JPH0667148U - Car transfer equipment - Google Patents

Abstract

(57) [Summary] [Object] To provide a transfer device capable of forming an all-wheel drive vehicle with a short wheelbase and avoiding extension of the wheelbase when a vehicle that drives only rear wheels is made to have all-wheel drive. [Structure] A transmission case 5 is arranged at a rear portion of an engine mounted on a front portion of a vehicle body 2, and an output shaft 6 provided at a rear end of the transmission case 5 is connected to a rear shaft 7 via a propeller shaft 10. A transfer case 12 is provided on the side surface of the transmission case 4. Transfer shaft 1 provided at the front end of transfer case 12
By providing the transfer gear 14 for connecting 3 to the transmission gear 5 and the transfer shaft 18 for connecting the transfer shaft 13 to the front shaft 15, an all-wheel drive vehicle is realized with a short wheel base.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a power transmission device for an all-wheel drive vehicle, and more particularly to a power transmission device capable of preventing an increase in a wheel base due to the all-wheel drive.

[0002]

[Prior art]

 A transmission case is arranged in the rear part of the engine mounted in the front part of the vehicle, and the output shaft provided at the rear end of the transmission case is connected to the rear shaft via a propeller shaft to drive all wheels of the vehicle. At that time, in the past, a transfer case was attached to the rear of the transmission case. The output shaft provided at the rear end of the transfer case drives the rear shaft, and the transfer shaft provided at the front end of the transfer case drives the front shaft.

Therefore, when the transfer case is provided in the rear portion of the transmission case as described above, it is necessary to extend the wheel base by an amount corresponding to the length of the transfer case to secure the refraction angle of the propeller shaft. In addition, there is a problem that it is not possible to establish an all-wheel drive vehicle on a short wheel base, or it is not possible to use a common frame for both a standard vehicle that drives only the rear wheels and an all-wheel drive vehicle that also drives the front wheels. It was

Further, as disclosed in, for example, Japanese Utility Model Application Laid-Open No. 59-16224, there is one in which a transfer case is sandwiched between an engine and a transmission case to prevent expansion of a wheel base. However, even in this case, if the transfer case is removed to form a vehicle that drives only one of the front and rear wheels, it is necessary to change the coupling structure between the engine and the transmission case and the mounting positions of these. I will end up.

[0005]

[Problems to be solved by the device]

 The present invention has been made in view of such circumstances, and it is possible to establish an all-wheel drive vehicle with a short wheelbase, or even if a vehicle that drives only the rear wheels is all-wheel drive. The challenge is to provide a transfer device that does not require the extension of the base.

[0006]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention provides a transmission case at the rear of an engine mounted on the front of a vehicle body, and connects an output shaft provided at the rear end of the transmission case to the rear shaft via a propeller shaft. In such a vehicle, a transfer case is provided on the side surface of the transmission case. In addition, a transfer gear that connects a transfer shaft provided at a front end of the transfer case to a transmission gear is provided, and a transfer shaft that connects the transfer shaft to the front shaft is provided.

[0007]

[Action]

 When the transmission is driven to drive the transmission gear, the output shaft of the transmission is driven and the transfer shaft is also driven via the transfer gear. Therefore, the driving force is transmitted from the output shaft provided at the rear end of the transmission case to the rear shaft via the propeller shaft, and the driving force is also transmitted from the transfer shaft to the front shaft via the transfer shaft.

An output shaft for outputting the driving force on the rear shaft side is provided at the rear end of the transmission case, while a transfer case equipped with a transfer shaft for outputting the driving force on the front shaft side is provided on the side face of the transmission case. It is provided. For this reason, the relative position of the output shaft and the rear shaft does not change depending on the presence or absence of the transfer case, and the refraction angle of the propeller shaft does not change when the transfer case is attached. Or it is not necessary to extend the wheelbase even if a vehicle that drives only the rear axle is made to have all-wheel drive.

[0009]

【Example】

 Embodiments of the present invention will be described below in detail with reference to the drawings. 1 is a schematic plan view of an automobile showing an embodiment of the present invention, FIG. 2 is a side view of FIG. 1, FIG. 3 is a sectional view showing a specific example of an internal mechanism of a transfer case, and FIG. 4 is A- of FIG. FIG. 3 is a cross-sectional view of A, in which a transmission 3 is provided at the rear of an engine (not shown) mounted on the front of a vehicle body 2 of an automobile 1.

The transmission 3 is configured by accommodating a mechanical transmission mechanism such as a transmission gear 5 inside a transmission case 4 and providing an output shaft 6 at the rear end. The output shaft 6 is driven to rotate in synchronization with the transmission gear 5, and the output shaft 6 and the input shaft 9 of the differential device 8 of the rear shaft 7 are connected via a propeller shaft 10. . 11 is a cab.

