CN217244918U - Electric toothbrush with magnetic resilience mechanism - Google Patents

Abstract

The utility model discloses a have magnetism resilient means and electric toothbrush, including swing motor, swing motor output is equipped with fixed subassembly, be equipped with an at least magnet on the fixed subassembly, correspond the swing motor output and install the front end housing, the front end housing inboard is equipped with two magnet two, magnet one is located between two magnet two, through the repulsion effort that adopts in the magnetic field, can play the effect that has the buffering characteristic of mechanical spring characteristic and reverse promotion promptly, can avoid mechanical contact again, can effectively solve because mechanical fatigue and the short-lived problem, avoided eliminating the resonance that mechanical noise and traditional spring produced, can also make resilient system more stable, do not receive the influence of spring coefficient.

Description

Electric toothbrush with magnetic resilience mechanism

Technical Field

The utility model belongs to the technical field of drive arrangement, specifically a have magnetism resilient means and electric toothbrush.

Background

Electric toothbrush is through the quick rotation or the vibration of motor core, make the brush head produce high-frequency vibration, decompose into slight foam with toothpaste in the twinkling of an eye, go deep into clean slit between the teeth, meanwhile, the vibration of brush hair can urge the blood circulation in oral cavity, there is massage effect to gum tissue, wherein high-end electric toothbrush is the vibrating, there is an electrically driven vibrating motor inside the toothbrush of vibration type, can let the brush head produce the high-frequency swing of perpendicular to brush holder direction, can be equipped with buffer gear at vibrating motor's output usually, traditional mode is to adopt mechanical spring, when vibrating motor swings at every turn, utilize the spring to cushion, the resilience force auxiliary motor swing of spring is utilized to the while, but adopt the spring to cushion and have following shortcoming:

1. the weak point with stress concentration is punched, so that the service life is influenced;

2. the inherent resonance frequency of the spring is fixed, and the high-efficiency interval range of the swing frequency of the motor is limited;

3. extra mechanical noise exists at the joint due to the existence of stress deformation when the high-frequency repeated torsion is carried out;

the positive and negative rotation has different elastic coefficients, which causes the swing amplitude of the motor to be unbalanced left and right.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a have magnetism resilient means and electric toothbrush to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a magnetism resilient mounting constructs has, includes swing motor, the swing motor output is equipped with fixed subassembly, be equipped with at least a magnet one on the fixed subassembly, correspond the swing motor output and install the front end housing, the front end housing inboard is equipped with two magnet two, magnet one is located between two magnet two.

The utility model has the advantages that:

through adopting the repulsion effort in the magnetic field, can play the effect that has the buffering characteristic of mechanical spring characteristic and reverse promotion promptly, can avoid mechanical contact again, can effectively solve because the short-lived problem of mechanical fatigue, avoid eliminating the resonance that mechanical noise and traditional spring produced, still can make the resilience system more stable, do not receive the influence of spring coefficient.

Other features and advantages of the present invention will be described in detail in the detailed description which follows.

Drawings

FIG. 1: the utility model discloses a spatial structure chart.

FIG. 2: the embodiment of the utility model is an explosion diagram.

FIG. 3: the cross section A-A of figure 1 of the present invention.

FIG. 4 is a schematic view of: the embodiment of the utility model discloses a magnet magnetic pole sketch map.

FIG. 5 is a schematic view of: the embodiment of the utility model discloses a second section schematic diagram.

FIG. 6: the embodiment of the utility model discloses a two magnet magnetic pole sketch maps.

FIG. 7 is a schematic view of: the utility model discloses a drive arrangement schematic diagram.

Reference numerals: 101-swing motor, 102-fixed component, 1021-fixed frame, 1022-bearing, 103-magnet I, 104-front end cover, 105-magnet II, 106-magnet III, 107-magnet IV, 108-magnet V, 109-magnet six, 110-rotating shaft and 111-shell.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.

Please refer to fig. 1-7;

the first embodiment;

the utility model discloses a rebound mechanism is applicable to the system that has the swing action, for this system provides buffering and reverse power, for example in the electric toothbrush, the action range of swing motor 101 between forward and reverse is minimum, and the frequency is very high thereby produces the vibration, and this rebound structure mainly forms buffering and reverse power through the repulsion effort in magnetic field, in this embodiment, set up magnet one 103 on fixed subassembly 102 and have a mode and polylith, the effect that its reached is the same;

as shown in fig. 3 and fig. 4, when the first magnet 103 is a single piece, one side of the first magnet 103 is S-pole, the other side is N-pole, and the two second magnets 105 on the front cover 104, likewise one side is S-pole, and the other side is N-pole, wherein the S-pole of one second magnet 105 is opposite to the S-pole of one side of the first magnet 103, and the N-pole of the other second magnet 105 is opposite to the N-pole of the first magnet 103, in a stationary state, the first magnet 103 is located at a middle position of the two second magnets 105, the swing motor 101 drives the first magnet 103 to reciprocate between the two second magnets 105, and by utilizing the principle that like poles repel each other, when the S-pole of the first magnet 103 is close to the S-pole of the second magnet 105, the repelling force is larger, so as to play a role of buffering, when the first magnet 103 moves in a reverse direction, the repelling force becomes elastic potential energy release, so as to push the first magnet 103 to move in a reverse direction, that is, F1 is the motor torque when the first magnet 103 moves in a reverse direction, then the process is the same when the N pole of the first magnet 103 is close to the N pole of the second magnet 105; it should be noted that the swing motor 101 drives the first magnet 103 to reciprocate without contacting the two magnets;

by adopting the repulsive force in the magnetic field, the buffer characteristic with the characteristic of a mechanical spring and the effect of reverse pushing can be achieved, mechanical contact can be avoided, the problem of short service life caused by mechanical fatigue can be effectively solved, the resonance generated by mechanical noise and a traditional spring is avoided being eliminated, and a rebound system can be more stable and is not influenced by the coefficient of the spring;

when the number of the first magnets 103 is two, the two first magnets 103 are located between the two second magnets 105, and form a V shape, the working principle is the same as that described above, and the distance between the two second magnets 105 needs to be increased due to the addition of one magnet, so that a sufficient activity space is provided, the actual work of the swing motor 101 is not affected, that is, the actual generated vibration effect is not affected, and the principle can be referred to specifically.

