CN208548246U - A kind of noise reducing type high frequency transformer - Google Patents

Abstract

The utility model discloses a kind of noise reducing type high frequency transformers, it is related to field transformer, its drip irrigation device includes wrapping post, perforative magnetic core hole is offered on the wrapping post, it is fixedly installed limit plate respectively on the outside of the wrapping post and along the both ends in magnetic core hole direction, side that the limit plate is located remotely from each other and it is located at magnetic core hole side and is fixedly installed mounting plate, on the mounting plate and a side in separate magnetic core hole is fixedly installed stitch, it further include the iron core being plugged in magnetic core hole, and it is wound on primary coil and secondary coil in two winding slots；Rubber layer and sound absorbing layer are provided between the magnetic core and magnetic core hole.Can vibration to magnetic core from sound source and propagate road strength both direction and weaken so that the noise of integral sensors is smaller.

Description

A kind of noise reducing type high frequency transformer

Technical field

The utility model relates to a kind of transformer, more particularly to a kind of noise reducing type high frequency transformer.

Background technique

Transformer is the device for changing alternating voltage using the principle of electromagnetic induction, and main member is primary coil, secondary Grade coil and iron core (magnetic core).Major function has: voltage transformation, current transformation, impedance transformation, isolation, pressure stabilizing (magnetic saturation transformation Device) etc..Existing transformer, it will usually be provided with transformer framework, the grafting iron core in transformer framework, winding is first on the outside Grade coil and secondary coil.

The existing Chinese Authorization Notice No. that can refer to is the Chinese utility model patent of CN202905417U, it discloses A kind of transformer framework, technical points include a kind of transformer framework, including between top layer, bottom, top layer and bottom around Wire casing, is set to the outer peripheral stitch in bottom two sides and is set under bottom longitudinal magnetic core slot through between top layer and bottom Surface and the insulation barricade for being located at magnetic core slot two sides, the distance from secondary stitch to the first ipsilateral insulation stop side within the walls are 4.5-7.5mm；The lower end of the first insulation barricade passes through PCB plate and is fixedly connected with PCB plate.

The transformer of transformer framework installation, is plugged with magnetic core, in actual use, in operation in magnetic core slot Transformer can generate noise, and there are two the noise of transformer itself is main, first is that iron core, second is that winding, i.e., unloaded, load causes The sum of noise.And the vibration of coil, tank wall caused by the leakage porcelain that load current generates is than iron core caused by silicon steel sheet magnetostriction It vibrates much smaller, can ignore.This is to say the vibration of transformer body depends entirely on the vibration of iron core.One kind is now provided Noise reducing type high frequency transformer.

Utility model content

In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of noise reducing type high frequency transformer, Can vibration to magnetic core from sound source and propagate road strength both direction and weaken so that the noise of integral sensors compared with It is small.

To achieve the above object, the utility model provides following technical solution:

A kind of noise reducing type high frequency transformer, including wrapping post, offer perforative magnetic core hole on the wrapping post, it is described around It is fixedly installed limit plate respectively on the outside of terminal and along the both ends in magnetic core hole direction, the side and position that the limit plate is located remotely from each other It is fixedly installed mounting plate in magnetic core hole side, on the mounting plate and a side in separate magnetic core hole is fixedly installed There is stitch, further includes the iron core being plugged in magnetic core hole and the primary coil and secondary coil that are wound in two winding slots；? Rubber layer and sound absorbing layer are provided between the magnetic core and magnetic core hole.

By using above-mentioned technical proposal, magnetic core is flexibly supported by rubber layer so that magnetic core and magnetic core hole it Between Elastic Contact.More effectively prevent the noise that sending is collided between magnetic core and wrapping post.Meanwhile by sound absorbing layer to magnetic The noise that core itself vibrates sending is absorbed, so that the noise issued on the whole to magnetic core absorbs.

Preferably, the rubber layer with a thickness of 0.2-0.5mm.

Preferably, the rubber layer includes being fixed on first rubber layer and the second rubber layer at magnetic core hole both ends, described Sound absorbing layer is folded between first rubber layer and the second rubber layer.

By using above-mentioned technical proposal, by the way that rubber layer is arranged at both ends, setting sound absorbing layer in centre reduces on the whole Thickness between rubber layer and sound absorbing layer, meanwhile, the rubber layer at both ends protects sound absorbing layer.

Preferably, be fixedly installed between two limit plates every battery plate, on the wrapping post and be located at it is described every Be fixedly installed insulated column between battery plate and limit plate respectively, the side wall of the vertical wrapping post of the insulated column, and it is described every It is distributed with from column along the side wall of wrapping post several, the plane that several wrapping posts are formed is parallel described every battery plate；Several coilings Winding slot is formed between column and limit plate.