On the other hand, a transfer shaft 13 is provided at the front end of a transfer case 12 attached to the side surface of the transmission case 4, and the transfer shaft 13 and the transmission gear 5 are connected via a transfer gear 14. Then, by interlocking the input shaft 17 of the differential device 16 of the transfer shaft 13 and the front shaft 15 via the transfer shaft 18, the transmission gear 5 is transferred via the transfer gear 14, the transfer shaft 13, and the transfer shaft 18. The driving force is transmitted to the shaft 15.

As shown in FIGS. 3 and 4, the transfer gear 14 is rotatably and slidably attached to the shaft 19 while being constantly meshed with the transfer shaft 13. Then, the shift gear 20 engaged with the transfer gear 14 is moved in the left-right direction in FIG. 3 to slide the transfer gear 14 along the shaft 19, so that the transfer gear 14 becomes the transmission gear 5. It is arranged to select whether or not the meshing engagement is performed. Reference numeral 21 is a lever for controlling swing of the shift fork 20.

In the vehicle transfer device configured as described above, when the transfer gear 14 is located at the left end portion of the shaft 19 as shown by the solid line in FIG. Since they are not meshed with each other, the transfer shaft 13 does not rotate even if the transmission gear 5 rotates, and power is not transmitted to the front shaft 15 side. Therefore, when the transfer gear 14 is not meshed with the transmission gear 5 in this way, the driving force of the engine (not shown) is transmitted from the output shaft 6 of the transmission 3 to only the rear shaft 7.

However, when the transfer gear 14 is moved to the right end side of the shaft 19 as shown by the alternate long and short dash line in FIG. 3, the transfer gear 14 meshes with the transmission gear 5, so that the rotation of the transmission gear 5 is changed. It is transmitted to the transfer shaft 13 via 14. Therefore, in the state where the transfer gear 14 is meshed with the transmission gear 5 in this way, the transfer shaft 13 is driven as the transmission gear 5 rotates, so that the front shaft is passed through the transfer shaft 18. 15 differentials 16 are driven.

Further, a transfer shaft 13 is provided at the front end of the transfer case 12 attached to the side surface of the transmission case 4, and the driving force is transmitted from the transfer shaft 13 to the front shaft 15 via the transfer shaft 18. Therefore, by providing the transfer case 12, the positional relationship between the output shaft 6 and the rear shaft 7 of the differential device 8 is not changed, and an all-wheel drive vehicle can be realized with a short wheel base.

Although the transfer gear 14 is directly connected to the transmission gear 5 in the embodiment, other gears connected to the transfer gear 5, for example, a gear on the counter shaft side (not shown) is used. Power can also be transmitted to the transfer gear 14.

[0017]

[Effect of device]

 As is apparent from the above description, according to the vehicle transfer device of the present invention, when the transfer case is attached to the side surface of the transmission and the output shaft provided at the rear end of the transmission and the rear shaft are connected via the propeller shaft. In addition, because the transfer shaft and front shaft provided at the front end of the transfer case are connected via a transfer shaft, it is possible to build an all-wheel drive vehicle with a short wheel base and to drive only the rear wheels. Since there is no need to extend the wheel base when making the all-wheel drive system, it is possible to reduce the manufacturing cost of the all-wheel drive car by sharing the frame with the rear-wheel drive car.

[Brief description of drawings]

FIG. 1 is a schematic plan view of an automobile showing an embodiment of the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a cross-sectional view showing a specific example of an internal mechanism of a transfer case.

4 is a cross-sectional view taken along the line AA of FIG.

[Explanation of symbols]

 1 Car 2 Body 3 Transmission 4 Transmission Case 5 Transmission Gear 6 Output Shaft 7 Rear Shaft 8 Differential Gear 9 Input Shaft 10 Propeller Shaft 11 Cab 12 Transfer Case 13 Transfer Shaft 14 Transfer Gear 15 Front Shaft 16 Differential Gear 17 Input Shaft 18 Transfer shaft 19 Shaft 20 Fork 21 Lever

Claims (1)

[Scope of utility model registration request] 1. A vehicle in which a transmission case is arranged at a rear portion of an engine mounted on a front portion of a vehicle body, and an output shaft provided at a rear end of the transmission case is connected to the rear shaft via a propeller shaft, wherein the transmission is provided. A transfer case provided on the side of the case,
A transfer device for an automobile, comprising a transfer shaft provided at a front end of the transfer case, a transfer gear connecting the transfer shaft to a transmission gear, and a transfer shaft connecting the transfer shaft and the front shaft.