CN209016916U - A kind of improved voice coil motor structure - Google Patents

Abstract

The utility model discloses a kind of improved voice coil motor structures, the center of the hood inner roof wall is fixedly connected sequentially has magnet from top to bottom, iron core and magnet, bracket is provided on the outside of the hood, the middle position of the bracket front end face and rear end face has been bolted connecting plate, it is bonded on the downside of the rack inner wall and plays film circle, the inner ring for playing film circle is bonded with coil, the lower end of the coil is fixedly connected with bloom-base, the center of the bloom-base lower end surface is fixedly connected with pillar, the lower end of the pillar is provided with contact head, cooling mechanism is symmetrically arranged at left and right sides of the bloom-base, the utility model not only guarantees to transmit the precision of power, and good heat dissipation effect.

Description

A kind of improved voice coil motor structure

Technical field

The utility model relates to voice coil motor manufacturing technology field, in particular to a kind of improved voice coil motor structure.

Background technique

With Ultra-precision Turning and measurement, the continuous improvement of nanometer technique, external environment interference vibration and equipment itself The vibration of generation all drastically influences the technology acuracy and service life of precision equipment.Need thus provide match therewith every Vibrating device guarantees the normal use of precision equipment, while more stringent requirements are proposed to the anti-vibration performance in relation to isolation mounting. The characteristics of current voice coil motor is due to its high speed linear reciprocating motion, is mainly suitable for the Close loop servo control system for short stroke System, existing voice coil motor mainly using installation guide rail move coil along guide rail, ensure that transmitting power precision, but its Vibration itself is easy to appear externally transmitting and cannot be effectively isolated, affect the technology acuracy of precision equipment and make to external vibration Use the service life；Meanwhile existing voice coil motor heat dissipation effect is poor, continuous work can make the component inside voice coil motor, and deformation occurs, Influence precision and service life.

Utility model content

The technical problem to be solved by the present invention is to provide a kind of improved voice coil motor structures, not only guarantee that transmitting is dynamic The precision of power, and good heat dissipation effect.

A kind of improved voice coil motor structure, including hood, the hood are recess shape, the center of the hood inner roof wall Position is fixedly connected sequentially from top to bottom magnet, iron core and magnet, and the side wall of the iron core and magnet is and in the hood Wall is provided with bracket there are gap on the outside of the hood, the bracket is ring flange, the inner sidewall of the bracket and the branch The lateral wall clearance fit of frame, the bracket is connected by bolt with the hood, in the bracket front end face and rear end face Between position be bolted connecting plate, be bonded on the downside of the rack inner wall play film circle, it is described play film circle outer ring be Supporting plane and inner ring are corrugated, and the inner ring for playing film circle is bonded with coil, and the coil is set in the iron core and magnetic On the outside of iron, there are in gap and lateral wall and the hood with the lateral wall of the iron core and magnet for the inner sidewall of the coil For wall there are gap, the lower end of the coil is fixedly connected with bloom-base, and the center of the bloom-base lower end surface is fixedly connected There is pillar, the lower end of the pillar is provided with contact head, and cooling mechanism is symmetrically arranged at left and right sides of the bloom-base, described Cooling mechanism includes gear, rack gear, shaft and flabellum, and the shaft is rotatably connected between connecting plate described in the same side, described The both ends of shaft are corresponding to run through the connecting plate, and the flabellum uniform welding is on the side wall of the roller end, the gear It is fixed at the middle position of the shaft, the rack gear is respectively fixedly disposed at left side and the right end of the bloom-base Face, the rack gear are engaged with the corresponding gear.

Preferably, it is provided with rubber ring inside and outside the coil lower end, the lower end surface of the rubber ring is bonded in There are gaps on the bloom-base and between side wall and the coil side wall.

Preferably, the contact head is semicircle spherical shape or taper.

Preferably, bearing, the side wall interference of the inner ring of the bearing and the shaft are provided on the downside of the connecting plate Cooperation.

Preferably, the horizontal distance of the coil lateral wall and the hood inner sidewall is 0.8cm~1.2cm.

