Reducing mechanism and steering column hand feeling simulator

Abstract

The utility model discloses a speed reducing mechanism and a steering column hand feeling simulator, and the speed reducing mechanism comprises an inner gear ring; the sun gear is movably mounted in the center of the inner gear ring, and the sun gear is used for corresponding to a speed reduction input end; the planet gears are arranged in the inner gear ring, outer teeth of the planet gears are meshed with inner teeth of the inner gear ring and outer teeth of the sun gear respectively, and the planet gears are used for corresponding to the speed reduction output end; wherein at least one planet gear comprises a first planet gear and a second planet gear which are the same in gear parameter, and the first planet gear and the second planet gear are connected in the mode that an elastic component and a matching part are matched with each other; wherein one of the elastic component and the matching part is arranged on the first planetary gear, and the other one of the elastic component and the matching part is arranged on the second planetary gear. By means of the structure, gaps generated in the planetary gear meshing transmission process when a driver rotates the steering wheel can be eliminated, steering abnormal sounds are avoided, and the steering quality is improved.

Description

Technical Field

[0001] This application relates to the field of automotive technology, and in particular to a deceleration mechanism and a steering column feel simulator having the deceleration mechanism. Background Technology

[0002] Assisted steering is a technology that helps drivers control a vehicle more easily by increasing steering assistance during driving. This technology can significantly reduce the steering effort required by the driver at low speeds or in situations with low grip, thereby improving driving stability and comfort.

[0003] Currently, the planetary gears in the planetary reduction mechanism of steering column feel simulator reducers on the market often fail to meet the ideal design parameters due to manufacturing factors such as processing and assembly errors. This significantly affects the repeatability of the overall reducer mechanism, resulting in abnormal noises or uneven steering feel when the driver turns the steering wheel during driving. Utility Model Content

[0004] This application designs a reduction mechanism with a planetary gear backlash elimination structure. Without reducing the functionality and performance of the hand-feel simulator, the planetary gear backlash elimination structure can effectively eliminate the meshing backlash during the movement of the reduction mechanism and reduce the motor noise during motor operation.

[0005] On the one hand, in order to achieve the above-mentioned and other related objectives, this application provides a speed reduction mechanism, including:

[0006] Internal gear ring;

[0007] The sun gear is movably mounted at the center of the internal gear ring and is used to correspond to the reduction input end.

[0008] Planetary gears, multiple planetary gears are located inside the internal gear ring, and the external teeth of the planetary gears mesh with the internal teeth of the internal gear ring and the external teeth of the sun gear, respectively. The planetary gears are used to correspond to the reduction output end;

[0009] At least one planetary gear includes a first planetary gear and a second planetary gear with the same gear parameters. The first planetary gear and the second planetary gear are connected to each other by a flexible component and a mating part.

[0010] One of the elastic component and the mating part is disposed on the first planetary gear, and the other of the elastic component and the mating part is disposed on the second planetary gear.

[0011] Furthermore, this application provides a speed reduction mechanism in which a groove for accommodating an elastic member is provided on a first planetary gear, the groove also accommodating a mating portion that cooperates with the elastic member, and a mating portion that cooperates with the elastic member is provided on a second planetary gear; and / or, a groove for accommodating the elastic member is provided on the second planetary gear, the groove also accommodating the mating portion that cooperates with the elastic member, and a mating portion that cooperates with the elastic member is provided on the first planetary gear.

[0012] Furthermore, this application provides a deceleration mechanism in which the groove includes a straight section and an annular groove section; the straight section is used to accommodate an elastic component, and the annular groove section is used to accommodate a mating part; the mating part can slide along the annular groove section.

[0013] Furthermore, this application provides a deceleration mechanism in which one end of the elastic member abuts against the end face of the straight segment of the groove away from the annular groove segment, and the other end abuts against the connection between the straight segment and the annular groove segment.

[0014] Furthermore, this application provides a deceleration mechanism in which the length of the straight section of the groove is the same as the length of the elastic member in its natural state; the mating part can slide into the straight section along the annular groove to compress the elastic member.

[0015] Furthermore, in the deceleration mechanism provided in this application, the surface of the mating part that contacts the elastic component is a plane.

[0016] Furthermore, this application provides a speed reduction mechanism in which multiple elastic components and mating parts are provided between the first planetary gear and the second planetary gear.

[0017] Furthermore, this application provides a speed reduction mechanism in which a first planetary gear and a second planetary gear are arranged in close contact along the axial direction.

