Steering gear motor vibration eliminating mechanism and vehicle with same

Abstract

The utility model discloses a steering gear motor vibration eliminating mechanism and a vehicle with the steering gear motor vibration eliminating mechanism, and relates to the field of automobile parts. The steering gear motor vibration eliminating mechanism is used for being installed between a steering gear shell and a power assisting motor and comprises a supporting frame and a connecting device, one end of the supporting frame is used for abutting against the power assisting motor, and the connecting device is used for fixing the supporting frame to the steering gear shell. The integral rigidity mode of the steering gear can be improved, vibration generated in the high-speed operation process of the power-assisted motor can be reduced, vibration can be effectively absorbed, in addition, the steering gear can be suitable for various product types, and is simple in structure, convenient to assemble and low in manufacturing cost.

Description

Technical Field

[0001] The utility model relates to the field of automobile parts, in particular to a steering motor vibration elimination mechanism and a vehicle with the same. Background Art

[0002] Currently, commonly used dual-pinion electric power steering systems typically use a worm gear mechanism to reduce speed and increase torque. This mechanism primarily consists of a power-assisting motor, a worm connected to the motor's power output, and a worm wheel meshing with the worm. When the power-assisting motor operates at high speeds or when the vehicle is traveling on bumpy roads, it can vibrate. This vibration can even be transmitted through the steering gear input shaft to the driver's steering wheel, causing complaints from the driver. Utility Model Content

[0003] In view of this, the utility model provides a steering gear motor vibration elimination mechanism and a vehicle having the same, which can improve the overall stiffness mode of the steering gear and reduce the vibration generated during the high-speed operation of the power-assisted motor.

[0004] The utility model provides a steering gear motor vibration elimination mechanism, which is used to be installed between the steering gear housing and the power-assisted motor, and includes a support frame and a connecting device. One end of the support frame is used to abut against the power-assisted motor, and the connecting device is used to fix the support frame to the steering gear housing.

[0005] Furthermore, it also includes an elastic member, which is installed at one end of the support frame away from the connecting device, and the support frame abuts against the power-assisted motor through the elastic member.

[0006] Furthermore, the connecting device includes an adjusting nut, one end of the adjusting nut is threadedly connected to the support frame, and the other end of the adjusting nut is used to be mounted on the steering gear housing.

[0007] Furthermore, the connecting device includes a mounting portion, the mounting portion is provided with a snap-fit ​​groove, and the other end of the adjusting nut is snapped into the snap-fit ​​groove.

[0008] Furthermore, the mounting portion is provided on the steering gear housing, the length direction of the mounting portion is perpendicular to the steering gear housing, and the width direction of the mounting portion is parallel to the length direction of the power assist motor, and the snap-in groove extends along the length direction of the mounting portion.

[0009] Furthermore, the mounting portion includes a main body and an extension portion, the width direction of the main body is parallel to the length direction of the power-assisting motor, the extension portion extends from both sides of the width direction of the main body toward the direction close to the adjusting nut, and the extension portion is provided with an inward extending flange at one end away from the main body, and the snap-in groove is formed between the main body, the extension portion, and the flange.

[0010] Furthermore, the thickness of the portion of the adjusting nut that is engaged in the engaging groove is greater than the height of the engaging groove.

[0011] Furthermore, the adjusting nut includes a disc-shaped portion and a column-shaped portion, the disc-shaped portion is arranged at the bottom end of the column-shaped portion, the disc-shaped portion is snapped into the snap-fitting groove, and the column-shaped portion is screwed to the support frame.

[0012] Furthermore, the support frame includes a first support frame and a second support frame, the first support frame being a columnar structure with a threaded structure on its outer periphery, and the second support frame being an arc-shaped structure, the curvature of the arc-shaped structure being equivalent to the curvature of the outer surface of the power-assisted motor. The present utility model also provides a vehicle including a steering gear, the steering gear being provided with the steering gear motor vibration elimination mechanism as described above.