The utility model has the beneficial effects that

The utility model in view of the drawbacks of the prior art, is provided with and plays film circle, coil is connected with bracket, so that coil is not With additional installation guide rail, compliant mechanism is converted by rigid mechanism, efficiently avoids the external transmitting of itself vibration；Exist simultaneously Coil lateral wall and hood inner sidewall prevent coil shaking from coil being caused to run into magnet, extend service life；In addition, setting There is cooling mechanism, when being in work, bloom-base follows coil to move up and down, and drives rack and pinion movement, makes shaft driving fan Leaf is finally reached the speed for accelerating the flowing of voice coil motor inner air, reinforces heat dissipation effect；The utility model not only guarantees to transmit The precision of power, and good heat dissipation effect.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model embodiment.

In figure, 1- hood；2- magnet；3- iron core；4- coil；5- bracket；51- connecting plate；6- cooling mechanism；61- gear； 62- rack gear；63- shaft；64- flabellum；7- bloom-base；71- rubber ring；8- pillar；9- contact head；10- bullet film circle.

Specific embodiment

Specific embodiment of the present utility model is described further with reference to the accompanying drawing.It should be noted that The explanation of these embodiments is used to help to understand the utility model, but does not constitute the restriction to the utility model.This Outside, technical characteristic involved in the various embodiments of the present invention described below is as long as they do not conflict with each other It can be combined with each other.

As shown in Figure 1, a kind of improved voice coil motor structure, including hood 1, the hood 1 are recess shape, the hood The center of 1 inner roof wall is fixedly connected sequentially from top to bottom magnet 2, iron core 3 and magnet 2, the iron core 3 and magnet 2 For side wall with 1 inner wall of hood there are gap, the outside of the hood 1 is provided with bracket 5, and the bracket 5 is ring flange, institute The inner sidewall of bracket 5 and the lateral wall clearance fit of the bracket 5 are stated, the bracket 5 is connected by bolt with the hood 1, The middle position of 5 front end face of bracket and rear end face has been bolted connecting plate 51, and the downside of 5 inner wall of bracket is viscous It is connected to and plays film circle 10, the outer ring for playing film circle 10 is supporting plane and inner ring is corrugated, and the inner ring for playing film circle 10 is viscous Be connected to coil 4, the coil 4 be set in 2 outside of the iron core 3 and magnet, the inner sidewall of the coil 4 and the iron core 3 and The lateral wall of magnet 2 is there are gap and lateral wall and 1 inner wall of hood are there are gap, and the lower end of the coil 4 is fixedly connected There is bloom-base 7, the center of 7 lower end surface of bloom-base is fixedly connected with pillar 8, and the lower end of the pillar 8, which is provided with, to be connect Contact 9, the left and right sides of the bloom-base 7 are symmetrically arranged with cooling mechanism 6, and the cooling mechanism 6 includes gear 61, rack gear 62, shaft 63 and flabellum 64, the shaft 63 are rotatably connected between connecting plate 51 described in the same side, the both ends of the shaft 63 Corresponding to run through the connecting plate 53, for 64 uniform welding of flabellum on the side wall of 63 end of shaft, the gear 61 is solid The middle position of the shaft 63 is set calmly, and the rack gear 62 is respectively fixedly disposed at the left side and the right side of the bloom-base 7 End face, the rack gear 62 are engaged with the corresponding gear 61.

The utility model in view of the drawbacks of the prior art, is provided with and plays film circle 10, coil 4 is connected with bracket 5, so that line Circle 4 does not have to additional installation guide rail, converts compliant mechanism for rigid mechanism, efficiently avoids the external transmitting of itself vibration； Simultaneously in 4 lateral wall of coil and 1 inner sidewall of hood, prevents the shaking of coil 4 from coil 4 being caused to run into magnet 2, extend using the longevity Life；In addition, being provided with cooling mechanism 6, when being in work, bloom-base 7 follows coil 4 to move up and down, band carry-over bar 62 and gear 61 movements, make shaft 63 drive flabellum 64, are finally reached the speed for accelerating the flowing of voice coil motor inner air, reinforce heat dissipation effect Fruit；The utility model not only guarantees to transmit the precision of power, but also good heat dissipation effect.

Further, rubber ring 71, the lower end surface of the rubber ring 71 are provided with inside and outside 4 lower end of coil It is bonded on the bloom-base 7 and there are gap between 4 side wall of side wall and the coil, prevent coil 4 from shaking too big, damage Gear 61 and rack gear 62.

Further, the contact head 9 is semicircle spherical shape or taper.

Further, the downside of the connecting plate 51 is provided with bearing, the side of the inner ring of the bearing and the shaft 63 Wall interference fit, reduces frictional force and energy consumption.

Further, the horizontal distance of 4 lateral wall of coil and 1 inner sidewall of hood is 0.8cm~1.2cm, is protected Safety clearance is held, 1 inner sidewall of hood is collided when preventing coil 4 from shaking.

Working principle of the utility model is:

When the utility model is used, the access control electric current of coil 4 is given, since magnet 2 passes through 1 shape of iron core 3 and hood At magnetic loop, according to Ampere force principle, after effect of the coil 4 by magnetic field in hood 1 and 2 gap of magnet, coil 4 is produced Raw power in the axial direction, is then passed the power by bracket 5, pillar 8, contact head 9, and control sense of current determines The direction of motion of coil 4, before use process, the vibration that coil 4 generates is weakened by playing film circle 10 and absorbing, and avoids itself vibration Dynamic external transmitting；Bloom-base 7 follows coil 4 to move up and down, and band carry-over bar 62 and gear 61 move, and shaft 63 is made to drive flabellum 64。

The embodiments of the present invention is explained in detail in conjunction with attached drawing above, but the utility model is not limited to be retouched The embodiment stated.For a person skilled in the art, right in the case where not departing from the utility model principle and spirit These embodiments carry out a variety of change, modification, replacement and modification, still fall in the protection scope of the utility model.

Claims (5)

1. a kind of improved voice coil motor structure, including hood (1), it is characterised in that: the hood (1) is recess shape, described The center of hood (1) inner roof wall is fixedly connected sequentially from top to bottom magnet (2), iron core (3) and magnet (2), the iron The side wall of core (3) and magnet (2) is provided with bracket on the outside of the hood (1) with the hood (1) inner wall there are gap (5), the bracket (5) is ring flange, and the inner sidewall and the lateral wall clearance fit of the bracket (5) of the bracket (5) are described Bracket (5) is connected by bolt with the hood (1), and the middle position of bracket (5) front end face and rear end face passes through bolt It is fixed with connecting plate (51), is bonded on the downside of bracket (5) inner wall and plays film circle (10), the outer ring for playing film circle (10) is Supporting plane and inner ring are corrugated, and the inner ring for playing film circle (10) is bonded with coil (4), and the coil (4) is set in institute State on the outside of iron core (3) and magnet (2), the lateral wall of the inner sidewall of the coil (4) and the iron core (3) and magnet (2) there are There are gap, the lower end of the coil (4) is fixedly connected with bloom-base (7) for gap and lateral wall and the hood (1) inner wall, The center of bloom-base (7) lower end surface is fixedly connected with pillar (8), and the lower end of the pillar (8) is provided with contact head (9), be symmetrically arranged with cooling mechanism (6) at left and right sides of the bloom-base (7), the cooling mechanism (6) include gear (61), Rack gear (62), shaft (63) and flabellum (64), the shaft (63) are rotatably connected between connecting plate described in the same side (51), institute The both ends for stating shaft (63) are corresponding through the connecting plate (51), and flabellum (64) uniform welding is in the shaft (63) end Side wall on, the gear (61) is fixed at the middle position of the shaft (63), and fixation is set the rack gear (62) respectively It sets in the left side and right side of the bloom-base (7), the rack gear (62) is engaged with the corresponding gear (61).

2. a kind of improved voice coil motor structure according to claim 1, it is characterised in that: coil (4) lower end Inside and outside be provided with rubber ring (71), the lower end surface of the rubber ring (71) is bonded on the bloom-base (7) and side wall There are gaps between the coil (4) side wall.

3. a kind of improved voice coil motor structure according to claim 1, it is characterised in that: the contact head (9) is half Spheroidal or taper.

4. a kind of improved voice coil motor structure according to claim 1, it is characterised in that: under the connecting plate (51) Side is provided with bearing, the side wall interference fit of the inner ring of the bearing and the shaft (63).

5. a kind of improved voice coil motor structure according to claim 1, it is characterised in that: coil (4) lateral wall Horizontal distance with the hood (1) inner sidewall is 0.8cm~1.2cm.