CN201405678Y - Automobile overhead front driving axle - Google Patents
Automobile overhead front driving axle Download PDFInfo
- Publication number
- CN201405678Y CN201405678Y CN200920138503XU CN200920138503U CN201405678Y CN 201405678 Y CN201405678 Y CN 201405678Y CN 200920138503X U CN200920138503X U CN 200920138503XU CN 200920138503 U CN200920138503 U CN 200920138503U CN 201405678 Y CN201405678 Y CN 201405678Y
- Authority
- CN
- China
- Prior art keywords
- miniature gears
- connector
- serrate slot
- axle
- radial teeth
- 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 - Lifetime
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- Gears, Cams (AREA)
Abstract
An automobile overhead driving axle relates to an automobile front axle structure; and the front axle structure comprises a front driving axle deceleration assembly, an axle housing, an inner half axle, an outer half axle, a cross axle, an overhead gearbox body and a wheel hub. The automobile overhead driving axle is characterized in that the outer half axle comprises a split-type pinion wheel anda connector; stepped cylinders at two ends of the pinion wheel are sleeved with two bearings fixed on the overhead gearbox body to realize the positioning purpose; a plurality of radial tooth-shapedgrooves are uniformly distributed on the end surface inside the pinion wheel; the connector adopts the structure that a cylindrical lug boss extends out from the outside of a longitudinal body; a plurality of radial teeth corresponding to a plurality of tooth-shaped grooves on the end surface inside the pinion wheel are uniformly distributed on the end surface of the cylindrical lug boss; and thepinion wheel and the connector are in threaded connection through that the radial teeth are inserted into tooth-shaped grooves and a bolt penetrates through a central hole of the pinion wheel. The utility model has the advantage that the split-type outer half axle implements the butting structure between the radial teeth and tooth-shaped grooves, which provides sufficient design space for shortening the tooth width of the pinion wheel and reducing the excircle diameter of the gear.
Description
Technical field:
The utility model relates to automobile front axle structure, particularly automobile overhead driving front axle.
Prior art:
Need automobile front and back bridge overhead for rugged hill path, the soft road of earth, can't exercise in order to avoid the front and back bridge touches the road surface.Bridge is overhead before and after needing, and promptly bridge intermediate solid drive shaft axial line is higher than the wheel hub line of centers, has raised the axle housing terrain clearance comparatively speaking.For four-wheel drive car, back bridge construction is simple relatively, the back axle horizontal drive shaft does not directly dock with wheel hub, as long as the transmission gear engagement enforcement transmission of in the terminal gear of socket of back axle horizontal drive shaft and wheel hub, setting up, and the rise height of engaging gear width between centers to be exactly overpass raise axle housing.And propons has steering structure, and its transmission is divided into inner shaft, outer semiaxis, finish universal-joint by center cross between the inside and outside semiaxis and connect, so after being designed to elevated structure, outer semiaxis outside axle head must be realized meshing with the gear wheel transmission by the socket gear.Outer semiaxis is made up of outer axis body and connector, the connector structure is a vertical body and vertical body two ends two weft elements that side direction extends in level, and respectively be provided with medium pore on the weft element, and two medium pores are realized being connected with the center cross fit, and vertical external side is extended an outer axis body.Be connected and fixed a miniature gears by key on the outer axis body of connector, big gear wheel fixing on this miniature gears and the hub spindle realizes engaged transmission, each cover unification bearing of miniature gears two ends, and two bearings cylindrical fixed cover is on the overpass gear housing.
There is following defective in the such structure of prior art: at first, it is the smaller the better that outer semiaxis and wheel hub are connected the horizontal direction space length, because distance is big, stability of automobile is bad, therefore require the wheel facewidth on outer semiaxis miniature gears and the wheel hub the smaller the better, structure is compact as far as possible.Secondly, under big or small gear tooth width required to try one's best little situation, the number of teeth, modulus were satisfying under the driving torque prerequisite, and big or small top circle is also as far as possible little, and the overpass gear housing just can be little like this, and structure just can be compact.They are three years old, the miniature gears volume is as far as possible little, but miniature gears is to be connected by key with the outer axis body of outer semiaxis, no matter be singly-bound or spline form, all is a difficult designing requirement for miniature gears medium pore cylindrical to the size radial wall thickness between the tooth root circle, because radial wall thickness is more little, it is more little to satisfy the miniature gears cylindrical, and must set up keyway on the radial wall thickness, this keyway has weakened the intensity of radial wall thickness, impassabitity lengthening facewidth connection length satisfies again simultaneously, because the facewidth is big more, stability of automobile is poor more.In view of above 3 requirements and contradiction, must there be a structure not only compact but also can satisfy the space connection structure that transmission of torque requires.
Summary of the invention:
The objective of the invention is to overcome above-mentioned defective, a kind of automobile overhead driving front axle is provided.
The solution of the present invention is: outer semiaxis is made up of miniature gears, the connector of split; It is characterized in that: two bearings that miniature gears two ends step cylinder is socketed on fixing and the elevated gearbox are realized the location, and miniature gears is provided with medium pore, and the miniature gears inner side end is uniform a plurality of radially serrate slot, and the serrate slot cross-sectional plane is for falling echelon form; The connector structure is that vertical external side is extended a cylinder boss, the cylinder boss end face is a plurality of uniform a plurality of radial teeth corresponding to miniature gears inner side end serrate slot, this radial teeth cross section is an echelon form, its profile of tooth is identical with miniature gears profile of tooth groove, and when satisfying radial teeth and inserting the serrate slot closed contact, radial teeth tooth top and serrate slot bottom land still have little gap, and connector cylinder boss central authorities are provided with internal thread through hole; Miniature gears and connector are connected to after radial teeth is closely inserted serrate slot, have a bolt to pass the miniature gears medium pore, and bolt front end outside thread is implemented to be threaded with the central negative thread of connector.
The invention has the advantages that: radial teeth and serrate slot docking structure are implemented in outer semiaxis split, for the facewidth of miniature gears shortens, the top circle reduced provides sufficient design spacing, the profile of tooth butt joint can make the butt joint radius be extended to the pinion gear teeth root radius, connect radius much larger than key, therefore transmit equal moment, the miniature gears excircle dimension can be much smaller.Satisfying under the equal moment transmission requirement the compact requirement of elevated drive front axle outside drive mechanism, volume-diminished.
Description of drawings:
Fig. 1 is the utility model structural representation.
Fig. 2 is outer semiaxis connector structural representation.
Fig. 3 is the right elevation of Fig. 2.
Fig. 4 is outer semiaxis connector profile of tooth enlarged drawing.
Fig. 5 is an arc tooth connector scheme drawing.
The specific embodiment
The utility model structure is made up of driving front axle deceleration assembly, axle housing (1), inner shaft (2), outer semiaxis, center cross, elevated gearbox, wheel hub (7), and it is characterized in that: outer semiaxis is made up of miniature gears (4), the connector (3) of split; Two bearings that miniature gears (4) two ends step cylinder is socketed on fixing and the elevated gearbox are realized the location, and miniature gears (4) is provided with medium pore, and miniature gears (4) inner side end is uniform a plurality of radially serrate slot, and the serrate slot cross-sectional plane is for falling echelon form; Connector (3) structure is that vertical external side is extended a cylinder boss, the cylinder boss end face is a plurality of corresponding to the uniform a plurality of radial teeth of miniature gears (4) inner side end serrate slot, this radial teeth cross section is an echelon form, its profile of tooth is identical with miniature gears (4) serrate slot, and when satisfying radial teeth and inserting the serrate slot closed contact, radial teeth tooth top and serrate slot bottom land still have little gap, and connector (3) cylinder boss central authorities are provided with internal thread through hole; Miniature gears (4) is connected to after radial teeth is closely inserted serrate slot with connector (3), has a bolt (6) to pass miniature gears (4) medium pore, and bolt (6) front end outside thread is implemented to be threaded with the central negative thread of connector (3).
Miniature gears (4) serrate slot is the identical straight shape groove of groove cross sectional shape, and the radial teeth cross section of connector (3) is the straight shape tooth corresponding to miniature gears (4) serrate slot shape.
Miniature gears (4) serrate slot is that groove is the identical deep-slotted chip breaker of cross sectional shape, and the radial teeth cross section of connector (3) is the arc tooth corresponding to miniature gears (4) serrate slot shape.
The arc tooth connects makes miniature gears (4) and connector (3) axial line right alignment more accurate.
During installation, earlier miniature gears (4) medial extremity bearing is inserted in miniature gears (4) medial extremity step cylinder, make miniature gears (4) and wheel hub (7) go up fixing big gear wheel (5) engagement, then use bolt (6) to pass miniature gears (4) medium pore after the front end thread lock on connector (3) medium pore negative thread, realized fixing with outer semiaxis disjunctor.
Many a pair of gear transmissions between the outer semiaxis of elevated drive front axle and the wheel hub (7), thereby wheel hub (7) rotation break-in.Therefore must rotate break-in at deceleration assembly middle gear output shaft, or in automobile transfer transmission gearbox, increase transition change gear realization break-in transmission.
Claims (3)
1, a kind of overhead automobile drive axle, be made up of driving front axle deceleration assembly, axle housing (1), inner shaft (2), outer semiaxis, center cross, elevated gearbox, wheel hub (7), it is characterized in that: outer semiaxis is made up of miniature gears (4), the connector (3) of split; Two bearings that miniature gears (4) two ends step cylinder is socketed on fixing and the elevated gearbox are realized the location, and miniature gears (4) is provided with medium pore, and miniature gears (4) inner side end is uniform a plurality of radially serrate slot, and the serrate slot cross-sectional plane is for falling echelon form; Connector (3) structure is that vertical external side is extended a cylinder boss, the cylinder boss end face is a plurality of corresponding to the uniform a plurality of radial teeth of miniature gears (4) inner side end serrate slot, this radial teeth cross section is an echelon form, its profile of tooth is identical with miniature gears (4) serrate slot, and when satisfying radial teeth and inserting the serrate slot closed contact, radial teeth tooth top and serrate slot bottom land still have little gap, and connector (3) cylinder boss central authorities are provided with internal thread through hole; Miniature gears (4) is connected to after radial teeth is closely inserted serrate slot with connector (3), has a bolt (6) to pass miniature gears (4) medium pore, and bolt (6) front end outside thread is implemented to be threaded with the central negative thread of connector (3).
2, a kind of overhead automobile drive axle according to claim 1 is characterized in that miniature gears (4) serrate slot is the identical straight shape groove of groove cross sectional shape, and the radial teeth cross section of connector (3) is the straight shape tooth corresponding to miniature gears (4) serrate slot shape.
3, a kind of overhead automobile drive axle according to claim 1 is characterized in that miniature gears (4) serrate slot is that groove is the identical deep-slotted chip breaker of cross sectional shape, and the radial teeth cross section of connector (3) is the arc tooth corresponding to miniature gears (4) serrate slot shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920138503XU CN201405678Y (en) | 2009-05-31 | 2009-05-31 | Automobile overhead front driving axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920138503XU CN201405678Y (en) | 2009-05-31 | 2009-05-31 | Automobile overhead front driving axle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201405678Y true CN201405678Y (en) | 2010-02-17 |
Family
ID=41676605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920138503XU Expired - Lifetime CN201405678Y (en) | 2009-05-31 | 2009-05-31 | Automobile overhead front driving axle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201405678Y (en) |
-
2009
- 2009-05-31 CN CN200920138503XU patent/CN201405678Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100217 Effective date of abandoning: 20090531 |