By using above-mentioned technical proposal, by the insulated column being arranged on wrapping post, by primary coil and secondary coil It is wrapped on winding slot, stays in insulated column and between battery plate the gap set, for increasing connecing for air between coil and the external world Contacting surface product, thus, it radiates to coil.At the same time, the interval between insulated column can enable coil preferably into Row heat dissipation.At the same time, there are pressure differences between primary coil and secondary coil more effectively prevents by setting every battery plate The creepage distance of primary coil and secondary coil, so that pressure voltage between the two is larger, use is safer.

Preferably, the insulated column and it is described every the distance between battery plate be less than between the insulated column and limit plate away from From.

By using above-mentioned technical proposal, by the way that by insulated column and every the smaller of the distance between battery plate setting, cooperation is outer The cooling system on boundary can also reach preferable heat dissipation effect, meanwhile, setting in this way can make the space in winding slot larger, To which the circle number of coil can be with relative increase.

Preferably, described every being provided with several fins on battery plate, the length direction of the fin wrapping post in parallel Side wall.

By using above-mentioned technical proposal, when there is larger pressure difference between primary coil and secondary coil, electric current can be along The lesser place of resistance value is crawled along skeleton surface, by being arranged in every the fin on battery plate, increases primary line Creepage distance between circle and secondary coil, so that the pressure difference between primary coil and secondary coil can be obtained further Increase, thus, under conditions of same pressure differential, the transformer framework when in use, be more not easy it is breakdown, thus, use Shi Gengjia safety.

Preferably, the limit plate offers wire lead slot in one end close to stitch and close to the side of winding slot.

By using above-mentioned technical proposal, by the wire lead slot opened up, in wound around coil, terminal by wire lead slot with Stitch connection.

Preferably, the length direction of the wire lead slot stitch in parallel, and to be located at the wrapping post wide for the wire lead slot Spend the two sides in direction.

It is convenient to line by the two sides for the wrapping post width direction that wire lead slot is arranged by using above-mentioned technical proposal Circle connector carries out connecing extraction.

Preferably, being fixedly installed locating convex block on the mounting plate and in a side of stitch.

By using above-mentioned technical proposal, by the locating convex block of setting, locating convex block is projected on mounting plate, is installing When, locating convex block is connected on pcb board, so that having certain interval between installation plate end face and pcb board, so that on stitch It is not contacted between terminal and pcb board, thus, the terminal on stitch is protected to a certain extent.

Preferably, on the limit plate and side far from the magnetic core hole is fixedly installed positioning plate, the positioning plate The two sides that magnetic core hole is relatively distant from are located at mounting plate, formation limits magnetic core between mounting plate and positioning plate Limiting slot.

By using above-mentioned technical proposal, magnetic core is allowed to slide limit when installing magnetic core by the limiting slot of setting Position is in limiting slot, so that convenient install magnetic core.

In conclusion the utility model has the following beneficial effects:

1, magnetic core is flexibly supported by rubber layer, so that Elastic Contact between magnetic core and magnetic core hole.More effectively Prevent the noise that sending is collided between magnetic core and wrapping post.Meanwhile sending is vibrated to magnetic core itself by sound absorbing layer and is made an uproar Sound is absorbed, so that the noise issued on the whole to magnetic core absorbs；

2, by the way that rubber layer is arranged at both ends, setting sound absorbing layer in centre reduces between rubber layer and sound absorbing layer on the whole Thickness, meanwhile, the rubber layer at both ends protects sound absorbing layer；

3, by the insulated column being arranged on wrapping post, primary coil and secondary coil are wrapped on winding slot, every Stay from column and between battery plate the gap set, for increasing the contact area of air between coil and the external world, thus, to coil into Row heat dissipation.At the same time, the interval between insulated column can enable coil preferably to radiate.At the same time, primary There are pressure differences between coil and secondary coil relatively effectively prevents primary coil and secondary coil by setting every battery plate Creepage distance so that pressure voltage between the two is larger, use is safer.

Detailed description of the invention

Fig. 1 is a kind of overall structure diagram of prominent transformer framework in noise reducing type high frequency transformer；

Fig. 2 is a kind of overall structure diagram of noise reducing type high frequency transformer；

Fig. 3 is a kind of schematic diagram of prominent limiting slot in noise reducing type high frequency transformer；

Fig. 4 is the structural schematic diagram of prominent magnetic core and sound absorbing layer in a kind of noise reducing type high frequency transformer.

