CN212234761U

CN212234761U - Vibration shaft

Info

Publication number: CN212234761U
Application number: CN202020417140.XU
Authority: CN
Inventors: 邓程辉; 张纪勇
Original assignee: Zhuhai Bailongma Technology Co ltd
Current assignee: Zhuhai Bailongma Technology Co ltd
Priority date: 2020-03-27
Filing date: 2020-03-27
Publication date: 2020-12-29
Anticipated expiration: 2030-03-27

Abstract

The utility model relates to a toothbrush field of making, concretely relates to vibrations axle. The vibration shaft comprises a shaft body and a positioning part; two ends of the shaft body are respectively used for being connected with a toothbrush head and a toothbrush handle; a first containing cavity for containing the whole vibration motor is formed in the shaft body; the positioning part is connected with a shell of the vibration motor, and the vibration motor is fixedly arranged in the first containing cavity. Through setting up whole vibrations motor to the vibrations axle in, and the toothbrush head is covered again and is established at the vibrations epaxially, whole vibrations motor also is located the toothbrush head promptly to make the vibrations power concentrate on the toothbrush head, reduced the vibrations loss, improved vibrations effect.

Description

Vibration shaft

Technical Field

The utility model relates to a toothbrush field of making, concretely relates to vibrations axle.

Background

In recent years, with the increasing living standard of people, the large environment of consumption upgrading in the market is formed. Many consumers no longer seek cost performance when purchasing functional products such as toothbrushes, but rather purchase products that provide a cleaner use experience.

It is known that the electric toothbrush cleans teeth by vibrating the motor core rapidly so that the brush head generates high frequency vibration. In conventional electric toothbrushes, the motor is mounted within the toothbrush handle. One end of the metal transmission shaft is in transmission connection with the output end of the motor, and the other end of the metal transmission shaft extends out of the toothbrush handle and is inserted into the toothbrush head, so that power is transmitted to the toothbrush head. The multi-stage transmission structure can generate larger vibration loss, thereby causing the vibration at the toothbrush head to be weakened.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a vibrations axle to can produce the problem of great vibrations loss among the solution prior art.

The technical scheme adopted by the utility model for solving the technical problems is to provide a vibration shaft which is used in an electric toothbrush and comprises a shaft body and a positioning part; two ends of the shaft body are respectively used for being connected with a toothbrush head and a toothbrush handle; a first containing cavity for containing the whole vibration motor is formed in the shaft body; the positioning part is connected with a shell of the vibration motor, and the vibration motor is fixedly arranged in the first containing cavity.

The utility model provides a pair of vibrations axle is through setting up whole shock dynamo to the vibrations axle in, and the toothbrush head is covered again and is established at the vibrations epaxially, whole shock dynamo also is located the toothbrush head promptly to make the vibrations power concentrated on the toothbrush head, reduced the vibrations loss, improved vibrations effect.

In some embodiments, a limiting protrusion for limiting the position of the vibration motor is arranged in the first cavity; the positioning part drives the shell of the vibration motor to abut against the limiting bulge.

In some embodiments, a plurality of ribs are arranged on the wall body of the first cavity; the end, far away from the opening of the first cavity, of the reinforcing rib is provided with the limiting bulge.

In some embodiments, the positioning part comprises a top column and a limiting seat arranged at the bottom end of the top column; the top column is inserted in the first containing cavity and abuts against the vibration motor; the limiting seat abuts against the tail end of the shaft body.

In some embodiments, the outer diameter of the retaining socket is greater than the outer diameter of the top post; and a second containing cavity matched with the limiting seat is arranged at the bottom end of the shaft body.

In some embodiments, the bottom end of the limiting seat is turned outwards to form a U-shaped flange; after the top column is inserted into the first containing cavity, the flange abuts against the tail end of the shaft body.

In some embodiments, a plurality of axially-opened accommodating grooves for accommodating electric wires of the vibration motor are uniformly distributed on the outer edge of the top column; and the upper surface of the limiting seat is provided with an avoiding hole at a position corresponding to the accommodating groove.

Drawings

The invention will be further explained with reference to the drawings and examples, wherein:

fig. 1 is a schematic perspective view of an electric toothbrush according to an embodiment of the present invention;

FIG. 2 is a schematic sectional view of an electric toothbrush according to an embodiment of the present invention;

fig. 3 is an exploded view of the vibration shaft according to the embodiment of the present invention;

fig. 4 is a schematic perspective view of a shaft body according to an embodiment of the present invention;

fig. 5 is a schematic cross-sectional view of a shaft body according to an embodiment of the present invention;

FIG. 6 is an enlarged partial schematic view of the location A in FIG. 5;

fig. 7 is a schematic perspective view of a positioning portion according to an embodiment of the present invention;

fig. 8 is a schematic cross-sectional structure view of a positioning portion according to an embodiment of the present invention;

fig. 9 is a schematic perspective view of a vibration motor according to an embodiment of the present invention;

figure 10 is a perspective view of a toothbrush head according to an embodiment of the invention.

The reference numerals are explained below:

1-vibration axis; 11-a shaft body; 111-a first volume; 112-a limit protrusion; 113-reinforcing ribs; 114-a notch; 115-a second cavity; 116-a stop collar; 12-a positioning section; 121-top column; 122-a limit seat; 123-a flange; 124-clamping block; 125-a receiving groove; 126-avoidance hole;

2-toothbrush head; 3-vibrating the motor; 31-an electrical wire; 4-toothbrush handle; 41-a housing; 42-a baffle plate; 5-waterproof ring.

Detailed Description

Exemplary embodiments that embody features and advantages of the present invention will be described in detail in the following description. It is to be understood that the invention is capable of other and different embodiments and its several details are capable of modification without departing from the scope of the invention, and that the description and drawings are to be regarded as illustrative in nature and not as restrictive.

Referring to fig. 1 to 3, the present embodiment provides a vibration shaft 1 for use in an electric toothbrush. Referring to fig. 4 to 8 together, the vibration shaft 1 includes a shaft body 11 and a positioning portion 12. Wherein, the upper end of axis body 11 is used for being connected with toothbrush head 2 is detachable, and the lower extreme is used for being connected with toothbrush handle 4. As shown in fig. 5, a first cavity 111 for accommodating the entire vibration motor 3 is formed in the shaft body 11. The positioning portion 12 is connected to the housing of the vibration motor 3, and the vibration motor 3 is fixed in the first cavity by abutting, clamping, or glue filling.

Through setting up whole vibrations motor 3 to vibrations axle 1 in, and toothbrush head 2 covers again and establishes on vibrations axle 1, whole vibrations motor 3 also is located toothbrush head 2 promptly to make the vibrations power concentrate on toothbrush head 2, reduced the vibrations loss, improved vibrations effect.

Specifically, as shown in fig. 6, a limiting protrusion 112 for limiting the position of the vibration motor 3 is disposed in the first cavity 111 of the present embodiment. After the positioning portion 12 is inserted into the first cavity 111, the housing of the vibration motor 3 is driven to abut against the limiting protrusion 112, and the housing of the vibration motor 3 is in interference fit with the first cavity 111, so that the vibration motor 3 is effectively fixed.

Further, referring to fig. 5, a plurality of ribs 113 are disposed on a wall body in the first cavity 111, so that the axial strength of the shaft body 11 can be effectively improved. The end of the reinforcing rib 113 far away from the opening of the first cavity 111 is provided with a hook-shaped limiting protrusion 112.

Referring to fig. 7 and 8, the positioning portion 12 of the present embodiment includes a top pillar 121 and a limiting seat 122 disposed at a bottom end of the top pillar 121. The top pillar 121 may be inserted into the first cavity 111, and the limiting seat 122 abuts against the end of the shaft 11.

Referring to fig. 5 and 8 together, one end of the shaft body 11 of the present embodiment is cylindrical, and the other end is tapered. The contour of the limiting seat 122 is step-shaped. The outer diameter of the stopper seat 122 is larger than that of the top pillar 121. The bottom end of the shaft body 11 is provided with a second cavity 115 adapted to the limiting seat 122.

With continued reference to fig. 8, the bottom of the retainer 122 is turned outwardly to form a U-shaped rib 123. As shown in fig. 2, after the top post 121 is inserted into the first receiving cavity 111, the rib 123 abuts against the end of the shaft body 11.

Referring to fig. 3, 4 and 7 together, a notch 114 is formed at the bottom of the shaft 11. The rib 123 is recessed to form a latch 124. The notch 114 matches with the latch 124, and the latch 124 can be inserted into the notch 114, so as to prevent the relative rotation between the positioning portion 12 and the shaft body 11.

Referring to fig. 7 and 9, the outer edge of the top pillar 121 is uniformly provided with a receiving groove 125 formed along the axial direction for receiving the electric wire 31 of the vibration motor 3, and the receiving groove 125 is in a strip shape. The upper surface of the stopper 122 is provided with a relief hole 126 at a position corresponding to the receiving groove 125. Therefore, the electric wire 31 connected to the vibration motor 3 can be neatly accommodated in the stopper seat 122. In this embodiment, four receiving grooves 125 are formed on the outer edge of the top pillar 121, so that the cross section of the top pillar 121 is in a cross shape. Four avoiding holes 126 are formed on the limiting seat 122. It is understood that the number of the receiving grooves 125 and the avoiding holes 126 may be appropriately adjusted according to the actual assembly requirement.

Referring to fig. 2 and 4, the outer surface of the shaft body 11 is further provided with a limiting ring 116 for limiting the moving stroke of the toothbrush head 2 on the shaft body 11 and simultaneously limiting the displacement of the waterproof ring 5. The waterproof ring 5 is made of elastic material, and two ends of the waterproof ring 5 are respectively connected with the wall body at the position of the limiting ring 116 and the second cavity 115.

Referring to fig. 1 and 2, the present invention further provides an electric toothbrush, which comprises the vibration shaft 1, a toothbrush head 2, a vibration motor 3, a toothbrush handle 4 and a waterproof ring 5.

Specifically, referring to fig. 10, a cavity matched with the shape of the vibration shaft 1 is formed in the toothbrush head 2, and the cavity is tapered. The vibration motor 3 is a small motor and is arranged in the first cavity 111 of the shaft body 11 to drive the vibration shaft 1 and the toothbrush head 2 to vibrate together.

Still referring to fig. 1 and 2, the toothbrush handle 4 includes a housing 41, a holder (not shown) secured within the housing 41, and an electrical control assembly (not shown) mounted on the holder. Wherein, the vibration shaft 1 is inserted into the cavity of the toothbrush head 2 after passing through the through hole at the upper end of the housing 41.

The waterproof ring 5 is step-shaped, and is sleeved on the vibration shaft 1, and one end of the waterproof ring abuts against the limiting ring 116, and the other end abuts against the wall body at the second cavity 115. The baffle 42 at the upper end of the shell 41 is in interference fit with the waterproof ring 5. The baffle 42 is bent inward against the side of the waterproof ring 5 and the step. The waterproof ring 5 can effectively prevent water and can also slow down the vibration sense of the toothbrush handle 4.

The fixing frame is located inside the housing 41 and abuts against the limiting seat 122. The electric control assembly comprises an electric control board, and a rechargeable battery, a key, an indicator light and the like which are respectively and electrically connected with the electric control board. The rechargeable battery and the electronic control board are both mounted on the fixing frame, and the keys and the indicator light are exposed from the surface of the casing 41. The vibration motor 3 is also electrically connected with the electric control board, so that the start and stop of the electric toothbrush can be controlled through the keys.

While the present invention has been described with reference to the exemplary embodiments described above, it is understood that the terms used are words of description and illustration, rather than words of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims

1. A vibration shaft is used in an electric toothbrush and is characterized by comprising a shaft body and a positioning part; two ends of the shaft body are respectively used for being connected with a toothbrush head and a toothbrush handle; a first containing cavity for containing the whole vibration motor is formed in the shaft body; the positioning part is connected with a shell of the vibration motor, and the vibration motor is fixedly arranged in the first containing cavity.

2. The shock shaft of claim 1, wherein a limiting protrusion for limiting the position of the shock motor is arranged in the first cavity; the positioning part drives the shell of the vibration motor to abut against the limiting bulge.

3. The vibration shaft according to claim 2 wherein the wall of the first cavity is provided with a plurality of ribs; the end, far away from the opening of the first cavity, of the reinforcing rib is provided with the limiting bulge.

4. The shock shaft of claim 2, wherein the locating part comprises a top pillar and a limiting seat arranged at the bottom end of the top pillar; the top column is inserted in the first containing cavity and abuts against the vibration motor; the limiting seat abuts against the tail end of the shaft body.

5. The shock shaft of claim 4, wherein the outer diameter of the restraining seat is greater than the outer diameter of the top post; and a second containing cavity matched with the limiting seat is arranged at the bottom end of the shaft body.

6. The shock shaft of claim 5, wherein the bottom end of the limiting seat is turned outwards to form a U-shaped flange; after the top column is inserted into the first containing cavity, the flange abuts against the tail end of the shaft body.

7. The vibration shaft according to claim 5, wherein a plurality of axially-opened accommodating grooves for accommodating electric wires of the vibration motor are uniformly distributed on the outer edge of the top pillar; and the upper surface of the limiting seat is provided with an avoiding hole at a position corresponding to the accommodating groove.