CN202400145U - Steering column assembly for electric power steering system - Google Patents
Steering column assembly for electric power steering system Download PDFInfo
- Publication number
- CN202400145U CN202400145U CN2011205615752U CN201120561575U CN202400145U CN 202400145 U CN202400145 U CN 202400145U CN 2011205615752 U CN2011205615752 U CN 2011205615752U CN 201120561575 U CN201120561575 U CN 201120561575U CN 202400145 U CN202400145 U CN 202400145U
- Authority
- CN
- China
- Prior art keywords
- spacing hole
- shaft
- steel ball
- steering
- steering shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a steering column assembly for an electric power steering system. The steering column assembly comprises a steering shaft and an input shaft which is matched with a spline of the steering shaft; a limit hole is formed in the steering shaft in a radial direction; at least one end of the limit hole is provided with a steel ball; and a spring piece which pushes the steel ball to contact the inner wall of the steering shaft is arranged in the limit hole. According to the steering column assembly, the steering shaft is provided with the limit hole, and the steel ball and the spring piece are arranged in the limit hole, so that when small force is applied to the input shaft by the steering shaft, and the axial position of the input shaft is kept fixed by the steering shaft; when the large external force is applied to the steering shaft, the steel ball in the limit hole rolls on the inner wall of the input shaft; and therefore, a strong collapse function is exerted, and the steering column assembly meets the requirement of required collapse force. By the steering column assembly, the assembly gap between the input shaft and the steering shaft of a steering column can be eliminated, and the technical requirement of the steering column assembly on collapse force can be met.
Description
Technical field
The utility model belongs to automotive field, especially relates to a kind of column assy of electric boosting steering system.
Background technology
Steering column is the important component part of the steering control mechanism of automobile steering system, and it is bearing transmission chaufeur input direction dish direction information in the cruising process, and the wheel steering system work effect that input requires is provided.
Be connected reasonableness between the input shaft of electric boosting steering system (EPS) column assy and the steering shaft; In the working process of tubing string assembly, play important effect; The stability of its work, reliability and safety directly influence the overall performance and the laws and regulations requirement of total system.Be connected between the input shaft of past EPS electric power-assisted steering tubular column assembly and the steering shaft; The main mounting structures such as injecting glue, injection moulding that adopt; These two kinds of mounting structures all have defective and incomplete place separately; The injecting glue mounting structure is simple, cost is low but crumple power conformability is bad, is difficult to guarantee the technical requirements of column assy crumple power; Injection structure crumple power conformability is better; Can satisfy the technical requirements of assembling back right alignment between technical requirements and the input shaft and the steering shaft of column assy crumple power; But technology is comparatively complicated, and cost is higher relatively, and production efficiency is relatively low; Therefore develop and a kind ofly can satisfy the technical requirements of assembling back right alignment between input shaft and the steering shaft and the technical requirements of column assy crumple power; Can improve efficiency of assembling again, the new column assy that reduces production costs is very important.
Summary of the invention
It is a kind of simple in structure and can satisfy the column assy of electric boosting steering system of the technical requirements of column assy crumple power that the purpose of the utility model is to provide.
A kind of column assy of electric boosting steering system; Comprise steering shaft and with the input shaft of said steering shaft spline fitted; Have the spacing hole that radially is provided with on the said steering shaft; At least one end of spacing hole has a steel ball, is provided with in the spacing hole to push the spring installation that steel ball touches said steering shaft inwall.
Adopt the utility model; Steering shaft is connected through spline with input shaft; Guarantee that the steering shaft and the circumferential position of input shaft fix, spacing hole be set on steering shaft and steel ball and the effect of spring installation be located in the spacing hole are: when steering shaft to the application force of input shaft than hour, steering shaft to the input shaft retainer shaft to stationkeeping; But receive at steering shaft under the effect of huge external force; Steel ball in the spacing hole can roll at the input shaft inwall, thereby has stronger crumple function, makes column assy satisfy its required crumple power requirement.
As an optimal technical scheme of the utility model, the two ends of said spacing hole all have said steel ball, and described spring installation is between two steel balls.The two ends of spacing hole all have steel ball, so that column assy has better crumple ability what receive external force as the time spent.
As another optimal technical scheme of the utility model, the sealing of an end of said spacing hole, other end opening, the open end of said spacing hole has said steel ball, and said spring installation one end props up the closed end of spacing hole, and the other end and steel ball offset.During installation, available hand props up steel ball, thereby steel ball is inserted in the input shaft.One end of spacing hole seals to installation and has brought very big facility.
As preferably, the equal opening in the two ends of said spacing hole, an end of the spacing hole connecting element that removably connects, the other end has said steel ball, and said spring installation is arranged between said connecting element and the steel ball.Through the predetermincd tension of connecting element scalable steering shaft to input shaft, make its requirement of satisfying crumple power, can also eliminate the assembly clearance between input shaft and the steering shaft simultaneously.
As preferably, the bolt of said connecting element for being threaded with said spacing hole.Bolt is threaded with spacing hole, can make things convenient for the bolt adjusting position.
As preferably, said connecting element and said spacing hole interference fit.
As preferably, the connecting bridge of said input shaft and steering shaft has a mounting hole.On the input shaft outer wall, offer a mounting hole, when being used in steering shaft and input shaft spline fitted, from the mounting hole of input shaft, steel ball, spring installation and connecting element are inserted, make more convenient to operate and effective.
As preferably, the cross section of described spacing hole is circular.It is that steel ball rolls in spacing hole for ease that circular spacing hole is set.
As preferably, said spring installation is a preloading spring.Make generation diametral load in the opposite direction between steering shaft and the input shaft through regulating preloading spring.
The utility model can have the following advantages column assy through the setting of the steel ball in spacing hole and the spacing hole etc.:
1), the assembly clearance between elimination input shaft and the steering shaft;
2), satisfy the technical requirements of column assy crumple power;
3), satisfy the technical requirements of assembling back right alignment between input shaft and the steering shaft;
4), improve efficiency of assembling, reduce production costs.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Wherein: 1, steering shaft; 2, input shaft; 3, connecting element; 4, spacing hole; 5, steel ball; 6, spring installation.
The specific embodiment
Below in conjunction with the specific embodiment and accompanying drawing the utility model is described in further detail.Should be appreciated that following embodiment is merely exemplary, can not limit the scope of the utility model.
Shown in Figure 1 is a kind of column assy of electric boosting steering system; Comprise steering shaft 1 and with the input shaft 2 of steering shaft 1 spline fitted, have radially spacing hole 4 on the steering shaft 1, be provided with steel ball 5, spring installation 6, connecting element 3 in the spacing hole 4 successively; The inwall of steel ball 5 contact input shafts 2; Spring installation 6 one ends prop up steel ball 5, and the other end props up connecting element 3, and connecting element 3 removably connects with spacing hole 4; The exposed spacing holes of connecting element 34 outer end faces do not exceed the end face of the path of spline, make the position of connecting element 3 can not cause the mismate of spline; Input shaft 2 has a mounting hole with steering shaft 1 connecting bridge, when being used in steering shaft 1 with input shaft 2 spline fitted, from the mounting hole of input shaft 2, steel ball 5, spring installation 6 and connecting element 3 is inserted, and makes more convenient to operate and effective.Connecting element shown on the figure 3 is a bolt, and like M8 * 6 bolts, spacing hole's 4 upper inner wall are provided with screw thread, and connecting element 3 is threaded with spacing hole 4.Spring installation 6 can be preloading spring, makes generation diametral load in the opposite direction between steering shaft 1 and the input shaft 2 through regulating preloading spring.The cross section of spacing hole 4 is circular, rolls in spacing hole 4 to make things convenient for steel ball 5.The size of steel ball 5, the dimensional characteristic of spring installation 6, the type of connecting element 3 and size etc. all can be selected for use according to actual needs.
Steering shaft 1 and input shaft 2 are connected through spline; The circumferential position that guarantees steering shaft 1 and input shaft 2 is fixed; Spacing hole 4 is set on steering shaft 1 and be located at steel ball 5, spring installation 6 and connecting element 3 in the spacing hole 4 be for when the application force of 1 pair of input shaft 2 of steering shaft hour; Make 1 pair of input shaft 2 retainer shaft of steering shaft to stationkeeping, but receive under the effect of huge external force at steering shaft 1, the steel ball 5 in the spacing hole 4 can roll at input shaft 2 inwalls; Thereby have stronger crumple function, make column assy satisfy its required crumple power requirement.
