CN102610358B

CN102610358B - Two gap structure double-push magnetic device

Info

Publication number: CN102610358B
Application number: CN201210101050.XA
Authority: CN
Inventors: 梁昌勇
Original assignee: Individual
Current assignee: Guangdong Universal Power Ltd By Share Ltd; Hepu Power Co ltd
Priority date: 2012-04-09
Filing date: 2012-04-09
Publication date: 2015-10-21
Anticipated expiration: 2032-04-09
Also published as: CN102610358A

Abstract

Two gap structure double-push magnetic device, comprise tubular shell, coil, two with dynamic iron core, two static iron cores, the cushion blocking of axle, coil is loop configuration, coil has two and left and right is embedded in tubular shell respectively, two dynamic iron cores are slidably arranged in tubular shell and are also through in the ring of two coils respectively, static iron core is arranged on tubular shell two ends, the axle of two dynamic iron cores passes outside two static iron cores respectively, it is characterized in that static iron core inner side end shaft core position is provided with annular boss, the dynamic iron core end face outside of corresponding annular boss is provided with annular counterbore; Or dynamic iron core end face outside shaft core position is provided with annular boss, and the static iron core inner side end of corresponding annular boss is provided with annular counterbore, is provided with beam between annular counterbore end face and annular boss end face.Compared with the prior art the present invention, has good damping result, the advantage that thrust is large.

Description

Two gap structure double-push magnetic device

Technical field

The present invention relates to a kind of magnetic apparatus of brake, refer to double-push magnetic device especially.

Background technology

Existing double-push magnetic device as shown in Figure 1, coil is provided with in drum-shaped housing, thiol is provided with dynamic iron core and static iron core, when coil does not lead to state, dynamic iron core and static iron core adjacent face are flat surface, namely the gap that two planes are formed is smooth air-gap, when the coil is energized, move and can produce air-gap field between iron core and static iron core air-gap, static iron core can attract dynamic iron core to move, because dynamic iron core and static iron core are permeability magnetic material, static iron core can produce metal strike sound when attracting dynamic iron core to move, in order to eliminate this impact noise, usually between dynamic iron core and static iron core, cushion blocking is provided with, when the coil is energized, dynamic iron core is contact damping pad first, cushion blocking is compressed to certain thickness makes iron core and static iron core bump against, this structure Problems existing is: if cushion blocking is too thick, dynamic excesssive gap between iron core and static iron core, between air-gap, air-gap field weakens, between sound iron core, electromagnetic force declines, brake may be caused to open, if cushion blocking is too thin, the cushioning effect played is limited, and dynamic iron core is close to there being very large acceleration during cushion blocking, thin cushion blocking also easily damages, its life-span is reduced, there is noise.

Summary of the invention

The object of the invention is: for the deficiency of existing magnetic apparatus, a kind of noise of proposition is low, and the cushion blocking life-span is long, the magnetic apparatus structure that thrust is large.

The object of the present invention is achieved like this: comprise tubular shell, coil, two with dynamic iron core, two static iron cores, the cushion blocking of axle, coil is loop configuration, coil has two and left and right is embedded in tubular shell respectively, two dynamic iron cores are slidably arranged in tubular shell and are also through in the ring of two coils respectively, static iron core is arranged on tubular shell two ends, the axle of two dynamic iron cores passes outside two static iron cores respectively, its special feature is that static iron core inner side end shaft core position is provided with annular boss, and the dynamic iron core end face outside of corresponding annular boss is provided with annular counterbore; Or dynamic iron core end face outside shaft core position is provided with annular boss, and the static iron core inner side end of corresponding annular boss is provided with annular counterbore, is provided with beam between annular counterbore end face and annular boss end face.

During work, solenoid is energized, and dynamic iron core and static iron core can form two air-gap fields, one is iron core outer face and static iron core end face, another counterbore end face and raised head face, two air-gap fields all can produce magnetic pull, make the stressed movement of iron core, vibration damping is lined with certain thickness, buffering distortion can be realized, and have certain anti-pressure ability, can ensure can not damage under pressure, so buffer shock-absorbing is effective, the life-span is long.On the other hand, dynamic iron core end face and static iron core end clearance are due to the impact not by beam, so can design smaller, the magnetic in gap is greatly close, adds gap and is in step outside, and the area forming air-gap field is large, according to magnetic pull formula (B-air gap flux density, S-air gap surface area, -air-gap magnetic capacity) known, this air gap can form larger magnetic force, and counterbore end face and raised head face gap larger, and area is little, even if air gap flux density is low, also less on the impact of magnetic apparatus thrust, so, two gap structures had both ensured larger magnetic thrust, achieved again buffering noise abatement.

