CN219139719U - Vibration damping intelligent electric vibration tool - Google Patents

Abstract

The utility model discloses a vibration damping intelligent electric vibration tool, which comprises a handle, a motor assembly, a vibration damping mechanism, a magnetic piece and a magnetic sensor, wherein the motor assembly is arranged on the handle; the handle is internally provided with a containing cavity, and the motor assembly, the vibration reduction mechanism, the magnetic piece and the magnetic sensor are all contained in the containing cavity; the vibration reduction mechanism comprises a fixed support, a vibrator and an elastic component, wherein the elastic component is arranged on the fixed support, the vibrator is connected with the elastic component, when the motor component vibrates, the vibration reduction component is excited by the motor to vibrate, the vibrator vibrates due to self mass inertia, the elastic component provides restoring force for restoring the vibrator to the original position, and the restoring force enables the vibrator to vibrate reversely to the motor component; the magnetic piece is arranged on the elastic component and vibrates along with the elastic component, and the magnetic piece and the magnetic sensor generate relative motion, and the magnetic sensor senses different signals by sensing the magnetic field change of the magnetic piece. The utility model can realize the actual large-torque tooth brushing under the low vibration state, and has better user experience and better tooth brushing effect.

Description

Vibration damping intelligent electric vibration tool

Technical Field

The utility model relates to the technical field of electric vibration tools, in particular to a vibration reduction intelligent electric vibration tool.

Background

At present, a conventional electric vibration tool in the market, such as an electric toothbrush, an electric massage tool and the like, is provided with corresponding working modes, and a user only needs to select a currently wanted working mode through a fixed button, however, the fixed working mode is single for the electric vibration tool, so that the use experience of the user is poor; the other is to identify the current state of the tool head by adding a corresponding sensing device, then adjust the working mode according to the identified current state of the tool head through a control program, and the sensing device is provided with a pressure sensor and the like, however, for the electric vibration tool, the function of the sensing device is only sensing, and the function is single.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provides a vibration reduction intelligent electric vibration tool.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

a vibration damping intelligent electric vibration tool comprises a handle, a motor assembly, a vibration damping mechanism, a magnetic piece and a magnetic sensor; the handle is internally provided with a containing cavity, and the motor assembly, the vibration reduction mechanism, the magnetic piece and the magnetic sensor are all contained in the containing cavity;

the vibration reduction mechanism comprises a fixed support, a vibrator and an elastic component, wherein the elastic component is arranged on the fixed support, the vibrator is connected with the elastic component, when the motor component vibrates, the vibration reduction component is excited by the motor to vibrate, the vibrator vibrates due to self mass inertia, the elastic component provides restoring force for restoring the vibrator to the original position, and the restoring force enables the vibrator to vibrate reversely to the motor component;

the magnetic piece is arranged on the elastic component, the magnetic piece vibrates along with the elastic component, the magnetic piece vibrates and generates relative motion with the magnetic sensor, and the magnetic sensor senses different signals by sensing the magnetic field change of the magnetic piece.

The implementation of the embodiment of the utility model has the following beneficial effects:

according to the embodiment of the utility model, the swing type vibration reduction mechanism is arranged, when the motor assembly vibrates, the vibration reduction assembly is excited by the motor assembly to generate vibration, the vibrator generates vibration due to self mass inertia, the elastic assembly provides restoring force for restoring the vibrator to the original position, and the restoring force enables the vibrator to generate reverse vibration with the motor assembly to form mechanical cancellation, so that the purpose of vibration reduction or vibration elimination is achieved; through setting up the magnetic part on the elastic component, magnetic part and elastic component move together, and the amplitude of elastic component and motor component's amplitude closely relate again, and the load condition of instrument head can influence motor component's amplitude again, therefore, the current state of instrument head can be reflected to the different signals that the magneto-sensor inducted, according to the current state of the instrument head of magneto-sensor discernment, can increase motor component's torsion through control program, realizes the increase of instrument head dynamics. The vibration damping mechanism dampens or dampens the vibrations while increasing the tool head force, so that the user does not experience uncomfortable strong vibration. The utility model can realize the vibration with large torque force in a low vibration sense state, and has better user experience and better vibration effect.

In addition, the vibration of the elastic component is excited by the vibration of the motor component, and the magnetic piece is arranged on the elastic component, so that the vibration state of the motor component can be accurately detected.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Wherein:

FIG. 1 is a schematic exploded view of a vibration damping mechanism according to an embodiment of the present utility model.

FIG. 2 is a schematic exploded view of a vibration damping mechanism according to another embodiment of the present utility model.

FIG. 3 is a schematic exploded view of a vibration damping mechanism according to another embodiment of the present utility model.

Fig. 4 is a schematic view showing a connection structure of a motor assembly and a vibration damping mechanism according to an embodiment of the present utility model.

Fig. 5 is a schematic cross-sectional view of a power vibration tool according to an embodiment of the present utility model.

FIG. 6 is a schematic view of the distribution of the vibration reduction mechanism inside the handle according to an embodiment of the present utility model.

FIG. 7 is a schematic view of the distribution of the vibration reduction mechanism inside the handle according to another embodiment of the present utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 5, the utility model discloses a vibration damping intelligent electric vibration tool, which comprises a vibration damping mechanism 10, a handle 20, a tool head, a motor assembly 40, a magnetic piece 80, a magneto-dependent sensor 90, a battery 50 and a control main board 60; the handle 20 is internally provided with a containing cavity, the motor assembly 40, the vibration reduction mechanism 10, the magnetic piece 80, the magnetic sensor 90, the battery 50 and the control main board 60 are all contained in the containing cavity, the motor assembly 40 comprises a motor 41 and an output shaft 42, the output shaft 42 extends out of the end part of the handle 20 and is connected with the tool head, the motor 41 drives the output shaft 42 to eccentrically rotate, and the eccentric rotation of the output shaft 42 drives the tool head to horizontally swing. In this particular embodiment, the tool head is a toothbrush head 30, and in other embodiments, the tool head may also be a massage head or the like.

Referring to fig. 1 to 3, the vibration damping mechanism 10 includes a fixed bracket 11, a vibrator 12 and an elastic component 13, the elastic component 13 is mounted on the fixed bracket 11, the fixed bracket 11 is directly or indirectly rigidly connected with a motor 41, the vibrator 12 is connected with the elastic component 13, when the motor component 40 vibrates, the vibration damping component is excited by the motor 41 to generate vibration, the vibrator 12 generates vibration due to self mass inertia, the elastic component 13 provides a restoring force for restoring the vibrator 12, and the restoring force enables the vibrator 12 to generate vibration opposite to the motor component 40 to form mechanical cancellation, so that the purpose of vibration damping or vibration elimination is achieved. The fixing bracket 11 is used for installing the vibrator 12 and the elastic assembly 13 so that the vibration damping mechanism 10 is integrated, and the vibration damping mechanism 10 is conveniently assembled outside the handle 20. The vibration frequency of vibrator 12 corresponds to the vibration frequency of motor 41. The electric vibration tool on the market at present mainly absorbs the energy of the vibration of the motor 41 through the soft rubber pad to realize vibration reduction, but the vibration reduction effect of the vibration reduction mode is not obvious for high-frequency vibration. If the electric vibration tool is opened and then placed on a table, the electric vibration tool can randomly move on the table due to strong vibration. Or the electric vibration tool is held by hand, so that the hand has strong tingling and bad use effect. The utility model adopts the swinging vibration damping mechanism 10, which can more effectively damp or damp the vibration of the high-frequency vibration source.

The magnetic element 80 is disposed on the elastic component 13, the magnetic element 80 vibrates along with the elastic component 13, the magnetic element 80 vibrates to generate relative motion with the magneto-sensitive sensor 90, and the magneto-sensitive sensor 90 senses different signals by sensing the magnetic field change of the magnetic element 80. The magnetic element 80 and the elastic element 13 move together, and the amplitude of the elastic element 13 is closely related to the amplitude of the motor element 40, so that the load condition of the tool head affects the amplitude of the motor element 40, and thus, the different signals sensed by the magneto-sensor 90 can reflect the current state of the tool head.

Taking an electric toothbrush as an example, when the motor assembly 40 is started and the toothbrush is not used for brushing teeth, the toothbrush head 30 is not loaded, the vibration amplitude of the motor assembly 40 is larger, so that the elastic assembly 13 is driven to generate larger vibration amplitude, the magnetic element 80 moves along with the elastic assembly 13, the magnetic element 80 also generates larger vibration amplitude, and the signal sensed by the magneto-sensitive sensor 90 is stronger. When the toothbrush head 30 is loaded during the oral brushing, the amplitude of the motor assembly 40 is reduced due to the loading, so that the elastic assembly 13 is driven to generate smaller amplitude, the magnetic element 80 also generates smaller amplitude, and the signal sensed by the magnetic sensor 90 is weakened, so that the current loading state of the toothbrush head 30 can be identified according to different signals sensed by the magnetic sensor 90. When the magnetic sensor 90 recognizes that the brush head 30 is loaded, the torque force of the motor assembly 40 can be increased by the control program to achieve an increase in brushing force. Although the brushing force is increased, the vibration damping mechanism 10 dampens or dampens the vibrations, and thus the user does not experience uncomfortable strong vibration. The utility model can realize the actual large-torque tooth brushing under the low vibration state, and has better user experience and better tooth brushing effect.

In the above embodiment, since the motor 41 drives the output shaft 42 to rotate in a biased manner, the vibrator 12 is preferably symmetrical about the output shaft 42 (or the oscillation center line of the motor), and the vibrator 12 reciprocates on both sides of the balance position in the direction perpendicular to the output shaft 42 with the output shaft 42 as the balance position to cancel or partially cancel tangential vibration generated by the motor 41. The elastic component 13 and the magnetic element 80 are also symmetrical about the output shaft 42, and the elastic component 13 and the magnetic element 80 also use the axis of the output shaft 42 (or the swing center line of the motor) as balance positions and reciprocate, rotate and swing and vibrate at two sides of the balance positions.

Preferably, the magneto-sensitive sensor 90 is disposed on the control motherboard 60, the magneto-sensitive sensor 90 is disposed opposite to the magnetic member 80, and the magneto-sensitive sensor 90 may be disposed opposite to the magnetic member 80 or biased, so long as the magneto-sensitive sensor 90 can induce the relative motion of the magnetic member 80.

In other embodiments, the magneto-dependent sensor 90 may also be disposed on a separate circuit board, and the magneto-dependent sensor 90 is electrically connected to the control motherboard 60 through the circuit board.

Referring to fig. 1-3, in one embodiment, spring assembly 13 includes a cantilevered end 131, cantilevered end 131 being coupled to vibrator 12. The number of the cantilever ends 131 is at least 1, at least one vibrator 12 is arranged on each cantilever end 131, the cantilever ends 131 are distributed symmetrically about the swinging center line of the motor, and the vibrator 12 is distributed symmetrically about the swinging center line of the motor. The magnetic member 80 is preferably disposed at the maximum amplitude of the elastic member 13 to improve the sensitivity of detection.

Referring to fig. 1, in a specific embodiment, the elastic component 13 includes a symmetrical elastic piece, where the symmetrical elastic piece is symmetrical with respect to a swing center line of the motor (or a center line of the output shaft when the output shaft is stationary), at least one of two opposite ends of the symmetrical elastic piece along the swing center line of the motor is a fixed end 134, the fixed end 134 is connected to the fixed bracket 11, two cantilever ends 131 symmetrical with respect to the swing center line of the symmetrical elastic piece are disposed away from the swing center line of the motor, and the two cantilever ends 131 are respectively connected to one vibrator 12. During vibration, the two vibrators 12 rotate and swing along the tangential direction of the vertical output shaft 42, the two cantilever ends 131 are firstly elastically bent, and the two cantilever ends 131 drive the beams connected with the fixed ends 134 (or the beams 135 between the two fixed ends 134) to generate torsional vibration, so that vibration counteracted by the motor 41 is generated.