[0013] Compared with the existing technology, the present invention has the following beneficial technical effects:

[0014] The present invention provides a steering motor vibration elimination mechanism and a vehicle equipped with the same. A support frame and an adjusting nut are provided between the power-assist motor and the steering housing. One end of the support frame abuts the power-assist motor and the other end is threadedly connected to the adjusting nut. The adjusting nut is mounted on a mounting portion of the steering housing and is engaged with the mounting portion. The support frame and the adjusting nut can tighten the power-assist motor and the steering housing, and can act as a support beam between the power-assist motor and the steering housing. Therefore, the stability of the power-assist motor and the overall stiffness modal of the steering are improved, and the vibration caused by the power-assist motor during high-speed operation or when the vehicle is driving on bumpy roads is reduced. The adjusting nut can adjust the length of the entire vibration elimination mechanism, so it can be adapted to various product types. In addition, an elastic member is provided between the support frame and the power-assist motor. The elasticity of the elastic member can effectively absorb the vibration generated during the operation of the power-assist motor, thereby preventing the vibration from being transmitted to the driver's steering wheel through the steering input shaft, thereby causing complaints from the driver. In short, the present invention has a simple structure, is easy to assemble, and has a low manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of a steering gear motor vibration elimination mechanism provided by the utility model;

[0016] Figure 2This is a schematic structural diagram of the steering gear housing and the vibration elimination mechanism in the present invention;

[0017] Figure 3 It is a structural diagram of the adjusting nut, the supporting frame and the elastic member in the utility model.

[0018] Among them: 10-steering gear housing; 20-power-assisting motor; 31-support frame; 311-first support frame; 312-second support frame; 3121-first arcuate surface; 3122-second arcuate surface; 32-connecting device; 321-adjusting nut; 321a-disc-shaped portion; 321b-columnar portion; 322-mounting portion; 322a-main body; 322b-extension portion; 322c-flanged edge; 323-clamping groove; 33-elastic member; 40-steering gear input shaft. DETAILED DESCRIPTION

[0019] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0020] In the description of the present invention, it should be noted that the orientation or position relationship indicated in the description is based on the orientation or position relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the parts or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] See also Figure 1 The utility model provides a steering motor vibration elimination mechanism for installation between the steering housing 10 and the power-boosting motor 20. A gear shaft is installed inside the steering housing 10, and the power-boosting motor 20 is installed outside the steering housing 10, and the axis of the power-boosting motor 20 is parallel to the axis of the steering housing 10. The output end of the power-boosting motor 20 is connected to the worm in the power-steering mechanism. The worm is engaged with the worm wheel, which can drive the worm wheel to rotate. The worm wheel can drive the intermediate gear coaxial with it to rotate. The intermediate gear is engaged with the rack of the gear shaft, which can push the rack to move left and right, thereby achieving steering assistance. Since there is a gap between the power-boosting motor 20 and the steering housing 10 after installation, it is not stable. Therefore, when the power-boosting motor 20 runs at high speed or when the vehicle is driving on a bumpy road, the power-boosting motor 20 will vibrate, and the vibration will even be transmitted to the driver's steering wheel through the steering input shaft 40, causing complaints from the driver.

[0022] For this reason, Figure 2 and Figure 3As shown, the present invention provides a steering gear motor vibration elimination mechanism between the power-boosting motor 20 and the steering gear housing 10. The mechanism includes a support frame 31 and a connecting device 32. One end of the support frame 31 is used to abut the power-boosting motor 20, and the connecting device 32 is used to secure the support frame 31 to the steering gear housing 10. The support frame 31 and the connecting device 32 can press the power-boosting motor 20 and the steering gear housing 10 together, acting as a support beam between the power-boosting motor 20 and the steering gear housing 10. Therefore, the stability of the power-boosting motor 20 can be improved, thereby improving the overall stiffness modal of the steering gear and reducing vibration caused by the power-boosting motor 20 running at high speed or when the vehicle is driving on bumpy roads.

[0023] Furthermore, the connecting device 32 includes an adjusting nut 321, one end of which is threadedly connected to the support frame 31, and the other end of the adjusting nut 321 is used to be mounted on the steering gear housing 10. Because the adjusting nut 321 can adjust the length of the entire steering gear motor vibration elimination mechanism, the steering gear motor vibration elimination mechanism can be adapted to various product types.

[0024] Furthermore, the steering motor vibration elimination mechanism also includes an elastic member 33, which is mounted on the end of the support frame 31 facing the power-assisted motor 20. The support frame 31 elastically contacts the power-assisted motor 20 via the elastic member 33. The elastic member 33 is preferably a rubber pad. Since the contact surface with the power-assisted motor 20 is made of rubber, the rubber material can effectively absorb vibration generated during the operation of the power-assisted motor 20, preventing the vibration from being transmitted to the driver's steering wheel through the steering input shaft 40, which could cause driver complaints.

