CN201141431Y - Improved rack lining of mechanical steering gear - Google Patents
Improved rack lining of mechanical steering gear Download PDFInfo
- Publication number
- CN201141431Y CN201141431Y CNU2007200888634U CN200720088863U CN201141431Y CN 201141431 Y CN201141431 Y CN 201141431Y CN U2007200888634 U CNU2007200888634 U CN U2007200888634U CN 200720088863 U CN200720088863 U CN 200720088863U CN 201141431 Y CN201141431 Y CN 201141431Y
- Authority
- CN
- China
- Prior art keywords
- rack
- bushing
- steering gear
- lining
- mechanical steering
- 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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- Gears, Cams (AREA)
Abstract
The utility model relates to a rack bushing of an improved mechanical steering device, which belongs to the parts of the vehicle. The rack bushing is provided with a soft material barrel, and is characterized in that axial strip-shaped bulges which are distributed evenly are arranged on the inner circle surface of the barrel of the bushing, and cutting planes corresponding to the bulges are arranged on the outer circle surface of the barrel of the bushing. The rack bushing can automatic compensate the clearance cause by attrition between the rack and the bushing for supporting the rack, to ensure the rack and the bushing to keep the proper fit all the time. The adverse effect to the service performance of the vehicle steering device because the fit between the rack and the bushing is over tight or the clearance is overlarge after attrition is solved, and the contact area between the rack and the bushing is reduced, which is favorable for the movement of the rack.
Description
Technical field
The utility model relates to the automobile mechanical commutator, especially wherein is used to support the lining of tooth bar.
Background technique
Be provided with pinion and rack in the automobile mechanical commutator.Described tooth bar one end is supported by the gear that is engaged with, and the other end is stretched in a lining with cylindric, and lining is the cylindrical shell of a soft material, and interference is fixed in the steering gear housing.When handling commutator, tooth bar axially moves back and forth in lining.After service time was long, along with the generation of wearing and tearing, the gap between tooth bar and lining was increasing, sends abnormal voice in the movement process; If with matching design tighter of the two, then tooth bar moves difficulty, influences automobile and just returns.
Summary of the invention
The purpose of the utility model provides a kind of improved mechanical steering gear rack bush, makes lining contact tooth bar all the time, and the wear automatic-compensation that is produced cooperates the problem that tension or excesssive gap produced thereby solve between the two.
Above-mentioned purpose is to be achieved with such technological scheme: the inner headed face at lining is provided with uniform axial strip projected parts, in the periphery setting and the corresponding cutting plane of strip projected parts of lining.
After the assembling, tooth bar is by the suitable stretching of strip projected parts uniform in the lining, and the cutting plane pairing with strip projected parts produces resiliently deformable outside circle; After strip projected parts was worn, the cutting plane place of resiliently deformable automatically reset, and contacted thereby make to remain between tooth bar and the lining.
The beneficial effects of the utility model are:
Owing to axial strip projected parts is set at the lining inner headed face, the tooth bar cylindrical end is supported by projection, and cutting plane is set at the lining periphery at place, protruding place, make this place's jacket wall attenuate, and produce the space between the steering gear housing, thereby the resiliently deformable that caused by projection can take place, in the process that wearing and tearing take place, the jacket wall of resiliently deformable automatically resets, and has avoided cooperating between tooth bar and the lining harmful effect to the commutator usability of tension or excesssive gap.Greatly reduce with the area of contact between hour rack and the lining, the resistance that tooth bar is moved also reduces relatively.
Description of drawings
Fig. 1 is the utility model plan view;
Fig. 2 is the axial sectional view of Fig. 1.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
Referring to Fig. 1, Fig. 2, lining is the soft cylindrical shell of being made by plastics or nylon, and 3 uniform axial strip projected parts 1 are set on the disc within it, and obviously the effective length of projection 1 should be able to satisfy the stroke that tooth bar moves, projection 1 appearance is smooth streamline, is beneficial to tooth bar and moves axially; On the periphery of lining cylindrical shell, be provided with and projection 1 corresponding cutting plane 2, the width of cutting plane 2 should can be 2 times of ledge width obviously greater than the width of projection 1, is beneficial to its stressed back to the distortion of circle outside sweep.For making lining easily be squeezed into steering gear housing, and make its axially locating simple,, between cutting plane 2, axial tooth 4 is set, reduce the resistance when clamp-oning housing at the cylindrical shell periphery at stagger three place's seams 3 of cutting plane 2 of cylindrical shell one end setting.
Claims (5)
1, a kind of improved mechanical steering gear rack bush has the cylindrical shell of a soft material, it is characterized in that, is provided with uniform axial strip projected parts on the inner headed face of lining cylindrical shell, is provided with on the periphery of lining cylindrical shell and the corresponding cutting plane of described projection.
2, a kind of improved mechanical steering gear rack bush according to claim 1 is characterized in that described projection is three, and appearance is smooth streamline.
3, a kind of improved mechanical steering gear rack bush according to claim 1 is characterized in that, the width of described cutting plane is obviously greater than the width of described projection.
4, a kind of improved mechanical steering gear rack bush according to claim 1 is characterized in that an end of lining cylindrical shell is provided with the seam of the described cutting plane that staggers.
5, a kind of improved mechanical steering gear rack bush according to claim 1 is characterized in that, is provided with axial tooth on the periphery of lining cylindrical shell between described cutting plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200888634U CN201141431Y (en) | 2007-12-07 | 2007-12-07 | Improved rack lining of mechanical steering gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200888634U CN201141431Y (en) | 2007-12-07 | 2007-12-07 | Improved rack lining of mechanical steering gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201141431Y true CN201141431Y (en) | 2008-10-29 |
Family
ID=40069143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200888634U Expired - Fee Related CN201141431Y (en) | 2007-12-07 | 2007-12-07 | Improved rack lining of mechanical steering gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201141431Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829154A (en) * | 2012-09-20 | 2012-12-19 | 重庆龙润汽车转向器有限公司 | Gear rack bushing |
-
2007
- 2007-12-07 CN CNU2007200888634U patent/CN201141431Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829154A (en) * | 2012-09-20 | 2012-12-19 | 重庆龙润汽车转向器有限公司 | Gear rack bushing |
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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: 20081029 Termination date: 20121207 |