In order to better realize cushioning noise abatement, between counterbore end face and round platform end face, establish two cushion blockings, one is that hardness is large, thickness is thin, and another hardness is little, thickness is large, the large soft cushion blocking of decrement, like this, better can ensure that gap between counterbore end face and raised head face is in control range.

Compared with the prior art, its beneficial effect is in the present invention:

Good damping result, thrust is large.

Accompanying drawing illustrates:

Fig. 1 is existing double-push magnetic device structural representation;

Fig. 2 is the structural representation of the embodiment of the present invention 1;

Fig. 3 is part explosive view of the present invention;

Fig. 4 is the structural representation of the embodiment of the present invention 2;

Figure number illustrates: dynamic iron core 1, hard cushion blocking 2, the annular counterbore 1a of the annular boss 7a of mandrel 3, soft cushion blocking 4, coil 5, tubular shell 6, static iron core 7, static iron core, the inner side end 7b of static iron core, dynamic iron core, the end face outside 1b of dynamic iron core, dynamic the annular boss 1c of iron core, the annular counterbore 7c of static iron core.

Embodiment 1: as Fig. 2, shown in 3, the present invention includes tubular shell 6, coil 5, two with the dynamic iron core 1 of axle 3, two static iron cores 7, cushion blocking, coil 5 is loop configuration, coil 5 has two and left and right is embedded in tubular shell 6 respectively, two dynamic iron cores 1 are slidably arranged in tubular shell 6 and are also through in the ring of two coils 5 respectively, static iron core 7 is arranged on tubular shell 6 two ends, the axle 3 of two dynamic iron cores 1 passes outside two static iron cores 7 respectively, its special feature is that static iron core 7 inner side end 7b shaft core position is provided with annular boss 7a, the dynamic iron core 1 end face outside 1b of corresponding annular boss 7a is provided with annular counterbore 1a, beam is provided with between annular counterbore 1a end face and annular boss 7a end face.

Damping is lined with two, and one is the hard cushion blocking 2 that hardness is large, thickness is thin, decrement is little, the soft cushion blocking 4 that another hardness is little, thickness is large, decrement is large.

Gap delta 1 between annular counterbore 1a end face and annular boss 7a end face is larger than the gap delta 2 between static iron core 7 inner side end 7b and dynamic iron core 1 end face outside 1b.

Embodiment 2: as shown in Figure 4, the present embodiment is on the basis of embodiment 1, and dynamic iron core 1 end face outside 1b shaft core position is provided with annular boss 1c, and the static iron core 7 inner side end 7b of corresponding annular boss is provided with annular counterbore 7c.

Claims

1. pair gap structure double-push magnetic device, comprise tubular shell, coil, two with the dynamic iron core of axle, two static iron cores, cushion blocking, coil is loop configuration, coil has two and left and right is embedded in tubular shell respectively, two dynamic iron cores are slidably arranged in tubular shell and are also through in the ring of two coils respectively, static iron core is arranged on tubular shell two ends, the axle of two dynamic iron cores passes outside two static iron cores respectively, it is characterized in that static iron core inner side end shaft core position is provided with annular boss, the dynamic iron core end face outside of corresponding annular boss is provided with annular counterbore, move and be provided with beam between the annular counterbore end face of iron core and the annular boss end face of static iron core, dynamic gap between the annular counterbore end face of iron core and the annular boss end face of static iron core is larger than the gap between the end face outside the end face inside static iron core except annular boss and dynamic iron core except annular counterbore, or dynamic iron core end face outside shaft core position is provided with annular boss, the static iron core inner side end of corresponding annular boss is provided with annular counterbore, be provided with beam between the annular counterbore end face of static iron core and the annular boss end face of dynamic iron core, the gap between the annular counterbore end face of static iron core and the annular boss end face of dynamic iron core is larger than the gap between the end face outside the end face inside static iron core except annular counterbore and dynamic iron core except annular boss.

2. according to claim 1 pair of gap structure double-push magnetic device, it is characterized in that between counterbore end face and round platform end face, establish two cushion blockings, one is that hardness is large, thickness is thin, the little hard cushion blocking of decrement, and another hardness is little, thickness is large, the large soft cushion blocking of decrement.