Electric drive assembly structure and vehicle

Abstract

The utility model provides an electric drive assembly structure and a vehicle, the electric drive assembly structure comprises an electric drive assembly shell, a differential mechanism assembly is arranged in the electric drive assembly shell, and the differential mechanism assembly comprises a differential mechanism shell and a half axle gear; the wheel-side driving shaft sequentially penetrates through the electric driving assembly shell, the differential shell and the half axle gear, the wheel-side driving shaft is provided with a first limiting table, and when the first limiting table abuts against the side wall, away from the half axle gear, of the differential shell, the wheel-side driving shaft is matched with the half axle gear in a clamped mode through a clamping piece. Therefore, the clamping piece is only used for axially limiting the wheel-side driving shaft, and the insertion force of the wheel-side driving shaft in the insertion direction of the half axle gear is borne by the first limiting table, so that the clamping piece does not need to bear the axial force of the wheel-side driving shaft in the assembling process any more; the problem that in the prior art, due to the fact that a clamping piece needs to bear insertion force in the wheel-side driving shaft assembling process, axial limiting of the wheel-side driving shaft fails can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, and in particular to an electric drive assembly structure and a vehicle. Background Art

[0002] When the vehicle is in bumpy, turning and other driving conditions, the wheel drive shaft transmits axial force to the electric drive assembly. In the prior art, in order to prevent the wheel drive shaft from escaping from the electric drive assembly, a clip-on structure is used to axially limit the wheel drive shaft and the electric drive assembly. However, during the assembly of the wheel drive shaft, a large axial force is generated. Using only the clip-on structure for axial limitation will cause the axial limitation to fail and damage the oil seal and the electric drive assembly. Utility Model Content

[0003] In view of this, the purpose of the utility model is to propose an electric drive assembly structure and a vehicle to solve the problem in the prior art that under a large axial force, the wheel-side drive shaft and the electric drive assembly are prone to axial limit failure, thereby damaging the oil seal and the electric drive assembly.

[0004] Based on the above objectives, the first aspect of the present invention provides an electric drive assembly structure, including:

[0005] An electric drive assembly housing, wherein a differential assembly is disposed in the electric drive assembly housing, and the differential assembly includes a differential housing and a half-shaft gear;

[0006] The wheel-side drive shaft passes through the electric drive assembly housing, the differential housing and the half-shaft gear in sequence. The wheel-side drive shaft is provided with a first limit platform. When the first limit platform abuts against the side wall of the differential housing away from the half-shaft gear, the wheel-side drive shaft is engaged with the half-shaft gear through a clamping piece.

[0007] Optionally, the snap-in component is arranged at one end of the wheel-side drive shaft located in the housing of the electric drive assembly, and the half-shaft gear is provided with an open slot that snaps into engagement with the snap-in component.

[0008] Optionally, a through hole is provided in the middle of the half-axle gear for the wheel side drive shaft to pass through, and the slot is a step structure made on the side wall of the through hole, which is recessed inward along the axial direction of the through hole by the side wall of the half-axle gear away from the differential housing.

[0009] Optionally, the step surface of the step structure is an inclined surface.

[0010] Optionally, the angle between the step surface of the step structure and the axis of the wheel-side drive shaft is less than 90°.

[0011] Optionally, the step side wall of the step structure is parallel to the axis of the wheel side drive shaft.

[0012] Optionally, an oil seal is provided between the wheel-side drive shaft and the electric drive assembly housing.

[0013] Optionally, the oil seal sleeve is arranged on the periphery of the first limit platform of the wheel side drive shaft.

[0014] Optionally, the wheel side driving shaft is further provided with a second limit platform, the second limit platform is arranged away from the half-shaft gear, and the second limit platform is used to abut against the oil seal.

[0015] A second aspect of the utility model provides a vehicle, including the electric drive assembly structure provided by the first aspect of the utility model.

[0016] As can be seen from the above, the utility model provides an electric drive assembly structure and a vehicle, the electric drive assembly structure includes an electric drive assembly housing, a differential assembly is arranged in the electric drive assembly housing, and the differential assembly includes a differential housing and a half-axle gear; a wheel side drive shaft passes through the electric drive assembly housing, the differential housing and the half-axle gear in sequence, and the wheel side drive shaft is provided with a first limiting platform, when the first limiting platform abuts against the side wall of the differential housing away from the half-axle gear, the wheel side drive shaft is engaged with the half-axle gear through a clamping piece. Therefore, in the process of disassembling and assembling the wheel side drive shaft, the clamping piece is only used to axially limit the wheel side drive shaft, and the insertion force of the wheel side drive axial half-axle gear insertion direction is borne by the first limiting platform abutting against the side wall of the differential housing, so that the clamping piece does not need to bear the axial force in the assembly process of the wheel side drive shaft, which can avoid the problem of failure of the axial limiting of the wheel side drive shaft caused by the clamping piece in the prior art due to the insertion force in the assembly process of the wheel side drive shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of an exemplary electric drive assembly structure of the prior art;

[0019] Figure 2 This is a schematic diagram of the electric drive assembly structure of an embodiment of the utility model;

[0020] Figure 3 For the utility model embodiment Figure 2 A magnified schematic diagram of the middle part;

[0021] Figure 4 This is a simplified schematic diagram of the electric drive assembly structure of an embodiment of the utility model;

[0022] Figure 5 This is a schematic diagram of the connection structure between the wheel side drive shaft and the half shaft gear in an embodiment of the utility model;

[0023] Figure 6 For the utility model embodiment Figure 4 Enlarged schematic diagram of part B in the middle.

[0024] Reference numerals:

[0025] 1. Electric drive assembly housing; 2. Differential assembly; 3. Wheel-side drive shaft; 4. Snap-on; 5. Oil seal; 21. Differential housing; 22. Axle gear; 221. Snap-on slot; 31. First limit platform; 32. Second limit platform; 33. Mounting slot; 23. Cross shaft; 24. Planetary gear; 222. Circlip slot; 04. Circlip; 201. First differential bearing; 202. Second differential bearing; 51. Dust cover; 221c. Step side wall; 221d. Step surface. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0027] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the embodiments of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0028] As described in the background technology section, in the prior art, in order to prevent the wheel side drive shaft 3 from coming out of the electric drive assembly, a structural design in which a retaining spring 04 cooperates with a retaining spring groove 222 is used in the electric drive assembly, such as Figure 1As shown, the wheel side drive shaft 3 passes through the electric drive assembly housing 1, the differential housing 21 and the side gear 22 in sequence. A retaining spring 04 is provided at one end of the wheel side drive shaft 3 located in the electric drive assembly housing 1. A retaining spring groove 222 cooperating with the retaining spring 04 is provided on the side gear 22. The retaining spring groove 222 is arranged on the inner wall of the mounting hole of the side gear 22 and is arranged away from the differential housing 21. During the assembly process of the wheel side drive shaft 3, when the wheel side drive shaft 3 is disassembled and assembled many times, a large axial force will be generated. The retaining spring 04 on the wheel side drive shaft 3 transmits the axial force to the side wall of the retaining spring groove 222 away from the differential housing 21, and the side wall of the retaining spring groove 222 away from the differential housing 21 bears the axial force. Due to the large axial force, the side wall of the retaining spring groove 222 will be broken, which will further cause the axial limit failure of the wheel side drive shaft 3 and damage the oil seal 5 and the electric drive assembly. That is, the snap fit between the retaining spring 04 and the retaining spring groove 222 is not only used to achieve the limiting of the wheel side drive shaft 3 and the half-shaft gear 22, but also to withstand the axial force from the wheel side drive shaft 3. When the axial force is large, it may cause the limiting failure.

