Planet wheel transmission device and vehicle

Abstract

The utility model relates to the technical field of planet wheel transmission, and discloses a planet wheel transmission device and a vehicle, the planet wheel transmission device comprises a shell assembly, an inner gear ring assembly and a first vibration isolation ring assembly, the shell assembly is internally provided with an inner spline part; an outer spline part is arranged on the outer ring surface of the inner gear ring assembly; the outer spline part and the inner spline part are connected in a matched mode and are in gap fit, a first containing cavity is formed between the outer ring face of the inner gear ring assembly and the shell assembly, the first containing cavity is annular, and the first containing cavity is located on the side, in the axial direction of the inner gear ring assembly, of the outer spline part; the first vibration isolation ring assembly is arranged in the first containing cavity, the outer ring face of the first vibration isolation ring assembly makes contact with the inner surface of the shell assembly, and the inner ring face of the first vibration isolation ring assembly makes contact with the outer ring face of the inner gear ring assembly. The radial length of the first containing cavity is larger than the gap amount between the outer spline part and the inner spline part. According to the planet wheel transmission device and the vehicle, the radial impact of the planet wheel transmission device can be relieved, and the NVH performance of the whole vehicle is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of planetary gear transmission, in particular to a planetary gear transmission device and a vehicle. Background Art

[0002] With the further tightening of global carbon emission policies and the intensification of the country's promotion of pure electric new energy vehicles, various automobile companies are seeking electric drive assemblies with better performance and layout for the development of new energy models. Among them, electric drives using planetary gear mechanisms have the characteristics of convenient layout and high power density. Due to the characteristics of its transmission structure, the power is diverted to several planetary gears, and then the planetary gears converge and output to the vehicle wheel end. Due to the inevitable existence of manufacturing errors, the transmission load distribution of several planetary gears and the inner ring gear components will be uneven.

[0003] In the related art, in order to solve the above-mentioned problems, an inner ring gear component is usually connected to the outer shell of the planetary gear mechanism through a floating mechanism. Specifically, an external spline is provided on the inner ring gear component, and an internal spline is provided on the outer shell. The two are connected by a spline pair. When floating is required, the spline pair is often a gap fit, so as to achieve axial torque transmission and radial floating, so as to achieve the effect of evenly loading the planetary gears. Due to changes in operating conditions, the floating structure will produce radial impact, vibration and noise, and affect the NVH performance of the entire vehicle. Even if a buffer plate is added between the inner spline and the outer spline, due to the thin thickness of the buffer plate, after a long period of use, the buffer plate will be damaged and fail under the action of the radial impact force, and will also produce radial impact, causing vibration and noise, affecting the NVH performance of the entire vehicle. Utility Model Content

[0004] In view of this, the utility model provides a planetary gear transmission device and a vehicle to alleviate the radial impact of the planetary gear transmission device and improve the NVH performance of the whole vehicle.

[0005] On the one hand, the utility model provides a planetary gear transmission device, including a housing assembly, an inner gear ring assembly and a first vibration isolation ring assembly, wherein an inner spline portion is arranged in the housing assembly; an outer spline portion is arranged on the outer ring surface of the inner gear ring assembly; the outer spline portion is matched and connected with the inner spline portion, and a gap is matched, and a first accommodating chamber is arranged between the outer ring surface of the inner gear ring assembly and the housing assembly, the first accommodating chamber is annular, and the first accommodating chamber is located on one side of the outer spline portion along the axial direction of the inner gear ring assembly; the first vibration isolation ring assembly is arranged in the first accommodating chamber, the outer ring surface of the first vibration isolation ring assembly contacts the inner surface of the housing assembly, and the inner ring surface of the first vibration isolation ring assembly contacts the outer ring surface of the inner gear ring assembly; wherein the length of the first accommodating chamber along its radial direction is greater than the gap between the outer spline portion and the inner spline portion.

[0006] In an optional embodiment, the first vibration isolation ring assembly is arranged in the first accommodating cavity in a compressed state along its radial direction.

[0007] In an optional embodiment, it also includes a limiting ring, which is connected to the inner wall surface of the shell assembly, and an annular limiting portion is arranged on the inner wall surface of the shell assembly, and the annular limiting portion and the limiting ring respectively limit the two side surfaces of the inner gear ring assembly along its axial direction, and the side surface on the limiting ring or the annular limiting portion used to limit the inner gear ring assembly is at least a part of a side surface of the first accommodating cavity; and / or, the first vibration isolation ring assembly is arranged in a compressed state along its axial direction in the first accommodating cavity.

[0008] In an optional embodiment, it also includes a second vibration isolation ring assembly, and a second accommodating chamber is provided between the outer ring surface of the inner gear ring assembly and the shell assembly, the second accommodating chamber is annular, the first accommodating chamber and the second accommodating chamber are respectively located on both sides of the outer spline portion along the axial direction of the inner gear ring assembly, the radial length of the second accommodating chamber is greater than the gap between the outer spline portion and the inner spline portion, the second vibration isolation ring assembly is arranged in the second accommodating chamber, the outer ring surface of the second vibration isolation ring assembly contacts the inner surface of the shell assembly, and the inner ring surface of the second vibration isolation ring assembly contacts the outer ring surface of the inner gear ring assembly.

[0009] In an optional embodiment, the side surface on the limiting ring used to limit the inner gear ring assembly is at least a portion of a side surface of the first accommodating cavity, and the side surface on the annular limiting portion used to limit the inner gear ring assembly is at least a portion of a side surface of the second accommodating cavity; and / or, the second vibration isolation ring assembly is arranged in a compressed state along its radial direction in the second accommodating cavity.

[0010] In an optional embodiment, the second vibration isolation ring assembly is arranged in the second accommodating cavity in a compressed state along its axial direction.

[0011] In an optional embodiment, the first accommodating chamber is coaxially arranged with the inner ring gear assembly; and / or the second accommodating chamber is coaxially arranged with the inner ring gear assembly.

[0012] In an optional embodiment, the outer diameter of the first accommodating chamber is larger than the major diameter of the inner spline portion, and the inner diameter of the first accommodating chamber is smaller than the minor diameter of the outer spline portion; and / or, the outer diameter of the second accommodating chamber is larger than the major diameter of the inner spline portion, and the inner diameter of the second accommodating chamber is smaller than the minor diameter of the outer spline portion; and / or, the size of the first vibration isolation ring assembly is the same as the size of the second vibration isolation ring assembly; and / or, the size of the first accommodating chamber is the same as the size of the second accommodating chamber.

[0013] In an optional embodiment, the first accommodating chamber is coaxially arranged with the inner gear ring assembly, the second accommodating chamber is coaxially arranged with the inner gear ring assembly, the size of the first vibration isolation ring assembly is the same as the size of the second vibration isolation ring assembly, and the size of the first accommodating chamber is the same as the size of the second accommodating chamber;

[0014] The size of the first accommodating cavity and the size of the first vibration isolation ring assembly satisfy the following formula:

[0015]

[0016] And / or, the first accommodating chamber is coaxially arranged with the inner gear ring assembly, the second accommodating chamber is coaxially arranged with the inner gear ring assembly, the size of the first vibration isolation ring assembly is the same as the size of the second vibration isolation ring assembly, and the size of the first accommodating chamber is the same as the size of the second accommodating chamber; the inner spline portion and the outer spline portion are both helical teeth, and the size of the first accommodating chamber and the size of the first vibration isolation ring assembly satisfy the following formula,

[0017]

[0018] Among them, F r is the radial component force generated by the unbalanced force acting on the inner gear ring assembly, A is the outer diameter of the first accommodating cavity, B is the inner diameter of the first accommodating cavity, C1 is the length of the first vibration isolation ring assembly along its radial direction, δ is the floating clearance between the inner spline part and the outer spline part, C is the outer diameter of the first vibration isolation ring assembly, C2 is the thickness of the first vibration isolation ring assembly along its axial direction, E is the elastic modulus of the first vibration isolation ring assembly, and F a is the axial component force generated by the unbalanced force acting on the inner gear ring assembly, and B1 is the width of the first accommodating cavity.

[0019] On the other hand, the present invention further provides a vehicle, comprising a planetary gear transmission device as in any one of the embodiments of the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the related technologies, the drawings required for use in the specific implementation methods or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 It is a schematic diagram of the matching structure between the inner gear ring component and the outer shell in the planetary gear mechanism in the related art;

[0022] Figure 2 It is a schematic diagram of the matching structure of the inner gear ring component, the outer shell and the buffer plate in the planetary gear mechanism in the related art;

[0023] Figure 3 This is a schematic structural diagram of a planetary gear transmission device according to an embodiment of the utility model;

[0024] Figure 4 This is a schematic structural diagram of a housing assembly in a planetary gear transmission device according to an embodiment of the utility model;

[0025] Figure 5 This is a schematic structural diagram of an inner gear ring assembly in a planetary gear transmission device according to an embodiment of the utility model;

[0026] Figure 6 It is a structural schematic diagram of a first vibration isolation ring assembly in a planetary gear transmission device according to an embodiment of the utility model.

[0027] Description of reference numerals:

[0028] 1. Inner gear ring component; 2. Outer shell; 3. Buffer plate;

[0029] 4. Shell assembly; 5. Internal gear ring assembly; 6. First accommodating chamber; 7. First vibration isolation ring assembly; 8. Limiting ring; 9. Second vibration isolation ring assembly; 10. Second accommodating chamber;

[0030] 401, inner spline portion; 402, annular limiting portion;

[0031] 501. External spline portion. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0033] In the related art, the electric drive of the automobile using a planetary gear mechanism has the characteristics of convenient layout and high power density. Due to the characteristics of its transmission structure, the power is divided into several planetary gears, and then the planetary gears converge and output to the vehicle wheel end. Due to the inevitable existence of manufacturing errors, the transmission load distribution of several planetary gears and the inner ring gear component 1 will be uneven.

[0034] The inner gear ring component 1 is usually connected to the housing 2 of the planetary gear mechanism through a floating mechanism, specifically, as follows: Figure 1As shown, an outer spline is provided on the inner gear ring component 1, and an inner spline is provided on the outer shell 2, and the two are connected by a spline pair. When floating is required, the spline pair is often a gap fit to achieve axial torque transmission and radial floating, so as to achieve the effect of evenly loading the planetary gears. Due to changes in operating conditions, the floating structure will produce radial impact, vibration and noise, affecting the NVH performance of the vehicle; Figure 2 As shown, even if a buffer plate 3 is added between the inner spline and the outer spline, due to its thin thickness, the buffer plate 3 will be damaged and fail under the action of radial impact force after a long period of use. It will also generate radial impact, causing vibration and noise, affecting the NVH performance of the entire vehicle.

[0035] In order to solve the above technical problems, the utility model provides a planetary gear transmission device and a vehicle to solve the problem of radial impact of the planetary gear transmission device affecting the NVH performance of the whole vehicle.

[0036] Combine the following Figures 3 to 6 , describing an embodiment of the utility model.

[0037] According to an embodiment of the present utility model, on the one hand, a planetary gear transmission device is provided, such as Figure 3 As shown, it includes a housing assembly 4, an inner gear ring assembly 5 and a first vibration isolation ring assembly 7, as shown Figure 4 As shown, an internal spline portion 401 is provided in the housing assembly 4; Figure 5 As shown, an outer spline portion 501 is provided on the outer ring surface of the inner gear ring assembly 5. Figure 3 As shown, the outer spline portion 501 is connected with the inner spline portion 401 with a gap, and a first accommodating chamber 6 is arranged between the outer ring surface of the inner ring gear assembly 5 and the shell assembly 4. The first accommodating chamber 6 is annular and is located on one side of the outer spline portion 501 along the axial direction of the inner ring gear assembly 5, that is, the first accommodating chamber 6 can be located on any side of the outer spline portion 501; the first vibration isolation ring assembly 7 is arranged in the first accommodating chamber 6, the outer ring surface of the first vibration isolation ring assembly 7 contacts the inner surface of the shell assembly 4, and the inner ring surface of the first vibration isolation ring assembly 7 contacts the outer ring surface of the inner ring gear assembly 5; wherein the length of the first accommodating chamber 6 along its radial direction is greater than the gap between the outer spline portion 501 and the inner spline portion 401.

[0038] It should be noted that the outer spline portion 501 is connected with the inner spline portion 401 with a gap, which means that a gap is provided at the position where the outer spline portion 501 is connected with the inner spline portion 401, and the gap is not zero, so that a floating amount can be generated; the inner spline portion 401 and the outer spline portion 501 are both matched straight tooth splines or helical tooth splines, which can be selected and adjusted according to actual needs; a gear ring for meshing with the planetary gear is provided on the inner ring surface of the inner ring gear assembly 5.

