WO2019196197A1

WO2019196197A1 - Housing structure for electric toothbrush

Info

Publication number: WO2019196197A1
Application number: PCT/CN2018/091498
Authority: WO
Inventors: 陈科
Original assignee: 陈科
Priority date: 2018-04-11
Filing date: 2018-06-15
Publication date: 2019-10-17
Also published as: CN209220552U

Abstract

Disclosed is a housing structure for an electric toothbrush. The housing structure for an electric toothbrush comprises a grip portion (1) having a middle protrusion to facilitate holding, and a connecting portion (2) located on an upper side of the grip portion. The grip portion (1) is a rotary body, and the grip portion (1) comprises a first holding half (11) extending from top to bottom and having a gradually increasing outer diameter, and a second holding half (12) extending downwards from a lower end of the first holding half (11) and having a gradually decreasing outer diameter. The grip portion (1) of the housing structure for an electric toothbrush has smaller upper and lower ends and a protruding middle portion, so that an electric toothbrush can be held more stably when used for brushing teeth.

Description

Shell structure of electric toothbrush

Technical field

The utility model relates to a toothbrush, in particular to a shell structure of an electric toothbrush.

Background technique

Electric toothbrushes Compared with ordinary toothbrushes, electric toothbrushes can completely remove plaque, reduce gingivitis, periodontal disease and bleeding gums. At present, traditional electric toothbrushes on the market use hand-held toothbrush handles. Brushing teeth, when children use this electric toothbrush, because the child's small palm and insufficient grip force can cause the child to hold the electric toothbrush in the hand stably when brushing the teeth, affecting the brushing effect and the electric toothbrush falling will cause the electric toothbrush to be damaged. .

technical problem

It is an object of the present invention to provide a housing structure for an electric toothbrush that is easy for a child to hold.

Technical solution

The utility model is realized by the following technical solutions: a housing structure of an electric toothbrush is provided, which comprises a hand grip protruding in the middle for easy gripping and a connecting portion on the upper side of the grip portion, the grip portion a rotating body, the hand grip includes a first grip half extending from the top to the bottom and an outer diameter gradually increasing, and a second extending downward from the lower end of the first grip half and gradually decreasing in outer diameter Hold the half.

As a further improvement of the above technical solution, the connecting portion includes a first rod portion on the upper side and a second rod portion on the lower side and having an outer diameter gradually increasing.

As a further improvement of the above technical solution, the connecting portion further includes a garnish between the second rod portion and the first grip half, the outer diameter of the garnish gradually increases, the The outer surface of the two rod portions, the outer surface of the decorative member, and the outer surface of the first grip half are sequentially continuous curved surfaces.

As a further improvement of the above technical solution, an outer surface of the second rod portion, an outer surface of the garnish, an outer surface of the first grip half, and an outer surface of the second grip half Both are continuous in curvature.

As a further improvement of the above technical solution, the bottom of the second grip half is a flat surface.

As a further improvement of the above technical solution, the first lower end of the first grip half has an outer diameter of 40 mm to 60 mm; the height of the grip portion is greater than 35 mm; the first of the first grip half The outer diameter of the upper end is 15 mm to 25 mm; the diameter of the bottom of the second grip half is 15 mm to 25 mm; the first vertical height of the first grip half is 25 mm to 35 mm; The ratio of the second vertical height of the two grip halves is 10 mm to 20 mm.

As a further improvement of the above technical solution, the first lower end outer diameter of the first grip half is greater than 40 mm.

As a further improvement of the above technical solution, the height of the grip portion is greater than 40 mm.

As a further improvement of the above technical solution, the ratio of the outer diameter of the first upper end of the first grip half to the outer diameter of the first lower end of the first grip half is 1:2 to 1:2.5.

As a further improvement of the above technical solution, the ratio of the first vertical height of the first grip half to the second vertical height of the second grip half is 1.5:1 to 2:1.

Beneficial effect

The utility model has at least the following advantages: the housing structure of the electric toothbrush of the present invention has small and small ends at the upper and lower ends, and the middle portion is convex, so that the brush holder can be more stably gripped when using the electric toothbrush.

DRAWINGS

1 is an exploded perspective view of an electric toothbrush according to an embodiment of the present invention;

2 is a side elevational view of a housing structure of an electric toothbrush in accordance with an embodiment of the present invention;

3 is a cross-sectional view of an electric toothbrush in accordance with an embodiment of the present invention;

4 is a top plan view of an electric toothbrush according to an embodiment of the present invention;

5 is a side elevational view of a charging base and an outer cover of an electric toothbrush in accordance with an embodiment of the present invention.

