CN207420718U - A kind of motor-driven variable length link - Google Patents
A kind of motor-driven variable length link Download PDFInfo
- Publication number
- CN207420718U CN207420718U CN201721446228.9U CN201721446228U CN207420718U CN 207420718 U CN207420718 U CN 207420718U CN 201721446228 U CN201721446228 U CN 201721446228U CN 207420718 U CN207420718 U CN 207420718U
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- CN
- China
- Prior art keywords
- rod body
- motor
- gonnecting rod
- variable length
- driven variable
- 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
The utility model discloses a kind of motor-driven variable length link, to overcome the problems, such as manufacture existing in the prior art of high cost, poor reliability, complicated.The utility model is made of gonnecting rod body top and the bottom, helical gear, motor, motor shaft fixed seat, spur gear；Driving motor pedestal is installed in the T-slot of gonnecting rod body the latter half, its position is fixed by shop bolt, limits its moving back and forth in slot；The first half of gonnecting rod body and lower half are all drilled with threaded hole respectively, and are connected by helical gear, and two parts are machined with pin hole, fix its relative position by straight pin, prevent two parts from relatively rotating；Gear is installed on electric machine main shaft, it is connected with each other by gib head taper stock key, attaching nut fixes its position, the gear and helical gear engage simultaneously, by the rotation of motor, driving helical gear rotates, and makes gonnecting rod body top and the bottom that relative motion occur, and then change length of connecting rod, change the compression ratio of engine.
Description
Technical field
More precisely a kind of component connecting rod of the utility model on internal combustion engine, is a kind of motor-driven variable length
Spend connecting rod.
Background technology
The variable compression ratio of engine compression ratio, which can be changed, to be had very much, and variable length link mechanism is exactly wherein one
A example.When the length of connecting rod, combustion chamber volume of piston when in compression top center becomes smaller, because compression ratio is
The ratio between displacement and combustion chamber volume, therefore the compression ratio of engine increases；When length of connecting rod becomes in short-term, piston is in pressure
Combustion chamber volume during contracting top dead centre becomes larger, therefore the compression ratio of engine becomes smaller.
The compression ratio of general engine is constant, because combustion chamber volume and displacement are all fixed ginsengs
Number, has set, Modern Engine makes engine in the operating mode of various change to meet emission regulation in the design
Better efficiency is played, improves the performance of engine, changeable compression ratio technique is particularly important.For gasoline engine, compression ratio
It is too high to cause gasoline engine mixture pressure is excessively high in cylinder in high load capacity, pinking is generated, this can cause engine serious
It destroys；For diesel engine, the excessively high service life that engine can be caused to generate violent vibration, influence engine of compression ratio；It is right
For the engine for adding turbocharger, pinking in order to prevent, compression ratio will be less than naturally aspirated engine, compression
Than fixation, in low pressure, compression ratio is relatively low, and engine combustion is insufficient, and the thermal efficiency and fuel economy is caused to decline.
These characteristics determine that the compression ratio of general engine allows for the compromise of each influence factor, therefore cannot play completely
Go out the potential of engine, in order to solve these problems, changeable compression ratio technique is taken to be very important.Using compression ratio can be used
Technology can make engine that can keep suitable compression ratio in each operating mode, greatly improve the reliability and property of engine
Energy.
It can using changeable compression ratio technique：
1. improving the thermal efficiency of engine, fuel consumption rate is reduced.
2. reduce the probability of pinking and high vibration generation.
3. it reduces engine starting and the noxious emission in warming-up process.
4. make engine that there is better fuel oil adaptability.
The content of the invention
The utility model is solves manufacture existing in the prior art of high cost, poor reliability, complicated, installation is poor
Technical problem provides a kind of motor-driven variable length link.
In order to solve the above technical problems, the utility model adopts the following technical scheme that realization：
Motor-driven variable length link includes：The gonnecting rod body first half, helical gear, straight pin, gonnecting rod body lower half,
Shop bolt, motor, bearing, motor shaft fixed seat, gib head taper stock key, spur gear, nut.
A kind of motor-driven variable length link, which is characterized in that driving motor is a kind of direct current generator, pedestal quilt
In the T-slot of gonnecting rod body lower half one side, and pass through shop bolt and fix its position, limit its moving back in slot
It is dynamic；The first half of gonnecting rod body and lower half are all drilled with threaded hole respectively, and are connected by helical gear, are fixed by straight pin
Gonnecting rod body top and the bottom relative position, prevents two parts from relatively rotating；Spur gear on electric machine main shaft is installed, passes through gib head
Key is connected with each other, while the gear and helical gear engage.
The gonnecting rod body first half and gonnecting rod body lower half is two parts for forming gonnecting rod body, and gonnecting rod body is divided into
Lower two parts.
The gonnecting rod body first half and the cross-sectional shape of gonnecting rod body lower half shaft part are cross.
The helical gear is a kind of stepped cylindrical structure, and intermediate part is spur gear, and upper and lower sides part is rotation
To opposite screw thread.
The gonnecting rod body first half and gonnecting rod body lower half relative position is machined with pin hole used for positioning.
The straight pin and the pin hole of gonnecting rod body lower half are interference fit, and the pin hole with the gonnecting rod body first half is gap
Cooperation.
The gib head taper stock key is a kind of connecting key with positioning function, it realizes fixed straight-tooth with nut collective effect
The position of wheel.
The beneficial effects of the utility model are compared with prior art：
1. a kind of motor-driven variable length link described in the utility model by the use of motor as driving power source, energy
Enough accuracies for ensureing control.
2. a kind of motor-driven variable length link described in the utility model, is only processed connecting rod, and adds
Driving device is filled, installation is good, at low cost.
3. a kind of motor-driven variable length link described in the utility model, only reequips connecting rod, addition
Part is few, simple in structure.
Description of the drawings
The utility model will be further described below with reference to the accompanying drawings：
Fig. 1 is a kind of front view of motor-driven variable length link described in the utility model；
Fig. 2 is a kind of motor-driven variable length link Section A-A sectional view described in the utility model；
Fig. 3 is a kind of sectional view of motor-driven variable length link left view described in the utility model；
In figure：1st, the gonnecting rod body first half, 2, helical gear, 3, straight pin, 4, gonnecting rod body lower half, 5, shop bolt, 6,
Motor, 7, bearing, 8, motor shaft fixed seat, 9, gib head taper stock key, 10, spur gear, 11, nut.
Specific embodiment
The utility model is explained in detail below in conjunction with the accompanying drawings：
Such as Fig. 1, shown in Fig. 3, gonnecting rod body is divided into 4 two parts of the gonnecting rod body first half 1 and gonnecting rod body lower half, and gonnecting rod body
Top and the bottom center is threaded hole respectively, is connected by helical gear 2, and is machined with pin hole in relative position,
Their relative position is fixed using straight pin 3；Motor 6 is a kind of direct current generator, and 4 one side of gonnecting rod body lower half is machined with peace
The slot of motor 6 is filled, 6 floor installation of motor passes through shop bolt 5 and fix its position in slot；It is equipped on 6 main shaft of motor straight
Gear 10 is connected by gib head taper stock key 9, and fixes its position with reference to nut 11, meanwhile, spur gear 10 and helical gear 2 engage.
As shown in Figure 1, gonnecting rod body is divided into two parts, the part for connecting them up and down from centre is referred to as helical gear
2, it is a kind of stepped cylindrical structure, and intermediate part is spur gear, and upper and lower sides part is oppositely oriented screw thread.
As shown in Fig. 2, the cross sectional shape of 4 shaft of the gonnecting rod body first half 1 and gonnecting rod body lower half is cross.
As shown in figure 3, the slot of installation motor 6 is T-slot, and pin hole is machined in corresponding position, for installing positioning
Pin 5 fixes motor 6；Gonnecting rod body lower half 4 is provided with motor shaft fixed seat 8 simultaneously, and electric machine main shaft is fixed using bearing 7,
Ensure that motor stabilizing works.
