CN208295057U - Start dynamo belt transmission device - Google Patents
Start dynamo belt transmission device Download PDFInfo
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- CN208295057U CN208295057U CN201820480265.XU CN201820480265U CN208295057U CN 208295057 U CN208295057 U CN 208295057U CN 201820480265 U CN201820480265 U CN 201820480265U CN 208295057 U CN208295057 U CN 208295057U
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- oil circuit
- driving belt
- stretcher
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Abstract
The utility model discloses a kind of starting dynamo belt transmission device, including starter/generator (1), the driving belt pulley (2) being located on starter/generator (1), the crank pulley (3) being located on crankshaft, the driving belt (4) being arranged around the driving belt pulley (2) and crank pulley (3), belt tensioning mechanism on driving belt (4) is set, the belt tensioning mechanism includes the first tensioning wheel (5) and the second tensioning wheel (6) being respectively provided on the outside of two sections of driving belts (2) between driving belt pulley (2) and crank pulley (3), stretcher (7), the stretcher (7) includes shell (7.1), for the first piston (7.2) of the first tensioning wheel (5) rotation connection, for the second piston (7.3) of the second tensioning wheel (6) rotation connection, it is located at Automatic adjustment oil circuit (7.4) in shell (7.1).The utility model provides a kind of starting dynamo belt transmission device that can be automatically adjusted to balance the tension of two sides driving belt and without externally supplying oil pressure.
Description
Technical field
The utility model relates to technical field of automobile engine, in particular to a kind of starting dynamo belt transmission device.
Background technique
The drive belt that currently active dynamo belt transmission device includes starter/generator, is located in starter/generator shaft
The crank pulley take turns, being located on crankshaft, the driving belt being arranged around driving belt pulley and crank pulley, in order to make to be driven
Belt tension is usually arranged stretcher in the other side of the side of driving belt setting idle pulley, driving belt, is arranged on stretcher
Tensioning wheel, when driving belt long-time service is stretched or when driving belt tension reduces, tensioner piston is in lubricating system oil
It is forward extended out under the action of pressure, heads on tensioning wheel and be tensioned driving belt, compensate the elongation of driving belt；When driving belt
When clamp force is excessive, tensioner piston, which inwardly retracts, reduces the tensile force of driving belt, so that driving belt be made to remain at one
In fixed tension range.But the driving belt that stretcher side is only adjusted when adjusting, in the tension of the driving belt of idle pulley side
It can not adjust, and idler side driving belt overtension will affect that the service life of driving belt, tension is too small so that driving belt is beaten
Transmission performance that is sliding and influencing driving belt
Summary of the invention
It can be automatically adjusted the technical problem to be solved by the utility model is to provide one kind to balance two sides driving belt
Tension and without externally supplying the starting dynamo belt transmission device of oil pressure.
The technical scheme in the invention for solving the above technical problem are as follows: a kind of starting dynamo belt transmission device,
Including starter/generator, the driving belt pulley being located on starter/generator, the crank pulley being located on crankshaft, surround the driving skin
Belt wheel and the driving belt of crank pulley setting, the belt tensioning mechanism that is arranged on driving belt, the belt tension machine
Structure includes the first tensioning wheel and second on the outside of two sections of driving belts being respectively provided between driving belt pulley and crank pulley
Tensioning wheel, stretcher, the stretcher include shell, for the first tensioning wheel rotation connection first piston, for the second tensioning wheel
The second piston of rotation connection is located at the intracorporal automatic adjustment oil circuit of shell, and the automatic adjustment oil circuit is for contracting first piston
The pressure returned in stretcher is converted into the thrust for making second piston stretch out stretcher or retracts second piston in stretcher
Pressure is converted into the thrust for making first piston stretch out stretcher.
