Portable electric toothbrush
Technical Field
The present invention relates to toothbrushes, and more particularly to a portable electric toothbrush.
Background
Because the traditional tooth brushing mode is difficult to remove dental plaque, and if the tooth brushing mode is improper, the cleaning effect of tooth brushing is greatly reduced, and meanwhile, the gums and teeth of people are prepared to be decocted, even serious damages are caused to the gums and teeth of people, and the electric toothbrush can avoid the damages and bring much pleasure and feeling to people, so that the electric toothbrush is extremely hot in the market.
Compared with the common toothbrush, the electric toothbrush on the market at present is inconvenient when people need to carry the electric toothbrush out because the electric toothbrush is large in size.
Disclosure of Invention
In order to solve the problem of inconvenient carrying caused by huge size of the electric toothbrush in the prior art, the invention aims to provide a portable electric toothbrush.
The portable electric toothbrush of the present invention comprises: a base having a receiving cavity; a self-locking mechanism; and a handle pivotally connected to the base by a self-locking mechanism; in the folded state, the brush handle is locked and embedded in the accommodating cavity of the base through the self-locking mechanism; in the use state, the brush handle is locked at the use position through the self-locking mechanism after being rotated out of the accommodating cavity; the self-locking mechanism comprises a button, a spring, a first positioning block and a second positioning block, wherein the button and the spring are connected into a whole and extend through a through hole of the brush handle, the first positioning block and the second positioning block are respectively arranged on two sides of the brush handle and are relatively fixed on the base, the button is connected with the first positioning block, and the spring is connected with the second positioning block.
The first positioning block is provided with a containing hole and an axially extending limiting wall arranged around the containing hole, the button extends through the containing hole, and the limiting wall is provided with a locking groove; the side wall of the through hole of the brush handle is provided with an axially extending guide groove aligned with the locking groove; the button is provided with a limiting block which extends out radially; when the limiting block is accommodated in the locking groove, the brush handle is locked in a folding state and a using state; when the limiting block is accommodated in the guide groove, the brush handle can pivot around the axial direction.
The second positioning block is provided with an axially extending mounting column and a mounting wall arranged around the mounting column, the mounting wall is provided with a slit, and a spring sleeved on the mounting column is accommodated in an annular space between the mounting column and the mounting wall and clamps the extending end of the spring through the slit.
The first positioning block is provided with a first limiting groove surrounding the limiting wall, the side face of the brush handle facing the first positioning block is provided with a first limiting key extending axially, and the first limiting key extends into the first limiting groove to cooperate with the first limiting key to limit the rotation angle of the brush handle; and/or the second positioning block is provided with a second limit groove which is arranged around the mounting wall, the side face of the brush handle, which faces the second positioning block, is provided with a second limit key which extends out axially, and the second limit key extends into the second limit groove to be matched with the second limit groove so as to limit the rotation angle of the brush handle.
The button has spacing face, and the mounting wall has spacing wall, and spacing wall cooperates with spacing face in order to carry out spacingly to the axial displacement degree of depth of button.
The first positioning block is provided with an axially concave positioning hole and a clamping groove, the second positioning block is provided with an axially protruding positioning pin and a buckle, the positioning pin is inserted into the positioning hole to be matched with the positioning hole, and the buckle is inserted into the clamping groove to be matched with the positioning hole to relatively fix the second positioning block to the first positioning block.
The button has an anti-drop block for abutting against an inner sidewall of the first positioning block to prevent the button from axially dropping out.
The brush handle comprises a handle body and a brush head detachably connected with one end of the handle body.
The handle body is provided with an accommodating groove, and the side wall of the accommodating groove is provided with a concave part; the brush head is provided with a bottom plate, and the side wall of the bottom plate is provided with a convex part; the convex part is clamped into the concave part to be matched.
The handle body is provided with a through hole, the bottom plate is provided with a protruding pressing head, and the pressing head stretches into the through hole to be matched.
The base comprises a shell, a base plate and a vibration device, wherein the base plate is clamped in the shell, and the vibration device is accommodated in a hollow cavity defined by the shell and the base plate so as to provide vibration for the shell.
The vibration device comprises a frame, a printed circuit board, an electric motor and a battery, wherein the printed circuit board, the electric motor and the battery are all carried on the frame to be accommodated in the hollow cavity, the battery is connected with the electric motor through the printed circuit board to provide power required by the electric motor, and an output shaft of the electric motor is connected with the shell to provide vibration of the shell
The brush handle of the portable electric toothbrush can be locked and embedded in the accommodating cavity of the base through the self-locking mechanism in the folded state, so that the volume of the toothbrush is reduced and the portable electric toothbrush is convenient to carry, and particularly, the toothbrush can be automatically opened through the spring in the self-locking mechanism, and is very convenient. In addition, the brush head of the portable electric toothbrush can be replaced according to the requirement, and vibration is transmitted to the brush head through the self-locking mechanism, so that the tooth brushing process is more comfortable.
Drawings
FIG. 1A is a schematic view of a portable electric toothbrush according to the present invention in a folded state;
FIG. 1B is a schematic view of a portable electric toothbrush according to the present invention in use;
FIG. 2 is an exploded view of a portable electric toothbrush according to the present invention;
FIG. 3 is an enlarged view of a portion of the handle body and head of the handle of FIG. 2;
FIG. 4 is a schematic view of the structure of the push button of the self-locking mechanism of FIG. 2;
FIG. 5 is a schematic structural view of a first positioning block of the self-locking mechanism of FIG. 2;
FIG. 6 is a schematic structural view of a second positioning block of the self-locking mechanism in FIG. 2;
fig. 7 illustrates the mating mechanism of the handle and self-locking mechanism of fig. 2.
Detailed Description
Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1A to 1B, the portable electric toothbrush according to the present invention includes a handle 1, a self-locking mechanism 2, and a base 3, wherein the handle 1 is connected to the base 3 through the self-locking mechanism 2. In the folded state shown in fig. 1A, the brush holder 1 is locked and embedded in the accommodating cavity 3a of the base 3 by the self-locking mechanism 2 for storage, so that the brush holder is convenient to carry. In the use state as shown in fig. 1B, the brush holder 1 is locked at the use position by the self-locking mechanism 2 after being rotated out of the accommodating cavity 3a, so that the use is convenient.
Fig. 2 is an exploded view of a portable electric toothbrush according to the present invention, in which a handle 1 includes a handle body 11 and a brush head 12 detachably coupled to one end of the handle body 11. The other end of the handle 11 opposite the brush head 12 is formed with an enlarged portion 13, which enlarged portion 13 is pivotably connected to the base 3 by the self-locking mechanism 2. Specifically, the self-locking mechanism 2 comprises a button 21, a spring 22, a first positioning block 23 and a second positioning block 24, wherein the button 21 and the spring 22 are connected into a whole and extend through a through hole 13a of the expansion part 13, the first positioning block 23 and the second positioning block 24 are respectively arranged at two sides of the expansion part 13 and are relatively fixed on the base 3, the button 21 is connected with the first positioning block 23, and the spring 22 is connected with the second positioning block 24, so that the expansion part 13 (namely the brush handle 1) can be locked at a required position through the button 21 and the spring 22. The base 3 includes a housing 31, a base plate 32 and a vibration device 33, wherein the base plate 32 is clamped to the housing 31, the base plate 32 and the housing define a hollow cavity 3b, the vibration device 33 is accommodated in the hollow cavity 3b to provide vibration of the housing 31, and the vibration is transmitted to the brush handle 1 through the self-locking mechanism 2 to gently drive the brush hair on the brush head 12 to vibrate. Specifically, the vibration device 33 includes a frame 331, a printed circuit board 332, an electric motor 333, and a lithium battery 334, wherein the printed circuit board 332, the electric motor 333, and the lithium battery 334 are all carried on the frame 331 to be accommodated in the hollow cavity 3b, the lithium battery 334 is connected with the electric motor 333 through the printed circuit board 332 to provide power required by the electric motor 333, and an output shaft of the electric motor 333 is connected with the housing 31 to provide vibration of the housing 31. It should be appreciated that the vibration device 33 may further include a charging coil 335 fixed under the frame 331 to perform a charging operation on the lithium battery 334.
Fig. 3 is an enlarged view of a portion of the handle body 11 and the head 12 of fig. 2, wherein the handle body 11 has a receiving groove 111 having three recesses 111a spaced apart on a sidewall of the receiving groove 111; the brush head 12 has a flat base plate 121 with three spaced apart protrusions 121a on the side wall of the base plate 121; the brush head 12 can be mounted and fixed on the handle 11 by the convex part 121a being snapped into the concave part 111a to be matched. In addition, referring to fig. 2, the shank 11 has a through hole 111b, and the bottom plate 121 has a pressing head 121b protruding from the bottom surface, the pressing head 121b protruding into the through hole 111b to be engaged. The brush head 12 can be detached from the handle 11 by the pressing head 121b being pulled out of the through hole 111b by an external force, driving the protruding portion 121a out of the recessed portion 111 a.
Fig. 4 is a schematic structural view of the button 21 of the self-locking mechanism in fig. 2, wherein the button 21 has a cylindrical structure including a pressing surface 21a and a limiting surface 21b opposite to each other, and the button 21 is driven to move in the axial direction by an external force acting on the pressing surface 21 a. The middle part of the circumferential wall of the button 21 is provided with two opposite limiting blocks 21c which extend radially, and an anti-falling block 21d is arranged near the limiting surface 21b of the circumferential wall of the button 21.
Fig. 5 is a schematic structural view of the first positioning block 23 of the self-locking mechanism in fig. 2, wherein the first positioning block 23 has an L-shaped structure and is composed of a first base plate 231 and a first extension plate 232 which are perpendicular to each other. The first base plate 231 has a receiving hole 231a and an axially protruding stop wall 231b disposed around the receiving hole 231a, and the button 21 extends through the receiving hole 231 a. The limit wall 231b has two opposite locking grooves 231b1 for locking the push button 21. The first substrate 231 further has a first limit groove 231c provided around the limit wall 231b, and an extension length of the first limit groove 231c is set as needed. The first extension plate 232 has two positioning holes 232a axially recessed and spaced apart from each other, and a clamping groove 232b is disposed between the two positioning holes 232 a.
Fig. 6 is a schematic structural view of the second positioning block 24 of the self-locking mechanism in fig. 2, where the second positioning block 24 is also in an L-shaped structure and is composed of a second base plate 241 and a second extension plate 242 that are perpendicular to each other. The second base plate 241 has a mounting post 241a axially protruding for housing the spring 22 and a mounting wall 241b disposed around the mounting post 241 a. The mounting wall 241b includes an annular wall 241b1 and a stopper wall 241b2 spaced apart by a slit 241b3, and the spring 22 fitted over the mounting post 241 is accommodated in an annular space between the mounting post 241a and the mounting wall 241b and holds the protruding end 22a of the spring 22 (see fig. 7) through the slit 241b3 of the mounting wall 241b to fixedly connect the spring 22 to the second positioning block 24. The height of the limiting wall 241b2 is greater than the height of the annular wall 241b1 for abutting against the limiting surface 21b (see fig. 4) of the button 21 to limit the axial movement depth of the button 21. The second substrate 241 further has a second limiting groove 241c provided around the mounting wall 241b, and an extension length of the second limiting groove 241c is set as needed. The second extension plate 242 has two axially protruding positioning pins 242a spaced apart from each other, and a buckle 242b is disposed between the two positioning pins 242 a. Wherein, the positioning pin 242a is inserted into the positioning hole 232a of the first positioning block 23 to be matched, and the buckle 242b is inserted into the clamping groove 232b of the first positioning block 23 to be matched, so as to fix the second positioning block 24 relative to the first positioning block 23.
The mechanism of cooperation of handle 1 and self-locking mechanism 2 will be described in detail below in conjunction with fig. 7. The side wall of the through hole 13a of the handle 1 has an axially extending guide groove 13a1 aligned with the locking groove 231b1 of the limit wall 231b of the first positioning block 23 shown in fig. 5, and the limit block 21c of the push button 21 can be accommodated in the guide groove 13a 1. The side of the enlarged portion 13 of the brush holder 1 facing the first positioning block 23 has a first limit key 13b axially extended, and the first limit key 13b is extended into a first limit groove 231c of the first positioning block 23 as shown in fig. 5 to limit the rotation angle of the enlarged portion 13. Similarly, the side of the enlarged portion 13 of the brush holder 1 facing the second positioning block 24 is provided with a second limit key (not shown) extending axially, and the second limit key extends into the second limit groove 241c shown in fig. 6 to limit the rotation angle of the enlarged portion 13 in a matching manner. In the folded state as shown in fig. 1A, the pressing surface 21A of the button 21 axially protrudes from the receiving hole 231A of the first positioning block 23, and the escape prevention block 21d (see fig. 4) abuts against the inner side wall of the first positioning block 23 to prevent the button 21 from escaping axially. At this time, the spring 22 has a rotational preload force about the axial direction so that the push button 21 attached thereto has a tendency to be rotated about the axial direction, the stopper 21c is accommodated in the locking groove 231b1 to be locked and fixed, and the stopper key 13b of the expanded portion 13 is located at one end of the stopper grooves 231c,241c and is thereby brought into stopper contact with the positioning blocks 23, 24. The pressing surface 21a of the button 21 is axially pressed by an external force until the limiting wall 241B2 abuts against the limiting surface 21B of the button 21 shown in fig. 4 to limit the axial movement depth of the button 21, the limiting block 21c is separated from the limitation of the locking groove 231B1 and enters the guide groove 13a1 of the expanding portion 13, at this time, the button 21 rotates under the action of the rotation preload force, so as to drive the expanding portion 13 to rotate, meanwhile, the limiting key 13B of the expanding portion 13 moves in the limiting grooves 231c,241c until reaching the other ends of the limiting grooves 231c,241c and abutting against the positioning blocks 23, 24 to realize limiting, at this time, the external force pressing the pressing surface 21a of the button 21 is released, the axial restoring force of the spring 22 drives the button 21 to axially move outwards, and the limiting block 21c enters the locking groove 231B1 from the guide groove 13a1 to be locked and fixed, and the use state as shown in fig. 1B is obtained. The pressing surface 21A of the push button 21 is axially pressed by an external force to overcome the axial restoring force of the spring 22, the stopper 21c is released from the restriction of the locking groove 231b1 again and enters into the guide groove 13a1 of the bulging portion 13, and simultaneously, an external force is applied to the handle body 11 in a tangential direction around the axial direction to overcome the restoring force of the spring 22 in the rotational direction, thereby driving the bulging portion 13 to rotate, and simultaneously, the stopper 21c moves in the stopper grooves 231c,241c until reaching one ends of the stopper grooves 231c,241c and being thereby brought into abutment against the positioning blocks 23, 24, at which time the external force driving the handle body 11 and the push button 21 is released, and the axial restoring force of the spring 22 drives the push button 21 to move axially outward, the stopper 21c enters into the locking groove 231b1 from the guide groove 13a1 to be locked and fixed, and returns to the folded state as shown in fig. 1A.
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and various modifications can be made to the above-described embodiment of the present invention. All simple, equivalent changes and modifications made in accordance with the claims and the specification of this application fall within the scope of the patent claims. The present invention is not described in detail in the conventional art.