Differential mechanism structure

Abstract

The utility model discloses a differential mechanism structure which comprises a shell, a planetary gear tooth structure is installed in the shell, the planetary gear tooth structure comprises a planetary gear shaft and a sun gear, the two ends of the planetary gear shaft are fixedly connected with flat position parts, flat position clamping grooves matched with the flat position parts are formed in the shell, and the flat position clamping grooves are matched with the flat position parts. The sun gear is fixedly connected to the planetary gear shaft, a wear-resisting gasket is installed on the portion, between the sun gear and the shell, of the planetary gear shaft, a flat position gasket matched with the flat position clamping groove is installed between the wear-resisting gasket and the shell, and a bevel gear matched with a planetary gear tooth structure is installed in the shell. Compared with the prior art, the differential mechanism structure can limit autorotation of the planet wheel shaft and reduce sliding friction between the planet wheel shaft and the matching position of the planet wheel shaft, so that unnecessary abrasion between the planet wheel shaft and the matching position is reduced, and the stability of the internal structure of the differential mechanism is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of differentials, in particular to a differential structure. Background Art

[0002] When the differential is operating, the planetary axles often rotate, which is not ideal in practice. This rotation affects the sliding friction between the planetary axles and the mating parts, causing unnecessary wear on both sides. Over time, this wear will gradually affect the stability of the differential's internal structure and may eventually cause damage.

[0003] Furthermore, the sun gear in the differential is not completely fixed, which can cause it to move relative to the planetary axles during operation. This relative displacement causes friction between the sun gear and the differential housing, further increasing wear between components. This friction not only damages core components but also affects the performance of the entire differential, significantly reducing the differential's overall service life.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. Utility Model Content

[0005] The purpose of the present utility model is to provide a differential structure, which can solve the technical problems raised in the above background technology.

[0006] In order to achieve the above-mentioned purpose, the technical solution provided by a specific embodiment of the present invention is as follows:

[0007] A differential structure includes a housing, in which a planetary gear structure is installed. The planetary gear structure includes a planetary gear shaft and a sun gear. Both ends of the planetary gear shaft are fixedly connected with a flat portion. A flat slot matching the flat portion is provided in the housing. The sun gear is fixedly connected to the planetary gear shaft. A wear-resistant gasket is installed on the planetary gear shaft between the sun gear and the housing. A flat washer matching the flat slot is installed between the wear-resistant gasket and the housing. A bevel gear matching the planetary gear gear structure is installed in the housing.

[0008] In one or more embodiments of the present invention, the shell includes a first shell and a second shell, the first shell is provided with a first mounting hole, and the second shell is provided with a second mounting hole matching the first mounting hole.

[0009] In one or more embodiments of the present invention, a fourth installation groove is formed on the second shell, and a sealing ring matching the fourth installation groove is installed on the second shell.

[0010] In one or more embodiments of the present invention, the flat card slot includes a first mounting slot and a fifth mounting slot, the first mounting slot is opened on the first shell, and the fifth mounting slot is opened on the second shell.

[0011] In one or more embodiments of the present invention, a third mounting groove matching the bevel gear is formed on the first housing, and a seventh mounting groove matching the bevel gear is formed on the second housing.

[0012] In one or more embodiments of the present invention, angular contact bearings are installed between the bevel gear and the third mounting groove, and between the bevel gear and the seventh mounting groove.

[0013] In one or more embodiments of the present invention, a spline groove is provided on the bevel gear.

[0014] In one or more embodiments of the present invention, a second mounting groove is provided on the first shell, a sixth mounting groove is provided on the second shell, and the second mounting groove and the sixth mounting groove are both fixedly connected to bearings.

[0015] In one or more embodiments of the present invention, the bearing is a needle roller bearing.

[0016] In one or more embodiments of the present invention, a spline groove is provided on the bevel gear.

[0017] Compared with the existing technology, the differential structure of the present invention can limit the rotation of the planetary gear shaft, reduce the sliding friction between the planetary gear shaft and the mating part, thereby reducing unnecessary wear on both sides, which is beneficial to improving the stability of the internal structure of the differential. At the same time, by setting a wear-resistant gasket, it can reduce the friction between the sun gear and the housing, reduce the wear between the differential parts, and help extend the service life of the differential. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a schematic structural diagram of a differential structure in one embodiment of the present utility model;

[0020] Figure 2 This is a schematic diagram of an exploded structure of a differential structure in one embodiment of the present utility model;

[0021] Figure 3 This is a cross-sectional view of a differential structure in one embodiment of the present utility model;

[0022] Figure 4 This is a cross-sectional view of the first shell and the second shell in one embodiment of the present utility model;

[0023] Figure 5 This is a schematic structural diagram of a planetary gear shaft in one embodiment of the present utility model;

[0024] Figure 6 This is a structural diagram of the sun gear in one embodiment of the present utility model;

[0025] Figure 7 This is a schematic structural diagram of a wear-resistant gasket in one embodiment of the present utility model;

[0026] Figure 8 This is a structural diagram of a flat washer in one embodiment of the present utility model;

[0027] Figure 9 This is a schematic structural diagram of the second bevel gear in one embodiment of the present utility model.

[0028] Description of main reference numerals:

[0029] 1. First housing; 101. First mounting hole; 102. First mounting slot; 103. Second mounting slot; 104. Third mounting slot; 2. Second housing; 201. Second mounting hole; 202. Fourth mounting slot; 203. Fifth mounting slot; 204. Sixth mounting slot; 205. Seventh mounting slot; 3. Planetary gear structure; 4. Planetary gear shaft; 401. Flat portion; 5. Sun gear; 6. Wear-resistant gasket; 7. Flat washer; 8. Bevel gear; 801. Spline groove; 9. Angular contact bearing; 10. Bearing. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the following will be combined with the drawings of the embodiments of the present invention to clearly and completely describe the technical solutions of the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0031] like Figures 1 to 9As shown, a differential structure in one embodiment of the present invention includes a housing, a planetary gear structure 3 is installed in the housing, and a bevel gear 8 matching the planetary gear structure 3 is installed in the housing, and channels matching the bevel gear 8 are installed at both ends of the housing, and the channels are used for the wheel axle of the vehicle to pass through, and the wheel axle of the vehicle is meshed with the bevel gear 8.

[0032] like Figures 1 to 3 As shown, the planetary gear structure 3 includes a planetary shaft 4, with flattened portions 401 fixedly connected at both ends. Two sun gears 5 are fixedly connected to the planetary shaft 4. The two sun gears 5 are symmetrically arranged on the planetary shaft 4, and the bevel gear 8 and the sun gear 5 are meshed. A flattened slot that matches the flattened portion 401 is provided on the housing. The flattened portion 401 is located within the flattened slot. During the rotation of the sun gear 5, the flattened portion 401 cooperates with the flattened slot, largely preventing wear on the planetary shaft 4 and the housing, thereby improving the structural stability of the differential. That is, there are two sun gears 5 and one planetary shaft 4. The flattened end of the planetary shaft 4 is designed, and a wear-resistant gasket 6 is placed on it to prevent rotation, largely preventing the planetary shaft 4 from rotating.

[0033] like Figures 1 to 3 As shown, the planetary shaft 4 is sleeved with a wear-resistant washer 6, located between the sun gear 5 and the flattening slot. A flattening washer 7 is also sleeved between the wear-resistant washer 6 and the flattening slot. The flattening portion 401, the wear-resistant washer 6, and the flattening washer 7 effectively prevent rotation of the planetary shaft 4, minimizing the risk of self-rotation. This reduces wear caused by the self-rotation of the planetary shaft 4 and frictional damage caused by relative displacement of the sun gear 5.

[0034] like Figures 1 to 4 As shown, the housing includes a first housing 1 and a second housing 2. The first housing 1 is provided with a plurality of first mounting holes 101, and the second housing 2 is provided with second mounting holes 201 that match the first mounting holes 101. Screws can be threaded into the first mounting holes 101 and the second mounting holes 201 to secure the first housing 1 and the second housing 2. At the same time, securing the first housing 1 and the second housing 2 by the screws ensures that the first housing 1 and the second housing 2 are coaxial. The second housing 2 is also provided with a fourth mounting groove 202. A sealing ring that matches the fourth mounting groove 202 is installed on the second housing 2. The sealing ring is located between the first housing 1 and the second housing 2 and is used to seal the connection between the first housing 1 and the second housing 2, thereby minimizing the possibility that the gap between the first housing 1 and the second housing 2 is too large, which could result in dust, water, and other impurities entering the housing from between the first housing 1 and the second housing 2.

[0035] The flat card slot includes a first mounting slot 102 and a fifth mounting slot 203, which are respectively provided on the first shell 1 and the second shell 2. That is, the first mounting slot 102 and the fifth mounting slot 203 form a flat card slot.

[0036] like Figures 1 to 4 As shown, the first housing 1 is provided with a third mounting slot 104, and the second housing 2 is provided with a seventh mounting slot 205. Bevel gear 8 is mounted in each of the third and seventh mounting slots 104 and 205, respectively, and is rotatably connected thereto. Angular contact bearings 9 are mounted between bevel gear 8 and the sidewalls of the third and seventh mounting slots 104 and 205, respectively. Angular contact bearings 9 are fixedly connected at the axis of the first and second housings 1 and 2. Specifically, the axle passes through the channels, meshes with the angular contact bearings 9, and engages with the bevel gear 8.

[0037] like Figure 9 As shown, the bevel gear 8 is provided with a spline groove 801 that matches the wheel axle.

[0038] like Figures 1 to 4 As shown, the first housing 1 further defines a second mounting slot 103, and the second housing 2 defines a sixth mounting slot 204. The second and sixth mounting slots 103 and 204 are located at the outermost ends of the channel, respectively. Bearings 10 are mounted within the second and sixth mounting slots 103 and 204, and are concentrically arranged with the angular contact bearing 9. Bearing 10 is a needle roller bearing. Even when subjected to high pressure, the needle rollers within the needle roller bearing can rotate smoothly, thereby resolving the problem of ball bearings experiencing rotational stalling due to restricted ball rolling when subjected to high forces.

[0039] During use, the axle rotates with the bevel gear 8, which drives the planetary gear structure 3. Because the planetary gear structure 3 and the housing are fixed together by the flattened slot and the flattened portion 401, the planetary gear structure 3 and the housing rotate simultaneously, thereby reducing wear between the planetary gear structure 3 and the housing caused by the rotation of the planetary gear structure 3 within the housing. This helps to extend the service life of the differential.

[0040] This utility model largely solves the problem of fatigue wear caused by the rotation of the planetary gear shaft 4. Specifically, the rotation of the planetary gear shaft 4 is attenuated, the friction coefficient is sharply reduced, the stability of the internal structure of the differential is significantly improved, the failure rate is significantly reduced, and early failures caused by wear are reduced. At the same time, it can make the entire differential run more smoothly, reduce maintenance and replacement costs, and extend the service life of the differential.

[0041] This new design reduces friction between the sun gear 5 and the inner wall of the housing, creating a more stable connection between the planetary shaft 4 and the sun gear 5, and reducing friction between the sun gear 5 and the housing. This further reduces wear and tear on the differential's internal structure, improving system reliability and overall lifespan. It also reduces power loss caused by the relative motion of the sun gear 5, resulting in higher differential efficiency and smoother power transmission.

[0042] This new design largely avoids the problem of ball bearings rotating continuously after being pressed into their holes. By using needle bearings, the bearings can operate normally, reducing vibration and noise, improving the efficiency of the differential under high load conditions, and reducing malfunctions and heat generation. This significantly improves the overall stability of the differential, resulting in quieter operation, longer service life, and reduced cost pressure.

[0043] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0044] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A differential structure, characterized in that: The invention comprises a housing, wherein a planetary gear structure is installed in the housing, and the planetary gear structure comprises: A planetary gear shaft, wherein both ends of the planetary gear shaft are fixedly connected with a flat portion, and a flat slot matching the flat portion is provided in the housing; A sun gear fixedly connected to the planetary gear shaft; The planetary gear shaft is located between the sun gear and the housing and is provided with a wear-resistant gasket, and a flat-position washer matching the flat-position slot is provided between the wear-resistant gasket and the housing; A bevel gear matching the planetary gear structure is installed in the housing.

2. A differential structure according to claim 1, characterized in that: The housing includes a first housing and a second housing. The first housing is provided with a first mounting hole, and the second housing is provided with a second mounting hole matching the first mounting hole.

3. A differential structure according to claim 2, characterized in that: A fourth mounting groove is formed on the second shell, and a sealing ring matching the fourth mounting groove is installed on the second shell.

4. A differential structure according to claim 2 or 3, characterized in that: The flat card slot includes a first mounting slot and a fifth mounting slot. The first mounting slot is opened on the first shell, and the fifth mounting slot is opened on the second shell.

5. A differential structure according to claim 4, characterized in that: The first housing is provided with a third mounting groove matching the bevel gear, and the second housing is provided with a seventh mounting groove matching the bevel gear.

6. A differential structure according to claim 5, characterized in that: Angular contact bearings are installed between the bevel gear and the third mounting groove, and between the bevel gear and the seventh mounting groove.

7. A differential structure according to claim 6, characterized in that: The bevel gear is provided with a spline groove.

8. The differential structure according to claim 2, characterized in that: A second mounting groove is provided on the first shell, and a sixth mounting groove is provided on the second shell. The second mounting groove and the sixth mounting groove are both fixedly connected to bearings.

9. The differential structure according to claim 8, characterized in that: The bearing is a needle roller bearing.

10. The differential structure according to claim 1, characterized in that: The bevel gear is provided with a spline groove.

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