Compared with the prior art, the advantages of the utility model are: the two sides of driving belt are respectively provided with tensioning wheel, and work as
The driving belt tensile force of first tensioning wheel side is excessive, influences the driving belt of the second tensioning wheel side simultaneously, leads to its tensile force
When too small, the first tensioning wheel pushes first piston to retract in stretcher, then by automatically adjusting oil circuit for second piston stretching
Tight device pushes the second tensioning wheel to be tensioned the driving belt of the second tensioning wheel side；When the driving belt of the first tensioning wheel side
Tensile force is too small, influences the driving belt of the second tensioning wheel side simultaneously, and when causing its tensile force excessive, the second tensioning wheel pushes the
Two pistons retract in stretcher, then first piston is stretched out stretcher by automatic adjustment oil circuit, and the first tensioning wheel of promotion is to the
The driving belt of one tensioning wheel side is tensioned, and generates linkage to the first tensioning wheel and the second tensioning wheel by stretcher, thus
Automatically adjust and balance the tensile force of the driving belt of two tensioning wheel sides.
As a kind of improvement of the utility model, the automatic adjustment oil circuit includes being located in the shell for first piston
Mobile the first oil pocket, for the second mobile oil pocket of second piston, the first oil pocket of connection and the second oil pocket two connection oil circuits,
The first check valve and second one-way valve being respectively provided on two connection oil circuits, the dynamic direction of the first check valve fuel feeding liquid stream
It is limited to uniaxially flow to the second oil pocket from the first oil pocket, the dynamic direction of the second one-way valve fuel feeding liquid stream is limited to be only capable of
The first oil pocket uniaxially is flowed to from the second oil pocket, by the improvement, in two connection oil circuits, the oil of the first check valve is set
Road limits oil liquid and is only capable of flowing to the second oil pocket from the first oil pocket, and the oil circuit that second one-way valve is arranged limits oil liquid and is only capable of from second
Oil pocket flows to the first oil pocket, therefore when the driving belt tensile force of the first tensioning wheel side becomes larger, it pushes first piston to retract and opens
Tight device, the first oil pocket inner fluid pressure become larger, and flow to the second oil pocket by the first check valve, the second oil pocket pushes second piston
Stretcher is stretched out, so that the driving belt tensile force of the second tensioning wheel side be made to become larger；When the driving belt of the second tensioning wheel side
When clamp force becomes larger, second piston is pushed to retract stretcher, the second oil pocket inner fluid pressure becomes larger, flows to by second one-way valve
First oil pocket, the first oil pocket pushes first piston to stretch out stretcher, so that the driving belt tensile force of the first tensioning wheel side be made to become
Greatly.
As a kind of also improvement of the utility model, passes through pressure stabilizing oil communication between two connection oil circuits, lead to
The improvement is crossed, the oil pressure balance of two connection oil circuits is made by pressure stabilizing oil circuit, is controlled by check valve and oil circuit, makes system
It can be adaptively adjusted, guarantee that system is in tensioning state.
As the utility model there are also a kind of improvement, the connection oil circuit of the automatic adjustment oil circuit passes through machine in engine
Oil pump carries out pressurization or pressure release to oil liquid, by the improvement, in the prior art, by in-engine lubricating oil pump to stretcher
Fuel feeding or draining are carried out, therefore fuel feeding can also be carried out using automatic adjustment oil circuit of the lubricating oil pump to the utility model, to improve certainly
The dynamic oil pressure adjusted in oil circuit, so that two pistons push two tensioning wheels to be tensioned driving belt two sides；Also or
Reduce the oil pressure in automatic adjustment oil circuit, reduces the tensile force of driving belt in stretcher so that two pistons retract.
As a kind of also improvement of the utility model, the automatic adjustment oil circuit further includes accumulation of energy branch, the accumulation of energy
Branch includes energy storage chamber, the energy storage piston being located in energy storage chamber, connection energy storage chamber and the accumulation of energy oil circuit, the control accumulation of energy that are connected to oil circuit
Oil circuit and the control valve for being connected to oil circuit on-off, by the improvement, accumulation of energy branch can be carried out the oil liquid of automatic adjustment oil circuit
Supplement opens control valve and carries out pressure release to automatic adjustment oil circuit when the tensile force of the driving belt of two sides is excessive, automatic to adjust
Oil liquid in fuel-economizing road enters energy storage chamber, so that two pistons be made to retract in a certain amount to stretcher, reduces by two tensionings
Take turns the thrust to driving belt；When the tensile force of the driving belt of two sides is too small, control valve is opened to automatic adjustment oil circuit
It is pressurized, the oil liquid in energy storage chamber, which enters in automatic adjustment oil circuit, to be pressurized, so that two pistons be made to stretch from stretcher
Certain displacement out pushes two tensioning wheels to be tensioned driving belt.
