CN218920132U - Waterproof sealing ring for motor shaft of electric toothbrush - Google Patents
Waterproof sealing ring for motor shaft of electric toothbrush Download PDFInfo
- Publication number
- CN218920132U CN218920132U CN202223612469.XU CN202223612469U CN218920132U CN 218920132 U CN218920132 U CN 218920132U CN 202223612469 U CN202223612469 U CN 202223612469U CN 218920132 U CN218920132 U CN 218920132U
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- motor shaft
- butt joint
- mounting ring
- shaft sleeve
- joint part
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Abstract
The utility model relates to a motor shaft sealing waterproof ring of an electric toothbrush, which comprises a mounting ring, wherein one end of the mounting ring is provided with a hollow cylindrical butt joint part for butt joint of a toothbrush head, one end of the butt joint part, which is away from the mounting ring, is provided with an opening, and the outer diameter of the butt joint part is smaller than that of the mounting ring; the inside of the mounting ring is provided with a shaft sleeve sleeved with a fixed motor shaft, the shaft sleeve is fixed with the inner end surface of the butt joint part, and the inner hole of the shaft sleeve is opposite to the opening; the two-layer structure is used, wherein the shaft sleeve is an inner layer, the shaft sleeve is used for tightly sleeving and fixing the motor shaft of the motor, the contact area between the shaft sleeve and the motor shaft is larger, the mounting ring and the butt joint part are outer layers, the shape during butt joint assembly is matched, the changeable space of the size and shape is larger, meanwhile, when the motor shaft is installed in the shaft sleeve, the spring is compressed to the limit, and after the mounting, the spring applies a downward force to the motor shaft, so that the upper inner wall of the clamping groove of the motor shaft can downwards abut against the tight sealing ring to carry out additional waterproof protection beyond the size fit.
Description
Technical Field
The utility model relates to the technical field of sealing rings, in particular to a motor shaft sealing waterproof ring of an electric toothbrush.
Background
The electric toothbrush is a novel tooth brushing tool, and when the electric toothbrush works, the toothbrush head is driven to vibrate by the motor, and a sealing waterproof ring is usually required to be arranged on a motor shaft of the motor to prevent water from flowing backwards along the motor shaft to cause water inflow damage of the motor; the existing sealing waterproof ring is usually provided with a single-layer conical sleeve sleeved on a motor shaft, the contact area between the conical sleeve and the motor shaft is relatively small, the tightness of an assembly part is realized by means of size fit, no additional sealing treatment is performed, and meanwhile, the outer diameter of a part corresponding to the motor shaft is also limited greatly, so that the applicability of the sealing waterproof ring in butt joint with a toothbrush head is affected.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a motor shaft sealing waterproof ring of an electric toothbrush aiming at the defects in the prior art.
The technical scheme adopted for solving the technical problems is as follows:
the electric toothbrush motor shaft sealing waterproof ring comprises a mounting ring, wherein one end of the mounting ring is provided with a hollow cylindrical butt joint part for butt joint of a toothbrush head, one end of the butt joint part, which is away from the mounting ring, is provided with an opening, and the outer diameter of the butt joint part is smaller than that of the mounting ring; a shaft sleeve sleeved with a fixed motor shaft is arranged in the mounting ring, the shaft sleeve is fixed with the inner end face of the butt joint part, and an inner hole of the shaft sleeve is opposite to the opening; the inner wall of the middle part of the inner hole of the shaft sleeve is provided with an annular clamping protrusion matched with a concave groove on the motor shaft, the upper end of the annular clamping protrusion is provided with an annular sealing gasket, the lower end of the annular clamping protrusion is coaxially provided with a spring, the inner diameter of the spring is the same as that of the annular clamping protrusion, and when the motor shaft is installed in the shaft sleeve, the spring is compressed to the limit.
The utility model relates to a waterproof sealing ring for a motor shaft of an electric toothbrush, wherein annular protrusions are arranged on the outer side surface of a butt joint part.
The utility model discloses a waterproof sealing ring for a motor shaft of an electric toothbrush, wherein a cylindrical guide part is formed at one end of a butt joint part, which is far away from a mounting ring, and an opening is formed on the end surface of the guide part; the external diameter of the guide part is smaller than that of the butt joint part, and the end face of the guide part is a conical surface.
The utility model discloses a waterproof sealing ring for an electric toothbrush motor shaft, wherein the mounting ring, the butt joint part, the guide part and the shaft sleeve are all cylindrical and coaxially arranged.
The utility model discloses a waterproof sealing ring for an electric toothbrush motor shaft, wherein the mounting ring, the butt joint part, the guide part and the shaft sleeve are integrally formed.
The utility model has the beneficial effects that: the two-layer structure of this application is used, wherein the axle sleeve is the inlayer, be used for tightly overlapping to establish the motor shaft of fixed motor, can accomplish great with the area of motor shaft contact, and mount pad and butt joint portion are outer, shape matching when being used for carrying out butt joint assembly, the changeable space of size shape is bigger, simultaneously when the axle sleeve is packed into to the motor shaft, the spring is compressed to the limit, the spring makes the upper inner wall of the draw-in groove of motor shaft can support closely sealing the packing ring downwards for the motor shaft after the installation, carry out the extra waterproof protection outside the size cooperation, thereby the problem that the toper cover of individual layer that adopts at present meets can be solved well, promote product competitiveness.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the present utility model will be further described with reference to the accompanying drawings and embodiments, in which the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained by those skilled in the art without inventive effort:
FIG. 1 is a cross-sectional view of a waterproof sealing ring for a motor shaft of an electric toothbrush in accordance with a preferred embodiment of the present utility model;
fig. 2 is a schematic view of a waterproof sealing ring for a motor shaft of an electric toothbrush according to a preferred embodiment of the present utility model.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the following description will be made in detail with reference to the technical solutions in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by a person skilled in the art without any inventive effort, are intended to be within the scope of the present utility model, based on the embodiments of the present utility model.
Referring to fig. 2, the electric toothbrush motor shaft sealing waterproof ring of the preferred embodiment of the utility model is shown in fig. 1, and comprises a mounting ring 1, wherein one end of the mounting ring 1 is formed with a hollow cylindrical butt joint part 2 for butt joint of a toothbrush head, one end of the butt joint part 2, which is far away from the mounting ring 1, is provided with an opening 22, and the outer diameter of the butt joint part 2 is smaller than that of the mounting ring 1; the inside of the mounting ring 1 is provided with a shaft sleeve 3 sleeved with a fixed motor shaft, the shaft sleeve 3 is fixed with the inner end surface of the butt joint part 2, and the inner hole of the shaft sleeve 3 is opposite to the opening 22; an annular clamping protrusion 30 matched with a concave groove on a motor shaft is arranged on the inner wall of the middle part of an inner hole of the shaft sleeve 3, an annular sealing gasket 31 is arranged at the upper end of the annular clamping protrusion 30, a spring 32 is coaxially arranged at the lower end of the annular clamping protrusion 30, the inner diameter of the spring 32 is the same as that of the annular clamping protrusion 30, and when the motor shaft is installed in the shaft sleeve, the spring 32 is compressed to the limit;
the two-layer structure is applied, wherein the shaft sleeve 3 is an inner layer and is used for tightly sleeving and fixing a motor shaft of the motor, the contact area between the shaft sleeve 3 and the motor shaft is larger (the shaft sleeve 3 does not need to consider the external dimension and can be longer), the mounting ring 1 and the butt joint part 2 are outer layers and are used for matching the shape in the butt joint assembly, the changeable space of the dimension and the shape is larger (the mounting and fixing of the motor shaft do not need to be considered), meanwhile, when the motor shaft is installed in the shaft sleeve, the spring 32 is compressed to the limit, and the spring applies a downward force to the motor shaft after the installation, so that the upper inner wall of a clamping groove of the motor shaft can downwards abut against the tight sealing washer 31 to carry out extra waterproof protection beyond the dimension fit, thereby the problem encountered by the single-layer taper sleeve adopted at present can be well solved, and the product competitiveness is improved;
when the spring 32 is installed, a small amount of glue is adhered to the lower end of the annular clamping protrusion; when the sealing washer 31 is installed, a small amount of glue is adhered to the upper end of the annular clamp protrusion.
Preferably, the outer surface of the abutting portion 2 is provided with an annular protrusion 20 for facilitating the abutting with the toothbrush holder, which is a structural feature of the prior art and will not be described here again.
Preferably, one end of the abutting part 2, which is far away from the mounting ring 1, is provided with a columnar guide part 21, and an opening is arranged on the end surface of the guide part 21; the outer diameter of the guide part 21 is smaller than that of the butt joint part 2, and the end surface of the guide part 21 is a conical surface; the toothbrush holder is convenient to guide by the guide part when being docked with the toothbrush holder.
Preferably, the installation ring 1, the butt joint part 2, the guide part 21 and the shaft sleeve 3 are all cylindrical and coaxially arranged, and the installation ring 1, the butt joint part 2, the guide part 21 and the shaft sleeve 3 are integrally formed, so that the overall strength and the stability are ensured.
It will be understood that modifications and variations will be apparent to those skilled in the art from the foregoing description, and it is intended that all such modifications and variations be included within the scope of the following claims.
Claims (5)
1. The electric toothbrush motor shaft sealing waterproof ring is characterized by comprising a mounting ring, wherein one end of the mounting ring is provided with a hollow cylindrical butt joint part for butt joint of a toothbrush head, one end of the butt joint part, which is away from the mounting ring, is provided with an opening, and the outer diameter of the butt joint part is smaller than that of the mounting ring; a shaft sleeve sleeved with a fixed motor shaft is arranged in the mounting ring, the shaft sleeve is fixed with the inner end face of the butt joint part, and an inner hole of the shaft sleeve is opposite to the opening; the motor shaft is arranged in the shaft sleeve, the inner wall of the middle of the inner hole of the shaft sleeve is provided with an annular clamping protrusion, the upper end of the annular clamping protrusion is provided with an annular sealing gasket, the lower end of the annular clamping protrusion is coaxially provided with a spring, the inner diameter of the spring is the same as that of the annular clamping protrusion, and when the motor shaft is arranged in the shaft sleeve, the spring is compressed to the limit.
2. The waterproof sealing ring for a motor shaft of an electric toothbrush according to claim 1, wherein an outer side surface of the abutting portion is provided with an annular protrusion.
3. The waterproof sealing ring for the motor shaft of the electric toothbrush according to claim 1, wherein a cylindrical guide part is formed at one end of the abutting part, which is far away from the mounting ring, and the opening is arranged on the end face of the guide part; the external diameter of the guide part is smaller than that of the butt joint part, and the end face of the guide part is a conical surface.
4. The waterproof sealing ring for the motor shaft of the electric toothbrush according to claim 3, wherein the mounting ring, the abutting portion, the guide portion and the shaft sleeve are all cylindrical and coaxially arranged.
5. The waterproof sealing ring for a motor shaft of an electric toothbrush according to claim 3, wherein the mounting ring, the abutting portion, the guide portion and the sleeve are integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223612469.XU CN218920132U (en) | 2022-12-30 | 2022-12-30 | Waterproof sealing ring for motor shaft of electric toothbrush |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223612469.XU CN218920132U (en) | 2022-12-30 | 2022-12-30 | Waterproof sealing ring for motor shaft of electric toothbrush |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218920132U true CN218920132U (en) | 2023-04-25 |
Family
ID=86043017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223612469.XU Active CN218920132U (en) | 2022-12-30 | 2022-12-30 | Waterproof sealing ring for motor shaft of electric toothbrush |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218920132U (en) |
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2022
- 2022-12-30 CN CN202223612469.XU patent/CN218920132U/en active Active
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