In actual the use is to assemble this steering tube assembly as follows: the mounting hole that will be positioned on the input shaft 2 places same direction with the spacing hole 4 that is positioned on the steering shaft 1; Steering shaft 1 is inserted input shaft 2 to spacing hole 4 and aligns with mounting hole on the input shaft 2 along spline; Steel ball 5 is packed into and is positioned at the spacing hole 4 on the steering shaft 1 through being positioned at mounting hole on the input shaft 2; Spring installation 6 is packed into and is positioned at the spacing hole 4 on the steering shaft 1 through being positioned at mounting hole on the input shaft 2; Connecting element 3 is packed into and tightened the position of connecting element 3 to regulation after being positioned at the spacing hole 4 on the steering shaft 1 through being positioned at mounting hole on the input shaft 2; Steel ball 5 splashes into anaerobic adhesive when being screwed into connecting element 3, prevents that connecting element 3 is loosening, owing to can roll at the inwall of input shaft 2; So can steering shaft 1 be inserted to the position that the designated length of input shaft 2 requires along spline, so assembling is accomplished.
When collision happens; Chaufeur crash direction dish, masterpiece are used on the steering shaft 1, and steering shaft 1 is to cooperate with the spline mode with input shaft 2; So steering shaft 1 can apply power to input shaft 2; The effect of leaning on steel ball 5 and spring installation 6 is the absorbing impact energy effectively, reduces the risk of injury coefficient of chaufeur, thereby satisfies the technical requirements of column assy crumple power.
Claims (10)
1. the column assy of an electric boosting steering system; Comprise steering shaft (1) and with the input shaft (2) of said steering shaft (1) spline fitted; It is characterized in that: have the spacing hole (4) that radially is provided with on the said steering shaft (1); At least one end of spacing hole (4) has a steel ball (5), is provided with in the spacing hole (4) to push the spring installation (6) that steel ball (5) touches said steering shaft (1) inwall.
2. the column assy of electric boosting steering system according to claim 1, it is characterized in that: the two ends of said spacing hole (4) all have said steel ball (5), and described spring installation (6) is positioned between two steel balls (5).
3. the column assy of electric boosting steering system according to claim 1; It is characterized in that: the end sealing of said spacing hole (4); Other end opening; The open end of said spacing hole (4) has said steel ball (5), and said spring installation (6) one ends prop up the closed end of spacing hole (4), and the other end and steel ball (5) offset.
4. the column assy of electric boosting steering system according to claim 1; It is characterized in that: the equal opening in two ends of said spacing hole (4); One end of spacing hole (4) connecting element (3) that removably connects; The other end has said steel ball (5), and said spring installation (6) is arranged between said connecting element (3) and the steel ball (5).
5. the column assy of electric boosting steering system according to claim 4 is characterized in that: the bolt of said connecting element (3) for being threaded with said spacing hole (4).
6. the column assy of electric boosting steering system according to claim 5 is characterized in that: said input shaft (2) has a mounting hole with the connecting bridge of steering shaft (1).
7. the column assy of electric boosting steering system according to claim 4 is characterized in that: said connecting element (3) and said spacing hole (4) interference fit.
8. the column assy of electric boosting steering system according to claim 7 is characterized in that: said input shaft (2) has a mounting hole with the connecting bridge of steering shaft (1).
9. according to the column assy of the described electric boosting steering system of arbitrary claim among the claim 1-8, it is characterized in that: the cross section of described spacing hole (4) is for circular.
10. according to the column assy of the described electric boosting steering system of arbitrary claim among the claim 1-8, it is characterized in that: said spring installation (6) is a preloading spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205615752U CN202400145U (en) | 2011-12-29 | 2011-12-29 | Steering column assembly for electric power steering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205615752U CN202400145U (en) | 2011-12-29 | 2011-12-29 | Steering column assembly for electric power steering system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202400145U true CN202400145U (en) | 2012-08-29 |
Family
ID=46697812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205615752U Expired - Fee Related CN202400145U (en) | 2011-12-29 | 2011-12-29 | Steering column assembly for electric power steering system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202400145U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103921833A (en) * | 2014-04-08 | 2014-07-16 | 东北电力大学 | Reusable energy-absorbing steering column of automobile |
-
2011
- 2011-12-29 CN CN2011205615752U patent/CN202400145U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103921833A (en) * | 2014-04-08 | 2014-07-16 | 东北电力大学 | Reusable energy-absorbing steering column of automobile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120829 Termination date: 20131229 |