CN209899641U

CN209899641U - Electric toothbrush head

Info

Publication number: CN209899641U
Application number: CN201920386544.4U
Authority: CN
Inventors: 刘明; 刘仕华; 陈建群
Original assignee: Guangzhou Hao Wan Wake Technology Co Ltd
Current assignee: Guangzhou Haoxingwan Technology Co Ltd; Guangzhou Stars Pulse Co Ltd
Priority date: 2019-03-25
Filing date: 2019-03-25
Publication date: 2020-01-07
Anticipated expiration: 2029-03-25

Abstract

The utility model discloses an electric toothbrush brush head, the brush head is connected including a brush section of thick bamboo brush head connecting piece in the cavity of brush section of thick bamboo lower extreme and being located the brush hair portion of brush section of thick bamboo front end, the chamber is connected for being used for the second that is connected with the electric toothbrush actuating lever in the centre of brushing the head connecting piece, the lower extreme in chamber is connected to the second is an elastic component, be provided with the card eaves that is used for the joint actuating lever on the side of elastic component and actuating lever contact, the chamber is wholly cylindrical is connected to the second the upper end in chamber is connected to the second and the cavity position of actuating lever upper end contact is provided with prevents that the actuating lever from taking place pivoted fastening block. The brush head has simple structure and good plugging effect.

Description

Electric toothbrush head

Technical Field

The utility model relates to an electric toothbrush technical field, concretely relates to toothbrush head field.

Background

Blaine gmbh (patentee), 11.2004, day 06 (filing date), CN1882291B (grant publication number), for a brush portion of an electric toothbrush (patent name). A head for a power toothbrush is disclosed which provides sufficient biting force between the head and a drive rod by providing first and second spring elements within a head cavity of the head to grip the drive rod in a handle.

The two spring elements of the solution disclosed in this patent are easily damaged during frequent plugging and unplugging, and the period of use is not long.

SUMMERY OF THE UTILITY MODEL

The technical scheme is as follows:

the utility model provides an electric toothbrush brush head, brush head includes that a brush section of thick bamboo is connected brush head connecting piece and being located in the cavity of brush section of thick bamboo lower extreme brush hair portion of brush section of thick bamboo front end, its characterized in that: the chamber is connected for the second that is used for being connected with the electric toothbrush actuating lever in the middle of the first connecting piece of brush, the lower extreme in chamber is connected to the second is an elastic component, be provided with the card eaves that is used for the joint actuating lever on the side of elastic component and actuating lever contact, the chamber is connected to the second wholly for cylindrical the cavity position that the upper end in chamber and actuating lever upper end contact are connected to the second is provided with prevents that the actuating lever from taking place pivoted fastening block.

Furthermore, the brush head connecting piece is detachably connected with the brush cylinder.

Preferably, the lower end of the brush head connecting piece is inwards recessed to form a circle of second fixing groove, two connecting convex blocks are axially arranged on the outer surface of the brush head connecting piece, and the two connecting convex blocks are respectively a first convex block and a second convex block; correspondingly, a fixing block matched with the second fixing groove is arranged in the cavity of the brush barrel, and a first groove and a second groove matched with the first lug and the second lug are formed in the inner cavity of the brush barrel.

Further, the bristles on the bristle part are arranged in three layers from the center of the bristle part to the outside.

Further, the free ends of the bristles on the bristle part are arranged to facilitate the brushing of the tips of teeth gaps.

It should be noted that:

the foregoing "first and second" do not denote any particular quantity or order, but rather are used to distinguish one name from another.

Compared with the electric toothbrush in the prior art, the electric toothbrush of the utility model has the following advantages:

1. the elastic component of the brush head of the electric toothbrush is arranged in the cavity of the toothbrush head, the elastic component is provided with a clamping eave for clamping the driving shaft rod, the clamping eave is only slightly squeezed by the shaft rod and restored in the process of plugging and unplugging the toothbrush head on the driving shaft rod, and the design can ensure that the deformation of the spring component in the process of plugging and unplugging is small, and more plugging and unplugging times can be ensured.

