WO2017133437A1 - 一种双刷头电动牙刷 - Google Patents
一种双刷头电动牙刷 Download PDFInfo
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- WO2017133437A1 WO2017133437A1 PCT/CN2017/071265 CN2017071265W WO2017133437A1 WO 2017133437 A1 WO2017133437 A1 WO 2017133437A1 CN 2017071265 W CN2017071265 W CN 2017071265W WO 2017133437 A1 WO2017133437 A1 WO 2017133437A1
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- WIPO (PCT)
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- brush head
- transmission
- electric toothbrush
- brush
- housing
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/16—Power-driven cleaning or polishing devices
- A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
- A61C17/24—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like rotating continuously
- A61C17/26—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like rotating continuously driven by electric motor
Definitions
- the invention relates to an electric toothbrush, in particular to a double brush head electric toothbrush.
- toothbrushes whether manual or electric, or sonic, have only one toothbrush.
- the head of the toothbrush needs to move up and down, left and right, inside and outside in the mouth, so that the teeth and teeth of each tooth can be effectively cleaned, otherwise the tooth cleaning effect will be affected, and some tooth surfaces or teeth will not be effectively cleaned. .
- two linearly driven "hard rotary transmission rods” are provided on the brush head.
- the two linear drive rods are continuously rotated, so that the motor in the handle can drive the two brush heads to perform a two-way rotary motion.
- the transmission rod is easy to squeeze and rub the gums and teeth to bring discomfort to the user and bring potential risk of injury; Touching the drive rod and teeth can easily cause deformation or even loss of the rod.
- the object of the present invention is to provide a double brush head electric toothbrush according to the deficiencies in the prior art, so as to solve the problem that the external linear transmission rod in the original two-way rotating brush head transmission process is easy to bring to the user. Discomfort problem.
- the technical solution of the present invention is a double brush head electric toothbrush comprising a handle end and a brush head end, the brush head end comprising a hollow casing and a brush head cover connected to the front end of the casing, the casing a rear end is connected to the handle end, the brush head cover is inserted with two roller shafts, and the roller shaft is planted with bristles, wherein the electric toothbrush further comprises two rotary transmission rods, wherein the rotation a driving rod extends into the interior of the casing, a rear end of the rotating transmission rod is connected to the handle end, and a front end of the rotating transmission rod passes through a hole or a slot formed near the surface of the casing of the brush head cover respectively Connected to the corresponding roller shaft of the corresponding brush head end.
- the rotary transmission rod is a transmission flexible shaft made of a flexible material and curvilinearly driven.
- the transmission flexible shaft is a torsion wire or a nylon rope.
- a transmission pair joint respectively coupled with the roller shaft and the handle end is further provided.
- a first positioning piece is disposed between the front end of the transmission flexible shaft and the roller shaft, and a second positioning piece is further disposed between the rear end of the flexible shaft and the handle end, specifically disposed behind the flexible shaft Between the end and the drive sleeve in the handle end.
- a support sleeve is sleeved on the outside of the transmission flexible shaft, and the support sleeve is an elastic sleeve.
- a protective sleeve is also sheathed on the outside of the support sleeve which is pierced from the surface of the casing and connected to the end of the brush head.
- the brush head cover is composed of two integrally formed arcuate brackets, and the front and rear ends of each of the arcuate brackets are provided with a through hole-shaped bush sleeve, and are respectively provided at both ends of the roller brush shaft.
- a soft coating film is further disposed on the left and right ends of the brush head cover, and the coating film forms a semi-enveloping coating on the bristles, wherein the soft coating film is formed on the two The two left and right ends of the arcuate brackets face outward.
- the two arcuate brackets have a connecting portion, and an opening is further formed in a center of the connecting portion, and a front end of the housing is provided with a protrusion, and a front end of the housing is inserted into the connecting portion, the convex portion The snap fits into the opening.
- the handle end and the rear end of the housing are detachably connected, and the transmission connector of the rear end of the flexible shaft that cooperates with the handle end has a rectangular cross section, and the handle end is internally provided with the cross section. Rectangular drive sleeve with a rectangular matching of the drive pair.
- a buckle is further disposed at an edge of the interior of the casing near the bottom end.
- the double brush head electric toothbrush disclosed by the invention realizes a convenient and efficient tooth cleaning service, and perfectly cares for the gums, so that the daily cleaning teeth are more relaxed and comfortable. Specifically, it has the following advantages:
- the bristles are brushed from the gingival sulcus toward the crown, in accordance with the requirements of the Pap brushing method.
- the tangential wrapping of the alveolar can make the inner side of the tooth, the outer side of the tooth, and the chewing surface of the tooth can be simultaneously cleaned, thereby significantly improving the efficiency of brushing and the effect of cleaning teeth, especially the original The inside of the teeth and the teeth are ignored.
- FIG. 1 is a schematic structural view of a double brush head electric toothbrush according to an embodiment of the present invention.
- FIG. 2 is a schematic structural view of a brush head end of a double brush head electric toothbrush disclosed in an embodiment of the present invention.
- FIG. 3 is a schematic view showing the overall structure of a double brush head electric toothbrush according to an embodiment of the present invention.
- FIG. 4 is a schematic structural view of a rotary transmission rod of a double brush head electric toothbrush according to an embodiment of the present invention.