As the utility model there are also a kind of improvement, the accumulation of energy oil circuit includes the first branch and second branch, described
Control valve includes the 4th check valve for setting third check valve on the first leg, being located in second branch, and the third is unidirectional
Valve is only capable of flowing to connection oil circuit from energy storage chamber for limiting oil liquid, and the 4th check valve is only capable of for limiting oil liquid from connection
Oil circuit flows to energy storage chamber, and by the improvement, set third check valve goes out oil pressure, thus at the fuel-displaced place of third check valve
The too small i.e. connection oil circuit of pressure at pressure it is too small, when driving belt tensile force is inadequate, oil liquid is made to flow to company from energy storage chamber
Logical oil circuit, sets the input pressure of the 4th check valve, thus at the excessive i.e. connection oil circuit of the pressure at the 4th check valve oil inlet
Pressure it is excessive, when driving belt tensile force is excessive, so that oil liquid is flowed to energy storage chamber by the 4th check valve from connection oil circuit and store up
It deposits.
As the utility model there are also a kind of improvement, the first piston passes through the first spring and the first oil pocket elasticity phase
It supports, the second piston is offseted by second spring and the second oil pocket elasticity, by the improvement, the first spring and second spring
For the resilient support of mechanical structure formula, for assisting oil liquid to flexibly support two pistons.
As the utility model there are also a kind of improvement, the energy storage piston passes through energy-storaging spring and energy storage chamber elasticity phase
It supports, by the improvement, energy-storaging spring can convert oil liquid pressure to the elastic potential energy storage of spring.
Detailed description of the invention
Fig. 1 is the utility model overall structure stereoscopic schematic diagram.
Fig. 2 is structural upright schematic diagram at the utility model stretcher.
Fig. 3 is oil liquid flow direction schematic diagram when driving belt tensile force is excessive at the first tensioning wheel of the utility model.
Fig. 4 is oil liquid flow direction schematic diagram when driving belt tensile force is excessive at the second tensioning wheel of the utility model.
Fig. 5 is oil liquid flow direction schematic diagram when the utility model accumulation of energy branch pressurizes to connection oil circuit oil pressure.
Fig. 6 is the utility model accumulation of energy branch to oil liquid flow direction schematic diagram when being connected to the pressure release of oil circuit oil pressure.
1- starter/generator, 2- driving belt pulley, 3- crank pulley, 4- driving belt, the first tensioning wheel of 5-, 6- second open
Bearing up pulley, 7- stretcher, 7.1- shell, 7.2- first piston, 7.3- second piston, 7.4- automatically adjust oil circuit, 7.4.1- first
Oil pocket, the second oil pocket of 7.4.2-, 7.4.3- are connected to oil circuit, the first check valve of 7.4.4-, 7.4.5- second one-way valve, 7.4.6-
Pressure stabilizing oil circuit, 7.4.7- energy storage chamber, 7.4.8- energy storage piston, the 7.4.9- first branch, 7.4.10- second branch, 7.4.11-
Three check valves, the 4th check valve of 7.4.12-, 7.4.13- energy-storaging spring, the first spring of 7.5-, 7.6- second spring.
Specific embodiment
The embodiments of the present invention are further described with reference to the accompanying drawing.
