Differential system and vehicle

Abstract

The utility model discloses a differential system and a vehicle, the differential system comprises a differential shell, a planetary gear train, a planet carrier and a spline gear train, and the differential shell is provided with a mounting cavity; a planetary gear of the planetary gear train is arranged in the mounting cavity; a planet shaft of the planet carrier is arranged in the mounting cavity and connected to the differential shell, and the planet shaft is sleeved with the planet gear; a spline gear of the spline gear train is arranged in the mounting cavity, and the spline gear is in transmission engagement with the planetary gear; a first wear-resistant part and a first damping part are sequentially arranged between the planetary gear and the mounting cavity, and the first wear-resistant part and the first damping part are coaxially arranged with the planetary shaft; and / or, a second wear-resistant part and a second damping part are sequentially arranged between the spline gear and the mounting cavity, and the second wear-resistant part and the second damping part are coaxially arranged with the spline gear. The differential system has the functions of abrasion resistance and noise reduction, vibration noise and the like are effectively reduced, and therefore the comfort, reliability and the like of a user are improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a differential system and a vehicle. Background Art

[0002] The differential system is the main component of the vehicle drive axle. The function of the differential system is to transmit power to the half-axles on both sides, while allowing the half-axles on both sides to rotate at different speeds, so that the wheels on both sides can travel at different distances in a rolling form, which can shorten the friction between the tires and the ground.

[0003] The differential system includes planetary gears, planet carriers, spline gears, etc. However, the differential system generates noise during high-speed operation, which reduces user comfort and reliability. Utility Model Content

[0004] The present application provides a differential system and a vehicle to solve technical problems such as noise generated during high-speed operation of the differential system, which reduces user comfort and reliability.

[0005] To solve the above technical problems, the present application proposes a differential system, comprising: a differential housing, provided with a mounting cavity; a planetary gear system, comprising at least one planetary gear, which is disposed in the mounting cavity; a planetary carrier, comprising at least one planetary shaft, which is disposed in the mounting cavity and is at least partially connected to the differential housing, and the planetary gear sleeve is disposed on the planetary shaft; a spline gear system, comprising at least one spline gear, which is disposed in the mounting cavity, and the spline gear is meshed with the planetary gear; wherein a first wear-resistant part and a first damping part are sequentially disposed between the planetary gear and the mounting cavity, and the first wear-resistant part and the first damping part are respectively coaxially disposed with the planetary shaft; and / or a second wear-resistant part and a second damping part are sequentially disposed between the spline gear and the mounting cavity, and the second wear-resistant part and the second damping part are respectively coaxially disposed with the spline gear.

[0006] The first damping member and / or the second damping member is at least one of a polyetheretherketone member, a polyphenylene sulfone resin member, a polyethersulfone member, and a polyaryletherketone member.

[0007] The first wear-resistant part and / or the second wear-resistant part is at least one of a wear-resistant metal part and a wear-resistant non-metal part.

[0008] Among them, the planetary gear system includes two planetary gears, the planetary carrier includes two planetary shafts, the two planetary gear sleeves are arranged on the corresponding planetary shafts, and the first wear-resistant part and the first damping part are arranged in sequence between the planetary gears and the installation cavity; the planetary gear system includes two spline gears, and the second wear-resistant part and the second damping part are arranged in sequence between the spline gears and the installation cavity.

[0009] The first wear-resistant part and the first damping part are respectively in a plane shape and / or a spherical shape; the second wear-resistant part and the second damping part are respectively in a plane shape and / or a spherical shape.

[0010] It also includes a first limit assembly, which is arranged between the first wear-resistant part, the first damping part and the planetary shaft, and is used to limit the first wear-resistant part and the first damping part to be relatively still in the installation cavity.

