CN103925035A - Swing arm adjusting frame - Google Patents
Swing arm adjusting frame Download PDFInfo
- Publication number
- CN103925035A CN103925035A CN201310016070.1A CN201310016070A CN103925035A CN 103925035 A CN103925035 A CN 103925035A CN 201310016070 A CN201310016070 A CN 201310016070A CN 103925035 A CN103925035 A CN 103925035A
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- CN
- China
- Prior art keywords
- swing arm
- gear
- rotatingshaft
- regualting frame
- adjustment
- 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
An embodiment of the invention provides a swing arm adjusting frame, and relates to an engine component which is used for adjusting the position of a driving center of a swing arm to realize different valve lifts. The swing arm adjusting frame comprises a swing arm adjusting frame body which is an adjusting gear, a driving portion is arranged on the swing arm adjusting frame body, and the adjusting gear drives the driving portion to rotate around a gear shaft when rotating around the gear shaft, so that the swing arm is driven to rotate around the adjusting center of the swing arm. The swing arm adjusting frame is used for adjusting the position of the driving center of the swing arm.
Description
Technical field
The present invention relates to engine components, relate in particular to a kind of swing arm regualting frame.
Background technique
Valve is a vitals in motor, for inputting fuel and discharge the waste gas after burning in motor.In engine art, valve lift refers to valve and opens moved height completely from being just opened to, the namely Lift of valve.The cam profile difference of the camshaft using in motor, the valve lift obtaining is also different.The valve lift of conventional engines is changeless, the cam profile that is its camshaft only has one, its lift design is that the balance under full operating mode is selected to motor, therefore this lift can not make motor all obtain good response in high velocity and low velocity zone, result is that motor both can not get best high speed efficiency, also can not get best low speed torque, just obtained under full operating mode the comparatively performance of balance.
Lift range variable technology (VVL, variable valve lift) can change its valve lift according to the different operating modes of motor, make motor can obtain good response in high velocity and low velocity zone, thereby improve high-speed power and the low speed torque of motor.Existing lift range variable technology is controlled effect according to it can be divided into section variable valve lift and continuously variable valve lift.Compared with section variable valve lift, continuously variable valve lift can coordinate the combustion system of motor better, has certain superiority.
Existing a kind of variable valve lift driving device is that the position by adjusting center near it in the actuated by cams swing arm of camshaft makes swing arm swing around the driving center of swing arm, and the working surface of swing arm drives the to-and-fro motion of valve connecting rod to realize the open and close of valve.Just need to provide a kind of regulating mechanism to adjust the position at driving center if realize so variable valve lift.
Summary of the invention
Embodiments of the invention provide a kind of swing arm regualting frame, and the position at the driving center that is used for adjusting swing arm is to realize different valve lifts.
For achieving the above object, embodiments of the invention adopt following technological scheme:
Swing arm regualting frame provided by the invention comprises swing arm regualting frame body, described swing arm regualting frame body, for adjusting gear and which is provided with drive portion, is adjusted gear and is driven drive portion to rotate to drive the adjustment center rotating of swing arm around swing arm around gear shaft in the time that the gear shaft of self rotates.
Particularly, described drive portion is be located at the through hole on described adjustment gear and be located at the rotatingshaft in through hole, and described rotatingshaft is used for connecting adjustment gear and swing arm.
Further, the driving center of described rotatingshaft and swing arm coaxially arranges.
In order to make the smooth return of swing arm, described rotatingshaft is provided with return spring, and one end of return spring is connected with adjustment gear, the other end is used for being connected with swing arm.
In order to limit the axial transmission of return spring, on described rotatingshaft and at the two ends of return spring, be provided with annular boss.
In order to ensure the axial movement value of swing arm and swing arm regualting frame, on described rotatingshaft, be provided with annular snap catching groove for the end being connected with swing arm.
Preferably, the adjustment center of described gear shaft and swing arm coaxially arranges.
Further, described adjustment gear is helical gear, for being connected with a joggle by gear with driving source.
In order to reduce the weight of swing arm regualting frame, on the face parallel with rotatingshaft on described helical gear, be provided with duplicate removal structure, the face vertical with rotatingshaft is provided with drain pan.
In order to reduce the quantity of component, the two ends of described rotatingshaft all extend to outside described through hole and for connecting swing arm.
The swing arm regualting frame that the embodiment of the present invention provides comprises swing arm regualting frame body, swing arm regualting frame body, for adjusting gear and which is provided with drive portion, is adjusted gear and is driven drive portion to rotate to drive the adjustment center rotating of swing arm around swing arm around gear shaft in the time that the gear shaft of self rotates.Swing arm is adjusted center rotating around it like this, the driving center of swing arm also along with the rotation of swing arm around adjusting center rotating, realized the adjustment that drives central position, also just realized different valve lifts.
Brief description of the drawings
In order to be illustrated more clearly in the technological scheme of the embodiment of the present invention, below the accompanying drawing of required use during embodiment is described is briefly described.
The structural representation of the swing arm regualting frame that Fig. 1 provides for the embodiment of the present invention;
Fig. 2 is the schematic diagram of the diverse location of swing arm regualting frame shown in Fig. 1;
Another structural representation of the swing arm regualting frame that Fig. 3 provides for the embodiment of the present invention;
Fig. 4 is the means of fixation schematic diagram of gear shaft shown in Fig. 1;
The swing arm regualting frame that Fig. 5 provides for the embodiment of the present invention and swing arm and bearing support be related to schematic diagram.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technological scheme in the embodiment of the present invention is clearly described.
The swing arm regualting frame that the embodiment of the present invention provides comprises swing arm regualting frame body, swing arm regualting frame body, for adjusting gear and which is provided with drive portion, is adjusted gear and is driven drive portion to rotate to drive the adjustment center rotating of swing arm around swing arm around gear shaft in the time that the gear shaft of self rotates.Swing arm is adjusted center rotating around it like this, the driving center of swing arm also along with the rotation of swing arm around the adjustment center rotating of swing arm, realized the adjustment of the driving central position of swing arm, also just realized different valve lifts.
Describe the preferred embodiment of swing arm regualting frame provided by the invention in detail below in conjunction with accompanying drawing.
The structural representation of the swing arm regualting frame that Fig. 1 provides for the embodiment of the present invention 1.As shown in Figure 1, this swing arm regualting frame comprises swing arm regualting frame body 1, and swing arm regualting frame body 1 is for adjusting gear and which is provided with drive portion 12.Drive portion 12 in the present embodiment, for being located at the through hole 121 of adjusting on gear and being located at the rotatingshaft 122 in through hole 121, is connected and is adjusted gear and swing arm by rotatingshaft 122.Wherein the way of realization of drive portion is not limited to through hole and is located at the rotatingshaft in through hole, also can be and the form of adjusting the integrated rotatingshaft of gear, under this way of realization, adjust gear and do not rotate around this integrated rotatingshaft, play rotation but follow one.
Fig. 2 is the schematic diagram of the diverse location of swing arm regualting frame shown in Fig. 1.As shown in Figure 2, the swing arm regualting frame of depicted as solid lines is phase diagram corresponding to primary importance, and the swing arm regualting frame of dotted lines is phase diagram corresponding to the second place after rotating.Under the swing arm regualting frame laying state of depicted as solid lines, the driving center of swing arm is in a position, and swing arm under the actuated by cams of camshaft around this driving center rotating, the working surface of swing arm acts on valve connecting rod makes it do straight reciprocating motion with certain height, thereby drives valve to open with certain lift or closure; In the time need to realizing different valve lifts, make to adjust gear and turn to the position shown in dotted line around gear shaft 11, now the position of rotatingshaft 122 has also forwarded the position shown in dotted line to thereupon, because rotatingshaft 122 is for being connected with swing arm, therefore also corresponding adjustment of the position of swing arm, be the also corresponding adjustment of driving center of swing arm, thereby obtained another valve lift.It should be noted that in this adjustment process, the adjustment central position of swing arm is constant, and driving center is around adjusting center rotating; After adjustment completes, then make swing arm around driving the heart to swing.The movement locus at driving center is single circular arc like this, controls to get up will facilitate manyly.Fig. 2 has only illustrated to adjust two different positions of gear, should be clear and definite, and adjust gear and can rest on any position to adapt to the different operating mode demands of motor, can realize the valve lift of continuous variable.
From the adjustment process at the driving center of above-described swing arm, gear shaft can be called to the rotation section of swing arm regualting frame, the present invention adopts and adjusts the body of gear as swing arm regualting frame, can well rotation section and drive portion be all integrated on adjustment gear, than rotation section and drive portion are arranged to two structures on component, simplify the structure, reduced the usage quantity of component.
As the further improvement of above-described embodiment, described adjustment gear is helical gear, for being connected with a joggle by gear with driving source.Helical gear has advantages of that compared with spur gear bearing capacity is large, stable drive, and therefore in transmission process, impact, noise and vibration greatly reduce, long service life.
Wherein, the means of fixation of gear shaft can be for as shown in Figure 4, fixing by the bearing support 3 of a specified structure, is specially on the fixed component that bearing support 3 is mounted on motor, and such as engine cylinder covers, gear shaft 11 is located in the through hole 31 of bearing support 3.
Preferably, as shown in Figure 5, the driving center 42 of rotatingshaft 122 and swing arm 4 coaxially arranges.Rotatingshaft 122 directly drives the driving center 42 of swing arm 4 to turn over certain angle with respect to the adjustment center 41 of swing arm 4 like this, and this angle is identical with the angle that rotatingshaft 122 turns over respect to gear shaft 11, therefore can control easily the angular displacement of line between driving center 42 and adjustment center 41.Simplify the structure and control procedure.
Because the driving center 42 of rotatingshaft 122 and swing arm 4 coaxially arranges, swing arm 4 is just rotated and is realized opening and closing of valve around rotatingshaft 122 simultaneously.After crossing swing arm for the ease of the maximum end of the cam on camshaft, make the smooth return of swing arm, as shown in Figure 3, the present invention arranges return spring 223 on rotatingshaft 122, and one end of return spring 223 is connected with swing arm regualting frame body 1, the other end is for being connected with swing arm.Return spring 223 drives swing arm return like this.The specific implementation form of return spring can be torsion spring, and insert in the groove of swing arm one end of torsion spring, and the other end inserts in the mounting hole of adjusting gear.The large end of camshaft overhead cam drives swing arm to rotate in one direction, and after swing arm is crossed in the maximum end rotation of cam, the small end of cam contacts with swing arm, and now torsion spring drives swing arm around the center of driving counter-rotation, realizes the return of swing arm.Groove is more easily fixed in swing arm return spring, quick and easy for installation, has improved the working stability of swing arm.
In order to prevent that return spring 223 from axial transmission occurring, the present embodiment is provided with annular boss 221 on rotatingshaft 122 and at the two ends of return spring 223, to ensure the stability of work.
Secondly, on rotatingshaft 122, be provided with annular snap catching groove 222 for the end being connected with swing arm, in annular snap catching groove 222, buckle be installed.To ensure the axial movement value of rocking arm and swing arm regualting frame, make stable contact of cam of rocking arm and camshaft.
In order to reduce the weight of swing arm regualting frame body, as shown in Figure 3 and Figure 4, the present embodiment is provided with arc duplicate removal structure 13 on helical gear 1 face parallel with rotatingshaft 122, and the face vertical with rotatingshaft 122 is provided with drain pan 14.The static weight structure that goes down can alleviate quality in the situation that of proof strength on the one hand, and drain pan can prevent its trapped fuel in the course of the work, gains in weight, and affects the stability of system works.
In addition, as shown in Figure 5, the adjustment center 41 of gear shaft 11 and swing arm 4 coaxially arranges.In the time that adjustment gear 1 rotates around the gear shaft 11 of himself, when rotatingshaft 122 applies driving force to swing arm 4, this driving force is also rotated swing arm 4 around this gear shaft 11, rotate around adjustment center 41 thereby realize swing arm 4 like this.So only make line between driving center 42 and adjustment center 41 turn over certain angle, therefore can control easily the angular displacement of this line.
