CN2338229Y

CN2338229Y - Electrical power-asisted steering mechanism

Info

Publication number: CN2338229Y
Application number: CN 98229457
Authority: CN
Inventors: 潘光显
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-09-03
Filing date: 1998-09-03
Publication date: 1999-09-15
Anticipated expiration: 2008-09-03

Abstract

The utility model discloses an electrical power-assisted steering mechanism for the steering mechanism of vehicles. A flat key is arranged on a driving shaft, and a spline tooth is arranged on a driven shaft. Internal splines are sheathed on the flat key of the driving shaft and the spline tooth of the driven shaft. A steering contact head and a stalling contact ring are arranged on the driving shaft. A right steering contact ring and a left steering contact ring are arranged on the driven shaft. An insulating rubber pad and a conductive reed are respectively arranged on the lateral faces of the dummy clubs of the right steering contact ring and the left steering contact ring. The driven shaft is connected with a motor in a transmission connection. A control power source is composed of four thyristors which can be turned off. The utility model has the advantages of simple structure, low cost, small volume, easy maintenance, safe and convenient operation, etc.

Description

The electric turning booster device

The utility model relates to the electric turning booster device that uses on a kind of motor turning machine, belongs to motor turning machine auxiliary accessories field.

At present, the steering booster that on the steering box of self-propelled vehicle, uses in the prior art, generally all adopt the fluid pressure type servo-unit, these fluid pressure type steering boosters are owing to need to adopt precise hydraulics such as Hydraulic Pump, power cylinder, control cock parts in addition, institute so that there is complex structure, volume is big, cost of manufacture is high, easy oil leakage, shortcoming such as easy-maintaining not.

The purpose of this utility model is: a kind of simple in structure, cheap, volume is little, maintenance is easy, easy to use electric turning booster device is provided.

The utility model is to constitute like this: it comprises imput shaft (1), driven shaft (2), motor (3), control power supply (4), imput shaft (1) flexibly connects with driven shaft (2), flat key (5) is housed on last steering shaft (1), spline tooth (6) is arranged on driven shaft (2), inner spline housing (7) is contained on the spline tooth (6) of the flat key (5) of imput shaft (1) and driven shaft (2), and the internal spline of inner spline housing (7) is slightly than the wide gap q of flat key (5), on imput shaft (1), be equipped with and turn to contact (8) and stall contact ring (9), right steering contact ring (10) and left steering contact ring (11) are housed on driven shaft (2), in turning to contact (8) He in each contact ring, all be lined with insulating washer (12), boss side surfaces at right steering contact ring (10) and left steering contact ring (11) is equipped with insulation rubber cushion (13) and conductive reed (14) respectively, motor (3) is in transmission connection with driven shaft (2), control power supply (4) is made up of four turn-off thyristor T1～T4, the anode of T1 and T4 and turn to contact (8) to connect the positive pole of direct supply E, the negative electrode of T2 and T3 and stall contact ring (9) connect the negative pole of direct supply E, the control utmost point of T1 and T2 connects right steering contact ring (10), the control utmost point of T4 and T3 connects left steering contact ring (11), the negative electrode of T1 connects the anode of T3 and input electrode one end of motor (3), and the negative electrode of T4 connects the other end of the input electrode of the anode of T2 and motor (3).

Since adopted technique scheme, the utility model compared with prior art have simple in structure, cheap, volume is little, maintenance is easy, advantage such as safe in utilization, convenient.Earlier bearing circle (15) is contained in the upper end of imput shaft (1) during use, driven shaft (2) is connected with the direction machine of self-propelled vehicle, when steering wheel rotation not, right steering contact ring (10) is against to turn to insulation rubber cushion (13) on the left steering contact ring (11) and makes its conductive reed (14) not contact and only contact with stall contact ring (9) with turning to contact (8) on the contact (8), at this moment the control utmost point power connection negative pole of T1～T4, all not conductings, motor (3) stall; When turning left steering wheel rotation, because the internal spline of inner spline housing (7) is slightly than the wide gap q of flat key (5), so imput shaft (1) is with respect to driven shaft (2) rotation one angle, left steering contact ring (11) breaks away from stall contact ring (9) like this, and compression insulation rubber cushion (13), and its conductive reed (14) is contacted with turning to contact (8), at this moment T3, T4 conducting, T1, T2 end, and motor (3) drives driven shaft (2) and the direction machine turns left, and makes the self-propelled vehicle turnon left; Its working process is identical with turnon left during right-hand corner, and just at this moment T3, T4 end T1, T2 conducting; When stopping operating bearing circle in the process of turning, at this moment motor (3) can change slightly to original direction, make driven shaft (2) slightly change a low-angle, like this its conductive reed (14) will with turn to contact (8) to break away from and contact with stall contact ring (9), thereby motor (3) is stopped operating; When in a single day the utility model broke down, its steering torque passed to driven shaft (2) by imput shaft (1) by flat key (5) and inner spline housing (7), and chaufeur still can be controlled vehicle directional like this.