2. The corresponding two sides of the cavity of the brush head connecting piece of the brush head are provided with the fastening blocks which can prevent the driving shaft rod inside the fastening blocks from rotating.

3. The bristles on the bristle part of the toothbrush head are cut by the cutter to form tips, and the tips have the orientation in all directions. When the brush head with the sharp ends is used for brushing teeth, the sharp ends on the brush hair can more easily enter the gaps between the teeth and the gaps between the gums for deep cleaning.

Drawings

FIG. 1 is a perspective view of an electric toothbrush in accordance with an embodiment of the present invention;

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

FIG. 3 is a bottom view of the electric toothbrush of the present invention;

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

FIG. 5 is a cross-sectional view taken along plane A-A of FIG. 3;

FIG. 6 is a cross-sectional view taken along the plane B-B in FIG. 3;

FIG. 7 is a view showing a state where the motor is connected to the shaft main body;

FIG. 8 is a schematic structural view of the shaft body;

FIG. 9 is a schematic view of the structure of the light-transmissive envelope;

FIG. 10 is a schematic structural view of an injection mold for the housing;

FIG. 11 is a schematic view of the construction of a bristle part having bristle tips;

FIG. 12 is a schematic view of a bristle attachment member;

FIG. 13 is a schematic view of the brush head in an exploded state;

FIG. 14 is a schematic view of the connection of the shaft body to the head;

FIG. 15 is a schematic view of the configuration of the interior cavity of the brush cartridge;

description of reference numerals:

1. an electric toothbrush;

10. a handle;

101. a housing;

1011. a light transmitting layer;

1012. a light-shielding layer;

10121. a light-transmitting hole;

1013. anti-slip strips;

102. an internal component;

1021. a motor;

1022. a battery;

1023. a PCB board;

10231. an LED lamp;

1024. a visor;

1025. a movement frame;

1026. a shaft body;

10261. a first contact plane;

10262. a second contact plane;

10263. a fastening groove;

10264. a first connection chamber;

10265. a slope surface;

10266. a slope surface;

10267. a first fixing groove;

103. a switch button;

20. a brush head;

201. a brush cylinder;

2011. a first groove;

2012. a second groove;

2013. a fixed block;

202. a brush part;

2021. bristle tips;

203. a brush head connecting member;

2031. a second connection chamber;

2032. an elastic member;

2033. clamping eaves;

2034. a fastening block;

2035. a second fixing groove;

2036. a first bump;

2037. a second bump;

2. a mold;

21. a protrusion;

Detailed Description

The following describes embodiments of the present invention in detail.

The electric toothbrush 1 shown in fig. 1 to 6 comprises a handle 10, a brush head 20 and a charging socket 30, wherein the handle 10 comprises a housing 101, an inner assembly 102 arranged inside the housing 101 and a switch button 103 arranged on the housing, and the inner assembly 102 comprises a deck 1025 and a motor 1021, a battery 1022 and a PCB 1023 fixed on the deck 1025. The brush head 20 comprises a brush cylinder 201, a brush head connecting piece 203 connected in a cavity at the lower end of the brush cylinder 201, and a bristle part 202 positioned at the head of the brush cylinder 201.

As shown in fig. 3 and 4, the lower end of the handle 10 is of a similar triangular prism structure, the top of the handle is contracted along the axial direction of the similar triangular prism toward the inner direction of the triangular prism to be matched with the brush head 20, and the included angle between the bristle plane of the electric toothbrush 1 and one surface of the triangular prism is 30-60 °. The holding part of the handle 10 is designed to be a triangular prism structure, and an included angle of 30-60 degrees is formed between the bristle plane of the brush head and one surface of the triangular prism, so that the bristles of the toothbrush naturally form a certain angle with teeth when a toothbrush user brushes the teeth, and bad tooth brushing habit that the bristles vertically contact with the tooth plane when brushing the teeth can be effectively corrected. The plane of the bristles is parallel to the surface of the teeth for brushing teeth, the bristles can hardly clean gaps between the teeth and stains in a gingival sulcus, and the adjustment of a certain angle between the plane of the bristles of the toothbrush and the contact surface of the teeth is more favorable for cleaning the stains in the gaps between the teeth.

Preferably, the similar triangular prism is a similar regular triangular prism. Preferably, the bristle plane of the electric toothbrush is at an angle of 45 ° to one of the faces of the triangular prism. The edges of the similar triangular prisms are chamfered, and the side surfaces of the similar triangular prisms are cambered surfaces protruding outwards from the prisms. The handle 10 of the regular triangular prism structure enables a toothbrush user to keep the relative orientation of the toothbrush handle in the palm unchanged no matter how the toothbrush user holds the toothbrush handle, and combines the habit of brushing teeth of a human body, when the plane of the brush head and the side surface in front of the regular triangular prism form an included angle of 45 degrees, the brush hair and the teeth can be kept at an angle of 45 degrees more easily during tooth brushing, and the tooth brushing method is close to the pasteurization tooth brushing method.

The brush head and the handle can be of an integrated structure and also can be of a detachable connection structure, and the detachable connection mode is preferred, so that the use cost can be saved, and the brush head can be replaced more conveniently. The surface of the shell of the handle extends from top to bottom to be provided with anti-slip strips, and the anti-slip strips effectively prevent the handle from slipping off from the palm.

As shown in fig. 1, 2, 5, 6, 9 and 10, the handle 10 includes a handle housing 101 and an inner member 102 disposed inside the housing 101. Be provided with printing opacity display structure on the handle, the display structure of printing opacity structure for showing power electric quantity, mode gear includes euphotic layer 1011 and light shield layer 1012 on the shell 101, euphotic layer 1011 does the inlayer of handle, and be the transparent printing opacity material of one deck, the light shield layer does the top layer of handle, and make for light-tight material, be provided with light trap 10121 on the light shield layer 1012 and make the inside light source of handle pass through light trap 10121 sets up directly over the light source on the inside PCB board 1023 of handle. The light source is preferably an LED lamp 10231.

Preferably, a light shielding plate 1024 is further disposed between the PCB 1023 and the housing 101, and a light passing hole 10241 is disposed on the light shielding plate 1012 located directly above the light source of the PCB 1023. Clear light hole 10241 is located directly over LED lamp 10231, can be effectual with the light direction that LDE lamp pearl sent in the light trap 10121 on the shell, also can shelter from simultaneously being located near light of light trap 10121 is to the interference of display effect.

The preparation method of the light-transmitting shell of the electric toothbrush comprises the following steps:

step one, a transparent plastic light-transmitting layer is injected into a mould 2;

and secondly, injecting an opaque plastic light shading layer on the surface of the light-transmitting layer in the first step.

Preferably, the plastic light shielding layer is pink, gray, blue or green or a combination of more.

Preferably, the light-transmitting layer has a thickness greater than that of the light-shielding layer.

When the light shielding layer is injection-molded in the second step, the mold at the position of the light transmission hole 10121 is provided with the protrusion 21, and no opaque material is required to be injection-molded at this position, so that the designed gallery formed at the surface of the light transmission layer is the light transmission hole 10121.

Royal philips electronics ltd (patentee), 2011 12.23 (application date), CN103281988B (grant publication number), hidden user interface panel of personal care appliance and preparation method (patent name) of the same, discloses a light transmission panel of an electric toothbrush and a preparation method of the same, wherein the disclosed light transmission display structure is that light-shading paint is coated on the surface of a light transmission layer, and then the light-shading paint is subjected to laser engraving to form a light transmission hole.

The transparent display structure of philips is complex, the process is complicated, and the manufacturing cost is high. The utility model discloses a preparation of printing opacity display structure has simple process, advantage with low costs.

As shown in fig. 11-15, the electric toothbrush head 20 includes a brush barrel 201, a brush head connecting member 203 connected to a lower end cavity of the brush head 201, and a brush head portion 202 located at a front end of the brush barrel 201, a second connecting cavity 2031 is arranged in the middle of the brush head connecting member 203 and is connected to an electric toothbrush driving rod, the lower end of the second connecting cavity 2031 is an elastic member 2032, a clamping ledge 2033 for clamping the driving rod is arranged on a side surface of the elastic member 2032 contacting the driving rod, the second connecting cavity 2031 is integrally cylindrical, and a fastening block 2034 for preventing the driving rod from rotating is arranged at a cavity position where an upper end of the second connecting cavity 2031 contacts an upper end of the driving rod.

Preferably, the brush head connector 203 is detachably connected to the brush cartridge 201.

A circle of second fixing grooves 2035 is concavely arranged at the lower end of the brush head connecting piece 203, and two connecting convex blocks are axially arranged on the outer surface of the brush head connecting piece 203, wherein the two connecting convex blocks are a first convex block 2036 and a second convex block 2037 respectively; correspondingly, a fixing block 2034 adapted to the second fixing groove 2035 is disposed inside the cavity of the brush barrel 201, and a first groove 2011 and a second groove 2012 adapted to the first protrusion 2036 and the second protrusion 2037 are disposed on the inner cavity of the brush barrel 201.

The fastening blocks 2034 are disposed at the front end of the second connecting cavity 2031 and located at two contact planes, and the contact planes between the two fastening blocks 2034 and the two contact planes are also planar (the two fastening blocks 2034 are located at two sides of the two contact planes, respectively), so that the shaft body 1026 is clamped between the two fastening blocks 2034, and the brush head 20 can be prevented from rotating relative to the shaft body 1026.

The bristles on the bristle part are arranged into three layers from the center of the bristle part to the outside. The free ends of the bristles on the bristle part 202 are arranged to be tips 2021 which can facilitate the brushing of tooth gaps.

The head of the bristles on the bristle part 202 is cut into tips with different orientations by a cutter, and the bristles with the tips can more easily enter gaps between teeth and gaps between gums for cleaning the teeth.

The utility model discloses a brush head realizes being connected of brush head 20 and handle 10 through the block that sets up the fastening groove 10263 of the card eaves 2033 on the elastic component of cavity position and drive shaft mid portion, and in the inside of the cavity of brush head connecting piece 203, is located two contact plane's position is provided with prevents actuating lever pivoted fastening block 2034.

As shown in fig. 5 to 8, in the process of inserting the shaft body 1026 into the cavity of the brush head connector 203, the slope surface at the front end of the shaft body 1026 has a guiding function, when the shaft body 1026 is pushed forward, and the slope 10265 surface on the first contact plane 10261 contacts the fastening ledge 2033 on the elastic member 2032, the fastening ledge 2033 is pushed open, so that the fastening ledge 2033 is slightly expanded until the fastening groove 10263 in the middle of the shaft body 1026 slides to the position of the fastening ledge 2033, and at this time, the fastening ledge 2033 is restored to the original state, and the fastening groove 10263 on the shaft body 1026 is fastened. When the brush head 20 is to be pulled off the shaft body 1026, the locking ledge 2033 slides along the sloping surface 10266 of the fastening groove 10263, thereby facilitating the pulling of the brush head.

During the process of inserting and removing the brush head 20, the contact surface between the locking ledge 2033 on the elastic member 2032 and the cylindrical surface of the shaft body 1026 is small, so the deformation of the elastic member 2032 is small, which can increase the number of times of inserting and removing the brush head (the toothbrush of the prior art is damaged after a certain number of times of inserting and removing).

