CN209107644U - Electric toothbrush shaft structure - Google Patents

Abstract

The utility model relates to an electric toothbrush shaft structure, which comprises a rotating shaft arranged on an electric toothbrush, wherein the rotating shaft is provided with a shaft neck, a shaft body and a shaft head; the shaft neck is connected with an executing element of the electric toothbrush, the shaft body is clamped with a shell of the electric toothbrush, and the shaft head is detachably connected with a brush head of the electric toothbrush; the spindle nose is provided with the recess of electric toothbrush brush head joint, along still seted up on the spindle nose axial end face and connected face and joint face, be provided with several U type grooves on the joint face. The electric toothbrush shaft structure enables the electric toothbrush head and the shaft to be detachably connected through the groove; the design of connecting face and joint face is adopted for the first wearing and tearing to electric toothbrush axle when being used for cushioning electric toothbrush when first high frequency swing of brush when rotating of electric toothbrush brush, the first high frequency swing of brush of electric toothbrush is further cushioned in the U type groove of joint face design again and the axial force that brings for electric toothbrush axle damages, thereby improves electric toothbrush axle's life.

Description

Electric toothbrush shaft structure

technical field

The utility model relates to the technical field of electric toothbrushes, in particular to an electric toothbrush shaft structure.

Background technique

With the improvement of people's requirements for the quality of life, daily oral care has become more and more particular, and many people choose to use electric toothbrushes instead of ordinary toothbrushes. The electric toothbrush can remove plaque more thoroughly, reduce gingivitis and bleeding gums, and the oral care effect is obvious; the electric toothbrush makes the brush head produce high-frequency motion, instantly decomposes the toothpaste into fine foam, and deeply cleans the teeth, thus achieving deep cleaning At the same time, the vibration of the bristles can promote the blood circulation of the oral cavity and have a massage effect on the gum tissue. At present, there are two types of electric toothbrushes on the market according to the movement state of the brush head: rotary type and vibration type.

The existing vibrating electric toothbrush is provided with a drive motor and a rotating shaft. The drive motor and the rotating shaft are connected together by an eccentric wheel. The rotation of the driving motor drives the eccentric wheel to rotate, and the eccentric motion is used to make the rotating shaft vibrate, and the other end of the rotating shaft is connected with a brush head. , so as to achieve the effect of high frequency oscillation of the brush head of the electric toothbrush. Referring to Figure 1, most of the rotating shafts of the current electric toothbrush are designed with a gap at one end to connect with the brush head, and the other end is connected with the actuator. The brush head is fixed on the rotating shaft in the way of long-term disassembly and assembly of the rotating shaft and the brush head handle.

Therefore, it is necessary to provide an electric toothbrush shaft structure to solve the deficiencies of the prior art.

Utility model content

In order to overcome the deficiencies of the prior art, the utility model provides an electric toothbrush shaft structure which improves the service life of the electric toothbrush.

The technical scheme of the present utility model is as follows:

An electric toothbrush shaft structure includes a rotating shaft arranged on an electric toothbrush, the rotating shaft is provided with a journal, a shaft body and a shaft head; the shaft journal is connected with the actuator of the electric toothbrush, and the shaft body It is clamped with the casing of the electric toothbrush, and the shaft head is detachably connected with the brush head of the electric toothbrush; the shaft head is provided with a groove for clamping with the brush head of the electric toothbrush. The shaft end face of the shaft head is also provided with a connecting surface and a clamping surface, and the clamping surface is provided with several U-shaped grooves.

Preferably, at least two grooves are provided on the shaft head, the two grooves are respectively arranged symmetrically along the axis of the shaft head, and the depth of the grooves is 0.25 mm.

Preferably, the inclined surface connecting the connecting surface and the shaft head is 43.5° to 46.5° with the axis of the shaft head; the inclined surface connecting the clamping surface and the shaft head and the shaft of the shaft head The heart is at 30°.

Preferably, the connecting surface is provided with a first inclined surface, and the first inclined surface divides the connecting surface into a first connecting surface and a second connecting surface.

Preferably, the first inclined plane and the second connecting plane are at 30°.

Preferably, the clamping surface is provided with a second inclined surface, the second inclined surface divides the clamping surface into a first clamping surface and a second clamping surface, and the U-shaped groove is provided on the first clamping surface. On the two clamping surfaces, the first clamping surface and the second inclined surface are at 30°.

Preferably, the depth of the U-shaped groove is 0.1 mm.

Preferably, a limiting step cylinder is further provided between the shaft body and the shaft head.

The beneficial effects of the utility model are: compared with the prior art, the electric toothbrush shaft structure facilitates the detachable connection between the brush head of the electric toothbrush and the electric toothbrush shaft through the groove; When the toothbrush head rotates, the clamping surface is used to buffer the wear of the electric toothbrush shaft when the electric toothbrush head swings at a high frequency, and the U-shaped groove designed on the clamping surface further buffers the electric toothbrush head from the high-frequency swing to the electric toothbrush shaft. The incoming axial force is damaged, thereby increasing the service life of the electric toothbrush shaft, thereby increasing the service life of the electric toothbrush.

Description of drawings:

FIG. 1 is a schematic structural diagram of an electric toothbrush shaft structure according to the prior art.

FIG. 2 is a schematic three-dimensional structural diagram of the electric toothbrush shaft structure according to the present invention.

FIG. 3 is a schematic structural diagram of the electric toothbrush shaft structure according to the present invention.

FIG. 4 is an enlarged view of FIG. 3A of the present invention.

Detailed ways

In order to make the invention purpose, technical scheme and technical effect of the present utility model clearer, the present utility model will be further described below with reference to the specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for the purpose of illustration only and do not represent the only embodiment.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

2, the electric toothbrush shaft structure of the present invention includes a rotating shaft 100 arranged on an electric toothbrush, the rotating shaft 100 is provided with a journal 110, a shaft body 120 and a shaft head 130; The actuator of the electric toothbrush is connected, the shaft body 120 is clamped with the housing of the electric toothbrush, and the shaft head 130 is connected with the brush head of the electric toothbrush.

2 , 3 and 4 , in order to improve the service life of the detachable connection between the electric toothbrush shaft and the brush head, the shaft head 130 is provided with a groove 131 for engaging with the electric toothbrush brush head, A connecting surface 132 and a clamping surface 133 are also opened along the axial end surface of the shaft head 130 . In this embodiment, at least two grooves 131 are formed on the shaft head 130 , and the two grooves 131 are respectively arranged symmetrically along the axis of the shaft head 130 , and the grooves 131 The depth is 0.25mm. The inclined surface connecting the connecting surface 132 and the shaft head 130 is 43.5° to 46.5° with the axis of the shaft head 130; The axis of the 130 is 30°.

2 , 3 and 4 , the connecting surface 132 is provided with a first inclined surface 134 , and the first inclined surface 134 divides the connecting surface 132 into a first connecting surface 135 and a second connecting surface 136 . In this embodiment, the first inclined surface 134 and the second connecting surface 136 are at 30°.

2 , 3 and 4 , the engaging surface 133 is provided with a second inclined surface 137 , which divides the engaging surface 133 into a first engaging surface 138 and a second engaging surface 137 . The second clamping surface 139 is provided with several U-shaped grooves 139' for clamping. In this embodiment, the first engaging surface 138 and the second inclined surface 137 are at 30°. The depth of the U-shaped groove 139' is 0.1 mm.

Referring to FIGS. 2 , 3 and 4 , in order to facilitate the positioning of the electric toothbrush head and the electric toothbrush housing, a limiting step cylinder 140 is further provided between the shaft body 120 and the shaft head 130 .

2, 3 and 4, when the brush head of the electric toothbrush is detachably mounted on the shaft head 130, the groove 131 is engaged with the brush head of the electric toothbrush, and the groove 131 is engaged with the brush head of the electric toothbrush. 131 is easy to assemble and disassemble; the connecting surface 132 and the clamping surface 133 are connected with the brush head of the electric toothbrush to facilitate the rotation of the electric toothbrush brush head, and the clamping surface 133 is used to buffer the electric toothbrush The wear of the electric toothbrush shaft when the brush head swings at high frequency, the U-shaped groove 139' further buffers the axial force damage of the electric toothbrush shaft caused by the high frequency swing of the electric toothbrush brush head, and improves the The service life of the electric toothbrush shaft is improved, thereby improving the service life of the electric toothbrush.

The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be considered that the specific implementation of the present invention is limited to these descriptions. For those of ordinary skill in the technical field to which the present invention pertains, on the premise of not departing from the concept of the present invention, its architectural form can be flexible and changeable, and a series of products can be derived. Just making some simple deductions or substitutions should be regarded as belonging to the scope of patent protection of the present invention determined by the submitted claims.

Claims (8)

1. An electric toothbrush shaft structure, comprising a rotating shaft arranged on an electric toothbrush, wherein the rotating shaft is provided with a journal, a shaft body and a shaft head; the journal and the actuator of the electric toothbrush connection, the shaft body is clamped with the shell of the electric toothbrush, the shaft head is detachably connected with the brush head of the electric toothbrush; the shaft head is provided with a clamp connection with the brush head of the electric toothbrush A connecting surface and a clamping surface are also opened along the end surface of the shaft head, and several U-shaped grooves are arranged on the clamping surface. 2 . The electric toothbrush shaft structure according to claim 1 , wherein at least two grooves are formed on the shaft head, and the two grooves are respectively along the axis of the shaft head. 3 . Symmetrically arranged, the depth of the groove is 0.25mm. 3 . The electric toothbrush shaft structure according to claim 1 , wherein a first inclined surface is provided on the connecting surface, and the first inclined surface divides the connecting surface into a first connecting surface and a second connecting surface. 4 . . 4 . The electric toothbrush shaft structure according to claim 3 , wherein the first inclined surface and the second connecting surface are at 30°. 5 . 5 . The electric toothbrush shaft structure according to claim 1 , wherein a second inclined surface is provided on the clamping surface, and the second inclined surface divides the clamping surface into a first clamping surface and a first clamping surface. 6 . Two clamping surfaces, the U-shaped groove is arranged on the second clamping surface, and the first clamping surface and the second inclined surface are at 30°. 6. The electric toothbrush shaft structure according to claim 5, wherein the depth of the U-shaped groove is 0.1 mm. 7 . The electric toothbrush shaft structure according to claim 1 , wherein a limiting step cylinder is further arranged between the shaft body and the shaft head. 8 . 8 . The electric toothbrush shaft structure according to claim 1 , wherein the inclined surface connecting the connecting surface and the shaft head is at 43.5° to 46.5° with the axis of the shaft head; the clamping surface is 43.5° to 46.5°. The inclined plane connected with the shaft head is at 30° to the axis of the shaft head.