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Controllable clutch transfer case for four-wheel drive vehicle

A four-wheel drive, transfer case technology, applied in the field of transfer case, can solve the problems of slow response speed and poor passability

Inactive Publication Date: 2008-12-24
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with full-time four-wheel drive, timely four-wheel drive has the advantage of good fuel economy, but slow response to slipping and poor passability

Method used

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  • Controllable clutch transfer case for four-wheel drive vehicle
  • Controllable clutch transfer case for four-wheel drive vehicle

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Embodiment Construction

[0024] The following describes embodiments of the present invention based on the drawings.

[0025] figure 1 ~ Figure 3 is an illustration of an embodiment of the present invention. figure 1 It is a cross-sectional view of the assembly. Figure 2 depicts the assembly diagram of the inner shaft, outer sleeve and cylindrical roller of the key transmission components. Figure 3 is an embodiment that uses an electric drive to control the clutch of the transfer case.

[0026] Such as figure 1As shown, the inner shaft 8 is installed on the transfer case 3 through the bearing 2, the bearing 15 and the bearing seat 1 and the bearing seat 16, and the output of the inner shaft 8 is connected to the main reducer of the non-driving axle in the two-drive mode. The outer sleeve 4 is mounted on the inner shaft 8 through a bearing 6 to allow relative free movement of the outer sleeve 4 and the inner shaft 8. The sprocket as the driven wheel 5 is fixed to one end of the outer sleeve 4 by a key. Par...

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Abstract

The present invention relates to a controllable braking transfer case of four-wheel drive vehicle, which is used in the four-wheel drive transmission system. In the technical proposal, an outer shaft with an annular race is arranged on the inner shaft with a polygonal outer race; cylindrical rollers with the same sides as the polygon are arranged between the inner race and the outer race; a cage is used for uniformly distributing the rollers; a driven wheel is fixedly arranged at one end of the outer shaft sleeve; the diameter of the annular race is more than the distance of two parallel sides the outer race plus the total size of the diameters of the two rollers; the inner shaft is fixedly provided with a spring seat; the peripheral sleeve of the inner shaft is provided with a passive drive plate; the poking claw at the end of the cage is inserted in the corresponding slot of the passive drive plate; one end of a centralizing spring is fixed on the spring seat and the other end is inserted into the slot of the passive drive plate; and a braking mechanism is arranged in the position with the passive drive plate between the inner shaft and the outer shaft sleeve. The controllable braking transfer case has the characteristics of high transmission efficiency, fast reaction, and simple and reliable structure.

Description

Technical field [0001] The invention relates to an inter-axle transfer device of a four-wheel drive vehicle, in particular to a transfer case with the characteristics of a timely four-wheel drive. Background technique [0002] In order to achieve four-wheel drive, the output power of the gearbox is not only directly transmitted to the main reducer of one axle, but also part of the power is distributed to the other axle through the transfer case. If there is no inter-axle differential device in the transfer case, since the front and rear wheels may have inconsistent motion, the transfer case must be disengaged and used in two-wheel drive mode when driving on hard roads. Due to inconvenience, such systems are mostly used in low-end off-road vehicles. The existing four-wheel drive system generally uses a central differential to realize the power distribution on the front and rear axles and the differential between the front and rear axles. When one wheel axle slips, in order to make...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K17/344B60K17/348
Inventor 钟志华黄智吴乙万
Owner HUNAN UNIV
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