CN212509366U - EPS is with attenuating wheel contrary excitation vibrations abnormal sound mechanism - Google Patents
EPS is with attenuating wheel contrary excitation vibrations abnormal sound mechanism Download PDFInfo
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- CN212509366U CN212509366U CN202021067049.6U CN202021067049U CN212509366U CN 212509366 U CN212509366 U CN 212509366U CN 202021067049 U CN202021067049 U CN 202021067049U CN 212509366 U CN212509366 U CN 212509366U
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Abstract
The utility model belongs to the technical field of the auto steering, concretely relates to EPS is with contrary excitation vibrations abnormal sound mechanism of attenuatable wheel, including the box, set up worm gear mechanism in the box, normal running fit owner support bearing between worm rear end among the worm gear mechanism and the box sets up interior clearance ring between main support bearing and the worm, sets up outer clearance ring between main support bearing and the box, and the worm rear end sets up first balanced ring and second balanced ring, and two balanced rings offset with main support bearing's front and back both ends respectively. The beneficial effects of the utility model reside in that: the structure is ingenious, and the noise source is produced by main tributary support bearing and worm, the clearance between main tributary support bearing and box and main tributary support bearing self internal clearance, and this embodiment is equivalent to all installing the bumper shock absorbers all around the main tributary support bearing through interior clearance ring, outer clearance ring, two balancing rings and axle card wedge, and the main tributary support bearing selects the negative internal clearance bearing for use, all eliminates several noise points.
Description
Technical Field
The utility model belongs to the technical field of the auto steering, concretely relates to but EPS is with decay wheel counterexcitation vibrations abnormal sound mechanism.
Background
The utility model provides a but car EPS is with decay wheel contrary excitation vibrations abnormal sound mechanism mainly has following problem to present EPS worm mechanism: in order to facilitate the disassembly and assembly, the upper bearing of the worm serving as the main support is in clearance fit with the mounting hole of the box body, and collision noise is generated during the work; the upper bearing of the worm is in clearance fit with the worm so as to conveniently adjust the meshing clearance between the worm and the worm wheel, but collision noise can be generated during working; the worm upper bearing adopts small play, but the radial play and the axial play of the worm upper bearing can still transmit reverse excitation from the wheel to the bearing to generate vibration abnormal sound.
SUMMERY OF THE UTILITY MODEL
In order to remedy the deficiency of the prior art, the utility model provides a but EPS is with technical scheme of decay wheel counterexcitation vibrations abnormal sound mechanism.
The attenuation wheel counter-excitation vibration abnormal sound mechanism for the EPS comprises a box body, a worm gear mechanism is arranged in the box body, a main supporting bearing is in running fit between the rear end of a worm in the worm gear mechanism and the box body, and is characterized in that an inner clearance ring is arranged between the main supporting bearing and the worm, an outer clearance ring is arranged between the main supporting bearing and the box body, a first balance ring and a second balance ring are arranged at the rear end of the worm, and the two balance rings are respectively abutted against the front end and the rear end of the main supporting bearing.
The EPS is with attenuating wheel contrary excitation vibrations abnormal sound mechanism, its characterized in that sets up the axle card wedge in the mounting hole of box, the axle card wedge offsets with the rear end of main support bearing, the front end of main support bearing offsets with the step of mounting hole.
The EPS is with attenuating wheel counterexcitation vibrations abnormal sound mechanism, set up first annular on the mounting hole of its characterized in that box, axle card wedge sets up in first annular.
The EPS-used damping wheel counterexcitation vibration abnormal sound mechanism is characterized in that one of a main support bearing and a worm is provided with a second annular groove, and an inner clearance ring is arranged in the second annular groove.
The EPS is with attenuating wheel counterexcitation vibrations abnormal sound mechanism, its characterized in that sets up the third annular on one of them mounting hole of main support bearing and box, the outer crack ring sets up in the third annular.
The EPS is with attenuating wheel counterexcitation vibrations abnormal sound mechanism, its characterized in that sets up the fourth annular that is used for installing main support bearing on the worm.
The attenuation wheel counter-excitation vibration abnormal sound mechanism for the EPS is characterized in that a fifth ring groove used for mounting a first balance ring is formed in the rear end of a worm, a tail sleeve is fixed to the rear end of the worm in a sleeved mode, and a sixth ring groove used for mounting a second balance ring is formed in the tail sleeve.
The mechanism capable of attenuating the wheel reverse excitation vibration abnormal sound for the EPS is characterized in that a main bearing is a negative clearance bearing.
Compared with the prior art, the utility model discloses following beneficial effect has: the structure is ingenious, the noise source is generated by the clearance between the main support bearing and the worm, the main support bearing and the box body and the self clearance of the main support bearing, the periphery of the main support bearing is equivalent to the situation that all shock absorbers are arranged through the inner clearance ring, the outer clearance ring, the two balance rings and the shaft clamping wedge, and the main support bearing adopts a negative clearance bearing to eliminate a plurality of noise points; in the embodiment, the function of adjusting the meshing clearance between the worm and the worm wheel is not sacrificed, and the embodiment keeps the fit clearance between the worm and the main support bearing hole, so that the worm can swing at a small angle in the bearing hole, and the clearance adjusting mechanism can work normally; this embodiment has kept original clearance design, has reduced the cooperation required precision to worm, mounting hole, and it is easier to process, and the quality is changeed and is guaranteed, convenient assembling.
Drawings
FIG. 1 is a schematic structural view of example 1;
FIG. 2 is an enlarged view of FIG. 1 at A;
FIG. 3 is a schematic structural view of example 2;
fig. 4 is an enlarged view of fig. 3 at B.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Example 1
As shown in fig. 1 and 2, the damping wheel counter-excitation vibration abnormal sound mechanism for the EPS comprises a box body 1, a worm gear mechanism is arranged in the box body 1, a main support bearing 3 is in running fit between the rear end of a worm 2 in the worm gear mechanism and the box body 1, an inner stop ring 4 is arranged between the main support bearing 3 and the worm 2, an outer stop ring 5 is arranged between the main support bearing 3 and the box body 1, a first balance ring 6 and a second balance ring 7 are arranged at the rear end of the worm 2, and the two balance rings are respectively abutted against the front end and the rear end of the main support bearing 3.
As the structural optimization of the present embodiment: an axle clamping wedge 8 is arranged in the mounting hole 100 of the box body 1, the axle clamping wedge 8 is abutted against the rear end of the main support bearing 3, and the front end of the main support bearing 3 is abutted against the step of the mounting hole 100.
In the above structure, the mounting hole 100 of the box body 1 is provided with a first ring groove 1000, and the shaft-locking wedge 8 is arranged in the first ring groove 1000. In specific implementation, the shaft clamping wedge 8 is made of metal materials, the rear end face of the shaft clamping wedge is a plane, the front end face of the shaft clamping wedge is an external conical surface, the first annular groove 1000 corresponds to the shaft clamping wedge 8 in shape, and the shaft clamping wedge 8 can be plugged into the mounting hole 100 through deformation.
As the structural optimization of the present embodiment: the worm 2 is provided with a second ring groove 10, and the inner check ring 4 is arranged in the second ring groove 10.
As the structural optimization of the present embodiment: the mounting hole 100 of the case 1 is provided with a third ring groove 11, and the outer clearance ring 5 is provided in the third ring groove 11.
As the structural optimization of the present embodiment: the worm 2 is provided with a fourth annular groove 202 for mounting the main support bearing 3.
As the structural optimization of the present embodiment: the rear end of the worm 2 is provided with a fifth ring groove 201 for mounting the first balancing ring 6, the rear end of the worm 2 is fixedly sleeved with a tail sleeve 9, and the tail sleeve 9 is provided with a sixth ring groove 900 for mounting the second balancing ring 7. In specific implementation, the tail sleeve 9 is made of a metal material and is in interference fit with the worm 2. The fifth ring groove 201 and the sixth ring groove 900 are the same in size, the inner diameters of the fifth ring groove 201 and the sixth ring groove are larger than the inner diameter of the fourth ring groove 202, and the three ring grooves are communicated in sequence.
As the structural optimization of the present embodiment: the main bearing 3 is a negative play bearing, and the negative play can eliminate the working noise inside the bearing.
In the structure, the inner clearance ring 4 is made of rubber or other elastic non-metallic materials and is used for eliminating the radial collision noise between the worm 2 and the main support bearing 3; the two balance rings are made of non-metallic materials and are used for eliminating axial collision noise between the main support bearing 3 and the worm 2; the outer clearance ring 5 is made of rubber or other elastic non-metallic materials and is used for eliminating radial collision noise between the main support bearing 3 and the box body 1; after the main support bearing 3 is placed in the mounting hole 100 of the box body 1, the shaft clamping wedge 8 is installed in the first annular groove 11 to eliminate the axial clearance of the main support bearing 3 in the mounting hole 100.
The working principle and the specific working mode of the embodiment are as follows:
according to the EPS abnormal sound mechanism capable of attenuating reverse excitation vibration of the wheels, when a vehicle runs on uneven road surfaces such as pebbles, excitation vibration can be generated, the vibration can finally reach the worm through the steering gear, the intermediate shaft and the worm wheel, vibration noise is generated between the worm and the main support bearing and between the worm and the box body due to assembly gaps, at the moment, radial noise and axial noise can be effectively eliminated through the inner clearance ring and the balance ring between the worm and the main support bearing, and radial noise and axial noise between the main support bearing and the box body can be effectively eliminated through the outer clearance ring and the shaft clamping wedge between the main support bearing and the box body.
The embodiment has the following advantages:
1) the structure is ingenious, the noise source is generated by the clearance between the main support bearing and the worm, the main support bearing and the box body and the self clearance of the main support bearing, the periphery of the main support bearing is equivalent to the situation that all shock absorbers are arranged through the inner clearance ring, the outer clearance ring, the two balance rings and the shaft clamping wedge, and the main support bearing adopts a negative clearance bearing to eliminate a plurality of noise points;
2) in the embodiment, the function of adjusting the meshing clearance between the worm and the worm wheel is not sacrificed, and the embodiment keeps the fit clearance between the worm and the main support bearing hole, so that the worm can swing at a small angle in the bearing hole, and the clearance adjusting mechanism can work normally;
3) this embodiment has kept original clearance design, has reduced the cooperation required precision to worm, mounting hole, and it is easier to process, and the quality is changeed and is guaranteed, convenient assembling.
Example 2
As shown in fig. 3 and 4, the embodiment 2 is modified based on the embodiment 1 as follows: the second ring groove 10 of embodiment 2 is provided on the inner ring wall of the main support bearing 3, the third ring groove 11 of embodiment 2 is provided on the outer ring wall of the main support bearing 3, and accordingly, the inner and outer check rings 4 and 5 are provided on the main support bearing 3 through the second and third ring grooves 10 and 11.
The working principle and the specific working mode of the embodiment 2 are the same as those of the embodiment 1, and the related description of the embodiment 1 can be specifically referred.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. The utility model provides a but EPS is with decay wheel counterexcitation vibrations abnormal sound mechanism, includes box (1), sets up worm gear mechanism in box (1), normal running fit main support bearing (3) between worm (2) rear end among the worm gear mechanism and box (1), its characterized in that sets up between main support bearing (3) and worm (2) interior clearance ring (4), sets up outer clearance ring (5) between main support bearing (3) and box (1), worm (2) rear end sets up first balance ring (6) and second balance ring (7), two balance rings offset with the front and back both ends of main support bearing (3) respectively.
2. The mechanism capable of attenuating the wheel counterexcitation vibration abnormal sound for the EPS according to claim 1, characterized in that a shaft clamping wedge (8) is arranged in the mounting hole (100) of the box body (1), the shaft clamping wedge (8) abuts against the rear end of the main support bearing (3), and the front end of the main support bearing (3) abuts against the step of the mounting hole (100).
3. The mechanism capable of attenuating the wheel counterexcitation vibration abnormal sound for the EPS according to claim 2, characterized in that the mounting hole (100) of the box body (1) is provided with a first ring groove (1000), and the axle wedge (8) is arranged on the first ring groove (1000).
4. A damped wheel counter-excitation shock and abnormal noise mechanism for EPS according to any one of claims 1-3, characterized in that a second annular groove (10) is provided in one of the main support bearing (3) and the worm (2), and the inner anti-backlash ring (4) is provided in the second annular groove (10).
5. A wheel counter-excitation vibration and abnormal sound attenuating mechanism for EPS according to any one of claims 1 to 3, characterized in that a third ring groove (11) is provided in one of the mounting hole (100) of the main support bearing (3) and the housing (1), and the outer clearance ring (5) is provided in the third ring groove (11).
6. A damped wheel counter-excitation shock and abnormal noise mechanism for EPS according to any one of claims 1-3, characterized in that the worm (2) is provided with a fourth annular groove (202) for mounting the main support bearing (3).
7. A damped wheel counter-excitation vibration abnormal noise mechanism for EPS according to any one of claims 1-3, characterized in that the rear end of the worm (2) is provided with a fifth ring groove (201) for mounting the first balancing ring (6), the rear end of the worm (2) is fixedly sleeved with a tail sleeve (9), and the tail sleeve (9) is provided with a sixth ring groove (900) for mounting the second balancing ring (7).
8. A damping wheel counter-excitation shock squeak mechanism for EPS according to any one of claims 1-3, characterized in that the main support bearing (3) is a negative play bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021067049.6U CN212509366U (en) | 2020-06-11 | 2020-06-11 | EPS is with attenuating wheel contrary excitation vibrations abnormal sound mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021067049.6U CN212509366U (en) | 2020-06-11 | 2020-06-11 | EPS is with attenuating wheel contrary excitation vibrations abnormal sound mechanism |
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| Publication Number | Publication Date |
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| CN212509366U true CN212509366U (en) | 2021-02-09 |
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| CN202021067049.6U Active CN212509366U (en) | 2020-06-11 | 2020-06-11 | EPS is with attenuating wheel contrary excitation vibrations abnormal sound mechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114941693A (en) * | 2022-05-31 | 2022-08-26 | 浙江台玖精密机械有限公司 | High-precision worm gear speed reducer for medical push rod and assembling method |
-
2020
- 2020-06-11 CN CN202021067049.6U patent/CN212509366U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114941693A (en) * | 2022-05-31 | 2022-08-26 | 浙江台玖精密机械有限公司 | High-precision worm gear speed reducer for medical push rod and assembling method |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No.28 Xiangshan Road, Wenyan Town, Xiaoshan District, Hangzhou City, Zhejiang Province Patentee after: ZHEJIANG WANDA STEERING GEAR Co.,Ltd. Address before: No.28 Xiangshan Road, Wenyan Town, Xiaoshan District, Hangzhou City, Zhejiang Province Patentee before: ZHEJIANG WANDA STEERING GEAR CO.,LTD. |
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| CP01 | Change in the name or title of a patent holder |