CN208417412U - A kind of adjustable noise reducing mechanism of gap of worm - Google Patents
A kind of adjustable noise reducing mechanism of gap of worm Download PDFInfo
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- CN208417412U CN208417412U CN201821059208.0U CN201821059208U CN208417412U CN 208417412 U CN208417412 U CN 208417412U CN 201821059208 U CN201821059208 U CN 201821059208U CN 208417412 U CN208417412 U CN 208417412U
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- worm
- bearing retainer
- gap
- shell
- noise reducing
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Abstract
The utility model discloses a kind of adjustable noise reducing mechanisms of gap of worm, the intermeshing worm gear and worm screw are set in shell, it is arranged with bearing retainer on worm bearing one for fixing worm screw one end, the steel band spring for acting between bearing retainer and shell and moving along the radial direction of bearing retainer is provided on the outer wall of the bearing retainer.The gap of worm of the utility model is adjustable, and noise reducing mechanism adjusts the gap between worm gear and worm screw by the combination of steel band spring, bearing retainer and guide groove, impact of the commutation process middle (center) bearing retainer to shell is buffered by sealing ring simultaneously, to reduce commutation noise.
Description
Technical field
The utility model relates to electric power steering technical fields, and in particular to a kind of adjustable noise reduction machine of gap of worm
Structure.
Background technique
Electric boosting steering system (Electric Power Steering, abridge EPS) mainly includes steering mechanism, turns round
Square sensor and electronic control unit (ECU), wherein in steering mechanism worm gear mechanism be it is most common be used to transmit
The mechanism of power.
The advantages of Worm Wheel System, essentially consists in:
(1) large transmission ratio transmission: single machine transmission ratio i=7-80 can be achieved；In indexing mechanism or man-operated mechanism, transmission ratio
Up to 300.Due to that can realize that large transmission ratio is driven with less part, so worm-drive is compact compared with gear drive.
(2) stable drive: since worm screw is helical tooth, the engaged transmission of it and worm-gear toothing is equivalent to worm drive, simultaneously
The tooth of engagement is to more, so stable drive, noise are low.
Opposite, the shortcomings that Worm Wheel System, is the serious wear that its transmission efficiency is lower, occurs in transmission, this is
Because Worm Wheel System is meshing gear transmission, there is biggish relative sliding velocity between meshing gear, will lead to the mill of the flank of tooth
Damage, fever and energy consumption, wearing in the cooperation of rear worm wheel worm screw will appear gap, to the spaciousness in feel occur, be driven
In collision abnormal sound the problems such as.
Utility model content
In order to overcome due to the drawbacks of generating fit clearance after abrasion in Worm Wheel System, the utility model provides one
The kind adjustable noise reducing mechanism of gap of worm can compensate the wearing clearance generated in worm and gear cooperation automatically and be effectively reduced
Commutate noise.
The utility model overcomes the technical solution used by its technical problem to be:
A kind of adjustable noise reducing mechanism of gap of worm, the intermeshing worm gear and worm screw are set in shell,
It is particular in that, is arranged with bearing retainer on the worm bearing one for fixing worm screw one end, the bearing retainer
The steel band spring for acting between bearing retainer and shell and moving along the radial direction of bearing retainer is provided on outer wall.
The utility model is preferred, and the guide groove for keeping gap adjustment direction is provided in the inner walls.
The utility model is preferred, and the protrusion protruded towards guide groove is provided on the steel band spring.
The utility model is preferred, is additionally provided on the outer wall of the bearing retainer and acts on bearing retainer and shell
Between sealing ring, the sealing ring can play a buffer role in, and absorbs bearing retainer to the impact force of shell, changes to reduce
To noise.
The beneficial effects of the utility model are:
The gap of worm of the utility model is adjustable, and noise reducing mechanism passes through steel band spring, bearing retainer and guide groove
Combination buffers commutation process middle (center) bearing retainer to shell by sealing ring to adjust the gap between worm gear and worm screw
Impact, to reduce commutation noise.
Detailed description of the invention
Fig. 1 is the Worm and worm-wheel gearing section knot that the adjustable noise reducing mechanism in gap is equipped with described in the utility model embodiment
Structure schematic diagram.
Fig. 2 is the schematic cross-sectional view of the adjustable noise reducing mechanism of gap of worm described in the utility model embodiment.
In figure, 1- worm screw dustproof cover, 2- bearing retainer, 3- sealing ring, 4- steel band spring, 5- worm bearing one, 6- snail
Bar, 7- shell, 8- worm bearing two, 9- worm gear, 10- worm gear shaft, 11- guide groove.
Specific embodiment
The utility model is better understood for the ease of those skilled in the art, in the following with reference to the drawings and specific embodiments to this reality
It is described in further details with novel, following be merely exemplary does not limit the protection scope of the utility model.
