CN105673118A - Variable valve timing device of internal combustion engine - Google Patents
Variable valve timing device of internal combustion engine Download PDFInfo
- Publication number
- CN105673118A CN105673118A CN201410677439.8A CN201410677439A CN105673118A CN 105673118 A CN105673118 A CN 105673118A CN 201410677439 A CN201410677439 A CN 201410677439A CN 105673118 A CN105673118 A CN 105673118A
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- CN
- China
- Prior art keywords
- spacing groove
- variable valve
- valve timing
- combustion engine
- timing device
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Abstract
The invention relates to a variable valve timing device of an internal combustion engine. The variable valve timing device comprises a front cover and an outer housing which is matched with the front cover to form a spring cavity. Multiple limiting grooves are formed in the front cover. Riveting openings matched with the limiting grooves in the position are formed in the outer housing. Compensation notches used for relieving the bearing force of the outer housing are further formed in the upper portions of the riveting openings. The variable valve timing device of the internal combustion engine has the advantages that the needed assembly effect can be achieved and the stress requirement can be met by means of the structural design of parts, the requirement for equipment and the machining precision is lowered, the production cost is reduced, and the working efficiency is improved.
Description
Technical field
The present invention relates to a kind of internal-combustion engine variable valve timing device, for adjustment cam axle phase angle.
Background technology
Known vane-type internal combustion engine variable valve timing apparatus, stator liquid chamber is divided into room, two chambeies, rotor (being connected with camshaft) is driven by both sides being imported corresponding pressure medium, making camshaft produce phase change relative to bent axle, the circulation of medium is realized by the commutation control of electromagnetic hydraulic valve.
Existing a kind of internal-combustion engine variable valve timing device, one end is provided with torsion spring, is connected with an outer cover in one end of its fixed face, and this outer cover has cylindrical mating surface, for forming spring chamber between the cylindrical receiving surface of protecgulum.
The connection of outer cover and protecgulum makes outer cover generation elasticity and plastic deformation by radial press-fit, its unrelieved stress makes outer cover fit snugly on protecgulum, in the prior art in order to ensure press-fit quality, require higher for protecgulum with the tolerance on fit of outer cover radial direction and relative rotation can occur between outer cover and protecgulum, be unfavorable for the assembling of part. Therefore, it should provide a kind of new technical scheme to solve the problem.
Summary of the invention
It is an object of the invention to: for above-mentioned deficiency, it is provided that the internal-combustion engine variable valve timing device of a kind of adjustment cam axle phase angle.
For achieving the above object, the technical solution used in the present invention is:
A kind of internal-combustion engine variable valve timing device, this positive timer comprises protecgulum and complements each other to form the outer cover of spring chamber with protecgulum, and protecgulum is provided with multiple spacing groove, and outer cover is provided with the riveted joint mouth that the position with spacing groove is mated mutually.
In technique scheme, by making riveted joint mouth produce elasticity and viscous deformation the radial pressure of riveted joint mouth, multiple projections that outer cover elasticity and viscous deformation produce fall into the spacing groove of protecgulum, limit the mutual rotation between protecgulum and outer cover.
The top of riveted joint mouth is also provided with the compensation breach for alleviating outer cover holding capacity.
In technique scheme, compensate breach arrange can reduce that stressed area reduces outer cover bear stress, prevent that stress is excessive causes material to ftracture; Reduce the quality of fit requirement between outer cover and protecgulum simultaneously.
Being provided with two inwardly protruded guide paths on the riveted joint mouth of outer cover, the circumference arc length between two guide paths is less than or equals the arc length of the spacing groove of correspondence, and the degree of depth of guide path is not more than the degree of depth of spacing groove.
Spacing groove is evenly equally distributed on protecgulum circumferentially.
Realize transition by fillet between spacing groove and the circumference of protecgulum to be connected.
The arc length of spacing groove is 5-16mm, groove depth 0.5-4mm.
The quantity of spacing groove is 2-5.
Due to the application of technique scheme, the present invention compared with prior art tool have the following advantages: assembling effect and the stress requirement that just can be reached needs by the structure design of component itself, reduce the requirement of equipment and working accuracy, saved production cost, and working efficiency.
Accompanying drawing explanation
Accompanying drawing 1 is the general assembly drawing of the present invention.
Accompanying drawing 2 is the schematic diagram of the protecgulum of the present invention.
Accompanying drawing 3 is the part enlarged view of the protecgulum of the present invention.
Accompanying drawing 4 is the schematic diagram of the outer cover of the present invention.
Accompanying drawing 5 is the front view of the outer cover of the present invention.
Accompanying drawing 6 is the principle of work figure of the present invention.
In above accompanying drawing: 1, protecgulum, 2, outer cover, 3, spacing groove, 4, riveted joint mouth, 5, guide path, 6, fall fillet, 7, spring chamber, 8, compensate breach.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described:
Embodiment one:
As shown in Figures 1 to 6, a kind of internal-combustion engine variable valve timing device of the present invention, this positive timer comprises protecgulum 1 and complements each other to form the outer cover 2 of spring chamber 7 with protecgulum 1, protecgulum 1 is provided with multiple spacing groove 3, outer cover 2 is provided with the riveted joint mouth 4 that the position with spacing groove 3 is mated mutually, by making riveted joint mouth 4 produce elasticity and viscous deformation the radial pressure of riveted joint mouth 4, multiple projections that outer cover 2 elasticity and viscous deformation produce fall into the spacing groove 3 of protecgulum, limit the mutual rotation between protecgulum 1 and outer cover 2; The top of riveted joint mouth 4 is also provided with the compensation breach 8 for alleviating outer cover holding capacity, compensate breach 8 arrange can reduce that stressed area reduces outer cover bear stress, prevent that stress is excessive causes material to ftracture; Reduce the quality of fit requirement between outer cover 2 and protecgulum 1 simultaneously; The circumference arc length being provided with between two inwardly protruded guide paths, 5, two guide paths 5 on the riveted joint mouth 4 of outer cover 2 is less than or equals the arc length of the spacing groove 3 of correspondence, and the degree of depth of guide path 5 is not more than the degree of depth of spacing groove 3; Spacing groove 3 is evenly equally distributed on protecgulum 1 circumferentially, realizes transition by fillet 6 and be connected between spacing groove 3 and the circumference of protecgulum 1; The arc length of spacing groove 3 is 5mm, groove depth 0.5mm; The quantity of spacing groove 3 is 2.
Just can be reached assembling effect and the stress requirement of needs by the structure design of component itself, reduce the requirement of equipment and working accuracy, saved production cost, and working efficiency.
Embodiment two:
As shown in Figures 1 to 6, a kind of internal-combustion engine variable valve timing device of the present invention, this positive timer comprises protecgulum 1 and complements each other to form the outer cover 2 of spring chamber with protecgulum 1, protecgulum 1 is provided with multiple spacing groove 3, outer cover 2 is provided with the riveted joint mouth 4 that the position with spacing groove 3 is mated mutually, by making riveted joint mouth 4 produce elasticity and viscous deformation the radial pressure of riveted joint mouth 4, multiple projections that outer cover 2 elasticity and viscous deformation produce fall into the spacing groove 3 of protecgulum, limit the mutual rotation between protecgulum 1 and outer cover 2; The top of riveted joint mouth 4 is also provided with the compensation breach 8 for alleviating outer cover holding capacity, compensate breach 8 arrange can reduce that stressed area reduces outer cover bear stress, prevent that stress is excessive causes material to ftracture; Reduce the quality of fit requirement between outer cover 2 and protecgulum 1 simultaneously; The circumference arc length being provided with between two inwardly protruded guide paths, 5, two guide paths 5 on the riveted joint mouth 4 of outer cover 2 is less than or equals the arc length of the spacing groove 3 of correspondence, and the degree of depth of guide path 5 is not more than the degree of depth of spacing groove 3;Spacing groove 3 is evenly equally distributed on protecgulum 1 circumferentially, realizes transition by fillet 6 and be connected between spacing groove 3 and the circumference of protecgulum 1; The arc length of spacing groove 3 is 10mm, groove depth 2mm; The quantity of spacing groove 3 is 3.
Just can be reached assembling effect and the stress requirement of needs by the structure design of component itself, reduce the requirement of equipment and working accuracy, saved production cost, and working efficiency.
