CN202165135U - Timing aligning structure of timing belt pulley or chain wheel of engine - Google Patents
Timing aligning structure of timing belt pulley or chain wheel of engine Download PDFInfo
- Publication number
- CN202165135U CN202165135U CN2011202565732U CN201120256573U CN202165135U CN 202165135 U CN202165135 U CN 202165135U CN 2011202565732 U CN2011202565732 U CN 2011202565732U CN 201120256573 U CN201120256573 U CN 201120256573U CN 202165135 U CN202165135 U CN 202165135U
- Authority
- CN
- China
- Prior art keywords
- timing belt
- belt pulley
- positioning boss
- sprocket wheel
- positioning
- 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 - Fee Related
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Abstract
The utility model provides a timing aligning structure of a timing belt pulley or chain wheel of an engine, which comprises the timing belt pulley or chain wheel, a mounting shaft, a gasket and a mounting bolt. The timing belt pulley or chain wheel is fixed on the mounting shaft through the gasket and the mounting bolt. One end of the timing belt pulley or chain wheel is provided with a mounting sleeve, and the end face of the mounting sleeve is provided with a positioning boss. An assembling end of the mounting shaft and the timing belt pulley or chain wheel is provided with a mounting shaft neck, and the timing belt pulley or chain wheel is sleeved on the mounting shaft neck through the mounting sleeve. A positioning groove matched with the positioning boss is designed on the mounting shaft, and the positioning boss is inserted in the positioning groove on the mounting shaft. During assembling, the mounting sleeve is sleeved in the mounting shaft neck, and simultaneously, the positioning boss is aligned to the positioning groove on the mounting shaft to be inserted in. The gasket is mounted, the mounting bolt is fastened, and accordingly the alignment of timing is achieved. Compared with a traditional key connection or positioning pin connection mode, the structure reduces parts and cost, lowers cost and is more convenient to assemble and process.
Description
Technical field
The utility model relates to engine valve actuating mechanism, the means of fixation in correct time when being specifically related to engine timing belt wheel or timing sprocket assembling.
Background technique
Traditional engine Timing Belt wheel or timing sprocket are (for ease of narration; Below only the mode of using belt pulley is described, chain sprocket structure is identical with the belt sheave structure fixation principle) be to realize the aligning in correct time when assembling through the cooperation of key or the cooperation of locating stud.That is: keyway of design on the belt pulley installation shaft is installed to key in the keyway of axle earlier during assembling, and the cooperation through key when belt pulley is installed realizes aligning of correct time; When using the locating stud location, then be Design Orientation pin-and-hole on installation shaft and belt pulley, both position through locating stud during installation.
More than adopting key to connect when the structure that is connected with locating stud is installed needs fitted key or locating stud, and assembling is comparatively complicated, and the use of key or locating stud makes the cost of product increase to some extent.
Summary of the invention
The utility model design aligns structure a kind of correct time simple, that be convenient to assemble, when Timing Belt wheel or timing sprocket are installed, need not use key or locating stud, directly positions through the cooperation between installation shaft and the belt pulley.
The technological scheme that the utility model adopted is following:
Align structure the correct time of a kind of engine timing belt wheel or sprocket wheel, and it comprises Timing Belt wheel or sprocket wheel, installation shaft, pad and construction bolt, and Timing Belt wheel or sprocket wheel are fixed on the installation shaft through pad and construction bolt; Said Timing Belt wheel or sprocket wheel one end have installing sleeve, are provided with positioning boss at the end face of installing sleeve; The assembling end of said installation shaft and Timing Belt wheel or sprocket wheel has the installation axle journal, and said Timing Belt wheel or sprocket wheel are enclosed within through installing sleeve and install on the axle journal; On installation shaft, be designed with the positioning groove that matches with positioning boss, positioning boss inserts in the positioning groove on the installation shaft.
During assembling, installing sleeve is inserted in the installation axle journal, the positioning groove on the positioning boss positive alignment installation shaft is inserted, pad and urgent construction bolt are installed, can realize aligning of correct time.
The utility model is simple in structure; Assembly technology is convenient, utilizes the boss of Timing Belt wheel or sprocket wheel and installation shaft self and groove structure can realize aligning of assembling in correct time, need not to install additional locating stud or positioning key again; Aligning structure this correct time connects or the locating stud Placement than traditional key; Reduced part, cost decreases, and assembly technology is convenient.
Description of drawings
Fig. 1 is the structure explosive view of the utility model;
Fig. 2 is the section of structure of the utility model;
Fig. 3 is the partial structurtes enlarged view of the utility model;
Among the figure 1, installation shaft, 11, positioning groove, 12, axle journal is installed, 2, belt pulley, 21, installing sleeve, 22, positioning boss, 23, chamfering, 24, chamfering, 3, pad, 4, construction bolt.