The utility model discloses a kind of adjustable noise reducing mechanisms of gap of worm, as shown in Figure 1, the worm and gear
In transmission mechanism, intermeshing worm gear 9 is set in shell 7 with worm screw 6, and the worm gear 9 is fitted in the outside of worm gear shaft 10,
Worm gear shaft 10 is assemblied in the inner cavity top of shell 7 by bearing, and the both ends of the worm screw 9 pass through worm bearing 1 and snail respectively
The press fitting of rod bearing 28 is intracavitary in the worm screw in shell 7, in addition, the sundries such as clast enter that worm screw is intracavitary in order to prevent, worm screw 9
Top is additionally provided with worm screw dustproof cover 1.
Gap of worm described in the present embodiment is adjustable, and noise reducing mechanism is, as illustrated in fig. 1 and 2, for fixing worm screw
It is arranged with bearing retainer 2 on the worm bearing 1 of one end, is provided on the outer wall of the bearing retainer 2 and acts on bearing
Between retainer 2 and shell 7 and along the steel band spring 4 that the radial direction of bearing retainer moves, the steel band spring 4 is fixed on
It is arranged in the groove at 2 middle part of bearing retainer, further, the steel band spring 4 is located at bearing retainer 2 backwards to worm gear
Side.
Further, the guide groove 11 for keeping gap adjustment direction, the steel band are provided on 7 inner wall of shell
The protrusion protruded towards guide groove 11 is provided on spring 4.
Further, it is additionally provided with and is acted between bearing retainer 2 and shell 7 on the outer wall of the bearing retainer 2
The sealing ring 3 worked as a buffer, the sealing ring 3 are installed in the groove that 2 top of bearing retainer is arranged in, the sealing ring
3 select O-ring seal.
The principle of the adjustable noise reducing mechanism of gap of worm described in the utility model is as follows:
When Vehicular turn, power-assisted is passed to worm gear 9 by worm screw 6 by motor, is set to bearing retainer 2 and shell 7
Between steel band spring 4 compress the outer ring of bearing retainer 2, and worm screw 6 is transmitted the force to by worm bearing 1, to adjust
Gap between whole worm gear 9 and worm screw 6.Meanwhile when vehicle starts to carry out to turn to commutation, worm gear 9 to worm screw 6 have one it is reversed
Power, which is greater than the elastic force of steel band spring 4, and when O-ring seal 3 and shell 7 contact, O-ring seal 3 plays buffering and makees
With, impact force of the absorption bearing retainer 2 to shell 7, the noise generated when to reducing commutation well.
Above only describes the basic principle of the utility model and preferred embodiment, those skilled in the art can be according to above-mentioned
Many changes and improvements are made in description, these changes and improvements should belong to the protection scope of the utility model.
Claims (4)
1. a kind of adjustable noise reducing mechanism of gap of worm, the intermeshing worm gear (9) and worm screw (6) are set to shell
(7) in, which is characterized in that be arranged with bearing retainer (2), the axis on the worm bearing one (5) for fixing worm screw one end
It holds to be provided on the outer wall of retainer (2) and act between bearing retainer (2) and shell (7) and along the radial direction of bearing retainer
The mobile steel band spring (4) in direction.
2. the adjustable noise reducing mechanism in gap according to claim 1, which is characterized in that be provided on shell (7) inner wall
For keeping the guide groove (11) in gap adjustment direction.
3. the adjustable noise reducing mechanism in gap according to claim 2, which is characterized in that be provided on the steel band spring (4)
Towards the protrusion of guide groove (11) protrusion.
4. the adjustable noise reducing mechanism in gap according to claim 1-3, which is characterized in that the bearing retainer
(2) sealing ring (3) acted between bearing retainer (2) and shell (7) is additionally provided on outer wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821059208.0U CN208417412U (en) | 2018-07-05 | 2018-07-05 | A kind of adjustable noise reducing mechanism of gap of worm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821059208.0U CN208417412U (en) | 2018-07-05 | 2018-07-05 | A kind of adjustable noise reducing mechanism of gap of worm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208417412U true CN208417412U (en) | 2019-01-22 |
Family
ID=65125460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821059208.0U Active CN208417412U (en) | 2018-07-05 | 2018-07-05 | A kind of adjustable noise reducing mechanism of gap of worm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208417412U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117595570A (en) * | 2024-01-18 | 2024-02-23 | 深圳市三利达电器科技有限公司 | Motor with shock attenuation noise reduction function |
-
2018
- 2018-07-05 CN CN201821059208.0U patent/CN208417412U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117595570A (en) * | 2024-01-18 | 2024-02-23 | 深圳市三利达电器科技有限公司 | Motor with shock attenuation noise reduction function |
| CN117595570B (en) * | 2024-01-18 | 2024-03-15 | 深圳市三利达电器科技有限公司 | Motor with shock attenuation noise reduction function |
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