KR20150004107A - transfer for 4 wheel drive vehicle - Google Patents
transfer for 4 wheel drive vehicle Download PDFInfo
- Publication number
- KR20150004107A KR20150004107A KR1020130077149A KR20130077149A KR20150004107A KR 20150004107 A KR20150004107 A KR 20150004107A KR 1020130077149 A KR1020130077149 A KR 1020130077149A KR 20130077149 A KR20130077149 A KR 20130077149A KR 20150004107 A KR20150004107 A KR 20150004107A
- Authority
- KR
- South Korea
- Prior art keywords
- oil pump
- oil
- output shaft
- case
- bearing
- Prior art date
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/34—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles
-
- 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
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
- F16H57/0436—Pumps
-
- 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
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
- F16H57/0441—Arrangements of pumps
-
- 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
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H2057/02013—Extension units for gearboxes, e.g. additional units attached to a main gear
-
- 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
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H2057/02095—Measures for reducing number of parts or components
-
- 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
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
- F16H2057/0235—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly specially adapted to allow easy accessibility and repair
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Arrangement And Driving Of Transmission Devices (AREA)
Abstract
The present invention relates to an auxiliary transmission of a four-wheel drive vehicle, in which an oil pump is integrally formed on an inner surface of a boss portion of a rear case, a bearing for supporting a rear end of a rear output shaft is provided on an outer surface of the boss portion, The number of parts and the number of assemblies of the pump can be reduced, and the bearing can be replaced without detaching the rear case.
Description
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an auxiliary transmission of a four-wheel drive vehicle, and more particularly to a sub-transmission of a four-wheel drive vehicle that switches between a two-wheel drive state and a four-wheel drive state.
The driving method of the vehicle is largely a two-wheel drive system and a four-wheel drive system. The two-wheel drive system drives only the front wheels or the rear wheels, and the four-wheel drive system drives both the front wheels and the rear wheels.
The four-wheel drive system is a full-time four-wheel drive system that is always driven by four-wheel drive, and part-time four-wheel drive system that can travel to two- .
Part-time four-wheel drive vehicles are equipped with a secondary transmission to switch between 2-wheel drive and 4-wheel drive.
Korean Patent Laid-Open Publication No. 10-2012-0079567 discloses a vehicle equipped with an auxiliary transmission. 1, the
The output of the
2 shows a configuration of a rear-side output end of the
The
The
Therefore, when the
However, the conventional
The number of components of the
Further, the fixed state of the
Since the
SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to reduce the number of parts of the oil pump, simplify assembly, and securely fix the oil pump, The present invention provides an auxiliary transmission of a four-wheel drive vehicle that is mounted on the outer side and can be easily replaced.
According to an aspect of the present invention, there is provided a transmission case including a rear case coupled to a front case mounted at a rear end of a transmission, a rear output shaft provided in a state of passing through a shaft hole formed at a rear end of the rear case, And an oil pump integrally provided on an inner surface of the boss portion formed in the boss portion.
The oil pump includes an oil pump rear case formed on an inner surface of the boss portion, an oil pump front case mounted on the oil pump rear case portion, and an oil pump front case disposed between the oil pump rear case and the oil pump front case An inner rotor and an outer rotor installed therein.
The inner rotor and the outer rotor are housed in a rotor mounting portion formed in the oil pump rear case, and oil inlet grooves and oil drain grooves are formed on the side surfaces of the rotor mounting portion.
And the inner rotor is eccentrically disposed in an inner space of the outer rotor.
And an oil pipe for supplying oil to the inside of the oil pump is connected to the oil inlet groove.
And the oil discharge groove is connected to the oil passage formed in the rear output shaft so as to supply oil to the main oil passage formed in the rear output shaft.
A seal ring is formed in the oil pump front case and a seal ring is provided in the seal ring to seal between the oil pump front case and the rear output shaft.
A bearing seating portion is formed on the outer surface of the boss portion of the rear case and a bearing for rotatably supporting the rear output shaft is provided on the bearing seating portion so that the bearing can be replaced without disassembling the rear case .
According to the present invention as described above, the number of parts of the oil pump is reduced by replacing one case of the oil pump with a rear case of the auxiliary transmission.
Therefore, the parts management is facilitated and the number of assembling operations is reduced.
Particularly, since the oil pump is assembled to the rear case and the rear case is directly attached to the front case of the auxiliary transmission, there is an effect that the assembly is simplified.
In addition, when the oil pump is integrated with the rear case, the vibration of the oil pump is greatly reduced upon rotation of the rear output shaft. Therefore, since the vibration of the oil pump does not cause the vibration of the rear output shaft, the output of the transmission is smoothly transmitted to the subsequent portion, the noise caused by the vibration is reduced, and the durability life of the oil pump is increased.
Further, since the bearing is mounted on the outer side of the rear case, the bearing can be replaced without disassembling the rear case. Therefore, it is possible to solve the problem of disassembling and reassembling the rear case to replace the bearing.
1 is a schematic view of a four-wheel drive vehicle equipped with an auxiliary transmission;
Fig. 2 is a rear end sectional view of the auxiliary transmission according to the prior art; Fig.
3 is a sectional view of the rear output shaft mounting portion of the auxiliary transmission according to the present invention.
4 is a perspective view showing the inner side of the rear derailleur according to the present invention.
5 is a perspective view of the front case of the auxiliary transmission oil pump according to the present invention.
6 is an assembled state diagram of an inner rotor and an outer rotor of the auxiliary transmission oil pump according to the present invention.
While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing.
The terms first, second, A, B, etc. may be used to describe various elements, but the elements should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.
It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.
The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.
Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.
Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.
3 is a sectional view of the rear output shaft mounting portion of the auxiliary transmission according to the present invention.
The auxiliary transmission includes a front case (90) mounted on an output side portion of the transmission case, and a rear case (100) mounted on the front case (90).
A
The front end portion of the
An input shaft integrally formed with the sun gear of the planetary gear set 80 is projected forward of the
A rear end portion of the
As the bearing supporting the front / rear end of the
A
The
The
The
4, the oil pump rear case-
3, 4 and 6, one end of the
An
A plurality of protrusions are formed on the outer circumferential surface of the
5, the oil
It goes without saying that the
A sealing
6, the
The
The assembly of the
First, an
The oil
Thereafter, the
At this time, since the center of the
When the
On the other hand, the
That is, the
The
After the
A
In FIG. 4,
Now, the operation of the present invention will be described.
3, the
The
A
The two-wheel / four-
Accordingly, when the drive mode is switched from the two-wheel drive state to the four-wheel drive state by the driver, the
Also, when the four-wheel low-speed or four-wheel high-speed mode is selected by the driver, the element engagement state of the planetary gear set 80 is switched and the output through the planetary gear set 80 is decelerated or accelerated, The rotation speed is decelerated or accelerated so that the vehicle can be driven in a four-wheel low-speed or four-wheel high-speed state.
Since the
When the
The oil introduced through the
The oil discharged from the
Thus, the
As described above, the auxiliary transmission according to the present invention has an oil pump that smoothly supplies oil for cooling and lubrication. In addition, the number of components constituting the oil pump is reduced, which is advantageous from the viewpoint of component management, and the number of assembling operations is reduced.
That is, the oil pump rear case is replaced by the oil pump rear case-shaped
The
Accordingly, the vibration generated in the
Accordingly, the influence of the vibration generated in the
In addition, the durability of the
On the other hand, a
Accordingly, when the
The components such as the
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is understandable. Accordingly, the true scope of the present invention should be determined by the following claims.
100: rear case 110: oil pump rear case configuration part
111: case joint surface 112: rotor mounting portion
113: Oil inlet groove 114: Oil outlet groove
115: Shaft hole 200: Rear output shaft
300: Bearing 400: Flange
500: Oil pump 510: Oil pump front case
520: Inner rotor 530: Outer rotor
Claims (8)
A rear output shaft provided in a state of passing through a shaft hole formed at a rear end of the rear case;
An oil pump integrally provided on an inner surface of a boss portion formed around the shaft hole;
And an auxiliary transmission for a four-wheel drive vehicle.
The oil pump includes an oil pump rear case formed on an inner surface of the boss portion, an oil pump front case mounted on the oil pump rear case portion, and an oil pump front case disposed between the oil pump rear case and the oil pump front case And an outer rotor and an outer rotor installed in the vehicle.
Wherein the inner rotor and the outer rotor are housed in a rotor mounting portion formed in the shape of the rear portion of the oil pump, and an oil inlet groove and an oil drain groove are formed on a side surface of the rotor mounting portion.
Wherein the inner rotor is eccentrically disposed in an inner space of the outer rotor.
And an oil pipe for supplying oil into the oil pump is connected to the oil inlet groove.
Wherein the oil discharge groove is connected to an oil passage formed in the rear output shaft so as to supply oil to a main oil passage formed inside the rear output shaft.
Wherein a sealing groove is formed in the oil pump front case and a seal ring is provided in the sealing groove to seal between the oil pump front case and the rear output shaft.
A bearing seating portion is formed on the outer surface of the boss portion of the rear case and a bearing for rotatably supporting the rear output shaft is provided on the bearing seating portion so that the bearing can be replaced without disassembling the rear case The auxiliary transmission of a four-wheel drive vehicle featuring.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020130077149A KR20150004107A (en) | 2013-07-02 | 2013-07-02 | transfer for 4 wheel drive vehicle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020130077149A KR20150004107A (en) | 2013-07-02 | 2013-07-02 | transfer for 4 wheel drive vehicle |
Publications (1)
Publication Number | Publication Date |
---|---|
KR20150004107A true KR20150004107A (en) | 2015-01-12 |
Family
ID=52476484
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020130077149A KR20150004107A (en) | 2013-07-02 | 2013-07-02 | transfer for 4 wheel drive vehicle |
Country Status (1)
Country | Link |
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KR (1) | KR20150004107A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110185760A (en) * | 2019-04-30 | 2019-08-30 | 中国航发南方工业有限公司 | The starshaped reducing gear of turbo oar engine |
-
2013
- 2013-07-02 KR KR1020130077149A patent/KR20150004107A/en not_active Application Discontinuation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110185760A (en) * | 2019-04-30 | 2019-08-30 | 中国航发南方工业有限公司 | The starshaped reducing gear of turbo oar engine |
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E902 | Notification of reason for refusal | ||
E90F | Notification of reason for final refusal | ||
E601 | Decision to refuse application |