CN2797777Y - Axial slider cam type differential mechanism - Google Patents
Axial slider cam type differential mechanism Download PDFInfo
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- CN2797777Y CN2797777Y CNU2005200834353U CN200520083435U CN2797777Y CN 2797777 Y CN2797777 Y CN 2797777Y CN U2005200834353 U CNU2005200834353 U CN U2005200834353U CN 200520083435 U CN200520083435 U CN 200520083435U CN 2797777 Y CN2797777 Y CN 2797777Y
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- differential
- slide block
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- spider gear
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Abstract
The utility model provides a cam type differential mechanism of an axial sliding block, which comprises a casing, spider gears and sliding blocks. The utility model is characterized in that a plurality of axial grooves are uniformly distributed on the inner wall of the cylindrical casing, the two same spider gears are installed in the casing in the opposite direction, and shaft holes are processed on the middle of each spider gear; a plurality of same convex peaks are uniformly distributed on the front end surface of each spider gear along the circumferential direction to form a cam of an end surface. The sliding blocks which are installed between the two spider gears are divided into two kinds, and protrusions which are matched with the axial grooves are respectively arranged on the back surface of each kind of the sliding block; a small convex peak which is matched with the convex peak is respectively arranged on the left end and the right end of each sliding block, the left small convex peak and the right small convex peak respectively deviate from the longitudinal center line of each sliding block synchronously, the deviating direction is opposite, and the deviating direction of the small convex peaks of the two kinds of sliding blocks is opposite; two kinds of sliding blocks with opposite deviating direction of the small convex peaks are arranged in the casing, and the protrusions on the back surface of each sliding block slide up and down in the axial grooves; a disk spring and a shim are arranged between the back surface of one spider gear and the casing. The utility model has the advantages of small radial dimension, simple structure and stable performance.
Description
Affiliated technical field
The utility model provides a kind of axial slider cammingly differential mechanism, belongs to the Vehicle Engineering technical field.
Background technique
Existing slider cam formula differential mechanism has higher friction moment, be adapted to the various off-road vehicles that on the bad road surface of being everlasting, travel, mainly form by differential carrier (the main transmission cover of holding concurrently), interior external cam and slide block etc., wherein interior external cam adopts spline to be connected with left and right sides semiaxis respectively, and slide block can radially slide by the slotted eye along the main transmission cover between interior external cam, therefore is referred to as radial slider cammingly differential mechanism again.
When the automobile straight-line travelling, external cam was rotated together in the main transmission cover drove by slide block, and this moment, two side drive wheel rotating speeds were identical; During automobile turning, because two side drive wheel rotating speed differences, the slide block one side is with the rotation of main transmission cover, and the inside and outside cam rotation of drive, also radially slides along slotted eye between interior external cam simultaneously, and assurance both sides wheel is realized differential under the situation that does not break away from transmission.Because the friction torque between slide block and interior external cam is bigger, make on the driving wheel of slow-speed to obtain than the bigger torque of fast commentaries on classics driving wheel.
The locking coefficient K of slider cam formula differential mechanism is relevant with the friction factor and the inclination angle of cam face, is generally 0.5～0.7, torque ratio K
bCan reach 3～6.And, therefore can improve the passing ability of vehicle to a great extent because volume is less.But the slide block of this differential mechanism needs to slide in the radially slotted eye of main transmission cover, so its footpath size can not be too little.In addition, also there are problems such as complex structure, main transmission cover manufacturability difference in this differential mechanism.
In recent years, along with the fast development of national economy and the enforcement of strategy to develop western regions, the owning amount of various go-anywhere vehicles and engineering vehicle was increasing.But, learn that by above-mentioned analysis currently used various high friction antiskid differential mechanisms all exist in various degree volume big (referring to radial dimension), complex structure and other problems.And go-anywhere vehicle often all requires to have higher passing ability, and this just requires as much as possible to reduce the radial dimension of differential mechanism.Therefore, each automobile production producer press for that a kind of locking coefficient is big, radial dimension is little, the differential mechanism of simple in structure, stable performance.
