CN202220834U - Differential gear meshing type speed reducing device - Google Patents
Differential gear meshing type speed reducing device Download PDFInfo
- Publication number
- CN202220834U CN202220834U CN2011203457256U CN201120345725U CN202220834U CN 202220834 U CN202220834 U CN 202220834U CN 2011203457256 U CN2011203457256 U CN 2011203457256U CN 201120345725 U CN201120345725 U CN 201120345725U CN 202220834 U CN202220834 U CN 202220834U
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- China
- Prior art keywords
- input shaft
- external gear
- tooth
- speed reducing
- type speed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to a differential gear meshing type speed reducing device, which comprises a body provided with an input shaft, and is characterized in that an internal gear is mounted outside an external gear which is mounted outside the input shaft. Further, external gears are distributed on the outer wall of the external gear, and internal gears are distributed on the inner wall of the internal gear. By means of meshing of differential gears, high-precision speed reducing control can be realized via circular motion of the input shaft in a free path space. More importantly, speed reducing control in any ratio can be realized by adjusting numbers of different gears, so that reduction ratio and size can be selected autonomously. Machining difficulty of parts in batch production is reduced, precision of a novel speed reducer is promoted, and accordingly production efficiency is improved.
Description
Technical field
The utility model relates to a kind of speed reducer, relates in particular to the engagement type speed reducer of a kind of poor tooth.
Background technique
Wave-generator is the important component part of harmonic wave speed reducing machine; Its precision directly influences the service precision of speed reducer; During original design was used, wave-generator was directly installed on the input shaft, and such Placement makes the machining accuracy error of part and the precision that assembly error directly influences wave-generator; Otherwise make the requirement on machining accuracy of part and matching requirements increase greatly, the processing cost that this has just restricted the service precision of speed reducer and has increased product.
Simultaneously, reduction speed ratio is meant the ratio of instantaneous input speed and output speed in the reducing gear, the i.e. ratio of the follower number of teeth and driving wheel number of teeth difference.But in the existing speed reducer, its reduction speed ratio is fixed, and can't satisfy the demand of different reduction speed ratio through special customization, and application is restricted.
The model utility content
The purpose of the utility model is exactly the problems referred to above that exist in the existing technology in order to solve, and provides a kind of poor tooth engagement type speed reducer.
The purpose of the utility model realizes through following technological scheme:
The engagement type speed reducer of difference tooth includes device body, and described device body is provided with input shaft, and wherein: described input shaft is distributed with external gear, and said external gear periphery is distributed with internal gear; The flank of tooth of said external gear distributes outwardly, and the flank of tooth of said internal gear distributes inwardly.
Further, the above-mentioned engagement type speed reducer of poor tooth, wherein: be distributed with the free travel space between described input shaft outer wall and the external gear inwall.
Further, the above-mentioned engagement type speed reducer of poor tooth, wherein: the height of projection of said external gear teeth is smaller or equal to the indent gap depth between the internal gear teeth.
The advantage of the utility model technological scheme is mainly reflected in: owing to adopted the mode of poor tooth engagement, move in a circle in the free travel space through input shaft and can realize high-precision deceleration control.What is more important can be through adjusting the deceleration control that different number of gears reaches any ratio; Realize the autonomous size of selecting reduction speed ratio and size; When producing in enormous quantities, reduced the difficulty of processing of part, promoted the precision of novel speed reducer, thereby improved manufacturing efficiency.
Description of drawings
The purpose of the utility model, advantage and characteristics will illustrate through the non-limitative illustration of following preferred embodiment and explain.These embodiments use the prominent example of the utility model technological scheme, and all technological schemes of taking to be equal to replacement or equivalent transformation and forming all drop within the scope of the utility model requirement protection.In the middle of these accompanying drawings,
Fig. 1 is the organigram of the engagement type speed reducer of this difference tooth;
Fig. 2 is an input shaft and the schematic representation that contacts of external gear.
