CN109139876B - Differential mechanism of hybrid electric vehicle - Google Patents
Differential mechanism of hybrid electric vehicle Download PDFInfo
- Publication number
- CN109139876B CN109139876B CN201810950615.9A CN201810950615A CN109139876B CN 109139876 B CN109139876 B CN 109139876B CN 201810950615 A CN201810950615 A CN 201810950615A CN 109139876 B CN109139876 B CN 109139876B
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- CN
- China
- Prior art keywords
- gear
- gasket
- shaft
- cavity
- shaft hole
- 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.)
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Links
- 238000000034 method Methods 0.000 abstract description 7
- 238000006073 displacement reaction Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/037—Gearboxes for accommodating differential gearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H2057/0093—Means or measures for transport, shipping or packaging
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H2057/02039—Gearboxes for particular applications
- F16H2057/02043—Gearboxes for particular applications for vehicle transmissions
Abstract
The invention discloses a hybrid electric vehicle differential mechanism, which comprises a shell, wherein a cavity is arranged in the shell, a first half shaft gear and a second half shaft gear are respectively arranged at two ends of the cavity, limiting bosses are symmetrically arranged at two sides of one end surface of the cavity, the first half shaft gear is arranged between the limiting bosses, a first gasket groove is formed in the back surface of the first half shaft gear, a first gasket is connected between the first gasket groove and the surface of the cavity, the thickness of the first gasket is larger than the depth of the first gasket groove, and the sum of the depth of the first gasket groove and the height of the limiting boss is larger than the thickness of the first gasket. According to the invention, the limiting groove is formed in the surface of the cavity of the shell, the first half shaft gear is arranged in the limiting groove, and the limiting groove is used for limiting the first half shaft gear, so that the first half shaft gear and the second half shaft gear are prevented from shifting due to vibration generated in the transportation process, and collision with other parts is avoided.
Description
Technical Field
The invention relates to an automobile differential mechanism, in particular to a hybrid automobile differential mechanism.
Background
An automotive differential is a mechanism that enables left and right (or front and rear) drive wheels to rotate at different rotational speeds. The automobile differential is mainly composed of left and right half shaft gears, two planetary gears and a shell. The position of the left and right side gears is not limited before the existing differential mechanism is mounted on a vehicle, and the differential mechanism is in a transportation process, so that the left and right side gears frequently collide with other parts due to displacement of the left and right side gears caused by vibration, and the parts are damaged by collision or the precision of the parts is reduced due to collision.
Disclosure of Invention
The invention aims to solve the problem that the half-axle gear is easy to move and collide with other parts in the transportation process of the existing differential mechanism, and provides a hybrid electric vehicle differential mechanism which can solve the problem that the half-axle gear collides with other parts in the transportation process.
The invention aims at realizing the following technical scheme: the utility model provides a hybrid vehicle differential mechanism, includes the casing, be provided with the cavity in the casing, the cavity both ends are provided with first semi-axis gear and second semi-axis gear respectively, one of them one end surface bilateral symmetry of cavity is provided with spacing boss, first semi-axis gear sets up between spacing boss, the back of first semi-axis gear is provided with first gasket recess, be connected with first gasket between first gasket recess and the cavity surface, the thickness of first gasket is greater than the degree of depth of first gasket recess, the degree of depth of first gasket recess is greater than the thickness of first gasket with the high sum of spacing boss.
A cavity is provided in the housing for mounting the first side gear, the second side gear and other gear assemblies. The first gasket groove is used for placing the first gasket, the position of the first gasket is limited in the range of the first gasket groove, and the first gasket is prevented from being separated. The first spacer is used for reducing friction between the first half-shaft gear and the surface of the cavity when rotating. The thickness of the first gasket is greater than the depth of the first gasket groove, so that when the first gasket is installed in the first gasket groove, the first gasket is locally higher than the surface of the first half shaft gear, and therefore when the first half shaft gear is connected between the limiting bosses, the back surface of the first half shaft gear is not in direct contact with the surface between the limiting bosses, friction force of the first half shaft gear during rotation is reduced, and abrasion to the surface of the first half shaft gear is reduced. Because the sum of the depth of the first gasket groove and the height of the limiting boss is greater than the thickness of the first gasket, the height of the limiting boss is greater than the distance from the back surface of the first half-shaft gear to the bottom surface of the limiting groove, and the limiting boss blocks the first half-shaft gear in the area between the two limiting bosses, so that the movement of the first half-shaft gear is limited. Since the position of the first side gear is restricted, the position of the second side gear is also restricted according to the internal structure of the differential, thereby avoiding the collision of the first and second side gears with other parts due to vibration during transportation.