Appended drawing reference: 1, wrapping post；11, magnetic core hole；2, limit plate；21, mounting plate；211, wire lead slot；212, convex Block；22, positioning plate；23, limiting slot；3, stitch；4, every battery plate；41, fin；5, insulated column；6, winding slot；7, magnetic core；71, rubber Glue-line；72, sound absorbing layer；8, primary coil；9, secondary coil.

Specific embodiment

The utility model is described in further detail below in conjunction with attached drawing, wherein the identical attached drawing of identical components Label indicates.It should be noted that word "front", "rear" used in the following description, "left", "right", "up" and "down", " bottom Face " and " top surface " refer to that the direction in attached drawing, word "inner" and "outside" are referred respectively to towards or away from particular elements geometry The direction at center.

A kind of noise reducing type high frequency transformer as depicted in figs. 1 and 2, including wrapping post 1 and is fixed on the outside of wrapping post 1 Limit plate 2, the magnetic core 7 that is plugged in magnetic core hole 11, limit plate 2 is on wrapping post 1 and is located at the both ends in magnetic core hole 11 and distinguishes It is fixedly installed one piece, wound around coil is used between two pieces of limit plates 2.It is provided with stitch 3 on limit plate 2, passes through stitch 3 Connect lead circle.

In conjunction with shown in Fig. 1 and Fig. 3, the rectangular in cross-section of wrapping post 1, inside the magnetic core hole 11 that opens up in rectangle, limiting The one end in position plate 2 and separate magnetic core hole 11 is fixedly installed mounting plate 21, and mounting plate 21 is fixed on two limit plates 2 and is located remotely from each other Side, stitch 3 is fixed on mounting plate 21, and stitch 3 is located at the one end of mounting plate 21 far from magnetic core hole 11, passes through stitch 3 It carries out connecing electricity.

Further, it is connect in order to facilitate coil with stitch 3, offers lead in two limit plates 2 side close to each other Slot 211, the position of wire lead slot 211 is in close to the position of stitch 3, and one end forms through slot in 2 upper end of limit plate, and the other end leans on Nearly wrapping post 1, and the wire lead slot 211 on same limit plate 2 is in the two sides of 1 width direction of wrapping post, can be with by coil Conveniently enter wire lead slot 211 to be attached with stitch 3.

Meanwhile on mounting plate 21 and be located at connection stitch 3 an end face be fixedly installed locating convex block 212, by its It when being fixed on pcb board, can be abutted with pcb board by locating convex block 212, to be connect to the coil connected on stitch 3 Head is protected.

It is fixed with positioning plate 22 in the side that limit plate 2 is located remotely from each other, positioning plate 22 and mounting plate 21 are located at magnetic core The two sides in hole 11 form the limiting slot 23 limited to magnetic core 7, positioning plate 22 and peace between positioning plate 22 and mounting plate 21 Loading board 21 is close to magnetic core hole 11, to obtain side concordant with magnetic core hole 11.Thus during magnetic core 7 are installed, 23 energy of limiting slot Enough preferably to limit to magnetic core 7, when installation, is more convenient.

Be fixedly installed between two pieces of limit plates 2 every battery plate 4, wherein every battery plate 4 in parallel with limit plate 2.Coil includes Primary coil 8 and secondary coil 9 wind primary coil 8 and secondary coil 9 in the two sides every battery plate 4, by every battery plate 4 respectively Increase the creepage distance between primary coil 8 and secondary coil 9, thus, add so that having between primary coil 8 and secondary coil 9 Big pressure voltage.

Every 4 two sides of battery plate and it is being located at and is fixedly installed insulated column 5 between battery plate 4 and limit plate 2, and insulated column 5 hangs down The side wall of straight wrapping post 1, the side wall of 5 wrapping post 1 of insulated column be uniformly distributed it is several, so that the plane that several insulated columns 5 are formed is flat Row is formed between insulated column 5 and limit plate 2 to the winding slot 6 for coiling with every battery plate 4.Pass through 6 pairs of winding slot primary lines Circle 8 or secondary coil 9 are wound.By the wrapping post 1 of setting, so that the better heat-radiation effect of the coil in winding slot 6.

When design, insulated column 5 and the width between battery plate 4 are less than the width between insulated column 5 and limit plate 2, meanwhile, Every being fixedly installed several fins 41 on battery plate 4, the length direction of fin 41 in parallel with wrapping post 1 where plane.Pass through Every fixing fin 41 on battery plate 4, the width of winding slot 6 is increased, to increase the quantity of wound around coil.And then it increases Pressure difference, meanwhile, by setting every the fin 41 on battery plate 4, increase the creepage distance every 4 liang of lateral coils of battery plate.So that The skeleton when in use, while possessing preferable heat dissipation effect so that be not easy between two winding slots 6 it is breakdown, thus There is preferable pressure voltage.

