阅读说明：本技术 直线振动电机和电子设备 (Linear type vibration motor and electronic equipment ) 是由 冈安慎介 于 2019-05-16 设计创作，主要内容包括：本发明提供一种直线振动电机,抑制动子向与振动方向交差的方向振动。该直线振动电机具有：动子(10),一体地具有磁体(12)；以及线圈(30),使绕组部分(31、32)与所述磁体(12)的磁力线(M1、M2)交差,并接近所述动子(10)；通过向所述线圈(30)通电使所述动子(10)沿一个轴向振动,其中,所述磁体具有：两个磁体片(12a、12b),使磁化方向沿所述一个轴向,并在与所述一个轴向交差的方向上排列,且具有方向彼此相反的磁极；以及另外的磁片体(12c、12d),具有在所述交差方向上被磁化的磁极,使与所述两个磁体片的同端侧的两个方向彼此相反的磁极成为相同磁极的磁极,与所述两个磁体片的同端侧的两个方向彼此相反的磁极接触或接近。(The present invention provides a kind of linear type vibration motor, and mover is inhibited to vibrate to the direction reported to the leadship after accomplishing a task with direction of vibration.The linear type vibration motor includes mover (10), is provided integrally with magnet (12)；And coil (30), so that windings section (31,32) and the magnetic line of force (M1, M2) of the magnet (12) is reported to the leadship after accomplishing a task, and close to the mover (10)；Make the mover (10) along an axial vibration by being powered to the coil (30), wherein, the magnet includes two magnet slices (12a, 12b), make the direction of magnetization along one axial direction, and with arranged on one direction axially reported to the leadship after accomplishing a task, and have the reciprocal magnetic pole in direction；And other magnetic sheet body (12c, 12d), with the magnetic pole being magnetized on the direction of reporting to the leadship after accomplishing a task, make the magnetic pole for becoming same pole with the reciprocal magnetic pole of both direction of the same end side of described two magnet slices, with the reciprocal magnetic pole of both direction of the same end side of described two magnet slices in contact with or close to.)

1. a kind of linear type vibration motor, comprising:

Mover is provided integrally with magnet；And

Coil makes windings section and the magnetic line of force of the magnet report to the leadship after accomplishing a task, and close to the mover,

By being powered to the coil, make the mover along an axial vibration,

The linear type vibration motor is characterized in that,

The magnet includes

Two magnet slices, make the direction of magnetization along one axial direction, and with arranged on one direction axially reported to the leadship after accomplishing a task, and With the reciprocal magnetic pole in direction；And

Other magnetic sheet body has the magnetic pole being magnetized on the direction of reporting to the leadship after accomplishing a task, also, makes same with described two magnet slices Magnetic pole of the reciprocal magnetic pole of the both direction of end side as same pole, two with the same end side of described two magnet slices The reciprocal magnetic pole in direction in contact with or close to.

2. linear type vibration motor as described in claim 1, which is characterized in that

There are two the coil is arranged in a manner of being located at the two sides in the direction of reporting to the leadship after accomplishing a task,

For described two coils, the direction of reporting to the leadship after accomplishing a task two sides are opposite, windings section of a lateral coil and the other side The current direction of the windings section of coil is identical.

3. linear type vibration motor as claimed in claim 1 or 2, which is characterized in that

The one axial side and the other side that the other magnet slice corresponds to described two magnet slices are provided with two It is a.

4. linear type vibration motor as claimed in claim 3, which is characterized in that

The windings section that each coil in described two coils has current direction opposite in the side and the other side, and Keep two windings sections opposite with described two other magnet slices respectively.

5. a kind of electronic equipment has linear type vibration motor according to any one of claims 1 to 4.

Technical field

The present invention relates to a kind of linear type vibration motor and with the electronic equipment of the linear type vibration motor.

Background technique

Vibrating motor (or vibration brake) is built in portable electronic device, is transmitted as by vibration to carrier The device of the generation of the signals such as incoming call, alarm etc. and it is widely available, become and take the portable wearable electronics of with person and set Essential device in standby.In addition, in recent years, vibrating motor realizes sense of touch (skin in man-machine interface as touch panel etc. Sense feedback) device be of concern.

Develop various modes for this vibrating motor, wherein by the linear reciprocating vibration of mover can generate compared with The linear type vibration motor vibrated greatly is of concern.For linear type vibration motor, mover side is provided with hammer and magnet, leads to It crosses and is powered to the coil that stator side is arranged in, the Lorentz force for acting on magnet becomes driving force, makes mover in an axial direction It is of reciprocating vibration.

For example, such as the record in patent document 1, in this existing linear type vibration motor, by the magnetic for making mover side Body becomes the structure of Halbach array, the larger magnetic field for being biased to the side of mover thickness direction is generated, to increase mover Thrust.

Patent document 1: Japanese Unexamined Patent Publication 2014-23238 bulletin.

However, being biased to the magnetic field of the side of mover thickness direction, root due to producing according to the above-mentioned prior art According to the mover of vibration and the positional relationship of coil, the Lorentz force for being biased to the side of above-mentioned thickness direction is acted on magnet, is moved Son vibrates on above-mentioned thickness direction, is likely to become the reason of generating noise, noise.

