KR20170099941A - Personal care appliance - Google Patents

Abstract

Disclosed are vibration motor mounting systems for personal care devices that reduce vibration transmitted to a device handle. In order to reduce the vibration of the handle, the vibration motor is suspended in a personal care device via a suspension system.

Description

[0001] PERSONAL CARE APPLIANCE [0002]

This summary is provided to introduce a selection of concepts in a simple form which are explained in more detail in the detailed description below. This Summary is not intended to identify key features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

According to an aspect of the present invention, a personal care device is provided. The apparatus includes a handle having a longitudinal axis, a set of upper flexible mounts disposed in the handle, a set of lower flexible mounts disposed in the handle, and an oscillating motor in a balanced manner between the upper flexible mounts and the lower flexible mounts, the vibration motor defining an oscillation axis.

According to yet another aspect of the present invention, a personal care device is provided. The apparatus includes a handle base having a handle base and a handle top, the handle having a longitudinal axis, and a vibration motor positioned between the handle base and the handle top. The vibration motor is configured to transmit vibration motion to an object for an oscillation axis that is parallel to the longitudinal axis. The apparatus also includes a first vibration damper, a second vibration damper and a third vibration damper mounted between the vibration motor and the handle upper end, and a fourth vibration damper and a fifth vibration damper mounted between the vibration motor and the handle base . In one embodiment, the first oscillator, the second oscillator, the third oscillator, the fourth oscillator, and the fifth oscillator are configured to suspend the vibration motor within the handle. In these or other embodiments, the first, second and third vibration dampers, the fourth vibration dampers and the fifth vibration dampers are configured such that a preload force is applied to the vibration motor from the respective vibration dampers In the handle. In this or other embodiments, the first, second, third, and fourth anti-vibration members are located within the handle, and the preload, which is parallel to the vibration axis, The sum of the forces becomes zero and the sum of the moments generated by the preload forces on the axes orthogonal to the oscillation axis is zero.

In accordance with another aspect of the present invention, a personal care feast is provided. The apparatus comprising a handle including a longitudinal axis, a plurality of upper flexible mounts disposed within the handle, each upper flexible mount including an elastomeric vibration damper, a plurality of lower flexible mounts disposed within the handle, each lower slide The stiff mount includes an elastomeric vibration damper and a vibration motor suspended between the plurality of upper flexible mounts and the plurality of lower flexible mounts. In one embodiment, the upper flexible mounts and the lower flexible mounts are configured to apply a preload force to the vibration motor.

BRIEF DESCRIPTION OF THE DRAWINGS The foregoing aspects and many of the attendant advantages of the claimed subject matter will become better understood and appreciated more readily by reference to the following detailed description when considered in conjunction with the accompanying drawings,
1 is an exploded isometric view of one embodiment of a personal care device according to an aspect of the present invention.
Figure 2 is an exploded top isometric view of one embodiment of the personal care device handle of Figure 1;
3 is an exploded bottom isometric view of one embodiment of the personal care device handle of FIG.
Figure 4 is a functional block diagram of several components of the personal care device of Figure 1;
5 is a top view of one embodiment of a vibration motor suitable for use with the personal care device of FIG.
6 is a bottom view of the vibration motor of Fig.
7 is an exploded view of one embodiment of an upper motor mounting assembly in accordance with an aspect of the present invention.
Figure 8 is an exploded view of one embodiment of a bottom motor mounting assembly in accordance with an aspect of the present invention.
Fig. 9 is a visual acuity chart showing the forces exerted on the vibration motor of one embodiment by the upper motor mounting assembly of Fig. 7 and the lower motor mounting assembly of Fig. 8;

The following detailed description, taken in conjunction with the accompanying drawings, in which like reference numerals represent like elements, is intended as a description of various embodiments of the disclosed subject matter and is not intended to represent only such embodiments. Each embodiment described herein is provided by way of example only or illustration, and should not be construed as preferred or advantageous over other embodiments. The illustrative examples provided herein are not intended to be exhaustive or to limit the claimed subject matter in the precise form disclosed.