In conjunction with shown in Fig. 2 and Fig. 4, further, in order to reduce the noise of entire transformer, in 7 outside of magnetic core and it is located at Magnetic core hole 11(such as Fig. 1) in be provided with rubber layer 71 and sound absorbing layer 72.

Wherein, the both ends of magnetic core 7, including the first rubber layer 711 and the second rubber layer 712, rubber is arranged in rubber layer 71 Layer 71 with a thickness of 0.2-0.5mm.It is flexibly supported by both ends of the rubber layer 71 to magnetic core 7, so that magnetic core 7 and magnetic core hole Elastic Contact between 11 more effectively prevents the noise that sending is collided between magnetic core 7 and wrapping post 1, to making an uproar from sound source Sound is weakened.Sound absorbing layer 72 is arranged between the first rubber layer 711 and the second rubber layer 712, by rubber layer 71 to sound-absorbing Layer 72 carries out position limitation protection, meanwhile, it is absorbed by the noise that sound absorbing layer 72 issues magnetic core 7 vibration itself, thus from biography The noise for issuing magnetic core 7 in the strength of road is broadcast to absorb.

This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability Field technique personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but As long as all by the protection of Patent Law in the scope of the claims of the utility model.

Claims (10)

1. a kind of noise reducing type high frequency transformer, including wrapping post (1), perforative magnetic core hole is offered on the wrapping post (1) (11), it is fixedly installed limit plate (2), the limit respectively on the outside of the wrapping post (1) and along the both ends in magnetic core hole (11) direction Position plate (2) side that is located remotely from each other and it is located at magnetic core hole (11) side and is fixedly installed mounting plate (21), in the installation On plate (21) and a side in separate magnetic core hole (11) is fixedly installed stitch (3), further includes being plugged in magnetic core hole (11) Iron core and the primary coil (8) and secondary coil (9) that are wound in two winding slots (6)；It is characterized by: in the magnetic Rubber layer (71) and sound absorbing layer (72) are provided between core (7) and magnetic core hole (11).

2. noise reducing type high frequency transformer according to claim 1, it is characterized in that: the rubber layer (71) with a thickness of 0.2- 0.5mm。

3. noise reducing type high frequency transformer according to claim 1, it is characterized in that: the rubber layer (71) includes being fixed on magnetic First rubber layer (711) and the second rubber layer (712) at core bore (11) both ends, in first rubber layer (711) and the second rubber Sound absorbing layer (72) are folded between glue-line (712).

4. noise reducing type high frequency transformer according to claim 1-3, it is characterized in that: in two limit plates (2) Between be fixedly installed every battery plate (4), on the wrapping post (1) and be located at and described divide between battery plate (4) and limit plate (2) It is not fixedly installed insulated column (5), the side wall of the vertical wrapping post (1) of the insulated column (5), and the insulated column (5) edge The side wall of wrapping post (1) is distributed with several, and the plane that several wrapping posts (1) are formed is parallel described every battery plate (4)；It is described it is several around Winding slot (6) are formed between terminal (1) and limit plate (2).

5. noise reducing type high frequency transformer according to claim 4, it is characterized in that: the insulated column (5) and described every battery plate The distance between (4) it is less than the distance between the insulated column (5) and limit plate (2).

6. noise reducing type high frequency transformer according to claim 4, it is characterized in that: described several every being provided on battery plate (4) Fin (41), the side wall of the length direction of the fin (41) wrapping post (1) in parallel.

7. noise reducing type high frequency transformer according to claim 4, it is characterized in that: the limit plate (2) is close to stitch (3) One end and offer wire lead slot (211) close to the side of winding slot (6).

8. noise reducing type high frequency transformer according to claim 7, it is characterized in that: the length direction of the wire lead slot (211) The parallel stitch (3), and the wire lead slot (211) is located at the two sides of the wrapping post (1) width direction.

9. noise reducing type high frequency transformer according to claim 4, it is characterized in that: on the mounting plate (21) and close to stitch (3) locating convex block (212) are fixedly installed in a side.

10. noise reducing type high frequency transformer according to claim 4, it is characterized in that: on the limit plate (2) and far from described The side in magnetic core hole (11) is fixedly installed positioning plate (22), and the positioning plate (22) and mounting plate (21) are located at magnetic core hole (11) two sides being relatively distant from form the limiting slot limited to magnetic core (7) between mounting plate (21) and positioning plate (22) (23).