Embodiments of the invention

The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. example. The components of the embodiments of the invention, which are generally described and illustrated in the figures herein, may be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention are not intended to limit the scope of the claimed All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

In this paper, the definition of a rotating body is as follows: a curved surface formed by a plane curve rotating around a fixed line in the plane in which it is located is called a rotating surface; the fixed line is called the axis of the rotating body; the geometric body enclosed by the closed rotating surface Called a rotating body.

In the description of the present invention, the concept of "continuous" is applied to curves and surfaces. In practical applications, CAD (Chinese Computer Aided Design) system provides three types of continuity concepts: 1) continuous position, or CO continuous . 2) Tangent continuous, or C1 continuous. 3) The curvature is continuous, or C2 continuous. Contact with an edge, you can see the obvious contact angle, called position continuity or CO continuous. Not only contact but also tangential, it is called continuous tangency or C1 continuous. C1 continuously mathematically defines the smooth connection between surfaces, but it does not satisfactorily meet people's sensory requirements. This is due to the sudden change in the radius of curvature of the two curved surfaces adjacent to each other. In addition to satisfying the continuous CO and C1, it also has the same radius of curvature at the junction, which is called continuous curvature or C2 continuous.

As shown in FIG. 2, the housing structure of the electric toothbrush includes a grip portion 1 which is convex in the middle for easy grip, and a connecting portion 2 on the upper side of the grip portion 1, the grip portion 1 being a rotating body, the hand grip 1 includes a first grip half 11 extending from the top to the bottom and having an outer diameter gradually increasing, and a downward extending from the lower end of the first grip half 11 and having an outer diameter gradually decreasing The second grip half 12 is. A brush head 3 for brushing is connected to the upper side of the connecting portion 2.

The electric toothbrush 100 of the present invention is mainly applied to children, and the hand grip 1 is used for human body holding, and the holding manner thereof can be held from bottom to top, and the bottom of the hand grip 1 is located at the palm of the hand, or The hand grip 1 is convexly held like a normal toothbrush, so that the contact area of the hand with the electric toothbrush 100 is larger when the hand is held, so that the child can hold the electric toothbrush 100 while using the electric toothbrush 100, and does not Drop or slip.

The specific size of the first holding half 11 and the second holding half 12 can be adjusted according to the age range of the applicable object, and the specific adjustment manner is adjusted according to the size of the palm of the user of different age groups, so that the user The palm of the hand can hold the hand 1 in a wrapped grip in the palm of the hand. Wherein "wrapped" means that when the user holds the electric toothbrush 100, the whole or at least 3/4 of the grip 1 is located in the hand.

The connecting portion 2 includes a first stem portion on the upper side and a second stem portion 23 on the lower side and having an outer diameter gradually increasing. A motor bracket 24 for connecting to the motor 4 is disposed in the second rod portion 23, and the connecting portion 2 vibrates under the driving of the motor 4 to cause the brush head 3 to vibrate to achieve automatic brushing.

The first stem portion includes a first stem portion body 22 and a head connecting portion 21 on the upper side of the first stem portion body 22 for connection with the brush head portion 3.

The connecting portion 2 further includes a garnish 25 between the second rod portion 23 and the first grip half portion 11, the outer diameter of the garnish 25 is gradually increased, and the second rod portion The outer surface of the 23, the outer surface of the garnish 25, and the outer surface of the first grip half 11 are sequentially continuous curved surfaces. The outer surface of the second rod portion 23, the outer surface of the garnish 25, the outer surface of the first grip half 11, and the outer surface of the second grip half 12 are continuously continuous in curvature .

The decorative member 25 is a transparent decorative member 25, and the decorative member 25 is provided with an LED lamp 26 for displaying status information of the electric toothbrush 100, such as remaining battery capacity, state of charge, and the like.

The first lower end outer diameter R2 of the first grip half 11 is 40 mm to 60 mm; the height of the grip portion 1 is greater than 35 mm; and the first upper end outer diameter R1 of the first grip half 11 15 mm to 25 mm; the bottom 121 of the second grip half 12 has a diameter of 15 mm to 25 mm; the first vertical height H1 of the first grip half 11 is 25 mm to 35 mm; The second vertical height H2 of the second grip half 12 is 10 mm to 20 mm. The height of the grip 1 is the sum of the first vertical height H1 and the second vertical height H2.

Specifically, the first lower end outer diameter R2 of the first grip half 11 is 50 mm, the height of the hand grip 1 is 43 mm; the first upper end of the first grip half 11 is outside the first upper end The diameter R1 is 21 mm; the diameter of the bottom of the second grip half 12 is 18 mm, the diameter of the bottom of the second grip half 12 and the outer diameter of the second lower end of the second grip half 12 R4 is the same; the first vertical height H1 of the first grip half 11 is 27 mm; and the second vertical height H2 of the second grip half 12 is 16 mm.

The ratio of the first upper end outer diameter R1 of the first grip half 11 to the first lower end outer diameter R2 of the first grip half 11 is 1:2 to 1:2.5. In this embodiment, the ratio of the first upper end outer diameter R1 of the first grip half 11 to the first lower end outer diameter R2 of the first grip half 11 is 1:2.4. Specifically, the ratio of the first upper end outer diameter R1 of the first grip half 11 to the first middle outer diameter R5 of the first grip half 11 is 1:1.9, that is, the first grip half 11 The outer diameter gradually increases downward, and the curvature from the upper end to the middle portion is larger than the curvature from the middle portion to the lower end portion.

The ratio of the second upper end outer diameter R3 of the second grip half 12 to the second lower end outer diameter R4 of the second grip half 12 is 2:1 to 3:1. In the present embodiment, the second upper end outer diameter R3 of the second grip half 12 is the same as the first lower end outer diameter R2 of the first grip half 11 . The ratio of the second upper end outer diameter R3 of the second grip half 12 to the second lower end outer diameter R4 of the second grip half 12 is 2.7:1. The bottom portion 121 of the second grip half 12 is a flat surface for enabling the electric toothbrush 100 to be placed smoothly.

The ratio of the first vertical height H1 of the first grip half 11 to the second vertical height H2 of the second grip half 12 is 1.5:1 to 2:1. In this embodiment, the ratio of the first vertical height H1 of the first grip half 11 to the second vertical height H2 of the second grip half 12 is 1.7:1.

As shown in FIG. 3, the ratio of the vertical height L1 of the brush head connecting portion 21 to the vertical height L2 of the main body of the first rod portion main body 22 is 1:1.5 to 1:2. The ratio of the vertical height L2 of the main body of the first stem portion main body 22 to the vertical height L3 of the grip of the second stem portion 23 is 1.5:1 to 2:1.

In the present embodiment, the vertical height L1 of the brush head connecting portion 21, the vertical height L2 of the main body of the first rod portion main body 22, and the vertical height L3 of the grip portion of the second rod portion 23 are 1:2: 1.

The ratio of the upper end outer diameter R6 of the second rod portion 23 to the outer diameter R7 of the lower end of the decorative member (25) is 1:2 to 1:3. The lower end outer diameter R7 of the garnish (25) is the same as the first upper end outer diameter R1 of the first grip half 11. In the present embodiment, the ratio of the upper end outer diameter R6 of the second rod portion 23 to the lower end outer diameter R7 of the decorative member (25) is 1:2.7. The ratio of the outer diameter of the upper and lower ends of the brush head connecting portion 21 to the first rod portion main body 22 is 1:1.1, that is, the shape and size of the brush head connecting portion 21 and the first rod portion main body 22 are substantially maintained. Changed rod shape.

Referring to FIG. 1, the electric toothbrush 100 further includes an electric motor 4, a battery 5 and a PCB board 6, and the electric motor 4, the battery 5 and the PCB board 6 are both mounted in the grip 1.

The battery 5 is a rechargeable battery 5, and the electric toothbrush 100 in the present invention charges the battery 5 by wireless charging. The battery 5 is provided with two pieces, which are respectively located on both sides of the motor 4, thereby making the distribution of the mass of the electric toothbrush 100 more uniform, so that the structure of the electric toothbrush 100 is more stable.

The drive shaft of the motor 4 is inserted into the motor bracket 24 in the second rod portion 23, and the motor 4 is further provided with a motor waterproof ring 41.

A switch circuit board 7 is disposed under the motor 4, and a switch button is disposed at a position corresponding to the bottom of the switch circuit board 7 at the bottom of the second grip half 12.

The outer sleeve of the hand grip 1 is sleeved with a silicone sleeve 8 . The silicone sleeve 8 disposed outside the casing can increase the friction between the electric toothbrush 100 and the hand, prevent the electric toothbrush 100 from slipping off, and the soft silicone sleeve 8 makes the electric toothbrush 100 feel better and is more suitable for children. .

The electric toothbrush 100 further includes a wireless receiving coil 9 for charging a battery, the wireless receiving coil 9 being a toroidal coil, and the wireless receiving coil 9 being located outside the third dividing plate and the fourth dividing plate. The wireless receiving coil 9 is wound between charging, and the wireless receiving coil 9 is electrically connected to a battery, which is located inside the ring-shaped wireless receiving coil 9.

As shown in FIG. 4, the brush head 3 includes a first mounting surface 31, a second mounting surface 32, and a third mounting surface 33 for mounting bristles.

The joint of the first mounting surface 31 and the second mounting surface 32, the joint of the second mounting surface 32 and the third mounting surface 33, and the joint of the first mounting surface 31 and the third mounting surface 33 are provided with bristles . Thereby, the brush head can be cleaned 360 degrees, and the brush head can be extended into the entrance cavity in any direction, which is more suitable for children. It can be understood that the brush head 3 can also be provided in two, four or the like mounting faces, as long as the brush head 3 capable of achieving the above functions or functions can be applied to the present invention.

As shown in FIG. 5, the electric toothbrush 100 further includes a charging base 200 for placing the electric toothbrush 100 and charging the electric toothbrush 100, and a housing 300 matching the charging base 200. The cover 300 is a transparent cover 300, and not only can the electric toothbrush 100 be dustproof, but also the state of the electric toothbrush 100 can be observed through the cover 300, such as whether the charge is full, the remaining amount of the electric toothbrush 100, and the like. A charging coil is disposed in the charging base 200, and the charging coil cooperates with the wireless receiving coil 9 to charge the battery 5.

In the description of the present invention, it is to be understood that the terms "first", "second", etc. are used for the purpose of description only and are not to be construed as indicating or implying a relative importance. The specific meanings of the above terms in the present invention can be understood by those skilled in the art in a specific case. Further, in the description of the present invention, the meaning of "a plurality" is two or more unless otherwise specified.

While the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art Variations, the scope of the invention is defined by the claims and their equivalents.

Claims

A housing structure of an electric toothbrush, comprising: a grip portion (1) protruding in the middle for easy gripping; and a connecting portion (2) on an upper side of the grip portion (1), the grip The part (1) is a rotating body, and the hand grip (1) includes a first grip half (11) extending from the top to the bottom and having an outer diameter gradually increasing, and from the first grip half (11) A second grip half (12) having a lower end extending downward and having an outer diameter gradually decreasing.
A housing structure for an electric toothbrush according to claim 1, wherein said connecting portion (2) includes a first stem portion on the upper side and a second stem portion on the lower side and having an outer diameter gradually increasing ( twenty three).
The housing structure of the electric toothbrush according to claim 2, wherein the connecting portion (2) further comprises a second rod portion (23) and the first grip half portion (11) Between the decorative members (25), the outer diameter of the decorative member (25) is gradually increased, the outer surface of the second rod portion (23), the outer surface of the decorative member (25), and the first The outer surface of the grip half (11) is in turn a continuous curved surface.
The housing structure of the electric toothbrush according to claim 3, wherein an outer surface of the second rod portion (23), an outer surface of the decorative member (25), and the first grip half portion The outer surface of (11) and the outer surface of the second grip half (12) are continuous in curvature.
The housing structure of an electric toothbrush according to claim 3, characterized in that the bottom portion (121) of the second grip half (12) is a flat surface.
The housing structure of the electric toothbrush according to claim 5, wherein the first lower end outer diameter (R2) of the first grip half (11) is 40 mm to 60 mm; 1) the height is greater than 35 mm; the first upper end outer diameter (R1) of the first grip half (11) is 15 mm to 25 mm; the bottom of the second grip half (12) (121 a diameter of 15 mm to 25 mm; a first vertical height (H1) of the first grip half (11) of 25 mm to 35 mm; a second vertical height of the second grip half (12) The ratio of (H2) is 10 mm to 20 mm.
The housing structure of an electric toothbrush according to any one of claims 1 to 6, characterized in that the first lower end outer diameter (R2) of the first grip half (11) is larger than 40 mm.
A housing structure for an electric toothbrush according to any of claims 1-6, characterized in that the height of the grip (1) is greater than 40 mm.
The housing structure of the electric toothbrush according to any one of claims 1 to 6, characterized in that the first upper end outer diameter (R1) of the first grip half (11) and the first grip half The first lower outer diameter (R2) ratio of (11) is 1:2 to 1:2.5.
The housing structure of the electric toothbrush according to any one of claims 1 to 6, characterized in that the first vertical height (H1) of the first grip half (11) and the second grip half ( 12) The ratio of the second vertical height (H2) is from 1.5:1 to 2:1.