브랜드 제품에서 상업적으로 이용 가능하다. 미국 특허 제7,786,626호 및 클라리소닉 브랜드 제품의 개시는 여기에서 명확하게 인용으로서 참조된다. The present invention generally relates to vibration reduction of a personal care device. Personal care devices, as generally described, typically use a motor to create a particular workpiece motion / motion and in turn produce the desired functional result. Examples of such devices include, in particular, electric skin brushes, electric toothbrushes and razors. In some currently available personal care devices, the motors produce motion (rather than forward rotation) rather than pure rotation motion, with motions generated by resonating electromagnetic motors. Examples of such vibrating motors are disclosed in U.S. Patent No. 7,786,626, or may be incorporated into Claraisonic, such as Aria or Mia personalized skin care products

And are commercially available from branded products. The disclosure of U. S. Patent No. 7,786, 626 and Clarion Sonic brand products is hereby expressly incorporated by reference.

In such a device as described above, the vibration motor is mounted directly to the device handle. Vibration generated by the vibration motor causes vibration to be transmitted to its handle through its mounts. Such vibrations can be at least cumbersome and, in some cases, can be quite inconvenient for users of devices with a particularly small form factor. In addition, such vibrations can cause performance variations depending on how steady the handle is held by the user.

The following discussion provides an example of a vibration motor mounting system for a personal care device that reduces vibration transmitted to a device handle. In this example, the vibration motor produces a vibration motion that is appropriate for the associated workpiece. The workpiece of the personal care device may include, but is not limited to, a cleansing brush, composition applicators, exfoliation brush, exfoliation disc, toothbrush, shaving head, and the like. To reduce vibration of the handle, the vibration motor in one embodiment is suspended within the personal care device through a suspension system. One embodiment of the suspension system utilizes a compressible elastomeric damper to suspend the vibration motor within the handle. In one embodiment, the vibration isolator positions and aligns the vibration motor within the housing. In such an embodiment, the suspension system is configured to provide the same compression for the top and bottom of the vibration motor and is configured to provide a zero moment with respect to an axis orthogonal to the oscillation axis of the workpiece. As such, the vibration motor of one embodiment hangs on the handle in a balanced manner. In one embodiment, the suspension system is preloaded when the components of the personal care device are assembled. In the various examples described herein, the oscillating motion produced by the oscillating motor may be rotational, translational, or a combination thereof.

In the following description, various specific details are set forth in order to provide a thorough understanding of one or more embodiments of the present invention. However, it will be apparent to those skilled in the art that various embodiments of the present invention may be practiced without some or all of the specific details. In some instances, well-known process steps are not described in detail in order not to unnecessarily obscure the various aspects of the present invention. It will also be appreciated that embodiments of the present invention may utilize any combination of the features described herein.

Figure 1 is a partially exploded isometric view of one exemplary embodiment of a personal care device, generally designated 20, formed in accordance with an aspect of the present invention. As shown in Figure 1, the personal care device 20 includes a handle 24 detachably coupled to a workpiece, such as a brush head 28. 2 is an exploded view of one embodiment of the handle 24 shown in FIG. 2, handle 24 includes a handle base 30, a vibration motor 32, and a handle top 36. As shown in FIG. A workpiece mount 40 is also included and is coupled to the vibration motor 32 for movement thereon. In one embodiment, the workpiece mount 40 is configured to be detachably coupled to the brush head 28, with the handle top portion 36. As shown in FIG. The workpiece is shown as a brush head in the embodiment of FIG. 1, but could alternatively include a composition applicator, exfoliation disc, shaving head, and the like. Once attached, an exemplary article is oriented coaxially with the handle 24. The personal care device 20 also includes a vibration reduction mounting system, sometimes referred to herein as a suspension system, for suspending the vibration motor 32 within the handle 24, as will be described in greater detail below.

The handle base 30 is generally cylindrical in one embodiment and accommodates the operating structure of the device. As shown in block diagram form in FIG. 4, the operational structure of one embodiment includes alternating currents in alternating currents selected from a power storage source such as a vibration motor 32, a battery 44, And a drive circuit 48 that is constructed and arranged to transmit an alternating current to the vibration motor 32. In one embodiment, the drive circuit 48 may include an on / off button 50 (see FIG. 1) and may be a programmed microcontroller or microcontroller configured to control the transfer of alternating current to the vibration motor 32 A power control or mode control button 52 (see FIG. 1) coupled to a control circuit such as a processor.

An alternative embodiment of the vibration motor 32 is shown with reference to Figures 2, 5 and 6, although other configurations of the vibration motor may be implemented in the embodiment of the personal care device 20. [ 2, 5 and 6, the vibration motor 32 includes a motor base 60, a stator 64, and an armature assembly 66. A stator 64, sometimes referred to as an electromagnet or field magnet, is mounted for movement between the armature assembly 66 and the motor base 60. In the illustrated embodiment, the stator 64 has a stator core 74 having a center leg (hidden in Fig. 5) and two outer legs (hidden in Fig. 5) - core (70). The coil 74 is connected to a source of alternating current such as the battery power source drive circuit 48. In operation, the coil 74 generates a magnetic field of opposite polarity as the alternating current passes around the coil 74 and the center leg.

5, the armature assembly 66 includes a slightly bent armature 80 mounted for movement against the shaft 82 (see FIG. 2). The armature 80 includes a back iron 84 made of a ferromagnetic material. Two or more spaced magnets 86 and 88 are magnetically coupled to the back iron 84 while being magnetized in the radial direction. The magnets 86 and 88 are arranged so that the N pole of one magnet 86 faces outward while the N pole of the other magnet 88 faces inward. However, it should be understood that if the magnetic pole is in the opposite direction, the orientation can be reversed. In the illustrated embodiment, the armature 80 includes two surfaces that are disposed at an angle to each other, to which two or more magnets 86 and 88 are mounted. When assembled, the position and orientation of the magnets 86 and 88 allows a line perpendicular to the plane of the magnet passing through the mid-point of the magnet face to also pass through the axis 82.

The armature assembly 66 also includes an armature mount 90 that is secured to the handle base 30 (see FIG. 1) through the motor base 60 and is therefore a mechanical reference for the vibration system. As shown in FIG. 5, armature 80 is coupled in an alternating configuration to armature mount 90 by a pair of fastening elements shown as fastening elements 92 and 94. In this regard, the locking elements 92 and 94 are superimposed in the shaft 82 which is a functional pivot point for the armature 80 to vibrate. 5, an armature mount 90 extends outwardly from the end of the cross member 106 about the fastening elements 92 and 94 and extends outwardly from the end of the E-core 70 And extensions (100 and 102) terminating in an end positioned adjacent the leg. The lower portions of the extensions 100 and 102 form an interface cooperatively engageable with the upper peripheral surface of the motor base 60. In one embodiment, the motor base 60 (see FIG. 6) is secured to the armature assembly 66, particularly through fasteners such as screws or press fittings. Once engaged, the stator 64 is fixedly mounted therebetween.

The armature assembly 66 further includes a mounting arm 116 extending from a side of the armature 80. 2 and 5, the mounting arm 116 extends outwardly from the armature 80 and thereafter the mounting arm 116 is mounted on an axis (not shown) extending generally outwardly coaxially with the shaft 82 82 (perpendicular to the pivot axis of the workpiece) Mounted on the free end of the mounting arm 116 is a workpiece, such as a brush head 28 (see FIG. 1). Therefore, the configuration of the mounting arm 116 is configured to cause the workpiece to vibrate relative to the axis 82 parallel to the longitudinal axis of the personal care device. In some embodiments, the location / orientation of the mounting arm 116 may be changed, for example, by moving the position of the tip away from the axis 82 to produce a combined rotational / translational motion of the workpiece.

When assembled, the vibration motor 32 is mounted within the handle 24. In one embodiment, the vibration motor 32 is mounted between the handle upper end 36 and the handle lower end 30. In this regard, the armature mount 90 of one embodiment is formed with a first set of motor mounts, shown as three mounting posts 120A-120C in FIGS. 2 and 5. Mounting posts 120A extend upwardly from cross member 106 and mounting posts 120B and 120C extend upwardly from the ends of extensions 100 and 102, respectively. In one embodiment, the mounting posts 120A-120C are in the form of cylindrical bosses, the top of which lies in the same plane. In one embodiment, mounting post 120A lies on the X axis of vibration motor 32 and mounting posts 120B and 120C are equidistant from the X-axis, the advantages of which are described in greater detail below Will be explained. When assembled, the upper portion of the vibration motor 32 is mounted to the handle top portion 36 through the mounting posts 120A-120C as will be described in more detail below.

Similarly, one or more motor mounts are associated with the motor base 60. In one embodiment shown in Figures 3 and 6, the one or more motor mounts include a splined ring 128 that is coaxially disposed with the shaft 82 and extends downwardly from the motor base 60. When assembled, in one embodiment, the lower portion of the vibration motor 32 is mounted to the handle base 30 via the handle mounting structure 140, as described in more detail below.

As mentioned briefly above, one aspect of the present invention is to provide a technique or method for reducing vibration transmitted to a handle. In this regard, in order to reduce transmission of vibration to the handle 24, the vibration motor 32 in one embodiment is sometimes mounted in a manner suspended by a suspension system, referred to herein as a vibration isolation system. 7, the suspension system includes a set of anti-vibration devices 150 disposed between armature mount 90 and handle top 36 (not shown in FIG. 7). In one embodiment, the vibration dampers 150A-150C are a set of bushings configured to be disposed on mounting posts 120A-120C, respectively. In one embodiment, the bushings may be formed from, for example, rubber such as polyurethane, polyamide, copolyester and polyolefin blends, synthetic rubber or ThermoPlastic Elastomers (TPE) As shown in Fig. In one embodiment, the dampers 150B and 150C are the same size and smaller than the dampener 150A. The bushes and mounting posts are received by cooperatively configured cups 154A-154C fixedly coupled to the handle top. In addition, vibration dampers 150, mounting posts 120, and cups 154 form an upper motor mounting assembly. In one embodiment, the upper motor mounting assembly is located within a motor envelope. In operation, the vibration dampers 150 allow relative movement between the vibration motor 32 and the handle top 36 and thus form a first set of flexible mounts, sometimes referred to as upper flexible mounts.

In the illustrated embodiment, the cups 154 are integrally formed by separate components. Alternatively, the cups 154 may be integrally formed or otherwise fixedly secured to the handle top. Although the embodiment of FIG. 7 illustrates a mounting post 120 formed by armature mount 90 and cups 154 formed or associated with the handle top, in other embodiments the position of the cooperating structure of the upper flexible mounts is reversed Lt; / RTI >

8, the suspension system further includes a second set of vibration dampers 160 disposed between the motor base 60 and the handle base 30 (not shown in FIG. 8). In one embodiment, the vibration dampers 160A and 160B are configured as an elastomeric bushing connected to a central hub 164 that defines a splined bore 166 through the leg 162. The elastomeric bushing, leg 162 and central hub 164 are formed integrally from the illustrated embodiment and formed from a thermoplastic elastomer (TPE), such as those listed above, or natural or synthetic rubber. In one embodiment, the vibration dampers 150 (see FIG. 7) and the vibration dampers 160 are constructed of the same material.

8, the elastomeric bushing is configured to be held on cylindrical mounting posts 168A and 168B and the spline bore 166 is configured to engage the spline ring 128 of the motor base 60 3). In one embodiment, the center bore of the damper 160B is greater than the center bore of the damper 160A. In the illustrated embodiment, mounting posts 168A and 168B are formed by the handle mounting structure 140 and are located on the X-axis. In addition, the vibration dampers 160 and the posts 168A and 168B form a lower motor mounting assembly. In another embodiment, the spline interface of the vibration dampers 160, the posts 168A and 168B and the spline ring 128 and the spline bore 166 form a lower motor mounting assembly. The handle mounting structure 140 also includes a spline ring 180 that is coaxial with the shaft 82 and configured to mate with the spline bore 166. In one embodiment, In one embodiment, the lower motor mounting assembly is located within the motor envelope. In operation, the vibration dampers 160 allow relative movement between the vibration motor 32 and the handle base 30, thereby forming a second set of flexible mounts, sometimes referred to as a lower flexible mount. In one embodiment, the spline bore 166 also allows for relative movement between the vibration motor 32 and the handle base 30.

In one embodiment, the handle mounting structure 140 is integrally formed with the handle base 30. Alternatively, the handle mounting structure 140 in the illustrated embodiment is a discrete component that is removably mounted to the handle base 30 via press fitting or other suitable fastening technique such as a central King screw . In one embodiment, the handle mounting structure may include alignment posts that act as part of the press fitting, or that may serve as an anti-rotation feature to resist torque of the king screw in another embodiment, (170). Although the embodiment of FIG. 8 shows mounting posts 168A and 168B formed by the handle mounting structure 140, in other embodiments the mounting posts may be integrally formed or otherwise fixedly connected to the motor base Can be understood.

One assembly method will be described with reference to FIGS. 2, 3, 7, and 8. FIG. The handle 24 is assembled by locating the vibration motor 32 between the upper and lower motor mounting assemblies in one embodiment. Upper and lower threaded fastener mounts 172 and 176 (Figs. 2, 3 and 7) are provided to pull handle top 36 together with handle mounting structure 140 of handle base 30 8) is used as a screw. The handle upper portion 36 and the handle mounting structure 140 are configured such that the handle mounting structure 140 is aligned with the alignment posts 170 and their co- Aligns with the handle base 30 through components (not shown) and descends to the handle base 30 until it is supported by the handle base 30. Once aligned and supported, the handle base 30 is secured to the handle mounting structure 140 by, for example, a central king screw.

Upon assembly, the first and second sets of flexible mounts are preloaded in one embodiment. In one embodiment, the preloads disposed on the flexible mounts are selected to provide a suitable resistance when the user attaches the workpiece 28 to the workpiece mount 40 in a downward motion. Preloading the flexible mount may be accomplished by various configurations and / or techniques. For example, in one embodiment, the vibration dampers 150 and 160 may be configured to have an angled design, typically F ₁ -F ₅ (see FIG. 9), when the handle top portion 36 is pulled together with the handle mounting structure 140. And the preload force at the sex joint is transmitted on the vibration motor 32. [ In one embodiment, the vibration dampers 150 and 160 are oversized along the Z-axis of the device (i.e., the height of each damping device is greater than its associated cup or mounting post) Between the handle base 30 (via the mounting structure 140) and the motor base 60, and between the upper handle 36 and the armature mount 90, Compress. Compression of the vibration dampers 150A-150C and the vibration dampers 160A and 160B produces preload forces F ₁ -F ₅ , respectively. The force in this embodiment is the product of the modulus of elasticity of the vibration damper and the amount of compression (i. E., Compression distance). In one embodiment, the compression distances for each damper are the same.

In one embodiment, the vibration motor 32 is suspended in a balanced manner between the upper motor mounting assembly and the lower motor mounting assembly. To balance the vibration motor 32, the upper flexible mounts and the lower flexible mounts are configured such that the preload forces exerted against the vibration motor 32 cancel each other out. In other words, the upper flexible mounts and the lower flexible mounts are configured such that the sum of the forces F ₁ -F ₅ (see FIG. 9) relative to the vibration motor 32 along the Z axis when assembled is zero F _Z = 0). 9, the upper flexible mounts transmit the forces F ₁ -F ₃ downward on the vibration motor 32, while the lower flexible mounts are forced on the vibration motor 32 (F ₄ and F ₅ ) upward. Thus, the suspension system of one embodiment is configured to satisfy the following equation (1).

_(One)

It will be appreciated that in one embodiment, the material and / or the unit may be selected for each damper to vary the magnitude of forces F ₁ -F ₅ to satisfy equation (1) above. In one embodiment, the compression distances for each isolator are the same. In yet another embodiment, the isolators are constructed of the same material, but the size of the vibration dampers is different. In another embodiment, the size of the vibration dampers is the same, but the vibration dampers are made of different materials. In one embodiment, the vibration dampers 150B and 150C are configured so that the magnitudes of F ₂ and F ₃ are the same.