As shown in Figure 1, Figure 3, when engine needs small reduction ratio, ECU is emitted to 6 signal of motor, and motor 6 starts
Rotate forward, by spur gear 10 drive helical gear 2 rotate because helical gear up and down thread rotary orientation on the contrary, with
The pivot link body first half 1 of engine and gonnecting rod body lower half 4 are close to each other, and length of connecting rod shortens so that on piston only
The combustion chamber volume of engine becomes larger during point, so that engine compression ratio reduces.
As shown in Figure 1, Figure 3, when engine needs high compression ratio, similarly, 6 backwards rotation of driving motor passes through
Spur gear 10 drives helical gear to rotate backward, and the gonnecting rod body first half 1 and gonnecting rod body lower half 4 are located remotely from each other, connecting rod body length
Elongated, engine combustion chamber volume becomes smaller during piston top dead center so that compression ratio raises.
As shown in Figure 1, Figure 3, after the compression ratio of engine changes to desired compression ratio, motor is stopped, connecting rod
Length remains unchanged, and the compression ratio of engine is kept constant at this time.
Claims (7)
1. a kind of motor-driven variable length link, which is characterized in that the motor-driven variable length link includes
The gonnecting rod body first half (1), helical gear (2), straight pin (3), gonnecting rod body lower half (4) shop bolt (5), motor (6), bearing
(7), motor shaft fixed seat (8), gib head taper stock key (9), spur gear (10), nut (11)；
The pedestal of motor (6) is fixed in the T-slot of gonnecting rod body lower half (4), and passes through shop bolt (5) positioning；Thread
Wheel (2) is connected to the gonnecting rod body first half (1) and gonnecting rod body lower half (4), and passes through straight pin (3) to fix the gonnecting rod body first half
(1) and the relative position of gonnecting rod body lower half (4)；Spur gear (10) is installed on motor (6) main shaft, is mutually interconnected by gib head taper stock key
It connects, while the gear and helical gear (2) engage.
2. a kind of motor-driven variable length link described in accordance with the claim 1, is characterized in that, the gonnecting rod body upper half
Portion (1) and gonnecting rod body lower half (4) are two parts for forming gonnecting rod body, and gonnecting rod body is divided into two parts up and down.
3. a kind of motor-driven variable length link described in accordance with the claim 1, is characterized in that, the gonnecting rod body upper half
The cross-sectional shape of portion (1) and gonnecting rod body lower half (4) shaft part is cross.
A kind of 4. motor-driven variable length link described in accordance with the claim 1, which is characterized in that the helical gear
(2) it is a kind of stepped cylindrical structure, intermediate part is spur gear, and upper and lower sides part is oppositely oriented screw thread.
5. a kind of motor-driven variable length link described in accordance with the claim 1, which is characterized in that on the gonnecting rod body
Half portion (1) and gonnecting rod body lower half (4) relative position are machined with pin hole used for positioning.
A kind of 6. motor-driven variable length link described in accordance with the claim 1, which is characterized in that the straight pin
(3) and the pin hole of gonnecting rod body lower half (4) is interference fit, and the pin hole with the gonnecting rod body first half (1) is clearance fit.
A kind of 7. motor-driven variable length link described in accordance with the claim 1, which is characterized in that the gib head taper stock key
(9) it is a kind of connecting key with positioning function, it realizes the position of fixed spur gear (10) with nut (11) collective effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721446228.9U CN207420718U (en) | 2017-11-02 | 2017-11-02 | A kind of motor-driven variable length link |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721446228.9U CN207420718U (en) | 2017-11-02 | 2017-11-02 | A kind of motor-driven variable length link |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207420718U true CN207420718U (en) | 2018-05-29 |
Family
ID=62306701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721446228.9U Expired - Fee Related CN207420718U (en) | 2017-11-02 | 2017-11-02 | A kind of motor-driven variable length link |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207420718U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575303A (en) * | 2017-11-02 | 2018-01-12 | 吉林大学 | A kind of motor-driven variable length link |
-
2017
- 2017-11-02 CN CN201721446228.9U patent/CN207420718U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575303A (en) * | 2017-11-02 | 2018-01-12 | 吉林大学 | A kind of motor-driven variable length link |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180529 Termination date: 20201102 |
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| CF01 | Termination of patent right due to non-payment of annual fee |