CN111457017A - Joint ring gear, gearbox and vehicle - Google Patents
Joint ring gear, gearbox and vehicle Download PDFInfo
- Publication number
- CN111457017A CN111457017A CN202010412523.2A CN202010412523A CN111457017A CN 111457017 A CN111457017 A CN 111457017A CN 202010412523 A CN202010412523 A CN 202010412523A CN 111457017 A CN111457017 A CN 111457017A
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- China
- Prior art keywords
- tooth
- ring gear
- arc
- teeth
- jointed
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 abstract description 12
- 230000008878 coupling Effects 0.000 description 9
- 238000010168 coupling process Methods 0.000 description 9
- 238000005859 coupling reaction Methods 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
- F16D23/02—Arrangements for synchronisation, also for power-operated clutches
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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
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/08—Profiling
- F16H55/0806—Involute profile
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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
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/17—Toothed wheels
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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
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/17—Toothed wheels
- F16H2055/176—Ring gears with inner teeth
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
The application provides a joint ring gear, gearbox and vehicle, its characterized in that, the joint ring gear includes a plurality of first joint teeth, first joint tooth includes the friction surface, the friction surface includes the cambered surface section, treat the meshing tooth can with the cambered surface section is contradicted and is in slide on the cambered surface section, so that it is adjacent to treat the meshing tooth entering between the first joint tooth, with first joint tooth meshes mutually. The engagement gear ring provided by the embodiment of the invention can reduce impact during gear shifting, reduce stress concentration of engagement teeth in an engagement process and prevent the engagement teeth from being broken.
Description
Technical Field
The application belongs to the technical field of transmission equipment, and particularly relates to a joint gear ring, a gearbox and a vehicle.
Background
Synchronizers are important shifting parts of motor vehicle transmissions, and engaging a ring gear is an important part of the synchronizer. With the application and popularization of new energy electric vehicles, in order to meet customer requirements, the application of multi-gear electric vehicle gearboxes is gradually wide. In order to reduce the cost, more and more transmission manufacturers choose to cancel an inertial type lock ring synchronizer of a synchronous ring, and realize the synchronization process by utilizing the speed regulation of a motor. However, after the motor is regulated, a certain rotation speed difference still exists. In the synchronization process, the problem of large gear shifting impact is caused due to the difference of rotating speed, and the engagement teeth are easy to break and lose efficacy.
Disclosure of Invention
Therefore, the technical problem to be solved by the present application is to provide a joint ring gear to reduce impact during shifting, reduce stress concentration of joint teeth during a joint process, and prevent the joint teeth from being broken.
In order to solve the above-described problem, the present application provides a coupling ring gear including a plurality of first coupling teeth including a friction surface including an arc-shaped segment against which a tooth to be engaged can collide and slide on the arc-shaped segment so that the tooth to be engaged enters between adjacent first coupling teeth to be engaged with the first coupling teeth.
Preferably, the arc surface section protrudes towards the direction of the tooth to be meshed, and the end surface of the arc surface section, which is close to the tooth to be meshed, is an arc surface.
Preferably, the friction surface at least comprises a first arc surface section and a second arc surface section, and one end of the first arc surface section is connected with one end of the second arc surface section.
Preferably, the first arc-shaped surface section and the second arc-shaped surface section are arranged in a rotational direction of the engaging ring gear.
Preferably, the first arc surface section and the second arc surface section are symmetrically arranged.
Preferably, the first arc surface section comprises a first inner tooth surface and a first outer tooth surface, the second arc surface section comprises a second inner tooth surface and a second outer tooth surface, the first inner tooth surface and the second inner tooth surface are symmetrically arranged, and the first outer tooth surface and the second outer tooth surface are symmetrically arranged;
when the plum-blossom angle of the teeth to be meshed is less than or equal to 120 degrees, and the gap between the first inner tooth surface and the second inner tooth surface is greater than two thirds of the thickness of the bevel teeth of the joint surface of the teeth to be meshed, the radians of the first inner tooth surface and the first outer tooth surface are the same, and the radians of the second inner tooth surface and the second outer tooth surface are the same.
Preferably, when the plum-blossom angle of the tooth to be meshed is greater than 120 degrees and the gap between the first inner tooth surface and the second inner tooth surface is less than two thirds of the thickness of the bevel tooth of the joint surface of the tooth to be meshed, the radian of the first inner tooth surface is greater than that of the first outer tooth surface, and the radian of the second inner tooth surface is greater than that of the second outer tooth surface.