The model utility content
The purpose of this utility model provides and a kind ofly can overcome above-mentioned defective, the higher novel differential mechanism of radial dimension passing ability littler, vehicle.Its technological scheme is:
Comprise housing, spider gear, slide block, it is characterized in that: be evenly equipped with a plurality of identical axial grooves on the cylindrical circular inner walls, the centre is processed with two identical spider gears of axis hole and installs in the housing in opposite directions, the front-end face of each spider gear along the circumferential direction is uniform-distribution with a plurality of protruding peaks and constitutes end cam, each protruding peak equates by pitch, two sections helicoids that rotation direction is opposite are formed, and each helicoid all radially is low inside and high outside heeling condition along spider gear, the slide block that is installed between two spider gears divides two kinds, quantity is the twice of protruding peak number amount, the back side of every kind of slide block is provided with the projection that matches with axial groove, the non-convex portion at the back side is the part of external cylindrical surface, its diameter equates with the diameter of bore of housing, end respectively is provided with a little protruding peak that matches with protruding peak about slide block, a left side, the vertical center line of the equal simultaneous bias slide block in right little protruding peak, and the offset direction is opposite, and the offset direction, little protruding peak of two kinds of slide blocks is opposite, each helicoid that constitutes little protruding peak all in radially being of slide block external cylindrical surface low outside high heeling condition, two kinds of opposite slide blocks of offset direction, little protruding peak are respectively packed in the housing, the projection at the back side can slide up and down in axial groove, the two ends of housing are provided with shoulder hole corresponding to the axis hole of spider gear, between a spider gear back side and housing belleville spring and pad are housed.
Described axial slider cammingly differential mechanism, it is characterized in that: housing comprises differential cover and cylindrical shape differential carrier, wherein an end of differential carrier opens wide, and the differential cover shutoff is at the open end of differential carrier, and the center of the center of differential cover and differential carrier shutoff end is provided with shoulder hole.
Described axial slider cammingly differential mechanism, it is characterized in that: the axis hole at spider gear center is a splined hole, and its back side is processed with oil groove, is convenient to import lubricant oil between the spider gear back side and differential carrier, to have improved the lubrication state between this mating face, reduce its wearing and tearing.
Described axial slider cammingly differential mechanism, it is characterized in that: the periphery of differential carrier and differential cover all is processed with a plurality of connecting hole.
Described axial slider cammingly differential mechanism is characterized in that: each formed angle in slide block bi-side equals 360 ° of quantity divided by slide block.
Described axial slider cammingly differential mechanism is characterized in that: between the differential cover and the adjacent spider gear back side belleville spring and pad are housed.
Its working principle is: this differential mechanism is linked together at a plurality of connecting hole of differential carrier and differential cover periphery and the driven gear of ransaxle main reducing gear by its processing, and input torque; Spider gear connects with left and right sides two-semiaxle by the axis hole of its processing at the center, and the output torque.When the vehicle straight-line travelling, differential carrier is with the torque of main reducing gear driven gear input, driving left and right sides spider gear by slide block rotates together, and pass through two-semiaxle, drive left and right sides driving wheel with identical rotational speed with identical torque, because the helicoid on the spider gear front-end face radially is low inside and high outside heeling condition along spider gear, and the helicoid at slide block two ends hangs down outer high heeling condition in being, the radial component of the two active force forces the external cylindrical surface at the slide block back side to be fitted with the bore area of housing all the time, thereby the convex portion that guarantees the slide block back side is embedded in the axial groove of housing bore area all the time; Work as Ackermann steer angle, because the rotating speed difference that two side drive wheel require, slide block rotates together in company with housing on the one hand, and drive both sides spider gear rotates, on the other hand because the speed discrepancy of both sides spider gear force the helicoid at each slide block two ends to slide along the helicoid on the spider gear front-end face, and backrest face projection embeds in the axial groove of housing all the time, when the companion differential carrier rotates together, also do endwisely slipping with respect to housing.Because the axial pressure effect of belleville spring, the helicoid that makes each slide block two ends all the time with the spider gear front-end face on helicoid fit, thereby guarantee that the both sides wheel realizes differential under the situation that does not break away from transmission.In addition, because the frictional force between slide block and both sides spider gear is bigger, make on the driving wheel of slow-speed to have obtained than the bigger torque of fast commentaries on classics driving wheel.
The utility model is compared with existing high friction differential mechanism, and radial dimension is little, locking coefficient is big, simple in structure, stable performance, has further improved the passing ability of vehicle.
Description of drawings
Fig. 1 is the structural representation that two kinds of slide blocks of the utility model respectively adopt six embodiments;
Fig. 2 is the structural representation that adopts the spider gear embodiment at six protruding peaks in the utility model;
Fig. 3 is a structure schematic representation embodiment illustrated in fig. 2;
Fig. 4 is the structural representation of differential carrier embodiment in the utility model;
Fig. 5 is the structural representation of a kind of form slide block embodiment in the utility model;
Fig. 6 is a structure schematic representation embodiment illustrated in fig. 5;
Fig. 7 is the structural representation of another kind of form slide block embodiment in the utility model.
Specific embodiments
1, belleville spring 2, pad 3, slide block 4, differential carrier 5, spider gear 6, differential cover 7, connecting hole 8, shoulder hole 9, axial groove 10, projection 11, axis hole 12, protruding peak 13, little protruding peak 14, oil groove 15, helicoid 16, side 17, vertical center line
In the embodiment shown in Fig. 1～7, cylindrical shape differential carrier 4 is processed with six connecting hole 7 with differential cover 6 peripheries, one end of differential carrier 4 opens wide, the center of another shutoff end and shutoff are provided with shoulder hole 8 at the center of the differential cover 6 of differential carrier 4 open ends, cylindrical shape differential carrier 4 inner wall even distributions are provided with a plurality of identical axial grooves 9, two identical spider gears 5 that the centre is processed with axis hole 11 are fitted in the housing of differential carrier 4 and differential cover 6 formations in opposite directions, the front-end face of each spider gear 5 along the circumferential direction is uniform-distribution with 6 protruding peaks 12 and constitutes end cam, each protruding peak 12 equates by pitch, two sections helicoids 15 that rotation direction is opposite are formed, and each helicoid all radially is low inside and high outside heeling condition along spider gear 5, the back side of spider gear 5 is processed with oil groove 14, and the axis hole 11 of center processing is a splined hole; Be installed in two kinds of slide blocks 3 minutes between two spider gears 5, quantity is the twice of protruding peak 12 quantity, the back side of every kind of slide block 3 is provided with the projection 10 that matches with axial groove 9, the non-convex portion at the back side is the part of external cylindrical surface, its diameter equates with the diameter of bore of housing, the upper and lower end of slide block 3 respectively is provided with a little protruding peak 13 that matches with protruding peak 12, on, little protruding peak 13 all is offset the vertical center line 17 of slide block 3 down, and the offset direction is opposite, and 13 offset directions, little protruding peak of two kinds of slide blocks 3 are opposite, each helicoid 15 that constitutes little protruding peak 13 all in radially being of slide block 3 external cylindrical surfaces low outside high heeling condition, two kinds of opposite slide blocks 3 of 13 offset directions, little protruding peak are respectively packed in the housing, the projection 10 at the back side can slide up and down in axial groove 9, between the back side of a spider gear 5 and differential cover 6, belleville spring 1 and pad 2 are housed, guarantee that the helicoid 15 at each slide block 3 two ends and the helicoid 15 on the cam front-end face fit all the time.
Claims (6)
1, a kind of axial slider cammingly differential mechanism, comprise housing, spider gear (5), slide block (3), it is characterized in that: be evenly equipped with a plurality of identical axial grooves (9) on the cylindrical circular inner walls, the centre is processed with two identical spider gears (5) of axis hole (11) and installs in the housing in opposite directions, the front-end face of each spider gear (5) along the circumferential direction is uniform-distribution with a plurality of protruding peaks (12) and constitutes end cam, each protruding peak (12) equates by pitch, two sections helicoids (15) that rotation direction is opposite are formed, and each helicoid (15) all radially is low inside and high outside heeling condition along spider gear (5), the slide block (3) that is installed between two spider gears (5) divides two kinds, quantity is the twice of protruding peak (12) quantity, the back side of every kind of slide block (3) is provided with the projection (10) that matches with axial groove (9), the non-convex portion at the back side is the part of external cylindrical surface, its diameter equates with the diameter of bore of housing, end respectively is provided with a little protruding peak (13) that matches with protruding peak (12) about slide block (3), a left side, right little protruding peak (13) is the vertical center line (17) of simultaneous bias slide block (3) all, and the offset direction is opposite, and the offset direction, little protruding peak (13) of two kinds of slide blocks (3) is opposite, each helicoid (15) that constitutes little protruding peak (13) all in radially being of slide block (3) external cylindrical surface low outside high heeling condition, the opposite two kinds of slide blocks (3) in offset direction, little protruding peak (13) are respectively packed in the housing, the projection at the back side (10) can slide up and down in axial groove (9), the two ends of housing are provided with shoulder hole (8) corresponding to the axis hole (11) of spider gear (5), and belleville spring (1) and pad (2) are housed between a spider gear (5) back side and housing.