In addition to satisfying the above equation (1), in order to balance the vibration motor 32, the positions of the upper flexible mounts and the lower flexible mounts are also determined by the forces F ₁ -F ₅ on the X axis The generated moments are canceled out, and the moments generated by the forces (F ₁ -F ₅ ) about the Y axis are chosen to cancel out. In other words, the positions of the upper flexible mounts and the lower flexible mounts are selected so that the sum of the moments orthogonal to the Z axis (the oscillation axis of the product) of the motor 32 when the handle is assembled is zero (ΣM _X = 0,? M _Y = 0).

7 and 9, the upper flexible mounts formed by the isolators 150B and 150C are equidistant from the X axis of the vibration motor 32 (Y ₁ = Y ₂ ). In this embodiment, the upper flexible mount formed by the isolator 150A and the lower flexible mounts formed by the vibration dampers 160A and 160B are placed on the X axis of the vibration motor 32. [ Thus, when F _2. And F _3. Are the same, no moments are generated with respect to the X-axis when the handle is assembled.

In another embodiment where F ₂ and F ₃ are not the same, the distance from the X axis is modified to satisfy the following equation (2).

(2)

Further, in the embodiment shown in Figure 9, the dustproof groups upper flexible mount formed by the (150A, 150B, and 150C) are positioned on respective distance X _1, X ₂ and X ₃ from the Y-axis of the vibration motor. In this embodiment, the lower flexible mounts formed by the vibration dampers 160A and 160B are located at distances X ₄ and X ₅ , respectively, from the Y axis of the vibration motor 32. As such, in one embodiment, the suspension system is configured such that the forces F _2. And F ₃ are the same and satisfy both of Equations (1) and (3) and (4) below.

(3)

(4)

In another embodiment, the vibration dampers are configured such that the forces F _2. And F ₃ are not equal. In this embodiment, the suspension system is configured such that only Eqs. (1) and (3) are satisfied.

For purposes of this disclosure, the terms "top", "bottom", "upper", "lower", "vertical", " Terms such as "inwardly," "outwardly," "inner," "outer," "front," "rear," and the like are to be interpreted as descriptive , It should be noted that the scope of the claims is not limited. It is also to be understood that the term " including, "" comprising," or " having ", and variations thereof, include additional items as well as items listed thereafter, it means. Unless otherwise limited, the terms "connected "," coupled ", and "mounted ", as well as variations thereof, are used extensively herein and include direct and indirect connections, couplings, .

The principles, exemplary embodiments, and modes of operation of the present invention have been described in the foregoing description. However, aspects of the present invention which are intended to be protected should not be construed as limited to the specific embodiments disclosed. Furthermore, the embodiments described herein should be considered as illustrative rather than restrictive. It will be understood that modifications and variations can be made by others and equivalents applied without departing from the spirit of the invention. Accordingly, it is expressly intended that all such modifications, variations, and equivalents be within the spirit and scope of the invention as claimed.

Exemplary embodiments of the present invention in which proprietary ownership or rights are claimed are defined as follows:

Claims (20)