Referring to fig. 1, in a specific embodiment, the symmetrical elastic piece is a cross elastic piece, two opposite ends of the cross elastic piece are fixed ends 134, the fixed ends 134 are connected with the fixed bracket 11, and the other two opposite ends of the cross elastic piece are cantilever ends 131 respectively, and the two cantilever ends 131 are respectively connected with a vibrator 12. When vibrating, the two vibrators 12 vibrate to drive the two cantilever ends 131 to bend first, at this time, the beam 135 between the two fixed ends 134 plays a damping role, then the beam 135 between the two fixed ends 134 is driven to bend also, when the two cantilever ends 131 reach the maximum displacement, the two cantilever ends 131 provide restoring force for restoring the vibrators 12 to the original position, and the restoring force enables the vibrators 12 to generate vibration counteracted by the motor 41. Both cantilever ends 131 meet at a midpoint of beam 135 between fixed ends 134. The thickness of the cross elastic piece is much smaller than the width of the beam 135 between the two fixed ends 134 or the width of the two cantilever ends 131, and the elasticity of the cross elastic piece in the thickness direction is improved.

In other embodiments, the symmetrical elastic sheet may also include a reinforcing rib structure or a reinforcing hollow structure.

Preferably, the magnetic member 80 is disposed at a symmetrical center of the symmetrical elastic sheet. For the cross elastic piece, the magnetic member 80 is disposed at the midpoint of the beam 135 between the two fixed ends 134, and the position is deviated from the balance position of the output shaft 42 to the maximum amplitude when vibrating, so that the sensitivity and accuracy of detection can be improved.

Preferably, in this embodiment, the magnetic member 80 is a magnetic sheet, and the magnetic sheet is attached to the symmetrical elastic sheet, and the surface of the magnetic sheet faces the magneto-sensor 90.

Preferably, the fixing bracket 11 is provided with a clamping groove 111 for clamping the fixing end 134, so that the assembly is convenient.

Preferably, the symmetrical elastic sheet is a metal sheet or a synthetic rigid material (such as engineering plastic, etc.), preferably, the Young's modulus of the symmetrical elastic sheet is higher than 2000MPa.

Referring to fig. 2 and 3, in another embodiment, the elastic member 13 includes a first cantilever beam 136 and a second cantilever beam 137, the first cantilever beam 136 has a first end 1361 and a second end 1362 disposed opposite to each other, the second cantilever beam 137 has a third end 1371 and a fourth end 1372 disposed opposite to each other, the first end 1361 and the third end 1371 are connected to form a cantilever end 131, the second end 1362 and the fourth end 1372 are connected to the fixed bracket 11, respectively, and the cantilever end 131 is provided with a vibrator 12. When vibrating, vibrator 12 vibrates in the direction perpendicular to output shaft 42, first cantilever beam 136 and second cantilever beam 137 are in compression and tension states respectively, when in compression state, damping effect is provided, when compressed and stretched to the maximum displacement, first cantilever beam 136 and second cantilever beam 137 provide restoring force for returning vibrator 12 to original position respectively, first cantilever beam 136 and second cantilever beam 137 are symmetrical about the motor swing center line, and cantilever end 131 is located on the motor swing center line.

Further, referring to fig. 2, in an embodiment, the second end 1362 and the fourth end 1372 are respectively connected to opposite ends of the fixed bracket 11, and the first cantilever beam 136 and the second cantilever beam 137 are respectively in an arc shape, which can enhance the elasticity of the first cantilever beam 136 and the second cantilever beam 137.