As shown in Figs. 1-2,
A kind of starting dynamo belt transmission device, including starter/generator 1, the driving belt pulley being located on starter/generator 1
2, it is located at crank pulley 3 on crankshaft, the driving belt 4 being arranged around driving belt pulley 2 and crank pulley 3, setting exist
Belt tensioning mechanism on driving belt 4, belt tensioning mechanism include be respectively provided at driving belt pulley 2 and crank pulley 3 it
Between the outside of two sections of driving belts 4 the first tensioning wheel 5 and the second tensioning wheel 6, stretcher 7, stretcher 7 includes shell 7.1, supplies
First tensioning wheel 5 rotation connection first piston 7.2, for the second tensioning wheel 6 rotation connection second piston 7.3, be located at shell
Automatic adjustment oil circuit 7.4 in 7.1, the pressure that automatic adjustment oil circuit 7.4 is used to retract first piston 7.2 in stretcher 7 turn
The pressure for turning to the thrust for making second piston 7.3 stretch out stretcher 7 or retracting second piston 7.3 in stretcher 7 converts
To make first piston 7.2 stretch out the thrust of stretcher 7, wherein piston refers to that tensioning wheel setting exists for tensioning wheel rotation connection
It tensioning wheel and is rotated on piston on piston, when piston axially generates displacement along it, tensioning wheel ruddy complexion is axially generated along piston
Displacement, and tensioning wheel and driving belt 4 offset in order to reduce friction, tensioning wheel can be with the transmission of driving belt 4 and by band
Move rotation.
Wherein, two pistons can be opposite in diagram and be coaxially arranged, can also opposite and setting in a certain angle.
Wherein, automatic adjustment oil circuit 7.4 includes being located in shell 7.1 for the first oil pocket of the movement of first piston 7.2
7.4.1, for the second mobile oil pocket 7.4.2 of second piston 7.3, connect two of the first oil pocket 7.4.1 and the second oil pocket 7.4.2
Connection oil circuit 7.4.3, the first check valve 7.4.4 and second one-way valve 7.4.5 being respectively provided on two connection oil circuit 7.4.3,
The dynamic direction of first check valve 7.4.4 fuel feeding liquid stream is limited to uniaxially flow to the second oil pocket from the first oil pocket 7.4.1
7.4.2, the dynamic direction of second one-way valve 7.4.5 fuel feeding liquid stream is limited to be only capable of uniaxially to flow to the from the second oil pocket 7.4.2
One oil pocket 7.4.1.
Wherein, it is connected between two connection oil circuit 7.4.3 by pressure stabilizing oil circuit 7.4.6.
Wherein, automatic adjustment oil circuit 7.4 further includes accumulation of energy branch, and accumulation of energy branch includes energy storage chamber 7.4.7, is located at energy storage chamber
7.4.7 in energy storage piston 7.4.8, connection energy storage chamber 7.4.7 be connected to oil circuit 7.4.3 accumulation of energy oil circuit, control accumulation of energy oil circuit
With the control valve for being connected to oil circuit 7.4.3 on-off.
Wherein, accumulation of energy oil circuit includes first branch 7.4.9 and second branch 7.4.10, and control valve includes being located at the first branch
7.4.9 third check valve 7.4.11 on, the 4th check valve 7.4.12 being located on second branch 7.4.10, third check valve
7.4.11 it is only capable of flowing to connection oil circuit 7.4.3, the 4th check valve 7.4.12 from energy storage chamber 7.4.7 for limiting for limiting oil liquid
Stand oil liquid is only capable of flowing to energy storage chamber 7.4.7 from connection oil circuit 7.4.3.
Wherein, first piston 7.2 is offseted by the first spring 7.5 and the first oil pocket 7.4.1 elasticity, and second piston 7.3 is logical
Second spring 7.6 is crossed to offset with the second oil pocket 7.4.2 elasticity.
Wherein, energy storage piston 7.4.8 is offseted by energy-storaging spring 7.4.13 and energy storage chamber 7.4.7 elasticity.
Wherein, the arrow in Fig. 3 is oil liquid stream when 4 tensile force of driving belt is excessive at the first tensioning wheel of the utility model 5
Direction is moved, when 4 tensile force of driving belt at the first tensioning wheel 5 is excessive, first piston 7.2 is pushed to retract the shell of stretcher 7
In 7.1, the oil liquid in the first oil pocket 7.4.1 enters connection oil circuit 7.4.3 by the first check valve 7.4.4, then flows to again
Second oil pocket 7.4.2 pushes second piston 7.3 to release.