[0025] Furthermore, the connecting device 32 also includes a mounting portion 322, which is provided with a snap-fitting groove 323, and the other end of the adjusting nut 321 is snapped into the snap-fitting groove 323. Since the power-boosting motor 20 is mounted on the outside of the steering gear housing 10, and the axis of the power-boosting motor 20 is parallel to the axis of the steering gear housing 10, that is, the orthographic projection of the center point of the power-boosting motor 20 is not on the steering gear housing 10, the mounting portion 322 is provided on the outside of the steering gear housing 10. The length direction of the mounting portion 322 is perpendicular to the steering gear housing 10, and the width direction of the mounting portion 322 is parallel to the length direction of the power-boosting motor 20 (i.e., the axial direction of the steering gear housing 10 and the power-boosting motor 20). The adjusting nut 321 is snapped into the snap-fitting groove 323 of the mounting portion 322. By setting the mounting portion 322 and the mounting position of the power-boosting motor 20, the support frame 31 can abut against the middle part of the power-boosting motor 20 in the length direction of the power-boosting motor 20, so that the support frame 31 and the adjusting nut 321 can play a good role as a supporting beam between the power-boosting motor 20 and the steering gear housing 10, thereby improving the overall stiffness mode of the steering gear and reducing the vibration caused by the power-boosting motor 20 during high-speed operation or when the vehicle is driving on bumpy roads.

[0026] Specifically, the mounting portion 322 includes a main portion 322a and an extension portion 322b. The width of the main portion 322a is parallel to the length of the power-assisted motor 20. The extension portion 322b extends from both sides of the width of the main portion 322a toward the adjustment nut 321. An inwardly extending flange 322c is provided at one end of the extension portion 322b away from the main portion 322a. A snap-fit ​​groove 323 is formed between the main portion 322a, the extension portion 322b, and the flange 322c. The thickness of the portion of the adjustment nut 321 that engages in the snap-fit ​​groove 323 is greater than the height of the snap-fit ​​groove 323, so that the adjustment nut 321 can be securely engaged in the snap-fit ​​groove 323.

[0027] Furthermore, the adjusting nut 321 includes a disc-shaped portion 321a and a column-shaped portion 321b. The disc-shaped portion 321a is disposed at the bottom end of the column-shaped portion 321b. Both sides of the disc-shaped portion 321a engage within the engaging groove 323. The column-shaped portion 321b includes a threaded hole through which the column-shaped portion 321b is threadedly connected to the support frame 31. The thickness of the disc-shaped portion 321a is slightly greater than the height of the engaging groove 323, thereby creating an interference fit between the disc-shaped portion 321a and the engaging groove 323, thereby preventing the adjusting nut 321 from falling off the mounting portion 322. During installation, the adjusting nut 321 is first threadedly connected to the support frame 31. The disc-shaped portion 321a of the adjusting nut 321 is then aligned with the engaging groove 323 on the mounting portion 322. The adjusting nut 321 is then pressed into the engaging groove 323 from the end of the mounting portion 322 away from the steering gear housing 10, thereby engaging with the engaging groove 323. If the screw connection position of the support frame 31 and the adjusting nut 321 does not meet the distance requirement between the power-assisting motor 20 and the mounting portion 322, the adjusting nut 321 can be pulled out of the clamping groove 323 and the screw connection degree of the support frame 31 and the adjusting nut 321 can be readjusted. The structure is simple and the operation is convenient.

[0028] See also Figure 3 The support frame 31 includes a first support frame 311 and a second support frame 312. One end of the first support frame 311 is threadedly connected to the adjustment nut 321, and the other end of the first support frame 311 is connected to the middle of the second support frame 312, so that the second support frame 312 is evenly stressed. Specifically, the first support frame 311 is a columnar structure with a threaded structure on its outer periphery for threaded connection with the threaded hole in the columnar portion 321b of the adjustment nut 321. The second support frame 312 is an arc-shaped structure with a curvature comparable to that of the outer surface of the power-assisted motor 20, allowing it to fit closely to the power-assisted motor 20 and increase the vibration absorption area.

[0029] Furthermore, the second support frame 312 includes a first curved surface 3121 and a second curved surface 3122. The first curved surface 3121 faces the power-assisted motor 20, while the second curved surface 3122 faces away from the power-assisted motor 20. The first support frame 311 is connected to the second curved surface 3122, and the elastic member 33 is mounted on the first curved surface 3121. The second support frame 312 not only functions as a support arm, but also absorbs vibrations generated by the power-assisted motor 20 through the elastic member 33.

