CN203078584U - Connecting structure for gear shaft and torsion bar of automobile steering device - Google Patents
Connecting structure for gear shaft and torsion bar of automobile steering device Download PDFInfo
- Publication number
- CN203078584U CN203078584U CN 201320074249 CN201320074249U CN203078584U CN 203078584 U CN203078584 U CN 203078584U CN 201320074249 CN201320074249 CN 201320074249 CN 201320074249 U CN201320074249 U CN 201320074249U CN 203078584 U CN203078584 U CN 203078584U
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- Prior art keywords
- torsion bar
- gear shaft
- inner spline
- gear
- wheel shaft
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- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 239000002699 waste material Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 6
- 238000013459 approach Methods 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000011982 device technology Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The utility model relates to a connecting structure for a gear shaft and a torsion bar of an automobile steering device, belonging to the technical foiled of an automobile steering device. The connecting structure comprises the gear shaft and the torsion bar, wherein an assembly hole is formed in the gear shaft, twenty-four inner spline teeth are arranged on the periphery of the inner surface of the assembly hole, and the torsion bar is matched with the inner spline teeth to be in interference fit with the gear shaft; and the pressure angle of the inner spline teeth is 30 degrees. When the connecting structure is assembled, the inner spline teeth enables the torsion bar and the gear shaft to be in reasonable interference fit with each other due to the torsion bar matched with the inner spline teeth, so that the whole quality of a tooth torsion assembly can be improved, and the quality problems that the outer diameter deformation of the gear shaft is large, the torsion bar is large in jump and cannot be completely pressed into the gear shaft and the like after an existing gear shaft and an existing torsion bar are assembled with each other in a pressing way can be solved; the technology requirement of the gear torsion assembly can be met, the lean production can be preferably carried out, and a mass of production waste can be avoided; and the gear torsion assembly can be scientifically and reasonably assembled.
Description
Technical field
The utility model relates to the connection structure of a kind of automobile steering device gear wheel shaft and torsion bar, belongs to the automobile steering device technology field.
Background technology
Gear wheel shaft and torsion bar are the moment of torsion input and output device in the deflector, the positive process of returning of deflector is to rely on the elastic properties of materials of torsion bar to reset, so, in the deflector the inside, it is the spline interference fit that used tooth is turned round the assembly press-fit approach, and conventional spline angle of obliquity is designed to 45 degree.Because the strong facewidth degree of this angle of obliquity is big, intensity is big, and therefore the torsional forces that bears is also big; But because the tooth thickness degree is big, the positive pressure that is born in press-fiting process simultaneously is also big, friction force is also big, so just caused be pressed into difficulty and be pressed into friction force and the mutual action of Poisson's coefficient under make torsion bar and gear wheel shaft center off-centre in press-fiting, torsion bar takes place press partially, press situations such as askew, pressure increase, the gear wheel shaft external diameter distortion after causing press-fiting is big, torsion bar is beated greatly, and torsion bar such as can't be pressed into fully at quality problems, can't satisfy the technological requirement of assembling, also be unfavorable for leaning manufacturing simultaneously
,And caused a large amount of production to waste.Development along with the domestic automobile industry, in output with comparatively strict demand and management arranged qualitatively, simultaneously also in order to eliminate the waste in the production and constantly to improve, strengthen the fluency in the manufacturing line production process, therefore stability on the basis of now using pattern, turned round assembly at tooth and press-fited, take a kind of more science and reasonably press mounting structure and press-fit approach, promote tooth and turn round the total quality of assembly and reduce and turn round assembly because of tooth and press-fit unstable a series of problems of bringing to the deflector assembling.
Summary of the invention
The purpose of this utility model is: provide a kind of and can effectively improve existing gear wheel shaft and torsion bar press-fits in the process, because the tooth thickness degree is big, make torsion bar and gear wheel shaft center off-centre in press-fiting, torsion bar takes place press inclined to one side, situations such as pressure is askew, pressure increase, the distortion of gear wheel shaft external diameter after causing press-fiting is big, torsion bar is beated greatly, and torsion bar such as can't be pressed into fully at the automobile steering device gear wheel shaft of quality problems and the connection structure of torsion bar.
The technical solution of the utility model is:
The connection structure of a kind of automobile steering device gear wheel shaft and torsion bar, comprise gear wheel shaft and torsion bar, it is characterized in that: gear wheel shaft is provided with assembly opening, and the inside face circumference of assembly opening is provided with inner spline gear, and torsion bar is by being connected with the gear wheel shaft interference with the cooperation of inner spline gear; Described inner spline gear quantity is 24, and the angle of obliquity of inner spline gear is 30 degree.
Advantage of the present utility model is:
The connection structure of this automobile steering device gear wheel shaft and torsion bar adopts 30 degree angle of obliquitys, 24 tooth female splines structures, because pressure angle is little, strong crown, addendum width is narrow, it is little to have the positive pressure that is pressed into, friction coefficient is little and bring the power that is pressed into for a short time; small deformation amount and good torsion bar advantage such as beat; having solved existing gear wheel shaft and torsion bar press-fits in the process; because the tooth thickness degree is big; make torsion bar and gear wheel shaft center off-centre in press-fiting; torsion bar takes place presses partially; presses askew; situations such as pressure increase; the gear wheel shaft external diameter after causing press-fiting is out of shape greatly; torsion bar is beated greatly, torsion bar such as can't be pressed into fully at quality problems; Satisfy tooth and turned round the set assembling technology requirement, helped leaning manufacturing, avoided a large amount of production wastes; Make tooth turn round the assembling root tool science and the reasonableness of assembly.
Description of drawings
Fig. 1 is a decomposition texture scheme drawing of the present utility model;
Fig. 2 is that the B-B of Fig. 1 middle gear axle is to structural representation.
Among the figure: 1, gear wheel shaft, 2, torsion bar, 3, assembly opening, 4, inner spline gear.
The specific embodiment
The connection structure of this automobile steering device gear wheel shaft and torsion bar comprises gear wheel shaft 1 and torsion bar 2, and gear wheel shaft 1 is provided with assembly opening 3, and the inside face circumference of assembly opening 3 is provided with inner spline gear 4.Inner spline gear 4 quantity are 24, and the angle of obliquity of inner spline gear 4 is 30 degree.Torsion bar 2 is by being connected with gear wheel shaft 1 interference with the cooperation of inner spline gear 4.
Inner spline gear 4 angle of obliquitys of this connection structure are 30 degree, inner spline gear 4 is by torsion bar 2 with matching in the fitting process, make between torsion bar 2 and the gear wheel shaft 1 and be connected with rational interference fit, improve tooth and turned round the total quality of assembly, having solved existing gear wheel shaft 1 press-fits in the process with torsion bar 2, because inner spline gear 4 tooth thickness degree are big, make torsion bar 2 and gear wheel shaft 1 center off-centre in press-fiting, torsion bar 2 takes place presses partially, press askew, situations such as pressure increase, gear wheel shaft 1 external diameter distortion after causing press-fiting is big, torsion bar 2 is beated greatly, and torsion bar 2 can't be pressed into quality problems such as gear wheel shaft 1 fully; Satisfy tooth and turned round the set assembling technology requirement, helped leaning manufacturing, avoided a large amount of production wastes; Make tooth turn round the assembling root tool science and the reasonableness of assembly.Reduced and turned round assembly because of tooth and press-fit unstable a series of problems of bringing to the deflector assembling.
The utility model is through too much wheel checking, to be pressed into power, deflection, beat, pulling-out force tests, and obtained desirable effect.Its concrete outcome is as follows:
Whenever, take turns gear wheel shaft 1 and the torsion bar 2 that structure after 20 improvement is adopted in checking, the data in the table are every aviation value of taking turns checking, and press-fit data (averaging for 200) with the gear wheel shaft of conventional structure (45 degree angle of obliquitys, 24 tooth spline structures) and compare.
Claims (1)
1. the connection structure of automobile steering device gear wheel shaft and torsion bar, comprise gear wheel shaft (1) and torsion bar (2), it is characterized in that: gear wheel shaft (1) is provided with assembly opening (3), the inside face circumference of assembly opening (3) is provided with inner spline gear (4), and torsion bar (2) is by being connected with gear wheel shaft (1) interference with the cooperation of inner spline gear (4); Described inner spline gear (4) quantity is 24, and the angle of obliquity of inner spline gear (4) is 30 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320074249 CN203078584U (en) | 2013-02-17 | 2013-02-17 | Connecting structure for gear shaft and torsion bar of automobile steering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320074249 CN203078584U (en) | 2013-02-17 | 2013-02-17 | Connecting structure for gear shaft and torsion bar of automobile steering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203078584U true CN203078584U (en) | 2013-07-24 |
Family
ID=48824445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320074249 Expired - Fee Related CN203078584U (en) | 2013-02-17 | 2013-02-17 | Connecting structure for gear shaft and torsion bar of automobile steering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203078584U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111469972A (en) * | 2017-05-30 | 2020-07-31 | 株式会社岛野 | Bicycle rear sprocket assembly |
-
2013
- 2013-02-17 CN CN 201320074249 patent/CN203078584U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111469972A (en) * | 2017-05-30 | 2020-07-31 | 株式会社岛野 | Bicycle rear sprocket assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130724 Termination date: 20160217 |