Separator ring for planetary gear transmission mechanism

Abstract

The present invention relates to a separator ring for a planetary gear transmission mechanism, comprising an annular elastomer body (4) and elastomer forming portions (6) spaced equally from each other and projecting radially (R) from the body (4), the forming portions extending parallel to a central longitudinal axis (Z) passing through the separator ring (2), wherein the separator ring (2) can be arranged on the periphery of a gear ring (26) of a planetary gear transmission mechanism.

Description

Technical Field

[0001] This invention relates to a separation ring, components, and planetary gear transmission mechanisms. Background Technology

[0002] Planetary gear transmissions have inherent acoustic drawbacks due to their structure. These can be traced back to various causes. One cause might be the vibration generated by the meshing of the planetary gears with the ring gear and / or the center gear. This vibration is transmitted through the ring gear to the transmission housing, which in turn produces uncomfortable or even disturbing airborne noise. The vibration transmitted to the housing can also be noticeable as solid-borne noise. The rotation of the planetary gears causes a third-order excitation on the ring gear, which also transmits vibration to the housing. The transmission housing, which can be made of aluminum, generally has very low damping and is excited by this excitation. This vibration can also manifest as audible airborne noise. Here, the problem is particularly pronounced in planetary gear transmission types with a fixed ring gear.

[0003] Current existing technology addresses this problem by using additional sound-absorbing materials that surround the transmission mechanism housing. Therefore, the goal so far has not been to prevent vibration as a cause of airborne noise, but rather to limit the perceptibility of airborne noise. This solution is often referred to as an NVH enclosure (Noise-Vibration-Audio Roughness) and is disadvantageous here for various reasons. Besides the high additional cost of such sound insulation, corresponding structural space must also be provided. Furthermore, this sound insulation measure is also a heat insulation mechanism, but it is precisely in the case of transmission mechanisms that it is most disadvantageous. The barrier prevents or hinders, for example, the desired heat radiation. Therefore, the cooling power of the machine cooling the transmission mechanism must be increased, resulting in higher energy consumption and / or more powerful cooling machines. Summary of the Invention

[0004] Therefore, the present invention is based on the objective of providing a mechanism to prevent vibrations, particularly those that cause air noise in planetary gear transmission mechanisms.

[0005] According to the present invention, a separation ring for a planetary gear transmission mechanism is provided, comprising an annular elastomer body and elastomer forming portions that are equidistant from each other and protrude radially from the body, the elastomer forming portions extending parallel to the central longitudinal axis passing through the center of the separation ring, wherein the separation ring can be arranged on the periphery of the gear ring of the planetary gear transmission mechanism.

[0006] In short, this invention can be used to interrupt the vibration transmission path between two components. These components can be, for example, a gear ring and a transmission housing in the case of a planetary gear transmission mechanism. Through the elasticity of the elastomer combined with the material damping effect of the elastomer, unwanted vibrations can be reduced, and the transmission of vibrations to other components or multiple other components can be prevented. In addition to improved NVH performance, the aforementioned NVH cover can be eliminated. Consequently, heat dissipation of the transmission mechanism is significantly simplified, reduced in cost, and resources are conserved.

[0007] With the help of a separation ring, two components, such as a gear ring and a housing, can be separated from each other in at least one spatial direction, but preferably in all spatial directions (torsional, axial, radial). Because there is no metal-to-metal contact between the two metal components via the elastomer, the transmission of solid-borne sound is optimally interrupted by the vibration-damping elastomer. Therefore, the phenomenon known as "durchklingeln" does not occur.

[0008] In the case of planetary gear transmission mechanisms, the present invention also leads to the possibility of structurally simple design of the gear ring, which can have small dimensional accuracy by arranging a separation ring on the circumference, since the elastomer can compensate for the error.

[0009] The formed portion can protrude radially inward and / or outward and serves as support for the inner and / or outer circumferential sides. The rigidity of the separation ring can be adjusted by the radial extension length of the formed portion; a small radial extension length results in a soft separation ring, while a large radial extension length achieves a rigid separation ring.

[0010] The forming part can be a separate part that is fixedly connected to the main body, or it can be designed to be bonded to the main body material and integrated into it.

[0011] According to an improved version of the separating ring, the forming part may have at least one press-fit surface, through which the forming part can press-fit against a component such as a housing or gear ring. Through this press-fit surface, the forming part and possibly the body can be pre-tightened by the component abutting thereon. Advantageously, each forming part includes two press-fit surfaces. It is conceivable that one of these press-fit surfaces is arranged about each side of the longitudinal center plane, preferably mirror-symmetrical with respect to it. These press-fit surfaces may have a straight or curved cross-sectional orientation.

[0012] According to an improved version of the separating ring, the at least one press-fit surface can extend at an angle relative to the longitudinal center plane of the separating ring. This central longitudinal axis also lies within the longitudinal center plane. The longitudinal center plane can centrally pass through the forming portion. Similar to the press-fit surface located within the longitudinal center plane, the larger elastic body surface of the forming portion can be used as a press-fit surface by means of this inclination. Furthermore, this significantly simplifies the manufacturability of the component abutting it, because the angle of the mating clips of the components can therefore be significantly less than 90°.

[0013] According to an improved embodiment of the separating ring, the body and / or the formed portion may have at least one free surface that at least partially defines a cavity in the installed state. The installed state is such that the separating ring is positioned on at least one component. In the installed state, no other component is abutted against the free surface. The contour of the body and / or the formed portion can be designed such that, in the unloaded state or the installed state, a cavity exists relative to the abutting component, into which the elastomer of the body and / or the formed portion can be pressed under force. Thus, elasticity is achieved on the one hand, and a progressive characteristic curve is generated on the other. That is, once the cavity is filled with the elastomer, the rigidity increases. Therefore, a flexible characteristic mark can be generated under small loads, the torsional angle is limited under high loads, and this or these components are thus overload protected. Additionally or alternatively, the components, such as gear rings and / or housings, can also be designed to create cavities. The mating surface can, for example, retract relative to the position of the abutting free surface to form a gap therebetween. The same applies additionally or alternatively to the corresponding free surfaces. The cavity can be formed in the installed state between the separation ring and at least partially abutting the component. Free surfaces can be formed, for example, between adjacent formed portions and on the top of the formed portions. The side surface of the formed portion may also include free surfaces, at least partially.

[0014] According to an improved embodiment of the separating ring, the forming portion can have an elongated hexagonal cross-sectional profile. The hexagon can be elongated circumferentially. Thus, the two short sides of the hexagon pointing circumferentially can fulfill different functions. One of the short sides can have or form a press-fit surface inclined relative to the longitudinal center plane. The other of each of the two short sides can form a lateral concave shape, which can expand the cavity. This short side can form a crescent-shaped recess (Hohlkehle) with the body, for example, and / or enclose an angle, which is at most 90°, but preferably in the range of 90° to 80°, more preferably 85°. The length of the free side of the hexagon can form and / or include a free surface and / or form and / or include a top surface of the forming portion.

[0015] According to an improved embodiment of the separating ring, the body and / or the forming portion may have at least one stop buffer, wherein the stop buffer is preferably arranged on or includes the free surface. The stop buffer may be an elastomeric section thickened relative to the adjacent portion. The stop buffer can be constructed in a manner that is uniform with and / or integral with the material of the body or the forming portion. The stop buffer may also form the free surface itself. It is conceivable that the forming portion has multiple stop buffers. It is also conceivable that each cavity is associated with at least one stop buffer. The stop buffer can be arranged such that it acts as a radial stop buffer in the radial direction or as an axial stop buffer in the axial direction. In the latter variation, for example, the forming portion may have at least one longitudinally extending stop buffer located on its end face. This axial stop buffer also serves as a buffer, since the gear ring can be axially fixed on both sides. If the end face is, for example, metal, there is no elastomeric interruption of the sound path.

[0016] According to an improved version of the separating ring, it can include a supporting ring on the inner or outer circumferential side. An elastomeric body with a shaped portion is mounted, preferably vulcanized, on a support ring. The support ring serves to ensure the shape stability of the release ring, particularly during its installation, and to improve its rigidity. The support ring may have the elastomeric body only on its radially pointing sides, where the other side is blank or uncoated. Through the blank side, the support ring can be pressed together with a component. The support ring is made of metal, preferably aluminum alloy, steel plate, or plastic. Instead of vulcanization, at least the body can be manufactured separately from the support ring and subsequently mounted on the support ring by means of friction fit and / or form fit connection.