In this embodiment, as shown in fig. 3 and 4, in order to further stabilize the rebound mechanism, a magnet three 106 is provided on the fixed member 102 to face the magnet one 103, and a magnet four 107 is provided on the inner side of the front end cover 104, and the magnet three 106 is located between the two magnets four 107.

Example two, refer to fig. 5 and 6;

it should be noted that, because there are two sets of two magnets 105 and four magnets 107, the magnet five 108 can be located on any side, and the example that the magnet five 108 is located on the left side, wherein one side of the magnet five 108 is the S pole and the other side is the N pole, according to the above-mentioned embodiment, the side of one magnet two 105 facing away from the magnet one 103 is the N pole, so that the N pole side of the magnet five 108 is opposite to the N pole side of the magnet two 105, and the S pole side of the magnet five 108 is opposite to the S pole side of one of the magnets four 107, although the above-mentioned embodiment does not describe the magnet four 107, the arrangement of the magnetic poles can be adjusted according to the actual situation, and those skilled in the art can realize that when the swing motor 101 drives the magnet one 103 to move, the magnets five 108 are driven to act synchronously, and the effects of buffering and providing elastic potential energy can also be generated.

Similarly, a magnet six 109 may be disposed on the side of the fixing component 102 opposite to the magnet five 108, and the magnet six 109 is disposed between another magnet two 105 and another magnet four 107.

Based on the above embodiment, since four magnets (two magnets 105 and two magnets 107) are provided inside the front cover 104, the angle between the adjacent magnets is preferably 90 °.

The electric toothbrush driving device further comprises a shell 111, the shell 111 is arranged on the outer side of the swing motor 101 and the front end cover 104 and wraps the swing motor 101 and the front end cover 104 to form the electric toothbrush driving device, a rotating shaft 110 extending in the axial direction is installed at the end portion of the fixing component 102, and the rotating shaft 110 penetrates through the front end cover 104.

In this embodiment, the fixing assembly 102 is composed of a fixing frame 1021 and a bearing 1022, and the rotating shaft 110 passes through the bearing 1022 to be connected with the fixing frame 1021, so that when the swing motor 101 drives the fixing frame 1021 to rotate, the rotation is smoother under the action of the bearing 1022.

The utility model also provides an electric toothbrush including above-mentioned drive arrangement, because electric toothbrush and above-mentioned embodiment are based on same design, its technical effect that brings is the same, and concrete content can refer to the narration of above-mentioned embodiment, and the no longer repeated description herein.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may include only a single embodiment, and such description is for clarity only, and those skilled in the art will be able to make the description as a whole, and the embodiments may be appropriately combined to form other embodiments as will be apparent to those skilled in the art.

Claims (9)

1. A magnetic rebound mechanism comprising an oscillating motor (101), characterized in that: the output end of the swing motor (101) is provided with a fixed assembly (102), at least one first magnet (103) is arranged on the fixed assembly (102), a front end cover (104) is installed corresponding to the output end of the swing motor (101), two second magnets (105) are arranged on the inner side of the front end cover (104), and the first magnet (103) is located between the two second magnets (105).

2. A magnetic rebound mechanism as set forth in claim 1 wherein: the fixed component (102) is provided with a magnet III (106) opposite to the magnet I (103), two sides of the magnet III (106) are provided with a magnet IV (107), and the magnet IV (107) is fixedly arranged on the front end cover (104).

3. A magnetic rebound mechanism as set forth in claim 2 wherein: and a fifth magnet (108) is further arranged on the fixing component (102), and the fifth magnet (108) is positioned between the second magnet (105) and the fourth magnet (107).

4. A magnetic rebound mechanism as set forth in claim 3 wherein: and a magnet six (109) opposite to the magnet five (108) is arranged on the fixing component (102), and the magnet six (109) is positioned between the other magnet two (105) and the other magnet four (107).

5. A magnetic rebound mechanism as set forth in claim 4, wherein: the inner side of the front end cover (104) is provided with four magnets, and the included angle between every two adjacent magnets is 90 degrees.

6. A magnetic rebound mechanism as set forth in claim 1 wherein: the fixing component (102) comprises a fixing frame (1021), the fixing frame (1021) is connected with the output end of the swing motor (101), a bearing (1022) which is coaxial with the swing motor (101) is arranged at the end part of the fixing frame (1021), and the bearing (1022) is connected with the front end cover (104).

7. A magnetic rebound mechanism according to any one of claims 1 to 6, further comprising: the end of the fixed component (102) is provided with a rotating shaft (110) extending in the axial direction, and the rotating shaft (110) penetrates through the front end cover (104).

8. A magnetic rebound mechanism as set forth in claim 7, wherein: the electric toothbrush driving device further comprises a shell (111), wherein the shell (111) is arranged on the outer side of the swing motor (101) and the outer side of the front end cover (104), and the swing motor and the front end cover are wrapped to form the electric toothbrush driving device.

9. An electric toothbrush characterized by: comprising a drive device according to claim 8.

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