CN107762586B - Plane spring fixing device for cam shaft middle locking VVT - Google Patents
Plane spring fixing device for cam shaft middle locking VVT Download PDFInfo
- Publication number
- CN107762586B CN107762586B CN201711176649.9A CN201711176649A CN107762586B CN 107762586 B CN107762586 B CN 107762586B CN 201711176649 A CN201711176649 A CN 201711176649A CN 107762586 B CN107762586 B CN 107762586B
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- Prior art keywords
- spring
- spring seat
- rotor
- cam shaft
- fixing device
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- 210000000078 claw Anatomy 0.000 claims description 18
- 238000000034 method Methods 0.000 abstract description 4
- 230000002159 abnormal effect Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
- F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
Abstract
The invention discloses a plane spring fixing device for a middle locking VVT of a cam shaft, which aims to solve the technical problem that the plane scroll spring fixing device for the middle locking VVT of the existing cam shaft is complex, and provides the plane scroll spring fixing device for the middle locking VVT of the cam shaft, which has the advantages that the structure is simple, the fixing of the plane scroll spring is more reliable, the assembly is simpler, the axial non-jump ring of the plane scroll spring during the working process can be ensured, the stability of the force value of the plane scroll spring can be effectively ensured, the adjusting speed and the adjusting precision (stability) of the middle locking VVT are improved, and the correct reset of the cam shaft during the abnormal shutdown of an engine is realized; the structure saves three parts such as a plane scroll spring fixing pin (or a cylindrical locating pin), a spring seat fixing pin, a spring shield and the like aiming at the traditional cam shaft middle locking VVT, simplifies the structure and the parts of the cam shaft middle locking VVT, reduces the cost, simplifies the assembly process and ensures that the service life of the assembly is more reliable.
Description
Technical Field
The invention relates to the technical field of automobile parts, in particular to a fixing device for fixing and limiting a planar spiral spring reset on a cam shaft middle locking VVT of an engine.
Background
The engine adopts a variable valve timing technology to improve the air intake charge, so that the charge coefficient is increased, the combustion is more sufficient, the torque and the power of the engine can be further improved, the fuel consumption and the emission are reduced, and the engine is one of new energy-saving and emission-reducing technologies of modern automobiles. The middle locking type VVT of the cam shaft is an execution device for upgrading the variable valve timing technology, and the plane spiral spring is arranged on the middle locking type VVT, so that the adjusting speed of the middle locking type VVT can be improved, the adjusting precision (stability) can be improved, and the cam shaft can be correctly reset when the engine is abnormally stopped.
The invention relates to a novel spring fixing device, which is used for fixing and limiting a plane scroll spring on the fixing device, so that the plane scroll spring is pre-tensioned to a certain torque and is fixedly limited on the fixing device. The axial space of the plane scroll spring is limited in a certain space by the fixing device, and the plane scroll spring does not jump or merge. The spring force value is stable.
Disclosure of Invention
The invention aims to provide a plane spring fixing device for locking a VVT in the middle of a cam shaft, which solves the problems in the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a locking VVT is with plane spring fixing device in middle of camshaft, includes spring holder and rotor, be provided with plane scroll spring on the spring holder, wherein the spring holder is the cassette structure that the centre bore was opened to the bottom surface and is equipped with the little boss in circular bottom, the spring holder includes upper portion plane structure and lower part second grade cylinder step shape, and wherein second grade cylinder step shape includes spring holder lower part cylinder structure and spring holder upper portion cylinder structure, spring holder lower part cylinder structure cooperates with rotor interference hole, and the little boss in spring holder bottom is with the relative cooperation of a directional hole on the rotor hole platform, makes the spring holder circumference go up spacingly, and the curved hook of inner circle of plane scroll spring hooks the last turn-in hook of cylinder on the spring holder, and the outer lane of plane scroll spring is curved to be hooked and is turned up the supporting jaw on the spring holder, and the external diameter edge of spring holder is equipped with two limiting jaws, limit the radial boundary of plane scroll spring on the two limiting jaws on the external diameter of spring holder.
Preferably, the supporting claw is a spring seat supporting claw, and the spring seat supporting claw is a turned-up supporting structure which is arranged in parallel or perpendicular to the curved hook of the outer ring of the plane scroll spring.
Preferably, the periphery of the rotor is respectively provided with an assembly and a half assembly, wherein the rotor interference hole corresponds to the central holes of the assembly and the half assembly, and the spring seat is in interference fit with the rotor through the central holes of the half assembly.
Preferably, the inner surfaces of the two limiting claws on the outer diameter of the spring seat are the same as the surface shape of the plane scroll spring.
Preferably, the shape of the small bottom boss is the same as the shape of the orientation hole.
Preferably, the outer surface of the cylindrical structure at the lower part of the spring seat is a bottom surface of the spring seat, and when the spring seat is in interference fit with the rotor, the bottom surface of the spring seat is in fit with the bottom surface of the inner hole of the rotor.
Compared with the prior art, the invention has the beneficial effects that:
the invention aims to solve the technical problem that the traditional plane scroll spring fixing device for the middle locking VVT of the cam shaft is complex, and provides the plane scroll spring fixing device for the middle locking VVT of the cam shaft, which has the advantages that the structure is simple, the fixing of the plane scroll spring is more reliable, the assembly is simpler, the axial non-jump ring of the plane scroll spring during working can be ensured, the stable force value of the plane scroll spring can be effectively ensured, the adjusting speed and the adjusting precision (stability) of the middle locking VVT are improved, and the cam shaft is correctly reset when the engine is abnormally stopped; the structure saves three parts such as a plane scroll spring fixing pin (or a cylindrical locating pin), a spring seat fixing pin, a spring shield and the like aiming at the traditional cam shaft middle locking VVT, simplifies the structure and the parts of the cam shaft middle locking VVT, reduces the cost, simplifies the assembly process and ensures that the service life of the assembly is more reliable.
Drawings
FIG. 1 is a schematic view of a spring seat assembly according to the present invention;
FIG. 2 is a perspective view of a spring seat assembly according to the present invention;
FIG. 3 is a schematic view of a rotor structure according to the present invention;
FIG. 4 is a cross-sectional view of a spring seat assembly, rotor and assembly mounting structure of the present invention;
FIG. 5 is a top view of the spring seat of the present invention mounted on an assembly;
FIG. 6 is a schematic view of the parallel arrangement of the support pawl and the flat spiral spring of the present invention.
In the figure: 1, a spring seat; 2 plane scroll springs; 3 small bosses; 4, inwards turning the bent hooks; 5, bending the inner ring; 6, limiting claws on the outer diameter of the spring seat; 7, supporting claws; 8, bending hooks on the outer ring; 12 orientation holes; 13, interference holes; 14 cylindrical fixing pins; 15 spring seat assembly; 16 half assemblies; 17 assembly; a rotor 18; 19 mounting planes of spring seats; 20 spring seat bottom surface; 21 rotor inner bore bottom surface.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-6, the present invention provides a technical solution:
the plane spring fixing device for the camshaft middle locking VVT comprises a spring seat 1 and a rotor 18, wherein a plane scroll spring 2 is arranged on the spring seat 1, the spring seat 1 is a clamping seat structure with a central hole formed in the bottom surface and provided with a small circular bottom boss 3, the spring seat 1 comprises an upper part plane structure and a lower part two-stage cylinder step shape, the two-stage cylinder step shape comprises a lower part cylinder structure of the spring seat and an upper part cylinder structure of the spring seat, the lower part cylinder structure of the spring seat is matched with a rotor interference hole 13, the small circular bottom boss 3 of the spring seat is matched with a directional hole 12 on a rotor inner hole platform relatively, the circumference of the spring seat 1 is limited, an inner turn hook 4 on a cylinder of the spring seat 1 is hooked by an inner turn hook 5 of the plane scroll spring 2, an outer turn hook 8 of the plane scroll spring 2 hooks a turn-up supporting claw 7 on the spring seat 1, the outer diameter edge of the spring seat is provided with two limiting claws, and the upper limiting claw 6 of the outer diameter of the spring seat limits the radial boundary of the plane scroll spring.
PREFERRED EMBODIMENTS
The plane spring fixing device for the middle locking VVT of the cam shaft comprises a spring seat 1 and a plane scroll spring 2; the inner ring of the plane scroll spring 2 is in interference fit with the upper cylindrical structure of the spring seat 1, the inner ring bent hook 5 of the plane scroll spring 2 is hung on the cylindrical inward bent hook 4 on the spring seat 1, and then the spring seat assembly 15 is assembled by rotating the outer ring bent hook 8 of the plane scroll spring 2 to the supporting claw 7 of the spring seat 1; when the formed spring seat assembly 15 and the half assembly 16 are installed, the lower cylindrical structure of the spring seat 1 faces the interference hole 13 of the rotor 18, the small boss 3 at the bottom of the spring seat 1 is aligned with the directional hole 12 on the inner hole platform of the rotor 18, the outer ring bent hook 8 of the plane scroll spring 2 of the spring seat assembly 15 is aligned with the cylindrical fixed pin 14 on the half assembly 16, and then the installation plane 19 of the spring seat is pressed until the bottom surface 20 of the spring seat is completely attached to the bottom surface 21 of the inner hole of the rotor;
the supporting claw 7 in this embodiment may be a turned-up supporting structure disposed parallel to or perpendicular to the curved hook of the outer ring of the flat spiral spring, and only needs to ensure that the two are attached and hooked.
The spring seat 1 is ingenious in structure, is a stamping workpiece, and is simple in processing technology, high in efficiency and lowest in cost. The structure not only greatly reduces the number of parts, but also can make the best use of the assembly space, and the flat spiral spring is assembled with the spring seat first, so that the assembly process can be greatly simplified, the production efficiency is improved, and the automatic production is facilitated.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. The utility model provides a locking VVT is with plane spring fixing device in middle of camshaft, includes spring holder and rotor, its characterized in that: the flat scroll spring is arranged on the spring seat, the spring seat is a clamping seat structure with a central hole on the bottom surface and a small circular bottom boss, the spring seat comprises an upper part flat structure and a lower part second-stage cylindrical stepped shape, the second-stage cylindrical stepped shape comprises a lower cylindrical structure of the spring seat and an upper cylindrical structure of the spring seat, the lower cylindrical structure of the spring seat is matched with a rotor interference hole, the small bottom boss of the spring seat is matched with a directional hole on a rotor inner hole platform relatively, the circumference of the spring seat is limited, an inner ring bent hook of the flat scroll spring hooks a turned-in hook on the upper cylindrical structure of the spring seat, an outer ring bent hook of the flat scroll spring hooks a turned-in supporting claw on the spring seat, two limiting claws are arranged on the outer diameter edge of the spring seat, and the two limiting claws limit the radial boundary of the flat scroll spring on the outer diameter of the spring seat;
the supporting claw is a spring seat supporting claw, and the spring seat supporting claw is a turned-up supporting structure which is arranged in parallel or perpendicular to the curved hook of the outer ring of the plane spiral spring; the periphery of the rotor is respectively provided with an assembly and a half assembly, wherein the rotor interference hole corresponds to the central holes of the assembly and the half assembly, and the spring seat is in interference fit with the rotor through the half assembly central hole; the inner surfaces of the two limiting claws on the outer diameter of the spring seat are the same as the surface shape of the plane scroll spring.
2. The flat spring fixing device for the camshaft intermediate lock VVT according to claim 1, characterized in that: the shape of the small boss at the bottom is the same as that of the directional hole.
