CN101626189A

CN101626189A - Vibration motor

Info

Publication number: CN101626189A
Application number: CN200910164628A
Authority: CN
Inventors: 爱德华·D·布里尔; 瑞克·L·哈本
Original assignee: HWAL KNIFE-SCISSORS CORP
Current assignee: HWAL KNIFE-SCISSORS CORP
Priority date: 2002-05-28
Filing date: 2002-05-28
Publication date: 2010-01-13
Anticipated expiration: 2022-05-28
Also published as: CN100541989C; CN1462103A; CN101626189B

Abstract

The invention relates to a vibration motor with a fixed piece and a movable piece. One end of the fixed piece and one end of the movable piece are hinged together; the movable piece does not generate internal elasticity under the influence of an electromagnetic field and is not provided with a tailstock; and other parts of a traditional motor are also removed so that the motor is easier to manufacture at a lower price. In addition, the motor can be assembled and adjusted before being mounted so as to improve the performance of automatic assembly.

Description

Vibrating motor

Technical field

The present invention relates to vibrating motor, especially relate to the vibrating motor that is used for clippers or similar products, it is compared with traditional vibrating motor has less part, and can be installed in the housing after the motor assembling.

Background technology

The structure of vibrating motor has multiple.Usually, the motor that is used for clippers or other device comprises the fixedly lamination lamination that is fastened in the housing.Be wrapped in the electromagnetic field that the coil on the fixing lamination changes, the movable lamination of one group of complementation of this field drives.

Movable lamination is in the proper place with respect to fixedly lamination is fastening with the tailstock of spring-like usually.At least one, normally two or three pole-faces are formed at fixing and movable lamination position near each other.One end of tailstock is fastened on the end of movable lamination, and the other end of tailstock is fastened to housing or fixedly on the lamination.Tailstock/movable stacked wafer moudle forms a kind of arm, the one end other end opening that is connected.The openend of movable lamination moves back and forth to drive hairclipper blade or other device.

Except tailstock, traditional vibrating motor also has the mechanical spring system, but its make motor be tuned to appropriate resonance frequency so motor operate as normal.Spring system also plays the effect of movable lamination of decision and hairclipper blade position when coil is not switched on.Typical spring system has two helical springs.When coil is logical when going up alternating current, tailstock, the electromagnetic field that spring system and coil produce moves back and forth hairclipper blade or other device.Motor is tuning to be finished to obtain good performance by regulating spring system medi-spring rigidity, usually by rotating the screw of regulating spring tension force.If correctly not tuning, motor does not just have enough power, perhaps can tremble or send click sound and in fact with a kind of mode work out of control or do not work.

The several factors influence is tuning, comprises the weight of movable piece, the weight of fixture, the length of arm moving part, the energy release rate of tuning spring, the alignment of pole-face, the rigidity of tailstock, and other factors.This installs each the change of these aspects can cause that all the work neutralization makes the problem in the assembling.

The change of tailstock proposes very big challenge to processing and manufacturing.Even if slight the variation taken place for tailstock material thickness or hardness, resonance frequency (speed of arm natural vibration) just is affected, because the required power of transfer arm is relevant with the rigidity of tailstock.They even changing, the bending of tailstock also can cause packing problem, because can make motor untunable.

Tailstock is as the second tuning spring except two tuning springs of spiral type.After hairclipper is tuning, if the neutral position that is not subjected to spring action of tailstock is different with the neutral position of arm on the assembly, tailstock is worked with regard to resisting one of them tuning spring, and the load that the duty ratio that one of them tuning spring is applied applies to another tuning spring wants big.This can cause the change of resonance frequency, because in order to compensate the bias load that tailstock applies, load on spring has changed.And the needed power of transfer arm also can change in this case.The bending of tailstock changes the location that also influences blade, makes the blade of correct aligning clippers become difficult in some cases.

Another problem of known vibrating motor is that its several of needs fits together in housing.Housing is molded by plastic usually, and it is because intrinsic warpage and change in size may make size change in the molding process.This change can cause makes and packing problem.

The change that is installed in the part size in the housing can produce other manufacturing and packing problem.For example, if drive the size error of finger,, arm lengths can cause tuning problem because changing the resonance frequency change that causes.In clippers, long finger can make the top of shear bar tooth can not align with the top of top blade tooth, and they just have correct overlap distance to have only alignment.If drive the finger bending, can cause the upper blade bending.If finger keeps left very much or keeps right very much, the shear bar tooth just can not be regulated with top blade tooth and align, thereby causes the cutting ability loss.