- FIG. 5 is a schematic structural view of a brush head cover of a double brush head electric toothbrush disclosed in an embodiment of the present invention.
- FIG. 6 is a schematic structural view of a front end bearing of a double brush head electric toothbrush according to an embodiment of the present invention.
- FIG. 7 is a schematic structural view of a support sleeve of a double brush head electric toothbrush according to an embodiment of the present invention.
- a double brush head electric toothbrush disclosed in an embodiment of the present invention includes a handle end 1 and a brush head end 2, which are detachably connected.
- the brush head end 2 includes a hollow casing 3 and a brush head cover 4 connected to the front end of the casing 3.
- the rear end of the casing 3 is connected to the handle end 1 and is compatible with the handle end 1
- the brush head cover 4 is inserted with two roller brush shafts 5, and the roller brush shaft 5 and the brush head cover 4 are movably connected to the roller brush shaft 5, and the connection mode is a plug or an interference fit.
- the bristles are planted with a plurality of bristles, and the softness and hardness of the bristles can be set and fabricated according to different tooth cleaning requirements.
- the electric toothbrush further includes two rotating transmission rods 6 connected to the handle at one end.
- the rotation transmission rod 6 penetrates from the rear end of the housing 3 into the interior of the housing 3, and passes through two through holes or slots formed in the surface of the housing 3 adjacent to the brush cover 4 They are respectively connected to the two roller shafts 5 of the corresponding brush head end 2.
- the two rotating transmission rods 6 are respectively subjected to two forces in opposite directions by the transmission module of the handle end 1, so that the two rotating transmission rods 6 are opposite in direction when rotating, and thus the rotation direction of the roller shaft 5 is also reversed, so that
- the bristles on the teeth are simultaneously rolled and cleaned from the gingival sulcus to the crown at the outer side of the tooth and the inner side of the tooth, respectively, or simultaneously rolled and cleaned on the chewing surface and the inner side of the tooth, respectively.
- the outer surface of the tooth and the chewing surface of the tooth are simultaneously rolled and cleaned.
- the bristles on the roller shaft are rolled from the gingival sulcus to the crown when rolling the inner side surface of the tooth or the outer side surface of the tooth.
- the present invention incorporates the rotary transmission rod 6 in the casing 3, on the one hand, avoiding the external transmission rod from easily rubbing and rubbing the gums and the teeth to give the user an uncomfortable feeling.
- the potential risk of injury also makes the overall structure of the toothbrush more beautiful and simpler.
- the invention adopts two brush heads, so that the inner side and the outer side of the tooth can simultaneously clean from the gingival sulcus to the crown, and has good Compliance.
- the double brush head electric mode takes only a shorter time to achieve better cleaning effect, especially on the inner side of the teeth and the teeth, which is more convenient to clean.
- the brush head cover 4 can be made of high-tech silicone material, moderate in hardness and hardness, and can adapt to different groove curvature and tooth shape.
- the pressure on the gums and teeth can be adjusted according to the actual situation. It is especially suitable for teeth wearing plastic braces. More perfect care for gums and enamel.
- the rotary transmission rod 6 can be made into a rigid transmission rod, which is directly obliquely upwardly connected from the inside of the casing 3 to the roller shaft 5, in order to cooperate with the rotation of the transmission rod 6.
- the linear drive, the drive abutment part connected to the transmission rod inside the handle end 1 can be arranged obliquely (either obliquely or obliquely downward), and the roller shaft 5 which is docked with the transmission rod is also inclined obliquely, but the premise It is a linear transmission that can guarantee the force, that is, the drive sleeve in the handle end of the rotary transmission rod is on the same line as the roller shaft and the rotation transmission rod, but is slightly inclined.
- the rotary transmission rod 6 is a transmission flexible shaft made of a flexible material and curvilinearly driven.
- the requirement for the flexible shaft is that it has certain elasticity and is malleable. And the flexibility, the rotational movement force can be transmitted from one end to the other end, and the front end and the rear end of the flexible shaft are respectively provided with transmission pair joints respectively coupled with the roller shaft 5 and the handle end 1 (Fig. 4 In the case of 11 and 12), the cross-sectional area of the transmission pair joint is preferably slightly larger than the cross-sectional area of the flexible shaft.
- the transmission connector of the rear end of the flexible shaft that cooperates with the handle end 1 has a rectangular or square cross section, and the handle end 1 is internally provided with the transmission pair joint having a rectangular or square cross section.
- a rectangular transmission sleeve the transmission sleeve is similar to a groove, the rectangular transmission pair joint can extend into the inside of the rectangular transmission sleeve; and the transmission connection of the front end of the flexible shaft matched with the roller shaft 5
- the cross section of the head is cylindrical, and the cross-sectional area of the transmission pair joint is set to be slightly larger than the cross-sectional area of the rotary transmission rod.
- the transmission flexible shaft is a torsion steel wire, and may also be a nylon rope or other polymer material having related properties.
- the torsion wire may be composed of a single wire or a wire twisted and twisted together, and the torsion wire can gradually transmit the rotational force transmitted from the transmission module in the handle end 1 to the roller shaft 5, and the torsion wire breaks the force.
- the linear conduction mode enables the force to be “curved”, so that the rotary transmission rod 6 does not have to be made into a rigid external linear manner, compared to the original arrangement in which the rotary transmission rod 6 is disposed outside the casing 3,
- the invention provides the rotary transmission rod 6 inside the casing 3, and the transmission of the force is preferably realized by the torsion wire, which avoids the uncomfortable feeling and the inconvenience in use of the original transmission rod externally, and the unsightly condition.
- FIG. 4 is a schematic structural view of a rotary transmission rod of a double-brush electric toothbrush according to an embodiment of the present invention.
- the rotating transmission rod 6 is provided with a first positioning piece 11 between the front end of the rod body and the roller shaft 5, and a second positioning piece 12 is further disposed between the rear end of the rotating transmission rod 6 and the rectangular transmission pair joint.
- the positioning piece has a circular cross section, and its cross-sectional diameter should be larger than its side (its side)
- the diameter, more specifically, the cross-sectional diameter of the first positioning piece 11 is larger than the inner diameter of the rear end bushing of the roller shaft as described below, and the cross-sectional diameter of the second positioning piece 12 is larger than the rear end bushing of the transmission flexible shaft.
- the inner diameter is to prevent the torsion wire from being pulled out from both ends.
- the portion of the rotary drive rod that begins to bend is the portion that is passed through the housing.
- the flexible shaft is rotated by the transmission module of the handle end 1 , and the present invention is further provided with a support sleeve 7 outside the flexible shaft, and the support tube 7 is an elastic sleeve, and each transmission is driven.
- the flexible shaft is sleeved inside the elastic sleeve.
- the support sleeve 7 acts as a wear-resistant protection to prevent the rotary motion of the flexible shaft from damaging the outer casing of the tooth cleaner or harming the user; secondly, it plays a certain supporting role, so that the rotary motion of the flexible shaft is further performed inside the support sleeve.
- the support sleeve 7 is also elastic, and can be restored to its original state whether it is stretched or compressed.
- the support sleeve 7 is preferably made of a tough wire spring tube.
- the shape is as shown in FIG. 7.
- the diameter of the steel wire constituting the spring tube can be set to be small to ensure the elasticity, and the wire spring tube itself has flexibility and elasticity. And scalability.
- the combination of the transmission shaft (torque wire) and the support sleeve (wire spring tube) enables the rotational movement of the transmission shaft to be smoother inside the support sleeve.
- a protective sleeve may be overlaid on the outside of the wire spring tube, or at least in the section which is passed out from the surface of the housing and connected to the end of the brush head.
- the outer part of the wire spring or the torsion wire is also provided with a protective sleeve, and the wire spring tube or the torsion wire of the remaining section is protected inside the casing itself, so the protective sleeve may not be provided, and the protective sleeve is
- the nozzle at one end should be the same size and shape as the hole or groove opened at the front end of the housing, blocking the opening or slot in the housing, and the other end should be bound to the wire spring tube to prevent foreign matter during brushing or The water falls into the housing; the outer protective sleeve can further protect and isolate the safety of the transmission module and the comfort of the external texture.
- the outer protective tube can be made of rubber or silicone or plastic or other similar texture. Material composition.
- the brush head cover 4 is composed of two integrally formed arcuate brackets 41.
- the front and rear ends of each of the arcuate brackets are provided with a through hole-shaped bushing on the roller shaft. Both ends A bearing having a high intermediate low end is provided, and the bearing is just engaged in the through hole of the sleeve, and the two form an active connection.
- the bearing is provided with two, and the two bearings are "I-shaped bearings" as shown in FIG. 6, or one is “I-shaped bearing” and the other is "T-shaped bearing” (near the transmission rod) One end).
- the bearing can rotate around the through hole at both ends of the sleeve, and the function of the sleeve mainly is to limit or prevent the back and forth movement of the roller shaft from affecting the customer experience, and ensure that it can only perform circular motion. More specifically, the aforementioned first positioning piece 11 is disposed on the front side of the rear end bushing of the roller shaft, and the second positioning piece 12 is disposed on the rear side of the rear end bushing of the transmission flexible shaft, and the front side of the rectangular transmission sleeve .
- the two arcuate brackets have a connecting portion 42.
- a circular hole 43 is defined in the center of the connecting portion.
- the joint portion also has an open slot for the housing 3 to pass through.
- the housing 3 is from the housing 3.
- the front end is tapered to the front end of the casing 3, the casing 3 is of a flat shovel type, and a front end of the casing 3 is provided with a circular protrusion 8 into which the front end of the casing 3 is inserted. Inside, the protrusion is engaged in the circular hole, so that the connection of the brush head cover 4 and the housing 3 is stronger.
- the opening is not limited to the circular hole shape in the embodiment, and the size of the protrusion and the size of the circular hole are equal or the size of the protrusion is slightly larger than the size of the circular hole.
- a soft coating film is further disposed on the left and right ends of the brush head cover 4, wherein the soft rubber coating film is formed on the two left and right end portions of the two arcuate brackets facing outward.
- the coating film of the brush head cover 4 is integrally formed with the bracket.
- the brush head cover 4 integrally forms a semi-enclosed coating on each of the roller shafts 5.
- the inner surface of the soft coating film is smooth and curved, and the distance between the soft coating film and the central axis of the roller shaft 5 is exactly equal to or slightly larger than the length of the bristles, which makes the brush head close to the teeth. Due to the barrier of the soft coating film, the bristles can effectively brush the teeth without excessive contact with other parts of the mouth to cause discomfort to the user.
- the brush head cover 4 can be made of a silicone material, which has a good soft texture and a certain toughness.
- the coating film is also made of high-tech silicone material, which is soft and does not easily cause damage to the mouth even if it touches the mouth
- the handle end 1 includes a handle housing, and a surface of the handle housing is provided with a switch.
- the handle housing is internally provided with a transmission module, an electric module and a power supply module (refer to FIG. 3), and the electric module is respectively connected to the transmission module and the power supply module.
- the top end of the transmission module is provided with at least two rotating sleeves, and the rotating sleeve has a rectangular cross section, and corresponds to the rectangular parallelepiped transmission pair connector at the rear end of the outer casing. When the power supply switch is closed, the electric module is driven by the electric module.
- the electric module is further provided with a wireless charging base matched thereto, and the driving module drives the rectangular rotating sleeve to also rotate, thereby driving the rectangular transmission pair joint inserted in the rotating sleeve to rotate, and the force is transmitted to the rolling through the rotating transmission rod.
- Brush shaft 5 This causes the roller shaft 5 to rotate for a circular motion so that the bristles continuously brush the teeth.
- the transmission module includes at least two meshing transmission gears. When the two transmission gears move, they rotate in the opposite direction, so that the two transmission rods rotate in opposite directions, which conforms to the Pap brushing characteristics.
- a buckle (not shown) is further disposed at an edge of the interior of the casing near the bottom end.
- a latching groove is formed at a top end of the handle end to cooperate with the bayonet.
- the invention adopts the double brush head technology, and the inner and outer sides of the teeth can be cleaned by brushing at the same time, which can significantly improve the efficiency of brushing and the effect of tooth cleaning, especially the inner side of the teeth and the teeth which are often neglected.
- the rotary transmission rod 6 in the casing 3, the original external transmission rod is prevented from causing possible damage and discomfort to the oral cavity, and is more beautiful.
- the double brush head toothbrush can be extended to a plurality of brush heads, such as a three-brush head toothbrush or the like.
- the user groups to which the present invention is applicable are as follows:
Landscapes
- Health & Medical Sciences (AREA)
- Dentistry (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Brushes (AREA)
Abstract
一种双刷头电动牙刷，其包括手柄端（1）和刷头端（2），刷头端（2）包括一中空的壳体（3）和与壳体（3）前端相连接的刷头盖（4），壳体（3）后端连接手柄端（1），刷头盖（4）上插接有两个滚刷轴（5），滚刷轴（5）上植有刷毛，其中，还包括有两个旋转传动杆（6），其中，旋转传动杆（6）一端连接手柄端（1），旋转传动杆（6）从壳体（3）后端穿入壳体（3）内部，并从靠近刷头盖（4）的壳体（3）表面开设的孔或槽穿出分别连接至对应的刷头端（2）的滚刷轴（5）上。解决了原有的双向旋转刷头传动过程中的外置的直线传动杆容易给用户带来不适的问题。
Description
本发明涉及一种电动牙刷，特别涉及一种双刷头电动牙刷。
传统的牙刷，不论手动牙刷，或电动牙刷或声波牙刷，都只有一个牙刷头。牙刷头需要在口腔里上下、左右、里外四处移动，才能使得各个牙齿的各牙面和牙缝都得到有效清洁，否则会影响牙齿清洁效果，造成某些牙面或牙缝没有得到有效清洁。
近些年来,双刷头牙刷逐渐在市面上得到了推广,但各有利弊，如法国OObrush欧博莱公司生产了一种基于巴氏速洁刷牙的电动牙刷，该牙刷采用双刷头技术，牙齿内外侧面可以被同时清洗，可以显著提升刷牙的效率和洁齿效果，特别是原来往往被忽略掉的牙齿内侧面和牙缝。此外，良好顺应性的牙刷头，欧博莱灵活机动的牙刷头采用高科技硅胶材料，可以适应不同牙槽弧度和牙齿形状，在牙龈和牙齿上的压力可以根据实际情况进行自我调节，对于佩戴整形牙箍的牙齿尤其适合，这样可以完美的呵护牙龈和牙釉质。
但是，为了给两个双向旋转刷头传动，在刷头上设置有两根直线传动的“硬质旋转传动杆”。在刷牙过程中，这两根直线传动杆不断旋转，使得手柄中的电机能驱动两个刷头做双向旋转运动。在直线传动过程中，由于该两根传动杆外置于牙刷前端，一是刷牙过程中，传动杆容易挤压摩擦牙龈和牙齿给用户带来不适感并带来潜在的伤害风险；二是因传动杆触碰牙龈和牙齿容易造成杆体的变形乃至脱落。
发明内容
本发明的目的是针对现有技术中的不足，提供一种双刷头电动牙刷，以解决原有的双向旋转刷头传动过程中的外置的直线传动杆容易给用户带来
不适的问题。
实现本发明的技术方案是，一种双刷头电动牙刷，包括手柄端和刷头端，所述刷头端包括一中空的壳体和与该壳体前端相连接的刷头盖，壳体后端连接该手柄端，所述刷头盖上插接有两个滚刷轴，滚刷轴上植有刷毛，其中，所述电动牙刷还包括有两个旋转传动杆，其中，所述旋转传动杆伸入所述壳体内部，所述旋转传动杆的后端连接所述手柄端,所述旋转传动杆的前端从靠近刷头盖的所述壳体表面开设的孔或槽穿出分别连接至对应的所述刷头端的所述滚刷轴上。
进一步地，所述旋转传动杆为采用柔性材料制成、且可曲线传动的传动软轴。
优选地，所述传动软轴为扭力钢丝或为尼龙绳。
进一步地，在所述传动软轴的前后两端还设有分别与所述滚刷轴和手柄端配合连接的传动对接头。
进一步地，在所述传动软轴前端与滚刷轴之间设有一第一定位片，在所述软轴后端与手柄端之间还设有一第二定位片，具体是设在软轴后端与手柄端内的传动套之间。
进一步地，在所述传动软轴的外部还套有支撑套管，所述支撑套管为弹性套管。
进一步地，至少在从壳体表面穿出并连接至刷头端的该段所述支撑套管的外部还套设有保护套管。
进一步地，所述刷头盖由两个一体成型的弓形支架组成，各个所述弓形支架的前、后两端设有一通孔状的轴套，在所述滚刷轴的两端各设有一个两端高中间低的轴承，所述轴承刚好卡合在该轴套的通孔内并可绕该通孔旋转。
进一步地，在所述刷头盖的左右两端还设有软性包覆膜，所述包覆膜对所述刷毛形成半包围式包覆，其中，该软性包覆膜形成于该两个弓形支架朝外的两个左右端部。
进一步地，两个所述弓形支架具有一连接部，在该连接部的中央还开设有一开孔，所述壳体前端设有一凸起，所述壳体前端插入所述连接部内，所述凸起卡合在所述开孔内。
进一步地，所述手柄端和壳体后端为可拆卸连接，与所述手柄端相配合的所述软轴后端的传动连接头的截面呈矩形，所述手柄端内部设有与该截面呈矩形的所述传动对接头相配合的矩形传动套。
进一步地，在所述壳体内部靠近底端的边缘处还设有一卡扣。
与现有技术相比，本发明所公开的一种双刷头电动牙刷，实现一种便捷高效的牙齿清洁服务，完美呵护牙龈，使得日常洁齿更加轻松舒适。具体有以下优点：
1)取消原有的在刷头外壳外面设置的“硬质旋转传动杆”，通过采用设置在外壳内部的软轴传动，避免了原有的传动杆带来的不适感和使用中的不便。
2)清洗牙齿外侧面和牙齿内侧面时，刷毛从牙龈沟向牙冠方向拂刷，符合巴氏刷牙法的要求。
3)采用两个或以上刷头，对牙槽形成切向包裹，使得牙齿内侧面、牙齿外侧面、牙齿咀嚼面可以被同时清洗，从而显著提升刷牙的效率和洁齿效果，特别是原来往往被忽略掉的牙齿内侧和牙缝。
图1为本发明实施例所公开的一种双刷头电动牙刷的结构示意图。
图2本发明实施例所公开的一种双刷头电动牙刷的刷头端的结构示意图。
图3为本发明实施例所公开的一种双刷头电动牙刷的整体结构示意图。
图4为本发明实施例所公开的一种双刷头电动牙刷的旋转传动杆的结构示意图。
图5本发明实施例所公开的一种双刷头电动牙刷的刷头盖的结构示意图。
图6为本发明实施例所公开的一种双刷头电动牙刷的前端轴承的一个结构示意图。
图7为本发明实施例所公开的一种双刷头电动牙刷的支撑套管的一个结构示意图。
下面将结合附图，对本发明实施例中的技术方案进行清楚、完整地描述，但不作为对本发明的限定。
参见图1至图3所示，本发明实施例所公开的一种双刷头电动牙刷，包括手柄端1和刷头端2，二者为可拆卸连接。
具体来说，所述刷头端2包括一中空的壳体3和与该壳体3前端相连接的刷头盖4，壳体3后端连接该手柄端1且与该手柄端1为可拆卸连接，连接方式为插接或过盈配合等方式，所述刷头盖4上插接有两个滚刷轴5，滚刷轴5与刷头盖4为活动连接，滚刷轴5上植有若干刷毛，刷毛的软硬程度可根据不同洁齿需求进行布局设定和制作，其中，所述电动牙刷还包括有两个旋转传动杆6，所述旋转传动杆6一端连接所述手柄端1内的传动模块，所述旋转传动杆6从壳体3后端穿入壳体3内部，并从靠近刷头盖4的壳体3表面开设的两个通孔或者开设的槽穿出分别连接至对应的所述刷头端2的两个所述滚刷轴5上。两个旋转传动杆6分别受到手柄端1的传动模块在相反方向的两个力的作用，使得两个旋转传动杆6在转动时方向相反，进而带动滚刷轴5的旋转方向也相反,使得其上的刷毛分别在牙外侧面和牙内侧面同时进行从牙龈沟向牙冠方向的滚动拂刷和清洁,或分别在牙咀嚼面和牙内侧面同时进行滚动拂刷和清洁，或分别在牙外侧面和牙咀嚼面同时进行滚动拂刷和清洁，其中，滚刷轴上的刷毛在滚动拂刷牙内侧面或牙外侧面时，都是进行从牙龈沟向牙冠方向的滚动拂刷。
相比原有的旋转传动杆外置的方式，本发明将旋转传动杆6内置于壳体3中，一方面，避免了外置传动杆容易挤压摩擦牙龈和牙齿给用户带来不适感并带来潜在的伤害风险，也使得牙刷整体结构更美观更简洁；此外，本发明采用了两个刷头，使得牙齿内侧面和外侧面能同时实现从牙龈沟到牙冠的清洁，具有良好的顺应性。相比传统的牙刷，通过双刷头电动模式只需更短的时间达到更优的清洁效果，尤其是牙齿内侧面和牙缝处，清洁更为方便。刷头盖4可采用高科技硅胶材料，软硬适中，可以适应不同压槽弧度和牙齿形状，在牙龈和牙齿上的压力可以根据实际情况进行调节，对于佩戴整形牙箍的牙齿尤其适合，可以更完美的呵护牙龈和牙釉质。
作为本发明一个可选的实施方式,所述旋转传动杆6可以制作成硬质的传动杆,直接从壳体3内部斜向上穿出连接至滚刷轴5，为了配合旋转传动杆6的力的直线传动，在手柄端1内部与传动杆相连的传动对接部分可以斜向设置(斜向上或斜向下均可)，与传动杆对接的滚刷轴5也略斜向倾斜设置，但前提是能保证力的直线传输，也即带动旋转传动杆的手柄端内的传动套与滚刷轴以及旋转传动杆在同一直线上，只不过略微倾斜。
作为本发明一个优选的实施方式，所述旋转传动杆6为采用柔性材料制成、且可曲线传动的传动软轴，对所述软轴的要求是，其具有一定的弹性且具有可延展性和伸缩性，能够将旋转运动力从一端传输到另一端，所述软轴的前端和后端均设有分别与所述滚刷轴5和手柄端1相配合连接的传动对接头(图4中的11和12所示)，所述传动对接头的横截面积优选略大于所述软轴的横截面积。其中，与所述手柄端1相配合的所述软轴后端的传动连接头的截面呈矩形或方形，所述手柄端1内部设有与该截面呈矩形或方形的所述传动对接头相配合的矩形传动套，该传动套类似一个凹槽，该矩形状的传动对接头可伸入至该矩形状的传动套内部；与所述滚刷轴5相配合的所述软轴前端的传动连接头的截面呈圆柱形，传动对接头的横截面积设为略大于旋转传动杆的横截面积较好。
作为本发明一个优选的实施方式，所述传动软轴为扭力钢丝，还可以为尼龙绳或其他具有相关特性的高分子材料。所述扭力钢丝可采用单根或者相互缠绕绞合在一起的钢丝组成，扭力钢丝能够将从手柄端1内的传动模块传送的旋转力逐渐传输到滚刷轴5上，扭力钢丝打破了力的直线传导方式，使得力能够“曲线”传导，这样就不必将旋转传动杆6做成硬质的外置直线方式，相比原有的将旋转传动杆6设于壳体3外面的布置，本发明将旋转传动杆6设于壳体3内部，且优选通过扭力钢丝实现力的传送，避免了原有的传动杆外置带来的不适感和使用中的不便，以及不美观的情况。
参照图4所示，图4为本发明实施例所公开的一种双刷头电动牙刷的旋转传动杆的结构示意图，图中，省去了传动杆上的支撑套管和保护套管。所述旋转传动杆6在杆体的前端与滚刷轴5之间设有第一定位片11，在旋转传动杆6后端与矩形传动对接头之间还设有一第二定位片12。由于传动软轴
(比如扭力钢丝或者尼龙绳)本身在传动力的过程中，由于其本身特质，力会来回传动，会出现“往复伸缩和摆动”现象，以便于力的“反复”传导，而为了防止扭力钢丝被“拉扯”，使其两端不能从手柄端1和刷头端2出来，故设置了两个定位片，该定位片截面呈圆形，其截面直径应大于其侧部(其侧旁)的直径，更具体来说，第一定位片11的截面直径要大于下述所述的滚刷轴后端轴套的内径，第二定位片12的截面直径要大于传动软轴后端轴套的内径，以防止扭力钢丝从两端被拉扯出来。其中，在图5中，该旋转传动杆开始弯曲的那一部分为从壳体穿出的那一部分。
所述软轴在手柄端1的传动模块的带动下将进行旋转运动，本发明在所述软轴外部还套设有支撑套管7，所述支撑管7为弹性套管，每一根传动软轴都套接在一根弹性套管的内部。支撑套管7一方面起到耐磨保护作用，避免软轴的旋转运动损坏洁齿器外壳或伤害用户；二是起到一定支撑作用，使得软轴的旋转运动在支撑套管内部进行得更加顺畅，此外支撑套管7还具有弹性，无论其被拉伸还是压缩后均可以恢复原状。且该支撑套管7优选采用质地坚韧的钢丝弹簧管，形状如图7所示，组成弹簧管的钢丝本身直径可设为较小，以确保其弹性，钢丝弹簧管本身具有可弯曲性、弹性和可伸缩性。传动软轴(扭力钢丝)和支撑套管(钢丝弹簧管)二者相互配合，能够使得该传动软轴的旋转运动在支撑套管的内部进行得更顺畅。当选用钢丝弹簧管作为支撑套管时，可在该钢丝弹簧管的外面再包覆住一根保护套管，或者,至少在从壳体表面穿出并连接至刷头端的该段所述软质钢丝弹簧或扭力钢丝的外部还套设有保护套管，其余段的钢丝弹簧管或扭力钢丝由于本身就在壳体内部受到保护，故可以不设置保护套管，此时该保护套管其中一端的管口应当与壳体前端开设的孔或槽大小和形状相同，堵封住该壳体上的开孔或者开槽，另一端应束缚住钢丝弹簧管，防止在刷牙过程中的异物或水落入壳体内；外层的保护套管可以进一步起到保护和隔离的作用，增加传动模块的安全性和外部质感的舒适性，外层的保护管可由橡胶或硅胶或塑料或其他类似质感的材料构成。
参照图5所示，所述刷头盖4由两个一体成型的弓形支架41组成，各个所述弓形支架的前、后两端设有一通孔状的轴套，在所述滚刷轴的两端各
设有一个两端高中间低的轴承，所述轴承刚好卡合在该轴套的通孔内，二者形成活动连接。优选地，该轴承设有两个，且该两个轴承均为如图6所示的“工字轴承”，或者一个为“工字轴承”，另一个为“T字轴承”(靠近传动杆的一端)。该轴承可绕该轴套两端的通孔进行旋转，轴套的作用主要在于限制或者防止滚刷轴前后移动影响客户体验，确保其只能做圆周运动。更具体地，前述的第一定位片11是设置在滚刷轴后端轴套的前侧，第二定位片12是设置在传动软轴后端轴套的后侧、矩形传动套的前侧。
两个所述弓形支架具有一连接部42，在该连接部的中央还开设有一圆孔43，该结合部还留有供壳体3穿入的开口槽，所述壳体3从壳体3后端至壳体3前端逐渐变细，所述壳体3呈扁铲型，所述壳体3前端设有一圆形的凸起8，所述壳体3前端插入所述结合部的开口槽内，所述凸起卡合在所述圆孔内，使得刷头盖4和壳体3的连接更为牢固。当然，开孔不限于本实施例中的圆孔状，凸起的大小和圆孔的大小相等或者凸起的大小略大于圆孔的大小。
在所述刷头盖4的左右两端还设有软性包覆膜，其中，该软胶包覆膜形成于该两个弓形支架朝外的两个左右端部。刷头盖4的包覆膜与弓形支架一体成型。刷头盖4整体对各个滚刷轴5形成半包围式包覆。软性包覆膜的内表面光滑，且呈曲线形，软性包覆膜到滚刷轴5的中心轴之间的距离刚好等于或者略大于刷毛的长度，这使得刷头在贴近牙齿转动时，因软性包覆膜的阻隔，刷毛既能有效刷拂牙齿，又不会过多接触到口腔的其他部分给用户造成不适感。刷头盖4可由硅胶材料构成，既有良好的柔软质感，又有一定的坚韧性。该包覆膜也采用高科技硅胶材料，质软，即使触碰到口腔也不容易给口腔造成伤害。
具体来说，所述手柄端1包括手柄外壳，手柄外壳表面设有开关，手柄外壳内部设有传动模块、电动模块以及供电模块(参照图3)，电动模块分别连接所述传动模块和供电模块。所述传动模块的顶端设有至少两个转动套，该转动套横截面呈矩形，并对应与前述的外壳后端的长方体传动对接头配合，当供电开关闭合时，在电动模块的驱动下，所述电动模块还设有与其相配合的无线充电底座，传动模块运转带动矩形的转动套也旋转，进而带动插入在该转动套内的矩形的传动对接头旋转，力将通过旋转传动杆传动至滚刷轴5，
导致滚刷轴5旋转做圆周运动使得刷毛连续对牙齿进行拂刷。该传动模块包括至少两个相啮合的传动齿轮，两个传动齿轮在运动时，刚好反向旋转，使得两根传动杆反向旋转，符合巴氏刷牙法特性。
此外,在所述壳体内部靠近底端的边缘处还设有一卡扣(图中未示出)，对应地，在手柄端顶端设有与该卡口配合的卡槽。
与现有技术相比，本发明采用双刷头技术，牙齿内外侧面可以被同时拂刷清洗，可以显著提升刷牙的效率和洁齿效果，特别是原来往往被忽略掉的牙齿内侧和牙缝。此外，通过把旋转传动杆6内置在壳体3里头，避免了原有的外置式传动杆容易给口腔造成可能的伤害和不适问题，且更美观。
当然，本领域技术人员应当理解的是，该双刷头牙刷可扩展到多个刷头,比如三刷头的牙刷等。
根据以上特点，本发明适用的用户群体如下：
1)、佩戴牙齿矫正器的人士。
2)、希望刷牙更加便捷高效、轻松舒适的人士。
虽然以上结合优选实施例对本发明进行了描述，但本领域的技术人员应该理解，本发明所述的方法和系统并不限于具体实施方式中所述的实施例，在不背离由所附权利要求书限定的本发明精神和范围的情况下，可对本发明作出各种修改、增加、以及替换。
Claims (11)
- 一种双刷头电动牙刷，包括手柄端和刷头端，所述刷头端包括一中空的壳体和与该壳体前端相连接的刷头盖，壳体后端连接该手柄端，所述刷头盖上插接有两个滚刷轴，滚刷轴上植有刷毛，其特征在于，所述电动牙刷还包括有两个旋转传动杆，其中，所述旋转传动杆伸入所述壳体内，所述旋转传动杆的后端连接所述手柄端,所述旋转传动杆的前端从靠近刷头盖的所述壳体表面开设的孔或槽穿出分别连接至对应的所述刷头端的所述滚刷轴上。
- 如权利要求1所述的双刷头电动牙刷，其特征在于,所述旋转传动杆为采用柔性材料制成、且可曲线传动的传动软轴。
- 如权利要求2所述的双刷头电动牙刷，其特征在于，所述传动软轴为扭力钢丝或为尼龙绳。
- 如权利要求2或3所述的双刷头电动牙刷，其特征在于，在所述传动软轴的前后两端还设有分别与所述滚刷轴和手柄端配合连接的传动对接头。
- 如权利要求4所述的双刷头电动牙刷，其特征在于，在所述传动软轴前端与滚刷轴之间设有一第一定位片，在所述软轴后端与手柄端之间还设有一第二定位片。
- 如权利要求2或3所述的双刷头电动牙刷，其特征在于，在所述传动软轴的外部还套有支撑套管，所述支撑套管为弹性套管。
- 如权利要求6所述的双刷头电动牙刷，其特征在于，所述支撑套管至少在从壳体表面穿出并连接至刷头端的该段的外部还套设有保护套管。
- 如权利要求1至3任一所述的双刷头电动牙刷，其特征在于，所述刷头盖由两个一体成型的弓形支架组成，各个所述弓形支架的前、后两端设 有一通孔状的轴套，在所述滚刷轴的两端各设有一个两端高中间低的轴承，所述轴承刚好卡合在该轴套的通孔内并可绕该通孔旋转。
- 如权利要求8所述的双刷头电动牙刷，其特征在于,在所述刷头盖的左右两端还设有软性包覆膜，所述包覆膜对所述刷毛形成半包围式包覆，其中，该软性包覆膜形成于该两个弓形支架朝外的两个左右端部。
- 如权利要求8所述的双刷头电动牙刷，其特征在于,两个所述弓形支架具有一连接部，在该连接部的中央还开设有一开孔，所述壳体前端设有一凸起，所述壳体前端插入所述连接部内，所述凸起卡合在所述开孔内。
- 如权利要求4所述的双刷头电动牙刷，其特征在于,所述手柄端和壳体后端为可拆卸连接，与所述手柄端相配合的所述软轴后端的传动连接头的截面呈矩形或方形，所述手柄端内部设有与该截面呈矩形或方形的所述传动对接头相配合的传动套。
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| CN2389636Y (zh) * | 1999-08-11 | 2000-08-02 | 林辉忠 | 电动牙刷 |
| CN1459278A (zh) * | 2002-05-13 | 2003-12-03 | 王宇 | 一种三维电动牙刷 |
| CN2654059Y (zh) * | 2003-06-21 | 2004-11-10 | 司昌武 | 电动保健牙刷 |
| CN2657607Y (zh) * | 2003-09-08 | 2004-11-24 | 罗兆云 | 保健牙刷 |
| CN2759424Y (zh) * | 2004-11-29 | 2006-02-22 | 李鱼飞 | 一种电动牙刷 |
| CN202060908U (zh) * | 2011-05-05 | 2011-12-07 | 曹奎新 | 滚动式电动牙刷 |
| CN203089437U (zh) * | 2013-01-21 | 2013-07-31 | 张亚男 | 新式电动式牙刷 |
| CN205514996U (zh) * | 2016-02-02 | 2016-08-31 | 吴勤 | 一种双刷头电动牙刷 |
-
2016
- 2016-02-02 CN CN201620102850.7U patent/CN205514996U/zh not_active Expired - Fee Related
-
2017
- 2017-01-16 WO PCT/CN2017/071265 patent/WO2017133437A1/zh active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1154650A (zh) * | 1993-10-26 | 1997-07-16 | 帕特里克·阿尔努 | 具有两个转动刷系统的牙刷 |
| CN2260588Y (zh) * | 1995-05-22 | 1997-08-27 | 吴学智 | 三转刷立体组合式电动牙刷 |
| CN2266391Y (zh) * | 1996-11-21 | 1997-11-05 | 骆燕 | 自动牙刷 |
| CN2389636Y (zh) * | 1999-08-11 | 2000-08-02 | 林辉忠 | 电动牙刷 |
| CN1459278A (zh) * | 2002-05-13 | 2003-12-03 | 王宇 | 一种三维电动牙刷 |
| CN2654059Y (zh) * | 2003-06-21 | 2004-11-10 | 司昌武 | 电动保健牙刷 |
| CN2657607Y (zh) * | 2003-09-08 | 2004-11-24 | 罗兆云 | 保健牙刷 |
| CN2759424Y (zh) * | 2004-11-29 | 2006-02-22 | 李鱼飞 | 一种电动牙刷 |
| CN202060908U (zh) * | 2011-05-05 | 2011-12-07 | 曹奎新 | 滚动式电动牙刷 |
| CN203089437U (zh) * | 2013-01-21 | 2013-07-31 | 张亚男 | 新式电动式牙刷 |
| CN205514996U (zh) * | 2016-02-02 | 2016-08-31 | 吴勤 | 一种双刷头电动牙刷 |
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| CN205514996U (zh) | 2016-08-31 |
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