CN105736656A - Machinery tension device used for chain transmission system of internal combustion engine, and moving rail of machinery tension device - Google Patents
Machinery tension device used for chain transmission system of internal combustion engine, and moving rail of machinery tension device Download PDFInfo
- Publication number
- CN105736656A CN105736656A CN201410764344.XA CN201410764344A CN105736656A CN 105736656 A CN105736656 A CN 105736656A CN 201410764344 A CN201410764344 A CN 201410764344A CN 105736656 A CN105736656 A CN 105736656A
- Authority
- CN
- China
- Prior art keywords
- leaf spring
- dynamic rail
- hook portion
- sidewall
- combustion engine
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/18—Means for guiding or supporting belts, ropes, or chains
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
- F16H2007/0863—Finally actuated members, e.g. constructional details thereof
- F16H2007/0872—Sliding members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
- F16H2007/0889—Path of movement of the finally actuated member
- F16H2007/0893—Circular path
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/18—Means for guiding or supporting belts, ropes, or chains
- F16H2007/185—Means for guiding or supporting belts, ropes, or chains the guiding surface in contact with the belt, rope or chain having particular shapes, structures or materials
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
The invention provides a machinery tension device used for a chain transmission system of an internal combustion engine and a moving rail of the machinery tension device. The machinery tension device comprises a pivot bar fixed on the internal combustion engine, the moving rail defined with a basal part and a side wall, and a pin positioned on the internal combustion engine. The basal part of the moving rail is placed in the way of being pushed to lean against a chain to drive the chain to move forward, and the moving rail is connected with the pivot bar in a pivotal manner, so that the moving rail can rotate around the pivot bar. The machinery tension device further comprises a leaf spring. One end of the leaf spring contacts with the pin and abuts against the pin, and the other end of the leaf spring is jointed with a hook part arranged on the moving rail, so that the leaf spring is locked on the moving rail. By the way that the leaf spring is pre-tensioned to exert pressure on the moving rail, the chain is kept tensioning sufficiently through the basal part. According to the machinery tension device and the moving rail provided by the invention, the hook part is arranged on the basal part and spaced from the side wall, so that the leaf spring can be locked on the moving rail in a simple way and at a lower cost to prevent the leaf spring from leaving the moving rail.
Description
Technical field
The present invention relates to mechanical tensioner, more particularly relate to the mechanical tensioner of the chain transmission system of internal combustion engine.The invention still further relates to the dynamic rail of mechanical tensioner.
Background technology
In order to ensure to be in tensioning state constantly for the chain in the chain legacy system of internal combustion engine, it is provided with mechanical tensioner.Fig. 1 shows conventional mechanical tensioner of the prior art, wherein have employed leaf spring 2 '.Described mechanical tensioner includes leaf spring 2 ', is fixed on the pivoting lever of internal combustion engine, moves rail 1 ' and the pin being positioned in internal combustion engine, and dynamic rail 1 ' is provided with hook portion 4 '.Dynamic rail 1 ' leans chain and places, in order to guide the traveling of chain.Dynamic rail 1 ' also includes boss, is provided with through hole for pivot rods traverse in boss, and thus dynamic rail 1 ' is pivotably attached in pivoting lever, in order to can rotate around pivoting lever.The end thereof contacts pin of leaf spring 2 ' is also resisted against on pin, and the other end engages with the hook portion 4 ' of dynamic rail 1 ', thus being locked on dynamic rail 1 ' by leaf spring 2 '.Leaf spring 2 ' is arranged to be pressed against dynamic rail 1 ', to apply pressure to dynamic rail 1 ', so that chain tension.
In above-mentioned mechanical tensioner, dynamic rail 1 ' defines sidewall 3 ' and base portion 5 ', and hook portion 4 ' is arranged on sidewall 3 ', as the projection form of sidewall 3 '.In make-up machinery tensioner process, as it is shown in figure 1, when making leaf spring 2 ' be locked on dynamic rail 1 ', it is necessary to leaf spring 2 ' is pressed downwardly onto the lower head of hook portion 4 ', so that leaf spring 2 ' engages with hook portion 4 ', is thus locked by hook portion 4 '.Owing to hook portion 4 ' is arranged on sidewall 3 ', its direction small distance being only capable of along being perpendicular to sidewall 3 ' moves, therefore when leaf spring 2 ' is pressed downward the head contact with hook portion 4 ', it is necessary to apply bigger pressure and leaf spring 2 ' could be pressed onto the lower head of hook portion 4 ', thus engaging with hook portion 4 '.
Summary of the invention
Therefore, it is an object of the invention to provide the mechanical tensioner of a kind of improvement and dynamic rail, for the chain transmission system of internal combustion engine, leaf spring is locked on dynamic rail by a straightforward manner with relatively low cost, makes leaf spring will not leave dynamic rail.
According to first aspect, the present invention provides the dynamic rail of the mechanical tensioner of a kind of chain transmission system for internal combustion engine, described dynamic rail limits base portion and sidewall, described base portion is used for leaning chain and places to make chain tension, in the hook portion that is provided above with of described base portion, described hook portion and described sidewall spacers are opened.
According to embodiments of the invention, described dynamic rail limits pair of parallel sidewall.
According to embodiments of the invention, described hook portion includes head and the junction surface being connected with described base portion, described head is tilt back to the side of described sidewall, described mechanical tensioner includes the leaf spring of elongation, described junction surface is for engaging with described leaf spring, to be locked on described dynamic rail by described leaf spring.
According to embodiments of the invention, described sidewall is by partly otch, and described hook portion is located at least partially within described otch.
According to embodiments of the invention, described hook portion in the face of the side of described sidewall and described sidewall back to the side of described hook portion on the direction being perpendicular to described sidewall separated by a distance.
According to embodiments of the invention, between described hook portion and described otch, there is gap.
According to embodiments of the invention, described mechanical tensioner includes the leaf spring of elongation, the pivoting lever being fixed on internal combustion engine and the pin being positioned on internal combustion engine, described dynamic rail also includes boss, described boss is provided with through hole pass for described pivoting lever, make described dynamic rail pivotably attached in described pivoting lever, one end of described leaf spring is resisted against on described pin, and the other end is locked on described dynamic rail by described hook portion.
In second aspect, the present invention provides the mechanical tensioner of a kind of chain transmission system for internal combustion engine, leaf spring including elongation, it is fixed on the pivoting lever of internal combustion engine, the dynamic rail limiting base portion and sidewall and the pin being positioned on internal combustion engine, the base portion of described dynamic rail leans chain and places, in order to guide the traveling of chain, and described dynamic rail is pivotably attached in pivoting lever, can rotate around pivoting lever, described dynamic rail is provided with hook portion, one end of described leaf spring is resisted against on described pin, the other end engages with described hook portion, and described leaf spring is arranged to be pressed against described dynamic rail, to apply pressure to described dynamic rail, described hook portion is arranged in above described base portion, open with described sidewall spacers.
According to embodiments of the invention, described hook portion includes head and the junction surface being connected with described base portion, described head is tilt back to the side of described sidewall, described junction surface is for engaging with described leaf spring, to be locked in by described leaf spring on described dynamic rail, the part through-thickness that described leaf spring engages with described junction surface is chamfered at least partially.Preferably, the angle of inclination of the chamfered portion of described leaf spring is more than the angle of inclination 5-15 degree of the inclined side of described head.In this manner it is possible to leaf spring is assemblied in frictional force produced by the process on dynamic rail by reduction.
According to embodiments of the invention, the part that described leaf spring engages with described junction surface is reduced on width relative to remainder.
Preferably, the part through-thickness that described leaf spring engages with described junction surface includes non-chamfered portion and chamfered portion, described non-chamfered portion on width more than described chamfered portion.In this manner it is possible to leaf spring is assemblied in frictional force produced by the process on dynamic rail by reduction.
It addition, be equally applicable to the mechanical tensioner according to the present invention above with reference to the feature according to the dynamic rail of the present invention.
Accompanying drawing explanation
Be will be apparent from by the detailed description with reference to the accompanying drawings embodiment of the present invention carried out, inventive feature and advantage thereof.In the drawings:
Fig. 1 is the schematic views of the mechanical tensioner adopting leaf spring of prior art.
Fig. 2 is the schematic views of the mechanical tensioner of the dynamic rail pair of parallel sidewall of restriction of the embodiment of the present invention.