[0039] It is worth noting that the cross-sections of the inner and outer ring surfaces of the first vibration isolation ring assembly 7 can be line segments, or other shapes such as circular arc segments, preferably line segments; of course, the cross-sections of the inner and outer ring surfaces of the first accommodating cavity 6 can also be line segments, circular arc segments, or other shapes; preferably line segments; at the same time, the cross-sections of the side surfaces of the first vibration isolation ring assembly 7 can be line segments, circular arc segments, etc., preferably line segments; the cross-sections of the side surfaces of the first accommodating cavity 6 can also be line segments, circular arc segments, etc., preferably line segments.

[0040] In this embodiment, if Figures 3 to 5 As shown, a first accommodating chamber 6 is provided between the outer ring surface of the inner gear ring assembly 5 and the housing assembly 4. The first accommodating chamber 6 is annular and is located on one side of the outer spline portion 501 along the axial direction of the inner gear ring assembly 5; the first vibration isolation ring assembly 7 is arranged in the first accommodating chamber 6, so that when the inner gear ring assembly 5 is impacted, the first vibration isolation ring assembly 7 can buffer the impact force of the outer spline portion 501 on the inner spline portion 401, reduce the generation of vibration and noise, thereby improving the NVH performance of the whole vehicle, and When the load borne by the inner gear ring assembly 5 is large, the load can be borne simultaneously by the spline pair formed by the first vibration isolation ring assembly 7, the inner spline part 401 and the outer spline part 501, thereby avoiding damage to the first vibration isolation ring assembly 7 and improving the stability of the present solution; at the same time, the radial length of the first accommodating cavity 6 is greater than the gap between the outer spline part 501 and the inner spline part 401, and the matching clearance between the inner spline part 401 and the outer spline part 501 will not be reduced due to the impact of the inner gear ring assembly 5, which will easily lead to pressure damage and failure.

[0041] In one embodiment, Figure 3 As shown, the first vibration isolation ring assembly 7 is arranged in the first accommodating cavity 6 in a compressed state along its radial direction.

[0042] Specifically, the compression amount of the first vibration isolation ring assembly 7 along its radial direction can be selected and adjusted according to actual needs.

[0043] In this embodiment, the first vibration isolation ring assembly 7 is located in the first accommodating cavity 6 in a compressed state along its radial direction, and can form a pre-tensioning force between the outer spline portion 501 and the inner spline portion 401, so that the first vibration isolation ring assembly 7 is in a buffering standby state at any time, which can further reduce vibration and noise and improve the NVH performance of the entire vehicle.

[0044] In one embodiment, Figure 3As shown, the planetary gear transmission device also includes a limiting ring 8, which is connected to the inner wall surface of the housing assembly 4. An annular limiting portion 402 is arranged on the inner wall surface of the housing assembly 4. The annular limiting portion 402 and the limiting ring 8 respectively limit the two side surfaces of the inner ring gear assembly 5 along its axial direction. The side surface on the limiting ring 8 or the annular limiting portion 402 used to limit the inner ring gear assembly 5 is at least a part of a side surface of the first accommodating chamber 6; and / or, the first vibration isolation ring assembly 7 is arranged in a compressed state along its axial direction in the first accommodating chamber 6.

[0045] Specifically, Figure 4 As shown, the annular limiting portion 402 is a stepped platform; the limiting ring 8 can be screwed on the inner wall surface of the shell assembly 4 by bolts, or by providing an annular clamping groove on the inner wall surface of the shell assembly 4. The limiting ring 8 is an elastic ring and can be clamped in the annular clamping groove through its compression deformation.

[0046] It should be noted that the side surface on the limiting ring 8 or the annular limiting portion 402 for limiting the inner gear ring assembly 5 is at least a part of a side surface of the first accommodating cavity 6, that is, the side surface on the limiting ring 8 or the annular limiting portion 402 for limiting the inner gear ring assembly 5 can be a part of a side surface of the first accommodating cavity 6, or can be, for example Figure 3 As shown, the side surface on the limiting ring 8 or the annular limiting portion 402 used to limit the inner gear ring assembly 5 is a side surface of the first accommodating cavity 6 , as long as it can limit the first vibration isolation ring assembly 7 .

[0047] In this embodiment, if Figure 3 As shown, the side surface on the limiting ring 8 or the annular limiting portion 402 used to limit the inner gear ring assembly 5 is at least a part of a side surface of the first accommodating chamber 6, which can facilitate the installation and limitation of the inner gear ring assembly 5 and the first vibration isolation ring assembly 7. The structure is simple and easy to process and assemble; and the first vibration isolation ring assembly 7 is arranged in a compressed state along its axial direction in the first accommodating chamber 6, which can buffer the axial direction of the inner gear ring assembly 5.

[0048] In one embodiment, Figure 3 As shown, the planetary gear transmission device also includes a second vibration isolation ring assembly 9, and a second accommodating chamber 10 is further arranged between the outer ring surface of the inner ring gear assembly 5 and the housing assembly 4. The second accommodating chamber 10 is annular, and the first accommodating chamber 6 and the second accommodating chamber 10 are respectively located on both sides of the outer spline portion 501 along the axial direction of the inner ring gear assembly 5. The length of the second accommodating chamber 10 along its radial direction is greater than the gap between the outer spline portion 501 and the inner spline portion 401. The second vibration isolation ring assembly 9 is arranged in the second accommodating chamber 10, and the outer ring surface of the second vibration isolation ring assembly 9 contacts the inner surface of the housing assembly 4, and the inner ring surface of the second vibration isolation ring assembly 9 contacts the outer ring surface of the inner ring gear assembly 5.

[0049] It should be noted that the size and position of the second vibration isolation ring assembly 9 may be different from or the same as the size and position of the first vibration isolation ring assembly 7; similarly, the size and position of the second accommodating cavity 10 may be different from or the same as the size and position of the first accommodating cavity 6.

[0050] In this embodiment, the arrangement of the second vibration isolation ring assembly 9 and the second accommodating cavity 10 can perform impact resistance buffering at both ends of the inner gear ring assembly 5 at the same time, thereby improving the uniformity of the buffering effect.

[0051] In one embodiment, Figure 3 As shown, the side surface on the limiting ring 8 used to limit the inner ring gear assembly 5 is at least a part of a side surface of the first accommodating chamber 6, and the side surface on the annular limiting portion 402 used to limit the inner ring gear assembly 5 is at least a part of a side surface of the second accommodating chamber 10; and / or, the second vibration isolation ring assembly 9 is arranged in a compressed state along its radial direction in the second accommodating chamber 10.

[0052] Specifically, the compression amount of the second vibration isolation ring assembly 9 along its radial direction can be selected and adjusted according to actual needs.

[0053] In this embodiment, the second vibration isolation ring assembly 9 is located in the second accommodating cavity 10 in a compressed state along its radial direction, and can form a pre-tensioning force between the outer spline portion 501 and the inner spline portion 401, so that the second vibration isolation ring assembly 9 is in a buffering standby state at any time, which can further reduce vibration and noise and improve the NVH performance of the vehicle.

[0054] In one embodiment, Figure 3 As shown, the second vibration isolation ring assembly 9 is arranged in a compressed state along its axial direction in the second accommodating chamber 10; in this embodiment, the second vibration isolation ring assembly 9 is arranged in a compressed state along its axial direction in the second accommodating chamber 10, which can provide axial impact resistance and buffering for the inner gear ring assembly 5.

[0055] In one embodiment, Figure 3 As shown, the first accommodating chamber 6 is coaxially arranged with the inner gear ring assembly 5 ; and / or, the second accommodating chamber 10 is coaxially arranged with the inner gear ring assembly 5 .

[0056] It should be noted that the first accommodating chamber 6 is coaxially arranged with the inner ring gear assembly 5, which means that the central axis of the first accommodating chamber 6 coincides with the central axis of the inner ring gear assembly 5; the second accommodating chamber 10 is coaxially arranged with the inner ring gear assembly 5, which means that the central axis of the second accommodating chamber 10 coincides with the central axis of the inner ring gear assembly 5.

[0057] In some embodiments not shown, the first accommodating chamber 6 and the inner gear ring assembly 5 may be non-coaxially arranged; the second accommodating chamber 10 and the inner gear ring assembly 5 may be non-coaxially arranged, that is, eccentrically arranged, in which case the uniformity of impact resistance and buffering is poor.

[0058] In this embodiment, if Figure 3 As shown, the first accommodating chamber 6 is coaxially arranged with the inner gear ring assembly 5; the second accommodating chamber 10 is coaxially arranged with the inner gear ring assembly 5, which can improve the uniformity of impact resistance and buffering.

[0059] In one embodiment, Figure 3 As shown, the outer diameter of the first accommodating chamber 6 is larger than the major diameter of the inner spline portion 401, and the inner diameter of the first accommodating chamber 6 is smaller than the minor diameter of the outer spline portion 501; and / or, the outer diameter of the second accommodating chamber 10 is larger than the major diameter of the inner spline portion 401, and the inner diameter of the second accommodating chamber 10 is smaller than the minor diameter of the outer spline portion 501; and / or, the size of the first vibration isolation ring assembly 7 is the same as the size of the second vibration isolation ring assembly 9; and / or, the size of the first accommodating chamber 6 is the same as the size of the second accommodating chamber 10.

[0060] It should be noted that the major diameter of the inner spline portion 401 refers to the diameter at the root of the spline in the inner spline portion 401, and the minor diameter of the inner spline portion 401 refers to the diameter at the top of the spline in the inner spline portion 401; while the major and minor diameters of the outer spline portion 501 are opposite to those of the inner spline portion 401, the major diameter of the outer spline portion 501 refers to the diameter at the top of the spline in the outer spline portion 501, and the minor diameter of the outer spline portion 501 refers to the diameter at the root of the spline in the outer spline portion 501.

[0061] In this embodiment, the outer diameter of the first accommodating chamber 6 is larger than the major diameter of the inner spline portion 401, and the inner diameter of the first accommodating chamber 6 is smaller than the minor diameter of the outer spline portion 501; and / or, the outer diameter of the second accommodating chamber 10 is larger than the major diameter of the inner spline portion 401, and the inner diameter of the second accommodating chamber 10 is smaller than the minor diameter of the outer spline portion 501, thereby limiting the positions of the first accommodating chamber 6 and the second accommodating chamber 10, respectively, and facilitating the installation of the second vibration isolation ring assembly 9 and the second vibration isolation ring assembly 9; the size of the first vibration isolation ring assembly 7 is the same as the size of the second vibration isolation ring assembly 9; and / or, the size of the first accommodating chamber 6 is the same as the size of the second accommodating chamber 10, thereby improving the uniformity of the impact resistance and buffering on both sides of the inner gear ring assembly 5.

[0062] In some embodiments not shown, the outer diameter of the first accommodating chamber 6 is larger than the large diameter of the inner spline portion 401, and the inner diameter of the first accommodating chamber 6 is smaller than the large diameter of the outer spline portion 501; and / or, the outer diameter of the second accommodating chamber 10 is larger than the large diameter of the inner spline portion 401, and the inner diameter of the second accommodating chamber 10 is smaller than the large diameter of the outer spline portion 501.

[0063] In this embodiment, when the side surface on the limiting ring 8 used to limit the inner ring gear assembly 5 is at least a part of a side surface of the first accommodating chamber 6, and the side surface on the annular limiting portion 402 used to limit the inner ring gear assembly 5 is at least a part of a side surface of the second accommodating chamber 10, it is best to adopt an outer diameter of the first accommodating chamber 6 that is larger than the large diameter of the inner spline portion 401, and an inner diameter of the first accommodating chamber 6 that is smaller than the large diameter of the outer spline portion 501; an outer diameter of the second accommodating chamber 10 that is larger than the large diameter of the inner spline portion 401, and an inner diameter of the second accommodating chamber 10 that is smaller than the small diameter of the outer spline portion 501. At this time, the inner ring gear assembly 5 and the housing assembly 4 can be assembled.

[0064] In one embodiment, Figure 3 As shown, the first accommodating chamber 6 is coaxially arranged with the inner gear ring assembly 5, the second accommodating chamber 10 is coaxially arranged with the inner gear ring assembly 5, the size of the first vibration isolation ring assembly 7 is the same as the size of the second vibration isolation ring assembly 9, and the size of the first accommodating chamber 6 is the same as the size of the second accommodating chamber 10;

[0065] The size of the first accommodating cavity 6 and the size of the first vibration isolation ring assembly 7 satisfy the following formula:

[0066]

[0067] And / or, the first accommodating chamber 6 is coaxially arranged with the inner gear ring assembly 5, the second accommodating chamber 10 is coaxially arranged with the inner gear ring assembly 5, the size of the first vibration isolation ring assembly 7 is the same as the size of the second vibration isolation ring assembly 9, the size of the first accommodating chamber 6 is the same as the size of the second accommodating chamber 10; the inner spline portion 401 and the outer spline portion 501 are both helical teeth, and the size of the first accommodating chamber 6 and the size of the first vibration isolation ring assembly 7 satisfy the following formula,

[0068]

[0069] Among them, Figures 3 to 5 As shown, F r is the radial component force generated by the unbalanced force acting on the inner gear ring assembly 5, A is the outer diameter of the first accommodating cavity 6, B is the inner diameter of the first accommodating cavity 6, C1 is the length of the first vibration isolation ring assembly 7 along its radial direction, δ is the floating clearance between the inner spline portion 401 and the outer spline portion 501, C is the outer diameter of the first vibration isolation ring assembly 7, C2 is the thickness of the first vibration isolation ring assembly 7 along its axial direction, E is the elastic modulus of the first vibration isolation ring assembly 7, and F a is the axial force component generated by the unbalanced force acting on the inner gear ring assembly 5 , and B1 is the width of the first accommodating cavity 6 .

[0070] In this embodiment, when the size of the first accommodating chamber 6 and the size of the first vibration isolation ring assembly 7 satisfy the above formula, the designer can select and adjust the sizes of the first accommodating chamber 6, the second accommodating chamber 10, the first vibration isolation ring assembly 7 and the second vibration isolation ring assembly 9 according to the load range of the inner ring gear assembly 5 in the planetary gear transmission device, so that the load between the inner ring gear assembly 5 and the housing assembly 4 can be borne simultaneously by the first vibration isolation ring assembly 7, the second vibration isolation ring assembly 9, and the spline pair formed by the inner spline portion 401 and the outer spline portion 501, which can avoid the load between the inner ring gear assembly 5 and the housing assembly 4 being borne only by the first vibration isolation ring assembly 7 and the second vibration isolation ring assembly 9, and when the load is too large, the first vibration isolation ring assembly 7 and the second vibration isolation ring assembly 9 are damaged.

[0071] According to an embodiment of the present utility model, on the other hand, a vehicle is provided, comprising the planetary gear transmission device in any one of the embodiments in the second aspect.

[0072] Specifically, the vehicle may be an SUV, a sedan, an MPV or the like having a coaxial transmission device.

[0073] In this embodiment, since the vehicle includes a planetary gear transmission device, it has the same technical effect as the planetary gear transmission device and will not be described in detail here.

[0074] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A planetary gear transmission device, characterized in that: include: A housing assembly (4), wherein an internal spline portion (401) is provided in the housing assembly (4); An inner gear ring assembly (5), wherein an outer spline portion (501) is provided on an outer ring surface of the inner gear ring assembly (5); the outer spline portion (501) is connected to the inner spline portion (401) in a matching manner and has a gap fit; a first accommodating cavity (6) is provided between the outer ring surface of the inner gear ring assembly (5) and the housing assembly (4); the first accommodating cavity (6) is annular and is located on one side of the outer spline portion (501) along the axial direction of the inner gear ring assembly (5); and A first vibration isolation ring assembly (7), wherein the first vibration isolation ring assembly (7) is arranged in the first accommodating cavity (6), the outer ring surface of the first vibration isolation ring assembly (7) contacts the inner surface of the housing assembly (4), and the inner ring surface of the first vibration isolation ring assembly (7) contacts the outer ring surface of the inner gear ring assembly (5); Wherein, the length of the first accommodating cavity (6) along its radial direction is greater than the gap between the outer spline portion (501) and the inner spline portion (401).

2. The planetary gear transmission according to claim 1, characterized in that: The first vibration isolation ring assembly (7) is arranged in a compressed state along its radial direction within the first accommodating cavity (6).

3. The planetary gear transmission device according to claim 2, characterized in that: It also comprises a limiting ring (8), the limiting ring (8) being connected to the inner wall surface of the housing assembly (4), the inner wall surface of the housing assembly (4) being provided with an annular limiting portion (402), the annular limiting portion (402) and the limiting ring (8) respectively limiting the two side surfaces of the inner gear ring assembly (5) along its axial direction, and the side surface on the limiting ring (8) or the annular limiting portion (402) used for limiting the inner gear ring assembly (5) is at least a part of a side surface of the first accommodating cavity (6); And / or, the first vibration isolation ring assembly (7) is arranged in the first accommodating cavity (6) in a compressed state along its axial direction.

4. The planetary gear transmission device according to claim 3, characterized in that: It also includes a second vibration isolation ring assembly (9), and a second accommodating chamber (10) is arranged between the outer ring surface of the inner gear ring assembly (5) and the shell assembly (4); the second accommodating chamber (10) is annular; the first accommodating chamber (6) and the second accommodating chamber (10) are respectively located on both sides of the outer spline portion (501) along the axial direction of the inner gear ring assembly (5); the radial length of the second accommodating chamber (10) is greater than the gap between the outer spline portion (501) and the inner spline portion (401); the second vibration isolation ring assembly (9) is arranged in the second accommodating chamber (10); the outer ring surface of the second vibration isolation ring assembly (9) contacts the inner surface of the shell assembly (4); and the inner ring surface of the second vibration isolation ring assembly (9) contacts the outer ring surface of the inner gear ring assembly (5).

5. The planetary gear transmission device according to claim 4, characterized in that: The side surface of the limiting ring (8) used for limiting the position of the inner gear ring assembly (5) is at least a part of a side surface of the first accommodating cavity (6), and the side surface of the annular limiting portion (402) used for limiting the position of the inner gear ring assembly (5) is at least a part of a side surface of the second accommodating cavity (10); And / or, the second vibration isolation ring assembly (9) is arranged in the second accommodating cavity (10) in a compressed state along its radial direction.

6. The planetary gear transmission according to claim 5, characterized in that: The second vibration isolation ring assembly (9) is arranged in a compressed state along its axial direction within the second accommodating cavity (10).

7. The planetary gear transmission according to any one of claims 4 to 6, characterized in that: The first accommodating chamber (6) is coaxially arranged with the inner gear ring assembly (5); And / or, the second accommodating chamber (10) is coaxially arranged with the inner gear ring assembly (5).

8. The planetary gear transmission according to claim 7, characterized in that: The outer diameter of the first accommodating cavity (6) is greater than the major diameter of the inner spline portion (401), and the inner diameter of the first accommodating cavity (6) is smaller than the minor diameter of the outer spline portion (501); And / or, the outer diameter of the second accommodating cavity (10) is greater than the major diameter of the inner spline portion (401), and the inner diameter of the second accommodating cavity (10) is smaller than the minor diameter of the outer spline portion (501); And / or, the size of the first vibration isolation ring assembly (7) is the same as the size of the second vibration isolation ring assembly (9); And / or, the size of the first accommodating cavity (6) is the same as the size of the second accommodating cavity (10).

9. The planetary gear transmission according to any one of claims 4 to 6, characterized in that: The first accommodating chamber (6) is coaxially arranged with the inner gear ring assembly (5), the second accommodating chamber (10) is coaxially arranged with the inner gear ring assembly (5), the size of the first vibration isolation ring assembly (7) is the same as the size of the second vibration isolation ring assembly (9), and the size of the first accommodating chamber (6) is the same as the size of the second accommodating chamber (10); The size of the first accommodating cavity (6) and the size of the first vibration isolation ring assembly (7) satisfy the following formula: And / or, the first accommodating chamber (6) is coaxially arranged with the inner gear ring assembly (5), the second accommodating chamber (10) is coaxially arranged with the inner gear ring assembly (5), the size of the first vibration isolation ring assembly (7) is the same as the size of the second vibration isolation ring assembly (9), and the size of the first accommodating chamber (6) is the same as the size of the second accommodating chamber (10); the inner spline portion (401) and the outer spline portion (501) are both helical teeth, and the size of the first accommodating chamber (6) and the size of the first vibration isolation ring assembly (7) satisfy the following formula, Among them, F r is the radial component force generated by the unbalanced force acting on the inner gear ring assembly (5), A is the outer diameter of the first accommodating cavity (6), B is the inner diameter of the first accommodating cavity (6), C1 is the length of the first vibration isolation ring assembly (7) along its radial direction, δ is the floating clearance between the inner spline portion (401) and the outer spline portion (501), C is the outer diameter of the first vibration isolation ring assembly (7), C2 is the thickness of the first vibration isolation ring assembly (7) along its axial direction, E is the elastic modulus of the first vibration isolation ring assembly (7), and F a is the axial force component generated by the unbalanced force acting on the inner gear ring assembly (5), and B1 is the width of the first accommodating cavity (6).

10. A vehicle, characterized in that: include: A planetary gear transmission as claimed in any one of claims 1 to 9.

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