Wherein, the arrow in Fig. 4 is oil liquid stream when 4 tensile force of driving belt is excessive at the second tensioning wheel of the utility model 6
Dynamic direction when 4 tensile force of chain at the second tensioning wheel 6 is excessive, pushes second piston 7.3 to contract as shown in arrow direction in figure
It returns in the shell 7.1 of stretcher 7, the oil liquid in the second oil pocket 7.4.2 enters connection oil circuit by second one-way valve 7.4.5
7.4.3, the first oil pocket 7.4.1 is then flowed to again, and first piston 7.2 is pushed to release.
Wherein, in the prior art, the check valve being arranged in oil circuit all has certain unlatching threshold values, driving belt transmission
Shi Zhendong generates the thrust to piston, and the variation of the thrust is no more than the unlatching threshold values of check valve, and check valve is not turned on, thus
Driving belt vibration bring tension variation can be filtered, and the first check valve 7.4.4 and second in the utility model is unidirectional
Valve 7.4.5 can also set certain threshold values, to filter the tensile force variation that driving belt vibration generates.
Wherein, the arrow in Fig. 5 is that oil liquid flows when the utility model accumulation of energy branch pressurizes to connection oil circuit 7.4.3 oil pressure
Direction, when oil pressure is too small in connection oil circuit 7.4.3, oil liquid passes through third from energy storage chamber 7.4.7 when 4 tensile force of driving belt is inadequate
Check valve 7.4.11 flows to connection oil circuit 7.4.3, can set third check valve 7.4.11 and open threshold values, when connection oil circuit
7.4.3 oil pressure be less than third check valve 7.4.11 setting unlatching threshold values when, third check valve 7.4.11 open, oil liquid from
Energy storage chamber 7.4.7 flows to connection oil circuit 7.4.3 by third check valve 7.4.11.
Wherein, the oil liquid when arrow in Fig. 6 show the utility model accumulation of energy branch to connection oil circuit 7.4.3 oil pressure pressure release
Flow direction, when oil pressure is excessive in connection oil circuit 7.4.3, oil liquid is logical from connection oil circuit 7.4.3 when 4 tensile force of driving belt is excessive
It crosses the 4th check valve 7.4.12 and enters energy storage chamber 7.4.7, energy-storaging spring 7.4.13 accumulation of energy can set the 4th isolator 7.4.12
Open threshold values, when be connected to oil pressure in oil circuit 7.4.3 be greater than open threshold values when, the 4th isolator 7.4.12 is opened, and oil liquid is from connection
Oil circuit 7.4.3 enters energy storage chamber 7.4.7 by the 4th check valve 7.4.12.
Wherein, starting generator refers to that P0 starts generator, in addition, there are also Timing Belt wheel transmission devices etc. in engine
Belt gear, the structure that this starting dynamo belt transmission device also can be used are extended application.
Only the most preferred embodiment of the utility model is described above, but is not to be construed as the limit to claim
System.The utility model is not only limited to above embodiments, and specific structure is allowed to vary.It is all in the utility model independent right
It is required that protection scope in made various change in scope of protection of the utility model.
Claims (8)
1. a kind of starting dynamo belt transmission device, including starter/generator (1), the drive belt being located on starter/generator (1)
Wheel (2), the crank pulley (3) being located on crankshaft, the biography being arranged around the driving belt pulley (2) and crank pulley (3)
Dynamic belt (4), the belt tensioning mechanism being arranged on driving belt (4), it is characterised in that: the belt tensioning mechanism includes point
The first tensioning wheel (5) for not being located on the outside of two sections of driving belts (4) between driving belt pulley (2) and crank pulley (3) and
Second tensioning wheel (6), stretcher (7), the stretcher (7) include shell (7.1), are rotatablely connected for the first tensioning wheel (5)
First piston (7.2), the second piston (7.3) for the second tensioning wheel (6) rotation connection, the automatic tune that is located in shell (7.1)
Fuel-economizing road (7.4), the pressure that automatic adjustment oil circuit (7.4) is used to retract first piston (7.2) in stretcher (7) convert
To make second piston (7.3) to stretch out the thrust of stretcher (7) or second piston (7.3) being retracted the pressure in stretcher (7)
It is converted into the thrust for making first piston (7.2) to stretch out stretcher (7).