[0017] According to an improved embodiment of the separating ring, the support ring may include core teeth on the outer or inner circumferential side and / or support teeth on the inner or outer circumferential side, wherein the ratio of the number of core teeth to the number of support teeth is preferably 1:2. Each core tooth can therefore be associated with two support teeth. The core teeth can be arranged to project relative to one side of the support ring, and the support teeth can be arranged to project relative to the other side. The teeth can project radially from the body of the support ring. The teeth can, for example, have a triangular, rectangular, or trapezoidal cross-sectional profile. The teeth can also have a press-fit connecting bar extending longitudinally. Preferably, only the support teeth have such a press-fit connecting bar. The press-fit connecting bar prevents unfavorable full contact with a component during press-fit connection. The support ring can be pressed onto a component by means of the support teeth. The teeth, and especially the support teeth, are used to engage into correspondingly shaped mating engagement shapes and can transmit large alternating torques, which is particularly advantageous in planetary gear transmission mechanisms with non-fixed gear rings.

[0018] According to an improved version of the separating ring, an imaginary extension line of the flank of each core tooth can extend through the corresponding support tooth. The imaginary extension line is a straight line (i.e., an imaginary straight line) on the flat flank of the core tooth. On the raised flank of the core tooth, the extension line is a curve (or an imaginary curve). This design improves the stability of the support ring and prevents force flow constriction within the support ring.

[0019] According to an improved version of the separating ring, each core tooth can form a core of an elastomeric forming portion. This forming portion thus at least partially encloses and covers the core tooth. Preferably, the core tooth and the forming portion are mutually centered in the circumferential and / or longitudinal directions. The core tooth, as the core, improves the stability of each forming portion. Additionally, other advantages can be achieved through structural adaptation of the forming portion / core tooth pair. For example, the cross-section of the core tooth can be designed as trapezoidal and the cross-section of the forming portion as hexagonal. In this case, a plurality of elastomeric elements of the forming portion can be provided above the side surface of the core tooth in the normal direction to provide a large pad there. However, the hexagonal shape also creates a space or cavity into which the elastomeric elements can be squeezed in the installed or stressed state. The elastomeric forming portion can be partially trapezoidal in shape and / or extend from the side surface of the core tooth.

[0020] According to an improved version of the separation ring, the thickness of the elastomer on the top surface of the mandrel can be less than that on the side surface. Here, the normals of the top and side surfaces of the mandrel are related. The elastomer can form a free surface on the top surface of the mandrel. It is conceivable that the force is transmitted only through the side surface of the mandrel and the top of the mandrel is removed from the force flow. Thus, the thickness of the elastomer can be reduced accordingly, and there is a possibility of forming a cavity.

[0021] According to an improved version of the separation ring, the support ring and / or body can be constructed in multiple parts. These parts can be assembled before or during installation. This saves space within the vulcanizing mold, thereby potentially increasing the number of cavities. The same advantages are also obtained for transportation, as they can be arranged in a space-saving manner.

[0022] According to the invention, an assembly for a planetary gear transmission mechanism is also proposed, comprising a separator ring according to the present invention and a gear ring of the planetary gear transmission mechanism, wherein the separator ring is arranged on the periphery of the gear ring, and / or a transmission mechanism housing, wherein the separator ring may be arranged on the inner periphery of the transmission mechanism housing. Similarly, this assembly has the advantages already described above with respect to the separator ring, and reference is made thereto.

[0023] According to an improved embodiment of the component, the release ring can be directly vulcanized onto the gear ring, positioned as a separate part by means of friction fit and / or form fit, or pressed together with the gear ring by a support ring. The two first variations do not require an additional support ring. The elastomer can be designed such that only the gear ring is partially covered with the elastomer in a material-bonded manner. The component can then be pressed into a housing or transmission housing surrounding the component on its outer periphery and held there by the elastomer coating in a force-transmitting fit on the corresponding mating profiles.

[0024] Alternatively, the separation ring can be directly vulcanized into the housing, housed as a separate part within the housing via friction fit and / or form fit, or pressed together with the housing by a support ring. These two first variations do not require an additional support ring. The elastomer can be configured such that only a portion of the housing is locally covered with the elastomer in a material-bonded manner. The assembly can then be pressed onto a toothed ring, where it is held in a force-transmitting fit on the mating profile of the effect by the elastomer coating.

[0025] Furthermore, according to the present invention, a planetary gear transmission mechanism is proposed, comprising a separator ring, a gear ring, and a transmission mechanism housing as described herein, wherein the separator ring can be arranged between the gear ring and the transmission mechanism housing surrounding the gear ring on its outer periphery. The planetary gear transmission mechanism can be of the type having a fixed gear ring. The separator ring advantageously engages and disengages the two components. Similarly, the advantages already described above regarding the separator ring also apply to the planetary gear transmission mechanism, and reference is made herein.

[0026] According to an improvement on the planetary gear transmission mechanism, the number of the formed portions can be an integer multiple of the number of planetary gears. The planetary gear transmission mechanism of the present invention may include planetary gears. This advantageously results in all planetary gears being supported equally in every position, thereby supporting rotation and avoiding vibration. Attached Figure Description

[0027] Other features, details, and advantages of the present invention are derived from the wording of the claims and the following description of embodiments in conjunction with the figures, wherein:

[0028] Figure 1 A perspective view of the components according to the present invention is shown.

[0029] Figure 2 Showing according to Figure 1 A perspective view of the separation ring of the present invention.

[0030] Figure 3 Showing according to Figure 2 Detailed diagram of the separation ring.

[0031] Figure 4A detailed view of a planetary gear transmission mechanism with a separator ring according to the second embodiment is shown, and

[0032] Figure 5 A detailed diagram of a planetary gear transmission mechanism with a separation ring according to a third embodiment is shown.

[0033] List of reference numerals

[0034] 2 Separation ring

[0035] 4. Main Body

[0036] 6 Forming section

[0037] 8. Press mating surfaces

[0038] 10 Free Side

[0039] 12 hexagons

[0040] 14. Stop and buffer body

[0041] 16 Supporting rings

[0042] 18-core teeth

[0043] 20 Support teeth

[0044] 22. Side profile of the core tooth

[0045] 24 core tooth top surface

[0046] 26 Gear Ring

[0047] 28 base teeth

[0048] 30 Press-fit Connecting Strip

[0049] 32 Trapezoid

[0050] 34 First short side

[0051] 36 Second shorter side

[0052] 38 Top surface of the forming part

[0053] 40 Intermediate surface

[0054] 42 Crescent Moon

[0055] 44 Elastomer Coating

[0056] 46 Transmission mechanism housing

[0057] 48 Cavity

[0058] D Thickness

[0059] E Longitudinal Center Plane

[0060] L longitudinal

[0061] R radial

[0062] U Zhou Xiang

[0063] V8 extension cable

[0064] V22 extension cable

[0065] Z-center longitudinal axis

[0066] α1 Angle

[0067] α2 angle

[0068] α3 angle

[0069] α4 angle Detailed Implementation

[0070] In the figures, identical or corresponding components are marked with the same reference numerals and therefore will not be repeated unless it is inappropriate. Features already described will not be repeated to avoid duplication and can be used for all components with the same or corresponding reference numerals unless explicitly excluded. The disclosure contained throughout the specification can be applied, in its meaning, to the same components with the same reference numerals or the same component names. Locational descriptions selected in the specification, such as upper, lower, side, etc., also apply to the figures immediately described and shown, and are adapted to the new location in accordance with their meaning when the location changes. Furthermore, features or combinations of features from the different embodiments shown and described may also be individual, inventive, or solutions according to the invention.

[0071] Figure 1 An embodiment of the component according to the invention is shown, comprising a ring gear 26 of a planetary gear transmission mechanism and a separator ring 2. The ring gear 26 has teeth on its inner circumferential side for meshing with planetary gears (not shown) of the planetary gear transmission mechanism in a known manner. On its outer circumferential side, the ring gear 26 has base teeth 28 equidistant in the circumferential direction U. The ring gear 26 or the component is traversed by a central longitudinal axis Z along the longitudinal direction L.

[0072] Separation ring 2 is arranged around the circumference of gear ring 26. In the first embodiment shown, the separation ring includes an elastomer body 4 and elastomer-shaped portions 6 extending radially outwards and equidistantly from each other, parallel to the central longitudinal axis Z. Separation ring 2 also includes a support ring 16 made of aluminum alloy. (The gear ring 26 is omitted from the translation.) Figure 2 As shown, the support ring 16 has support teeth 20 evenly spaced along the circumferential direction U on its inner circumferential side. The support teeth 20 of the support ring 16 and the base teeth 28 of the gear ring 26 mesh with each other, wherein the separating ring 2 is pressed together with the gear ring 26 by the support ring 16.

