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Electric-controlled switching mechanism for two-wheel drive and four-wheel drive of vehicle

A switching device, electronic control technology, applied in control devices, vehicle parts, transportation and packaging, etc., can solve problems such as damage to drive shafts and transfer cases

Inactive Publication Date: 2009-07-15
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantage of this type of switching device is that if the four-wheel drive is used to drive on a road with high friction, it will not automatically disconnect, which will cause damage to the car's tires, differential, drive shaft, transfer case, etc.

Method used

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  • Electric-controlled switching mechanism for two-wheel drive and four-wheel drive of vehicle
  • Electric-controlled switching mechanism for two-wheel drive and four-wheel drive of vehicle
  • Electric-controlled switching mechanism for two-wheel drive and four-wheel drive of vehicle

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Experimental program
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Embodiment Construction

[0013] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0014] exist figure 1 , the switch 11 is in the off state, the circuit has no current, the electromagnet 10 has no magnetic force, the iron ring 9, the plastic positioning sleeve 2 and the roller 6 rotate together with the outer shaft 7, and the roller 6 is in close contact with the tension of the spring 5 The concave arc surface 8 on the inner wall of the outer shaft 7, due to the limiting effect of the concave arc surface 8, the roller 6 will automatically be at the top of the concave arc surface 8, so that a certain gap will be generated between the roller 6 and the inner shaft 1, and the switching device It is in the disconnected state and does not transmit any torque. In the disconnected state, there is no friction between the roller 6 and the inner shaft 1, thus avoiding the generation of noise and the consumption of energy.

[0015] exist fig...

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PUM

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Abstract

The invention relates to a two-four-wheel-driven electrical control switching device of an automobile. The device consists of a mechanical part and a circuit part, wherein the mechanical part comprises an internal shaft, a plastic positioning sleeve, a spring, a roller, an external shaft and an iron ring, and the circuit part comprises an electromagnet, a conducting wire, a switch and a power supply. The invention has the advantages of simple structure, timing controllability, no noise generation or energy consumption when the circuit is disconnected, and automatic switch when the automobile runs on a normal road surface in the case of switching-on. The device can be used when the automobile moves forward or backward. A driver can realize the mutual switch between 2-wheel driving and 4-wheel driving of the automobile only by using the switch to control the connection and disconnection of the electromagnet.

Description

technical field [0001] The invention relates to an electronically controlled switching device for two-wheel drive and four-wheel drive in a half-time four-wheel drive vehicle. Background technique [0002] At present, there are mainly two types of switching devices for two-wheel drive and four-wheel drive in half-time four-wheel drive vehicles: one is uncontrollable, that is, as long as the rear wheels of the car slip, the switching device will be automatically connected, changing from two-wheel drive to four-wheel drive. Four-wheel drive; when the slipping phenomenon of the rear wheels of the car disappears, the switching device is automatically disconnected. This type of switching device mainly uses a traditional one-way clutch, and the timing of its connection or disconnection is determined by the front and rear transmission ratios. Its disadvantages are mainly that it cannot be turned on or off artificially; even in the off state, there is a certain amount of friction i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K17/354
Inventor 宋小文吴锋胡树根杨志家王耘王强岑达希马国宸
Owner ZHEJIANG UNIV