[0029] To solve the above problems, refer to Figure 2 and Figure 3 As shown, the utility model provides an electric drive assembly structure, including: an electric drive assembly housing 1, in which a differential assembly 2 is arranged, and the differential assembly 2 includes a differential housing 21 and a half-shaft gear 22; a wheel-side drive shaft 3, which passes through the electric drive assembly housing 1, the differential housing 21 and the half-shaft gear 22 in sequence, and the wheel-side drive shaft 3 is provided with a first limit platform 31. When the first limit platform 31 abuts against the side wall of the differential housing 21 away from the half-shaft gear 22, the wheel-side drive shaft 3 is clamped and matched with the half-shaft gear 22 through the clamping piece 4.

[0030] Specifically, the electric drive assembly housing 1 of the utility model is provided with a differential assembly 2, and the differential assembly 2 is rotatably mounted in the electric drive assembly housing 1 through a bearing. Figure 2 As shown, the differential assembly 2 is rotatably mounted in the electric drive assembly housing 1 through the first differential bearing 201 and the second differential bearing 202. The first differential bearing 201 and the second differential bearing 201 are spaced apart to improve the support performance of the differential assembly 2, so that the rotation of the differential assembly 2 is more stable. Further, the differential assembly 2 includes a differential housing 21 and a half-shaft gear 22; illustratively, there are two half-shaft gears 22, and the two half-shaft gears 22 are symmetrically arranged, and the wheel-side drive shaft 3 includes a wheel-side drive shaft 3 for driving the left front wheel and a wheel-side drive shaft 3 for driving the right front wheel; the two wheel-side drive shafts 3 are respectively connected to the corresponding half-shaft gears 22. For example, the wheel-side drive shaft 3 for driving the left front wheel is connected to the wheel-side drive shaft 3 for driving the right front wheel. Figure 2 The center is located in the pull-out direction of the wheel side drive shaft 3 (such as Figure 2The wheel side drive shaft 3 for driving the right front wheel is connected to the half shaft gear 22 (the arrow in b points to). Figure 2 The center is located in the direction of insertion of the wheel side drive shaft 3 (such as Figure 2 The wheel side drive shaft 3 for driving the left front wheel and the wheel side drive shaft 3 for driving the right front wheel are connected to the differential assembly 2. The installation structure of the wheel side drive shaft 3 for driving the left front wheel is described as an example in the utility model.

[0031] The wheel side drive shaft 3 in the utility model is sequentially arranged through the electric drive assembly housing 1, the differential housing 21 and the side gear 22; a first limiting platform 31 is arranged on the wheel side drive shaft 3, and when the wheel side drive shaft 3 is inserted into the electric drive assembly housing 1, the first limiting platform 31 abuts against the side wall of the differential housing 21 away from the side gear 22, and the wheel side drive shaft 3 is engaged with the side gear 22 through the clamping member 4. Therefore, during the process of disassembling and assembling the wheel side drive shaft 3, the clamping member 4 is only used to axially limit the wheel side drive shaft 3, and the insertion force of the wheel side drive shaft 3 in the insertion direction of the side gear 22 is borne by the first limiting platform 31 abutting against the side wall of the differential housing 21, so that the clamping member 4 does not need to bear the axial force in the process of assembling the wheel side drive shaft, and the problem of failure of axial limiting of the wheel side drive shaft caused by the clamping member in the prior art to bear the insertion force in the process of assembling the wheel side drive shaft can be avoided.

[0032] The electric drive assembly in the present invention can adopt the existing structure, which will not be described in detail here. The difference between the present invention and the existing electric drive assembly is that the diameter of the mounting hole of the electric drive assembly housing 1 for mounting the wheel-side drive shaft 3 is enlarged. Since the wheel-side drive shaft 3 of the present invention is provided with a first limit platform 31, the diameter of the first limit platform 31 is larger than the diameter of the part of the wheel-side drive shaft 3 located inside the differential assembly 2, and since the differential housing 21 is installed in the electric drive assembly housing 1, and the first limit platform 31 is in contact with the differential housing 21, the first limit platform 31 is set through the electric drive assembly housing 1, and the diameter of the mounting hole of the electric drive assembly housing 1 for mounting the wheel-side drive shaft 3 is enlarged.

[0033] Furthermore, the differential assembly 2 further includes a planetary gear 24 , and the planetary gear 24 is meshed with the side gear 22 .

[0034] Specifically, the side gear 22 and the planetary gear 24 are both bevel gears, and the side gear 22 and the planetary gear 24 are both installed inside the differential housing 21, the planetary gear 24 is installed at both ends of the cross shaft 23, and the planetary gear 24 is meshed with the differential input gear, one end of the side gear 22 is meshed with the planetary gear 24, and the other end of the side gear 22 is connected to the side shaft for power transmission. Optionally, the side gear 22 and the wheel side drive shaft 3 can be connected by a spline. The gear assembly in the electric drive assembly is transmitted to the planetary gear 24 through the differential input gear (not shown in the drawings, using the existing technology, and no longer described in detail here), and then transmitted to the side gear 22 through the planetary gear 24, and then transmitted to the wheel side drive shaft 3 through the side gear 22 to achieve power output.

[0035] In some embodiments, Figure 2 , Figure 3 and Figure 4 As shown, the clamping member 4 is arranged on one end of the wheel side drive shaft 3 located in the electric drive assembly housing 1, and the outer end surface of the half-shaft gear 22 is provided with an open clamping groove 221 that is clamped with the clamping member 4.

[0036] Exemplarily, the clamping member 4 may be a retaining spring, and the cross-section of the retaining spring may be approximately circular or rectangular. An installation groove 33 is provided at one end of the wheel-side drive shaft 3 located in the electric drive assembly housing 1, and the clamping member 4 is installed in the installation groove 33. The installation groove 33 is an annular groove, and the opening of the installation groove 33 is arranged toward the half-shaft gear 22. An open clamping groove 221 that is engaged with the retaining member 4 is provided on the outer end surface of the half-shaft gear 22, that is, an open clamping groove 221 is provided on the outer end surface of the half-shaft gear 22 away from the differential housing 21. It can be understood that the open clamping groove 221 is a groove provided on the outer end surface of the half-shaft gear 22 away from the differential housing 21. Further, as Figure 5 As shown, a through hole is provided in the middle of the half-axle gear 22 for the wheel-side drive shaft 3 to pass through, and the slot 221 is a step structure formed on the side wall of the through hole, which is recessed inward along the axial direction of the through hole on the side wall of the half-axle gear 22 away from the differential housing 21. The specific structure of the slot 221 is: a step structure is formed on the side wall of the through hole, which is recessed inward along the axial direction of the through hole on the side wall of the half-axle gear 22 away from the differential housing 21. In other words, the slot 221 has two opening directions, the first opening direction is toward the direction in which the wheel-side drive shaft 3 is inserted into the electric drive assembly housing 1, and the second opening direction is toward the axis of the wheel-side drive shaft 3 (such as Figure 5In this way, when the wheel side drive shaft 3 is installed, since the first limit platform 31 abuts against the outer wall of the differential housing 21 to bear the axial force of insertion, setting the clamping slot 221 as an open type does not affect the axial limit of the wheel side drive shaft 3, but makes the space of the clamping slot 221 larger, which is convenient for the spring to pop out, that is, it is convenient for the wheel side drive shaft 3 to form a clamping fit with the half-shaft gear 22. In addition, setting the clamping slot 221 as an open type can also reduce the weight of the electric drive assembly.

[0037] In some embodiments, Figure 4 As shown, the step surface 221d of the step structure is an inclined surface.

