CN201029076Y

CN201029076Y - Driving mechanism

Info

Publication number: CN201029076Y
Application number: CNU2007200351732U
Authority: CN
Inventors: 吴纪顺
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-03-20
Filing date: 2007-03-20
Publication date: 2008-02-27
Anticipated expiration: 2017-03-20

Abstract

The utility model relates to a driving gear, which contains a driving shaft, an upper field yoke, a moveable iron core, an inner field yoke, a magnetic shielding sleeve, a driving coil and a lower field yoke. The characteristics of the utility model are that: the crossing of the upper head of the moveable iron core with a T shape section and the cylindrical face at the lower of the moveable iron core has a circular flute; wherein the circular flute has a lower opening with a reversal angle; and a reversal V shape conical surface is positioned in the inner surface of the inner field yoke which closely leans to the cylindrical face at the lower of the moveable iron core. when the utility model is positioned at the locking position, the compact are of the moveable iron core and the inner field yoke is increased by 15 percent to 16 percent and the gap between the outer circumference at the lower of the moveable iron core and the inner surface of the inner field yoke is increased, thus effectively increasing the magnetic efficiency, reducing magnetic loss and enhancing the retentivity of the locking position.

Description

Driving mechanism

Technical field

The utility model is the driving mechanism that is widely used in field such as electric, machinery, especially a kind of driving mechanism with Electromagnetic Drive, permanent magnetism locking.

Background technology

Existing driving mechanism has forms such as hydraulic pressure, pneumatic, spring, electromagnetism, has brought into play certain effect in all trades and professions, but these mechanism driving complexity, and parts are more, ubiquity manufacturing cost height, problem such as the fault point is many, useful life is short.And the driving mechanism of existing Electromagnetic Drive permanent magnetism locking, because reasons in structure, confining force is undesirable, influence is used, its shortcoming is to improve the permanent magnetism confining force, must preserve enough gaps into guaranteeing magnetic circuit as possible by contact-making surface between inner yoke and moving iron core, thereby contact-making surface must reduce, thereby influenced contact retention.

Summary of the invention

Technical problem to be solved in the utility model: be to provide a kind of and can reduce transmission link, reduce cost, the fault point is few, complete machine quality height, long service life, and adopts the driving mechanism of Electromagnetic Drive, permanent magnetism locking.

For solving above technical problem, the technical scheme that is adopted is such: the utility model comprises driving shaft, upper magnet yoke, moving iron core, inner yoke, permanent magnet, magnetic screen cover, drive coil and lower yoke, it is characterized in that: be the head portion of "T"-shaped moving iron core and the intersection, the face of cylinder of moving iron core lower beam portion at section, design the annular groove of an end opening band chamfering, at inner surface, the taper seat of one " eight " font is set near the inner yoke of moving the iron core lower beam portion face of cylinder.

Because adopt above technical scheme, its effect is conspicuous:

1, when latched position, can make the contact area of iron core and inner yoke increase by 15～16%.

2, increase gap between moving iron core lower beam portion's periphery and the inner yoke inner surface, can effectively improve magnetic efficiency like this, reduced magnetic loss, increased the confining force of latched position.

Description of drawings

Fig. 1 is the utility model sectional structure chart, also is lock-out state figure.

Fig. 2 is the released state figure of Fig. 1.

Among the figure: 1, driving shaft 2, upper magnet yoke 3, moving iron core 4, inner yoke 5, permanent magnet 6, magnetic screen cover 7, drive coil 8, lower yoke

Embodiment

As Fig. 1, Fig. 2, the utility model comprises driving shaft (1), upper magnet yoke (2), moving iron core (3), inner yoke (4), permanent magnet (5), magnetic screen cover (6), drive coil (7), lower yoke (8), it is characterized in that: be the head portion of "T"-shaped moving iron core (3) and the intersection, the face of cylinder of moving iron core (3) lower beam portion at section, be provided with the annular groove of an end opening band chamfering, at inner surface near the inner yoke of moving iron core (3) the lower beam portion face of cylinder, be provided with the taper seat of " eight " font, make between inner yoke inner surface and the moving iron core periphery and increase the gap, improved magnetic efficiency effectively, reduce magnetic loss, can increase the confining force of latched position.The utility model when mounted, be upper magnet yoke (2), moving iron core (3), inner yoke (4) from top to bottom, drive money circle (7), lower yoke (8), run through up and down wherein by driving shaft (1), in being peripherally equipped with magnetic screen cover (6), housing is fastening with upper magnet yoke and lower yoke respectively with screw up and down.Between inner yoke (4) and magnetic screen cover (6), annular permanent magnnet (5) is housed.

The utility model at work, as Fig. 1, at this moment, when drive coil (7) passes to the clockwise direction electric current, moving iron core (3) generates an electromagnetic field, and with the magnetic field acting in conjunction of permanent magnet (5), force moving iron core (3) to move downward, at this moment, the head and inner yoke (4) closure of moving iron core, its bottom and lower yoke (8) closure, and keep attraction to be tending towards maximum, be used to lock driven mechanism, and remain on corresponding position.

As Fig. 2, when drive coil (7) passes to the counter clockwise direction electric current, moving iron core (3) generates an electromagnetic field, and with the magnetic field acting in conjunction of permanent magnet (5), force moving iron core (3) to move upward, at this moment, the head and upper magnet yoke (2) closure of moving iron core, its bottom breaks away from lower yoke (8), and driven mechanism is resetted.

Claims

1. driving mechanism, it comprises driving shaft (1), upper magnet yoke (2), moving iron core (3), inner yoke (4), permanent magnet (5), magnetic screen cover (6), drive coil (7), lower yoke (8), it is characterized in that: be the head portion of "T"-shaped moving iron core (3) and the intersection, the face of cylinder of moving iron core (3) lower beam portion at section, be provided with the annular groove of an end opening band chamfering; At inner surface, be provided with the taper seat of " eight " font near the inner yoke of moving iron core (3) the lower beam portion face of cylinder.