Summary of the invention

In order to solve described problem, the present invention has following composition.

A kind of linear type vibration motor, comprising: mover is provided integrally with magnet；And coil, make windings section and the magnetic The magnetic line of force of body is reported to the leadship after accomplishing a task, and close to the mover, by making the mover along an axial vibration to coil energization, this is straight Linearly coupled motor is characterized in that,

The magnet includes

Two magnet slices, make the direction of magnetization along one axial direction, and with arranged on one direction axially reported to the leadship after accomplishing a task Column, and there is the reciprocal magnetic pole in direction；And

Other magnetic sheet body has the magnetic pole being magnetized on the direction of reporting to the leadship after accomplishing a task, also, makes and described two magnet slices Same end side the reciprocal magnetic pole of both direction become same pole magnetic pole, with the same end side of described two magnet slices The reciprocal magnetic pole of both direction in contact with or close to.

Detailed description of the invention

Fig. 1 is the stereogram exploded view for indicating linear type vibration motor of the invention.

Fig. 2 is the cross-sectional view in the same linear type vibration motor of central cutout of short side direction.

Fig. 3 is the plan view for indicating to be omitted the state of cover and cover lateral coil in same linear type vibration motor.

Fig. 4 A, Fig. 4 B are the main portion sectional views after the same linear type vibration motor of central cutout of short side direction, figure 4A indicates that mover is in the state of initial position, and Fig. 4 B indicates the mover state mobile to side.

Fig. 5 is the perspective view for indicating to have an example of electronic equipment of linear type vibration motor.

Fig. 6 A, Fig. 6 B are the main portion sectional views of the linear type vibration motor of comparative example, and Fig. 6 A indicates that mover is in initial The state of position, Fig. 6 B indicate the mover state mobile to side.

The explanation of appended drawing reference

1: linear type vibration motor；

10: mover；

11: hammer body；

12: magnet；

12a, 12b, 12c, 12d: magnet slice；

120: elastomeric element；

31,32: windings section；

30: coil；

100: portable data assistance (electronic equipment)；

M1, M2: the magnetic line of force.

Specific embodiment

In the following, the embodiments of the present invention will be described with reference to the drawings.In the following description, the phase in different attached drawings The identical component of function is indicated with appended drawing reference, and suitably omits the repeated explanation in each figure.

Described in B as shown in Figure 1 to Figure 4, linear type vibration motor 1 includes mover 10, is provided integrally with magnet 12；Elastomeric element 20, Support mover 10 simultaneously enables the mover 10 to vibrate；Coil 30 makes windings section 31 and the magnetic line of force M1, M2 of magnet 12 report to the leadship after accomplishing a task, And close to mover 10；And framework 40, elastomeric element 20 and coil 30 are fixed therein portion.It is exchanged by applying to coil 30 Electricity vibrates mover 10 along an axial direction (X-direction of diagram).

Mover 10 integrally comprises hammer body 11 and magnet 12, and is supported for vibration by aftermentioned two elastomeric elements 20.

Hammer body 11 is made of the high metal material of specific gravity (such as tungsten), and is formed as having through-hole in central side when vertical view The frame-shaped of 11a.

Through-hole 11a is the rectangular opening for penetrating through mover 10 in a thickness direction, is fitted into simultaneously fixed magnet 12.

As depicted in figs. 1 and 2, magnet 12 includes two magnet slices 12a, 12b, makes the direction of magnetization along an axial direction (X-axis Direction), and arranged on the mover thickness direction (Z-direction) axially reported to the leadship after accomplishing a task with said one, while having reciprocal Magnetic pole；Another magnet slice 12c makes the both direction with the one end of the said one of above-mentioned two magnet slice 12a, 12b axial direction Reciprocal magnetic pole S, N respectively become two one end side portions of same pole (pole S and the pole N), with above-mentioned two magnet slice 12a, Reciprocal magnetic pole S, N contact of the both direction of the one end of the said one axial direction of 12b；And another magnet slice 12d, make With both direction reciprocal magnetic pole N, S of the another side of the said one axial direction of two magnet slices 12a, 12b respectively at One end for two one end side portions of same pole (pole N and the pole S), with the said one axial direction of above-mentioned two magnet slice 12a, 12b Reciprocal magnetic pole S, N contact of the both direction of side.

In other words, two magnet slices 12c, 12d are disposed of two magnet slices that will be overlapped on mover thickness direction 12a, 12b are from its sandwich, and pole orientation is opposite each other.In addition, the pole orientation of two other magnet slices 12c, 12d Also opposite each other.For each magnet slice 12c (or 12d), make magnetic pole (pole S and the N with the same end side of two magnet slices 12a, 12b Pole or the pole N and the pole S) respectively become same pole two end sides side, the magnetic with the same end side of two magnet slices 12a, 12b Pole (pole S and the pole N or the pole N and the pole S) contact.

Therefore, according to the magnet 12, on the side and the other side of mover thickness direction, dual Halbach battle array is constituted Column.