Embodiment three:
As shown in Figures 1 to 6, a kind of internal-combustion engine variable valve timing device of the present invention, this positive timer comprises protecgulum 1 and complements each other to form the outer cover 2 of spring chamber with protecgulum 1, protecgulum 1 is provided with multiple spacing groove 3, outer cover 2 is provided with the riveted joint mouth 4 that the position with spacing groove 3 is mated mutually, by making riveted joint mouth 4 produce elasticity and viscous deformation the radial pressure of riveted joint mouth 4, multiple projections that outer cover 2 elasticity and viscous deformation produce fall into the spacing groove 3 of protecgulum, limit the mutual rotation between protecgulum 1 and outer cover 2; The top of riveted joint mouth 4 is also provided with the compensation breach 8 for alleviating outer cover holding capacity, compensate breach 8 arrange can reduce that stressed area reduces outer cover bear stress, prevent that stress is excessive causes material to ftracture; Reduce the quality of fit requirement between outer cover 2 and protecgulum 1 simultaneously; The circumference arc length being provided with between two inwardly protruded guide paths, 5, two guide paths 5 on the riveted joint mouth 4 of outer cover 2 is less than or equals the arc length of the spacing groove 3 of correspondence, and the degree of depth of guide path 5 is not more than the degree of depth of spacing groove 3; Spacing groove 3 is evenly equally distributed on protecgulum 1 circumferentially, realizes transition by fillet 6 and be connected between spacing groove 3 and the circumference of protecgulum 1; The arc length of spacing groove 3 is 16mm, groove depth 4mm; The quantity of spacing groove 3 is 4.
Just can be reached assembling effect and the stress requirement of needs by the structure design of component itself, reduce the requirement of equipment and working accuracy, saved production cost, and working efficiency
The above is the preferred embodiment of the present invention; it is noted that for those skilled in the art, under the prerequisite not departing from principle of the present invention; can also making some improvement or replacement, these improve or replace and also should be considered as protection scope of the present invention.
Claims (7)
1. an internal-combustion engine variable valve timing device, it is characterized in that: this positive timer comprises protecgulum and complements each other to form the outer cover of spring chamber with protecgulum, being provided with multiple spacing groove on described protecgulum, described outer cover is provided with the riveted joint mouth that the position with spacing groove is mated mutually.
2. a kind of internal-combustion engine variable valve timing device according to claim 1, it is characterised in that: the top of described riveted joint mouth is also provided with the compensation breach for alleviating outer cover holding capacity.
3. a kind of internal-combustion engine variable valve timing device according to claim 2, it is characterized in that: the riveted joint mouth of described outer cover is provided with two inwardly protruded guide paths, circumference arc length between described two guide paths is less than or equals the arc length of the spacing groove of correspondence, and the degree of depth of guide path is not more than the degree of depth of spacing groove.
4. a kind of internal-combustion engine variable valve timing device according to claim 3, it is characterised in that: described spacing groove is evenly equally distributed on protecgulum circumferentially.
5. a kind of internal-combustion engine variable valve timing device according to claim 4, it is characterised in that: realize transition by fillet between described spacing groove and the circumference of protecgulum and it is connected.
6. a kind of internal-combustion engine variable valve timing device according to claim 5, it is characterised in that: the arc length of described spacing groove is 5-16mm, groove depth 0.5-4mm.
7. a kind of internal-combustion engine variable valve timing device according to claim 6, it is characterised in that: the quantity of described spacing groove is 2-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410677439.8A CN105673118A (en) | 2014-11-21 | 2014-11-21 | Variable valve timing device of internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410677439.8A CN105673118A (en) | 2014-11-21 | 2014-11-21 | Variable valve timing device of internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105673118A true CN105673118A (en) | 2016-06-15 |
Family
ID=56958346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410677439.8A Pending CN105673118A (en) | 2014-11-21 | 2014-11-21 | Variable valve timing device of internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105673118A (en) |
-
2014
- 2014-11-21 CN CN201410677439.8A patent/CN105673118A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160615 |
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| WD01 | Invention patent application deemed withdrawn after publication |