Preferably, a groove is formed at the joint of the first arc surface section and the second arc surface section, and the groove extends along the axial direction of the joint gear ring.
Preferably, the groove surface of the groove is an arc surface, and the groove surface of the groove is tangent to the first inner tooth surface and the second inner tooth surface.
In another aspect of the application, a gearbox is provided comprising an engaging ring gear as described above.
In another aspect of the present application, a vehicle is provided that includes the engaging ring gear as described above.
Advantageous effects
The engagement gear ring provided by the embodiment of the invention can reduce impact during gear shifting, reduce stress concentration of engagement teeth in an engagement process and prevent the engagement teeth from being broken.
Drawings
FIG. 1 is a perspective view of a conjoined ring gear according to an embodiment of the present application;
FIG. 2 is a top view of a conjoined ring gear of an embodiment of the present application;
FIG. 3 is a schematic view of a first engagement tooth according to an embodiment of the present application;
FIG. 4 is a half sectional view of a conjoined ring gear according to an embodiment of the present application.
The reference numerals are represented as:
1. a first engaging tooth; 11. a first arc surface section; 111. a first inner tooth surface; 112. a first outer tooth surface; 12. a second arc surface section; 121. a second inner tooth surface; 122. a second outer tooth surface; 13. and (4) a groove.
Detailed Description
Referring to fig. 1 to 4 in combination, according to an embodiment of the present application, a coupling ring gear includes a plurality of first coupling teeth 1, the first coupling teeth 1 include a friction surface, and the friction surface includes an arc-shaped section, and a tooth to be coupled can collide with and slide on the arc-shaped section, so that the tooth to be coupled enters between adjacent first coupling teeth 1 to be coupled with the first coupling teeth 1. Through set up the cambered surface section on the friction surface, impact when can reducing to shift gears reduces the stress concentration of joint tooth in the engaging process, prevents that the joint tooth from being broken, has also prolonged the joint route of first joint tooth 1 with the tooth of waiting to engage simultaneously, reduces the gear shift time, promotes the gear shift quality. And simultaneously, the engagement friction effect in the synchronization process is enhanced.
Further, the joint gear ring and the teeth to be meshed are in a rotating state during jointing, and the joint gear sleeve moves in the vertical direction. When the engagement is started, the tooth to be engaged is firstly contacted with the engagement gear ring and slides relatively to generate friction, when the tooth to be engaged is opposite to the gap between two adjacent first engagement teeth 1, the tooth to be engaged enters the gap, the engagement process is finished, and the gear shifting is finished.
Further, the friction surface is a tooth side wall of the first engaging tooth 1 facing the tooth side to be engaged, and when the tooth to be engaged is located above the engaging ring gear, as shown in fig. 2, the friction surface is a tooth side wall of the first engaging tooth 1 located at the top.
Specifically, in this embodiment, the friction surface is an arc-shaped surface as a whole, that is, the friction surface is an arc-shaped surface section as a whole.
The cambered surface section is outstanding towards the direction of waiting to engage the tooth and is close to the terminal surface of waiting to engage the tooth for the cambered surface, has guaranteed the reduction of the impact when shifting gears, reduces the stress concentration of joint tooth among the joining process, prevents that the joint tooth from being broken, has also prolonged first joint tooth 1 simultaneously and has waited the joint path of joint tooth, reduces the gear shift time, promotes the gear shift quality.
Further, the middle part of the cambered surface section protrudes towards the direction of the tooth to be meshed.
The friction surface at least comprises a first arc surface section 11 and a second arc surface section 12, and one end of the first arc surface section 11 is connected with one end of the second arc surface section 12. By arranging the first cambered surface section 11 and the second cambered surface section 12, stress concentration is further reduced, a friction path is further prolonged, and synchronization time is reduced.
The first arc surface section 11 and the second arc surface section 12 are arranged along the rotating direction of the joint gear ring, so that a longer friction path is ensured.
Specifically, as shown in fig. 3, in the present embodiment, the first arc surface segment 11 is located at the left side of the second arc surface segment 12, and the engagement gear rotates clockwise or counterclockwise.
The first cambered surface section 11 and the second cambered surface section 12 are symmetrically arranged.
Further, as shown in fig. 2 and 3, the first arc surface segment 11 and the second arc surface segment 12 are formed into an m shape.