Fig. 3 is the partially schematic view of the dynamic rail of the embodiment of the present invention.
Fig. 4-5 is the enlarged detail perspective view of the dynamic rail of the embodiment of the present invention.
Fig. 6-7 is the schematic diagram of the leaf spring of the embodiment of the present invention.
Fig. 8-11 is the joint schematic diagram of the dynamic rail of the embodiment of the present invention and leaf spring.
Figure 12-13 is the detailed schematic of the dynamic rail of the embodiment of the present invention and leaf spring respectively.
Figure 14 is the mechanical tensioner of embodiment of the present invention schematic diagram when being assemblied on chain.
Figure 15 is the joint schematic diagram of the dynamic rail of another embodiment of the present invention and leaf spring.
Reference numerals list
1 ' dynamic rail
2 ' leaf springs
3 ' sidewalls
4 ' hook portions
5 ' base portions
1 dynamic rail
2 leaf springs
3 sidewalls
4 hook portions
5 base portions
6 boss
Above 7
8 gaps
9 otch
10 non-chamfered portion
11 chamfered portion
100 chains
200 sprocket wheels
300 pivoting levers
400 pins
Detailed description of the invention
Embodiments of the invention are described in detail referring to Fig. 2-15.
As shown in figure 14, the chain transmission system of internal combustion engine includes chain 100 and sprocket wheel 200.Mechanical tensioner according to the present invention includes the pin 400 being fixed on the pivoting lever 300 of internal combustion engine, dynamic rail 1 and being positioned on internal combustion engine, dynamic rail 1 leans chain 100 and places, in order to guide the traveling of chain 100, and it has boss 6 (see Fig. 2-3), boss is provided with through hole, for pivoting lever 300 traverse, so that dynamic rail 1 is pivotably attached in pivoting lever 300, in order to can rotate around pivoting lever 300.Described mechanical tensioner also includes the leaf spring 2 of elongation, its one end contacts and is resisted against on pin 400 with pin 400, dynamic rail 1 is provided with hook portion 4 (referring to Fig. 2-3), the other end of leaf spring 2 engages with hook portion 4, thus leaf spring 2 being locked on dynamic rail 1, wherein leaf spring 2 is pre-tensioned, and suitably to apply pressure to dynamic rail 1, thus makes chain 100 keep enough tensionings.
By regulating the pre-tensioner of leaf spring 2, suitably apply pressure to dynamic rail 1.By means of the pressure of pre-tensioned leaf spring 2, dynamic rail 1 can rotate around the pivoting lever 300 being fixed in internal combustion engine.In this way, along with chain is advanced, no matter chain is loose or tight, and guarantee chain 100 is all in tensioning state by the mechanical tensioner of the present invention.
Above description is well known by persons skilled in the art.The feature of the embodiment of the present invention is described referring to Fig. 2-13.
As Figure 2-3, dynamic rail 1 limits base portion 5 and sidewall 3, and described base portion 5 leans chain 100 and places to make chain 100 tensioning, and on base portion 5,7 are provided with hook portion 4, and described hook portion 4 is spaced apart with sidewall 3.In fig. 2, dynamic rail 1 limits pair of parallel sidewall.
As in Figure 3-5, a part of incision of sidewall 3, a part for hook portion 4 is positioned in otch, and there is gap 8 between hook portion 4 and otch.It addition, as shown in figure 12, hook portion 4, in the face of that side of sidewall 3 and sidewall 3 are back to that side standoff distance L on the direction being perpendicular to sidewall 3 of hook portion 4, does not namely line up with that side of sidewall 3.
As illustrated in figures 4-5, hook portion 4 includes head and the junction surface being connected with base portion 5, and junction surface is for engaging (referring to Fig. 8-11) with leaf spring 2, and head is tilt back to that side of sidewall 3.As shown in figure 12, the angle of inclination of the inclined side of head is α.
As shown in fig. 6-7, that part that leaf spring 2 engages with the junction surface of dynamic rail 1 includes non-chamfered portion 10 and chamfered portion 11 along the thickness direction of leaf spring 2, non-chamfered portion 11 on width more than chamfered portion 10.Additionally, that part that leaf spring 2 engages with the junction surface of dynamic rail 1 is reduced on width relative to the remainder of leaf spring 2, form otch 9.As shown in figure 13, the inclination angle beta of the chamfered portion 11 of leaf spring 2 is more than tilt angle alpha, and both differences are 5-15 degree.
Fig. 8-11 illustrates the dynamic rail 1 of the embodiment of the present invention and the joint situation of leaf spring 2.During assembling, leaf spring 2 is pressed downwardly onto the lower head of hook portion 4, so that leaf spring 2 engages with the junction surface of hook portion 4, is thus locked by hook portion 4.
Leaf spring 2 is being pressed downward against period, as shown in figs. 10-11, the head contact of the notch of leaf spring 2 and hook portion 4, owing to hook portion 4 is not retrained by the sidewall 3 moving rail 1, so hook portion 4 has more flexibility on the direction being perpendicular to sidewall 3, therefore the head promoting hook portion 4 is displaced outwardly by leaf spring 2, thus reduces and is pressed downward against leaf spring 2 engaging required pressure with junction surface.Additionally, due to the angle of inclination of the chamfered portion 10 of leaf spring 2 is more than the angle of inclination of the head of hook portion 4, so reducing frictional force produced by leaf spring 2 and the head contact of hook portion 4, thus it is easy to be assemblied on dynamic rail 1 leaf spring 2.The non-chamfered portion 10 of leaf spring 2 further reduce with the head contact of hook portion 4 produced by frictional force, otherwise, as shown in figure 15, the sharp edges of chamfered portion by contact hook portion 4 head, result in bigger frictional force.
It will be understood by those skilled in the art that above description is illustrative of.When without departing substantially from the thought of the present invention and scope, the present invention still can be made numerous modifications and variations by those skilled in the art.Such as, although in the above-described embodiments, leaf spring 2 includes non-chamfered portion 10, but as shown in figure 15, leaf spring 2 can not include non-chamfered portion, and only includes chamfered portion 11.
Claims (14)
1. the dynamic rail for the mechanical tensioner of the chain transmission system of internal combustion engine, described dynamic rail limits base portion and sidewall, and described base portion is used for leaning chain and places to make chain tension, it is characterised in that, in the hook portion that is provided above with of described base portion, described hook portion and described sidewall spacers are opened.
2. dynamic rail as claimed in claim 1, it is characterised in that described dynamic rail limits pair of parallel sidewall.
3. the dynamic rail as according to any one of claim 1-2, it is characterized in that, described hook portion includes head and the junction surface being connected with described base portion, described head is tilt back to the side of described sidewall, described mechanical tensioner includes the leaf spring of elongation, described junction surface is for engaging with described leaf spring, to be locked on described dynamic rail by described leaf spring.
4. the dynamic rail as according to any one of claim 1-2, it is characterised in that described sidewall is by partly otch, and described hook portion is located at least partially within described otch.
5. rail as claimed in claim 4 dynamic, it is characterised in that described hook portion in the face of the side of described sidewall and described sidewall back to the side of described hook portion on the direction being perpendicular to described sidewall separated by a distance.
6. dynamic rail as claimed in claim 4, it is characterised in that there is gap between described hook portion and described otch.
7. the dynamic rail as according to any one of claim 1-2, it is characterized in that, described mechanical tensioner includes the leaf spring of elongation, the pivoting lever being fixed on internal combustion engine and the pin being positioned on internal combustion engine, described dynamic rail also includes boss, described boss is provided with through hole pass for described pivoting lever, making described dynamic rail pivotably attached in described pivoting lever, one end of described leaf spring is resisted against on described pin, and the other end is locked on described dynamic rail by described hook portion.
8. the mechanical tensioner for the chain transmission system of internal combustion engine, leaf spring including elongation, it is fixed on the pivoting lever of internal combustion engine, the dynamic rail limiting base portion and sidewall and the pin being positioned on internal combustion engine, the base portion of described dynamic rail leans chain and places, in order to guide the traveling of chain, and described dynamic rail is pivotably attached in pivoting lever, can rotate around pivoting lever, described dynamic rail is provided with hook portion, one end of described leaf spring is resisted against on described pin, the other end engages with described hook portion, and described leaf spring is arranged to be pressed against described dynamic rail, to apply pressure to described dynamic rail, it is characterized in that, described hook portion is arranged in above described base portion, open with described sidewall spacers.