A handle having a longitudinal axis;
A set of upper flexible mounts disposed within the handle;
A set of upper flexible mounts disposed within the handle; And
And an oscillating motor in a balanced manner between the upper flexible mounts and the lower flexible mounts, wherein the vibration motor defines a vibration axis
Personal care devices. The method according to claim 1,
Wherein the set of lower flexible mounts includes a plurality of lower flexible mounts, the set of upper flexible mounts includes a plurality of upper flexible mounts, and the number of lower flexible mounts is greater than the number of upper flexible mounts Number and other
Personal care devices. 3. The method of claim 2,
Wherein the number of lower flexible mounts is less than the number of upper flexible mounts
Personal care devices. 4. The method according to any one of claims 1 to 3,
Each of the upper flexible mounts and each of the lower flexible mounts being configured to have a preload force
Personal care devices. 5. The method of claim 4,
Wherein the lower flexible mounts and the upper flexible mounts are cooperatively positioned within the handle and the sum of the moments generated by the preload forces orthogonal to the oscillation axis is substantially zero, The sum of the load forces is configured to be zero
Personal care devices. 6. The method according to any one of claims 1 to 5,
Each of said upper flexible mounts and each of said lower flexible mounts comprising compressible elastomeric vibration isolators
Personal care devices. The method according to any one of claims 1 to 6,
Wherein the lower flexible mounts rest on the X axis of the vibration motor and the X axis is perpendicular to the longitudinal axis of the handle
Personal care devices. 8. The method according to any one of claims 1 to 7,
The upper flexible mounts include three vibration dampers, one vibration damper is placed on the X axis of the vibration motor, while the other two vibration dampers are located at an equivalent distance on the opposite side of the X axis from each other , Said X axis being perpendicular to the longitudinal axis of said handle
Personal care devices. 9. The method according to any one of claims 1 to 8,
Wherein the set of upper flexible mounts comprises three upper flexible mounts, the set of lower flexible mounts comprising two flexible mounts
Personal care devices. A handle having a handle base and a handle top, said handle having a longitudinal axis;
A vibration motor positioned between the handle base and the handle top, the vibration motor being configured to transmit vibration motion to an object for an oscillation axis parallel to the longitudinal axis;
A first vibration damper, a second vibration damper and a third vibration damper mounted between the vibration motor and the handle upper end; And
A fourth vibration damper and a fifth vibration damper mounted between the vibration motor and the handle base,
Lt; / RTI >
Wherein the first vibration damper, the second vibration damper, the third vibration damper, the fourth vibration damper and the fifth damper are configured to suspend the vibration motor in the handle, and the first damper, Wherein the vibration damper, the third vibration damper, the fourth vibration damper and the fifth vibration damper are configured in the handle so that a preload force is applied to the vibration motor from each vibration damper, and the first vibration damper, Wherein the third oscillator, the fourth oscillator and the fifth oscillator are located in the handle, the sum of the preload forces parallel to the oscillation axis is zero, and the sum of the preload forces parallel to the oscillation axis is zero And the sum of the moments generated by the preload forces is zero
Personal care devices. 11. The method of claim 10,
Each damper is configured to be compressed in an equivalent amount when the handle is assembled
Personal care devices. The method according to Claim 10 and 11,
The first and second dampers may have different sizes
Personal care devices. 13. The method according to any one of claims 10 to 12,
Wherein the fourth and fifth dampers have different sizes
Personal care devices. A handle including a longitudinal axis;
A plurality of upper flexible mounts disposed within said handle, each upper flexible mount including an elastomeric vibration damper;
A plurality of lower flexible mounts disposed within said handle, each lower flexible mount including an elastomeric vibration damper; And
A vibration motor suspended between the plurality of upper flexible mounts and the plurality of lower flexible mounts,
Lt; / RTI >
Wherein the upper flexible mounts and the lower flexible mounts are configured to apply preload forces to the vibration motor
Personal care devices. 15. The method of claim 14,
The vibrating motor is mounted in a balanced manner
Personal care devices. 16. The method according to claim 14 or 15,
Wherein the number of upper flexible mounts is different from the number of lower flexible mounts
Personal care devices. 17. The method according to any one of claims 14 to 16,
Wherein the number of upper flexible mounts is greater than the number of lower flexible mounts
Personal care devices. The method according to any one of claims 14 to 17,
Each upper flexible mount and each lower flexible mount is configured to compress equally when the handle is assembled
Personal care devices. The method according to any one of claims 14 to 18,
Wherein each upper flexible mount of the plurality of upper flexible mounts comprises an elastomeric bushing and at least two of the elastomeric bushings are of a different size
Personal care devices. The method according to any one of claims 14 to 19,
Wherein each lower flexible mount of the plurality of lower flexible mounts includes an elastomeric bushing, at least two of the elastomeric bushings having different sizes
Personal care devices.

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