[0018] Furthermore, the present application provides a speed reduction mechanism in which the internal teeth of the internal gear ring, the external teeth of the sun gear, and the external teeth of the planet gears are all helical teeth.

[0019] Furthermore, in an embodiment of this application, a steering column feel simulator is also provided, which has the aforementioned deceleration mechanism.

[0020] The reduction mechanism with planetary gear backlash elimination mechanism and the steer-by-wire column feel simulator with the reduction mechanism of this application have at least the following advantages:

[0021] (1) The central axis of the deceleration input end is coincident with or parallel to the central axis of the steering shaft, so that the steer-by-wire column hand feel simulator with the new deceleration mechanism with planetary gear backlash elimination structure can be directly driven by the motor output shaft, and the structure is compact.

[0022] (2) The gears of the reduction mechanism adopt helical teeth. By designing the gear parameters, the reduction ratio requirements of different motors are met.

[0023] (3) At least one planetary gear consists of two gears with the same parameters, and the two gears are connected by setting the mutually cooperating elastic parts and the cooperating parts on different gears, so that the planetary gear and the sun gear can always maintain a meshing state, which can reduce the operating noise of the motor and make the space arrangement of the reduction mechanism compact and easy to arrange. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or in the conventional technology, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the overall structure of the steering column feel simulator of this application;

[0026] Figure 2 An exploded view of the steering column feel simulator of this application;

[0027] Figure 3 This is a schematic diagram of the reduction mechanism with a planetary gear backlash elimination structure according to this application;

[0028] Figure 4 This is an exploded view of the structure of the planetary gear in this application, which consists of two planetary gears;

[0029] Figure 5 This is a structural diagram of the first planetary gear of this application;

[0030] Figure 6 This is a structural diagram showing the straight section of the groove in the first planetary gear where the elastic component is located.

[0031] Figure 7 This is a structural diagram of the second planetary gear of this application;

[0032] Figure 8 This is a schematic diagram of the structure when the rotating shaft of this application is connected to the planetary gears.

[0033] Label Explanation:

[0034] 1. Reduction mechanism; 2. Internal gear ring; 3. Sun gear; 4. Planetary gear; 5. Reduction input end; 6. Reduction output end; 7. Assist motor; 8. Rotary shaft; 9. Control device; 10. Upper column assembly; 11. Mounting base; 31. First gear; 32. Central shaft; 41. First planetary gear; 42. Second planetary gear; 43. Pin; 44. Elastic component; 46. Mating part; 47. Groove; 471. Straight section; 472. Annular groove section; 81. Rotary disk; 82. Input shaft; 83. Rotary shaft shaft; 101. Upper column housing; 102. First housing; 103. Second housing. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the various embodiments of this application will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details are presented in the various embodiments of this application to facilitate a better understanding of the application. However, the technical solutions claimed in this application can be implemented even without these technical details and various variations and modifications based on the following embodiments. The division of the various embodiments below is for ease of description and should not constitute any limitation on the specific implementation of this application. The various embodiments can be combined with and referenced by each other without contradiction.

[0036] This embodiment provides a reduction mechanism with a planetary gear backlash elimination structure. The planetary gear set consists of two gears with the same parameters. By connecting the mutually cooperating elastic components and mating parts on different gears, the planetary gears and the sun gear can always maintain a meshing state. This can reduce the speed of the motor and increase the torque while eliminating the backlash in the meshing transmission process of the planetary gears when the driver reciprocates to turn the steering wheel. This avoids abnormal noises or uneven steering feel when the driver turns the steering wheel during driving, and improves the steering quality.

[0037] The following describes in detail, with reference to the accompanying drawings, a speed reduction mechanism with a planetary gear backlash elimination structure provided in this embodiment.

[0038] like Figures 2-7As shown, this application provides a speed reduction mechanism 1, which includes: an internal gear ring 2, the internal gear ring 2 having a circular ring structure and having internal teeth; a sun gear 3, the sun gear 3 being movably mounted at the center of the internal gear ring 2, the sun gear 3 being used to correspond to the speed reduction input end 5; planet gears 4, a plurality of planet gears 4 being disposed within the internal gear ring 2, the external teeth of the planet gears 4 meshing with the internal teeth of the internal gear ring 2 and the external teeth of the sun gear 3 respectively, the planet gears 4 being used to correspond to the speed reduction output end 6; wherein, at least one planet gear 4 includes a first planet gear 41 and a second planet gear 42 with the same gear parameters, the first planet gear 41 and the second planet gear 42 being connected by an elastic member 44 and a mating part 46 engaging with each other; wherein, one of the elastic member 44 and the mating part 46 is disposed on the first planet gear 41, and the other of the elastic member 44 and the mating part 46 is disposed on the second planet gear 42. Figure 3 The image shows a reduction mechanism 1 in which a planetary gear 4 is connected by two planetary gears with identical parameters through an elastic member 44 and a mating part 46. In this embodiment, the elastic member 44 can be a spring or other compressible structure that provides elastic force, and the mating part 46 can be any structure that can compress the spring, and its shape is not limited, such as a wedge.

[0039] like Figure 1 and Figure 2 As shown, this application provides a steering column feel simulator, including: a reduction mechanism 1, a power assist motor 7, an upper column assembly 10, and a control device 9. The upper column assembly 10 is installed on one side of the power assist motor 7; the reduction mechanism 1 is installed between the upper column assembly 10 and the power assist motor 7, the reduction output end 6 of the reduction mechanism 1 is connected to the power input end of the upper column assembly 10, and the reduction input end 5 of the reduction mechanism 1 is connected to the power output end of the power assist motor 7. The central axis of the reduction input end 5 coincides with the central axis of the reduction output end 6; the control device 9 is electrically connected to the power assist motor 7 to control the steering and speed of the power output end of the power assist motor 7 according to the steering signal.

[0040] In this embodiment, when the deceleration mechanism 1 and the upper column assembly 10 are driven to rotate by the assist motor 7, the deceleration input end 5 of the deceleration mechanism 1 is driven by the assist motor 7, and then the input power of the deceleration input end 5 is decelerated by the deceleration mechanism 1 and output through the deceleration output end 6. When outputting through the deceleration output end 6, the axial direction of the deceleration input end 5 is aligned with the axial direction of the deceleration output end 6. This ensures that when the power assist motor 7 is decelerated by the deceleration mechanism 1, the function and performance of the hand feel simulator are not reduced, and the deceleration mechanism 1 can reduce the speed and increase the torque of the power assist motor 7. This is achieved by setting at least one of the planetary gears 4 as two gears with the same parameters, and the two gears are connected by an elastic component 44 and a mating part 46. One of the elastic component 44 and the mating part 46 is set on the first planetary gear 41, and the other is set on the second planetary gear 42. This can reduce the speed of the motor and increase the torque while eliminating the gap in the meshing transmission of the planetary gears when the driver turns the steering wheel back and forth. This avoids abnormal noise or uneven steering feel when the driver turns the steering wheel during driving, and improves the steering quality. Of course, in other embodiments, the first planetary gear 41 may also be provided with both the elastic component 44 and the mating part 46, and the second planetary gear 42 may also be provided with both the elastic component 44 and the mating part 46. The elastic component 44 on the first planetary gear 41 and the mating part 46 in the second planetary gear 42 are connected to each other, and the mating part 46 on the first planetary gear 41 and the elastic component 44 in the second planetary gear 42 are connected to each other. The number of elastic components 44 and mating parts 46 is not limited, as long as the elastic components 44 and mating parts 46 are connected in a one-to-one correspondence.

[0041] Optionally, in some embodiments of this application, a groove 47 for accommodating the elastic member 44 is provided on one of the first planetary gear 41 and the second planetary gear 42; the groove 47 also accommodates a mating part 46 provided on the other of the first planetary gear 41 and the second planetary gear 42 that cooperates with the elastic member 44.

[0042] Specifically, in combination Figures 4-7 As shown, in this application, an elastic member 44 is installed in a groove 47 provided on the first planetary gear 41, with a space left at one end of the elastic member 44 to accommodate the mating part 46 on the second planetary gear 42. By accommodating both the elastic member 44 and the mating part 46 in the groove 47, the mating part 46 can compress the elastic member 44, thereby ensuring that the planetary gear and the sun gear remain in a meshed state. In other words, the shape of the groove 47 is not limited in this embodiment, as long as it allows both the elastic member 44 and the mating part 46 to be accommodated therein and to interact with each other.

[0043] Furthermore, in the embodiments of this application, the groove 47 includes a straight segment 471 and an annular groove segment 472; the straight segment 471 is used to accommodate the elastic member 44, and the annular groove segment 472 is used to accommodate the mating part 46; the mating part 46 can slide along the annular groove segment 472.

[0044] Specifically, in combination Figure 4-7 As shown, the groove 47 in this application includes two sections: one is a straight section 471 for accommodating the elastic member 44, and the other is an annular groove section 472 for accommodating the mating part 46. The mating part 46 can slide along the annular groove section 472, thereby allowing the mating part 46 to slide and compress the elastic member 44, thus smoothly ensuring that the planetary gear and the sun gear can always maintain a meshing state.

[0045] Furthermore, in the embodiments of this application, one end of the elastic member 44 abuts against the end face of the straight segment 471 of the groove 47 away from the annular groove segment 472, and the other end abuts against the connection between the straight segment 471 and the annular groove segment 472.

[0046] Specifically, in the embodiments of this application, the elastic member 44 can occupy the straight segment 471 of the entire groove 47, that is, the mating part 46 can be subjected to the elastic force of the elastic member 44 once it slides into the straight segment 471.

[0047] Furthermore, in the embodiments of this application, the length of the straight segment 471 of the groove 47 is the same as the length of the elastic member 44 in its natural state; the mating part 46 can slide into the straight segment 471 along the annular groove segment 472 to compress the elastic member 44.

[0048] Specifically, in combination Figure 4-6 As shown, the length of the straight segment 471 of the groove 47 is equal to the natural length of the elastic member 44. Therefore, when the elastic member 44 is placed in the straight segment 471, it is in its natural state. The longer the mating part 46 slides into the straight segment 471, the greater the elastic force of the elastic member 44. That is, the greater the relative misalignment between the first planetary gear 41 and the second planetary gear 42, the greater the elastic force of the elastic member 44. Therefore, this method allows the planetary gears and the sun gear to maintain meshing in a smoother manner.

[0049] Furthermore, in the embodiments of this application, the surface where the mating part 46 contacts the elastic member 44 is a plane.

[0050] Specifically, by setting the surface of the elastic member 44 in contact with the mating part 46 to be a plane, the elastic force of the elastic member 44 can be transmitted to the mating part 46 more evenly.

[0051] Furthermore, in the embodiments of this application, a combination of multiple elastic members 44 and mating parts 46 is provided between the first planetary gear 41 and the second planetary gear 42.

[0052] Specifically, a combination of multiple elastic components 44 and mating parts 46 can be provided in the first planetary gear 41 and the second planetary gear 42 to better increase the elastic force between them and greatly reduce the gear gap.

[0053] Furthermore, in embodiments of this application, the combination of multiple elastic components 44 and mating portions 46 is evenly distributed along the circumference of the first planetary gear 41 and the second planetary gear 42.

[0054] Furthermore, in the embodiments of this application, the number of teeth on the outer teeth of the planetary gear 4 is greater than the number of teeth on the outer teeth of the sun gear 3, and the number of teeth on the inner teeth of the inner gear ring 2 is greater than the number of teeth on the outer teeth of the planetary gear 4.

[0055] Specifically, by designing the number of teeth on the outer teeth of the planetary gear 4 to be greater than the number of teeth on the outer teeth of the sun gear 3 that meshes with it, and by matching the corresponding motor power according to different gear reduction ratios, when the power is transmitted from the power-assist motor 7 to the sun gear 3, the software is adjusted to provide variable assistance, which can achieve the effect of speed reduction and torque increase, thereby enabling the driver to steer effectively.

[0056] Furthermore, in the embodiments of this application, the first planetary gear 41 and the second planetary gear 42 are arranged in close contact along the axial direction.

[0057] Specifically, the first planetary gear 41 and the second planetary gear 42 mesh with the internal gear ring 2 and the sun gear 3. In this embodiment, the first planetary gear 41 and the second planetary gear 42 are fitted together, so that the combination of the elastic member 44 and the mating part 46 is hidden between the two planetary gears.

[0058] Furthermore, in the embodiments of this application, the internal teeth of the internal gear ring 2, the external teeth of the sun gear 3, and the external teeth of the planet gear 4 are all oblique tooth structures.

[0059] Specifically, existing planetary gears 4 mostly adopt a spur gear structure, resulting in an insufficiently compact spatial arrangement of the reduction mechanism 1. In this application, the internal gear ring 2, planetary gears 4, and sun gear 3 are interconnected by helical gear meshing to achieve torque transmission, thereby reducing the operating noise of the power assist motor 7 and making the entire reduction mechanism 1 more compact in space, which is beneficial for the arrangement of other modules.

[0060] Furthermore, in the embodiments of this application, the sun gear 3 includes: a first gear 31; and a central shaft 32, one end of the central shaft 32 is mounted on the first gear 31, and the other end of the central shaft 32 is connected to the power output end of the power assist motor 7.

[0061] Specifically, in combination Figure 1 and Figure 2 It is known that the steering column feel simulator also includes a mounting base 11, and the power assist motor 7 is mounted on the mounting base 11. In this embodiment, the central shaft 32 on the sun gear 3 is connected to the output shaft of the power assist motor 7. The connected end corresponds to the reduction input end 5 of the reduction mechanism 1, which is used to drive the sun gear 3 to rotate through the power of the power assist motor 7.

[0062] In one embodiment of this application, when installing the assist motor 7 and the upper column assembly 10, the assist motor 7 is installed on the mounting base 11, and the upper column assembly 10 is installed on the upper surface of the reduction mechanism 1, thereby realizing the installation of the reduction mechanism 1 between the upper column assembly 10 and the assist motor 7.

[0063] Furthermore, in an embodiment of this application, the planetary gear 4 further includes a pin 43, which is movably mounted at the center of the first planetary gear 41 and the second planetary gear 42.

[0064] Specifically, in this embodiment, the planetary gears 4 mesh with the first gear 31 of the sun gear 3, and simultaneously, the planetary gears 4 also mesh with the internal teeth of the internal gear ring 2. Thus, when the first gear 31 rotates, the power is transmitted to the planetary gears 4, which, while rotating on their own axes, revolve around the axis of the first gear 31. Simultaneously, during their revolution, the planetary gears 4 transmit the reduced power output from their pivot pins 43, corresponding to the rotation center, to the upper column assembly 10 via the reduction output end 6.

[0065] Furthermore, in the embodiments of this application, the pin 43 is connected to the rotating disk 81, thereby driving the rotating shaft 83 located on the other side of the rotating disk 81 to rotate. The side of the rotating shaft 83 away from the rotating disk 81 is connected to the input shaft 82, and thus simultaneously rotates the input shaft 82.

[0066] When the reduction mechanism 1 transmits power through the power-assisting motor 7, it inputs power to the sun gear 3 through the reduction input end 5 to make the sun gear 3 rotate. When the sun gear 3 rotates, it drives the planet gear 4 that meshes with it to rotate. At the same time, the planet gear 4 meshes with the internal teeth on the internal gear ring 2, causing the planet gear 4 to rotate around the center of the sun gear 3. The power of the planet gear 4 rotating around the sun gear 3 is then used as the power of the reduction output end 6 to drive the rotating disk 81 to rotate.

[0067] like Figure 2 and 8As shown, in one embodiment of this application, during the installation of the rotating shaft 8, the rotating disk 81 is connected to each set of pins 43 to ensure that the central axis of the first gear 31 coincides with or is parallel to the central axis of the input shaft 82, thereby realizing the power of the planetary gear 4 through the connection between the pins 43 and the rotating disk 81, so as to realize the power output to the rotating shaft shaft 83 and the input shaft 82.

[0068] Furthermore, during the installation of the rotating disk 81, it is located between the inner wall of the second housing 103 and the reduction mechanism 1.

[0069] A steering column feel simulator includes the aforementioned reduction mechanism 1 with a planetary gear backlash elimination structure.

[0070] like Figure 1-2 As shown, control device 9 is a hand-feel simulation controller. The steering signals include road feel signals recognized by the steering gear and driver hand force change sensing signals corresponding to the steering wheel. Please refer to... Figure 1 In the given embodiment, both the power assist motor 7 and the upper column housing 101 are mounted on the mounting base 11. Furthermore, the reduction mechanism 1 is installed inside the upper column housing 101 located on one side of the power assist motor 7. By installing the upper column housing 101 at the end of the power assist motor 7, the reduction mechanism 1 is integrated between the upper column housing 101 and the power assist motor 7. Simultaneously, when outputting power, the power from the power assist motor 7 is directly output to the reduction input end 5. After being reduced in speed and increased in torque by the reduction mechanism 1, the power is further output to the reduction output end 6, and then the power to the upper column assembly 10 is further achieved through the reduction output end 6.

[0071] like Figure 2 As shown, in one embodiment of this application, during the process of receiving power from the deceleration output end 6 and transmitting it to the steering wheel, the upper column assembly 10 outputs power to the rotating shaft 8 installed in the upper column housing 101 through the deceleration output end 6 (i.e., the revolution of the pin 43 around the center of the first gear 31), and then outputs the power to the input shaft 82 through the rotating shaft 82, and further outputs the power to the steering wheel of the car through the input shaft 82. The upper column housing 101 includes: a first housing 102, which is correspondingly fitted with the rotating shaft 8; and a second housing 103, which is installed at one end of the first housing 102, and the internal gear ring 2 is installed inside the second housing 103. In one embodiment of this application, when installing the rotating shaft 8 and the deceleration mechanism 1, the upper column housing 101 uses the first housing 102 to achieve the limiting installation of the rotating shaft 8, and uses the second housing 103 to achieve the installation of the internal gear ring 2, so that the end of the second housing 103 can be connected to the end of the power assist motor 7 for assembly and installation.

[0072] See Figure 2In the illustrated embodiment, during simulator installation, the power assist motor 7 is installed sequentially via control device 9, the reduction mechanism 1 is installed at one end of the upper column housing 101, and the power assist motor 7 is installed at the other end via the upper column housing 101. This ensures that the power from the power assist motor 7 is transmitted to the reduction input end 5, then reduced by the reduction mechanism 1, and output to the rotary shaft 8 via the reduction output end 6. The rotary shaft 8 then outputs the power to the input shaft 82, which in turn provides auxiliary power to the steering wheel.

[0073] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this application and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this application should be included within the protection scope of this application. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A speed reduction mechanism, characterized in that, include: Internal gear ring (2); A sun gear (3) is movably mounted at the center of the internal gear ring (2), and the sun gear (3) is used to correspond to the reduction input end (5); Planetary gears (4), a plurality of said planetary gears (4) are disposed in the internal gear ring (2), the external teeth of said planetary gears (4) respectively mesh with the internal teeth of the internal gear ring (2) and the external teeth of said sun gear (3), and said planetary gears (4) are used to correspond to the reduction output end (6); Among them, at least one of the planetary gears (4) includes a first planetary gear (41) and a second planetary gear (42) with the same gear parameters, and the first planetary gear (41) and the second planetary gear (42) are connected to each other by an elastic member (44) and a mating part (46); One of the elastic member (44) and the mating part (46) is disposed on the first planetary gear (41), and the other of the elastic member (44) and the mating part (46) is disposed on the second planetary gear (42).

2. The speed reduction mechanism according to claim 1, characterized in that, The first planetary gear (41) is provided with a groove (47) for accommodating the elastic member (44), and the groove (47) also accommodates the mating part (46) that is configured to cooperate with the elastic member (44). The second planetary gear (42) is provided with the mating part (46) that cooperates with the elastic member (44). And / or, The second planetary gear (42) is provided with a groove (47) for accommodating the elastic member (44), and the groove (47) also accommodates the mating part (46) that is configured to cooperate with the elastic member (44). The first planetary gear (41) is provided with the mating part (46) that cooperates with the elastic member (44).

3. The speed reduction mechanism according to claim 2, characterized in that, The groove (47) includes a straight section (471) and an annular groove section (472); the straight section (471) is used to accommodate the elastic member (44), and the annular groove section (472) is used to accommodate the mating part (46); the mating part (46) can slide along the annular groove section (472).

4. The speed reduction mechanism according to claim 3, characterized in that, One end of the elastic member (44) abuts against the end face of the straight segment (471) of the groove (47) away from the annular groove segment (472), and the other end abuts against the connection between the straight segment (471) and the annular groove segment (472).

5. The speed reduction mechanism according to claim 4, characterized in that, The length of the straight segment (471) of the groove (47) is the same as the length of the elastic member (44) in its natural state; the mating part (46) can slide into the straight segment (471) along the annular groove segment (472) to compress the elastic member (44).

6. The speed reduction mechanism according to claim 1, characterized in that, The surface in contact between the mating part (46) and the elastic component (44) is a plane.

7. The speed reduction mechanism according to any one of claims 1-6, characterized in that, A plurality of elastic components (44) and mating parts (46) are provided between the first planetary gear (41) and the second planetary gear (42).

8. The speed reduction mechanism according to claim 1, characterized in that, The first planetary gear (41) and the second planetary gear (42) are arranged in close contact along the axial direction.

9. The speed reduction mechanism according to claim 1, characterized in that, The internal teeth of the internal gear ring (2), the external teeth of the sun gear (3), and the external teeth of the planet gear (4) are all helical teeth.

10. A steering column feel simulator, characterized in that, Includes the deceleration mechanism (1) as described in any one of claims 1-9.

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