9. mechanical tensioner as claimed in claim 8, it is characterized in that, described hook portion includes head and the junction surface being connected with described base portion, described head is tilt back to the side of described sidewall, described junction surface is for engaging with described leaf spring, to be locked in by described leaf spring on described dynamic rail, the part through-thickness that described leaf spring engages with described junction surface is chamfered at least partially.
10. mechanical tensioner as claimed in claim 9, it is characterised in that the angle of inclination of the chamfered portion of described leaf spring is more than the angle of inclination 5-15 degree of the inclined side of described head.
11. the mechanical tensioner as according to any one of claim 9-10, it is characterised in that the part that described leaf spring engages with described junction surface is reduced on width relative to remainder.
12. the mechanical tensioner as according to any one of claim 9-10, it is characterised in that the part through-thickness that described leaf spring engages with described junction surface includes non-chamfered portion and chamfered portion, described non-chamfered portion on width more than described chamfered portion.
13. the mechanical tensioner as according to any one of claim 8-10, it is characterised in that described sidewall is by partly otch, and described hook portion is located at least partially within described otch.
14. the mechanical tensioner as according to any one of claim 8-10, it is characterised in that described dynamic rail also includes boss, described boss is provided with through hole and passes for described pivoting lever.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410764344.XA CN105736656A (en) | 2014-12-11 | 2014-12-11 | Machinery tension device used for chain transmission system of internal combustion engine, and moving rail of machinery tension device |
| DE102015223560.2A DE102015223560A1 (en) | 2014-12-11 | 2015-11-27 | Mechanical tensioner and movable rail for the chain drive system of an internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410764344.XA CN105736656A (en) | 2014-12-11 | 2014-12-11 | Machinery tension device used for chain transmission system of internal combustion engine, and moving rail of machinery tension device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105736656A true CN105736656A (en) | 2016-07-06 |
Family
ID=56082571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410764344.XA Pending CN105736656A (en) | 2014-12-11 | 2014-12-11 | Machinery tension device used for chain transmission system of internal combustion engine, and moving rail of machinery tension device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105736656A (en) |
| DE (1) | DE102015223560A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002070965A (en) * | 2000-08-31 | 2002-03-08 | Suzuki Motor Corp | Chain guide |
| WO2012097887A1 (en) * | 2011-01-20 | 2012-07-26 | Schaeffler Technologies AG & Co. KG | Tensioning device |
| US20130059630A1 (en) * | 2011-03-15 | 2013-03-07 | Panasonic Corporation | Mobile terminal |
| CN103148183A (en) * | 2011-12-07 | 2013-06-12 | 谢夫勒科技股份两合公司 | A plate spring tensioner for a continuous traction mechanism |
| DE102013200162A1 (en) * | 2012-01-17 | 2013-07-18 | Schaeffler Technologies AG & Co. KG | Mechanical clamping apparatus for chain drive of combustion engine, has spring whose one end is held at tensioning rail and wire spring pre-tensioned, in order to exert pressing force at rail such that string is held with sufficing voltage |
-
2014
- 2014-12-11 CN CN201410764344.XA patent/CN105736656A/en active Pending
-
2015
- 2015-11-27 DE DE102015223560.2A patent/DE102015223560A1/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002070965A (en) * | 2000-08-31 | 2002-03-08 | Suzuki Motor Corp | Chain guide |
| WO2012097887A1 (en) * | 2011-01-20 | 2012-07-26 | Schaeffler Technologies AG & Co. KG | Tensioning device |
| US20130059630A1 (en) * | 2011-03-15 | 2013-03-07 | Panasonic Corporation | Mobile terminal |
| CN103148183A (en) * | 2011-12-07 | 2013-06-12 | 谢夫勒科技股份两合公司 | A plate spring tensioner for a continuous traction mechanism |
| DE102013200162A1 (en) * | 2012-01-17 | 2013-07-18 | Schaeffler Technologies AG & Co. KG | Mechanical clamping apparatus for chain drive of combustion engine, has spring whose one end is held at tensioning rail and wire spring pre-tensioned, in order to exert pressing force at rail such that string is held with sufficing voltage |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102015223560A1 (en) | 2016-06-16 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160706 |
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| RJ01 | Rejection of invention patent application after publication |