CN101478219B - Micro electromagnetic vibrator - Google Patents

Abstract

A miniature electromagnetic vibrator comprises a coil arranged in a quadrate housing, a linear iron core, an anti-collision mat, magnetic steel, a vibration body and a jettison device. The linear iron core, the anti-collision mat and the magnetic steel are arranged in the internal of the vibration body, two end surfaces of the linear iron core are respectively connected with the anti-collision mat and is just opposite to one surface of the magnetic steel, and the other surface of the magnetic steel is embedded in the vibration body; one or a plurality of the linear iron cores is/ are provided, the coil is wound on the iron core, a lead is led out from the two ends of the coil to be connected with an external power supply, the quadrate housing is basically filed with the vibration body, and the vibration body is connected with the housing through the jettison device. The miniature linear vibrator has the advantages of simple structure, light weight, low manufacturing and material costs, long service life, and no spark and electromagnetic interference.

Description

Micro electromagnetic vibrator

Technical field

The present invention relates to a kind of electromagnetic shaker, relate to a kind of micro electromagnetic vibrator that is used for mobile phone, game machine or electric massage utensil etc. specifically.

Background technology

Need to use miniature electromagnetic shaker in the mobile phone, it is as noiseless signal source element; Also have some other need use miniature electromagnetic shaker the field as game machine, electric massage utensil etc.The miniature electromagnetic shaker that uses all is miniature vibrating motor usually at present, miniature vibrating motor is columniform or pancakely all to be made up of motor and eccentrically mounted weight piece, rotation by motor drives the rotation of eccentrically mounted weight piece, thereby produce vibrations, and these d.c. motors generally have bearing, brush and commutator, the tungsten alloy eccentric wheel, be with eccentric rotor in uneven rotation at a high speed, it is to bearing, and the material of brush and commutator is had relatively high expectations, and the problem that has the motor maximum of brush and commutator is easy wearing and tearing, life-span is short, can produce the electromagnetic interference of commutation spark in addition.

Summary of the invention

Micro electromagnetic vibrator of the present invention is in order to overcome the defective on the prior art, provide a kind of simple in structure, feed consumption is few, in light weight, low cost of manufacture, long service life, and the micro electromagnetic vibrator of non-commutation spark and electromagnetic interference.

A kind of micro electromagnetic vibrator, constitute by the coil, in-line iron core, bumper, magnet steel, vibration body and the elastic device that are arranged in the square shell, described in-line iron core, bumper and magnet steel all are arranged on vibration body inside, the both ends of the surface of described in-line iron core connect described bumper respectively and over against the one side of described magnet steel, the another side of described magnet steel is embedded in the described vibration body; Described in-line iron core has one or more, is wound with coil on the iron core, and the two ends of coil are drawn lead and linked to each other with external power source, and described vibration body fills up square shell substantially, and vibration body links to each other with shell by elastic device.

Micro electromagnetic vibrator of the present invention, described in-line iron core can be one, volume is big slightly, is positioned at the bottom of described vibration body; Also can be positioned at the middle part of described vibration body; Also can be less two of volume, lay respectively at the upper and lower in the described vibration body; Also can be very little several of volume, be evenly distributed on the inside of vibration body, specifically can be provided with according to the required shaking force size of product.

Micro electromagnetic vibrator of the present invention, wherein said magnet steel can be embedded in the groove of vibration body by bonding way.

Micro electromagnetic vibrator of the present invention, wherein said elastic device can be the reed of the rhombus that lays respectively at the vibration body both sides, the projecting point on one side of described rhombus reed is connected the middle part of the side of described vibration body, and the projecting point of another side is connected with the inwall of described square shell.Can be curved reed for the cross section that lays respectively at the vibration body both sides also, the two ends up and down of described shaped form reed be connected with the side of vibration body respectively, and middle-end is connected with the inwall of described square shell.Perhaps for being packed in the porose silicon rubber body in the space between vibration body both sides and the square shell.It mainly plays shock transfer to the effect of shell, specifically can design according to aspects such as the big ting model of product and difficulty of processing, and numerous embodiments can be arranged.

Micro electromagnetic vibrator of the present invention, the connected mode of wherein mentioning can be bonding or conventional connected mode such as welding or riveted joint.

When micro electromagnetic vibrator of the present invention uses, by the double-end lead of coil, apply the alternating current of certain voltage and frequency to the two ends of coil, make in-line iron core two ends produce magnetic field, can produce thrust and pulling force that homopolar-repulsion and heteropole are inhaled mutually between the magnet steel on the other side, thereby under the effect in magnetic field, magnet steel drives vibration body and makes horizontal rectilinear motion by shown position, alternating current by different conversion, just can realize the commute motion of vibration body at left and right directions, the vibration body of motion is delivered to shell by elastic device with shaking force.When vibration body and elastic device and shell produce seismaesthesia maximum when shaking altogether.

Micro electromagnetic vibrator of the present invention has the following advantages and technique effect:

One. its feature controllability of micro electromagnetic vibrator of the present invention is good, when the coil two ends apply the alternating current of different voltages and frequency, when frequency and voltage etc. change, is easy to obtain multi-form seismaesthesia, to satisfy the different demands of various seismaesthesias.

Two. micro electromagnetic vibrator of the present invention, overcome the easy wearing and tearing that originally have brush and commutator motor, the life-span is short, produces the defectives such as electromagnetic interference of spark during commutation.

Three. micro electromagnetic vibrator of the present invention, simple in structure, in light weight, low cost of manufacture, the life-span is long, and nonarcing electromagnetic interference.

Four. micro electromagnetic vibrator of the present invention, because not decomposition of the power that magnetic field produces, so useful effect power maximum; And because the design of in-line iron core minimizes core volume, how the maximization of vibration body volume so just can use hyperbaric tungsten precious metal material with low-gravity iron, copper product less, has reached the purpose that reduces material cost.

Description of drawings

Fig. 1 is the schematic diagram of microelectromagnetic vibrator embodiment 1 of the present invention;

Fig. 2 is the stereogram of rhombus reed among Fig. 1;

Fig. 3 is the schematic diagram of microelectromagnetic vibrator embodiment 2 of the present invention;

Fig. 4 is the stereogram of shaped form reed among Fig. 3;

Fig. 5 is the schematic diagram of microelectromagnetic vibrator embodiment 3 of the present invention.

Embodiment

For further specifying micro electromagnetic vibrator of the present invention, specifically set forth with the following Examples:

Embodiment 1:

As shown in Figure 1, micro electromagnetic vibrator in the present embodiment, constitute by thecoil 1, in-line iron core 2,bumper 7,magnet steel 3,vibration body 4 and rhombus reed 5 (see figure 2)s that are arranged in thesquare shell 6, in-line iron core 2,bumper 7 andmagnet steel 3 all are arranged onvibration body 4 inside, the both ends of the surface of in-line iron core 2 connectbumper 7 respectively and over against the one side ofmagnet steel 3, the another side ofmagnet steel 3 is embedded in thevibration body 4; In-line iron core 2 has one, be positioned at the bottom ofvibration body 4, volume is big slightly, on be wound withcoil 1, the two ends ofcoil 1 are drawn lead and are linked to each other with external power source, andvibration body 4 fills upsquare shell 6 substantially, andvibration body 4 links to each other withshell 6 byrhombus reed 5, the projecting point on one side ofrhombus reed 5 is welded on the middle part of the side ofvibration body 4, the inwall welding of the projecting point of another side andsquare shell 6.

Square shell 6 has certain thickness, and it can be divided into two parts, wait above-mentioned parts to pack into after, again two parts welding or riveted joint are got up.

During use, by the double-end lead of coil, apply the alternating current of certain voltage and frequency to the two ends of coil, make in-line iron core two ends produce magnetic field, can produce thrust and pulling force that homopolar-repulsion and heteropole are inhaled mutually between the magnet steel on the other side, thereby under the effect in magnetic field, magnet steel drives vibration body and makes horizontal rectilinear motion by shown position, alternating current by different conversion, just can realize the commute motion of vibration body at left and right directions, the vibration body of motion is delivered to shell by elastic device rhombus reed with shaking force.When vibration body and elastic device rhombus reed and shell produce seismaesthesia maximum when shaking altogether.

Embodiment 2:

As shown in Figure 3, micro electromagnetic vibrator in the present embodiment, by thecoil 1 that is arranged on square shell 6 ' interior ', in-line iron core 2 ', bumper 7 ', magnet steel 3 ', vibration body 4 ' and shaped form reed 5 ' (see figure 4) constitute, in-line iron core 2 ', bumper 7 ' and magnet steel 3 ' all be arranged on vibration body 4 ' inside, in-line iron core 2 ' both ends of the surface connect respectively described bumper 7 ' and over against magnet steel 3 ' one side, magnet steel 3 ' another side be embedded in vibration body 4 ' in; In-line iron core 2 ' have two, lay respectively at vibration body 4 ' interior upper and lower, volume is slightly little, on be wound with two coils 1 ', two coils 1 ' two ends series connection (playing the end head links to each other) and draw by lead or wiring board, link to each other with external power source, vibration body 4 ' fill up substantially square shell 6 ', vibration body 4 ' by shaped form reed 5 ' with shell 6 ' link to each other, shaped form reed 5 ' two ends up and down respectively with vibration body 4 ' side welding, middle-end and square shell 6 ' inwall welding, vibration body 4 ' vibrations by shaped form reed 5 ', with shock transfer to shell.

Embodiment 3:

As shown in Figure 5, micro electromagnetic vibrator in the present embodiment, by being arranged onsquare shell 6 " incoil 1 ", in-line iron core 2 ",bumper 7 ",magnet steel 3 ",vibration body 4 " andsilicon rubber body 5 " constitute; in-line iron core 2 ",bumper 7 " andmagnet steel 3 " all are arranged onvibration body 4 " inside; in-line iron core 2 " both ends of the surface connect describedbumper 7 respectively " and over againstmagnet steel 3 " one side, in themagnet steel 3 " another side be embedded invibration body 4 "; The middle part that in-line iron core 2 " has one; be positioned atvibration body 4 ", volume is big slightly, on be wound withcoil 1 two ends of ";coil 1 " draw lead and link to each other with external power source,vibration body 4 " fills upsquare shell 6 " substantially,vibration body 4 " by being packed in the porosesilicon rubber body 5 in the space between vibration body both sides and the square shell " andshell 6 " link to each other, with shock transfer to shell.

Do not breaking away under the design prerequisite of the present invention, various distortion and improvement that those skilled in the art make technical scheme of the present invention all should fall in the protection range of claims of the present invention.

Claims (9)

1. micro electromagnetic vibrator, it is characterized in that: constitute by the coil, in-line iron core, bumper, magnet steel, vibration body and the elastic device that are arranged in the square shell, described in-line iron core, bumper and magnet steel all are arranged on vibration body inside, the both ends of the surface of described in-line iron core connect described bumper respectively and over against the one side of described magnet steel, the another side of described magnet steel is embedded in the described vibration body; Described in-line iron core has one or more, is wound with coil on the iron core, and the two ends of coil are drawn lead and linked to each other with external power source, and described vibration body fills up square shell substantially, and vibration body links to each other with shell by elastic device.

2. micro electromagnetic vibrator according to claim 1 is characterized in that: described in-line iron core is one, is positioned at the bottom of described vibration body.

3. micro electromagnetic vibrator according to claim 1 is characterized in that: described in-line iron core is one, is positioned at the middle part of described vibration body.

4. micro electromagnetic vibrator according to claim 1 is characterized in that: described in-line iron core is less two of volume, lays respectively at the upper and lower in the described vibration body.

5. according to each described micro electromagnetic vibrator of claim 1-4, it is characterized in that: described bonding magnetic steel is in the groove of vibration body.

6. micro electromagnetic vibrator according to claim 5, it is characterized in that: described elastic device is the reed that lays respectively at the rhombus of vibration body both sides, the projecting point on one side of described rhombus reed is connected the middle part of the side of described vibration body, and the projecting point of another side is connected with the inwall of described square shell.

7. micro electromagnetic vibrator according to claim 5, it is characterized in that: described elastic device is that the cross section that lays respectively at the vibration body both sides is curved reed, the two ends up and down of described shaped form reed are connected with the side of vibration body respectively, and middle-end is connected with the inwall of described square shell.

8. micro electromagnetic vibrator according to claim 5 is characterized in that: described elastic device is the porose silicon rubber body that is packed in the space between vibration body both sides and the square shell.

9. according to each described micro electromagnetic vibrator of claim 6-7, it is characterized in that: described connected mode is bonding or welding or riveted joint.

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