CN203926730U - A kind of power-assisted limit structure - Google Patents
A kind of power-assisted limit structure Download PDFInfo
- Publication number
- CN203926730U CN203926730U CN201420320058.XU CN201420320058U CN203926730U CN 203926730 U CN203926730 U CN 203926730U CN 201420320058 U CN201420320058 U CN 201420320058U CN 203926730 U CN203926730 U CN 203926730U
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- limit structure
- shift shaft
- pin
- hollow shift
- power
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Abstract
The utility model relates to a kind of power-assisted limit structure, comprises from inside to outside axle, hollow shift shaft and interior axle shifting block in the gearshift of socket successively; Described interior axle shifting block is sold and is fixed on the interior axle of gearshift by startup, and three can rotate relative to hollow shift shaft; On described hollow shift shaft, limit structure hole is set, described startup pin is through limit structure hole, and the direction of rotating along axle in gear shift, start between pin and limit structure hole gap is set, gap is radially increased gradually and forms tapering to outer surface by internal surface along hollow shift shaft, and the tapering in limit structure hole equals to start the maximum angle that pin rotates relative to hollow shift shaft.In the utility model, starting pin is face contact with contacting of hollow shift shaft, and the relative line contact of its area of contact improves greatly, improves the stressing conditions of hollow shift shaft, increases the working life of hollow shift shaft.
Description
Technical field
The utility model relates to automobile power-aid transmission field, relates in particular to a kind of power-assisted limit structure.
Background technique
Along with the development of automotive industry and ergonomics, people are also more and more higher to the requirement of automobile, in obtaining good power character, Security, Economy, also require automobile to there is good handling comfort, shift gears booster not only can be by reducing berth-changing strength, dwindling gear shift stroke increases handling comfort, and because fast, servo-actuated property of its response time obtains well user's favor, it is trend of the times that manual transmission installs shift gears booster additional.
Need to design special Effector with gear shift power-aid transmission, this kind of Effector designed idle stroke limit structure for the opening travel that ensures power-assisted spool on hollow shift shaft, and existing limit structure all adopts straight groove structure.
The spacing design that current band is assisteded control hollow shift shaft adopts straight groove structure, as shown in Figure 1, gap between the width of straight trough and startup pin can ensure the unlatching of spool, servo-cylinder produces that power-assisted effect is counter pushes away hollow shift shaft gear shift, in the time that power-assisted deficiency needs manual assisted gearshift or booster inefficacy non helping hand, start pin and also can promote hollow shift shaft gear shift, but be line contact because starting pin and contacting of hollow shift shaft, as shown in Figure 2, can cause localized stress excessive cause hollow shift shaft to twist off or start pin damage.Although this structure has ensured the needs of spool opening travel, but in the time needing manually auxiliary or booster to lose efficacy when booster power-assisted is not enough, need hand shift without air feed, because of groove shape and start pin and coordinates insufficient meeting to cause the excessive even destruction of the localized stress of hollow shift shaft, shorten hollow shift shaft working life.
Summary of the invention
The purpose of this utility model is to overcome prior art defect, and a kind of pin coordinates abundant, hollow shift shaft long service life power-assisted limit structure with hollow shift shaft that starts is provided.
The technical solution of the utility model is:
Comprise axle, hollow shift shaft and interior axle shifting block in the gearshift being from inside to outside socketed successively; Described interior axle shifting block is sold and is fixed on the interior axle of gearshift by startup, and three can rotate relative to hollow shift shaft;
On described hollow shift shaft, limit structure hole is set, described startup pin is through limit structure hole, and the direction of rotating along axle in gear shift, start between pin and limit structure hole gap is set, gap is radially increased gradually and forms tapering to outer surface by internal surface along hollow shift shaft, and the tapering in limit structure hole equals to start the maximum angle that pin rotates relative to hollow shift shaft.
Described startup pin is cylindrical.
Described limit structure hole is quadrant, and its two ends are the semi-cylindrical recesses coordinating with startup pin, between two groove center of circle lines, form angle.
Described groove radius is equal to the radius that starts pin.
Distance between the covering of the fan of described quadrant both sides equals to start the radius of pin.
Between the semi-cylindrical recesses center of circle line of two, described limit structure hole, the angle of angle equals to start the maximum angle that pin rotates relative to hollow shift shaft.
On described hollow shift shaft, be provided for connecting the straight trough of booster outer shaft shifting block.
The utility model changes the straight trough on hollow tradition shift shaft into limit structure hole, start between pin and limit structure hole gap is set, gap is radially increased gradually and forms tapering to outer surface by internal surface along hollow shift shaft, tapering equates with the maximum angle that starts pin rotation, while having ensured booster work, starting pin is face contact with contacting of hollow shift shaft, the relative line contact of its area of contact improves greatly, starting pin coordinates fully with hollow shift shaft, stress equilibrium distributes, improve the stressing conditions of hollow shift shaft, increase the working life of hollow shift shaft, and known by the principle of active force and reaction force, the utility model has improved the stressing conditions that starts pin simultaneously, also ensured that increased its working life.
Further, limit structure hole is quadrant, and two ends and the cooperation of startup pin, and both are fully contacted, and stressing conditions is even.
Further, groove radius is equal to the radius of startup pin, and the half and the groove that start the rear outer surface of pin rotation are fitted completely, and area of contact is larger.
Further, distance between the covering of the fan of quadrant both sides equals to start the radius of pin, has ensured to start the axially locating of pin on hollow shift shaft, avoids the relatively hollow shift shaft of axle shifting block in power-assisted to move axially, may cause the bad connection of interior axle shifting block and booster, causing cannot power-assisted.
Brief description of the drawings
Fig. 1 is the plan view that existing band is assisteded control the spacing design of hollow shift shaft employing straight groove structure;
Fig. 2 be in Fig. 1 A-A to sectional view;
Fig. 3 is that the spacing design of existing employing straight groove structure is at the structural representation of neutral gear;
Fig. 4 is the structural representation in the spacing design engage a gear process of existing employing straight groove structure;
Fig. 5 is the contact area enlarged view that starts pin and hollow shift shaft in Fig. 4, is line contact;
Fig. 6 is the plan view of the hollow shift shaft limit structure of the utility model;
Fig. 7 is that B-B in Fig. 6 is to sectional view;
Fig. 8 is the structural representation of the utility model at neutral gear;
Fig. 9 is the structural representation of the utility model in engage a gear process;
In figure: the hollow shift shaft of 1-; Axle in 2-gear shift; Axle shifting block in 3-; 4-starts pin; 5-limit structure hole; 6-straight trough; 7-contact area.
Embodiment
Noun explanation in the utility model:
The tapering in limit structure hole: relatively start in limit structure hole on the interior collar extension of pin the same side and get respectively a bit, these 2 apart from the hole heart farthest, by its line, the angle in the middle of line and limit structure hole between bisector is tapering.
The maximum angle that startup pin rotates: dead in line place of selling using middle bisector and the startup in limit structure hole, as initial position, starts the maximum angle that pin can rotate to both sides.
Below in conjunction with accompanying drawing, the utility model is described in further details:
With reference to 6, to Fig. 8, the utility model comprises from inside to outside axle 2, hollow shift shaft 1 and interior axle shifting block 3 in the gearshift of socket successively; Interior axle shifting block 3 is fixed on the interior axle 2 of gearshift by columniform startup pin 4, and three is secure fit and can rotates relative to hollow shift shaft 1; On hollow shift shaft 1, be provided for connecting the straight trough 6 of booster outer shaft shifting block.
On hollow shift shaft 1, limit structure hole 5 is set, starts pin 4 through limit structure hole 5; And the direction of rotating along axle in gear shift 2, starts between pin 4 and limit structure hole 5 gap is set, and gap is radially increased gradually and forms tapering to outer surface by internal surface along hollow shift shaft 1.Limit structure hole 5 is quadrant, its two ends are and start pin 4 semi-cylindrical recesses that coordinate, two semi-cylindrical recesses radiuses are equal to the radius that starts pin 4, the half and the groove that start the rear outer surface of pin 4 rotation are fitted completely, the contact area 7 starting between pin 4 and limit structure hole 5 is face contact, and area of contact reaches maximum; Between two groove center of circle lines, form angle, the angle of angle equals to start pin 4 maximum angles that rotate relative to hollow shift shaft 1; The tapering in limit structure hole 5 is the angle between semi-cylindrical recesses outermost bus and the middle bisector in limit structure hole 5, and the tapering in limit structure hole 5 equals to start pin 4 maximum angles that rotate relative to hollow shift shaft 1.Distance between the covering of the fan of quadrant both sides equals to start the radius of pin 4, ensure to start pin 4 left-right rotation only in limit structure hole 5, ensured to start the axially locating of pin 4 on hollow shift shaft 1, avoid the relatively hollow shift shaft 1 of axle shifting block 3 in power-assisted to move axially, the bad connection that may cause interior axle shifting block 3 and booster, causing cannot power-assisted.
Referring to Fig. 8 and Fig. 9, the utility model working principle mainly comprises: in the time of needs gear shift, the interior axle 2 of gear shift rotates under driver's manipulation, drives startup pin 4 and interior axle shifting block 3 to rotate, and interior axle shifting block 3 drives axle in booster to move the power-assisted spool generation power-assisted effect of opening.
Wedge gap between hollow shift shaft 1 and startup pin 4, can ensure that hollow shift shaft is motionless moves without engage a gear before power-assisted produces, and in the time that power-assisted deficiency needs manual assisted gearshift or booster inefficacy to need complete hand shift, sell the hollow shift shaft 1 of 4 promotion by startup and realize, limit structure hole 5 has ensured to start pin 4 and has contacted with the gross area of hollow shift shaft 1.
The tapering in the utility model hollow core shift shaft 1 upper limit structure hole 5 causes that by booster spool opening travel the angle that in gearshift, axle 2 rotates is definite, the diameter of semi-cylindrical recesses is identical with startup pin diameter, gap between two grooves causes that by booster spool opening travel the arc length that in gearshift, axle 2 rotates is definite, so not only ensure to start the axially locating of pin on hollow shift shaft, and while having increased booster work, start the area of contact of pin and hollow shift shaft, thereby ensured hollow shift shaft and the working life that starts pin; Improve hollow shift shaft and start the stressing conditions of selling and increase the working life of hollow shift shaft.
The utility model relative to existing technologies, also has following beneficial effect:
1. improve hollow shift shaft and start the stressing conditions of pin, extend part working life;
2. manufacturing process is simple and feasible;
3. increase the reliability of part, ensured the vehicle rate of attendance.
Claims (7)
1. a power-assisted limit structure, is characterized in that: comprise from inside to outside axle (2), hollow shift shaft (1) and interior axle shifting block (3) in the gearshift of socket successively; Described interior axle shifting block (3) is sold (4) by startup and is fixed on the interior axle (2) of gearshift above, and three can rotate relative to hollow shift shaft (1);
Limit structure hole (5) is set on described hollow shift shaft (1), described startup pin (4) is through limit structure hole (5), and the direction of rotating along axle in gear shift (2), start between pin (4) and limit structure hole (5) gap is set, gap is radially increased gradually and forms tapering to outer surface by internal surface along hollow shift shaft (1), and the tapering of limit structure hole (5) equals to start the maximum angle that pin (4) rotates relative to hollow shift shaft (1).
2. a kind of power-assisted limit structure according to claim 1, is characterized in that: described startup pin (4) is for cylindrical.
3. a kind of power-assisted limit structure according to claim 2, it is characterized in that: described limit structure hole (5) is quadrant, its two ends are the semi-cylindrical recesses coordinating with startup pin (4), between two groove center of circle lines, form angle.
4. a kind of power-assisted limit structure according to claim 3, is characterized in that: described groove radius is equal to the radius that starts pin (4).
5. a kind of power-assisted limit structure according to claim 3, is characterized in that: the distance between the covering of the fan of described quadrant both sides equals to start the radius of pin (4).
6. according to a kind of power-assisted limit structure described in claim 3-5 any one, it is characterized in that: between the semi-cylindrical recesses center of circle line of (5) two, described limit structure hole, the angle of angle equals to start the maximum angle that pin (4) rotates relative to hollow shift shaft (1).
7. according to a kind of power-assisted limit structure described in claim 1-5 any one, it is characterized in that: the straight trough (6) that is provided for connecting booster outer shaft shifting block on described hollow shift shaft (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420320058.XU CN203926730U (en) | 2014-06-16 | 2014-06-16 | A kind of power-assisted limit structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420320058.XU CN203926730U (en) | 2014-06-16 | 2014-06-16 | A kind of power-assisted limit structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203926730U true CN203926730U (en) | 2014-11-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420320058.XU Active CN203926730U (en) | 2014-06-16 | 2014-06-16 | A kind of power-assisted limit structure |
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| Country | Link |
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| CN (1) | CN203926730U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107420537A (en) * | 2017-07-31 | 2017-12-01 | 东风商用车有限公司 | A kind of gearbox selector gearshift of built-in power assisted gearshift device |
| CN115182992A (en) * | 2022-06-20 | 2022-10-14 | 陕西法士特齿轮有限责任公司 | Gear engaging assisting structure for adjusting transmission |
-
2014
- 2014-06-16 CN CN201420320058.XU patent/CN203926730U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107420537A (en) * | 2017-07-31 | 2017-12-01 | 东风商用车有限公司 | A kind of gearbox selector gearshift of built-in power assisted gearshift device |
| CN115182992A (en) * | 2022-06-20 | 2022-10-14 | 陕西法士特齿轮有限责任公司 | Gear engaging assisting structure for adjusting transmission |
| CN115182992B (en) * | 2022-06-20 | 2023-11-07 | 陕西法士特齿轮有限责任公司 | Gear-engaging power assisting structure of adjusting transmission |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |