CN202754017U - Torsion bar of steering gear - Google Patents
Torsion bar of steering gear Download PDFInfo
- Publication number
- CN202754017U CN202754017U CN 201220433943 CN201220433943U CN202754017U CN 202754017 U CN202754017 U CN 202754017U CN 201220433943 CN201220433943 CN 201220433943 CN 201220433943 U CN201220433943 U CN 201220433943U CN 202754017 U CN202754017 U CN 202754017U
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- CN
- China
- Prior art keywords
- torsion bar
- screw rod
- air discharge
- discharge duct
- steering gear
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Abstract
The utility model provides a torsion bar of a steering gear, belongs to the technical field of automobile parts, and aims at solving the problems that the manufacturing of existing torsion bars is troublesome, production cost is high, and the like. The torsion bar of the steering gear comprises a bar body which is in the shape of a cylinder, one end of the bar body is a connecting end which is fixedly connected with a screw rod, the bar body is connected with the screw rod in an interference fit mode, and an air discharge groove is arranged at the connecting end. The torsion bar of the steering gear has the advantages of being convenient to manufacture, low in cost and the like.
Description
Technical field
The utility model belongs to the vehicular spare parts technical field, relates to a kind of torsion bar, particularly a kind of torsion bar of automobile steering device.
Background technology
Along with developing rapidly of auto trade, user vehicle also requires vehicle price cheap except more and more higher to the performance requriements of automobile.The power steering of automobile is the control motor turning and connects one of important spare part of oil pump.The power steering gear screw assembly is a vitals in the power steering, and the steering screw of power steering gear screw assembly is hollow shaft.In order to guarantee the performance requriements of steering assembly, generally all design comparison is long for the length dimension of its steering screw, torsion bar length dimension in it is also thereupon longer, mode with welding between this power steering gear screw assembly, steering screw and torsion bar is connected, not only complex structure, and the operation of making is many, difficulty is large, and the simultaneously consumption of material is large, and cost is high.
For the problems referred to above, people have made improvement, and for example the Chinese patent literature data discloses a kind of power steering gear screw assembly [patent No.: 201120126154.7 of press mounting structure; Granted publication number: CN202025150U], it comprises steering screw, torsion bar, input shaft, valve pocket, valve pocket, input shaft, torsion bar are arranged in the steering screw successively, there is bearing one end outer ring of input shaft, the other end is connected with torsion bar by straight pin, valve pocket is connected with steering screw by straight pin, and the endoporus of steering screw is blind hole, and passes through spline joint between steering screw and the torsion bar.
Screw rod and torsion bar are by spline joint, and spline processing trouble uses the spline joint cost high, deficiency in economic performance.
Summary of the invention
The purpose of this utility model is for the above-mentioned problems in the prior art, and the torsion bar of the low deflector of a kind of easy to process and cost is provided.
The purpose of this utility model can realize by following technical proposal: a kind of torsion bar of deflector, the body of rod of torsion bar is cylindric, the coupling end of one end for being used for being connected mutually with screw rod, it is characterized in that, described torsion bar is to be connected by interference fit with screw rod, has air discharge duct on the described coupling end.
The torsion bar of this deflector is positioned at screw rod, the endoporus of screw rod is blind hole, principle or hard squeezing by expanding with heat and contract with cold make torsion bar be connected mutually by interference fit and screw rod, have deflation hole on the coupling end of torsion bar, when making torsion bar insert the endoporus of screw rod, gas in the screw rod endoporus is discharged by air discharge duct, prevents that the gas in the screw rod endoporus is compressed and produces a power of outwards pushing up, and is easy for installation, simple in structure, cost is low.
In the torsion bar of above-mentioned a kind of deflector, the diameter of described coupling end is greater than the diameter of the body of rod.It is cylindric that coupling end is, and diameter is greater than the centre portion of the torsion bar body of rod, and the setting of easy to exhaust groove is rational in infrastructure.
In the torsion bar of above-mentioned a kind of deflector, described air discharge duct is in-line.Air discharge duct is the both ends of the surface that in-line runs through coupling end, and when screw rod was connected with torsion bar, the gas in the screw rod endoporus can be discharged by air discharge duct, and was simple in structure, and air discharge duct also can be done other various shapes such as spirality certainly.
In the torsion bar of above-mentioned a kind of deflector, the degree of depth of described air discharge duct is 0.2mm.The degree of depth of air discharge duct is lower, and the Joint strenght in the time of can not having influence on torsion bar and be connected with screw rod is rational in infrastructure.
In the torsion bar of above-mentioned a kind of deflector, the other end of described torsion bar is homalocephalus.Homalocephalus is square, and edge has chamfering, is used for being connected with input shaft, and torsion bar can slightly be twisted, and the control fuel tap rotates.
Compared with prior art, the torsion bar of a kind of deflector of providing of the utility model has the following advantages:
1, the torsion bar of this deflector makes torsion bar be connected with screw rod by interference fit, and the convenience of connection is simple in structure.
2, the coupling end place of the torsion bar of this deflector has air discharge duct, and when air discharge duct made torsion bar be connected with screw rod, the gas in the screw endoporus was discharged along air discharge duct, can not produce the power on outside top, and the obstruction torsion bar is connected with screw rod, connects laborsaving.
Description of drawings
Fig. 1 is the front view of the torsion bar of this deflector.
Fig. 2 is the upward view of the torsion bar of this deflector.
Among the figure, 1, the body of rod; 2, coupling end; 3, air discharge duct; 4, homalocephalus.
The specific embodiment
Below be specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiment.
The torsion bar of a kind of deflector that the utility model provides is important parts in the automobile power steering, controls the rotation of fuel tap by the slight twisting of torsion bar.Torsion bar is that a cylindrical blank material is processed through turning, carries out the fine limit work moulding again, then carries out induction hardening, and the strength difference of each position of torsion bar is realized with the different temperatures tempering in different positions.As shown in Figure 1, the body of rod 1 in the middle of it comprises, coupling end 2 and the homalocephalus 4 at two, coupling end 2 is cylindric, have the air discharge duct 3 that runs through coupling end 2 both ends of the surface on it, as shown in Figure 2, the degree of depth of air discharge duct 3 is 0.2mm, air discharge duct 3 can be various shapes, air discharge duct 3 in the present embodiment is in-line, and simple in structure, exhaust efficiency is high.Homalocephalus 4 is cube-shaped, and edge has chamfering, is used for being connected with input shaft, and torsion bar can slightly be twisted, and the control fuel tap rotates.It is similar cylindric that the body of rod 1 is, and length is longer, is used for connecting coupling end 2 and homalocephalus 4.The slightly larger in diameter of coupling end 2 is in the diameter of screw rod endoporus.
During assembling, principle or hard method of squeezing by expanding with heat and contract with cold are connected torsion bar and screw rod mutually.When employing is expanded with heat and contract with cold, first screw rod is heat-treated, make the diameter change of screw rod endoporus carry out cold treatment greatly or to torsion bar, the diameter of torsion bar coupling end 2 is diminished, when the diameter of torsion bar coupling end 2 is slightly less than the diameter of screw rod endoporus or when basically identical, the coupling end 2 of torsion bar is inserted in the endoporus of screw rod, owing to having air discharge duct 3 on the coupling end 2, gas in the screw rod endoporus is discharged by air discharge duct 3, can not produce the power on outside top, hinder the installation of torsion bar, easy for installation, screw rod after the assembling and torsion bar are put in the room temperature and cool off, and screw rod and torsion bar just reach friction tight effect.
Specific embodiment described herein only is to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has more used the terms such as the body of rod 1, coupling end 2, air discharge duct 3, homalocephalus 4, do not get rid of the possibility of using other term.Using these terms only is in order to describe more easily and explain essence of the present utility model; They are construed to any additional restriction all is contrary with the utility model spirit.
Claims (5)
1. the torsion bar of a deflector, the body of rod of torsion bar (1) is cylindric, and the coupling end (2) of one end for being used for being connected mutually with screw rod is characterized in that, described torsion bar is to be connected by interference fit with screw rod, has air discharge duct (3) on the described coupling end (2).
2. the torsion bar of a kind of deflector according to claim 1 is characterized in that, the diameter of described coupling end (2) is greater than the diameter of the body of rod (1).
3. the torsion bar of a kind of deflector according to claim 1 is characterized in that, described air discharge duct (3) is in-line.
4. according to claim 1 and 2 or the torsion bar of 3 described a kind of deflectors, it is characterized in that, the degree of depth of described air discharge duct (3) is 0.2mm.
5. according to claim 1 and 2 or the torsion bar of 3 described a kind of deflectors, it is characterized in that, the other end of described torsion bar is homalocephalus (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220433943 CN202754017U (en) | 2012-08-29 | 2012-08-29 | Torsion bar of steering gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220433943 CN202754017U (en) | 2012-08-29 | 2012-08-29 | Torsion bar of steering gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202754017U true CN202754017U (en) | 2013-02-27 |
Family
ID=47733212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220433943 Expired - Fee Related CN202754017U (en) | 2012-08-29 | 2012-08-29 | Torsion bar of steering gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202754017U (en) |
-
2012
- 2012-08-29 CN CN 201220433943 patent/CN202754017U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 317600 Jiefangtang Farm, Yucheng Street, Yuhuan County, Taizhou City, Zhejiang Province Patentee after: ZHEJIANG HUIFENG AUTO PARTS Co.,Ltd. Address before: 317600 Jiefangtang Farm, Yucheng Street, Yuhuan County, Taizhou City, Zhejiang Province Patentee before: ZHEJIANG HUIFENG AUTOPARTS MFG Co.,Ltd. |
|
| 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: 20130227 Termination date: 20210829 |