CN209808609U

CN209808609U - Driving shaft for electric toothbrush

Info

Publication number: CN209808609U
Application number: CN201920236591.0U
Authority: CN
Inventors: 李铎; 徐正飞
Original assignee: Shanghai Yanjing Precision Structure Parts Co Ltd
Current assignee: Shanghai Yanjing Precision Structure Parts Co Ltd
Priority date: 2019-02-25
Filing date: 2019-02-25
Publication date: 2019-12-20
Anticipated expiration: 2029-02-25

Abstract

The utility model discloses a driving shaft for an electric toothbrush, relating to the technical field of precise shaft parts and comprising a shaft body, wherein one end of the shaft body is provided with a straight groove, and the shaft body is of a hollow structure; one end of the shaft body is detachably provided with a connecting buckle, and the straight groove penetrates through the connecting buckle along the radial direction of the shaft body; one end of the shaft body is of an opening structure; the connecting buckle comprises an inserting part which is inserted in the opening at the end part of the shaft body; the plug part is of a U-shaped structure, and the straight groove is formed on the inner side of the plug part. The utility model provides a light in weight grips and feels good, convenient to use, and the longer drive shaft for electric toothbrush of life.

Description

Driving shaft for electric toothbrush

Technical Field

The utility model relates to an accurate axle technical field especially relates to a drive shaft for electric toothbrush.

Background

With the increasing demand for quality of life, daily oral care becomes more and more sophisticated, and many people choose to use electric toothbrushes instead of ordinary toothbrushes. The electric toothbrush can more thoroughly clear dental plaque, reduce gingivitis and gingival bleeding and has obvious oral care effect; the electric toothbrush enables the brush head to generate high-frequency motion, so that the toothpaste is instantly decomposed into fine foam and permeates into gaps between teeth to be cleaned, and the effect of deep cleaning is achieved; meanwhile, the vibration of the bristles can promote the blood circulation of the oral cavity and has a massage effect on gingival tissues. At present, electric toothbrushes on the market can be classified into two categories according to the motion state of a brush head: rotary type and vibration type.

A driving motor and a driving shaft are arranged in an existing vibration type electric toothbrush, the driving motor is connected with the driving shaft through an eccentric wheel, and one end of the driving shaft is provided with a straight groove used for being matched with the eccentric wheel. When the electric toothbrush is used, the driving motor drives the eccentric wheel to rotate, the driving shaft vibrates by utilizing eccentric motion, and the other end of the driving shaft is connected with the toothbrush head, so that the effect of high-frequency swinging of the toothbrush head of the electric toothbrush is achieved.

However, according to the prior art, the driving shaft is usually made of solid metal, so that the driving shaft is relatively heavy, is not easy to hold by a user, is relatively inconvenient to use, and affects the use experience of the user.

SUMMERY OF THE UTILITY MODEL

To the technical problem, the utility model aims at providing a drive shaft for electric toothbrush sets the axis body to hollow structure, improves the convenience that the user gripped and used, guarantees that the user uses experience.

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

a driving shaft for an electric toothbrush comprises a shaft body, wherein one end of the shaft body is provided with a straight groove, and the shaft body is of a hollow structure; the axis body one end can be dismantled and be provided with the connector link, a word groove runs through along the axis body radially and sets up on the connector link.

By adopting the technical scheme, the shaft body is arranged to be a hollow structure, so that the weight of the shaft body is reduced; meanwhile, the end part of the shaft body is provided with the connecting buckle, and the straight groove is formed in the connecting buckle, so that the driving shaft can be stably connected with the eccentric wheel. Through this kind of mode, on the basis that satisfies the transmission demand, reduce the weight of drive shaft to alleviate electric toothbrush's weight, improve the convenience that the user gripped and used, guarantee that the user uses and experiences.

The utility model discloses further set up to: one end of the shaft body is of an opening structure; the connecting buckle comprises an inserting part which is inserted into the opening at the end part of the shaft body; the plug-in connection part is of a U-shaped structure, and the straight groove is formed in the inner side of the plug-in connection part.

Through adopting above-mentioned technical scheme, set the grafting portion to U type structure to establish the grafting portion in the axis body opening, help reducing the volume of drive shaft, not only can improve the convenience of installation, can also indirectly improve electric toothbrush inner structure's compactedness, reduce electric toothbrush's volume.

The utility model discloses further set up to: the end part of one end of the upper opening of the shaft body is also provided with a U-shaped groove in a radial penetrating mode, and the U-shaped groove is opposite to and communicated with the straight groove.

Through adopting above-mentioned technical scheme, set up U type groove on the axis body to with U type groove intercommunication straight line groove, improve the convenience of drive shaft installation.

The utility model discloses further set up to: a plurality of limiting blocks are formed on the inner wall of one end, provided with an opening, of the shaft body in a protruding mode, and the limiting blocks are divided into two groups and are respectively abutted to two side walls in the thickness direction of the insertion part.