Typically, each cylinder of motor has two intake valves, if intake valve of a swing arm driving, a cylinder just needs two swing arms so, as shown in Figure 5, in the present invention, the two ends of rotatingshaft 122 all extend to outside through hole 121 and for connecting swing arm 4, therefore just can realize and adopt an adjustment gear to realize the adjustment at the driving center of two swing arms.The usage quantity that this has saved engine component, simplifies the structure.Certainly, also can adopt in other embodiments of the invention an adjustment gear mesh to answer a swing arm mounting design.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, any be familiar with those skilled in the art the present invention disclose technical scope in; the variation that can expect easily or replacement, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (10)
1. a swing arm regualting frame, it is characterized in that, comprise swing arm regualting frame body, described swing arm regualting frame body, for adjusting gear and which is provided with drive portion, is adjusted gear and is driven drive portion to rotate to drive the adjustment center rotating of swing arm around swing arm around gear shaft in the time that the gear shaft of self rotates.
2. swing arm regualting frame according to claim 1, is characterized in that, described drive portion is be located at the through hole on described adjustment gear and be located at the rotatingshaft in through hole, and described rotatingshaft is used for connecting adjustment gear and swing arm.
3. swing arm regualting frame according to claim 2, is characterized in that, the driving center of described rotatingshaft and swing arm coaxially arranges.
4. swing arm regualting frame according to claim 3, is characterized in that, described rotatingshaft is provided with return spring, and one end of return spring is connected with adjustment gear, the other end is used for being connected with swing arm.
5. swing arm regualting frame according to claim 4, is characterized in that, on described rotatingshaft and at the two ends of return spring, is provided with annular boss.
6. swing arm regualting frame according to claim 5, is characterized in that, on described rotatingshaft, is provided with annular snap catching groove for the end being connected with swing arm.
7. according to the swing arm regualting frame described in any one in claim 1-6, it is characterized in that, the adjustment center of described gear shaft and swing arm coaxially arranges.
8. according to the swing arm regualting frame described in any one in claim 1-6, it is characterized in that, described adjustment gear is helical gear, for being connected with a joggle by gear with driving source.
9. swing arm regualting frame according to claim 8, is characterized in that, on the face parallel with rotatingshaft on described helical gear, is provided with duplicate removal structure, and the face vertical with rotatingshaft is provided with drain pan.
10. according to the swing arm regualting frame described in any one in claim 2-6, it is characterized in that, the two ends of described rotatingshaft all extend to outside described through hole and for connecting swing arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310016070.1A CN103925035B (en) | 2013-01-15 | 2013-01-15 | A kind of swing arm regulates frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310016070.1A CN103925035B (en) | 2013-01-15 | 2013-01-15 | A kind of swing arm regulates frame |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103925035A true CN103925035A (en) | 2014-07-16 |
| CN103925035B CN103925035B (en) | 2016-06-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310016070.1A Active CN103925035B (en) | 2013-01-15 | 2013-01-15 | A kind of swing arm regulates frame |
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| CN (1) | CN103925035B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19509604A1 (en) * | 1995-03-16 | 1996-09-19 | Bayerische Motoren Werke Ag | Valve train of an internal combustion engine |
| US6591798B2 (en) * | 2001-12-17 | 2003-07-15 | Delphi Technologies, Inc. | Variable valve actuation assembly for an internal combustion engine |
| JP2005291014A (en) * | 2004-03-31 | 2005-10-20 | Mazda Motor Corp | Variable valve gear for engine |
| CN101550853A (en) * | 2009-05-08 | 2009-10-07 | 上海汽车集团股份有限公司 | Engine air valve continuously variable driving mechanism |
-
2013
- 2013-01-15 CN CN201310016070.1A patent/CN103925035B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19509604A1 (en) * | 1995-03-16 | 1996-09-19 | Bayerische Motoren Werke Ag | Valve train of an internal combustion engine |
| US6591798B2 (en) * | 2001-12-17 | 2003-07-15 | Delphi Technologies, Inc. | Variable valve actuation assembly for an internal combustion engine |
| JP2005291014A (en) * | 2004-03-31 | 2005-10-20 | Mazda Motor Corp | Variable valve gear for engine |
| CN101550853A (en) * | 2009-05-08 | 2009-10-07 | 上海汽车集团股份有限公司 | Engine air valve continuously variable driving mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103925035B (en) | 2016-06-08 |
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