CN208348435U - A kind of timing sprocket - Google Patents
A kind of timing sprocket Download PDFInfo
- Publication number
- CN208348435U CN208348435U CN201820917469.5U CN201820917469U CN208348435U CN 208348435 U CN208348435 U CN 208348435U CN 201820917469 U CN201820917469 U CN 201820917469U CN 208348435 U CN208348435 U CN 208348435U
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- CN
- China
- Prior art keywords
- sprocket
- keyway
- axis hole
- timing sprocket
- sprocket body
- 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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Abstract
The utility model provides a kind of timing sprocket, belongs to engine component technical field.It solves the problems, such as that existing timing sprocket assembly efficiency is low.This timing sprocket includes sprocket body and the axis hole that is arranged in the middle part of sprocket body, raised annulus on the end of sprocket body side, annulus, which is located on the upper surface at axis hole, is provided with the concave part being recessed inwardly, keyway there are two symmetrical eccentric setting is set on the inner wall of axis hole, the length A of keyway is less than the length B of concave part, and the edge of keyway is provided with rounded corner.The utility model has the advantages that assembly efficiency is high.
Description
Technical field
The utility model belongs to engine component technical field, is related to a kind of timing sprocket.
Background technique
Timing sprocket functions as Timing Belt, is the important component of engine air distribution system, by with song
The connection of axis simultaneously cooperates certain transmission ratio to guarantee the accurate of inlet and outlet time.Timing sprocket plays inside engine
Strength is passed to corresponding parts under the drive of crankshaft by the effect of one " bridge ".
Due to the design of traditional timing sprocket structure, crankshaft and timing sprocket are directly assembled, simultaneously because sprocket wheel
The end of two sides is identical, and in assembly, worker can not distinguish assembly side, causes the reduction of assembly efficiency, while the assembly of mistake
Mode may cause the damage of crankshaft and timing sprocket, increase assembly cost.
Summary of the invention
The purpose of this utility model is that it is high to provide a kind of assembly efficiency for the above-mentioned problems in the prior art
Timing sprocket.
The purpose of this utility model can be realized by the following technical scheme: a kind of timing sprocket, including sprocket body and
Axis hole in the middle part of sprocket body is set, which is characterized in that raised annulus on the end of the sprocket body side,
The annulus, which is located on the upper surface at axis hole, is provided with the concave part being recessed inwardly, and is provided on the inner wall of the axis hole
The keyway of two symmetrical eccentric settings, the length A of the keyway are less than the length B of concave part, and the edge of the keyway 5 is equal
It is provided with rounded corner.
In a kind of above-mentioned timing sprocket, several balance holes are provided on the sprocket body.
Compared with prior art, this timing sprocket is provided with annulus on the end of sprocket body side, is arranged on annulus
Fluted portion, there are two the keyways 5 of symmetrical eccentric setting for setting on axis hole.Due to the setting of symmetrical eccentric keyway 5, make timing chain
Assembly between item and crankshaft is simpler and will not malfunction.
Detailed description of the invention
Fig. 1 is the overlooking structure figure in this timing sprocket.
Fig. 2 is the schematic cross-sectional view of the A-A of Fig. 1 in this timing sprocket.
In figure, 1, sprocket body；2, axis hole；3, annulus；4, concave part；5, keyway；6, balance hole.
Specific embodiment
It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these examples.
As shown in Figure 1 and Figure 2, this timing sprocket includes sprocket body 1 and the axis hole 2 that 1 middle part of sprocket body is arranged in, chain
Raised annulus 3 on the end of 1 side of wheel body, annulus 3, which is located to be provided on the upper surface at axis hole 2, to be recessed inwardly
Concave part 4, there are two the keyways 5 of symmetrical eccentric setting, the length A of keyway 5 to be less than concave part 4 for setting on the inner wall of axis hole 2
The edge of length B, keyway 5 are provided with rounded corner.
As preferred structure, several balance holes 6 are provided on sprocket body 1.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Although the arts such as sprocket body 1, axis hole 2, annulus 3, concave part 4, keyway 5, balance hole 6 are used more herein
Language, but it does not exclude the possibility of using other terms.The use of these items is only for be more convenient to describe and explain this
The essence of utility model；It is contrary to the spirit of the present invention to interpret them as any one of the additional limitations.
Claims (2)
1. a kind of timing sprocket, including sprocket body (1) and the axis hole (2) being arranged in the middle part of sprocket body (1), feature exists
In raised annulus (3), the annulus (3) are located at axis hole (2) on the end of the sprocket body (1) side
Upper surface on be provided with the concave part (4) being recessed inwardly, setting is set there are two symmetrical bias on the inner wall of the axis hole (2)
The keyway (5) set, the length A of the keyway (5) are less than the length B of concave part (4), and the edge of the keyway (5) is all provided with
It is equipped with rounded corner.
2. a kind of timing sprocket according to claim 1, which is characterized in that the sprocket body (1) if on be provided with
Dry balance hole (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820917469.5U CN208348435U (en) | 2018-06-13 | 2018-06-13 | A kind of timing sprocket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820917469.5U CN208348435U (en) | 2018-06-13 | 2018-06-13 | A kind of timing sprocket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208348435U true CN208348435U (en) | 2019-01-08 |
Family
ID=64883218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820917469.5U Active CN208348435U (en) | 2018-06-13 | 2018-06-13 | A kind of timing sprocket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208348435U (en) |
-
2018
- 2018-06-13 CN CN201820917469.5U patent/CN208348435U/en active Active
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