2, axial slider cammingly differential mechanism as claimed in claim 1, it is characterized in that: housing comprises differential cover (6) and cylindrical shape differential carrier (4), wherein an end of differential carrier (4) opens wide, differential cover (6) shutoff is at the open end of differential carrier (4), and the center of the center of differential cover (6) and differential carrier (4) shutoff end is provided with shoulder hole (8).
3, axial slider cammingly differential mechanism as claimed in claim 1 is characterized in that: the axis hole (11) at spider gear (5) center is a splined hole, and its back side is processed with oil groove (14).
4, axial slider cammingly differential mechanism as claimed in claim 1 is characterized in that: the periphery of differential carrier (4) and differential cover (6) all is processed with a plurality of connecting hole (7).
5, axial slider cammingly differential mechanism as claimed in claim 1 is characterized in that: the formed angle in each slide block (3) bi-side (16) equals 360 ° of quantity divided by slide block (3).
6, axial slider cammingly differential mechanism as claimed in claim 1 is characterized in that: between the differential cover (6) and adjacent spider gear (5) back side belleville spring (1) and pad (2) are housed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200834353U CN2797777Y (en) | 2005-05-19 | 2005-05-19 | Axial slider cam type differential mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200834353U CN2797777Y (en) | 2005-05-19 | 2005-05-19 | Axial slider cam type differential mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2797777Y true CN2797777Y (en) | 2006-07-19 |
Family
ID=36869019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2005200834353U Expired - Fee Related CN2797777Y (en) | 2005-05-19 | 2005-05-19 | Axial slider cam type differential mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2797777Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101498363A (en) * | 2008-01-29 | 2009-08-05 | 伊顿公司 | Differential holdout ring arrangement |
| CN104006136A (en) * | 2014-04-27 | 2014-08-27 | 王红兴 | Inner cam speed governor of spring damping sliding block |
| CN105221701A (en) * | 2015-11-06 | 2016-01-06 | 王梅枝 | A kind of axial cam formula limited-slip differential |
| CN105257801A (en) * | 2015-11-04 | 2016-01-20 | 四川大学 | Pure rolling type automobile differential mechanism |
| CN105443720A (en) * | 2015-12-17 | 2016-03-30 | 长安大学 | Limited slip differential (LSD) shell body of formula of society of automotive engineers (FSAE) racing car transmission system |
-
2005
- 2005-05-19 CN CNU2005200834353U patent/CN2797777Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101498363A (en) * | 2008-01-29 | 2009-08-05 | 伊顿公司 | Differential holdout ring arrangement |
| CN101498363B (en) * | 2008-01-29 | 2013-11-06 | 伊顿公司 | Differential holdout ring arrangement |
| CN104006136A (en) * | 2014-04-27 | 2014-08-27 | 王红兴 | Inner cam speed governor of spring damping sliding block |
| CN105257801A (en) * | 2015-11-04 | 2016-01-20 | 四川大学 | Pure rolling type automobile differential mechanism |
| CN105221701A (en) * | 2015-11-06 | 2016-01-06 | 王梅枝 | A kind of axial cam formula limited-slip differential |
| CN105443720A (en) * | 2015-12-17 | 2016-03-30 | 长安大学 | Limited slip differential (LSD) shell body of formula of society of automotive engineers (FSAE) racing car transmission system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |