CN201064496Y - Electric toothbrush head - Google Patents

Abstract

The utility model discloses an electric toothbrush head, which comprises a toothbrush head body, a motor and other driving and transmission devices, and is characterized in that the electric toothbrush head also comprises at least one group of brush seats implanted with bristles, a support frame, a crankshaft, a fixed shaft and a revolving shaft; the brush head body is provided with a pit, one end of the fixed shaft is fixed in a hole arranged on the support frame, and the other end of the fixed shaft is fixed in a hole arranged at the front end of the brush head body; the middle part of the brush seat is provided with a long waist-shaped through hole which is sleeved on the fixed shaft and can slide relative to the fixed shaft; an upper through hole for penetrating the crankshaft is further formed between the back of the brush seat and the long waist-shaped through hole; one end of the crankshaft is connected with the rotating shaft, and the other end of the crankshaft penetrates through a through hole in the upper part of the brush seat and is connected with a hole in the front end of the brush head body. The toothbrush has the advantages that the toothbrush can be used as a smooth brush by hands, the tooth cleaning effect can be improved, and the reverse brushing can be avoided, so that teeth and gum are protected.

Description

An electric toothbrush head

technical field

The utility model relates to a toothbrush, in particular to an electric toothbrush head capable of simulating the brushing action of human hands.

Background technique

Toothbrush is already a necessary daily necessities for people; with the development of science and technology, people have invented electric toothbrushes in order to improve the effect of brushing teeth, improve the efficiency and speed of brushing teeth, so far there have been many kinds of electric toothbrushes, and there are also many related products. patent; it can be seen that many people are paying attention to and promoting the development of electric toothbrushes, and everyone agrees that this is a very huge market; but it is not so popular at the market level. One reason is that its price is much higher than that of ordinary toothbrushes. Another reason is that its effect has been questioned by many experts.

Now many dental health experts agree that brushing teeth vertically along the interdental direction is the most effective and least damaging to the gums and teeth; however, this direction is not the habitual direction of people’s hand movements, so most people still use the customary sawing method Horizontal brush.

At present, the existing electric toothbrush mainly contains the following methods:

1. Rotary type: One or more circular brush discs rotate or swing in one direction or two directions; the brush disc rotates at high speed, which will cause great wear on the tooth surface and make it difficult to penetrate deep into the gap between the teeth. This is most questioned by experts, but because of its manufacturing More convenient, mature technology and the most widely used.

2. Horizontal reciprocating type: simulates the customary brushing method, the structure is relatively complicated, and the application effect is poor.

3. Vertical reciprocating type: There are two types: linear reciprocating type and arc-shaped reciprocating type, and there are different methods of single group and multiple groups. The disadvantage is that brushing along the way and brushing against the reverse will cause greater damage to the gums.

4. Vertical roller brush type: a larger size is required because of the need to rotate, and the bristles will become shorter when the size is small

5. The elasticity is affected, so that the deep crevice cannot be brushed. In order to prevent the brush from touching the skin opposite the teeth in the oral cavity, a protective cover has to be added, which further increases the size and makes the oral cavity uncomfortable.

6. Vibration type: Vibration is generated when brushing teeth, which can play an auxiliary cleaning role. There have been many patent documents published, but actual products are rarely seen.

7. Sonic vibration type: Ultrasonic vibration is generated when brushing teeth, which is expensive and difficult to popularize in a short period of time.

8. Active water flow type: active water flow, the system is complicated, the price is expensive, and the effect cannot be significantly improved.

9. Composite type: combine the above two or more functions at the same time.

Because the life of the bristles is shorter than that of the body, usually the electric toothbrush head can be replaced.

The power unit of existing electric toothbrush generally comprises:

Batteries: Mostly two AA (No. 5) batteries, one AA battery and one No. 2 battery. With the popularization of rechargeable batteries, there are also many built-in rechargeable batteries.

Motor: Most of them are DC small motors.

Deceleration: Some use multi-stage gear reduction, which is low in cost, but takes up a lot of space; there are also planetary gear reductions, which are compact in layout, but higher in cost; and some are directly driven by motors.

Power output: usually output rotational torque, eccentric swing torque, axial reciprocating force, lateral swing force, etc.

Electric toothbrush heads in the prior art cannot realize the working mode of simulating the smooth brushing of human hands. The process of manual brushing, taking brushing the upper teeth as an example: when the toothbrush moves up, the bristles do not touch the teeth or gums. After the toothbrush is in place, the toothbrush leans against the gums and teeth, and brushes downward at the same time. After the brush is in place, the toothbrush moves back to avoid The teeth and gums move up at the same time, and the toothbrush leans against the gums and teeth after they are in place; in this continuous cycle, the travel path of the toothbrush is basically an ellipse, and the brushing of the lower teeth or the inner side is just reversed, because the toothbrush leaves during the return journey The teeth and gums are protected, so there will be no reverse brushing, thereby reducing damage to the gums. This is why many experts recommend smooth brushing.

Utility model content

The purpose of this utility model is to provide a kind of electric toothbrush head that can simulate manual brushing, and the size is similar to the common toothbrush in the prior art, thereby improving the cleaning effect when brushing teeth, protecting the gums, and increasing the speed of brushing teeth.

形的曲轴、一固定轴及一回转轴；所述的刷头本体上设有一凹坑，所述的支持架、曲轴、固定轴、回转轴及刷座均设置在该凹坑内；该凹坑前端设有两个分别用以固定所述曲轴和固定轴的一端的孔，其后端分别设有一用于将该电动牙刷头套紧在电动牙刷本体上和容纳回转轴的通孔；所述回转轴的一端设有一用于与电动牙刷本体的传动装置联接用以传递扭矩的结构，其另一端联接曲轴传递扭矩；所述固定轴的一端固定于支持架所设的孔中，另一端固定于所述刷头本体前端所设的孔中；所述刷座的中部设有一长腰形通孔，并通过该通孔套设于所述固定轴上，该通孔可与固定轴相对滑动；所述刷座背部与所述长腰形通孔之间还设有用来穿设所述曲轴的一上部通孔；所述曲轴的一端联接所述的回转轴，其另一端穿过所述刷座上部通孔联接在所述刷头本体前端的孔中。In order to achieve the above object, the technical solution provided by the utility model is: an electric toothbrush head, which includes a drive and transmission device such as a brush head body, a motor, etc., and is characterized in that it also includes at least one set of brushes with bristles seat, a support frame, a contour

shaped crankshaft, a fixed shaft and a rotary shaft; the brush head body is provided with a pit, and the support frame, crankshaft, fixed shaft, rotary shaft and brush holder are all arranged in the pit; the pit The front end is provided with two holes for respectively fixing the crankshaft and one end of the fixed shaft, and the rear end is respectively provided with a through hole for tightening the electric toothbrush head on the electric toothbrush body and accommodating the rotary shaft; One end of the rotating shaft is provided with a structure for connecting with the transmission device of the electric toothbrush body to transmit torque, and the other end is connected to the crankshaft to transmit torque; one end of the fixed shaft is fixed in the hole provided by the support frame, and the other end is fixed in the In the hole provided at the front end of the brush head body; a long waist-shaped through hole is provided in the middle of the brush holder, and is sleeved on the fixed shaft through the through hole, and the through hole can slide relative to the fixed shaft; There is also an upper through hole for passing through the crankshaft between the back of the brush seat and the long waist-shaped through hole; one end of the crankshaft is connected to the rotary shaft, and the other end passes through the brush The through hole on the upper part of the seat is connected to the hole at the front end of the brush head body.

The utility model drives the brush base to swing through the rotation of the crankshaft, and the brush base also extends and retracts while swinging up and down, so that the bristles have a process of extending and retracting while moving up and down, thereby simulating the brushing action of human hands.

形，所述各刷座依次串联、分别套设在每段曲轴的偏心段上。The aforementioned electric toothbrush head is characterized in that it includes two or more sets of brush holders with bristles, and the profile of the crankshaft corresponds to the brush holders in two or more sections connected end to end.

shape, the brush holders are sequentially connected in series and respectively sleeved on the eccentric section of each section of the crankshaft.

The aforementioned electric toothbrush head is characterized in that the crankshaft is an integrally bent metal member.

The aforementioned electric toothbrush head is characterized in that one end of the rotary shaft is used to connect with the transmission device of the electric toothbrush body for torque transmission, and is a protrusion provided on its end face; the shape of the protrusion can be One of the "ten", "Y", or "D" shapes.

The utility model has the advantages that: the utility model can simulate the hand brushing action through the forward and backward stretching and left and right swing of the brush seat arranged on the crankshaft, and its size is similar to the electric toothbrush head of the common toothbrush in the prior art, and can be compared with the existing The toothbrush handle connection in the technology can improve the cleaning effect when brushing teeth, protect the gums, and increase the speed of brushing teeth.

Description of drawings

Fig. 1 is a schematic diagram of the mechanism movement of the utility model.

Fig. 2 is a top view of the utility model embodiment.

Fig. 3 is a sectional view of A-A in Fig. 2 .

Fig. 4 is an enlarged sectional view of B-B in Fig. 2 .

FIG. 5 is a front view of the crankshaft 16 in FIG. 3 .

FIG. 6 is an enlarged left view of FIG. 5 .

FIG. 7 is a front view of the rotary shaft 17 in FIG. 3 .

FIG. 8 is an enlarged right view of FIG. 7 .

FIG. 9 is an enlarged left view of FIG. 7 .

Below in conjunction with accompanying drawing and embodiment, the utility model is further described.

Detailed ways

Embodiment: Provide an electric toothbrush head with three sets of independent brush holders, which can simulate the brushing action of human hands.

Referring to Fig. 1, this figure is the motion principle schematic diagram of the present utility model. The working principle of the utility model is as follows: 1 is a crank, 2 is a guide rod, and 3 is a slider. The crank 1 is an active part, which makes a circular motion around point A, and one end of the guide rod 2 is hinged at point B with crank 1. Sliding relative to the slider 3, the slider 3 can rotate around the fulcrum C. When the crank 1 makes a circular motion, the movement track of the other end point D of the guide rod 2 is shown by the double-dot dash line on the right of the figure. If the guide rod 2 is a bristle, point D is the working end of the bristle, which moves left and right at the same time in the process of moving up and down in a working cycle; if it is used on an electric toothbrush when brushing teeth, the bristle is stretched out, and the bristle is recovered during the return journey , so that reverse brushing can be avoided, and the direction in which point D moves along the track can also be changed by changing the direction of motion of crank 1.

形曲轴16，所述各刷座11、12、13依次串联、分别套设在每段曲轴16的偏心段上；其还包括一固定轴14及一回转轴17；该刷头本体18上设有一凹坑20，所述的支持架15、曲轴16、固定轴14、刷座11、12、13均设置在该凹坑20内；该凹坑20前端设有两个分别用以固定所述曲轴16和固定轴14的一端的孔，其后端分别设有一用于将该电动牙刷头套紧在电动牙刷本体23上和容纳回转轴17的通孔；所述回转轴17的一端设有一用于与电动牙刷本体23的传动装置联接用以传递扭矩的结构19，其另一端联接曲轴16传递扭矩；所述固定轴14的一端固定于支持架15所设的孔中，另一端固定于所述刷头本体18前端所设的孔中；所述刷座11、12、13的中部均设有一长腰形通孔21，并通过该通孔21套设于所述固定轴14上，该通孔21可与固定轴14相对滑动；所述刷座11、12、13背部与所述长腰形通孔21之间均设有用来穿设所述曲轴16的一上部通孔22；所述曲轴16的一端卡入回转轴17中，其另一端穿过所述刷座11、12、13上部通孔22联接在所述刷头本体18前端的孔中；本实用新型通过曲轴16回旋带动刷座11、12、13摆动，各刷座在上下摆动的同时还会伸出和收回，从而使刷毛在上下运动的同时有一个伸出和收回的过程，从而模拟人手的顺刷动作。Referring to Fig. 2 to Fig. 9, the utility model embodiment provides an electric toothbrush head, which includes a brush head body 18, motor and other driving and transmission devices, and it also includes three groups of brush holders planted with bristles, respectively 11, 12, 13, a support frame 15, a contour corresponding to each brush seat is three sections connected end to end

Shaped crankshaft 16, described brush holders 11, 12, 13 are sequentially connected in series and respectively sleeved on the eccentric section of each crankshaft 16; it also includes a fixed shaft 14 and a rotary shaft 17; the brush head body 18 is provided with There is a pit 20, the support frame 15, the crankshaft 16, the fixed shaft 14, the brush holders 11, 12, 13 are all set in the pit 20; the front end of the pit 20 is provided with two The holes at one end of the crankshaft 16 and the fixed shaft 14 are respectively provided with a through hole for the electric toothbrush head to be fastened on the electric toothbrush body 23 and accommodate the rotary shaft 17; one end of the rotary shaft 17 is provided with a In the structure 19 that is connected with the transmission device of the electric toothbrush body 23 in order to transmit torque, its other end is connected to the crankshaft 16 to transmit torque; one end of the fixed shaft 14 is fixed in the hole provided by the support frame 15, and the other end is fixed in the provided In the hole provided at the front end of the brush head body 18; the middle part of the brush holder 11, 12, 13 is provided with a long waist-shaped through hole 21, and is sleeved on the fixed shaft 14 through the through hole 21, the The through hole 21 can slide relative to the fixed shaft 14; an upper through hole 22 for piercing the crankshaft 16 is provided between the backs of the brush holders 11, 12, 13 and the long waist-shaped through hole 21; One end of the crankshaft 16 is snapped into the rotary shaft 17, and the other end passes through the through hole 22 on the upper part of the brush holder 11, 12, 13 and is connected to the hole at the front end of the brush head body 18; the utility model rotates through the crankshaft 16 Drive the brush holders 11, 12, 13 to swing, and each brush holder will extend and retract while swinging up and down, so that the bristles have a process of extending and retracting while moving up and down, thereby simulating the brushing action of the human hand.

As shown in Figure 3, the shaft sleeve connecting the brush rod part can enclose the rotary shaft 17 and drive it to rotate. The long hole of the seat slides relative to the fixed shaft 14, so that each brush seat has the action of stretching out and retracting while swinging, so that the bristles stretch out when brushing, and retract to avoid the air when returning, reducing reverse brushing and protecting teeth and teeth. gums.

Referring to Fig. 4, when the crankshaft 16 rotates around its axis, it drives the brush holders to perform compound motion, and the fixed shaft 14 pierced through each brush holder can slide relatively, and the motion trajectory of the bristle ends will be similar to that shown in Fig. 1, but different The trajectory of the bristles at different positions will be different, but they will all stretch out and retract while swinging left and right, so that the effect similar to that of manual brushing can be achieved; by changing the direction of motion of the crankshaft 16, the movement of the bristles along the trajectory can also be changed. direction, so as to adapt to the different requirements of the upper and lower teeth and the inner and outer sides. When the utility model adopts a single group of brush holders and it is in the return journey, because the inner wall of the oral cavity will press the toothbrush to the teeth or gums, the bristles cannot escape and form a reverse brush. Therefore, this embodiment adopts three sets of brush holders connected in series 11, 12, 13, and let them stagger a certain angle, in the present embodiment, they are mutually staggered by 15°; when one of the groups of brush holders is in the return state, there are other groups of brush holders in contact with teeth or gums, so that this One group of brush holders avoids the air during the return trip; similarly, in other embodiments, multiple groups of brush holders in series can also be used, and when the number of brush holder groups is more, it drives the bristles to brush teeth and return in turn. The effect of smooth brushing is better; at the same time, another advantage of this structure is that it can make the load of the motor more uniform; the feeling in the mouth will also be more comfortable.

5 and 6, the aforementioned crankshaft 16 is an integrally bent metal member.

Referring to Fig. 7, Fig. 8 and Fig. 9, one end of the said rotary shaft 17 is used to connect with the transmission device of the electric toothbrush body in order to transmit the structure 19 of torque, is a protrusion 24 that is provided with on its end face; The shape is "ten" in this embodiment, and may be "Y" or "D" in other embodiments; the other end of the rotary shaft 17 is provided with a hole to clamp the crankshaft 16 .

Other electric toothbrush heads obtained with the same or similar structure as the above-mentioned embodiments of the utility model are all within the protection scope of the utility model.

Claims (4)

1. electric toothbrush head, it comprises driving and actuating devices such as a brush body, motor, it is characterized in that, it comprises that also at least one group of brush holder, a support, a profile that is implanted with bristle is bent axle, a fixed axis and the single-revolution axle of " several " shape; Described brush body is provided with a pit, and described support, bent axle, fixed axis, gyroaxis and brush holder all are arranged in this pit; This pit front end is provided with two respectively in order to the hole of an end of fixed crankshaft and fixed axis, and its rear end is provided with one and is used for the through hole that is locked this electric toothbrush head on the electric toothbrush main body and holds gyroaxis; One end of described gyroaxis is provided with one and is used for connecting in order to transmit the structure of moment of torsion with the actuating device of electric toothbrush main body, and its other end blocks bent axle and transmits moment of torsion; One end of described fixed axis is fixed in the set hole of support, and the other end is fixed in the set hole of described brush body front end; Described brush holder is provided with a long waist shaped through hole, and is sheathed on the described fixed axis by this through hole, and this through hole can slide relatively with axle; Be with described bent axle in another hole of described brush holder; One end of this bent axle snaps in described gyroaxis, and its other end inserts in the hole of described brush body front end, and eccentric segment inserts in the hole set on the brush holder in the middle of this bent axle.

2. electric toothbrush head according to claim 1, it is characterized in that, it comprises two groups or the brush holder that is implanted with bristle of organizing more, and the corresponding brush holder of described bent axle profile is two sections or end to end " several " shape of multistage, and described each brush holder is connected successively, is set in respectively on the eccentric segment of every section bent axle.

3. electric toothbrush head according to claim 2 is characterized in that, described bent axle is the hardware by the one bending.

4. electric toothbrush head according to claim 1 and 2 is characterized in that, an end of described gyroaxis is used for connecting in order to transmit the structure of moment of torsion with the actuating device of electric toothbrush main body, is a projection that is provided with at its end face; This protruding shape can be ten, one of Y or D shape.

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