CN202584992U

CN202584992U - Dual-air-gap-structure dual-push magnetic force device

Info

Publication number: CN202584992U
Application number: CN 201220145343
Authority: CN
Inventors: 梁昌勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-04-09
Filing date: 2012-04-09
Publication date: 2012-12-05
Anticipated expiration: 2022-04-09

Abstract

The utility model discloses a dual-air-gap-structure dual-push magnetic force device which comprises a cylindrical shell, coils, two moving iron cores with mandrels, two static iron cores and shock absorption pads, wherein the coils are of annular structures; the coils are two and are respectively embedded in the cylindrical shell on the left and right sides; the two moving iron cores are slidingly arranged in the cylindrical shell and respectively penetrate through the rings of the two coils; the static iron cores are arranged at two ends of the cylindrical shell; and the mandrels of the two moving iron cores respectively penetrate through the two static iron cores. The dual-air-gap-structure dual-push magnetic force device is characterized in that the mandrel parts of the inner side surfaces of the static iron cores are provided with annular bosses, and the outer side end surfaces of the moving iron cores corresponding to the annular bosses are provided with annular counter bores; or the outer side end surface mandrel parts of the moving iron cores are provided with annular bosses; the inner side end surfaces corresponding to the annular bosses are provided with annular counter bores; and the shock absorption pads are arranged between the annular counter bore end surfaces and the annular boss end surfaces. Compared with the prior art, the dual-air-gap-structure dual-push magnetic force device provided by the utility model has the advantages of good shock absorption effect and great push force.

Description

Two gap structure double-push magnetic devices

Technical field

The utility model relates to a kind of magnetic force device of brake, is meant the double-push magnetic device especially.

Background technology

Existing double-push magnetic device is as shown in Figure 1, in drum shape housing, is provided with coil, and the coil middle part is provided with moving iron core and static iron core, when coil leads to state; Moving iron core and static iron core adjacent face are flat surface, i.e. the gap of two planes formation is a smooth air-gap, when coil electricity, can produce air-gap field between moving iron core and the static iron core air-gap; Static iron core can attract moving iron core to move, because moving iron core and static iron core are permeability magnetic material, static iron core can produce the metal strike note when attracting moving iron core to move, in order to eliminate this impact noise; Usually between moving iron core and static iron core, be provided with cushion blocking, when coil electricity, moving iron core at first contacts cushion blocking; Cushion blocking is compressed to certain thickness can not bump against iron core and static iron core, and the problem that this structure exists is: if cushion blocking is too thick, and excesssive gap between moving iron core and the static iron core; Air-gap field weakens between the air-gap, and electromagnetic force descends between the sound iron core, may cause brake to open; If cushion blocking is too thin, the cushioning effect that plays is limited, and moving iron core has very big acceleration near cushion blocking the time; Thin cushion blocking also damages easily, and its life-span is reduced, and noise occurs.

Summary of the invention

The purpose of the utility model is: to the deficiency of existing magnetic force device, a kind of noise of proposition is low, and the cushion blocking life-span is long, the magnetic force device structure that thrust is big.

The purpose of the utility model is achieved in that and comprises that tubular shell, coil, two have the moving iron core of axle, two static iron cores, cushion blocking; Coil is a loop configuration; Coil have two and respectively about be embedded in the tubular shell; Two moving iron cores are slidingly arranged in the tubular shell and are through respectively in the ring of two coils, and static iron core is arranged on the tubular shell two ends, and the axle of two moving iron cores passes respectively outside two static iron cores; Its special feature is that static iron core inner side end shaft core position is provided with annular boss, and the moving iron core outside end face of corresponding annular boss is provided with annular counterbore; Perhaps moving iron core outboard end over glaze heart 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, the solenoid energising, moving iron core and static iron core can form two air-gap fields, and 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 iron core stressed mobile; Vibration damping is lined with certain thickness, can realize the buffering distortion, and certain anti-pressure ability is arranged; Can guarantee can not damage under pressure, so buffer shock-absorbing is effective, the life-span is long.On the other hand; Moving iron core end face and static iron core end clearance be not owing to receive the influence of beam; So can design smallerly, the magnetic in gap is close big, adds the gap and is in the step outside; The area that forms air-gap field is big; Can know according to magnetic pull formula (B-air gap flux density, S-air gap surface area,

Figure 2012201453433100002DEST_PATH_IMAGE002

-air-gap magnetic capacity); This air gap can form bigger magnetic force; And counterbore end face and raised head face gap are bigger, and area is little, even air gap flux density is low; Influence to magnetic force device thrust is also less; So two gap structures had both guaranteed bigger magnetic thrust, had realized the buffering noise abatement again.

For the noise abatement of better realization buffering; Between counterbore end face and round platform end face, establish two cushion blockings, one is that hardness is big, thin thickness, and another hardness is little, thickness is big, the big soft cushion blocking of decrement; Like this, can guarantee better that gap between counterbore end face and the raised head face is in control range.

The utility model compared with present technology, its beneficial effect is:

Good damping result, thrust is big.

Description of drawings:

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

Fig. 2 is the structural representation of the utility model embodiment 1;

Fig. 3 is the part explosive view of the utility model;

Fig. 4 is the structural representation of the utility model embodiment 2;

Figure number explanation: moving 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, moving iron core, the outside end face 1b of moving iron core, the annular boss 1c of moving iron core, the annular counterbore 7c of static iron core.

Embodiment 1: like Fig. 2, shown in 3; The utility model comprises that tubular shell 6, coil 5, two have the moving iron core 1 of axle 3, two static iron cores 7, cushion blocking; Coil 5 is a loop configuration; Coil 5 have two and respectively about be embedded in the tubular shell 6, two moving iron cores 1 are slidingly arranged in the tubular shell 6 and are through respectively in the ring of two coils 5, static iron core 7 is arranged on tubular shell 6 two ends; The axle 3 of two moving iron cores 1 passes respectively outside two static iron cores 7; Its special feature is that static iron core 7 inner side end 7b shaft core positions are provided with annular boss 7a, and moving iron core 1 outside end face 1b of corresponding annular boss 7a is provided with annular counterbore 1a, is provided with beam between annular counterbore 1a end face and annular boss 7a end face.

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

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

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

Claims

1. two gap structure double-push magnetic devices; Comprise that tubular shell, coil, two have the moving iron core of axle, two static iron cores, cushion blocking; Coil is a loop configuration, coil have two and respectively about be embedded in the tubular shell, two moving iron cores are slidingly arranged in the tubular shell and are through respectively in the ring of two coils; Static iron core is arranged on the tubular shell two ends; The axle of two moving iron cores passes respectively outside two static iron cores, it is characterized in that static iron core inner side end shaft core position is provided with annular boss, and the moving iron core outside end face of corresponding annular boss is provided with annular counterbore; Perhaps moving iron core outboard end over glaze heart 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.

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, establishing two cushion blockings; One be that hardness is big, thin thickness, the little hard cushion blocking of decrement, another hardness is little, thickness is big, the big soft cushion blocking of decrement.