Through adopting above-mentioned technical scheme, two sets of stoppers butt grafting portion thickness direction's both sides respectively to whole circumference spacing effect that plays of connector link helps improving the accuracy nature and the stability of connector link installation.

The utility model discloses further set up to: an end plate is vertically arranged on one side, close to the outer side of the shaft body, of the insertion part, and the straight groove penetrates through the end plate along the axial direction of the shaft body; when the inserting part is inserted into the shaft body, the end plate is abutted against the adjacent end face of the shaft body.

Through adopting above-mentioned technical scheme, the end plate is with the adjacent terminal surface butt of axis body to play the spacing effect of axial to the connector link, can further improve the stability and the accuracy nature of connector link installation.

The utility model discloses further set up to: the side wall, away from the shaft body opening, of the insertion part is integrally formed with an extension block, a fastening pin hole is formed in the extension block along the radial direction of the shaft body, penetrates through the side wall of the shaft body, and a fastening pin is arranged in the fastening pin hole in an insertion mode.

Through adopting above-mentioned technical scheme, insert in the fastening pin hole and establish the fastening pin, the fastening pin can further fixed connection buckle to further improve the stability and the accuracy nature of connector link installation.

The utility model discloses further set up to: the extension blocks are arranged on the insertion part at intervals, and the two extension blocks are oppositely arranged in the radial direction of the shaft body.

Through adopting above-mentioned technical scheme, set up two sets of extension pieces, the cooperation corresponds fastening pinhole and fastening pin, can further improve the stability and the accuracy nature of connector link installation.

The utility model discloses further set up to: one side of the end plate close to the shaft body is provided with a magnetic layer for magnetically adsorbing the shaft body.

Through adopting above-mentioned technical scheme, when the staff inserts the axis body opening with grafting portion in, but the adjacent terminal surface of magnetic layer magnetic adsorption axis body prevents that the connector link from droing, makes things convenient for the staff to continue fixed connection and detains.

To sum up, the utility model discloses following beneficial effect has:

1. the shaft body is arranged to be a hollow structure, the connecting buckle is arranged at the opening at one end of the shaft body, and the straight groove is formed in the connecting buckle, so that the weight of the driving shaft is reduced on the basis of meeting the transmission requirement, the weight of the electric toothbrush is indirectly reduced, the convenience of holding and using of a user is improved, and the user experience is guaranteed;

2. the magnetic layer is arranged on the end plate, so that the connecting buckle is prevented from being separated from the shaft body, and the convenience of mounting the connecting buckle is greatly improved; simultaneously, because the connector link can be dismantled, after the connector link damaged, the staff can conveniently change the connector link, indirectly prolongs the life of this drive shaft.

Drawings

Fig. 1 is an axial view of the overall structure of an embodiment of the present invention;

fig. 2 is a schematic illustration of a partial explosion of an embodiment of the present invention;

fig. 3 is an axis measuring view of the shaft body according to an embodiment of the present invention.

Reference numerals: 100. a shaft body; 110. a U-shaped groove; 120. a limiting block; 200. a connecting buckle; 210. a plug-in part; 211. a straight slot; 220. an end plate; 230. an extension block; 231. a fastening pin hole; 300. a magnetic layer; 400. and fastening the pin.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples.

Referring to fig. 1 and 2, a driving shaft for an electric toothbrush includes a shaft body 100, wherein the shaft body 100 may be made of SUS303 stainless steel; the shaft body 100 is a hollow structure, one end of the shaft body is closed, the other end of the shaft body is an open structure, a connecting buckle 200 is inserted and connected, and a straight groove 211 for connecting an eccentric wheel is formed in the connecting buckle 200 in a penetrating mode along the radial direction of the shaft body 100.

Referring to fig. 2, the connection buckle 200 includes an insertion portion 210, and the insertion portion 210 is integrally U-shaped and inserted into an opening at an end of the shaft body 100 along an axial direction of the shaft body 100; the linear groove 211 is formed through the inner side of the insertion portion 210, and an opening side of the linear groove 211 is close to the outer side of the shaft body 100. In order to facilitate the assembly of the electric toothbrush, a U-shaped groove 110 is further formed in the shaft body 100 in a penetrating manner along the radial direction; when the connector link 200 is correctly installed, the U-shaped groove 110 just faces the linear groove 211 and is communicated with the linear groove 211. Meanwhile, an end plate 220 is further formed by bending one side of the insertion part 210 close to the outer side of the shaft body 100, and the cushion plate is perpendicular to the insertion part 210; the linear groove 211 axially penetrates the end plate 220 along the shaft body 100, and divides the end plate 220 into two symmetrical half-plate bodies, and the two half-plate bodies are respectively and vertically fixed on two parts of the insertion part 210. The end plate 220 may be integrally formed in a disk-like structure; when the insertion portion 210 is fully inserted into the opening of the shaft body 100, the end plate 220 will abut against the adjacent end of the shaft body 100, thereby axially positioning the entire connecting buckle 200.

In order to prevent the connecting buckle 200 from falling off from the shaft body 100 during installation, a magnetic layer 300 is further disposed on one side of the end plate 220 close to the shaft body 100, the magnetic layer 300 may be made of a permanent magnet material, and may be fixed on the end plate 220 by bonding or riveting; when the mating part 210 is inserted into the shaft 100, the end plate 220 can magnetically attract the shaft 100 through the magnetic layer 300, so as to prevent the connecting buckle 200 from falling off from the shaft 100.

With reference to fig. 3, in order to further position the connecting buckle 200, a plurality of limiting blocks 120 are formed on the inner wall of the shaft body 100 near the opening end; in this embodiment, the limiting block 120 is provided with four blocks, and each two of the four blocks form a group; when the insertion part 210 is inserted into the opening of the shaft body 100, the two sets of stoppers 120 abut against the two sidewalls of the insertion part 210 in the thickness direction, respectively, thereby positioning the connection buckle 200 in the circumferential direction. Meanwhile, one side of the insertion part 210, which is away from the end plate 220, is also integrally formed with extension blocks 230, and two groups of the extension blocks 230 can be arranged on the insertion part 210 at intervals; the two extending blocks 230 are disposed opposite to each other in the radial direction of the shaft body 100, and both the extending blocks 230 abut against the inner wall of the shaft body 100. The two extending blocks 230 are provided with fastening pin holes 231 through the opening, the fastening pin holes 231 radially penetrate through the corresponding extending blocks 230 and the shaft body 100 along the shaft body 100, the fastening pins 400 are correspondingly arranged in the two fastening pin holes 231 in a penetrating manner, the fastening pins 400 are in interference fit with the fastening pin holes 231, and therefore the connecting buckle 200 is further fixed, and the installation stability of the connecting buckle 200 is guaranteed.

The working principle of the embodiment is as follows: the shaft body 100 is arranged into a hollow structure, a connecting buckle 200 is inserted and arranged at an opening at one end of the shaft body 100, and a straight groove 211 is arranged on the connecting buckle 200; thereby, on the basis that satisfies the transmission demand, reduce the weight of drive shaft to indirectly reduce electric toothbrush's weight, improve the convenience that the user gripped and used, guarantee user experience.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. A driving shaft for an electric toothbrush comprises a shaft body (100), wherein one end of the shaft body (100) is provided with a straight groove (211), and the driving shaft is characterized in that the shaft body (100) is of a hollow structure; the axis body (100) one end can be dismantled and be provided with connector link (200), a word groove (211) runs through along the radial of axis body (100) and sets up on connector link (200).

2. The driving shaft for electric toothbrush according to claim 1, wherein the shaft body (100) has an open structure at one end; the connecting buckle (200) comprises an inserting part (210), and the inserting part (210) is inserted into an opening at the end part of the shaft body (100); the plug-in part (210) is of a U-shaped structure, and the straight groove (211) is formed in the inner side of the plug-in part (210).

3. The driving shaft for the electric toothbrush according to claim 2, wherein the end of the shaft body (100) at the open end is further provided with a U-shaped groove (110) along the radial direction, and the U-shaped groove (110) is opposite to and communicated with the straight groove (211).

4. The driving shaft for an electric toothbrush according to claim 2, wherein a plurality of stoppers (120) are formed on the inner wall of the open end of the shaft body (100) in a protruding manner, and each of the stoppers (120) is divided into two groups and is respectively abutted against both side walls in the thickness direction of the insertion part (210).

5. The driving shaft for the electric toothbrush according to claim 2, wherein an end plate (220) is vertically disposed on one side of the insertion part (210) adjacent to the outer side of the shaft body (100), and the linear groove (211) penetrates through the end plate (220) along the axial direction of the shaft body (100); when the insertion part (210) is inserted into the shaft body (100), the end plate (220) is abutted against the adjacent end surface of the shaft body (100).

6. The driving shaft for the electric toothbrush according to claim 2 or 5, wherein an extension block (230) is integrally formed on a side wall of the insertion part (210) away from the opening of the shaft body (100), a fastening pin hole (231) is formed in the extension block (230) along the radial direction of the shaft body (100), the fastening pin hole (231) penetrates through the side wall of the shaft body (100), and a fastening pin (400) is inserted into the fastening pin hole (231).

7. The driving shaft for an electric toothbrush according to claim 6, wherein the extension blocks (230) are spaced apart from each other by two sets on the insertion portion (210), and the two extension blocks (230) are disposed opposite to each other in a radial direction of the shaft body (100).

8. The driving shaft for an electric toothbrush according to claim 5, wherein a magnetic layer (300) for magnetically attracting the shaft body (100) is provided on a side of the end plate (220) adjacent to the shaft body (100).