2. starting dynamo belt transmission device according to claim 1, it is characterised in that: the automatic adjustment oil circuit
It (7.4) include being located in the shell (7.1) for first piston (7.2) mobile first oil pocket (7.4.1), for second piston
(7.3) two of mobile the second oil pocket (7.4.2), connection the first oil pocket (7.4.1) and the second oil pocket (7.4.2) are connected to oil circuit
(7.4.3), the first check valve (7.4.4) being respectively provided on two connections oil circuit (7.4.3) and second one-way valve (7.4.5),
The dynamic direction of first check valve (7.4.4) the fuel feeding liquid stream is limited to uniaxially flow to second from the first oil pocket (7.4.1)
Oil pocket (7.4.2), the dynamic direction of second one-way valve (7.4.5) the fuel feeding liquid stream are limited to be only capable of uniaxially from the second oil pocket
(7.4.2) flows to the first oil pocket (7.4.1).
3. starting dynamo belt transmission device according to claim 2, it is characterised in that: two connection oil circuits
It is connected between (7.4.3) by pressure stabilizing oil circuit (7.4.6).
4. starting dynamo belt transmission device according to claim 3, it is characterised in that: the automatic adjustment oil circuit
(7.4) connection oil circuit (7.4.3) is pumped by engine inner engine oil and carries out pressurization or pressure release to oil liquid.
5. starting dynamo belt transmission device according to claim 3, it is characterised in that: the automatic adjustment oil circuit
It (7.4) further include accumulation of energy branch, the accumulation of energy branch includes energy storage chamber (7.4.7), the accumulation of energy being located in energy storage chamber (7.4.7) work
Plug (7.4.8), controls accumulation of energy oil circuit and is connected to oil circuit the accumulation of energy oil circuit for connecting energy storage chamber (7.4.7) and being connected to oil circuit (7.4.3)
The control valve of (7.4.3) on-off.
6. starting dynamo belt transmission device according to claim 5, it is characterised in that: the accumulation of energy oil circuit includes the
One branch (7.4.9) and second branch (7.4.10), the control valve are unidirectional including the third being located on the first branch (7.4.9)
Valve (7.4.11), the 4th check valve (7.4.12) being located on second branch (7.4.10), the third check valve (7.4.11)
It is only capable of flowing to connection oil circuit (7.4.3) from energy storage chamber (7.4.7) for limiting oil liquid, the 4th check valve (7.4.12) is used
It is only capable of flowing to energy storage chamber (7.4.7) from connection oil circuit (7.4.3) in limiting oil liquid.
7. starting dynamo belt transmission device according to claim 2, it is characterised in that: the first piston (7.2)
It is offseted by the first spring (7.5) and the first oil pocket (7.4.1) elasticity, the second piston (7.3) passes through second spring (7.6)
It offsets with the second oil pocket (7.4.2) elasticity.
8. starting dynamo belt transmission device according to claim 5, it is characterised in that: the energy storage piston
(7.4.8) is offseted by energy-storaging spring (7.4.13) and energy storage chamber (7.4.7) elasticity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820480265.XU CN208295057U (en) | 2018-04-03 | 2018-04-03 | Start dynamo belt transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820480265.XU CN208295057U (en) | 2018-04-03 | 2018-04-03 | Start dynamo belt transmission device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208295057U true CN208295057U (en) | 2018-12-28 |
Family
ID=64725089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820480265.XU Active CN208295057U (en) | 2018-04-03 | 2018-04-03 | Start dynamo belt transmission device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208295057U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412988A (en) * | 2018-04-03 | 2018-08-17 | 博格华纳汽车零部件(宁波)有限公司 | Start dynamo belt transmission device |
-
2018
- 2018-04-03 CN CN201820480265.XU patent/CN208295057U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412988A (en) * | 2018-04-03 | 2018-08-17 | 博格华纳汽车零部件(宁波)有限公司 | Start dynamo belt transmission device |
| CN108412988B (en) * | 2018-04-03 | 2024-03-05 | 博格华纳汽车零部件(宁波)有限公司 | Belt transmission device for starting generator |
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