CN217898697U - Planetary gear differential mechanism and automobile - Google Patents
Planetary gear differential mechanism and automobile Download PDFInfo
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- CN217898697U CN217898697U CN202221999715.9U CN202221999715U CN217898697U CN 217898697 U CN217898697 U CN 217898697U CN 202221999715 U CN202221999715 U CN 202221999715U CN 217898697 U CN217898697 U CN 217898697U
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Abstract
The utility model provides a planetary gear differential mechanism and an automobile, wherein the planetary gear differential mechanism comprises a shell, two sides in the shell are respectively provided with a first mounting groove for mounting a planetary gear, a first mounting hole which runs through the shell is arranged in the first mounting groove, the top and the bottom in the shell are provided with a second mounting groove for mounting a half axle gear, a second mounting hole which runs through the shell is arranged in the second mounting groove, a first oil guide groove with one end communicated with the first mounting hole is arranged in the first mounting groove, and the other end of the first oil guide groove is communicated with the inner wall of the shell; the casing inner wall is close to first oil guide groove bottom and upwards extrudees and forms and lead the oily muscle, leads the height of oily muscle and highly reduces from being close to first mounting groove one side to opposite side height gradually. The automobile comprises the planetary gear differential. The utility model provides a planetary gear differential mechanism, when the planetary gear differential mechanism who has solved among the prior art is lubricated through the mode of splashing, lubricated lower problem of effect.
Description
Technical Field
The utility model relates to a differential mechanism technical field, in particular to planetary gear differential mechanism.
Background
On a new energy automobile, the rotating speed and the torque can be increased in a very short time due to the driving motor, so that the left and right wheels generate higher differential speed when the automobile runs on a road surface with a lower friction coefficient. For this reason, there is a need to improve the differential capability of the differential to prevent the differential from malfunctioning, i.e., to improve the lubricating effect of the planetary gears of the differential or to improve the anti-seizing capability of the planetary gear shaft surfaces, on the electric vehicle.
The technical scheme who has now usually goes up to planetary gear differential mechanism addition lubricating oil and satisfies planetary gear's in the planetary gear differential mechanism lubrication effect, be equipped with the oilhole on split type planetary gear differential mechanism's the casing and be used for lubricating oil to get into in the differential mechanism, be equipped with the entering that installation window is used for planetary gear's entering and lubricating oil on the planetary gear differential mechanism's of integral type casing, current planetary gear differential mechanism relies on the mode of splashing to lubricate, lubricating oil can splash to each position in the differential mechanism, can't guarantee the lubrication effect between planetary gear axle and the planetary gear, lead to lubricated effect lower.
SUMMERY OF THE UTILITY MODEL
Based on this, the utility model aims at providing a planetary gear differential mechanism aims at solving planetary gear differential mechanism among the prior art when lubricated through the mode of splashing, lubricated lower problem of effect.
The utility model provides a planetary gear differential mechanism, which comprises a shell, wherein, two sides in the shell are respectively provided with a first mounting groove for mounting a planetary gear, a first mounting hole which runs through the shell is arranged in the first mounting groove, the top and the bottom in the shell are provided with a second mounting groove for mounting a half axle gear, a second mounting hole which runs through the shell is arranged in the second mounting groove, a first oil guide groove with one end communicated with the first mounting hole is arranged in the first mounting groove, and the other end of the first oil guide groove is communicated with the inner wall of the shell; the casing inner wall is close to first oil guide groove bottom portion upwards swells and forms and leads the oily muscle, it is close to lead the height of oily muscle first mounting groove one side highly reduces to the opposite side gradually.
In the planetary gear differential, the first mounting grooves are arranged at the corresponding positions on the two sides in the shell and are used for mounting the planetary gears, the second mounting grooves are arranged at the top and the bottom in the shell and are used for mounting the side gears, in addition, the first mounting holes and the second mounting holes are respectively arranged in the first mounting grooves and the second mounting grooves and are used for being communicated with the outside, wherein the first mounting grooves are internally provided with first oil guide grooves communicated with the first mounting holes and the inner wall of the shell, which is close to the bottom of the first oil guide grooves, protrudes upwards to form oil guide ribs; lubricating oil follows planetary gear differential casing, loop through first mounting hole, the oilhole or the installation window of second mounting hole and casing side get into in the casing, lubricating oil can be in the blocking of leading the oil muscle and the guide flows to first oil groove down when getting into the casing from the casing side, because it highly reduces from being close to first mounting groove one side to the opposite side gradually to lead the oil muscle, make lubricating oil can not cross when leading the first oil groove of oil muscle flow direction, lead the contact of oil muscle inflow first mounting groove in with planetary gear's outer lane, but make the quick accurate inflow first oil groove of lubricating oil, first oil groove of leading is again with the junction of planetary gear and planetary gear shaft in the first mounting hole of lubricating oil direction, the place that needs lubrication just here, lead the flow direction to lubricating oil through the setting of first oil groove and oil muscle of leading, make the lubricating oil flow direction need lubricated place most, thereby the lubricating effect of lubricating oil to planetary gear differential has been improved. Therefore the utility model discloses when the planetary gear differential mechanism among the prior art was lubricated through the mode of splashing in the technical scheme solution, lubricated lower problem of effect.
In addition, according to the utility model provides a planetary gear differential mechanism can also have following additional technical characteristics:
preferably, first oil groove both sides of leading all are equipped with leads oily muscle, lead oily muscle with first oil groove parallel of leading.
Preferably, mounting windows are formed in two sides of the shell, the mounting windows and the first mounting holes are arranged on different sides, and the oil guide ribs are arranged right opposite to the mounting windows.
Preferably, the first oil guide groove is obliquely arranged in the first mounting groove, so that the height of the first oil guide groove is gradually increased from one side close to the first mounting hole to the other side.
Preferably, the width of the first oil guide groove gradually increases from one side close to the first mounting hole to the other side.
Preferably, oil groove and third are led around being equipped with parallel arrangement's second on the casing lateral wall and are led the oil groove, the second lead the oil groove with first mounting hole intercommunication, the third lead the oil groove through lead the oil groove to one side with the oil groove intercommunication is led to the second.
Preferably, the planetary gear differential further comprises a planetary gear shaft arranged in the first mounting hole and a planetary gear arranged in the first mounting hole, the planetary gear shaft is matched with the inner hole of the planetary gear, and an oil guide shaft groove is formed in the planetary gear shaft.
Preferably, the oil guide shaft groove is spirally arranged along the axis of the planet gear shaft.
Preferably, a groove is formed in the outer side wall of the shell, a through hole is formed in the bottom of the groove, a positioning hole matched with the through hole is formed in the planetary gear shaft, the planetary gear shaft is arranged in the first mounting hole in a penetrating mode and fixedly connected with the shell through matching of a positioning pin, the through hole and the positioning hole.
Preferably, a gasket is further arranged between the planetary gear and the first mounting groove, and an oil storage hole is formed in the gasket.
Furthermore, the utility model also provides an automobile, the automobile includes foretell planetary gear differential mechanism.
Drawings
Fig. 1 is a schematic structural view of a planetary gear differential mechanism according to a first embodiment of the present invention;
fig. 2 is a schematic structural view of a case of a planetary gear differential mechanism according to a first embodiment of the present invention;
fig. 3 is a front view of a case of a planetary gear differential proposed in a first embodiment of the present invention;
FIG. 4 is a bottom view of FIG. 3;
FIG. 5 is a cross-sectional view taken along direction A of FIG. 3;
fig. 6 is a front view of a planetary gear differential proposed in a second embodiment of the present invention;
FIG. 7 is a cross-sectional view taken along direction B of FIG. 6;
fig. 8 is a front view of a gasket according to a second embodiment of the present invention;
description of the main element symbols:
| |
10 | |
11 |
| |
111 | |
12 |
| |
121 | First |
13 |
| |
14 | |
15 |
| Second |
16 | Third |
17 |
| Oblique |
18 | Planet |
20 |
| |
30 | |
31 |
| Oil |
21 | |
19 |
| Through- |
191 | Locating |
22 |
| Positioning |
40 | |
50 |
| |
51 | |
60 |
The following detailed description of the invention will be further described in conjunction with the above-identified drawings.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Several embodiments of the invention are presented in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 to 5, a planetary gear differential according to a first embodiment of the present invention is shown, which includes a housing 10:
a first mounting groove 11 for mounting the planetary gear 30 is respectively arranged on two sides in the shell 10, a first mounting hole 111 penetrating through the shell 10 is arranged in the first mounting groove 11, second mounting grooves 12 for mounting the side gear 60 are arranged on the top and the bottom in the shell 10, a second mounting hole 121 penetrating through the shell 10 is arranged in the second mounting groove 12, a first oil guide groove 13 with one end communicated with the first mounting hole 111 is arranged in the first mounting groove 11, and the other end of the first oil guide groove 13 is communicated with the inner wall of the shell 10; the inner wall of the shell 10 is close to the bottom of the first oil guide groove 13 and protrudes upwards to form an oil guide rib 14, and the height of the oil guide rib 14 is gradually reduced from one side close to the first mounting groove 11 to the other side.
It can be understood that, by providing the first mounting groove 11 at the corresponding position on both sides in the casing 10 for mounting the planetary gear 30, and further providing the second mounting groove 12 at the top and bottom in the casing 10 for mounting the side gear 60, in addition, the first mounting groove 11 and the second mounting groove 12 are respectively provided with the first mounting hole 111 and the second mounting hole 121 for communicating with the outside, wherein the first mounting groove 11 is provided with the first oil guiding groove 13 communicating with the first mounting hole 111 and the inner wall of the casing 10, and the inner wall of the casing 10 protrudes upward near the bottom of the first oil guiding groove 13 to form the oil guiding rib 14; lubricating oil passes through the first mounting hole 111, the second mounting hole 121 and the oil hole or the mounting window 15 on the side of the housing from the housing of the planetary differential gear and enters the housing 10, when the lubricating oil enters the housing 10 from the side of the housing, the lubricating oil can flow to the first oil guide groove 13 under the blocking and guiding of the oil guide rib 14, because the height of the oil guide rib 14 is gradually reduced from one side close to the first mounting groove 11 to the other side, the lubricating oil can not flow into the first mounting groove 11 to contact with the outer ring of the planetary gear 30 after passing through the oil guide rib 14 when flowing to the first oil guide groove 14, but can quickly and accurately flow into the first oil guide groove 11, the first oil guide groove 11 guides the lubricating oil to the joint between the planetary gear 30 and the planetary gear shaft 20 in the first mounting hole 111, which is the place which needs most lubrication, the flow direction of the lubricating oil is guided by the arrangement of the first oil guide groove 13 and the oil guide rib 14, so that the lubricating oil flows to the place which needs most lubrication, thereby improving the lubricating effect of the lubricating oil on the planetary differential gear. Therefore the utility model discloses when planetary gear differential mechanism among the prior art was lubricated through the mode of splashing in the technical scheme solution, lubricated lower problem of effect.
In addition, both sides of the first oil guide groove 13 are provided with oil guide ribs 14, and the oil guide ribs 14 are parallel to the first oil guide groove 13. All be equipped with two first oil grooves 13 of leading on each first mounting groove 11, every first oil groove 13 of leading sets up one outward and leads oily muscle 14, can not lead the first lubricating oil restriction of leading oil groove 13 of oily muscle 14 flow direction in the casing 11 two and lead between oily muscle 14, make lubricating oil can not fly in disorder, thereby slowly flow into first oil groove 13 of leading, lead oily muscle 14 and first oil groove 13 parallel arrangement of leading in addition and can make lubricating oil from leading oily muscle 14 to first distance of leading oil groove 13 shortest, accelerate the lubrication efficiency of lubricating oil.
By way of example and not limitation, in some alternative embodiments, the housing 10 starts with mounting windows 15 on both sides, the mounting windows 15 are disposed on different sides from the first mounting holes 111, and the oil guiding ribs 14 are disposed opposite to the mounting windows 15. Adopt the planetary differential's of integral type casing need begin installation window 15 in casing both sides, and installation window 15 makes more lubricating oil flow in planetary differential more easily for the oilhole on the split type planetary differential casing to, will lead 14 one sides of oil muscle and set up in installation window 15 departments, can be more convenient and fast with lubricating oil direction first lead oil groove 13, follow first lead in the leading-in first mounting hole 111 of oil groove 13 again. Wherein it is additionally noted that the side gear 60 is larger in size than the planetary gear 30, and the area of the mounting window 15 is larger than the maximum cross-section of the side gear 60 so that the side gear 60 can be mounted into the case 10; the optimal size of the mounting window 15 is that a single side is not more than 5mm of the maximum sectional area of the side gear 60, so that the mounting condition can be met and the overall strength of the shell can be ensured.
Further, the first oil guiding groove 13 is obliquely disposed in the first mounting groove 11, so that the height of the first oil guiding groove 13 gradually increases from one side close to the first mounting hole 111 to the other side. The first oil guide groove 13 is obliquely arranged, so that the lubricating oil flowing into the first oil guide groove 13 along the oil guide rib 14 can obtain an acceleration, and the lubricating oil can flow into the first mounting hole 111 more quickly and accurately, so that the lubricating efficiency of the lubricating oil is improved.
Further, the width of the first oil guide groove 13 is gradually increased from one side to the other side near the first mounting hole 111. Set the width of first oil groove 13 into the gradual change and form an inverted triangle shape, can open the effect of accurate direction to first oil groove 13 width reduces from first mounting hole 111 to the opposite side gradually, can make lubricating oil when first oil groove 13 flows to first mounting hole 111 is led to first, thereby the space of flow reduces gradually and can accelerate the flow speed of lubricating oil, improves the lubricated efficiency of lubricating oil.
In addition, around being equipped with parallel arrangement's second on the casing 10 lateral wall and leading oil groove 16 and third and lead oil groove 17, oil groove 16 and first mounting hole 111 intercommunication are led to the second, and oil groove 16 intercommunication is led through leading oil groove 18 and second to the third to the second. The casing 10 is further provided with a second oil guide groove 16 and a third oil guide groove 17 for collecting and guiding the lubricating oil, which does not flow into the casing 10 through the oil holes or the mounting windows 15, of the casing 10 into the casing 10, the lubricating oil flows into the joints of the planetary gears 30 and the planetary gear shafts 20 in the first mounting holes 111 through the second oil guide groove 16, and the lubricating oil in the third oil guide groove 17 flows into the second oil guide groove 16 through the inclined oil guide groove 18.
Referring to fig. 6 to 8, a planetary gear differential according to a second embodiment of the present invention is shown, the second embodiment has the same general structure as the first embodiment, and the only difference is that the planetary gear differential further includes a planetary gear shaft 20 disposed in the first mounting hole 111 and a planetary gear 30 disposed in the first mounting groove 11, the planetary gear shaft 20 is adapted to an inner hole 31 of the planetary gear 30, and an oil guide shaft groove 21 is disposed on the planetary gear shaft 20. The oil guide shaft groove can enable lubricating oil to flow along the groove, and enable the lubricating oil to repeatedly pass through the matching surface of the planetary gear 30 and the planetary gear shaft 20, heat generated by rotary friction of the planetary gear shaft 20 and the planetary gear 30 is continuously taken away, cooling is achieved, and sintering is prevented. Meanwhile, when the lubricating oil repeatedly passes through the matching surface, a layer of oil film is formed on the matching surface to reduce the friction force between the planet gear shaft 20 and the planet gear 30 and reduce the abrasion speed.
Further, the oil guide shaft groove 21 is spirally provided along the axis of the pinion shaft 20. When the lubricant oil needs to flow into or out of the first mounting hole 111, the lubricant oil flows along the path of the oil guide shaft groove 21 along with the rotation of the housing 10. Adopt the spiral to lead oil shaft groove 21 and more do benefit to the flow of lubricating oil, especially to the higher condition of rotational speed for lubricating oil can flow along the direction of spiral of leading oil shaft groove 21 along rotating, avoids because of the rotational speed is too high, and centrifugal force is too big, causes lubricating oil to hug closely the cell wall of leading the oil groove and can't fall late, and the problem of lubricating oil whereabouts difficulty takes place. In addition, the spiral oil guide shaft groove 21 is arranged, so that the flow speed of the lubricating oil on the planet gear shaft 20 can be reduced, and the lubricating oil stays on the planet gear shaft 20 for a long time to provide a lubricating effect for the rotation between the planet gear 30 and the planet gear shaft 20.
In addition, a groove 19 is formed in the outer side wall of the housing 10, a through hole 191 is formed in the bottom of the groove 19, a positioning hole 22 matched with the through hole 191 is formed in the planet shaft 20, and the planet shaft 20 is arranged in the first mounting hole 111 in a penetrating mode and fixedly connected with the housing 10 through the matching of the positioning pin 40, the through hole 191 and the positioning hole 22. The planet gear shaft 20 is fixed in the shell 10 through the positioning pin 40, wherein the positioning pin 40 can adopt a rolled cylindrical pin which can better buffer load relative to a common cylindrical pin, and the deformation of the rolled cylindrical pin can be used for ensuring that the hole is not deformed when the planet gear shaft is fixed.
Further, a gasket 50 is arranged between the planetary gear 30 and the first mounting groove 11, and an oil storage hole 51 is formed in the gasket 50. The additional pad 50 can reduce friction between the planetary gear 30 and the housing 10 to prevent the planetary gear 30 and the housing 10 from being damaged due to friction, and the oil storage hole 51 is formed in the pad 50 to store a certain amount of lubricating oil to lubricate the planetary gear 30.
To sum up, in the planetary gear differential according to the above embodiments of the present invention, the first mounting groove 11 is disposed at the corresponding position on two sides in the casing 10 for mounting the planetary gear 30, the second mounting groove 12 is disposed at the top and the bottom in the casing 10 for mounting the side gear 60, the first mounting hole 111 and the second mounting hole 121 are respectively disposed in the first mounting groove 11 and the second mounting groove 12 for communicating with the outside, wherein the first oil guiding groove 13 communicating with the first mounting hole 111 and the inner wall of the casing 10 is disposed in the first mounting groove 11, and the inner wall of the casing 10 protrudes upward near the bottom of the first oil guiding groove 13 to form the oil guiding rib 14; lubricating oil passes through the first mounting hole 111, the second mounting hole 121 and the oil hole or the mounting window 15 on the side of the housing from the housing of the planetary differential gear and enters the housing 10, when the lubricating oil enters the housing 10 from the side of the housing, the lubricating oil can flow to the first oil guide groove 13 under the blocking and guiding of the oil guide rib 14, because the height of the oil guide rib 14 is gradually reduced from one side close to the first mounting groove 11 to the other side, the lubricating oil can not flow into the first mounting groove 11 to contact with the outer ring of the planetary gear 30 after passing through the oil guide rib 14 when flowing to the first oil guide groove 14, but can quickly and accurately flow into the first oil guide groove 11, the first oil guide groove 11 guides the lubricating oil to the joint between the planetary gear 30 and the planetary gear shaft 20 in the first mounting hole 111, which is the place which needs most lubrication, the flow direction of the lubricating oil is guided by the arrangement of the first oil guide groove 13 and the oil guide rib 14, so that the lubricating oil flows to the place which needs most lubrication, thereby improving the lubricating effect of the lubricating oil on the planetary differential gear. Therefore the utility model discloses when planetary gear differential mechanism among the prior art was lubricated through the mode of splashing in the technical scheme solution, lubricated lower problem of effect.