Accompanying drawing 1 is a structural representation of the present utility model;

Accompanying drawing 2 is the A-A cutaway view of accompanying drawing 1;

Accompanying drawing 3 is the B-B cutaway view of accompanying drawing 1;

Accompanying drawing 4 is schematic circuit diagram of the present utility model.

Embodiment of the present utility model: in the present embodiment, motor (3) adopts direct current torque motor, imput shaft (1) is contained in driven shaft (2) upper end hole makes its flexible connection, on imput shaft (1), load onto flat key (5), producing spline tooth (6) on driven shaft (2) can mesh it with inner spline housing (7), inner spline housing (7) is contained on the spline tooth (6) of the flat key (5) of imput shaft (1) and driven shaft (2), and the internal spline that makes inner spline housing (7) is slightly than the wide gap q of flat key (5), the q value is controlled at 3～6 millimeter, on imput shaft (1), load onto and turn to contact (8) and stall contact ring (9), on driven shaft (2), load onto right steering contact ring (10) and left steering contact ring (11), in turning to contact (8) He in each contact ring, all fill up insulating washer (12), are insulated in they and imput shaft (1) and driven shaft (2), load onto insulation rubber cushion (13) and conductive reed (14) respectively in the boss side surfaces of right steering contact ring (10) and left steering contact ring (11), motor (3) and following steering shaft (2) are in transmission connection, control power supply (4) is formed with four turn-off thyristor T1～T4, with the anode of T1 and T4 and turn to the meet sb. at the airport positive pole of the direct supply E on the motor-car of contact (8), the negative pole that negative electrode and the stall contact ring (9) of T2 and T3 met direct supply E, the control utmost point of T1 and T2 connects right steering contact ring (10), the control utmost point of T4 and T3 connects left steering contact ring (11), the negative electrode of T1 connects the anode of T3 and input electrode one end of motor (3), and the negative electrode of T4 connects the other end of the input electrode of the anode of T2 and motor (3).

Claims

1, a kind of electric turning booster device, it comprises imput shaft (1), driven shaft (2), motor (3), control power supply (4), it is characterized in that: imput shaft (1) flexibly connects with driven shaft (2), flat key (5) is housed on imput shaft (1), spline tooth (6) is arranged on driven shaft (2), inner spline housing (7) is contained on the spline tooth (6) of the flat key (5) of imput shaft (1) and driven shaft (2), and the internal spline of inner spline housing (7) is slightly than the wide gap q of flat key (5), on imput shaft (1), be equipped with and turn to contact (8) and stall contact ring (9), right steering contact ring (10) and left steering contact ring (11) are housed on driven shaft (2), in turning to contact (8) He in each contact ring, all be lined with insulating washer (12), boss side surfaces at right steering contact ring (10) and left steering contact ring (11) is equipped with insulation rubber cushion (13) and conductive reed (14) respectively, motor (3) is in transmission connection with following steering shaft (2), control power supply (4) is made up of four turn-off thyristor T1～T4, the anode of T1 and T4 and turn to contact (8) to connect the positive pole of direct supply E, the negative electrode of T2 and T3 and stall contact ring (9) connect the negative pole of direct supply E, the control utmost point of T1 and T2 connects right steering contact ring (10), the control utmost point of T4 and T3 connects left steering contact ring (11), the negative electrode of T1 connects the anode of T3 and input electrode one end of motor (3), and the negative electrode of T4 connects the other end of the input electrode of the anode of T2 and motor (3).