In another embodiment, referring to fig. 3, the second end 1362 and the fourth end 1372 are respectively connected to the middle position of the fixed bracket 11, and the first cantilever beam 136 and the second cantilever beam 137 are respectively linear.

In this embodiment, preferably, the elastic component 13 further includes a first supporting beam 138 connected to the first cantilever beam 136 and a second supporting beam 139 connected to the second cantilever beam 137, where the first supporting beam 138 is disposed on a side of the first cantilever beam 136 away from the second cantilever beam 137, and the second supporting beam 139 is disposed on a side of the second cantilever beam 137 away from the first cantilever beam 136, and the first supporting beam 138 and the second supporting beam 139 can respectively improve damping and restoring forces of the first cantilever beam 136 and the second cantilever beam 137 during vibration.

Referring to fig. 2 and 3, in the above two embodiments, one vibrator 12 located on the motor swing center line may be provided at the cantilever end 131, or more than two vibrators 12 may be provided, when a plurality of vibrators 12 are provided, the vibrator 12 is distributed symmetrically about the motor swing center line, preferably, two sides of the cantilever end 131 symmetrical about the motor swing center line are respectively provided with one vibrator 12, and the connecting direction of the two vibrators 12 is the same as the direction from the first cantilever beam 136 to the second cantilever beam 137, so that the elastic force in the direction from the first cantilever beam 136 to the second cantilever beam 137 can be improved.

The materials of the first cantilever beam 136 and the second cantilever beam 137 are plastic materials or metal materials, respectively. Preferably, in this embodiment, the materials of the first cantilever beam 136 and the second cantilever beam 137 are plastic materials, and are integrally formed with the fixing bracket 11.

Preferably, in the present embodiment, the magnetic member 80 is disposed at the cantilever end 131, and the magnetic member 80 is symmetrical about the output shaft 42, and in the present embodiment, the cantilever end 131 has the maximum amplitude.

Preferably, in the present embodiment, the cantilever end 131 is provided with a mounting hole 81, and the magnetic member 80 is received in the mounting hole 81.

Preferably, in the present embodiment, the magnetic member 80 is a long-strip magnet, and an end surface of the long-strip magnet faces the magneto-sensitive sensor 90.

In each of the above embodiments, vibrator 12 is a metal weight.

Referring to fig. 4, in a specific embodiment, the damping mechanism is directly and rigidly connected to the motor assembly 40, the damping mechanism is disposed at an end of the motor assembly 40 facing away from the output shaft 42, and the fixing bracket 11 is provided with a locking structure 112 that is in locking connection with the motor assembly 40, so that the locking structure 112 is convenient for positioning. To enhance the rigidity of the connection of the shock absorbing mechanism to the motor assembly 40, glue may also be dispensed at the connection. Of course, the connection may be achieved by dispensing alone. In other embodiments, the connection may be achieved by a fastener such as a bolt, and the fixing bracket 11 is provided with a bolt hole 113, and the fixing is achieved by a bolt. In this embodiment, the vibration absorbing mechanism and the motor assembly 40 form a new vibration absorbing motor assembly 40, the motor 41 swings to directly drive the vibrator 12 of the vibration absorbing mechanism 10 to swing, and the vibrator 12 swings and the motor 41 swings to generate opposite phase differences to form mechanical cancellation, so as to achieve the effects of vibration absorption or vibration elimination.

Referring to fig. 6 and 7, in another embodiment, the vibration absorbing mechanism is indirectly connected to the motor assembly 40, the electric vibration tool further includes a main frame 70, the motor assembly 40, the vibration absorbing mechanism 10, the battery 50 and the control main board 60 are all mounted on the main frame 70, then the main frame 70 is mounted in the accommodating cavity of the handle 20, the motor assembly 40 transmits the vibration to the main frame 70, and the main frame 70 transmits the vibration to the vibration absorbing mechanism. The damper mechanism 10 may be provided at any position of the mainframe bracket 70, and the damper mechanism 10 is preferably provided at a position where the strongest vibration feeling is generated when the motor 41 swings.

In another embodiment, the fixed bracket 11 and the main bracket 70 are combined into a structure, i.e. the elastic component 13 and the vibrator 12 are both mounted on the main bracket 70, or the motor component 40, the battery 50 and the control main board 60 are all mounted on the fixed bracket 11.

The magneto-sensitive sensor can be a Hall sensor, a magnetic compass, a magneto-sensitive coil, a combination of the magneto-sensitive coil and an iron core arranged in the magneto-sensitive coil, a semiconductor magneto-resistor and the like, and also can be a multi-axis magneto-sensitive sensor with single axis or two or more axes, such as a single-axis, 2-axis or 3-axis Hall sensor and the like.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. The vibration damping intelligent electric vibration tool is characterized by comprising a handle, a motor assembly, a vibration damping mechanism, a magnetic piece and a magnetic sensor; the handle is internally provided with a containing cavity, and the motor assembly, the vibration reduction mechanism, the magnetic piece and the magnetic sensor are all contained in the containing cavity;

the vibration reduction mechanism comprises a fixed support, a vibrator and an elastic component, wherein the elastic component is arranged on the fixed support, the vibrator is connected with the elastic component, when the motor component vibrates, the vibration reduction mechanism is excited by the motor to vibrate, the vibrator vibrates due to self mass inertia, the elastic component provides restoring force for restoring the vibrator to the original position, and the restoring force enables the vibrator to vibrate reversely to the motor component;

the magnetic piece is arranged on the elastic component, the magnetic piece vibrates along with the elastic component, the magnetic piece vibrates and generates relative motion with the magnetic sensor, and the magnetic sensor senses different signals by sensing the magnetic field change of the magnetic piece.

2. The vibration-damping intelligent electric vibration tool according to claim 1, further comprising a control main board, wherein the magnetic sensor is disposed on or electrically connected to the control main board, and the magnetic sensor is disposed in a mating relationship with the magnetic member.

3. The vibration-damped intelligent power vibration tool according to claim 1, wherein said spring assembly includes a cantilevered end, said cantilevered end being connected to said vibrator.

4. The vibration damping intelligent electric vibration tool according to claim 3, wherein the elastic component comprises a symmetrical elastic piece, the symmetrical elastic piece is symmetrical with respect to a swinging center line of the motor component, at least one of two opposite ends of the symmetrical elastic piece along the swinging center line is a fixed end, the fixed end is connected with the fixed support, the symmetrical elastic piece is further provided with two cantilever ends far away from the swinging center line, the two cantilever ends are symmetrical with respect to the swinging center line, and the two cantilever ends are respectively connected with one vibrator.

5. The vibration-damping intelligent electric vibration tool according to claim 4, wherein the magnetic member is disposed at a symmetrical center position of the symmetrical elastic piece.

6. The vibration damping intelligent electric vibration tool according to claim 4, wherein the fixing bracket is provided with a clamping groove for clamping the fixing end;

the symmetrical elastic sheets are metal sheets or artificially synthesized rigid materials.

7. The vibration-damped intelligent power vibration tool according to claim 3, wherein said spring assembly comprises a first cantilever beam having oppositely disposed first and second ends, said second cantilever beam having oppositely disposed third and fourth ends, said first and third ends being connected to form said cantilever ends, said second and fourth ends being connected to said fixed support, respectively.

8. The vibration-damped intelligent power vibration tool according to claim 7, wherein said magnetic member is disposed at said cantilevered end.

9. The vibration-damping intelligent electric vibration tool according to claim 7, wherein the vibrators are respectively arranged on two sides of the cantilever end;

the first cantilever beam and the second cantilever beam are respectively made of plastic materials or metal materials.

10. The vibration-damping intelligent electric vibration tool according to any one of claims 1 to 9, wherein the vibrator is a metal weight.

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