3. The flat spring fixing device for the camshaft intermediate lock VVT according to claim 1, characterized in that: the outer surface of the cylindrical structure at the lower part of the spring seat is the bottom surface of the spring seat, and when the spring seat is in interference fit with the rotor, the bottom surface of the spring seat is in fit with the bottom surface of the inner hole of the rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711176649.9A CN107762586B (en) | 2017-11-22 | 2017-11-22 | Plane spring fixing device for cam shaft middle locking VVT |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711176649.9A CN107762586B (en) | 2017-11-22 | 2017-11-22 | Plane spring fixing device for cam shaft middle locking VVT |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107762586A CN107762586A (en) | 2018-03-06 |
| CN107762586B true CN107762586B (en) | 2024-04-12 |
Family
ID=61279165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711176649.9A Active CN107762586B (en) | 2017-11-22 | 2017-11-22 | Plane spring fixing device for cam shaft middle locking VVT |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107762586B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108465769A (en) * | 2018-05-22 | 2018-08-31 | 宁波太平洋电控系统有限公司 | Scroll spring assembly machine built in the VVT actuators of band signal wheel |
| CN108857382A (en) * | 2018-06-23 | 2018-11-23 | 广东利元亨智能装备有限公司 | A kind of VVT automatic assembly line |
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| CN102367749A (en) * | 2011-10-18 | 2012-03-07 | 奇瑞汽车股份有限公司 | Variable valve timing device |
| CN102705028A (en) * | 2012-05-24 | 2012-10-03 | 绵阳富临精工机械股份有限公司 | Reset spring fixing device for cam phaser |
| CN102725485A (en) * | 2010-01-25 | 2012-10-10 | 谢夫勒科技股份两合公司 | Camshaft adjuster |
| CN103375215A (en) * | 2012-04-20 | 2013-10-30 | 谢夫勒科技股份两合公司 | Spring suspension of a hydraulic camshaft adjuster |
| DE102013209053A1 (en) * | 2013-05-16 | 2014-11-20 | Schaeffler Technologies Gmbh & Co. Kg | Camshaft adjuster with a spring retainer and a return spring |
| DE102014206099A1 (en) * | 2014-04-01 | 2015-10-01 | Schaeffler Technologies AG & Co. KG | Phaser |
| CN105074143A (en) * | 2012-12-18 | 2015-11-18 | 舍弗勒技术股份两合公司 | camshaft adjustment system |
| CN105604626A (en) * | 2014-11-21 | 2016-05-25 | 江苏海龙电器有限公司 | Variable valve timing device with back cover for internal combustion machine |
| CN105673116A (en) * | 2014-11-21 | 2016-06-15 | 江苏海龙电器有限公司 | Hydraulic blade type valve timing adjuster for engine |
| CN106523064A (en) * | 2016-12-27 | 2017-03-22 | 江苏太平洋精锻科技股份有限公司 | Plane spiral spring fixing device for cam phaser |
| CN107313823A (en) * | 2016-04-27 | 2017-11-03 | 舍弗勒技术股份两合公司 | Camshaft adjusting device with axially curved torsion spring and spring cover |
| CN207513645U (en) * | 2017-11-22 | 2018-06-19 | 宁波太平洋电控系统有限公司 | Locking VVT plane spring fixing devices among camshaft |
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2017
- 2017-11-22 CN CN201711176649.9A patent/CN107762586B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102725485A (en) * | 2010-01-25 | 2012-10-10 | 谢夫勒科技股份两合公司 | Camshaft adjuster |
| CN102367749A (en) * | 2011-10-18 | 2012-03-07 | 奇瑞汽车股份有限公司 | Variable valve timing device |
| CN103375215A (en) * | 2012-04-20 | 2013-10-30 | 谢夫勒科技股份两合公司 | Spring suspension of a hydraulic camshaft adjuster |
| CN102705028A (en) * | 2012-05-24 | 2012-10-03 | 绵阳富临精工机械股份有限公司 | Reset spring fixing device for cam phaser |
| CN105074143A (en) * | 2012-12-18 | 2015-11-18 | 舍弗勒技术股份两合公司 | camshaft adjustment system |
| DE102013209053A1 (en) * | 2013-05-16 | 2014-11-20 | Schaeffler Technologies Gmbh & Co. Kg | Camshaft adjuster with a spring retainer and a return spring |
| DE102014206099A1 (en) * | 2014-04-01 | 2015-10-01 | Schaeffler Technologies AG & Co. KG | Phaser |
| CN105604626A (en) * | 2014-11-21 | 2016-05-25 | 江苏海龙电器有限公司 | Variable valve timing device with back cover for internal combustion machine |
| CN105673116A (en) * | 2014-11-21 | 2016-06-15 | 江苏海龙电器有限公司 | Hydraulic blade type valve timing adjuster for engine |
| CN107313823A (en) * | 2016-04-27 | 2017-11-03 | 舍弗勒技术股份两合公司 | Camshaft adjusting device with axially curved torsion spring and spring cover |
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| CN207513645U (en) * | 2017-11-22 | 2018-06-19 | 宁波太平洋电控系统有限公司 | Locking VVT plane spring fixing devices among camshaft |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107762586A (en) | 2018-03-06 |
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