As shown in fig. 5-8, the driving rod of the electric toothbrush includes a cylindrical shaft body 1026, the front end of the shaft body 1026 is used for inserting the brush head 20, the rear end of the shaft body is connected with the motor shaft inside the electric toothbrush handle 10, two contact planes are arranged in parallel at the front end of the shaft body 1026, the two contact planes are respectively a first contact plane 10261 and a second contact plane 10262, both contact planes extend downwards from the top of the front end of the shaft, and a circle of fastening groove 10263 is recessed in the middle of the shaft body 1026 towards the inside of the shaft.

The head of the front end of the shaft lever main body 1026 is provided with a slope surface for facilitating the insertion of the driving rod into the brush head.

A ramp 10265 is disposed between the lower ends of the two contact planes and the cylindrical surface of the shaft.

Between the fastening slot 10263 and the cylindrical surface of the shaft is a ramp 10266 structure.

The rear end of the shaft main body 1026 is provided with a first connection chamber 10264 for connection to a motor in the axial direction of the shaft main body 1026.

A first fixing groove 10267 for fixing the shaft main body 1026 is provided at a rear end of the shaft main body 1026 at a position below the fastening groove 10263.

Royal philips electronics ltd (patentee), 09/2008 (filing date), CN101902986B (grant publication number), brush head/handle interface for electric toothbrushes (patent name). This patent discloses an electric toothbrush drive shaft, which is provided with a rough structure on a contact plane at the front end thereof to improve torque force between the brush head and the shaft.

The utility model discloses a contact plane of the axostylus axostyle main part of actuating lever is glossy structure, and the primary action has two: firstly, when the brush head is inserted, the two contact planes guide the brush head; and secondly, the two contact planes enable the front end of the shaft lever main body of the cylindrical structure to be provided with an edge, and the brush head can be prevented from rotating on the shaft lever main body by matching with the clamping of the brush head connecting piece.

Compare with the drive axostylus axostyle that philips discloses, the utility model discloses a drive axostylus axostyle's simple structure, the cost of manufacture is low.

The above are only specific embodiments of the present invention, and the protection scope of the present invention is not limited thereby; any replacement and improvement made on the basis of not violating the conception of the utility model belong to the protection scope of the utility model.

Claims

1. The utility model provides an electric toothbrush brush head, brush head includes that a brush section of thick bamboo is connected brush head connecting piece and being located in the cavity of brush section of thick bamboo lower extreme brush hair portion of brush section of thick bamboo front end, its characterized in that: the middle of the brush head connecting piece is a second connecting cavity for being connected with an electric toothbrush driving rod, the lower end of the second connecting cavity is an elastic component, a clamping eave for clamping the driving rod is arranged on the side face, contacted with the driving rod, of the elastic component, the second connecting cavity is integrally cylindrical, and a fastening block for preventing the driving rod from rotating is arranged at the position, contacted with the upper end of the driving rod, of the upper end of the second connecting cavity.

2. The powered toothbrush head of claim 1, wherein: the brush head connecting piece is detachably connected with the brush cylinder.

3. An electric toothbrush head according to claim 2, wherein: the lower end of the brush head connecting piece is inwards recessed to form a circle of second fixing groove, two connecting convex blocks are axially arranged on the outer surface of the brush head connecting piece, and the two connecting convex blocks are respectively a first convex block and a second convex block; correspondingly, a fixing block matched with the second fixing groove is arranged in the cavity of the brush barrel, and a first groove and a second groove matched with the first lug and the second lug are formed in the inner cavity of the brush barrel.

4. A powered toothbrush head according to claim 3, characterised in that: the bristles on the bristle part are arranged into three layers from the center of the bristle part to the outside.

5. The powered toothbrush head of claim 4, wherein: the free ends of the bristles on the bristle part are arranged to be pointed ends which can be used for conveniently brushing tooth gaps.