There are two the settings of elastomeric element 20, positioned at the two sides of the direction of vibration of mover 10.

Each elastomeric element 20 is metal leaf spring, and the one end in elastic direction is connect with mover 10, moreover, another End side is connect with the side wall inner surfaces of framework 40, and flexibly supports mover 10 along said one axial (X-direction).

As another example of the elastomeric element 20, leaf spring, the helical spring etc. except diagram shape can also be.

There are two the settings of coil 30, the mover thickness direction (Z-direction) reported to the leadship after accomplishing a task positioned at the direction of vibration with mover 10 Two sides keep defined gap between mover 10 respectively.

Each coil 30 is the coil along the X-direction illustrated by the cord wrap being wrapped by flat hollow shape, one side End face and magnet 12 are opposite, and another side end face is fixed on the inner surface of framework 40.

Moreover, each coil 30 the side of mover direction of vibration (X-direction) and the other side have current direction a1, a2 that This opposite windings section 31,32.The two windings sections 31,32 are opposite with two magnet slices 12c, 12d of two sides respectively.

In addition, magnet slice 12c (or 12d) to be placed in the line of intermediate side (upside of diagram) as shown in Fig. 4 A, Fig. 4 B The electric current side of the windings section 31 (or 32) of the coil 30 of the windings section 31 (or 32) and the other side (downside of diagram) of circle 30 It is identical to a1, a1 (or a2, a2).

So that the identical method of current direction is had the winding direction for setting each coil 30, adjustment supply electric power etc., can be used Know technology.

According to illustrated example, framework 40 is configured to the base portion for making the flat box-like cover 42 of lower opening cover rectangular flat plate The hollow box of 41 upside.

The coil 30 of side is fixed in the upper surface of base portion 41.

In addition, the inner surface in the top wall portion 42a of cover 42 is fixed with the coil 30 of the other side, while in X-direction two There are two elastomeric elements 20,20 for support respectively on the inner surface of sidewall portion 42b, 42b of side.

Next, the characteristic action effect of the linear type vibration motor 1 with above structure is described in detail.

Fig. 4 A, Fig. 4 B schematically show movement when linear type vibration motor 1 moves in one direction along with vibration.

Firstly, mover 10 is big by the elastomeric element 20,20 of two sides under the original state that two coils 30,30 are not powered on Cause equably exerts a force, and is in static shape.

Under above-mentioned original state, when supplying alternating current to two coils 30,30, pass through two coils 30,30 and magnetic Magnetic action between body 12, mover 10 are of reciprocating vibration.

It further illustrates, substantially around magnet 12, forms the magnetic force of mover thickness direction (Z-direction) The magnetic line of force M2 of line M1 and mover direction of vibration (X-direction) (referring to Fig. 4 A, Fig. 4 B).

Therefore, when flowing through unidirectional electric current, and the winding portion of magnetic line of force M1 and each coil 30 in two coils 30,30 When 31,32 current direction a1, a2 being divided to report to the leadship after accomplishing a task, the Lorentz in a direction of the X-direction along diagram is produced in magnet 12 Power L1.In addition, producing that of the Z-direction along diagram in magnet 12 when magnetic line of force M2 and current direction a1, a2 report to the leadship after accomplishing a task This reversed Lorentz force L2, L2.

Therefore, Lorentz force L2, L2 of the opposite direction are offset, and mover 10 is mainly by Lorentz force L1 and to X-axis side To movement.

Therefore, when persistently supplying alternating current to mover 10, mover 10 is in the repressed state of swing to Z-direction Under, smoothly vibrate in the X direction.

I.e., it is assumed that the comparative example 1 as shown in Fig. 6 A, Fig. 6 B, one in two coils 30 is omitted, and with single magnet 12e replace two magnet slices 12a, 12b when, the Lorentz force L2 by Z-direction is influenced, mover 10 will in vibration to Z-direction is swung, but according to the linear type vibration motor 1 with above structure, can prevent such case, and improve it is noise reduction and Durability.

Next, explanation has the electronic equipment of linear type vibration motor 1.

Fig. 5 shows the portable letter of the electronic equipment as the linear type vibration motor 1 with embodiments of the present invention Cease terminal 100.

The portable data assistance 100 be configured to the reception in response to external signal, touch operation panel 50 (including touch Display) touch operation etc. vibrate linear type vibration motor 1, by the structure of above-mentioned magnet 12 etc., can effectively drop Noise, noise etc. when low linear type vibration motor 1 vibrates, and there is excellent durability.

According to above embodiment, as particularly preferred embodiment, in the direction of vibration of two magnet slices 12a, 12b Two sides be provided with magnet slice 12c, 12d, as another example, also can be omitted the magnet slice 12c (or 12d) of wherein side.

More than, embodiments of the present invention are described in detail, but specific structure is not limited to these implementations Mode, the present invention also include the design alteration not departed from the range of main idea of the present invention.In addition, for above-mentioned each embodiment For, as long as special contradiction or problem is not present with its purpose and structure etc., it will be able to which mutual technology of converting is gone forward side by side Row combination.