[0011] Among them, the first wear-resistant part and the first damping part are both spherical, the first limiting assembly includes a first limiting plane and a second limiting plane, at least one first limiting plane is set on the central inner wall of the first wear-resistant part and the first damping part, and at least one second limiting plane is set on the outer peripheral surface of the planetary shaft, and the first limiting plane and the second limiting plane cooperate with each other.

[0012] It also includes a second limiting component, which is arranged between the outer periphery of the second wear-resistant part, the outer periphery of the second damping part and the installation cavity, and is used to limit the second wear-resistant part and the second damping part to be relatively stationary in the installation cavity.

[0013] Among them, the second wear-resistant part and the second damping part are both planar, the second limiting assembly includes a first blocking part and a second blocking part, at least one first blocking part is respectively arranged on the outer periphery of the second wear-resistant part and the second damping part, at least one second blocking part is arranged in the installation cavity, and the second blocking part limits the first blocking part.

[0014] In order to solve the above technical problems, the present application proposes a vehicle, comprising the above-mentioned differential system.

[0015] The beneficial effect of the present application is as follows: Different from the prior art, the present application provides a differential system. The differential system includes a differential housing, a planetary gear system, a planetary carrier and a spline gear system. The differential housing is provided with a mounting cavity. The planetary gear system includes at least one planetary gear. The planetary gear is arranged in the mounting cavity. The planetary carrier includes at least one planetary shaft. The planetary shaft is arranged in the mounting cavity and is at least partially connected to the differential housing. The planetary gear sleeve is arranged on the planetary shaft. The spline gear system includes at least one spline gear. The spline gear is arranged in the mounting cavity. The spline gear is meshed with the planetary gear. Among them, a first wear-resistant part and a first damping part are arranged in sequence between the planetary gear and the mounting cavity. The first wear-resistant part and the first damping part are respectively arranged coaxially with the planetary shaft. And / or, a second wear-resistant part and a second damping part are arranged in sequence between the spline gear and the mounting cavity. The second wear-resistant part and the second damping part are respectively arranged coaxially with the spline gear.

[0016] Therefore, the differential system cooperates with the first wear-resistant part and the first damping part, and / or the second wear-resistant part and the second damping part, not only to achieve wear-resistant characteristics, reduce friction between the planetary gear and / or the spline gear and the mounting cavity, and extend the service life of the planetary gear and / or the spline gear and the mounting cavity; but also to achieve noise reduction characteristics, absorb friction vibration, and then effectively reduce vibration noise, etc., thereby improving user comfort and reliability, etc. In addition, the differential system can also reduce noise, etc., in the process of reducing friction through the first wear-resistant part and / or the second wear-resistant part. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0018] Figure 1 It is a structural schematic diagram of an embodiment of the differential system of the present application;

[0019] Figure 2 is a cross-sectional schematic diagram of an embodiment of the differential system of the present application;

[0020] Figure 3 yes Figure 2 A schematic diagram of the structure shown;

[0021] Figure 4 yes Figure 2 The structural schematic diagram of B shown;

[0022] Figure 5 It is a partial exploded schematic diagram of an embodiment of the differential system of the present application;

[0023] Figure 6 is a first partial cross-sectional schematic diagram of an embodiment of a differential system of the present application;

[0024] Figure 7 It is a structural schematic diagram of an embodiment of a differential housing in the differential system of the present application;

[0025] Figure 8 yes Figure 7 The schematic diagram of the structure of C shown;

[0026] Fig. 9 It is a second partial cross-sectional schematic diagram of an embodiment of the differential system of the present application.

[0027] Figure numbers: 10, differential system; 11, differential housing; 111, mounting cavity; 12, planetary gear train; 121, planetary gear; 13, planetary carrier; 131, planetary shaft; 14, spline gear train; 141, spline gear; 151, first wear-resistant part; 152, first damping part; 153, second wear-resistant part; 154, second damping part; 155, flat hole; 16, first limit assembly; 161, first limit plane; 162, second limit plane; 17, second limit assembly; 171, first blocking portion; 172, second blocking portion. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0029] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0030] The differential system and vehicle provided by the utility model are described in detail below in conjunction with the embodiments.

[0031] See also Figure 1 and Figure 2 , Figure 1 It is a structural schematic diagram of an embodiment of the differential system of the present application; Figure 2 1 is a cross-sectional schematic diagram of an embodiment of a differential system of the present application. The present application provides a differential system 10. The differential system 10 includes a differential housing 11, a planetary gear system 12, a planetary carrier 13 and a spline gear system 14. The differential housing 11 is provided with a mounting cavity 111. The planetary gear system 12, the planetary carrier 13 and the spline gear system 14 are all arranged in the mounting cavity 111.

[0032] The planetary gear train 12 includes at least one planetary gear 121. The planetary gear 121 is disposed in the mounting cavity 111. The number of the planetary gears 121 can be, but is not limited to, one, two, three, or four. The planet carrier 13 includes at least one planetary shaft 131. The planetary shaft 131 is disposed in the mounting cavity 111. The planetary shaft 131 is at least partially connected to the differential housing 11 to define the planetary shaft 131. The number of the planetary shaft 131 can be, but is not limited to, one, two, three, or four. The planetary gear 121 is sleeved on the planetary shaft 131, and the planetary gear 121 can rotate around the planetary shaft 131.

[0033] The spline gear train 14 includes at least one spline gear 141. The spline gear 141 is disposed in the mounting cavity 111. The number of the spline gears 141 may be, but is not limited to, one, two, three, or four. The spline gear 141 is in driving engagement with the planetary gear 121.

[0034] See also Figure 3 and Figure 4 , Figure 3 yes Figure 2 A schematic diagram of the structure shown; Figure 4 yes Figure 2 The structural diagram of B is shown. Figure 1 to Figure 2 , wherein the first wear-resistant part 151 and the first damping part 152 are sequentially arranged between the planetary gear 121 and the mounting cavity 111. That is, the planetary gear 121, the first wear-resistant part 151, the first damping part 152 and the inner wall of the mounting cavity 111 are sequentially arranged. The first wear-resistant part 151 has wear-resistant characteristics. The first wear-resistant part 151 can withstand the rotational friction between the planetary gear 121 and the mounting cavity 111, thereby reducing the friction, thereby extending the service life of the planetary gear 121 and the differential housing 11, etc. The first damping part 152 has damping characteristics. The first damping part 152 can absorb the friction vibration generated between the planetary gear 121, the first wear-resistant part 151 and the mounting cavity 111, thereby effectively reducing the vibration noise during the operation of the differential system 10. The first wear-resistant part 151 and the first damping part 152 are respectively coaxially arranged with the planetary shaft 131. That is, the first wear-resistant member 151 and the first damping member 152 may be sleeved on the outer circumference of the planetary shaft 131 ; or, the first wear-resistant member 151 and the first damping member 152 may not be sleeved on the outer circumference of the planetary shaft 131 .

[0035] And / or, a second wear-resistant member 153 and a second damping member 154 are sequentially arranged between the spline gear 141 and the mounting cavity 111. That is, they are sequentially arranged between the spline gear 141, the second wear-resistant member 153, the second damping member 154 and the inner wall of the mounting cavity 111. The second wear-resistant member 153 has wear-resistant properties. The second wear-resistant member 153 can withstand the rotational friction between the spline gear 141 and the mounting cavity 111, thereby reducing the friction, thereby extending the service life of the spline gear 141 and the differential housing 11, etc. The second damping member 154 has damping properties. The second damping member 154 can absorb the friction vibration generated between the spline gear 141, the second wear-resistant member 153 and the mounting cavity 111, thereby effectively reducing the vibration noise during the operation of the differential system 10. The second wear-resistant member 153 and the second damping member 154 are respectively coaxially arranged with the spline gear 141. That is, the second wear-resistant member 153 and the second damping member 154 may be sleeved on the outer circumference of the planetary shaft 131 ; or, neither the second wear-resistant member 153 nor the second damping member 154 may be sleeved on the outer circumference of the planetary shaft 131 .

[0036] The differential system 10 may include a first wear-resistant member 151 and a first damping member 152. Alternatively, the differential system 10 may include a second wear-resistant member 153 and a second damping member 154. Alternatively, the differential system 10 may include the first wear-resistant member 151, the first damping member 152, the second wear-resistant member 153 and the second damping member 154 at the same time.

[0037] Therefore, the differential system 10 cooperates with the first wear-resistant part 151 and the first damping part 152, and / or the second wear-resistant part 153 and the second damping part 154, not only realizing the wear-resistant characteristics, reducing the friction between the planetary gear 121 and / or the spline gear 141 and the mounting cavity 111, and extending the service life of the planetary gear 121 and / or the spline gear 141 and the mounting cavity 111; but also realizing the noise reduction characteristics, being able to absorb friction vibration, and then effectively reducing vibration noise, etc., thereby improving user comfort and reliability, etc. In addition, the differential system 10 can also reduce noise, etc., in the process of reducing friction through the first wear-resistant part 151 and / or the second wear-resistant part 153.

[0038] See also Figure 5 , Figure 5 1 is a partial exploded schematic diagram of an embodiment of the differential system of the present application. Figures 1 to 4In some embodiments, the first damping member 152 and / or the second damping member 154 is at least one of a polyetheretherketone member (not shown in the figure), a polyphenylene sulfone resin member (not shown in the figure), a polyethersulfone member (not shown in the figure), and a polyaryletherketone member (not shown in the figure). In a specific embodiment, the first damping member 152 can be at least one of a polyetheretherketone member, a polyphenylene sulfone resin member, a polyethersulfone member, and a polyaryletherketone member. The first damping member 152 can be one, two, three, or four of the above-mentioned polyetheretherketone member, polyphenylene sulfone resin member, polyethersulfone member, and polyaryletherketone member, and the combination thereof can be determined according to actual needs and is not limited here. For example, in the present embodiment, the first damping member 152 is a polyetheretherketone member.

[0039] In another specific embodiment, the second damping member 154 may be at least one of a polyetheretherketone member, a polyphenylene sulfone resin member, a polyethersulfone member, and a polyaryletherketone member. For example, the second damping member 154 may be one, two, three, or four of the above-mentioned polyetheretherketone member, polyphenylene sulfone resin member, polyethersulfone member, and polyaryletherketone member, and the combination thereof may be determined according to actual needs and is not limited here. For example, in this embodiment, the second damping member 154 is a polyetheretherketone member.

[0040] The above-mentioned polyetheretherketone parts, polyphenylenesulfone resin parts, polyethersulfone parts and polyaryletherketone parts have damping properties, can absorb friction vibration, and thus play a role in noise reduction. Among them, the polyetheretherketone parts can be made of polyetheretherketone (PEEK, polyether ether ketone) material. The polyetheretherketone parts have the characteristics of high damping, thereby effectively reducing the vibration noise of parts during operation. Polyphenylenesulfone resin parts can be made of polyphenylenesulfone resin (PPSU, Poly phenylenesulfone resins). Polyethersulfone parts can be made of polyethersulfone (PES, Poly ether sulfone). Polyaryletherketone parts can be made of polyaryletherketone (PEK, poly aryl ether ether ketone) material. It should be noted that polyetheretherketone material, polyphenylenesulfone resin material, polyethersulfone material and polyaryletherketone material are conventionally known to those skilled in the art, and their materials are not limited. In addition, the first damping member 152 and / or the second damping member 154 may also be made of other materials, which are not limited herein.