Size changes the pole-face dislocation that also can cause fixing and movable lamination.If too much change is arranged in the housing and/or in the arm assembly, the pole-face of arm lamination just can not align with the pole-face of coil lamination.May twist between the magnetic pole and will have the gap bigger thereby may produce vertical dislocation or lamination than the bottom on the top, or opposite.And a pair of magnetic pole may be more close more mutually than other magnetic pole.More than any situation, motor can not worked as the situation of magnetic pole alignment efficiently, because can be bigger than normal situation at some local magnetic gap, cause energy and/or loss in efficiency or is higher than normal energy consumption.

At a part, as housing, during the out-of-size scope, or when single all in the margin of tolerance that allows, but when the deviation of accumulating and required specification differ too big, above problem will appear.The tolerance build-up problem is difficult to find and solve usually, particularly when part is a lot.

In conventional motors, tuning spring is positioned at the afterbody or the bottom of motor, and away from the drive end of arm.This also can cause tuning problem, because spring balancing is relatively poor.

In a word, conventional motors has more relatively part, and this makes its expensive and making assembling difficulty.Automation is also very difficult, because design is very complicated.Therefore just need to make and assemble easily and be applicable to the motor of automatic manufacturing and assembling.

Therefore, an object of the present invention is to provide a kind of vibrating motor of new improvement.

Another purpose provides a kind of vibrating motor that is used for clippers and similar products of new improvement.

Another purpose provides a kind of vibrating motor of comparing cheapness and being easy to manufacture and assemble with conventional motors of new improvement.

And another purpose provides a kind of vibrating motor that does not have tailstock and the problem relevant with tailstock discussed above of new improvement.Another purpose provides a kind of insensitive vibrating motor of tolerance build-up to part of new improvement.

Another purpose provides having of a kind of new improvement and compares the vibrating motor with less with conventional motors.

What another purpose provided a kind of new improvement can assemble and be installed to vibrating motor in the housing in advance after assembling.

Summary of the invention

According to an aspect of the present invention, provide a kind of vibrating motor with fixture and movable piece.One end of movable piece is hinged on the end of fixture.Complementary pole-face on the other end opening of part, fixing there and movable piece is separated from each other by the gap of at least one predetermined variable.Another gap is arranged near the hinge usually, if desired, also other gap can be set.

Coil is wrapped on the bobbin of fixture.Behind the coil indirect current, it produces the magnetic flux that flows through fixture and movable piece.Magnetic flux passes the gap of hinge top, also passes the gap of the motor spare other end.

The effect of the resonance frequency when the biasing spring system mainly plays gap size and machine operation between the fixing and movable piece of decision.The bias voltage of spring system can be regulated so that obtain suitable gap and resonance frequency.Extension on the bobbin and the driving member on the movable piece are that spring system provides support.

The opening vibration end of movable piece has the device that enough energy drive the movable blade such as clippers.Whole motor can be assembled and be installed in the housing as monomeric unit.In fact, before installation, if desired, motor even can outside housing, test and tuning.

Movable piece does not adopt tailstock directly to be hinged on the fixture, and movable piece does not produce inner elastic force under the effect in magnetic field.The tailstock of conventional motors and other part all are removed, so motor can be made at an easy rate.Because it has less part, the tolerance build-up between the less part and simply be used for setting up the system of resonance frequency, so its also easier manufacturing and assembling.And motor can carry out tuning before installation, and this has just improved the performance of automatic assembling.

Description of drawings

In conjunction with the accompanying drawings, by with reference to the description of the embodiment of the invention, above-mentioned and other characteristics of the present invention and implementation will be more readily apparent from, and invention itself also can be better understood, wherein:

Fig. 1 is the perspective view of vibrating motor partly cut-away in accordance with the principles of the present invention;

Fig. 2 is the fixture of the use of motor shown in Fig. 1 and the plane graph of movable piece;

Fig. 3,4 and 5 is perspective views of the employed bobbin of motor shown in Fig. 1, wherein Fig. 5 shows the fixture that is installed in the bobbin;

Fig. 6 is the perspective view of the drive disk assembly of motor use shown in Figure 1;

Fig. 7 is the perspective view that is used for the hinge fixture of motor shown in Figure 1;

Fig. 8 is shown in Figure 2 a perspective view, and it shows by fixture shown in Figure 7 and is fixed on movable piece on the fixture;

Fig. 9 is that motor shown in Figure 1 is installed in the plane graph in the clippers; And

Figure 10 is the perspective view of clippers housing shown in Figure 9.