Embodiment
Further specify the structure of the utility model below in conjunction with accompanying drawing:
Referring to Fig. 1, Fig. 2 and Fig. 3, align structure and comprise belt pulley 2, installation shaft 1, pad 3 and construction bolt 4 correct time that the utility model proposes.Wherein, belt pulley 2 is fixed on the installation shaft 1 through pad 3 and construction bolt 4.
On belt pulley 2, be designed with installing sleeve 21, the end face of installing sleeve is designed with positioning boss 22, accordingly, on installation shaft 1, is designed with positioning groove 11 and axle journal 12 is installed, for ease of design first chamfering 23 and second chamfering 24 on positioning boss are installed.23 designs of first chamfering are at positioning boss 22 front ends, and 24 designs of second chamfering form the heavy stand with respect to installing sleeve 21 at the binding site of rear end and installing sleeve 21 between two chamferings.The heavy stand that when belt pulley is installed, forms between first chamfering 23, second chamfering 24 and two chamferings assembles positioning boss 22 and positioning groove 11 more easily.
During assembling; Belt pulley 2 is inserted in installation axle journal 12 through installing sleeve 21, the positioning groove 11 on the positioning boss 22 positive alignment installation shaft 1 is inserted, pad 3 is installed at the other end of belt pulley 2; And axial urgent construction bolt 4, can realize aligning of correct time.
In this structure, according to the difference of required precision in correct time, the accuracy of manufacturing of positioning boss 22 and positioning groove 11 can be adjusted, and can select to use casting if required precision is low, direct forming in the casting of belt pulley and axle or when forging.If but the mode of the higher then selector of required precision tool processing guarantees that also can positioning boss 22 and positioning groove 11 be designed to the form of interference fit or transition fit, detail design can be adjusted according to usage requirement.
When reality is used; The fit shapes of positioning boss 22 and positioning groove 11 can also be adjusted according to technology and assembling; Positioning boss and groove can be designed to the rectangle fit shapes, also can be designed as circular fit shapes, if the counterface between belt pulley and the axle need transmit than high pulling torque; Can also boss and groove structure be optimized for the fit shapes of saw tooth structure, when aligning correct time, increase the friction factor of end face.
Those skilled in the art should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the specification that the utility model just is described; The utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these variations and improvement all fall in the utility model scope that requires protection.The utility model requires protection domain to be defined by claims and equivalent thereof.
Claims (5)
1. align structure the correct time of engine timing belt wheel or sprocket wheel; It comprises Timing Belt wheel or sprocket wheel (2), installation shaft (1), pad (3) and construction bolt (4), and Timing Belt wheel (2) or sprocket wheel are fixed on the installation shaft (1) through pad (3) and construction bolt (4); It is characterized in that: said Timing Belt wheel (2) or sprocket wheel one end have installing sleeve (21), are provided with positioning boss (22) at the end face of installing sleeve (21); Said installation shaft (1) has installation axle journal (12) with the assembling end of Timing Belt wheel (2) or sprocket wheel, and said Timing Belt wheel (2) or sprocket wheel are enclosed within through installing sleeve (21) and install on the axle journal (12); On installation shaft (1), be designed with the positioning groove (11) that matches with positioning boss (22), positioning boss (22) inserts in the positioning groove (11) on the installation shaft (1).
2. align structure the correct time of engine timing belt wheel according to claim 1 or sprocket wheel, it is characterized in that: on positioning boss (22), be designed with chamfering.
3. align structure the correct time of engine timing belt wheel according to claim 2 or sprocket wheel; It is characterized in that: said chamfering has two; First chamfering (23) design is at positioning boss (22) front end; Second chamfering (24) design forms the heavy stand with respect to installing sleeve (21) at the binding site of rear end and installing sleeve (21) between two chamferings.
4. align structure the correct time according to claim 1,2 or 3 described engine timing belt wheels or sprocket wheel, it is characterized in that: said positioning boss (22) is interference fit or transition fit relation with positioning groove (11).
5. align structure the correct time according to claim 1,2 or 3 described engine timing belt wheels or sprocket wheel, it is characterized in that: the fit shapes of said positioning boss (22) and positioning groove (11) is rectangle fit shapes, circular fit shapes or zigzag fashion fit shapes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202565732U CN202165135U (en) | 2011-07-20 | 2011-07-20 | Timing aligning structure of timing belt pulley or chain wheel of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202565732U CN202165135U (en) | 2011-07-20 | 2011-07-20 | Timing aligning structure of timing belt pulley or chain wheel of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202165135U true CN202165135U (en) | 2012-03-14 |
Family
ID=45800968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202565732U Expired - Fee Related CN202165135U (en) | 2011-07-20 | 2011-07-20 | Timing aligning structure of timing belt pulley or chain wheel of engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202165135U (en) |
-
2011
- 2011-07-20 CN CN2011202565732U patent/CN202165135U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120314 Termination date: 20190720 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |