CN209808610U - Electric toothbrush is with rotation type vibrating motor with shock-absorbing function - Google Patents

Abstract

The utility model relates to the technical field of electric toothbrushes, in particular to a rotary vibration motor with a shock absorption function for an electric toothbrush, which solves the defect that the vibration motor is easy to damage in the prior art, and comprises a shell, a driving shaft and a rear cover, wherein the outer wall of the shell is provided with a first connecting seat, the upper part of the first connecting seat is provided with a first connecting hole, the front side of the first connecting seat is provided with a fixed seat, the front side of the fixed seat is fixedly connected with a spring, the other end of the spring is fixedly connected with a second connecting seat, the upper part of the second connecting seat is provided with a second connecting hole, the front end of the shell is in interference fit with a sealing bearing, the inner ring of the sealing bearing is in interference fit with the driving shaft, the front side of the driving shaft is provided with a second rotating bearing, the utility model can limit the amplitude of the motor, prevent the motor from colliding with the inner wall, so that the two bearings are not easy to deform.

Description

Electric toothbrush is with rotation type vibrating motor with shock-absorbing function

Technical Field

The utility model relates to an electric toothbrush technical field especially relates to an electric toothbrush is with rotation type vibrating motor with shock-absorbing function.

Background

Along with the improvement of people's standard of living, consciousness to oral cavity health care also strengthens gradually, more and more people choose to use electric toothbrush to clean the tooth, electric toothbrush passes through the quick rotation or the vibrations of motor core, make the brush head produce high frequency vibrations, decompose toothpaste into slight foam, go deep into clean slit between the teeth, meanwhile, the blood circulation of import chamber can be promoted in the vibration of brush hair, there is the massage effect to gum tissue, at present, the inside motor of electric toothbrush is mostly rotation type vibrating motor, this kind of generator is when driving the vibration of brush head, itself also is influenced by the reaction force of brush head, bear stronger vibration, make vibrating motor damage easily.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defect that the vibrating motor in the prior art is easy to damage, and providing a rotary vibrating motor for an electric toothbrush with a damping function.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a rotary vibration motor with shock absorption function for an electric toothbrush comprises a shell, a driving shaft and a rear cover, wherein the driving shaft is arranged in the shell, a rotor is arranged on the upper portion of the driving shaft, a stator matched with the rotor is arranged on the inner side of the shell, the rear portion of the shell is in threaded connection with the rear cover, a through pipe is arranged on the upper portion of the shell, a first connecting seat is arranged on the outer wall of the shell, a first connecting hole is formed in the upper portion of the first connecting seat, a fixing seat is arranged on the front side of the first connecting seat, a spring is fixedly connected to the front side of the fixing seat, a second connecting seat is fixedly connected to the other end of the spring, a second connecting hole is formed in the upper portion of the second connecting seat, a sealing bearing is in interference fit with the front end of the shell, the inner ring of the sealing bearing is in interference fit with the, and the inner ring of the second rotating bearing is in interference fit with the driving shaft, and the outer ring of the second rotating bearing is in interference fit with the shell.

Preferably, one side that the inside of shell is close to the back lid is provided with the mount, and the outside of mount and the inner wall fixed connection of shell, the inboard interference fit of mount has first rotating bearing, and first rotating bearing's inner circle with drive shaft interference fit.

Preferably, a sealing ring is arranged inside the through pipe.

Preferably, a contact pad is fixedly connected to an inner side of the second connection holder, and an inner side of the contact pad is in contact with an outer wall of the housing.

Preferably, a pressing washer is provided between the seal bearing and the second rotary bearing.

Preferably, the material of the extrusion gasket is silicon rubber or natural rubber.

The utility model has the advantages that:

1. the outer side of the vibration motor is provided with two connecting seats, the motor is allowed to slightly vibrate relative to the inner wall of the toothbrush handle, the amplitude of the motor is limited, the motor is prevented from colliding with the inner wall of the toothbrush handle, and the motor is protected.

2. The driving shaft of the vibration motor is supported by the three bearings, the torsion borne by the driving shaft is dispersed, and the extrusion gasket is arranged between the sealing bearing and the rotating bearing, so that the supporting force of the two bearings can be provided, and the two bearings are not easy to deform.

Drawings

Fig. 1 is a schematic structural view of a rotary vibration motor for an electric toothbrush with a shock-absorbing function according to the present invention;

fig. 2 is a schematic structural view of a position a of a rotary vibration motor for an electric toothbrush having a shock-absorbing function according to the present invention;

fig. 3 is a schematic diagram of a structure at B of the rotary vibration motor for an electric toothbrush having a shock-absorbing function of the present invention.

In the figure: the structure comprises a shell 1, a fixing frame 2, a driving shaft 3, a rotor 4, a stator 5, a rear cover 6, a first rotating bearing 7, a first connecting seat 8, a through pipe 9, a fixing seat 10, a spring 11, a second connecting seat 12, a contact pad 13, a sealing bearing 14, a squeezing gasket 15 and a second rotating bearing 16.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1-3, a rotary vibration motor for an electric toothbrush having a shock-absorbing function, comprising a housing 1, a driving shaft 3 and a rear cover 6, the driving shaft 3 is disposed inside the housing 1, a rotor 4 is disposed on the upper portion of the driving shaft 3, a stator 5 matched with the rotor 4 is disposed on the inner side of the housing 1, the rear portion of the housing 1 is in threaded connection with the rear cover 6, a vent pipe 9 is integrally disposed on the upper portion of the housing 1, a first connecting seat 8 is integrally disposed on the outer wall of the housing 1, a first connecting hole is disposed on the upper portion of the first connecting seat 8, a fixed seat 10 is disposed on the front side of the first connecting seat 8, a spring 11 is welded on the front side of the fixed seat 10, a second connecting seat 12 is welded on the other end of the spring 11, a second connecting hole is disposed on the upper portion of the second connecting seat 12, a sealing bearing 14 is in, a second rotating bearing 16 is arranged on the front side of the driving shaft 3, the inner ring of the second rotating bearing 16 is in interference fit with the driving shaft 3, and the outer ring of the second rotating bearing 16 is in interference fit with the shell 1.

Wherein, the inside one side that is close to back lid 6 of shell 1 is provided with mount 2, and the outside of mount 2 and the inner wall screwed connection of shell 1, and the inboard interference fit of mount 2 has first rotating bearing 7, and the inner circle of first rotating bearing 7 and 3 interference fit of drive shaft.

In order to prevent the motor from water entering, a sealing ring is arranged inside the wire passing pipe 9, the wire is connected with the stator 5, the wire is clamped tightly by the sealing ring, and silicone adhesive is filled between the wire and the sealing ring for further enhancing sealing.

In order to reduce friction between second connecting socket 12 and housing 1, contact pad 13 is glued to the inner side of second connecting socket 12, and the inner side of contact pad 13 contacts the outer wall of housing 1.

Wherein, a squeezing gasket 15 is arranged between the sealing bearing 14 and the second rotating bearing 16, and the material of the squeezing gasket 15 is silicon rubber or natural rubber.

Example (b): under PLC's control, stator 5 circular telegram, rotor 4 positive and negative rotation in turn with magnetism, drive shaft 3 positive and negative rotation in turn, drive shaft 3 drives and drives the brush head through the pendulum rod and vibrate, the pendulum rod vibrates the time, the motor also receives the reaction force of pendulum rod, first connecting seat 8 and second connecting seat 12 are connected with the toothbrush handle through the screw respectively, because the motor receives the reaction force of pendulum rod and is attenuated gradually by the motor front end to the rear end, the rear end of motor is fixed, the motor is when receiving the reaction force of pendulum rod and take place the vibration, spring 11 takes place to stretch out and draw back, the absorption ripples that shakes, make the amplitude of motor front end reduce.

When the driving shaft 3 is subjected to the torque force, the sealing bearing 14 and the second rotary bearing 16 are pressed, and the pressing gasket 15 is elastically deformed to support the sealing bearing 14 and the second rotary bearing 16, so that the deformation of the sealing bearing 14 and the second rotary bearing 16 is prevented.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (6)

1. The rotary vibration motor with the shock absorption function for the electric toothbrush comprises a shell (1), a driving shaft (3) and a rear cover (6), wherein the driving shaft (3) is arranged inside the shell (1), a rotor (4) is arranged on the upper portion of the driving shaft (3), a stator (5) matched with the rotor (4) is arranged on the inner side of the shell (1), the rear portion of the shell (1) is in threaded connection with the rear cover (6), a through pipe (9) is arranged on the upper portion of the shell (1), the rotary vibration motor is characterized in that a first connecting seat (8) is arranged on the outer wall of the shell (1), a first connecting hole is formed in the upper portion of the first connecting seat (8), a fixing seat (10) is arranged on the front side of the first connecting seat (8), a spring (11) is fixedly connected to the front side of the fixing seat (10), a second connecting seat (12) is fixedly connected to the other end of the spring, and the upper portion of second connecting seat (12) has seted up the second connecting hole, the front end interference fit of shell (1) has sealed bearing (14), and the inner circle and drive shaft (3) interference fit of sealed bearing (14), the front side of drive shaft (3) is provided with second rolling bearing (16), the inner circle and the drive shaft (3) interference fit of second rolling bearing (16), and the outer lane and shell (1) interference fit of second rolling bearing (16).

2. The rotary vibration motor for an electric toothbrush having a shock-absorbing function as claimed in claim 1, wherein a fixing frame (2) is disposed at a side of the inside of the housing (1) close to the rear cover (6), and an outer side of the fixing frame (2) is fixedly connected to an inner wall of the housing (1), the inner side of the fixing frame (2) is interference-fitted with the first rotary bearing (7), and an inner ring of the first rotary bearing (7) is interference-fitted with the driving shaft (3).

3. The rotary vibration motor for an electric toothbrush having a shock-absorbing function as claimed in claim 1, wherein a sealing ring is provided inside the vent tube (9).

4. The rotary type vibration motor for an electric toothbrush having a shock-absorbing function as claimed in claim 1, wherein a contact pad (13) is fixedly connected to an inner side of the second connection holder (12), and an inner side of the contact pad (13) is in contact with an outer wall of the housing (1).

5. A rotary type vibration motor for an electric toothbrush having a shock-absorbing function according to claim 1, wherein a pressing washer (15) is provided between the sealing bearing (14) and the second rotary bearing (16).

6. The rotary type vibration motor for an electric toothbrush having a shock-absorbing function as claimed in claim 5, wherein the material of the pressing pad (15) is silicon rubber or natural rubber.