1 input shaft, 2 external gears
3 internal gears, 4 point of contact
5 centers of circle
Embodiment
Like Fig. 1, the engagement type speed reducer of poor tooth shown in Figure 2, include device body, this device body is provided with input shaft 1, and its specialization is: the input shaft 1 outer external gear 2 that is equipped with that the utility model adopted.Specifically, said external gear periphery is distributed with internal gear.The flank of tooth of external gear distributes outwardly, and the flank of tooth of internal gear distributes inwardly.
With regard to the utility model one preferred implementation, consider and effectively to realize the engagement of difference tooth that the utility model is distributed with the free travel space between input shaft 1 outer wall and external gear 2 inwalls.Like this, in the operation process of reality, input shaft 1 moves in a circle in the free travel space, and input shaft 1 outer wall and external gear 2 inwalls are provided with point of contact 4 during circular movement.Like this, can drive external gear 2 and carry out being meshing with each other of tooth and tooth with internal gear 3, because input shaft 1 revolution one whole circle, point of contact 4 just reaches an extreme value from the center of circle 5, promptly walks a tooth, thereby reaches the effect of deceleration, and is promptly as shown in Figure 2.
Further, consider cooperating and can reduce friction loss between internal gear 3 and the external gear 2, satisfy the accurate engagement between tooth and the tooth simultaneously, the height of projection of the external gear teeth that the utility model adopts is smaller or equal to the indent gap depth between the internal gear teeth.
Again further, the diameter of bore of the internal gear 3 that adopts of the utility model radius that is not equal to input shaft 1 adds the radius of taking exercises in input shaft 1 center.Can let input shaft 1 have like this, promote the efficient of poor tooth engagement with many free travel spaces.In the operation process of reality, if the external gear number that external gear 2 outer walls distribute is 50, then reduction speed ratio is 50: 1.Thus, can satisfy the needs of various applications through adjusting the deceleration control that different number of gears reaches any ratio.
Can find out through above-mentioned character express, behind employing the utility model,, move in a circle in the free travel space through input shaft and can realize high-precision deceleration control owing to adopted the mode of poor tooth engagement.What is more important can be through adjusting the deceleration control that different number of gears reaches any ratio; Realize the autonomous size of selecting reduction speed ratio and size; When producing in enormous quantities, reduced the difficulty of processing of part, promoted the precision of novel speed reducer, thereby improved manufacturing efficiency.
Claims (3)
1. differ from the engagement type speed reducer of tooth, include device body, described device body is provided with input shaft, it is characterized in that: described input shaft is distributed with external gear, and said external gear periphery is distributed with internal gear; The flank of tooth of said external gear distributes outwardly, and the flank of tooth of said internal gear distributes inwardly.
2. the engagement type speed reducer of poor tooth according to claim 1 is characterized in that: be distributed with the free travel space between described input shaft outer wall and the external gear inwall.
3. the engagement type speed reducer of poor tooth according to claim 1 is characterized in that: the height of projection of said external gear teeth is smaller or equal to the indent gap depth between the internal gear teeth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203457256U CN202220834U (en) | 2011-09-15 | 2011-09-15 | Differential gear meshing type speed reducing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203457256U CN202220834U (en) | 2011-09-15 | 2011-09-15 | Differential gear meshing type speed reducing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202220834U true CN202220834U (en) | 2012-05-16 |
Family
ID=46042861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203457256U Expired - Lifetime CN202220834U (en) | 2011-09-15 | 2011-09-15 | Differential gear meshing type speed reducing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202220834U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345705A (en) * | 2011-09-15 | 2012-02-08 | 苏州绿的谐波传动科技有限公司 | Differential teeth engaged speed reducing device |
-
2011
- 2011-09-15 CN CN2011203457256U patent/CN202220834U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345705A (en) * | 2011-09-15 | 2012-02-08 | 苏州绿的谐波传动科技有限公司 | Differential teeth engaged speed reducing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 215001 No. 19 Muxu West Road, Mudu Town, Wuzhong District, Suzhou City, Jiangsu Province Patentee after: Suzhou Green Harmonic Drive Technology Co., Ltd. Address before: 215001 No. 19 Muxu West Road, Mudu Town, Wuzhong District, Suzhou City, Jiangsu Province Patentee before: Suzhou Lvdi Harmonic Transmission Technology Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120516 |
|
| CX01 | Expiry of patent term |