Further, the symmetrical plane of the first arc surface section 11 and the second arc surface section 12 is a vertical plane passing through the center of the first arc surface section 11 and the second arc surface section 12 in the radial direction of the joint gear ring.
The first arc surface section 11 comprises a first inner tooth surface 111 and a first outer tooth surface 112, the second arc surface section 12 comprises a second inner tooth surface 121 and a second outer tooth surface 122, the first inner tooth surface 111 and the second inner tooth surface 121 are symmetrically arranged, and the first outer tooth surface 112 and the second outer tooth surface 122 are symmetrically arranged; the stability of the first engaging tooth 1 is ensured. When the plum-blossom angle of the tooth to be meshed is less than or equal to 120 degrees, and the gap between the first inner tooth surface 111 and the second inner tooth surface 121 is greater than two-thirds of the thickness of the bevel teeth of the joint surface of the tooth to be meshed, the radians of the first inner tooth surface 111 and the first outer tooth surface 112 are the same, and the radians of the second inner tooth surface 121 and the second outer tooth surface 122 are the same, so that the problems that the first arc surface section 11 and the second arc surface section 12 are invalid and have no friction force in the process of combining the first joint tooth 1 and the tooth to be meshed are solved.
When the plum-blossom angle of the to-be-meshed teeth is larger than 120 degrees, and the gap between the first inner tooth surface 111 and the second inner tooth surface 121 is smaller than two thirds of the thickness of the bevel teeth of the joint surface of the to-be-meshed teeth, the radian of the first inner tooth surface 111 is larger than that of the first outer tooth surface 112, and the radian of the second inner tooth surface 121 is larger than that of the second outer tooth surface 122, so that the problem that the first arc surface section 11 and the second arc surface section 12 are invalid and have no friction force in the process of combining the first joint tooth 1 and the to-be-meshed teeth is solved.
The junction of the first arc surface section 11 and the second arc surface section 12 is provided with a groove 13, and the groove 13 extends along the axial direction of the joint gear ring. The problem of too small a friction torque due to too much lubricating oil can be prevented by providing the groove 13.
Further, the length of the groove 13 is the same as the length of the first engaging tooth 1.
Specifically, in this embodiment, the groove 13 is vertically disposed.
The groove surface of the groove 13 is an arc surface, and the groove surface of the groove 13 is tangent to the first inner tooth surface 111 and the second inner tooth surface 121, so that the problem that the first arc surface section 11 and the second arc surface section 12 are invalid due to too much lubricating oil and too small friction torque can be further prevented.
Further, in the present embodiment, the groove surface of the groove 13 is the top surface of the groove 13.
In another aspect of this embodiment, a transmission is provided that includes an engaging ring gear as described above.
Further, the gearbox also comprises a joint sleeve, and second joint teeth, namely the teeth to be meshed, are arranged on the joint sleeve. The second engaging tooth can mesh with the first engaging tooth 1.
In another aspect of the present embodiment, there is provided a vehicle including the engaging ring gear as described above.
The engagement gear ring provided by the embodiment of the invention can reduce impact during gear shifting, reduce stress concentration of engagement teeth in an engagement process and prevent the engagement teeth from being broken.
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed. The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be considered as the protection scope of the present application.
Claims (11)
1. A jointed ring gear comprising a plurality of first jointed teeth, said first jointed teeth comprising a friction surface, said friction surface comprising a curved surface section, a tooth to be meshed capable of colliding with and sliding on said curved surface section to enter between adjacent ones of said first jointed teeth to mesh with said first jointed teeth.
2. The jointed ring gear of claim 1, wherein said arc-shaped segment protrudes toward a direction in which the tooth to be meshed is located, and an end surface of said arc-shaped segment near the tooth to be meshed is an arc-shaped surface.
3. The jointed ring gear of claim 1, wherein said friction surface comprises at least a first arc surface segment and a second arc surface segment, one end of said first arc surface segment being contiguous with one end of said second arc surface segment.
4. The jointed ring gear of claim 3, wherein said first arc surface segment and said second arc surface segment are arranged in a direction of rotation of said jointed ring gear.
5. The jointed ring gear of claim 3, wherein said first arc surface segment is symmetrically disposed with respect to said second arc surface segment.
6. The jointed ring gear of claim 3, wherein said first arc surface segment includes a first inner tooth surface and a first outer tooth surface, said second arc surface segment includes a second inner tooth surface and a second outer tooth surface, said first inner tooth surface being disposed symmetrically to said second inner tooth surface, said first outer tooth surface being disposed symmetrically to said second outer tooth surface;
when the plum-blossom angle of the teeth to be meshed is less than or equal to 120 degrees, and the gap between the first inner tooth surface and the second inner tooth surface is greater than two thirds of the thickness of the bevel teeth of the joint surface of the teeth to be meshed, the radians of the first inner tooth surface and the first outer tooth surface are the same, and the radians of the second inner tooth surface and the second outer tooth surface are the same.
7. The jointed ring gear of claim 6, wherein when the tooth to be meshed has a plum-blossom angle greater than 120 ° and the gap between said first inner tooth flank and said second inner tooth flank is less than two-thirds of the thickness of the faying surface taper tooth of the tooth to be meshed, the radian of said first inner tooth flank is greater than the radian of said first outer tooth flank, and the radian of said second inner tooth flank is greater than the radian of said second outer tooth flank.
8. The jointed ring gear of claim 3, where said first arc surface segment meets said second arc surface segment with a groove extending in an axial direction of said jointed ring gear.
9. The jointed ring gear of claim 8, where said groove surface of said groove is a cambered surface, said groove surface of said groove being tangent to said first inner tooth surface and said second inner tooth surface.
10. A gearbox comprising a split ring gear according to any one of claims 1-9.
11. A vehicle characterized by comprising the jointed ring gear of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010412523.2A CN111457017B (en) | 2020-05-15 | 2020-05-15 | Joint ring gear, gearbox and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010412523.2A CN111457017B (en) | 2020-05-15 | 2020-05-15 | Joint ring gear, gearbox and vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111457017A true CN111457017A (en) | 2020-07-28 |
| CN111457017B CN111457017B (en) | 2021-10-22 |
Family
ID=71677394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010412523.2A Active CN111457017B (en) | 2020-05-15 | 2020-05-15 | Joint ring gear, gearbox and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111457017B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112248801A (en) * | 2020-09-24 | 2021-01-22 | 华为技术有限公司 | Reduction gear, power assembly and vehicle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005024041A (en) * | 2003-07-04 | 2005-01-27 | Aisin Ai Co Ltd | Lubricating device of synchronous transmission mechanism |
| CN202203363U (en) * | 2011-06-28 | 2012-04-25 | 上海法雷奥汽车电器系统有限公司 | Driving gear and starter adopting same |
| CN202646597U (en) * | 2012-06-13 | 2013-01-02 | 常州市格里森前进齿轮有限公司 | Lubrication type gear |
| CN204553607U (en) * | 2015-04-01 | 2015-08-12 | 日照海卓液压有限公司 | Microshock novel synchronous device engages gear ring |
| CN207297814U (en) * | 2017-10-24 | 2018-05-01 | 常州市兴维邦精密机械制造有限公司 | A kind of gear ring easy to lubrication |
| CN109027184A (en) * | 2018-09-10 | 2018-12-18 | 重庆青山工业有限责任公司 | The gear ring of automobile double-clutch speed changer gearshift |
-
2020
- 2020-05-15 CN CN202010412523.2A patent/CN111457017B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005024041A (en) * | 2003-07-04 | 2005-01-27 | Aisin Ai Co Ltd | Lubricating device of synchronous transmission mechanism |
| CN202203363U (en) * | 2011-06-28 | 2012-04-25 | 上海法雷奥汽车电器系统有限公司 | Driving gear and starter adopting same |
| CN202646597U (en) * | 2012-06-13 | 2013-01-02 | 常州市格里森前进齿轮有限公司 | Lubrication type gear |
| CN204553607U (en) * | 2015-04-01 | 2015-08-12 | 日照海卓液压有限公司 | Microshock novel synchronous device engages gear ring |
| CN207297814U (en) * | 2017-10-24 | 2018-05-01 | 常州市兴维邦精密机械制造有限公司 | A kind of gear ring easy to lubrication |
| CN109027184A (en) * | 2018-09-10 | 2018-12-18 | 重庆青山工业有限责任公司 | The gear ring of automobile double-clutch speed changer gearshift |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112248801A (en) * | 2020-09-24 | 2021-01-22 | 华为技术有限公司 | Reduction gear, power assembly and vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111457017B (en) | 2021-10-22 |
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