[0041] In some embodiments, the first wear-resistant part 151 and / or the second wear-resistant part 153 are at least one of a wear-resistant metal part (not shown in the figure) and a wear-resistant non-metal part (not shown in the figure). In a specific embodiment, the first wear-resistant part 151 can be at least one of a wear-resistant metal part and a wear-resistant non-metal part. For example, the first wear-resistant part 151 can be a wear-resistant metal part, or a wear-resistant non-metal part, or a wear-resistant metal part and a wear-resistant non-metal part, etc., which are not limited here. In this embodiment, the first wear-resistant part 151 is a wear-resistant metal part.

[0042] In another specific embodiment, the second wear-resistant part 153 can be at least one of a wear-resistant metal part and a wear-resistant non-metal part. For example, the second wear-resistant part 153 can be a wear-resistant metal part, a wear-resistant non-metal part, or a wear-resistant metal part and a wear-resistant non-metal part, etc., which are not limited here. In this embodiment, the second wear-resistant part 153 is a wear-resistant metal part.

[0043] The above-mentioned wear-resistant metal parts and wear-resistant non-metal parts have wear-resistant properties, can reduce friction, and improve the service life of parts. Among them, the wear-resistant metal parts can be wear-resistant metal materials. The wear-resistant metal material can be but not limited to cold-rolled steel plate material, manganese steel material, etc. The wear-resistant non-metal parts can be wear-resistant non-metal materials. The wear-resistant non-metal materials can be but not limited to ceramic materials, etc.

[0044] In some embodiments, the planetary gear train 12 includes two planetary gears 121. The planet carrier 13 includes two planetary shafts 131. The two planetary gears 121 are sleeved on the corresponding planetary shafts 131. The differential system 10 includes two sets of first wear-resistant parts 151 and first damping parts 152. A first wear-resistant part 151 and a first damping part 152 are sequentially arranged between a planetary gear 121 and the mounting cavity 111. Another first wear-resistant part 151 and another first damping part 152 are sequentially arranged between another planetary gear 121 and the mounting cavity 111. The planetary gear train 12 includes two spline gears 141. The differential system 10 includes two sets of second wear-resistant parts 153 and a second damping part 154. A second wear-resistant part 153 and a second damping part 154 are sequentially arranged between a spline gear 141 and the mounting cavity 111. Another second wear-resistant member 153 and another second damping member 154 are sequentially arranged between the other spline gear 141 and the mounting cavity 111 .

[0045] The above-mentioned differential system 10 is simultaneously provided with two groups of first wear-resistant parts 151 and first damping parts 152, two groups of second wear-resistant parts 153 and second damping parts 154, so that each planetary gear 121 and the mounting cavity 111 have both wear-resistant and noise-reducing functions, and each spline gear 141 and the mounting cavity 111 have both wear-resistant and noise-reducing functions, thereby reducing noise, thereby improving user comfort and reliability, etc.

[0046] In other embodiments, the planetary gear train 12 includes four planetary gears 121. The planet carrier 13 includes four planetary shafts 131. The planetary gear train 12 includes four spline gears 141, etc. The differential system 10 includes four groups of first wear-resistant parts 151 and first damping parts 152, two groups of second wear-resistant parts 153 and second damping parts 154, and a first wear-resistant part 151 and a first damping part 152 are sequentially arranged between each planetary gear 121 and the mounting cavity 111; a second wear-resistant part 153 and a second damping part 154 are sequentially arranged between each spline gear 141 and the mounting cavity 111.

[0047] In some embodiments, the first wear-resistant member 151 and the first damping member 152 are respectively planar and / or spherical. The shape of the first wear-resistant member 151 and the shape of the first damping member 152 may be the same or different. When the shape of the first wear-resistant member 151 and the shape of the first damping member 152 are the same, such as the shapes of the first wear-resistant member 151 and the first damping member 152 are both planar or spherical, the first wear-resistant member 151 and the first damping member 152 fit smoothly. When the shape of the first wear-resistant member 151 and the first damping member 152 are different, such as the shape of the first wear-resistant member 151 is planar and the shape of the first damping member 152 is spherical; or, the shape of the first wear-resistant member 151 is spherical and the shape of the first damping member 152 is planar.