Embodiment

As illustrated in fig. 1 and 2, vibrating motor 10 comprises fixture 12 and movable piece 14.

Part

12,14 can be formed by a plurality of stacked laminations, or solid material is made.

Fixture 12 and movable piece 14 at one end form hinge 16.Hinged can formation by a lot of modes.In Fig. 1 and Fig. 2, the outer surface of the hinged end of fixture 12 is circular, resembles joint pin, and it has and is used for the opening 18 of mounting screw, as shown in the figure.The hinged end of movable piece 14 is crooked so that surround the sweep of fixture 12 at least in part and form butt bolt at inner surface.Preferably, the gap between the part in the hinge is as far as possible little, still allows movable piece 14 rotation when work simultaneously.

If desired, hinge 16 can be used plastics 19 (Fig. 2) or any other suitable low lost material lining, to reduce wearing and tearing and heat radiation.On movable piece 14, or on fixture 12, grease trough 20 can be set, as shown in Figure 1.Although do not demonstrate among the figure, can imagine that hinge 16 also can be by forming joint pin being set on the movable piece 14 and on fixture 12 butt bolt being set.

After the installation, motor 10 has two gaps 21,22 (Fig. 2) between fixture 12 and the movable piece 14.And embodiment illustrated in figures 1 and 2 has fixture and two gaps of L shaped shape, also can adopt other structure, for example has the C shape in two gaps, has the E shape in three gaps etc.The surface that forms

gap

21,22 is a pole-face.Preferably, the plane of the axes intersect of formation of the pole-face in gap 21 and opening 18.

Motor 10 also comprises the bobbin 23 (Fig. 3) with opening 24 (Fig. 4), and its split shed 24 makes bobbin 23 place around fixture 12 by sliding on the hinged end 16 of fixture 12, as shown in Figure 5.Coil 25 (Fig. 1) preferably is wound into before installation on the winding part 26 of bobbin 23.In some products, massager for example, coil can be wrapped on movable piece rather than the fixture.

Bobbin 23 also has arm 27 and is used for supporting for example spring system 28 (Fig. 1) of mobile controller spare.Also be provided with screwed hole 29, it is used for installing motor.Screwed hole 29 preferably passes bobbin gusset 30, and the back gusset can increase the rigidity of arm in being assembled into housing.Bobbin 23 can be made with a lot of methods, but preferably is molded as overall structure shown in Figure 1.

Spring system 28 (Fig. 1) is towards openend 31 location of fixture 12 and movable piece 14.Spring system 28 has determined the position of movable piece 14, and plays the resonance frequency of duration of work decision movable piece 14 and the effect of vibration amplitude.Spring system 28 comprise first spring, 32, the second springs 33 and with bobbin 23 on the adjustment screw 34 of hole 35 mutual screw-threaded engagement.Screw 34 preferably has the chambeies 36 (Fig. 9) that restraining spring 32 laterally moves, and the groove on the wall 38 37 is used for laterally moving of restraining spring 32 equally.Laterally moving of spring 33 limited by groove on groove on the wall 40 39 and the wall 42 or breach 41.

Fixture 12 has opening 43 at openend 31, is the purpose of installing, and it aligns with the hole 29 on the bobbin 23.Movable piece 14 forms at openend 31 and holds the also shape of fastening drive disk assembly 44 (see figure 6)s.By adopting C shape end structure 45 shown in Fig. 2 and the T shape end structure 46 that is used for drive disk assembly 44, as shown in Figure 6, by end 46 being slided into the opening or the movable end that can easily be fastened to part 14 in the end 45 up to sidewall 47 drive disk assemblies.The end 49 that recess 48 (Fig. 2) is convenient to movable piece 14 is crooked or curling, so that more tightly drive disk assembly 44 is being fastened on the movable piece 14 after the installation.It is contemplated that drive disk assembly 44 and movable piece 14 can be configured to single piece.Which kind of situation no matter, drive disk assembly is all on movable piece.