[0073] like Figure 3As shown in detail, the support ring 16 has core teeth 18 evenly spaced circumferentially U on its outer periphery. Since each core tooth 18 is associated with two support teeth 20, their ratio is 1:2. The core teeth 18 and support teeth 20 protrude in different radial directions R. The core teeth 18 and support teeth 20 have trapezoidal cross-sectional profiles, with their long sides on the support ring 16. The support teeth 20 have press-fit connecting strips 30 extending longitudinally L. Three press-fit connecting strips 30 are provided on the top side, and two press-fit connecting strips 30 are provided on each of these sides. The release ring 2 can be pressed onto the toothed ring 26 by means of the press-fit connecting strips 30. The imaginary extension line V22 of the core tooth side surface 22 of the core tooth 18 extends through the corresponding support tooth 20, preferably between the side surface and the top surface. The core tooth side surface 22 is inclined at an angle α1 relative to the longitudinal center plane E (in which the central longitudinal axis Z is located and which passes centrally through the forming part 6). Angle α1 can be in the range of 10° to 50°, preferably between 20° and 40°, and more preferably 30°. Angle α1 crosses the boundary between the longitudinal center plane E and the extension line V22 in a positive manner.

[0074] Figure 3 Three identical forming portions 6 are also shown in the cross-sectional view of the separating ring 2, wherein the elastomer body 4 is vulcanized onto the support ring 16 as forming portions 6. The support ring 16 is thus completely covered by the elastomer on its outer circumferential side. Each core tooth 18 forms the core of the elastomer forming portion 6, wherein the two are mutually centered in the circumferential direction U and the longitudinal direction L. Each core tooth 18 has a symmetrical trapezoidal outer contour, and each forming portion 6 has an elongated hexagonal outer contour 12, as shown here by dotted lines. It can also be seen that the forming portions 6 are respectively trapezoidal 32 in cross-section above the core tooth side surface 22, as shown here by short dashed lines. Thus, a large amount of elastomer can be arranged in the normal direction above the core tooth side surface 22, which is indicated here by thickness D. Furthermore, the thickness of the elastomer on the core tooth top surface 24 can be less than that on the core tooth side surface 22.

[0075] Each trapezoid 12 has two short sides on its two sides, referred to as the first short side 34 and the second short side 36. Sides 34 and 36 form the side surfaces of each forming part 6. The two sides 34 and 36 can enclose each other to form an angle α2 in the range of 175° to 90°, preferably in the range of 150° to 120°, where it is 135° in this example. Advantageously, the second short side 36 encloses the longitudinal center plane E to form a negative angle α3. Thus, the second short side 36 forms a lateral concave shape. The first short side 34 encloses the longitudinal center plane E to form a positive angle α4. Angle α4 can be in the range of 10° to 50°, preferably in the range of 20° to 40°, and more preferably 30°. The first short side 34 of the forming part 6 defines the top surface 38 of the forming part. The second short side 36 of the adjacent forming part 6 defines the intermediate surface 40 of the body 4. Each second short side 36 transitions to the intermediate surface 40 through a crescent-shaped recess 42.

[0076] As can be seen, each top surface 38 and each intermediate surface 40 of the forming part has a stop buffer 14. Therefore, the main body 4 and the forming part 6 include stop buffers 14. The radial stop buffers provide a buffering effect in the radial direction R. The other stop buffers 14 are... Figure 1 As shown in the diagram, an axial stop buffer is arranged at least on one end face of the formed portion 6 and provides axial buffering in the longitudinal direction L. It can also be seen that the stop buffer 14 is designed as an elastomeric section that is thickened relative to the adjacent portion.

[0077] Each formed part 6 has two press-fit surfaces 8. The press-fit surfaces 8 coincide with the first short side 34. Each press-fit surface 8 is designed to be pre-tightened in the installed state by a mating geometry abutting against it. An elastomer coating 44 is used for this purpose. Figure 3 In the figure, the housing or transmission mechanism housing 46 in its installed state is shown by a dashed line at the formed part 6 on the right side. The transmission mechanism housing 46 forms a mating geometry with mating surfaces and abuts only the press-fit surface 8. The press-fit surface 8 is inclined at an angle α4 relative to the longitudinal center plane E. The angle α4 is defined in a positive manner between the longitudinal center plane E and the extension line V8 of the press-fit surface 8. V8 and V22 may extend parallel to each other.

[0078] In addition to the press-fit surface 8, the separation ring 2 also has a free surface 10. In the installed state, the unpaired geometry rests against the free surface 10. The free surface 10 coincides with the top surface 38 of the forming part, the middle surface 40, and the two short sides 36. The free surface 10 defines a cavity 48 with each pairing geometry. A large cavity 48 can be formed in adjacent forming parts 6 by using a negative angle α3.

[0079] Figure 4 and Figure 5The design is extremely simplified and, in principle, uses only the single formed part 6 as an example; other designs should be shown instead. The teeth of the gear ring 26, present on the inner circumferential side, are omitted. Figure 4 In this design, the release ring 2 does not include the support ring 16. The release ring 2 is vulcanized onto the gear ring 26 or the transmission housing 46, or is mounted as a separate part on the gear ring 26 and / or the transmission housing 46 by means of friction fit and / or form fit. The release ring 2 follows the rectangular contour of the gear ring 26 and the transmission housing 46 with its cross-sectional variation. The cavity 48 between the release ring 2 and the gear ring 26 and / or the transmission housing 46 is not shown, but it is entirely permissible.

[0080] Figure 5 In principle, show Figures 1 to 3 The implementation method is different, but in the radially interchanged direction. The separating ring 2 now has the supporting ring 16 on the outer circumferential side instead of the inner circumferential side. Therefore, the separating ring 2 is pressed together with the transmission housing 46 by the supporting ring 16.

[0081] This invention is not limited to one of the embodiments described above, but can be modified in many ways. All features and advantages derived from the claims, description, and figures, including structural details, spatial arrangements, and method steps, are important to the invention not only individually but also in various combinations.

[0082] All combinations of at least two features disclosed in the specification, claims and / or figures fall within the scope of this invention.

[0083] To avoid duplication, features disclosed in relation to the apparatus should also be considered as disclosed in relation to the method and are claimable. Similarly, features disclosed in relation to the method should be considered as disclosed in relation to the apparatus and are claimable.

Claims

1. A separator ring for a planetary gear transmission mechanism, the separator ring comprising elastomeric forming portions (6) and an annular elastomeric body (4), the elastomeric forming portions (6) being evenly spaced apart from each other and projecting radially (R) from the body (4), the elastomeric forming portions extending parallel to a central longitudinal axis (Z) centrally passing through the separator ring (2), wherein, The separation ring (2) can be arranged around the circumference of the gear ring (26) of the planetary gear transmission mechanism. These elastomeric forming parts (6) have at least one press-fit surface (8), which allows the elastomeric forming part to press-fit against a component. The separating ring includes a supporting ring (16) on its inner or outer circumferential side, and the elastomer body (4) is mounted on the supporting ring by the elastomer forming part (6). The supporting ring (16) includes core teeth (18) on the outer or inner circumferential side. Each core tooth (18) forms the core of an elastomer forming part (6). The core teeth extend radially from the body of the support ring.

2. The separating ring according to claim 1, characterized in that, The component is a housing or a gear ring (26).

3. The separating ring according to claim 2, characterized in that, The at least one press-fit surface (8) extends at an angle (α4) relative to the longitudinal center plane (E) of the separation ring (2).

4. The separating ring according to any one of the preceding claims, characterized in that, The elastomer body (4) is vulcanized on the support ring by the elastomer forming part (6).

5. The separating ring according to claim 4, characterized in that, The supporting ring (16) includes supporting teeth (20) on the inner or outer circumferential side.

6. The separating ring according to claim 5, characterized in that, The extension line (V22) of the side face (22) of each core tooth (18) extends through a corresponding support tooth (20).

7. The separating ring according to claim 5, characterized in that, The ratio of the number of core teeth to the number of support teeth is 1:

2.

8. An assembly for a planetary gear transmission mechanism, the assembly comprising a gear ring (26) of the planetary gear transmission mechanism and a separation ring (2) according to any one of claims 1 to 7 and / or a transmission mechanism housing (46), wherein, The separation ring (2) is arranged on the circumference of the gear ring (26), wherein the separation ring is arranged on the inner circumference of the transmission mechanism housing (46).

9. A planetary gear transmission mechanism, the planetary gear transmission mechanism comprising a gear ring (26), a transmission mechanism housing (46), and a separation ring (2) according to any one of claims 1 to 7, wherein, The separation ring (2) is arranged between the gear ring (26) and the transmission mechanism housing (46) surrounding the gear ring (26) on the outer periphery.

10. The planetary gear transmission mechanism according to claim 9, characterized in that, The number of the elastomer forming parts (6) is an integer multiple of the number of planetary gears.

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