[0038] Specifically, in the present invention, relative to the direction in which the opening of the slot 221 is inserted into the electric drive assembly housing 1 toward the wheel side drive shaft 3 (such as Figure 2 or Figure 4 For example, the step surface 221d of the step structure can be understood as the bottom of the slot 221. Then, the bottom of the slot 221 is inclined relative to the opening in the direction in which the wheel side drive shaft 3 is pulled out of the electric drive assembly housing 1 (such as Figure 2 or Figure 4 The step surface 221d of the step structure is inclined in the direction in which the wheel-side drive shaft 3 is pulled out of the electric drive assembly housing 1. The step surface 221d of the step structure is set as an inclined surface, which can facilitate the pull-out of the wheel-side drive shaft 3 when the wheel-side drive shaft 3 is disassembled. Since the step surface 221d of the step structure is inclined in the direction in which the wheel-side drive shaft 3 is pulled out of the electric drive assembly housing 1, during the pull-out process, the retaining spring at the end of the wheel-side drive shaft 3 will rebound into the mounting groove 33 at the end of the wheel-side drive shaft 3 under the force of the inclined surface, thereby allowing the wheel-side drive shaft 3 to be pulled out smoothly.

[0039] Based on the above embodiments, Figure 5 and Figure 6 As shown, the included angle between the step surface 221d of the step structure and the side wall of the wheel side drive shaft 3 is less than 90°.

[0040] Specifically, the wheel side drive shaft 3 is set through the center of the side gear 22, and the slot 221 is opened at the center of the side gear 22. The wheel side drive shaft 3 is set through the slot 221, and the step surface 221d of the step structure is an inclined surface. Therefore, the angle between the step surface 221d of the step structure and the side wall of the wheel side drive shaft 3 (such as Figure 6The angle at the θ position in the step structure is an acute angle, and the angle between the step surface 221d of the step structure and the side wall of the wheel side drive shaft 3 is less than 90°. Exemplarily, the optimal angle between the step surface 221d of the step structure and the side wall of the wheel side drive shaft 3 can be 70°. It can be understood that the step surface 221d of the step structure is inclined in the direction in which the wheel side drive shaft 3 is pulled out of the electric drive assembly housing 1, so that it is easy to pull out the wheel side drive shaft 3.

[0041] In some embodiments, Figure 5 and Figure 6 As shown, the step side wall 221c of the step structure is parallel to the axis of the wheel side drive shaft 3.

[0042] Specifically, when the step side wall 221c of the step structure is parallel to the axis of the wheel side drive shaft 3, the open slot is a cylindrical structure, which is easy to process.

[0043] In some embodiments, Figure 4 As shown, the distance between the mounting groove 33 of the wheel side drive shaft 3 and the first limit platform 31 is equal to the distance between the bottom of the slot 221 and the outer wall of the differential housing 21 away from the side gear 22 .

[0044] Specifically, the distance between the side wall of the installation groove 33 of the wheel side drive shaft 3 near the bottom of the slot 221 and the side wall of the first limiting platform 31 abutting against the differential housing 21 is equal to the distance between the bottom of the slot 221 and the outer wall of the differential housing 21. In this way, when the wheel side drive shaft 3 is installed, the axial force generated when the wheel side drive shaft 3 is inserted into the electric drive assembly housing 1 is borne by the abutment between the first limiting platform 31 and the outer wall of the differential housing 21. Through the abutment and cooperation between the first limiting platform 31 of the wheel side drive shaft 3 and the differential housing 21, the axial position of the wheel side drive shaft 3 in the insertion direction into the electric drive assembly housing 1 can be effectively limited. In addition, when the first limit platform 31 abuts against the differential housing 21, the side wall of the mounting groove 33 adjacent to the bottom of the slot 221 is flush with the bottom of the slot 221, so that it is convenient for the retaining spring to pop into the slot 221. Through the cooperation of the first limit platform 31 and the retaining spring, the axial limit of the wheel-side drive shaft 3 in the direction of pulling out the wheel-side half-shaft gear 22 can be effectively performed.

[0045] Furthermore, if Figure 4 , Figure 5 and Figure 6 As shown, the distance between the side wall of the wheel-side driving shaft 3 and the side wall of the clamping groove 221 is smaller than the width of the clamping member 4 .

[0046] Specifically, the distance between the side wall of the wheel side drive shaft 3 and the side wall of the slot 221 (such as Figure 6 h2) is smaller than the width of the retaining ring (such as Figure 6h1 height), so that when the retaining spring is ejected into the retaining groove 221, the retaining spring can be located between the installation groove 33 and the retaining groove 221, and it is not easy for the retaining spring to be separated from the wheel side drive shaft 3. During the operation of the vehicle, the axial force generated by the wheel side drive shaft to pull out the electric drive assembly housing 1 is borne by the retaining spring and the retaining groove. The retaining spring and the retaining groove 221 can effectively limit the axial direction of the pull-out direction generated by the wheel side drive shaft pulling out the electric drive assembly housing 1.

[0047] In some embodiments, Figure 2 , Figure 3 and Figure 4 As shown, an oil seal 5 is provided between the wheel side drive shaft 3 and the electric drive assembly housing 1 .

[0048] Specifically, an oil seal 5 is arranged between the wheel-side drive shaft 3 and the electric drive assembly housing 1, which can seal the electric drive assembly to prevent dust from entering the electric drive assembly housing 1 and causing dust accumulation in the internal components of the electric drive assembly, thereby affecting the service life of the electric drive assembly.

[0049] Furthermore, a dust cover 51 is provided on a side of the oil seal 5 away from the differential assembly 2 to seal and prevent dust from the oil seal 5 .

[0050] Furthermore, if Figure 2 , Figure 3 and Figure 4 As shown, the oil seal 5 and the dust cover 51 are both sleeved on the periphery of the first limit platform 31 of the wheel side driving shaft 3;

[0051] Specifically, the differential assembly 2 is installed inside the electric drive assembly housing 1, and the first limit platform 31 needs to abut against the side wall of the differential assembly 2 housing, so the first limit platform 31 needs to pass through the electric drive assembly housing 1. Therefore, the height of the first limit platform 31 is set to match the thickness of the electric drive assembly housing 1 (the exemplary height of the first limit platform 31 can be greater than or equal to the thickness of the electric drive assembly housing 1), and the oil seal 5 and the dust cover 51 are both mounted on the periphery of the first limit platform 31, so that the oil seal 5 and the dust cover 51 are arranged between the first limit platform 31 and the electric drive assembly housing 1, so that the electric drive assembly housing 1 has better sealing performance, which protects the parts inside the electric drive assembly housing 1.

[0052] In some embodiments, Figure 2 , Figure 3 and Figure 4As shown, the wheel side drive shaft 3 is further provided with a second limit platform 32, the second limit platform 32 is arranged away from the side gear 22, and the second limit platform 32 is used to abut against the oil seal 5. Since the dust cover 51 is used to protect the oil seal 5, the dust cover 51 is arranged on a side away from the differential assembly 2 and abuts against the second limit platform 32.

[0053] Specifically, the second limiting platform 32 is disposed adjacent to the first limiting platform 31, the second limiting platform 32 and the first limiting platform 31 are integrally formed, and the diameter of the second limiting platform 32 is greater than the diameter of the first limiting platform 31. When the oil seal 5 and the dust cover 51 are both sleeved on the periphery of the first limiting platform 31, the side wall of the dust cover 51 abuts against the side wall of the second limiting platform 32, which can protect the oil seal 5 and ensure that the oil seal 5 is stably installed.

[0054] The specific installation and disassembly process of the utility model is as follows:

[0055] When installing the wheel side drive shaft 3, firstly, the oil seal 5 is sleeved on the first limit platform 31, or the oil seal 5 is placed in the mounting hole of the electric drive assembly housing 1 for mounting the wheel side drive shaft 3. Then, the oil seal 5 is inserted along the insertion direction of the wheel side drive shaft 3 (such as Figure 4 The wheel side drive shaft 3 is inserted into the electric drive assembly (in the direction of the arrow a in the figure), and the wheel side drive shaft 3 passes through the electric drive assembly housing 1, the differential housing 21 and the half-shaft gear 22 in sequence. When the first limit platform 31 abuts against the differential housing 21, the clamping piece 4 (also known as the retaining spring) at the end of the wheel side drive shaft 3 pops into the clamping groove 221 of the half-shaft gear 22, and abuts against the differential housing 21 through the first limit platform 31 to withstand the axial force of insertion, and is clamped and matched with the half-shaft gear 22 through the clamping piece 4, so that the wheel side drive shaft 3 is installed more stably.

[0056] When the wheel side drive shaft 3 is disassembled, pull the wheel side drive shaft 3 along the direction of pulling out the wheel side drive shaft 3 (such as Figure 4 The wheel side drive shaft 3 is pulled out of the electric drive assembly in the direction of the arrow b. At this time, under the action of the pulling force on the wheel side drive shaft 3, the retaining spring is squeezed by the inclined surface of the retaining groove 221 and rebounds into the installation groove 33, so that the wheel side drive shaft 3 can be pulled out smoothly.

[0057] The second aspect of the present invention provides a vehicle, including the electric drive assembly structure provided by the first aspect of the present invention. The vehicle has the technical effects described in any of the above embodiments, which will not be elaborated here.

[0058] It should be noted that some embodiments of the utility model are described above. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the above embodiments and still achieve the desired results. In addition, the processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0059] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0060] Although the present invention has been described in conjunction with specific embodiments of the present invention, many replacements, modifications and variations of these embodiments will be apparent to those skilled in the art based on the foregoing description. For example, other memory architectures may use the discussed embodiments.

[0061] The embodiments of the present invention are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present invention should be included in the scope of protection of the present invention.

Claims

1. An electric drive assembly structure, characterized in that: include: An electric drive assembly housing (1), wherein a differential assembly (2) is arranged inside the electric drive assembly housing (1), and the differential assembly (2) comprises a differential housing (21) and a half-axle gear (22); The wheel side drive shaft (3) is sequentially arranged to penetrate the electric drive assembly housing (1), the differential housing (21) and the half-axle gear (22); the wheel side drive shaft (3) is provided with a first limit platform (31); when the first limit platform (31) abuts against a side wall of the differential housing (21) away from the half-axle gear (22), the wheel side drive shaft (3) is engaged with the half-axle gear (22) through a clamping piece (4).

2. The electric drive assembly structure according to claim 1, characterized in that: The clamping member (4) is arranged at one end of the wheel side drive shaft (3) located inside the electric drive assembly housing (1), and the half shaft gear (22) is provided with an open clamping groove (221) that is clamped with the clamping member (4).

3. The electric drive assembly structure according to claim 2, characterized in that: A through hole is provided in the middle of the half-axle gear (22) for the wheel side drive shaft (3) to pass through, and the clamping groove (221) is a step structure formed on the side wall of the through hole, which is recessed inwardly along the axial direction of the through hole by the side wall of the half-axle gear (22) away from the differential housing (21).

4. The electric drive assembly structure according to claim 3, characterized in that: The step surface (221d) of the step structure is an inclined surface.

5. The electric drive assembly structure according to claim 3, characterized in that: The included angle between the step surface (221d) of the step structure and the axis of the wheel-side drive shaft (3) is less than 90°.

6. The electric drive assembly structure according to claim 3, characterized in that: The step side wall (221c) of the step structure is parallel to the axis of the wheel side drive shaft (3).

7. The electric drive assembly structure according to claim 1, characterized in that: An oil seal (5) is provided between the wheel side drive shaft (3) and the electric drive assembly housing (1).

8. The electric drive assembly structure according to claim 7, characterized in that: The oil seal (5) is sleeved on the periphery of the first limiting platform (31) of the wheel side driving shaft (3).

9. The electric drive assembly structure according to claim 8, characterized in that: The wheel side driving shaft (3) is also provided with a second limiting platform (32), the second limiting platform (32) is arranged away from the half shaft gear (22), and the second limiting platform (32) is used to abut against the oil seal (5).

10. A vehicle, characterized in that: An electric drive assembly structure comprising any one of claims 1-9.

Images