Screw 34 (Fig. 1) passes the hole 50 (Fig. 6) of drive disk assembly 44.Spring 32 (Fig. 1) is in tensioning state between the wall 38 of head of screw 34 and drive disk assembly 44.The tension force of spring 33 is kept by the wall 40 of drive disk assembly 44 and the arm 27 interior walls 42 of bobbin 23.Arm 27 threaded fastener screw 34 make screw 34 can easily regulate for tuning purpose simultaneously.

Movable piece 14 can tighten together with fixture 12 on hinge 16 in any suitable manner, as screw and packing ring, or screw and fixture 60, shown in Fig. 7 and 8.Fixture 60 has bottom surface 62, it leans against on the fixture 12 in hole 18 with respect to axis 63 axial restraint fixtures 12, the second surface 64 that on pliable and tough, flexible finger, has surface 66, wherein finger is depressed movable piece 14 and it is alignd with fixture 12, and by its fixture 60 can fix in position end face 68.By making surface 66 and surperficial 62 independent actions, hinge fixture 60 is tightened to the degree of needs on can be axially, and does not suppress the rotation of movable piece 14.

Device 60 also comprises second surface 72 on another jerk-finger linear element 73, it applies laterally or radial pressure to movable piece 14, to stablize movable piece 14 by unnecessary vibration on the elimination hinge when working.Movable piece 14 is preferably pushed down on surface 72, as shown in the figure.

As shown in Figure 9, motor 10 is installed in the clippers 80.Except motor 10, clippers 80 also comprise housing 82, that fix, removable or adjustable fixed blade 84, with and suitably fastening movable blade 86 relative with blade 84, as U.S. Patent No. 5,068,966, exercise question is described for " set of blades that is used for electric hair clipper ", at this it is incorporated herein by reference.Movable blade 86 is operably connected on the drive disk assembly 44.Mains switch and power supply are typically connected on the electric wire 87 on the motor 10, and, cover housing 82 with the lid (not shown).

Housing 82 (Figure 10) is injection molded usually, and comprises first screw bosses 88 that is used for mounting screw 89 and the second threaded bosses portion 90 that is used for mounting screw 91.The outer rim 93 that lug boss 90 has inner rim 92 and separated by gap 94.Outer rim 93 is area supporteds of movable piece 14.If desired, outer rim 93 can reduce to hold packing ring, ball bearing etc.Screw 91 is pressed onto fixture on the wheel rim 92, and movable piece is not exerted pressure.Like this, the work of motor is not applied to the torque influence on the screw 91.

Motor 10 can easily be assembled in advance and by the motor of assembling being put in the housing like this and being installed in the housing 82 as monomeric unit, promptly drive disk assembly 44 is operably connected on the movable blades 86, and with

screw

89,91 fastening motors.Screw 89,91 is fastened in the screwed hole on the housing 82.Motor 10 can be preceding tuning in being installed to housing 82, if desired, and also can be tuning after installation.

Clippers 80 can be by being fastened to fixed blade 84 on the housing with screw usually, and movable blade 86 is installed in spring usually closes on blade 84 and sentence and just make blade 86 move back and forth the cutting hair and easily make.

Use screw

89,91 that motor 10 is installed in the housing 82 then, wherein drive disk assembly 44 is meshed with movable blades 86.Cover lid on the housing 82 also fastening then.

Although described motor of the present invention, can imagine to also have a lot of other application, shaver for example, checkering machine, electric shear, air exhauster, sprayer, the device of massager and any other available vibrating motor operation with respect to clippers.In the product such as massager, movable piece can the directly vibration without drive disk assembly.

Although abovely described principle of the present invention, be understandable that this description only provides by example, rather than will limit scope of the present invention in conjunction with specific device and application.

Claims

1. vibrating motor that is used for the personal care product comprises:

Fixture,

The at one end described relatively fixture of movable piece, described movable piece is fixed, and is used for pivotal motion between the two,

Be used to be controlled at the opposite end of fixture and movable piece, described movable piece momental device with respect to fixture,

Be used to adjust the device and the whole bobbin of described control device,

Described bobbin comprises

The winding portion that is used for wrap wire on described bobbin; Described winding portion has inside opening, and by described inside opening, described fixture can be inserted into; With

With the arm of described winding portion one, described arm extends from described winding portion, is fastened on the described arm so that described winding portion and described arm are the part of overall structure and described adjusting device.