Preferably, a second gasket groove is formed in the back face of the second side gear, a second gasket is arranged between the second side gear and the surface of the cavity, and the thickness of the second gasket is larger than the depth of the second gasket groove.
Preferably, a circular through hole for enabling the half shaft to pass through is arranged between the first gasket and the second gasket.
Preferably, the distance between the limiting bosses is larger than the diameter of the first half-shaft gear.
Preferably, the two ends of the shell are respectively provided with a first half shaft hole and a second half shaft hole which are coaxially arranged, the central axes of the first half shaft hole and the second half shaft hole penetrate through the center of the cavity, the two sides of the shell are provided with a first gear shaft hole and a second gear shaft hole which are coaxially arranged, the central axes of the first gear shaft hole and the second gear shaft hole are perpendicular to the central axes of the first half shaft hole and the second half shaft hole, the first gear shaft hole and the second gear shaft hole are connected with a planetary gear shaft, planetary gears capable of rotating around the planetary gear shaft are symmetrically arranged on the two sides of the planetary gear shaft, and the planetary gears are meshed with the first half shaft gear and the second half shaft gear simultaneously. The half shaft passes through the first half shaft hole or the second half shaft hole and is connected with the first half shaft gear or the second half shaft gear. The first gear shaft hole and the second gear shaft hole are used for connecting a planetary gear shaft. The planetary gear shaft is used for connecting a planetary gear.
Preferably, the connecting line direction between the limit bosses is perpendicular to the planetary gear shaft.
Preferably, a central hole for connecting the half shafts is arranged between the first half shaft gear and the second half shaft gear, and an inner surface of the central hole is provided with an inner spline. When the half shaft is connected with the first half shaft gear or the second half shaft gear, the connection is realized through the matching of the external spline arranged on the half shaft and the internal spline arranged on the central hole.
Preferably, the bottom surface of the first gasket groove is an arc surface protruding outwards, and the surface between the limiting bosses is an arc surface recessed inwards.
Preferably, one side surface of the first gasket is an arc surface protruding outwards and is matched with the surface between the limiting boss, and the other side surface of the first gasket is an arc surface recessed inwards and is matched with the bottom surface of the first gasket groove.
The beneficial effects of the invention are as follows: according to the invention, the limiting boss is arranged on the surface of the cavity of the shell, the first half shaft gear is arranged in the limiting groove, and the first half shaft gear is limited through the limiting boss, so that the first half shaft gear and the second half shaft gear are prevented from shifting due to vibration generated in the transportation process, and collision with other parts is avoided.
Drawings
Fig. 1 is a cross-sectional view of the structure of the present invention.
Fig. 2 is a schematic view of a housing structure.
Fig. 3 is an enlarged view of a portion a in fig. 1.
Fig. 4 is an enlarged view of a portion B in fig. 1.
Fig. 5 is a schematic diagram of a first half-shaft gear structure.
Fig. 6 is a sectional view in the direction C of fig. 5.
Fig. 7 is an enlarged view of the portion D in fig. 6.
In the figure: 1. the planetary gear comprises a shell, 2, a first gasket, 3, a first half-shaft gear, 4, a second half-shaft gear, 5, a second gasket, 6, a planetary gear shaft, 7 and a planetary gear.
Detailed Description
The invention is further described below by means of specific embodiments in connection with the accompanying drawings.
As shown in fig. 1 to 7, a differential for a hybrid vehicle includes a housing 1. The housing 1 is internally provided with a spherical cavity for mounting a gear assembly. The shell 1 is provided with a first half shaft hole and a second half shaft hole which can enable the half shaft to pass through. The first half axle hole and the second half axle hole are respectively positioned at two axial ends of the cavity and are communicated with the cavity. The first shaft hole and the second shaft hole are coaxially arranged. The central axes of the first shaft hole and the second shaft hole pass through the center of the cavity. The first axle hole is located at the left end of the cavity (according to the left-right positional relationship in fig. 1), and the second axle hole is located at the right end of the cavity. The two sides of the shell 1 are symmetrically provided with a first gear shaft hole and a second gear shaft hole. The first gear shaft hole and the second gear shaft hole are coaxially arranged. The central axes of the first gear shaft hole and the second gear shaft hole pass through the center of the cavity. The central axes of the first half shaft hole and the second half shaft hole are perpendicular to the central axes of the first gear shaft hole and the second gear shaft hole. The two sides of the shell 1 are symmetrically provided with slotting structures.
The inner wall of the left end and the surface of the right end of the cavity are arc surfaces which are concave inwards. The first half shaft hole is positioned in the middle of the inner wall of the left end, and the second half shaft hole is positioned in the middle of the inner wall of the right end. And a limiting boss is arranged on the surface of the left end of the cavity. The limit bosses are arranged in two. The limiting bosses are symmetrically arranged on two sides of the left end surface of the cavity respectively. And a limiting area is formed between the two limiting bosses.
The gear assembly comprises a first side gear 3, a second side gear 4 and planet gears 6. The first side gear 3 is arranged at the left end of the cavity, and the second side gear 4 is arranged at the right end of the cavity. In this embodiment, the first side gear 3 and the second side gear 4 are identical in structure. One side of each of the first side gear and the second side gear is a bevel gear. And the front surfaces of the first half shaft gear and the second half shaft gear are respectively provided with a bevel gear structure. The back surfaces of the first side gear 3 and the second side gear 4 are both convex outwards. And a central hole connected with the half shaft is formed in the middle of the first half shaft gear and the second half shaft gear, and an internal spline is arranged on the inner wall of the central hole. The center of the back surface of the first side gear 3 is provided with a first gasket groove, and the back surface of the second side gear 4 is provided with a second gasket groove. The first gasket groove and the second gasket groove are both circular. The bottoms of the first gasket groove and the second gasket groove are arc surfaces protruding outwards. The side face of the first gasket groove is a first limiting face, and the side face of the second gasket groove is a second limiting face. The diameter of the edge of the back surface of the first half shaft gear 3 is smaller than the distance between the two limiting bosses.
The center hole on the first side gear 3 is arranged coaxially with the first side gear hole, and the center hole on the second side gear 4 is arranged coaxially with the second side gear hole. The first half shaft gear 3 is arranged between the two limiting bosses. A first gasket 2 is arranged between the first side gear 3 and the left end surface of the cavity, and a second gasket 5 is arranged between the second side gear and the right end surface of the cavity. The first gasket 2 is arranged in a first gasket groove on the first side gear 3, and the second gasket 5 is arranged in a second gasket groove on the second side gear 4. The first gasket 2 is circular. The surfaces of the two sides of the first gasket 2 are arc surfaces. The surface of one side of the first gasket 2 is an outwards protruding arc surface, and the surface is matched with the surface between the limiting bosses. The other side surface of the first gasket 2 is an inward concave arc surface, and the surface is matched with the bottom surface of the first gasket groove. A through hole for allowing the half shaft to pass through is arranged in the middle of the first gasket 2. The edge diameter of the first gasket 2 is smaller than the edge diameter of the first gasket groove. The thickness of the first gasket 2 is larger than the depth of the first gasket groove. The inward concave surface of the first gasket 2 is in contact with the bottom surface of the first gasket groove. The surface of the first gasket 2 protruding outwards is in contact with the surface between the limit bosses. The sum of the height of the limit boss and the depth of the first gasket groove is larger than the thickness of the first gasket.
The second side gear 4 is disposed at the right end of the cavity. The center hole on the second side gear 4 is arranged coaxially with the second side hole. The second gasket 5 has the same structure as the first gasket 2. The arc surface of the inner recess is contacted with the bottom surface of the second gasket groove. The arc surface of the second gasket 5 protruding outwards is matched with the right end surface of the cavity and is contacted with the surface.
The housing 1 is provided with a planetary gear shaft 6. The cross section of the planetary gear shaft 6 is circular. The two ends of the planetary gear shaft 6 are respectively fixed on the first shaft hole and the second shaft hole. The planetary gear shaft 6 is connected with a planetary gear 7. The planetary gears 7 are bevel gears. The planetary gears 7 are provided in total in two. The planetary gears 7 are respectively arranged at both sides of the planetary gear shaft and are rotatably connected to the planetary gear shaft 6. The planetary gears 7 are rotatable around the planetary gear shafts 6. Both planetary gears 7 mesh with the first side gear 3 and the second side gear 4 at the same time. The connecting line direction between the limiting bosses is perpendicular to the planetary gear shaft 6.
The first side gear 3 and the second side gear 4 are respectively connected with half shafts on the automobile. When in connection, the half shafts are respectively inserted into the central holes of the first half shaft gear and the second half shaft gear, and the external splines on the half shafts are matched with the internal splines on the central holes. The first side gear and the second side gear are connected through a planetary gear. The first gasket is arranged between the first half-shaft gear and the shell, so that friction force between the first half-shaft gear and the shell can be reduced. The second spacer is disposed between the second side gear and the housing, and can reduce friction between the second side gear and the housing. The first gasket is arranged in the first gasket groove, and the first gasket groove plays a limiting role on the first gasket. The distance from the back surface of the first half-shaft gear to the surface between the limiting bosses is smaller than the height of the limiting bosses, so that the first half-shaft gear is limited in the range between the limiting bosses, and displacement of the first half-shaft gear due to vibration in the transportation process is avoided. Because the first side gear and the second side gear are connected through the planetary gears, a certain position relationship is formed between the first side gear and the second side gear, and the position of the second side gear is correspondingly limited because the position of the first side gear is limited, so that the second side gear is prevented from shifting in the transportation process.
The above embodiments are illustrative of the present invention, and not limiting, and any simple modified structure of the present invention falls within the scope of the present invention.
Claims (6)
1. The utility model provides a hybrid vehicle differential mechanism which characterized in that: the novel half-shaft gear comprises a shell (1), wherein a cavity is formed in the shell (1), a first half-shaft gear (3) and a second half-shaft gear (4) are respectively arranged at two ends of the cavity, limiting bosses are symmetrically arranged on two sides of one end surface of the cavity, the first half-shaft gear (3) is arranged between the limiting bosses, a first gasket groove is formed in the back surface of the first half-shaft gear (3), a first gasket (2) is connected between the first gasket groove and the surface of the cavity, the thickness of the first gasket (2) is larger than the depth of the first gasket groove, and the sum of the depth of the first gasket groove and the height of the limiting boss is larger than the thickness of the first gasket (2);
the bottom surface of the first gasket groove is an arc surface protruding outwards, the surface between the limiting bosses is an arc surface recessed inwards, and the edge diameter of the first gasket (2) is smaller than that of the first gasket groove;
a second gasket groove is formed in the back face of the second half-shaft gear (4), a second gasket (5) is arranged between the second half-shaft gear (4) and the surface of the cavity, and the thickness of the second gasket (5) is larger than the depth of the second gasket groove;
the distance between the limiting bosses is larger than the diameter of the first half-shaft gear (3).
2. A hybrid vehicle differential according to claim 1, characterized in that a circular through hole is provided between the first (2) and second (5) pads, through which the half axle passes.
3. The differential mechanism of a hybrid vehicle according to claim 1, wherein the two ends of the housing (1) are respectively provided with a first half shaft hole and a second half shaft hole which are coaxially arranged, the central axes of the first half shaft hole and the second half shaft hole pass through the center of the cavity, the two sides of the housing (1) are provided with a first gear shaft hole and a second gear shaft hole which are coaxially arranged, the central axes of the first gear shaft hole and the second gear shaft hole are perpendicular to the central axes of the first half shaft hole and the second half shaft hole, the first gear shaft hole and the second gear shaft hole are connected with a planetary gear shaft (6), planetary gears (7) which can rotate around the planetary gear shaft (6) are symmetrically arranged on the two sides of the planetary gear shaft (6), and the planetary gears (7) are meshed with the first half shaft gear and the second half shaft gear at the same time.
4. A hybrid vehicle differential according to claim 3, characterized in that the direction of the connection between the limit cams is perpendicular to the planet shafts (6).
5. A hybrid vehicle differential according to claim 1, characterized in that the first side gear (3) and the second side gear (4) are provided with a central hole in between for connecting the half shafts, the inner surface of the central hole being provided with internal splines.
6. The differential mechanism of a hybrid vehicle according to claim 1, wherein one side surface of the first gasket (2) is an arc surface protruding outwards and is matched with the surface between the limiting boss, and the other side surface of the first gasket (2) is an arc surface recessed inwards and is matched with the bottom surface of the first gasket groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810950615.9A CN109139876B (en) | 2018-08-20 | 2018-08-20 | Differential mechanism of hybrid electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810950615.9A CN109139876B (en) | 2018-08-20 | 2018-08-20 | Differential mechanism of hybrid electric vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109139876A CN109139876A (en) | 2019-01-04 |
| CN109139876B true CN109139876B (en) | 2024-02-09 |
Family
ID=64790249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810950615.9A Active CN109139876B (en) | 2018-08-20 | 2018-08-20 | Differential mechanism of hybrid electric vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109139876B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113607675A (en) * | 2021-06-18 | 2021-11-05 | 洛阳双瑞万基钛业有限公司 | Sample pool and detection system for online detection of impurities in titanium tetrachloride |
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| Publication number | Publication date |
|---|---|
| CN109139876A (en) | 2019-01-04 |
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