Novel differential mechanism assembly of electric vehicle

Abstract

The utility model provides a novel differential mechanism assembly of an electric vehicle, and belongs to the technical field of differential mechanisms. The novel electric vehicle differential assembly comprises a supporting structure and a differential structure. The supporting structure comprises a differential shell, an annular sleeve and a gear, the annular sleeve is arranged on the differential shell, and the gear is installed on the annular sleeve; the differential structure comprises a first transmission part, a differential gear set and a second transmission part, the differential gear set is installed in the differential shell and is in transmission with the first transmission part, and the second transmission part is in transmission connection to the differential gear set and penetrates through the interior of the shaft sleeve in a sliding mode. Due to the adoption of the split design, the assembly is more convenient, the gears can be directly in meshing transmission after being assembled, gap adjustment is not needed, the use is relatively convenient, and meanwhile, the torsion can be increased, the durability is improved and the noise is reduced by adopting the double planetary gear sets.

Description

TECHNICAL FIELD

[0001] The utility model relates to differential mechanism technical field, specifically, relate to a novel electric vehicle differential mechanism assembly. BACKGROUND

[0002] Differential mechanism is the key part in automobile transmission system, is mainly used to solve the problem of left and right drive wheel rotation speed difference when vehicle turns, ensures steady steering and power distribution.

[0003] At present, differential mechanism is the common transmission component on the automobile electric vehicle, in view of the existing differential mechanism is installed and is likely to produce gap to need to adjust additionally, it is relatively troublesome to use, and adopts single planetary gear set, so that the torque is relatively small when using, and the durability is poor and the noise is big, therefore it is necessary to propose a kind of novel electric vehicle differential mechanism assembly to solve the above problems. UTILITY MODEL CONTENTS

[0004] In order to make up for the above insufficient, the utility model provides a kind of novel electric vehicle differential mechanism assembly, to improve the existing differential mechanism is installed and is likely to produce gap to need to adjust additionally, it is relatively troublesome to use, and adopts single planetary gear set, so that the torque is relatively small when using, and the durability is poor and the noise is big.

[0005] The utility model is realized as follows:

[0006] The utility model provides a kind of novel electric vehicle differential mechanism assembly, including support structure and differential structure.

[0007] The support structure includes differential mechanism housing, annular sleeve and gear, the annular sleeve is placed on the differential mechanism housing, the inside of the gear is fixed with the shaft sleeve, the gear is installed on the annular sleeve;The differential structure includes first transmission part, differential gear set and second transmission part, the first transmission part is placed in the inside of the differential mechanism housing, the differential gear set is installed in the inside of the differential mechanism housing and is driven with the first transmission part, the second transmission part is drivingly connected on the differential gear set, the second transmission part is slidingly penetrated in the inside of the shaft sleeve.

[0008] In an embodiment of the utility model, the inside of the differential mechanism housing is circumferentially provided with screw hole, the inside of the annular sleeve is provided with the first through hole matched with the screw hole, the second through hole matched with the first through hole is formed in the gear.

[0009] In an embodiment of the utility model, the annular boss is formed on the differential mechanism housing, the annular groove matched with the annular boss is formed on the annular sleeve, and the annular groove is clamped on the annular boss.

[0010] In an embodiment of the utility model, the first notch is symmetrically arranged on the differential housing, and the second notch is arranged on the annular sleeve and matched with the first notch.

[0011] In an embodiment of the utility model, the first transmission part comprises a first half axle gear shaft sleeve and a first half axle gear, the first half axle gear shaft sleeve is fixedly penetrated on the first half axle gear, the first half axle gear shaft sleeve is slidably penetrated in the bottom of the differential housing, and the first half axle gear is slidably connected with the inside of the differential housing.

[0012] In an embodiment of the utility model, the differential gear set comprises a first planetary shaft and a second planetary shaft, the first planetary shaft is rotatably connected with a first planetary gear at both ends, the second planetary shaft is rotatably connected with a second planetary gear at both ends, and the first planetary gear and the second planetary gear are engaged with the first half axle gear.

[0013] In an embodiment of the utility model, the first clamping groove is arranged on the first planetary shaft, the second clamping groove is arranged on the second planetary shaft and matched with the first clamping groove, the first clamping groove is clamped on the second clamping groove, and the first planetary shaft and the second planetary shaft are clamped between the first notch and the second notch.

[0014] In an embodiment of the utility model, the second transmission part comprises a second half axle gear shaft sleeve and a second half axle gear, the second half axle gear shaft sleeve is fixedly penetrated on the second half axle gear, the second half axle gear is engaged with the first planetary gear and the second planetary gear, and the second half axle gear shaft sleeve is slidably penetrated in the sleeve.

[0015] The utility model discloses a novel electric vehicle differential assembly, which has the following advantages. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the following drawings only show some of the embodiments of the present application, and should not be considered as limiting the scope. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0017] Figure 1 is a schematic diagram of the novel electric vehicle differential assembly structure provided by the embodiments of the present application;

[0018] Figure 2 is a schematic diagram of the first perspective partial cross-sectional structure of the novel electric vehicle differential assembly provided by the embodiments of the present application;

[0019] Figure 3 is a schematic diagram of the exploded structure of the novel electric vehicle differential assembly provided by the embodiments of the present application;

[0020] Figure 4 is a schematic diagram of the annular sleeve structure of the novel electric vehicle differential assembly provided by the embodiments of the present application.

[0021] In the figure: 100 - support structure; 110 - differential housing; 111 - threaded hole; 112 - annular protrusion; 113 - first notch; 120 - annular sleeve; 121 - second notch; 122 - first through hole; 123 - annular groove; 130 - gear; 131 - shaft sleeve; 132 - second through hole; 200 - differential structure; 210 - first transmission part; 211 - first half shaft gear shaft sleeve; 212 - first half shaft gear; 220 - differential gear set; 221 - first planetary shaft; 2211 - first clamping groove; 222 - second planetary shaft; 2221 - second clamping groove; 223 - first planetary gear; 224 - second planetary gear; 230 - second transmission part; 231 - second half shaft gear shaft sleeve; 232 - second half shaft gear. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application. EMBODIMENT

[0023] Please refer to Figures 1-4The utility model provides a technical scheme: a novel electric vehicle differential assembly, including support structure 100 and differential structure 200.

[0024] Please refer to Figures 1-4 Support structure 100 includes differential housing 110, annular sleeve 120 and gear 130, annular sleeve 120 is placed on differential housing 110, the inside fixed with shaft sleeve 131 of gear 130, and gear 130 is installed on annular sleeve 120.

[0025] The inside of differential housing 110 is circumferentially provided with threaded hole 111, the inside of annular sleeve 120 is provided with first through hole 122 matched with threaded hole 111, gear 130 is provided with second through hole 132 matched with first through hole 122, here can be fixed by bolt through second through hole 132 and first through hole 122 and be connected to the inside of threaded hole 111, from differential housing 110, annular sleeve 120 and gear 130 are fixed.Differential housing 110 is formed with annular lug 112, and annular sleeve 120 is provided with annular groove 123 matched with annular lug 112, and annular groove 123 is clamped on annular lug 112, here annular groove 123 and annular lug 112 are set up, and can limit annular sleeve 120 when placing, to make the placement more stable.

[0026] Differential housing 110 is symmetrically provided with first notch 113, and annular sleeve 120 is provided with second notch 121 matched with first notch 113, here first notch 113 and second notch 121 can form a circular hole matched with first planetary shaft 221 and second planetary shaft 222, for limiting first planetary shaft 221 and second planetary shaft 222.

[0027] Please refer to Figures 1-4 Differential structure 200 includes first transmission part 210, differential gear set 220 and second transmission part 230, first transmission part 210 is placed in the inside of differential housing 110, differential gear set 220 is installed in the inside of differential housing 110 and is driven with first transmission part 210, second transmission part 230 is drivingly connected on differential gear set 220, and second transmission part 230 is slidingly penetrated in the inside of shaft sleeve 131.

[0028] The first transmission part 210 comprises a first half axle gear shaft sleeve 211 and a first half axle gear 212, the first half axle gear shaft sleeve 211 is fixedly penetrated on the first half axle gear 212, the first half axle gear shaft sleeve 211 is slidably penetrated in the bottom of the differential housing 110, and the first half axle gear 212 is slidably connected with the inside of the differential housing 110. The second transmission part 230 comprises a second half axle gear shaft sleeve 231 and a second half axle gear 232, the second half axle gear shaft sleeve 231 is fixedly penetrated on the second half axle gear 232, the second half axle gear 232 is engaged with the first planetary gear 223 and the second planetary gear 224, and the second half axle gear shaft sleeve 231 is slidably penetrated in the shaft sleeve 131.

[0029] The differential gear set 220 comprises a first planetary shaft 221 and a second planetary shaft 222, both ends of the first planetary shaft 221 are rotatably connected with the first planetary gear 223, both ends of the second planetary shaft 222 are rotatably connected with the second planetary gear 224, and the first planetary gear 223 and the second planetary gear 224 are engaged with the first half axle gear 212; a first clamping groove 2211 is formed on the first planetary shaft 221, a second clamping groove 2221 matched with the first clamping groove 2211 is formed on the second planetary shaft 222, the first clamping groove 2211 is clamped on the second clamping groove 2221, and the first planetary shaft 221 and the second planetary shaft 222 are clamped between the first notch 113 and the second notch 121. Here, the first planetary shaft 221 and the second planetary shaft 222 are clamped with each other, and two groups of planetary gears are used to increase the torque, reduce the noise, and improve the durability, which is two to four times of the ordinary differential assembly.

[0030] Specifically, the working principle of the new electric vehicle differential assembly is as follows: during assembly, the first transmission part 210 is placed in the inside of the differential housing 110, then the second planetary shaft 222 and the first planetary shaft 221 are placed in the corresponding first notch 113, and the first clamping groove 2211 and the second clamping groove 2221 are clamped with each other, so that the first planetary gear 223 and the second planetary gear 224 are engaged with the first half axle gear 212, then the second notch 121 on the annular sleeve 120 is clamped on the second planetary shaft 222 and the first planetary shaft 221, at this time, the second half axle gear 232 is engaged on the first planetary gear 223 and the second planetary gear 224, finally the shaft sleeve 131 is sleeved on the second half axle gear shaft sleeve 231, and the second through hole 132 is matched with the first through hole 122 and the threaded hole 111, finally the bolt is penetrated through the second through hole 132 and the first through hole 122 and is threadedly connected to the inside of the threaded hole 111 to fix the differential assembly, so that the split design is used to make the assembly more convenient, and the gears can be directly engaged and transmitted after assembly, without gap adjustment, which is convenient to use, and the use of double planetary gear sets can increase the torque, improve the durability, and reduce the noise.

[0031] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A novel electric vehicle differential assembly, comprising a support structure (100) and a differential structure (200) mounted on the support structure (100), characterized in that, the support structure (100) comprises a differential housing (110), an annular sleeve (120) and a gear (130), the annular sleeve (120) is arranged on the differential housing (110), the gear (130) is internally fixed with a shaft sleeve (131), and the gear (130) is mounted on the annular sleeve (120); the differential structure (200) comprises a first transmission part (210), a differential gear set (220) and a second transmission part (230), the first transmission part (210) is arranged in the interior of the differential housing (110), the differential gear set (220) is mounted in the interior of the differential housing (110) and is in transmission with the first transmission part (210), and the second transmission part (230) is transmissionally connected on the differential gear set (220) and slides through the interior of the shaft sleeve (131).

2. A new electric vehicle differential assembly as claimed in claim 1, wherein, The interior of the differential housing (110) is circumferentially provided with a threaded hole (111), the interior of the annular sleeve (120) is provided with a first through hole (122) matched with the threaded hole (111), and the gear (130) is provided with a second through hole (132) matched with the first through hole (122).

3. A new electric vehicle differential assembly as claimed in claim 1, wherein, The differential housing (110) is formed with an annular protrusion (112), the annular sleeve (120) is provided with an annular groove (123) matched with the annular protrusion (112), and the annular groove (123) is clamped on the annular protrusion (112).

4. A new electric vehicle differential assembly as claimed in claim 1, wherein, The differential housing (110) is symmetrically provided with a first notch (113), and the annular sleeve (120) is provided with a second notch (121) matched with the first notch (113).

5. A novel electric vehicle differential assembly as claimed in claim 4, wherein, The first transmission part (210) comprises a first half shaft gear sleeve (211) and a first half shaft gear (212), the first half shaft gear sleeve (211) is fixedly penetrated on the first half shaft gear (212), the first half shaft gear sleeve (211) slides through the bottom of the differential housing (110), and the first half shaft gear (212) is in sliding connection with the interior of the differential housing (110).

6. A novel electric vehicle differential assembly as claimed in claim 5, wherein, The differential gear set (220) comprises a first planetary shaft (221) and a second planetary shaft (222), both ends of the first planetary shaft (221) are rotationally connected with a first planetary gear (223), both ends of the second planetary shaft (222) are rotationally connected with a second planetary gear (224), and the first planetary gear (223) and the second planetary gear (224) are in mesh with the first half shaft gear (212).

7. A novel electric vehicle differential assembly as claimed in claim 6, wherein, The first planet shaft (221) is provided with a first clamping groove (2211), the second planet shaft (222) is provided with a second clamping groove (2221) matched with the first clamping groove (2211), the first clamping groove (2211) is clamped on the second clamping groove (2221), and the first planet shaft (221) and the second planet shaft (222) are clamped between the first notch (113) and the second notch (121).

8. A new electric vehicle differential assembly as claimed in claim 6, wherein, The second transmission part (230) comprises a second half shaft gear shaft sleeve (231) and a second half shaft gear (232), the second half shaft gear shaft sleeve (231) is fixedly penetrated on the second half shaft gear (232), the second half shaft gear (232) is engaged with the first planet gear (223) and the second planet gear (224), and the second half shaft gear shaft sleeve (231) is slidably penetrated through the shaft sleeve (131).

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