Furthermore, the utility model discloses still provide an automobile, planetary gear differential mechanism in the middle of including above-mentioned embodiment.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A planetary gear differential mechanism is characterized by comprising a shell, wherein first mounting grooves for mounting planetary gears are respectively formed in two sides in the shell, a first mounting hole penetrating through the shell is formed in the first mounting groove, second mounting grooves for mounting half-axle gears are formed in the top and the bottom in the shell, a second mounting hole penetrating through the shell is formed in the second mounting groove, a first oil guide groove with one end communicated with the first mounting hole is formed in the first mounting groove, and the other end of the first oil guide groove is communicated with the inner wall of the shell; the casing inner wall is close to first oil guide groove bottom portion upwards swells and forms and leads the oily muscle, it is close to lead the height of oily muscle first mounting groove one side highly reduces to the opposite side gradually.
2. The planetary gear differential according to claim 1, wherein oil guiding ribs are provided on both sides of the first oil guiding groove, and the oil guiding ribs are parallel to the first oil guiding groove.
3. The planetary gear differential as claimed in claim 1, wherein mounting windows are formed in both sides of the housing, the mounting windows are disposed at different sides from the first mounting holes, and the oil guiding ribs are disposed opposite to the mounting windows.
4. The planetary gear differential according to claim 1, wherein the first oil guide groove is provided obliquely in the first mounting groove such that a height of the first oil guide groove gradually increases from one side to the other side near the first mounting hole.
5. A planetary gear differential as claimed in claim 1, wherein said first oil-guiding groove has a width that gradually increases from one side near said first mounting hole to the other side.
6. The planetary gear differential according to claim 1, wherein a second oil guide groove and a third oil guide groove are formed in the side wall of the housing in a parallel arrangement, the second oil guide groove is communicated with the first mounting hole, and the third oil guide groove is communicated with the second oil guide groove through an oblique oil guide groove.
7. The planetary gear differential according to claim 1, further comprising a planetary gear shaft disposed in the first mounting groove and a planetary gear disposed in the first mounting groove, the planetary gear shaft fitting into the inner hole of the planetary gear, the planetary gear shaft being provided with an oil guide shaft groove.
8. The planetary gear differential as claimed in claim 7, wherein the oil guide shaft groove is spirally arranged along the axis of the planetary gear shaft.
9. The planetary gear differential as claimed in claim 7, wherein a groove is formed in an outer side wall of the housing, a through hole is formed in a bottom of the groove, a positioning hole matched with the through hole is formed in the planetary gear shaft, and the planetary gear shaft is inserted into the first mounting hole and fixedly connected with the housing through a positioning pin matched with the through hole and the positioning hole.
10. An automobile comprising the planetary gear differential of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221999715.9U CN217898697U (en) | 2022-07-29 | 2022-07-29 | Planetary gear differential mechanism and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221999715.9U CN217898697U (en) | 2022-07-29 | 2022-07-29 | Planetary gear differential mechanism and automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217898697U true CN217898697U (en) | 2022-11-25 |
Family
ID=84137544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221999715.9U Active CN217898697U (en) | 2022-07-29 | 2022-07-29 | Planetary gear differential mechanism and automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217898697U (en) |
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2022
- 2022-07-29 CN CN202221999715.9U patent/CN217898697U/en active Active
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