[0048] The second wear-resistant member 153 and the second damping member 154 are respectively in a planar shape and / or a spherical shape. The shape of the second wear-resistant member 153 and the shape of the second damping member 154 can be the same or different. When the shape of the second wear-resistant member 153 and the shape of the second damping member 154 are the same, such as the shapes of the second wear-resistant member 153 and the second damping member 154 are both planar or spherical, the second wear-resistant member 153 and the second damping member 154 fit smoothly. When the shape of the second wear-resistant member 153 and the second damping member 154 are different, such as the shape of the second wear-resistant member 153 is planar and the shape of the second damping member 154 is spherical; or, the shape of the second wear-resistant member 153 is spherical and the shape of the second damping member 154 is planar.

[0049] In addition, at least one of the shapes of the first wear-resistant part 151, the first damping part 152, the second wear-resistant part 153 and the second damping part 154 is planar or spherical, and the shapes of the first wear-resistant part 151, the first damping part 152, the second wear-resistant part 153 and the second damping part 154 can be determined according to actual needs and are not limited here.

[0050] By the above-mentioned first wear-resistant member 151 and first damping member 152 being respectively planar and / or spherical, and the second wear-resistant member 153 and second damping member 154 being respectively planar and / or spherical, etc., the assembly stability of the first wear-resistant member 151 and the first damping member 152 between the planetary gear 121 and the mounting cavity 111 is improved, and the assembly stability of the second wear-resistant member 153 and the second damping member 154 between the spline gear 141 and the mounting cavity 111 is improved. In this embodiment, the first wear-resistant member 151 and the first damping member 152 are both spherical. The second wear-resistant member 153 and the second damping member 154 are both planar.

[0051] See also Figure 6 , Figure 6 1 is a schematic diagram of a first partial cross-section of an embodiment of a differential system of the present application. Figures 1 to 5 In some embodiments, the differential system 10 further includes a first limit assembly 16. The first limit assembly 16 is disposed between the outer periphery of the first wear-resistant part 151, the outer periphery of the first damping part 152 and the mounting cavity 111. The first limit assembly 16 is used to limit the first wear-resistant part 151 and the first damping part 152 to be relatively stationary in the mounting cavity 111. The first wear-resistant part 151 and the first damping part 152 are limited by the first limit assembly 16. When the differential system 10 runs at high speed, the first wear-resistant part 151 and the first damping part 152 remain stationary, thereby reducing wear on both sides of the first damping part 152 due to relative rotation.

[0052] The above-mentioned first limiting assembly 16 can be a clamping limit, a plug-in limit, a bolt limit, etc., which are not limited here. In a specific embodiment, the first wear-resistant part 151 and the first damping part 152 are both spherical. The first limiting assembly 16 includes a first limiting plane 161 and a second limiting plane 162. At least one first limiting plane 161 is respectively provided on the central inner side wall of the first wear-resistant part 151 and the first damping part 152. At least one second limiting plane 162 is provided on the outer peripheral surface of the planetary shaft 131. The first limiting plane 161 and the second limiting plane 162 cooperate to limit the first wear-resistant part 151 and the first damping part 152 to be relatively stationary in the installation cavity 111. Through the mutual cooperation of the above-mentioned first limiting plane 161 and the second limiting plane 162, the wear on both sides of the first damping part 152 due to relative rotation is reduced.

[0053] The number of the first limiting planes 161 can be, but not limited to, one, two, three, etc. The number of the second limiting planes 162 can be, but not limited to, one, two, three, etc. The number of the first limiting planes 161 and the number of the second limiting planes 162 are the same. As in the present embodiment, the first wear-resistant part 151 and the first damping part 152 are respectively provided with two first limiting planes 161 on the inner side wall assembled with the planetary shaft 131, such as the first wear-resistant part 151 and the first damping part 152 are respectively flat holes 155. Two second limiting planes 162 are provided on the outer peripheral surface of the planetary shaft 131. The first limiting plane 161 cooperates with the corresponding second limiting plane 162. Among them, the two first limiting planes 161 are arranged opposite to each other, and the two second limiting planes 162 are arranged opposite to each other. The first wear-resistant part 151 and the first damping part 152 cooperate with the flat shaft of the planetary gear 121 (not shown in the figure) through the flat hole 155 for limiting.

[0054] See also Figures 7 and 8 , Figure 7 It is a structural schematic diagram of an embodiment of a differential housing in the differential system of the present application; Figure 8 yes Figure 7 The schematic diagram of the structure of C shown; Fig. 9 2 is a schematic diagram of a second partial cross-section of an embodiment of a differential system of the present application. Figures 1 to 6 In some embodiments, the differential system 10 further includes a second limiter assembly 17. The second limiter assembly 17 is disposed between the outer periphery of the second wear-resistant member 153, the outer periphery of the second damping member 154 and the mounting cavity 111. The second limiter assembly 17 is used to limit the second wear-resistant member 153 and the second damping member 154 to be relatively stationary in the mounting cavity 111. The second wear-resistant member 153 and the second damping member 154 are limited by the second limiter assembly 17. When the differential system 10 runs at a high speed, the second wear-resistant member 153 and the second damping member 154 remain stationary, thereby reducing wear on both sides of the second damping member 154 due to relative rotation.

[0055] The above-mentioned second limiting assembly 17 can be limited by clamping, plugging and bolting, etc., which is not limited here. In a specific embodiment, the second wear-resistant part 153 and the second damping part 154 are both planar. The second limiting assembly 17 includes a first blocking portion 171 and a second blocking portion 172. At least one first blocking portion 171 is respectively provided on the outer periphery of the second wear-resistant part 153 and the second damping part 154. At least one second blocking portion 172 is provided in the installation cavity 111. The second blocking portion 172 limits the first blocking portion 171, and is used to limit the second wear-resistant part 153 and the second damping part 154 to be relatively stationary in the installation cavity 111. Through the cooperation of the above-mentioned first blocking portion 171 and the second blocking portion 172, the wear on both sides of the second damping part 154 due to relative rotation is reduced.

[0056] The number of the first blocking parts 171 may be, but is not limited to, one, two, three, or more than four. The number of the second blocking parts 172 may be, but is not limited to, one, two, three, or more than four. The number of the first blocking parts 171 may be the same as or different from the number of the second blocking parts 172. As in the present embodiment, four first blocking parts 171 are provided on the periphery of the second wear-resistant part 153, four first blocking parts 171 are provided on the periphery of the second damping part 154, and two second blocking parts 172 are provided in the mounting cavity 111. The two second blocking parts 172 form two limiting areas (not shown in the figure). The two first blocking parts 171 are located in one limiting area; the other two first blocking parts 171 are located in another limiting area.

[0057] See also Figures 1 to 9 , the present application provides a vehicle. The vehicle (not shown in the figure) includes the differential system 10 described above. The vehicle is equipped with the differential system 10. The differential system 10 cooperates with the first wear-resistant part 151 and the first damping part 152, and / or the second wear-resistant part 153 and the second damping part 154, which not only realizes the wear-resistant characteristics, reduces the friction between the planetary gear 121 and / or the spline gear 141 and the mounting cavity 111, and extends the service life of the planetary gear 121 and / or the spline gear 141 and the mounting cavity 111; but also realizes the noise reduction characteristics, can absorb friction vibration, and then effectively reduce vibration noise, etc., so as to improve user comfort and reliability, etc. It should be noted that the differential system 10 in this embodiment is the differential system 10 described in the above embodiment, which will not be repeated here.

[0058] The terms "first", "second", "third" in this application are only used for descriptive purposes and cannot be understood as indicating the quantity of the indicated technical features. Thus, the features defined as "first", "second", "third" can expressly or implicitly include at least one of these features. In the embodiments of the present application, all directional indications (such as up, down, left, right, front, back ...) are only used to explain the relative positional relationship, motion conditions, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "include" and "have" and any of their variations are intended to cover non-exclusive inclusions. The process, method, system, product or equipment such as including a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or equipment.

[0059] The above descriptions are merely embodiments of the present application and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A differential system, characterized in that: include: A differential housing is provided with a mounting cavity; A planetary gear train, comprising at least one planetary gear, wherein the planetary gear is disposed in the mounting cavity; A planet carrier, comprising at least one planet shaft, the planet shaft being arranged in the mounting cavity and at least partially connected to the differential housing, the planet gear sleeve being arranged on the planet shaft; A spline gear train, comprising at least one spline gear, wherein the spline gear is disposed in the mounting cavity and is meshed with the planetary gear; Wherein, a first wear-resistant member and a first damping member are sequentially arranged between the planetary gear and the mounting cavity, and the first wear-resistant member and the first damping member are respectively arranged coaxially with the planetary shaft; And / or, a second wear-resistant member and a second damping member are sequentially arranged between the spline gear and the installation cavity, and the second wear-resistant member and the second damping member are respectively coaxially arranged with the spline gear.

2. The differential system according to claim 1, characterized in that: The first damping member and / or the second damping member is at least one of a polyetheretherketone member, a polyphenylene sulfone resin member, a polyethersulfone member, and a polyaryletherketone member.

3. The differential system according to claim 1, characterized in that: The first wear-resistant part and / or the second wear-resistant part is at least one of a wear-resistant metal part and a wear-resistant non-metal part.

4. The differential system according to any one of claims 1 to 3, characterized in that: The planetary gear system includes two planetary gears, the planet carrier includes two planetary shafts, the two planetary gears are sleeved on the corresponding planetary shafts, and the first wear-resistant part and the first damping part are sequentially arranged between the planetary gears and the mounting cavity; The planetary gear system includes two spline gears, and the second wear-resistant member and the second damping member are sequentially arranged between the spline gears and the mounting cavity.

5. The differential system according to claim 4, characterized in that: The first wear-resistant member and the first damping member are respectively in a plane shape and / or a spherical shape; The second wear-resistant part and the second damping part are respectively in a plane shape and / or a spherical shape.

6. The differential system according to claim 5, characterized in that: It also includes a first limiting component, which is arranged between the first wear-resistant part, the first damping part and the planetary shaft, and is used to limit the first wear-resistant part and the first damping part to be relatively still in the installation cavity.

7. The differential system according to claim 6, characterized in that: The first wear-resistant part and the first damping part are both spherical in shape, the first limiting assembly includes a first limiting plane and a second limiting plane, at least one of the first limiting planes is arranged on the central inner side walls of the first wear-resistant part and the first damping part, at least one of the second limiting planes is arranged on the outer peripheral surface of the planetary shaft, and the first limiting plane and the second limiting plane cooperate with each other.

8. The differential system according to claim 5, characterized in that: It also includes a second limiting assembly, which is arranged between the outer periphery of the second wear-resistant part, the outer periphery of the second damping part and the installation cavity, and is used to limit the second wear-resistant part and the second damping part to be relatively stationary in the installation cavity.

9. The differential system according to claim 8, characterized in that: The second wear-resistant part and the second damping part are both planar, the second limiting assembly includes a first blocking part and a second blocking part, at least one of the first blocking parts is respectively arranged on the periphery of the second wear-resistant part and the second damping part, at least one of the second blocking parts is arranged in the installation cavity, and the second blocking part limits the first blocking part.

10. A vehicle, characterized in that: A differential system comprising any one of claims 1 to 9.

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