CN205089906U - Gear board of inside and outside compound meshing round pin gear type shape chain - Google Patents
Gear board of inside and outside compound meshing round pin gear type shape chain Download PDFInfo
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- CN205089906U CN205089906U CN201520860797.2U CN201520860797U CN205089906U CN 205089906 U CN205089906 U CN 205089906U CN 201520860797 U CN201520860797 U CN 201520860797U CN 205089906 U CN205089906 U CN 205089906U
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- flank profil
- outside
- round pin
- chain plate
- gear
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- Gears, Cams (AREA)
Abstract
The utility model discloses a gear board of inside and outside compound meshing round pin gear type shape chain, two intertooth space flank profils of gear board and outside flank profil in the silent chain are the convex flank profil of evagination. Has following advantage: the chain is when high -speed the operation, and it all is a process that meshes gradually with sprocket or gear board outer fringe with the sprocket to be gear inboard reason, reduces vibration and noise, effectively alleviates round pin axle, gear board, sprocket three's wearing and tearing volume, improves life.
Description
Technical field
The utility model belongs to motorcycle engine component and manufactures field, particularly a kind of toothed chain plate for compound engagement round pin formula silent chain inside and outside motorcycle engine timing system.
Background technique
At present, flank profil linearly type outside the toothed chain plate of general silent chain, especially for interior-outer compound engagement round pin formula silent chain, has good effect for stable position.But, when toothed chain plate two between cog flank profil, outside flank profil constantly replace with sprocket wheel respectively, because flank profil outside it is a straight line, and sprocket tooth form circular arc is involute, so well can not engage contact, working time one is of a specified duration, can wear and tear gradually and be out of shape outside toothed chain plate, be unfavorable for stable position.
Model utility content
Technical problem to be solved in the utility model is, a kind of toothed chain plate of inside and outside compound engagement round pin formula silent chain is provided, the advantage of original positioning stablity can not only be ensured, and optimize toothed chain plate and sprocket wheel engage effect, alleviate the wearing and tearing between bearing pin and toothed chain plate, between toothed chain plate and sprocket wheel.
For solving the problems of the technologies described above, the toothed chain plate of the inside and outside compound engagement round pin formula silent chain that the utility model provides, the toothed chain plate two between cog flank profil in described silent chain and outside flank profil are evagination circular arc flank profil.Because outside flank profil is evagination circular arc flank profil, it contacts the sprocket wheel time more earlier compared to straight-side profile with sprocket wheel time of contact, being conducive to toothed chain plate like this can stable position more early, thus shortens the Relative friction time between toothed chain plate hole and bearing pin, slows down the rate of depreciation on bearing pin surface.In addition, more early locating the impact force that can also alleviate toothed chain plate outer rim and sprocket wheel affects, and adds the working life of toothed chain plate and sprocket wheel.
As preferably, the peak of toothed chain plate two between cog evagination circular arc flank profil is perpendicular distance d between straight line type flank profil to this two between cog is 0.1-0.3mm.Ensure that toothed chain plate outer rim flank profil is one when contacting with sprocket wheel and is similar to gears meshing mode, ensure with this mutual wearing and tearing alleviating bearing pin and toothed chain plate hole, toothed chain plate tooth and sprocket tooth, thus extend the working life of toothed chain plate, sprocket wheel.
As preferably, the radius of curvature of the evagination circular arc flank profil in outside be the 3-5 of the evagination circular arc Profile radius of curvature of two between cog doubly.
After adopting above structure, the toothed chain plate of inside and outside compound engagement round pin formula silent chain of the present utility model compared with prior art, have the following advantages: chain is when high speed operation, be toothed chain plate Inner edge with sprocket wheel or toothed chain plate outer rim with sprocket wheel be all a process engaged gradually, reduce vibration and noise, effectively alleviate the wear extent of bearing pin, toothed chain plate, sprocket wheel three, improve working life.
Accompanying drawing explanation
Fig. 1 is the utility model toothed chain plate operating diagram;
Fig. 2 is the utility model toothed chain plate structure schematic diagram.
Wherein: 1, two between cog flank profils, 2, outside flank profil.
Embodiment
Below by embodiment, the utility model will be further described by reference to the accompanying drawings.
As shown in Figure 1-2, the toothed chain plate of the inside and outside compound engagement round pin formula silent chain that the present embodiment provides, toothed chain plate two between cog flank profil 1 in described silent chain and outside flank profil 2 are evagination circular arc flank profil, the peak of toothed chain plate two between cog evagination circular arc flank profil is perpendicular distance d between straight line type flank profil to this two between cog is 0.1-0.3mm, the radius of curvature of the evagination circular arc flank profil in outside be the 3-5 of the evagination circular arc Profile radius of curvature of two between cog doubly.
If d is too small, just change outer gearing into when adjacent link corner is very little, thus cause the function reducing polygon effect to reduce, if d is excessive, when adjacent link turns over 2 ∏/Z angles (Z is teeth number of sprocket), internal messing cannot change outer gearing into.So in order to not affect outer gearing in toothed chain plate, alternately, the general value of d is between 0.10-0.30mm.
Claims (3)
1. inside and outside, a toothed chain plate for compound engagement round pin formula silent chain, is characterized in that: the toothed chain plate two between cog flank profil in described silent chain and outside flank profil are evagination circular arc flank profil.
2. the toothed chain plate of inside and outside compound engagement round pin formula silent chain according to claim 1, is characterized in that: the peak of toothed chain plate two between cog evagination circular arc flank profil is perpendicular distance d between straight line type flank profil to this two between cog is 0.1-0.3mm.
3. the toothed chain plate of inside and outside compound engagement round pin formula silent chain according to claim 1 and 2, is characterized in that: the radius of curvature of the evagination circular arc flank profil in outside is 3-5 times of the evagination circular arc Profile radius of curvature of two between cog.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520860797.2U CN205089906U (en) | 2015-11-02 | 2015-11-02 | Gear board of inside and outside compound meshing round pin gear type shape chain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520860797.2U CN205089906U (en) | 2015-11-02 | 2015-11-02 | Gear board of inside and outside compound meshing round pin gear type shape chain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205089906U true CN205089906U (en) | 2016-03-16 |
Family
ID=55480594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520860797.2U Active CN205089906U (en) | 2015-11-02 | 2015-11-02 | Gear board of inside and outside compound meshing round pin gear type shape chain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205089906U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106907437A (en) * | 2017-05-08 | 2017-06-30 | 吉林大学 | A kind of New Silent Chain and its tensioning apparatus |
-
2015
- 2015-11-02 CN CN201520860797.2U patent/CN205089906U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106907437A (en) * | 2017-05-08 | 2017-06-30 | 吉林大学 | A kind of New Silent Chain and its tensioning apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |