CN207089407U - A kind of new automobile electric power-assisted steering apparatus worm bearing fixed structure - Google Patents
A kind of new automobile electric power-assisted steering apparatus worm bearing fixed structure Download PDFInfo
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- CN207089407U CN207089407U CN201720731687.5U CN201720731687U CN207089407U CN 207089407 U CN207089407 U CN 207089407U CN 201720731687 U CN201720731687 U CN 201720731687U CN 207089407 U CN207089407 U CN 207089407U
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- bearing
- rolling bearing
- endoporus
- main casing
- worm
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Abstract
The utility model discloses a kind of new automobile electric power-assisted steering apparatus worm bearing fixed structure, including main casing and worm screw, one end of worm screw is pressed with rolling bearing and shaft coupling, the main casing is provided with the endoporus for being used for being embedded in the rolling bearing in the opening position close to surface, the size of endoporus and the crest clearance of the rolling bearing coordinate, the depth of endoporus is less than the thickness of the rolling bearing, the end face outside of endoporus is provided with the bearing plate for being locked to main casing surface, the cycle surface of bearing plate and rolling bearing is adjacent to so that rolling bearing is defined in the endoporus.The utility model assembling mechanism is simple, easy to operate, just can be completed with torque spanner with conventional sleeve, without increasing special assembling equipment and frock, reduce cost；Bearing plate requirement on machining accuracy is low；Bearing plate can bear rolling bearing axially larger load after fixing, effectively prevent bearing axial movement and abjection；Improve the service life of rolling bearing.
Description
Technical field
It the utility model is related to the composition structure of automobile electric power steering (EPS) device, and in particular to a kind of motorcar electric power-assisted
Transfer worm bearing fixed structure.
Background technology
Reference picture 1, existing automobile electric power steering (EPS) device (EPS) worm bearing fixed mechanism are usually that will adjust spiral shell
Torque loads in main casing 1 ' bolt A on request, and bottom is bonded with the cycle surface of rolling bearing 2 ', is locked in regulating bolt A over-assembles
Tight nut B, by tightening locking nut B, fastening adjustment bolt A, makes rolling bearing 2 ' can not move in the axial direction.This assembling
Problems with point be present in mechanism：
1st, require that main casing brearing bore and mouth thread hole are concentric in mechanism, and it is vertical with brearing bore end face
Degree requires high, coordinates and to get well with the screw thread of regulating bolt, makes the increase of main casing difficulty of processing, improves processing cost.
2nd, there are the screw thread and locating slot of fastening in regulating bolt mechanism, its machining accuracy is higher, adds processing cost.
3rd, it is excessive to tighten the torque of regulating bolt, bearing outer ring can be deformed, causes Bearing inner gap to subtract too small,
Resistance increases during rotation, premature wear occurs and produces noise.
It is first fixed that the regulating bolt of torque is twisted when the 4th, assembling locking nut, then locking nut is tightened by torque requirement, its
Assembly tool mechanism is complex, need to make special equipment and frock is assembled.
Utility model content
For above technical problem, the utility model provide it is a kind of it is simple in construction, operation is easy to assembly, using effect is good
New automobile electric power-assisted steering apparatus worm bearing fixed structure.
A kind of new automobile electric power-assisted steering apparatus worm bearing fixed structure provided by the utility model, using
In electric power-assisted steering apparatus reducing gear, including main casing and the worm screw that is installed in main casing, one end press fitting of worm screw
There are rolling bearing and shaft coupling, it is characterised in that：The main casing is provided with described for being embedded in the opening position close to surface
The endoporus of rolling bearing, the size of endoporus and the crest clearance of the rolling bearing coordinate, and the depth of endoporus is less than the rolling
The thickness of bearing, the end face outside of endoporus are provided with the bearing plate for being locked to main casing surface, bearing plate and rolling bearing
Cycle surface is adjacent to so that rolling bearing is defined in the endoporus.
As preferred embodiment, the bearing plate is bolted to main casing worm bearing by two and the above
The end face in hole.
As preferred embodiment, the end face of the main casing worm shaft bearing bore matches provided with shape with bearing plate
Groove.
The utility model has compared with existing automobile electric power steering (EPS) device (EPS) worm bearing fixed mechanism
Advantages below：
1st, assembling mechanism is simple, easy to operate, just can be completed with torque spanner with conventional sleeve, special without increasing
Equipment and frock are assembled, reduces cost；
2nd, bearing plate requirement on machining accuracy is low, and using the processing mode of punching press, production efficiency is high, low manufacture cost；
3rd, bearing plate can bear rolling bearing axially larger load after fixing, and effectively prevent bearing axial movement and de-
Go out；
4th, by controlling the value of interference fit between main casing brearing bore depth dimensions and rolling bearing thickness, to ensure
Bearing plate is adjacent to without being deformed with bearing outer ring end face, so as to improve the service life of rolling bearing.
Brief description of the drawings
Fig. 1 is the worm bearing fixed structure chart of prior art；
Fig. 2 is worm bearing fixed structure chart of the present utility model；
Fig. 3 is side view of the present utility model.
Label declaration：In Fig. 1：1 '-main casing, 2 '-rolling bearing, A- regulating bolts, B- locking nuts, Fig. 2 and Fig. 3
In：1- main casings, 2- rolling bearings, 3- worm screws, 4- shaft couplings, 5- endoporus, 6- bearing plates, 7- bolts, 8- grooves.
Embodiment
With reference to the accompanying drawings and the utility model will be further described in conjunction with the embodiments.
Reference picture 2 and Fig. 3, worm bearing fixed structure of the present utility model mainly include main casing 1, rolling bearing 2, snail
Bar 3, shaft coupling 4 etc..Worm screw 3 is threaded onto in main casing 1, and rolling bearing 2 and shaft coupling 4 are placed on one end of worm screw 3, wherein rolling
Dynamic bearing 2 is fixed on main casing 1, and shaft coupling 4 is placed on the outside of rolling bearing 2.
Main casing 1 is provided with the endoporus 5 for being used for being embedded in rolling bearing 2 in the opening position close to surface.The size of endoporus 5 and rolling
The external diameter of dynamic bearing 2 matches, and the depth of endoporus 5 is less than the thickness of rolling bearing 2.The outside of endoporus 5 is provided with and is locked to main casing
The bearing plate 6 on the surface of body 1, the cycle surface of bearing plate 6 and rolling bearing 2 are adjacent to so that rolling bearing 6 is defined in into endoporus 5
It is interior.The end face of bearing plate 6 is pressed at the outer ring outer face of rolling bearing 2, by the depth dimensions of endoporus 5 and the rolling that control main casing 1
Value of interference fit between dynamic bearing thickness, bearing outer ring inner face is pressed in endoporus, make rolling bearing 2 in the axial direction without
Method moves.
As described in Figure 3, bearing plate 6 is fixed to the end face of the worm shaft bearing bore of main casing 1 by two and above bolt 7.
In the present embodiment, the quantity of bolt 7 is two, in bearing plate both ends and Central Symmetry, the kludge of this fastening bolt
Structure, certain arm of force relation is formed between rolling bearing and bolt, when bearing plate it is spacing in main casing aperture end face when, two
The less screw-down torque of bolt can bear rolling bearing axially larger load, effectively prevent bearing axial movement and abjection.
In addition, in order to better control over the installation site of bearing plate 6, the end face of the worm shaft bearing bore of main casing 1 is provided with shape
The groove 8 that shape matches with bearing plate 6.The installation site of bearing plate 6 can be defined using this groove 8, bearing
Fixed effect is more accurate reliable.
Preferred embodiment of the present utility model is the foregoing is only, is not limited to the utility model, for this
For the technical staff in field, the utility model can have various modifications and variations.It is all in the spirit and principles of the utility model
Within, any modification, equivalent substitution and improvements made etc., it should be included within the scope of protection of the utility model.
Claims (3)
1. a kind of new automobile electric power-assisted steering apparatus worm bearing fixed structure, slows down using in electric power-assisted steering apparatus
In mechanism, including main casing and the worm screw that is installed in main casing, one end of worm screw are pressed with rolling bearing and shaft coupling,
It is characterized in that：The main casing is provided with the endoporus for being used for being embedded in the rolling bearing in the opening position close to surface, endoporus
Size and the crest clearance of the rolling bearing coordinate, and the depth of endoporus is less than the thickness of the rolling bearing, the outside of endoporus
End face, which is provided with, is locked to the bearing plate on main casing surface, and the cycle surface of bearing plate and rolling bearing is adjacent to by the axis of rolling
Hold and be defined in the endoporus.
2. a kind of new automobile electric power-assisted steering apparatus worm bearing fixed structure according to claim 1, its feature
It is：The bearing plate is bolted to the end face of main casing worm shaft bearing bore by two and the above.
3. a kind of new automobile electric power-assisted steering apparatus worm bearing fixed structure according to claim 1, its feature
It is：The end face of the main casing worm shaft bearing bore is provided with the groove that shape matches with bearing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720731687.5U CN207089407U (en) | 2017-06-22 | 2017-06-22 | A kind of new automobile electric power-assisted steering apparatus worm bearing fixed structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720731687.5U CN207089407U (en) | 2017-06-22 | 2017-06-22 | A kind of new automobile electric power-assisted steering apparatus worm bearing fixed structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207089407U true CN207089407U (en) | 2018-03-13 |
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ID=61553411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720731687.5U Active CN207089407U (en) | 2017-06-22 | 2017-06-22 | A kind of new automobile electric power-assisted steering apparatus worm bearing fixed structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207089407U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107336740A (en) * | 2017-06-22 | 2017-11-10 | 安徽德孚转向系统股份有限公司 | A kind of new automobile electric power-assisted steering apparatus worm bearing fixed structure |
-
2017
- 2017-06-22 CN CN201720731687.5U patent/CN207089407U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107336740A (en) * | 2017-06-22 | 2017-11-10 | 安徽德孚转向系统股份有限公司 | A kind of new automobile electric power-assisted steering apparatus worm bearing fixed structure |
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