 120 is detachably connected with the housing 410 through bolts; a protrusion 122 is arranged on the motor flange 120 along the circumference of the motor flange 120, and the protrusion 122 is used for abutting against the inner wall of the housing 410.

[0059] In combination with Figures 1 to 5 , the first limiting groove 110 penetrates the bridge pipe 100 along one end of the half shaft 200 in the axial direction, and the second limiting groove 210 penetrates the half shaft 200 along the other end of the half shaft 200 in the axial direction.

[0060] In the embodiment, the left connecting shaft and the right connecting shaft are integrally provided with flanges 220 at the ends away from each other, the flanges 220 are used for being fixed with the driving wheels of the automobile, the drive axle further includes a brake drum 500, the brake drum 500 is detachably connected between the flanges 220 and the bridge pipe 100 through bolts and nuts, the brake drum 500 is used for braking the driving wheels, and the brake drum 500 belongs to the prior art. The specific structure of the brake drum 500 will not be described again.

[0061] In the embodiment, the first limiting groove 110 is arranged to penetrate the bridge pipe 100 at the end of the half shaft 200 close to the flange 220, and the second limiting groove 210 is arranged to penetrate the bridge pipe 100 at the end of the half shaft 200 away from the flange 220.

[0062] In the application, the first limiting groove 110 is arranged to penetrate the bridge pipe 100 at one end of the half shaft 200 in the axial direction, and when the outer ring 310 of the bearing 300 needs to be installed, the outer ring 310 of the bearing 300 is moved into the bridge pipe 100, so that the outer ring 310 of the bearing 300 is moved into the bottom of the first limiting groove 110 along one end of the first limiting groove 110, thereby facilitating the installation of the outer ring 310 of the bearing 300 and improving the convenience of the installation of the outer ring 310 of the bearing 300; the second limiting groove 210 is arranged to penetrate the bridge pipe 100 at the other end of the half shaft 200 in the axial direction, so that the penetrating direction of the second limiting groove 210 is opposite to the penetrating direction of the first limiting groove 110, so that when the half shaft 200 is arranged in the bridge pipe 100, the closed ends of the first limiting groove 110 and the second limiting groove 210 that are not penetrated can abut against both sides of the bearing 300, so that the first limiting groove 110 and the second limiting groove 210 can simultaneously limit the bearing 300 at both ends of the half shaft 200 in the axial direction, thereby preventing the bearing 300 from being separated along the same end of the first limiting groove 110 and the second limiting groove 210, and improving the fixing strength of the bearing 300.

[0063] In combination Figures 1 to 5 , the drive axle further comprises a first limiting assembly 600, and the first limiting assembly 600 is used to prevent the outer ring 310 from being separated from the first limiting groove 110.

[0064] In the application, the first limiting assembly 600 is arranged to prevent the outer ring 310 from being separated from the first limiting groove 110, thereby improving the fixing strength of the outer ring 310 of the bearing 300 in the first limiting groove 110.

[0065] In combination Figures 1 to 5 , the first limiting assembly 600 comprises:

[0066] a baffle plate 610, the baffle plate 610 is used to abut against the outer ring 310;

[0067] a first connecting piece 620 and a connecting portion 630, the first connecting piece 620 is arranged on the baffle plate 610, the connecting portion 630 is arranged on the bridge pipe 100 in parallel to or perpendicular to the axial direction of the half shaft 200, and the first connecting piece 620 is used to be inserted with the connecting portion 630 to detachably connect the baffle plate 610 on the bridge pipe 100.

[0068] In the embodiment, the first connecting member 620 comprises a plurality of first connecting bolts, the connecting portion 630 is a connecting hole, and the connecting hole is arranged on the bridge pipe 100. When the connecting portion 630 is arranged on the bridge pipe 100 along an axial direction parallel to the half shaft 200, the baffle 610 is perpendicular to an axis of the bridge pipe 100, the baffle 610 is located at an end of the bridge pipe 100 close to the flange 220, the first connecting bolts are arranged on the baffle 610, and the first connecting bolts are inserted into and screwed into the connecting holes at the end of the bridge pipe 100, so that the baffle 610 can abut against the outer ring 310 of the bearing 300, thereby limiting the bearing 300 in the first limiting groove 110.

[0069] As shown in Figure 7 some embodiments, when the connecting portion 630 is arranged on the bridge pipe 100 along an axial direction perpendicular to the half shaft 200, the baffle 610 comprises a vertical portion 611 and a horizontal portion 612 at this time. The vertical portion 611 is located at the end of the bridge pipe 100, the horizontal portion 612 is located at a side of the bridge pipe 100 away from the half shaft 200, the horizontal portion 612 is perpendicular to the vertical portion 611, and the horizontal portion 612 is connected with the vertical portion 611. The first connecting bolts are arranged on the horizontal portion 612, and the first connecting bolts are inserted into and screwed into the connecting holes in the side wall of the bridge pipe 100.

[0070] In the application, when the outer ring 310 of the bearing 300 is fixed in the first limiting groove 110, the baffle 610 is fixed on the bridge pipe 100 through the first connecting member 620, so that the baffle 610 can abut against the outer ring 310, thereby preventing the outer ring 310 from being separated from the first limiting groove 110, and improving the fixing strength of the outer ring 310 in the first limiting groove 110. By arranging the first connecting member 620 along an axial direction parallel to the half shaft 200 or an axial direction perpendicular to the half shaft 200, the assembly of the first connecting member 620 can be prevented from being affected by other components in the bridge pipe 100, thereby improving the convenience of assembling the bearing 300.

[0071] As shown in Figure 8 the baffle 610 comprises at least two connecting plates 613 that are spliced with each other, and each connecting plate 613 abuts against the outer ring 310.

[0072] In the embodiment, the baffle 610 comprises two connecting plates 613, the connecting plates 613 are arranged in a semicircular ring shape, and the two connecting plates 613 are spliced to form a circular ring-shaped baffle 610. The two connecting plates 613 are detachably connected to the bridge pipe 100 through the first connecting bolts, so that the two connecting plates 613 can be spliced.

[0073] In the application, the baffle 610 is sleeved on the bridge pipe 100 through the adoption of the two connecting plates 613, so that the installation of the baffle 610 is not affected by the large-diameter components on the bridge pipe 100, and the convenience of the installation of the baffle 610 is improved.

[0074] In combination Figures 1 to 5 The drive axle further comprises a second limiting assembly 700, and the second limiting assembly 700 is used to prevent the inner ring 320 from being separated from the second limiting groove 210.

[0075] In the application, the second limiting assembly 700 can prevent the inner ring 320 from being separated from the second limiting groove 210, so that the fixing strength of the inner ring 320 of the bearing 300 fixed in the second limiting groove 210 is improved.

[0076] In combination Figures 1 to 5 The second limiting assembly 700 comprises a retaining ring 710, the retaining ring 710 is sleeved on the half shaft 200, and the retaining ring 710 is used to abut against the inner ring 320.

[0077] In the embodiment, the retaining ring 710 comprises a first retaining ring 711 and a second retaining ring 712, the first retaining ring 711 is pressed on a side of the inner ring 320 away from the flange 220, so that the first retaining ring 711 limits the inner ring 320, the second retaining ring 712 is elastically arranged, the second retaining ring 712 is pressed on a side of the first retaining ring 711 away from the inner ring 320, so that the second retaining ring 712 limits the first retaining ring 711 and the inner ring 320, and the first retaining ring 711 is pressed with an ABS gear ring 713.

[0078] In the application, the retaining ring 710 is sleeved on the half shaft 200, so that the assembly strength between the retaining ring 710 and the half shaft 200 is improved, and the retaining ring 710 is prevented from being separated from the half shaft 200; the retaining ring 710 abuts against the inner ring 320, so that the inner ring 320 is prevented from being separated from the second limiting groove 210, and the fixing strength of the inner ring 320 of the bearing 300 fixed in the second limiting groove 210 is improved.

[0079] In combination Figures 1 to 5 The drive axle further comprises a dust cover 800 and a second connecting piece 810, the second connecting piece 810 is used to detachably connect the dust cover 800 on the half shaft 200, and the dust cover 800 is used to prevent dust from entering along the gap between the bridge pipe 100 and the half shaft 200.

[0080] In the embodiment, one side of the dust cover 800 extends to the position where the flange 220 is located and abuts against the flange 220, the second connecting member 810 includes a second connecting bolt, the second connecting bolt is provided on the dust cover 800, and the second connecting bolt is used for being threadedly connected with the flange 220, the other side of the dust cover 800 extends between the outer ring 310 and the inner ring 320 and blocks the outer ring 310 and the inner ring 320; the baffle 610 is oppositely arranged to the side of the dust cover 800 close to the bearing 300; the shape of the dust cover 800 can be adaptively adjusted according to the need, and the dust cover 800 and the baffle 610 are arranged in the interior of the brake drum 500.

[0081] In the application, by adopting the arrangement of the dust cover 800, the dust cover 800 can prevent dust and other impurities from entering between the bridge tube 100 and the half shaft 200 along the gap between the bridge tube 100 and the half shaft 200, thereby preventing the dust and other impurities from affecting the use of the bearing 300 and indirectly prolonging the service life of the bearing 300; by adopting the arrangement of the second connecting member 810, the dust cover 800 can be installed and dismounted when the bearing 300 needs to be disassembled and replaced.

[0082] In combination Figures 1 to 5 , the drive axle further comprises a supporting assembly 900, the supporting assembly 900 is arranged in the interior of the bridge tube 100, and the supporting assembly 900 is used for supporting the bridge tube 100 when the half shaft 200 is inserted into the bridge tube 100.

[0083] In the embodiment, the supporting assembly 900 includes a supporting ring, the supporting ring is pressed in the bridge tube 100, and the supporting ring is located away from the flange 220; when the half shaft 200 is inserted into the bridge tube 100 along the end of the bridge tube 100 away from the reducer integrated motor assembly 400, the half shaft 200 can be inserted into the supporting ring, so that the supporting ring supports the half shaft 200 when the half shaft 200 moves into the bridge tube 100.

[0084] In the application, by adopting the arrangement of the supporting assembly 900, when the half shaft 200 is inserted into the bridge tube 100, because the length of the half shaft 200 is relatively long, the supporting assembly 900 can support the half shaft 200, thereby preventing the end of the half shaft 200 from colliding with the inner wall of the bridge tube 100, preventing the half shaft 200 from causing the inner wall of the bridge tube 100 to be damaged, and preventing the half shaft 200 from driving the components on the half shaft 200 such as the ABS ring gear 713 to move towards the inner wall of the bridge tube 100, thereby preventing the ABS ring gear 713 from colliding with the inner wall of the bridge tube 100 and being damaged, and indirectly prolonging the service life of the components in the bridge tube 100 and on the half shaft 200.

[0085] In other embodiments, the support assembly 900 can also be a plurality of protrusions arranged on the inner wall of the bridge pipe 100. When the half shaft 200 is inserted into the bridge pipe 100, the half shaft 200 can abut against the protrusions, so that the protrusions support the half shaft 200, thereby supporting the half shaft 200 when it is inserted into the bridge pipe 100.

[0086] The embodiments of the present application also provide an automobile, which comprises a vehicle body and the drive axle of any of the above embodiments arranged on the vehicle body.

[0087] The specific structure of the drive axle has been described in detail in the above embodiments, and will not be repeated here.

[0088] The automobile provided by the embodiments of the present application is arranged with the drive axle. When the half shaft 200 needs to be assembled, the half shaft 200 is arranged in the inner ring 320 of the bearing 300. At this time, the bearing 300 can drive the inner ring 320 to move into the second limiting groove 210. The retainer ring 710 is arranged on the half shaft 200, so that the retainer ring 710 limits the inner ring 320 in the second limiting groove 210. The half shaft 200 drives the bearing 300 to move into the bridge pipe 100. At this time, the bearing 300 can drive the outer ring 310 to move into the first limiting groove 110. The first connecting piece 620 is used to fix the baffle plate 610 on the bridge pipe 100. At this time, the baffle plate 610 can fix the outer ring 310 in the first limiting groove 110, so that the half shaft 200 is rotatably connected to the bridge pipe 100 through the bearing 300. The first limiting groove 110 and the second limiting groove 210 can accommodate the outer ring 310 and the inner ring 320 of the bearing 300 respectively, so as to limit and fix the bearing 300. No additional bearing 300 seat is needed for the installation of the bearing 300, and no sealing glue is needed for fixing, so that there is no water leakage gap caused by the bearing 300 seat on the bridge pipe 100, thereby preventing water from entering the bridge pipe 100 and causing damage to the components in the bridge pipe 100. By canceling the bearing 300 seat, the number of components to be installed by the installer during the installation of the bearing 300 is reduced, thereby improving the installation efficiency of the bearing 300.

[0089] Finally, it should be noted that: after considering the specification and practicing the utility model disclosed herein, those skilled in the art will easily think of other embodiments of the utility model. The utility model is intended to cover any variations, uses or adaptations of the utility model, which follow the general principles of the utility model and include common knowledge or conventional technical means in the technical field of the utility model not disclosed by the utility model, and are not limited to the precise structures described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the utility model is only limited by the appended claims.

Claims

1. A drive axle, characterized in that Comprise: a bridge pipe (100), a half shaft (200) and a bearing (300), the half shaft (200) is rotatably connected in the bridge pipe (100) through the bearing (300); a first limiting groove (110) is arranged on the inner wall of the bridge pipe (100), the first limiting groove (110) is used for accommodating at least part of the outer ring (310) of the bearing (300); a second limiting groove (210) is arranged on the outer wall of the half shaft (200), the second limiting groove (210) is used for accommodating at least part of the inner ring (320) of the bearing (300).

2. The drive axle of claim 1, wherein, The first limiting groove (110) penetrates the bridge pipe (100) along one end of the axial direction of the half shaft (200), and the second limiting groove (210) penetrates the half shaft (200) along the other end of the axial direction of the half shaft (200).

3. The drive axle of claim 2, wherein, Further comprising a first limiting assembly (600) for preventing the outer ring (310) from disengaging from the first limiting groove (110).

4. The drive axle of claim 3, wherein, The first limiting assembly (600) comprises: a baffle plate (610) for abutting against the outer ring (310); a first connecting piece (620) arranged on the baffle plate (610) and a connecting portion (630) arranged on the bridge pipe (100) along the axial direction of the half shaft (200), the first connecting piece (620) is used for being inserted into the connecting portion (630) to detachably connect the baffle plate (610) to the bridge pipe (100).

5. The drive axle of claim 4, wherein, The baffle plate (610) comprises at least two connecting plates (613) abutting against each other, and each connecting plate (613) abuts against the outer ring (310).

6. Drive axle according to any one of claims 1-5, characterized in that Further comprising a second limiting assembly (700) for preventing the inner ring (320) from disengaging from the second limiting groove (210).

7. The drive axle of claim 6, wherein, The second limiting assembly (700) comprises a baffle ring (710) sleeved on the half shaft (200) and abutting against the inner ring (320).

8. Drive axle according to any one of claims 1-5, characterized in that Further comprising a dust cover (800) and a second connecting piece (810) for detachably connecting the dust cover (800) to the half shaft (200), the dust cover (800) is used for preventing dust from entering through the gap between the bridge pipe (100) and the half shaft (200).

9. The drive axle of any one of claims 1-5, wherein, Further comprising a supporting assembly (900) arranged inside the bridge pipe (100) and used for supporting the bridge pipe (100) when the half shaft (200) is inserted into the bridge pipe (100).

10. An automobile characterized by comprising: A drive axle comprising a vehicle body and a drive axle as claimed in any one of claims 1-9 arranged on the vehicle body.

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