CN2625239Y

CN2625239Y - Electromagnetic strengthener

Info

Publication number: CN2625239Y
Application number: CN 03254103
Authority: CN
Inventors: 何耀华
Original assignee: Wuhan University of Technology WUT
Current assignee: Wuhan University of Technology WUT
Priority date: 2003-05-21
Filing date: 2003-05-21
Publication date: 2004-07-14
Anticipated expiration: 2013-05-21

Abstract

The utility model relates to device utilizing electromagnetic forces as a drive source, in particular to an electromagnetic booster, which is characterized in that the electromagnetic booster comprises a shell (1), a coil (2), a magnet (3), a shaft (4) and a bearing (5). Wherein, a cavity is arranged inside the shell (1). The shaft (4) is positioned through the cavity of the shell (1). Both ends of the shaft (4) are supported on the shell through the bearing (5). The coil (2) and the magnet (3) are arranged in the cavity of the shell (1). The shaft (4) in the cavity is positioned through the coil (2) and the magnet (3). Besides, the magnet (3) is fixed on the shell (1). The coil (2) is arranged on the shaft (4) or the shell (1). The magnet (3) is positioned on the shaft (4). The utility model is characterized by simple design and capacity to generate steering force.

Description

The electromagnetism servo-unit

Technical field

The utility model relates to a kind of device that utilizes electromagnetic force as propulsion source, is used for producing the servo-unit of propelling thrust when relating to motor turning specifically in electromagnetic type power steering device.

Background technology

When motor turning, for reducing the required actuating force of pilot control steering handwheel, reduce the labour intensity of chaufeur, some vehicle servo steering system, its pattern have two kinds of fluid pressure type and electrodynamic types.The applicant applied in 03 month 20 days in 2003 one patent of invention name be called " electromagnetic type automobile power steering device " (number of patent application 03118840.0) device in relate to a kind of electromagnetism servo-unit.

The utility model content

The purpose of this utility model can produce handling maneuver power, electromagnetism servo-unit simple in structure in electromagnetic type power steering device when being to provide a kind of motor turning.

To achieve these goals, the technical solution of the utility model is: the electromagnetism servo-unit, it is characterized in that it is made up of shell 1, coil 2, magnet 3, axle 4 and bearing 5, and shell 1 is interior to be cavity, axle 4 passes the cavity of shell 1, and its two ends are supported on the shell 1 by bearing 5; Coil 2, magnet 3 are positioned at shell 1 cavity, and the axle 4 in the cavity passes coil 2, magnet 3.

Described magnet 3 is fixed on the shell 1, and coil 2 is fixed on the axle 4.

Described coil 2 is fixed on the shell 1, magnet 3 is fixed on the axle 4.

Described magnet 3 can be the permanent magnet of diametrical magnetization, also can be the electromagnet that produces radial magnetic field.

In the two one of described shell 1 and axle 4 is a connecting element, and another is a movable part.

The utility model adopts said structure, when coil 2 is logical when going up the direct current (DC) of its directions of current such as Fig. 3, just produce to the right an electromagnetic force F.If axle 4 is connecting elements, then coil 2 moves right under the effect of electromagnetic force F together with shell 1; If shell is a connecting element, according to application force and antagonistic force principle, then magnet 3 is moved to the left together with axle 4.

Change the direction of current that is added on the coil 2, the moving direction of shell (or axle) under the electromagnetic force effect is just opposite with the moving direction of above-mentioned counterpart.This shows,, only need the both positive and negative polarity reversal connection of coil just can be realized if need to change the moving direction of electromagnetism servo-unit movable parts.

The utility model simplicity of design can produce handling maneuver power.

Description of drawings

Fig. 1 is utility model embodiment 1 structural representation

Fig. 2 is utility model embodiment 2 structural representations

Fig. 3 is the utility model fundamental diagram

Fig. 4 is that Fig. 3 is along A-A line cutaway view

The specific embodiment

Embodiment 1: as shown in Figure 1, the electromagnetism servo-unit is made up of shell 1, coil 2, magnet 3, axle 4 and bearing 5, and magnet 3 is fixed on the shell 1, and coil 2 is fixed on the axle 4.Wherein magnet 3 can be the permanent magnet of diametrical magnetization, also can be the electromagnet that produces radial magnetic field; In the two one of shell 1 and axle 4 is a connecting element, and another is a movable part.

Embodiment 2: substantially the same manner as Example 1 as shown in Figure 2, difference only is: coil 2 is fixed on the shell 1, magnet 3 is fixed on the axle 4.

The principle of work of embodiment 2 as shown in Figure 3, Figure 4.Fig. 3 provides is that magnet 3 is fixed together with axle 4 and the magnet excircle is that the N utmost point, inner periphery are the structures of the S utmost point (the magnet excircle also can the S utmost point, inner periphery be the N utmost point).When coil 2 is logical when going up the direct current (DC) of its directions of current such as Fig. 3, just produce to the right an electromagnetic force F.If axle 4 is connecting elements, then coil 2 moves right under the effect of electromagnetic force F together with shell 1; If shell is a connecting element, according to application force and antagonistic force principle, then magnet 3 is moved to the left together with axle 4.

Magnet 3 is fixed on the shell, the structure of coil stationary on axle, and the principle of work of embodiment 1 and structure shown in Figure 3 are identical.

Claims

1, electromagnetism servo-unit is characterized in that it is made up of shell (1), coil (2), magnet (3), axle (4) and bearing (5), is cavity in the shell (1), and spool (4) pass the cavity of shell (1), and its two ends are supported on the shell (1) by bearing (5); Coil (2), magnet (3) are positioned at shell (1) cavity, and the axle (4) in the cavity passes coil (2), magnet (3).

2, electromagnetism servo-unit according to claim 1 is characterized in that described magnet (3) is fixed on the shell (1), and coil (2) is fixed on the axle (4).

3, electromagnetism servo-unit according to claim 1 is characterized in that described coil (2) is fixed on the shell (1), magnet (3) is fixed on the axle (4).

4, according to claim 1 or 2 or 3 described electromagnetism servo-units, it is characterized in that described magnet (3) can be the permanent magnet of diametrical magnetization, also can be the electromagnet that produces radial magnetic field.

5, according to claim 1 or 2 or 3 described electromagnetism servo-units, it is characterized in that in the two one of described shell (1) and axle (4) is connecting element, another is a movable part.