Electric toothbrush shaft

Abstract

The utility model discloses an electric toothbrush shaft, which includes a toothbrush shaft, a groove is provided on the outer wall of the toothbrush shaft, a sealing sleeve is provided on the groove, an extension is provided on one end of the sealing sleeve, and the extension is provided with an inwardly contracted abutment portion, and abuts against the outer wall of the electric toothbrush, and a hollow column is provided on the other end of the sealing sleeve, and a plurality of elastic portions are evenly distributed with a dot as the axis, and act on the outer wall of the toothbrush head. The utility model prevents liquid medium from entering between the toothbrush head and the electric toothbrush during use of the electric toothbrush through the sealing sleeve, thereby improving the sealing between the electric toothbrush and the toothbrush shaft, thereby extending the service life of the electric toothbrush, and making the product have the advantage of good sealing.

Description

Technical Field

[0001] The utility model relates to the technical field of electric toothbrushes, in particular to an electric toothbrush shaft. Background Art

[0002] An electric toothbrush uses the rapid rotation or vibration of the electric motor to produce high-frequency vibrations in the brush head, instantly breaking down the toothpaste into fine foam and deeply cleaning the gaps between teeth. At the same time, the vibration of the bristles can promote blood circulation in the mouth and have a massage effect on the gum tissue. The electric toothbrush shaft is an important component of the electric toothbrush, and the vibration is transmitted to the toothbrush head through the shaft.

[0003] After the existing toothbrush head is inserted into the toothbrush shaft through interference fit, a gap is maintained between the end face of the toothbrush head and the end face of the electric toothbrush. During long-term use, scale will remain on the end faces of the toothbrush head and the electric toothbrush, thereby gradually reducing the sealing between the electric toothbrush and the toothbrush shaft. Therefore, the applicant has made a beneficial design and found a solution to the above problem. The technical solution to be introduced below was produced in this context. Summary of the invention

[0004] The purpose of the utility model is to overcome the shortcomings of the design proposed in the above background technology and provide a product with good sealing performance.

[0005] To solve the above problems, the utility model adopts the following technical solutions.

[0006] An electric toothbrush shaft comprises a toothbrush shaft, the outer wall of the toothbrush shaft is provided with a groove, the groove is sleeved with a sealing sleeve, one end of the sealing sleeve is provided with an extension portion, and is sleeved on the outer wall of the electric toothbrush, the extension portion is provided with an inwardly contracted abutment portion, and abuts against the outer wall of the electric toothbrush, the other end of the sealing sleeve is provided with a hollow column, the hollow column is evenly distributed with a plurality of elastic portions with a dot as the axis, and acts on the outer wall of the toothbrush head.

[0007] Preferably, an O-ring is provided between the sealing sleeve and the groove.

[0008] Preferably, the sealing sleeve maintains a distance from the end surface of the electric toothbrush, and the extending portion maintains a distance from the outer wall of the electric toothbrush.

[0009] Preferably, the groove is arranged to be ring-shaped.

[0010] Preferably, the height of the elastic portion is lower than the height of the hollow column, and the shape of the elastic portion is set to be an arc.

[0011] Beneficial effects:

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model prevents liquid medium from flowing through the outer wall of the electric toothbrush and into the space between the toothbrush shaft and the electric toothbrush by abutting against the outer wall of the electric toothbrush with the abutting part; causes the hollow column to be tightly attached to the outer wall of the toothbrush head by the elastic part, thereby preventing liquid medium from flowing through the toothbrush head and into the space between the toothbrush shaft and the toothbrush head. The above-mentioned design prevents liquid medium from entering between the toothbrush head and the electric toothbrush, thereby improving the sealing between the electric toothbrush and the toothbrush shaft, thereby extending the service life of the electric toothbrush and making the product have the advantage of good sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the side cross-sectional structure of an electric toothbrush shaft of the utility model;

[0015] Figure 2 For this utility model Figure 1 A partial structure enlarged view of detail A of an electric toothbrush shaft;

[0016] Figure 3 This is a schematic structural diagram of a toothbrush shaft of an electric toothbrush shaft of the utility model;

[0017] Figure 4 This is a structural schematic diagram of a sealing sleeve of an electric toothbrush shaft according to the utility model;

[0018] The corresponding relationship between the illustrations and component names in the figure is as follows:

[0019] Figure numerals: 1. toothbrush shaft; 2. sealing sleeve; 3. O-ring; 4. electric toothbrush; 5. toothbrush head; 11. groove; 21. extension part; 22. interference part; 23. hollow column; 24. elastic part. DETAILED DESCRIPTION

[0020] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "left" and "right" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0022] In the embodiment of the present invention, "and or" is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0023] Reference example Figures 1 to 4 An electric toothbrush shaft comprises a toothbrush shaft 1, the outer wall of the toothbrush shaft 1 is provided with a groove 11, the groove 11 is sleeved with a sealing sleeve 2, one end of the sealing sleeve 2 is provided with an extension portion 21, and is sleeved on the outer wall of the electric toothbrush 4, the extension portion 21 is provided with an inwardly contracted abutment portion 22, and abuts against the outer wall of the electric toothbrush 4, the other end of the sealing sleeve 2 is provided with a hollow column 23, the hollow column 23 is evenly distributed with a plurality of elastic portions 24 with a dot as the axis, and acts on the outer wall of the toothbrush head 5, abutting against the electric toothbrush 4 through the abutment portion 22. The outer wall of the electric toothbrush 4 is prevented from flowing through the outer wall of the electric toothbrush 4 and into the space between the toothbrush shaft 1 and the electric toothbrush 4; the elastic part 24 acts on the outer wall of the toothbrush head 5, so that the hollow column 23 is closely attached to the outer wall of the toothbrush head 5, thereby preventing the liquid medium from flowing through the toothbrush head 5 and entering between the toothbrush shaft 1 and the toothbrush head 5. The above design prevents the liquid medium from entering between the toothbrush head 5 and the electric toothbrush 4, thereby improving the sealing between the electric toothbrush 4 and the toothbrush shaft 1, thereby extending the service life of the electric toothbrush 4;

[0024] It is worth mentioning that an O-ring 3 is provided between the sealing sleeve 2 and the groove 11, and the O-ring 3 improves the connection sealing performance between the sealing sleeve 2 and the groove 11, so that a relatively sealed space is formed between the sealing sleeve 2 and the abutting portion 22, preventing external humid air or liquid medium from entering therein, and further improving the sealing performance between the toothbrush shaft 1 and the electric toothbrush 4;

[0025] It is worth mentioning that the sealing sleeve 2 maintains a distance from the end surface of the electric toothbrush 4, and the extension portion 21 maintains a distance from the outer wall of the electric toothbrush 4. The distance reduces the contact area between the sealing sleeve 2 and the electric toothbrush 4, thereby reducing the loss of the vibration frequency of the electric toothbrush 4 transmitted to the toothbrush shaft 1;

[0026] It is worth mentioning that the shape of the groove 11 is set to be annular, and the annular groove 11 is more closely fitted to the O-ring 3 and the sealing sleeve 2;

[0027] It is worth mentioning that the height of the elastic part 24 is lower than the height of the hollow column 23. The shape of the elastic part 24 is set to be arc-shaped. The height of the elastic part 24 is lower than the hollow column 23, which is convenient for the toothbrush head 5 to enter the hollow column 23 first. The hollow column 23 provides a guide for the toothbrush head 5, and then continue to press down to make the toothbrush head 5 enter the elastic part 24.

[0028] The above design scheme can enable the product to achieve the advantage of good sealing performance.

[0029] The above content is a further detailed description of the utility model in combination with specific implementation methods. It cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, without departing from the concept of the utility model, they can also make several simple deductions or substitutions, which should be regarded as belonging to the scope of protection determined by the claims submitted for the utility model.

Claims

1. An electric toothbrush shaft, comprising a toothbrush shaft (1), characterized in that: The outer wall of the toothbrush shaft (1) is provided with a groove (11), the groove (11) is sleeved with a sealing sleeve (2), one end of the sealing sleeve (2) is provided with an extension portion (21) and sleeved on the outer wall of the electric toothbrush (4), the extension portion (21) is provided with an inwardly contracted abutment portion (22) and abuts against the outer wall of the electric toothbrush (4), the other end of the sealing sleeve (2) is provided with a hollow column (23), the hollow column (23) is evenly distributed with a plurality of elastic portions (24) with a dot as the axis, and acts on the outer wall of the toothbrush head (5).

2. The electric toothbrush shaft according to claim 1, characterized in that: An O-type sealing ring (3) is provided between the sealing sleeve (2) and the groove (11).

3. The electric toothbrush shaft according to claim 2, characterized in that: The sealing sleeve (2) maintains a distance from the end surface of the electric toothbrush (4), and the extension portion (21) maintains a distance from the outer wall of the electric toothbrush (4).

4. The electric toothbrush shaft according to claim 3, characterized in that: The groove (11) is arranged to be ring-shaped.

5. The electric toothbrush shaft according to claim 3 or 4, characterized in that: The height of the elastic portion (24) is lower than the height of the hollow column (23), and the shape of the elastic portion (24) is set to be an arc.

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