[0030] From the above description, it can be known that the utility model provides a steering motor vibration elimination mechanism, in which a support frame 31 and an adjusting nut 321 are set between the power-assisted motor 20 and the steering gear housing 10. One end of the support frame 31 is in contact with the power-assisted motor 20, and the other end is screwed with the adjusting nut 321. The adjusting nut 321 is installed on the mounting portion 322 of the steering gear housing 10 and is clamped with the mounting portion 322. The support frame 31 and the adjusting nut 321 can tighten the power-assisted motor 20 and the steering gear housing 10, and can act as a support beam between the power-assisted motor 20 and the steering gear housing 10. Therefore, This can improve the stability of the power-assist motor 20, increase the overall stiffness modal of the steering gear, and reduce the vibration caused by the power-assist motor 20 during high-speed operation or when the vehicle is driving on bumpy roads. The adjusting nut 321 can adjust the length of the entire steering motor vibration elimination mechanism, so it can be adapted to various product types. In addition, an elastic member 33 is provided between the support frame 31 and the power-assist motor 20. The elasticity of the material of the elastic member 33 can effectively absorb the vibration generated during the operation of the power-assist motor 20, preventing the vibration from being transmitted to the driver's steering wheel through the steering gear input shaft 40, thereby causing complaints from the driver. In short, the utility model has a simple structure, is easy to assemble, and has a low manufacturing cost.

[0031] The present invention also provides a vehicle including a steering gear, on which the steering gear motor vibration elimination mechanism as described above is provided. For other technical features of the steering gear and the vehicle, please refer to the prior art and will not be described in detail here.

[0032] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of the above-disclosed technical contents without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A steering gear motor vibration elimination mechanism, used to be installed between a steering gear housing (10) and a power-assisted motor (20), characterized in that: It comprises a support frame (31) and a connecting device (32), wherein one end of the support frame (31) is used to abut against the power-assisting motor (20), and the connecting device (32) is used to fix the support frame (31) to the steering gear housing (10).

2. The steering gear motor vibration elimination mechanism according to claim 1, characterized in that: It also includes an elastic member (33), which is mounted on one end of the support frame (31) away from the connecting device (32), and the support frame (31) is in contact with the power-assisting motor (20) through the elastic member (33).

3. The steering gear motor vibration elimination mechanism according to claim 1, characterized in that: The connecting device (32) comprises an adjusting nut (321), one end of the adjusting nut (321) is threadedly connected to the support frame (31), and the other end of the adjusting nut (321) is used for being mounted on the steering gear housing (10).

4. The steering motor vibration elimination mechanism according to claim 3, characterized in that: The connecting device (32) comprises a mounting portion (322), the mounting portion (322) being provided with a snap-fitting groove (323), and the other end of the adjusting nut (321) being snap-fitted into the snap-fitting groove (323).

5. The steering gear motor vibration elimination mechanism according to claim 4, characterized in that: The mounting portion (322) is provided on the steering gear housing (10), the length direction of the mounting portion (322) is perpendicular to the steering gear housing (10), and the width direction of the mounting portion (322) is parallel to the length direction of the power assist motor (20), and the engaging groove (323) extends along the length direction of the mounting portion (322).

6. The steering gear motor vibration elimination mechanism according to claim 4, characterized in that: The mounting portion (322) includes a main body (322a) and an extension portion (322b), wherein the width direction of the main body (322a) is parallel to the length direction of the power-assisting motor (20), and the extension portion (322b) extends from both sides of the width direction of the main body (322a) toward the direction close to the adjusting nut (321), and an inwardly extending flange (322c) is provided at one end of the extension portion (322b) away from the main body (322a), and the engaging groove (323) is formed between the main body (322a), the extension portion (322b), and the flange (322c).

7. The steering gear motor vibration elimination mechanism according to claim 4, characterized in that: The thickness of the portion of the adjusting nut (321) that is locked in the locking groove (323) is greater than the height of the locking groove (323).

8. The steering gear motor vibration elimination mechanism according to claim 4, characterized in that: The adjusting nut (321) comprises a disc-shaped portion (321a) and a column-shaped portion (321b), wherein the disc-shaped portion (321a) is arranged at the bottom end of the column-shaped portion (321b), the disc-shaped portion (321a) is snapped into the snap-fitting groove (323), and the column-shaped portion (321b) is screwed to the support frame (31).

9. The steering gear motor vibration elimination mechanism according to claim 4, characterized in that: The support frame (31) comprises a first support frame (311) and a second support frame (312); the first support frame (311) is a columnar structure with a threaded structure provided on the outer periphery; the second support frame (312) is an arc-shaped structure, and the curvature of the arc-shaped structure is equivalent to the curvature of the outer surface of the power-assisted motor (20).

10. A vehicle comprising a steering gear, characterized in that: The steering gear is provided with a steering gear motor vibration elimination mechanism as described in any one of claims 1 to 9.

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