CN217525461U - Electric toothbrush head with replaceable bristle head - Google Patents

Abstract

The utility model discloses a removable electronic toothbrush head of brush hair head, including brush-holder stud and brush hair head, brush hair head includes brush dish and brush hair, and the brush hair dress is on the brush dish, is equipped with the driving medium in the brush-holder stud, is equipped with a rotation seat in the brush-holder stud head, and a connecting axle outwards extends at the back of the brush dish, and the connecting axle is connected on rotating the seat with the axial shiftable circumference fixed mode, brush-holder stud head with still be equipped with between the connecting axle and can restrict connecting axle axial aversion or relieve the stop gear of connecting axle axial aversion restriction, the driving medium in the brush-holder stud drives the brush dish through rotating the seat and rotates or make a round trip just reverse rotation. Preferably, one limiting mechanism comprises a first limiting pin which is pivoted in the head of the brush rod, a limiting groove which is distributed along the radial direction is formed in the middle of the connecting shaft, a radial limiting convex part is arranged on the first limiting pin, and the first limiting pin is rotated to enable the radial limiting convex part to be matched with the limiting groove or separated from the limiting groove. The brush head of the utility model is replaceable, which effectively reduces the use cost of the electric toothbrush.

Description

Electric toothbrush head with replaceable bristle head

Technical Field

The utility model belongs to the technical field of electric toothbrush makes technology and specifically relates to an electric toothbrush head with a replaceable bristle head.

Background

The electric toothbrush makes the brush head rotate or vibrate at high frequency through the quick rotation or vibration of the motor core, so that the toothpaste is instantaneously decomposed into fine foams to deeply clean slits between teeth, and meanwhile, the vibration of the bristles can promote the blood circulation of the oral cavity and have a massage effect on gum tissues. Electric toothbrushes have begun to be increasingly accepted and used by the general public.

Current electric toothbrush usually includes electric toothbrush drive body and electric toothbrush head, and during the use, electric toothbrush head dress is on electric toothbrush drive body, and electric toothbrush drive body provides power for brush hair head on the electric toothbrush head produces rotation or high-frequency vibration. After the existing electric toothbrush head is assembled, the bristle heads can not be separated usually, for example, a Chinese utility model patent with the patent number of ZL201220407088.5 and the name of 'electric toothbrush head' is disclosed on 2013, 02, 13.A brush head comprises a brush rod and a brush disc with bristles, wherein the brush disc is arranged at the top end of the brush rod and is arranged on an installation end at the top end of the brush rod through a metal positioning pin and can swing within a swing angle of 20-35 degrees; be equipped with drive disk assembly in the brush-holder stud, drive disk assembly includes the installation pole that plastic materials made, be provided with the transmission shaft in the installation pole, install in the mounting hole of installation pole behind the spring of transmission shaft suit, the top of transmission shaft is provided with the swinger that can make brush dish horizontal hunting, the top of installation pole still is provided with a fixed pin, and the fixed pin can make the installation pole follow the fixed pin and carry out horizontal rotation as the axle center after installing in the brush-holder stud, the afterbody of installation pole is provided with the mounting hole of mountable drive disk assembly, makes drive disk assembly drive brush dish horizontal hunting under drive arrangement's drive. The brush disk of the electric toothbrush head can not be separated from the brush rod after being positioned by the metal positioning pin. When the bristles wear, the entire electric toothbrush head needs to be replaced. The use of electric toothbrushes is also costly.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a removable electric toothbrush head of brush hair head, its brush hair head is removable, effectively reduces electric toothbrush's use cost.

In order to achieve the above purpose, the technical scheme of the utility model is that: the utility model provides a removable electronic toothbrush head of brush hair head, includes brush-holder stud and brush hair head, and brush hair head includes brush dish and brush hair, and the brush hair dress is on the brush dish, and the brush-holder stud is hollow structure, is equipped with the driving medium in the brush-holder stud, is equipped with a rotation seat in the brush-holder stud head, and a connecting axle outwards extends at the back of the brush dish, and the connecting axle shifts circumference fixed mode with the axial and connects on rotating the seat, brush-holder stud head with still be equipped with between the connecting axle and can restrict the connecting axle axial and shift or relieve the stop gear of connecting axle axial shift restriction, the driving medium in the brush-holder stud drives the brush dish through rotating the seat and rotates or make a round trip just reverse rotation.

Preferably, the limiting mechanism comprises a first limiting pin which is pivoted in the head of the brush rod, the axial direction of the first limiting pin is parallel to the axial direction of the connecting shaft, a radially distributed limiting groove is formed in the middle of the connecting shaft, a radial limiting convex part is arranged on the first limiting pin, and the first limiting pin is rotated to enable the radial limiting convex part to be matched with the limiting groove or separated from the limiting groove.

The radial limiting convex part can be stably matched on the limiting groove through the tension of the tension spring; a bayonet is arranged at the rear end of the first limiting pin, a first through hole corresponding to the bayonet is formed in the rear end of the head of the brush rod, and a key penetrates through the first through hole to be inserted into the bayonet and can rotate the first limiting pin. This arrangement facilitates quick replacement of the bristle head.

Still further, be equipped with a spliced pole in the brush-holder stud head, the spliced pole with the axial of connecting axle parallels, extension spring one end is connected on the bayonet socket of first spacer pin, the other end is connected on the spliced pole on the brush-holder stud.

Still further, still be equipped with a articulated seat in the brush-holder stud head, first spacer pin middle part pin joint is in articulated seat, and first spacer pin rear end cooperation is in the first through-hole. This facilitates the mounting of the first limit pin.

In a further improvement, the head of the brush rod is connected with the brush rod body in a sleeving manner. The brush rod is convenient to manufacture.

In a further improvement, the rotating seat is further provided with a second through hole connected with the transmission piece.

Preferably, the rotating seat is provided with an outer cylindrical surface and a third through hole axially distributed along the outer cylindrical surface, the connecting shaft is inserted into the third through hole, and the head of the brush rod is provided with an inner cylindrical surface matched with the outer cylindrical surface.

Still further, a square groove is formed in the rear portion, corresponding to the third through hole, of the rotating seat, a square portion is arranged at the rear end of the connecting shaft, and the square portion is embedded in the square groove. Therefore, the connecting shaft is convenient to be fixedly connected with the rotating seat in the circumferential direction.

And furthermore, the head of the brush rod is also provided with a second limiting pin which is vertical to the axial direction of the connecting shaft, and the second limiting pin clamps the rotating seat so that the rotating seat can not be separated from the brush rod. This prevents the rotatable base from being removed from the head of the brush bar.

Preferably, the limiting mechanism comprises an elastic part, the rear end of the elastic part is connected to the rear part of the connecting shaft, a limiting convex part is arranged at the front end of the elastic part, a limiting through hole is formed in the head of the brush rod, the limiting convex part limits axial displacement of the connecting shaft when being matched with the limiting through hole, the limiting convex part is pressed down, and the limiting convex part is separated from the limiting through hole to remove axial displacement limitation of the connecting shaft. The limiting mechanism is simple in structure and convenient to assemble.

The brush rod is further improved, the rotating seat is provided with an outer cylindrical surface and fourth through holes axially distributed along the outer cylindrical surface, the connecting shaft is inserted into the fourth through holes, the head of the brush rod is provided with an inner cylindrical surface, and the inner cylindrical surface is matched with the outer cylindrical surface;

the outer surface of the rotating seat is also provided with a fifth through hole communicated with the fourth through hole, and the limiting convex part can extend out of the fifth through hole or be pressed into the fourth through hole;

and the head of the brush rod is also provided with a third limiting pin which is axially vertical to the connecting shaft, and the third limiting pin is inserted into the fifth through hole and clamps the rotating seat so that the rotating seat cannot be separated from the brush rod.

The utility model discloses owing to be equipped with a rotation seat in the brush-holder stud head, a connecting axle is outwards extended at the back to the brush-holder stud, and the connecting axle is connected on rotating the seat with the fixed mode of the removable circumference of axial, the brush-holder stud head with still be equipped with between the connecting axle and restrict the connecting axle axial and shift or remove the stop gear that the limiting of connecting axle axial was shifted, the driving medium in the brush-holder stud drives the brush-holder stud through rotating the seat and rotates or make a round trip just reverse rotation. When the limiting mechanism limits the axial displacement of the connecting shaft, the brush disc is fixedly connected with the rotating seat, and the whole electric toothbrush head can be normally used. When the limiting mechanism removes the limitation of axial displacement of the connecting shaft, the brush disc can be separated from the rotating seat, so that the brush disc with bristles can be replaced, namely, the brush head can be simply better, and the whole electric toothbrush head does not need to be replaced. Therefore, the use cost of the electric toothbrush is effectively reduced.

Drawings

FIG. 1 is a perspective view of a first embodiment of the present invention;

FIG. 2 is a perspective view of a brush bar of the hidden portion of FIG. 1;

FIG. 3 is a top view of a first embodiment of the present invention;

FIG. 4 isbase:Sub>A cross-sectional view A-A of FIG. 3;

FIG. 5 is a sectional view taken along line B-B of FIG. 3;

FIG. 6 is a perspective view of a brush bar according to a first embodiment of the present invention;

FIG. 7 is a perspective view of a rotary seat according to a first embodiment of the present invention;

FIG. 8 is a perspective view of a brush plate according to a first embodiment of the present invention;

fig. 9 is a perspective view of a second embodiment of the present invention;

FIG. 10 is a perspective view of the brush bar of FIG. 9, hidden from view;

fig. 11 is a top view of a second embodiment of the present invention;

FIG. 12 is a cross-sectional view C-C of FIG. 11;

FIG. 13 is a cross-sectional view D-D of FIG. 11;

FIG. 14 is a perspective view of a brush bar according to a second embodiment of the present invention;

FIG. 15 is a perspective view of a rotary base according to a second embodiment of the present invention;

fig. 16 is a perspective view of a brush plate according to a second embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

First embodiment, as shown in fig. 1 to 8, an electric toothbrush head with a replaceable brush head includes a brush rod 1 and a brush head, the brush head includes a brush disc 2 and brush bristles 21, the brush bristles 21 are planted on the brush disc 2, the brush bristles 21 are perpendicular to the outer end of the brush disc 2, the brush rod 1 is of a hollow structure, a transmission member 3 is installed in the brush rod 1, a rotating base 4 is installed in the head of the brush rod 1, a connecting shaft 22 extends outwards from the rear of the brush disc 2, the connecting shaft 22 is connected to the rotating base 4 in an axially displaceable circumferential fixing manner, a limiting mechanism 5 capable of limiting axial displacement of the connecting shaft 22 or removing axial displacement limitation of the connecting shaft 22 is further arranged between the head 11 of the brush rod 1 and the connecting shaft 22, the limiting mechanism 5 includes a first limiting pin 51, the first limiting pin 51 is pivoted in the head 11 of the brush rod 1, the axial direction of the first limiting pin 51 is parallel to the axial direction of the connecting shaft 22, a radially distributed limiting groove 221 is arranged in the middle of the connecting shaft 22, a radially limiting convex portion 511 is arranged on the first limiting pin 51, and the first limiting groove is rotated to enable the radial convex portion 221 to be matched with or separated from the limiting groove 511. When the radial limit projection 511 is fitted in the limit groove 221, the axial displacement of the connecting shaft 22 is limited; when the radial stopper protrusion 511 is disengaged from the stopper groove 221, the axial displacement restriction of the coupling shaft 22 is released.

The transmission piece 3 in the brush rod 1 is connected with the rotating seat 4 and then drives the brush disc 2 to rotate forwards and backwards. The transmission piece can also be connected with the rotating seat through a gear mechanism to enable the rotating seat 4 to rotate along the same direction, so that the brush disc 2 rotates along the same direction.

A tension spring 6 is further arranged between the first limit pin 51 and the brush rod 1, one end of the tension spring 6 is connected to the first limit pin 51, the other end of the tension spring 6 is connected to the brush rod 1, and the radial limit convex part 511 can be stably matched with the limit groove 221 through the tension force of the tension spring 6;

a bayonet 512 is arranged at the rear end of the first limit pin 51, a first through hole 111 corresponding to the bayonet 512 is arranged at the rear end of the head 11 of the brush holder 1, and a key is inserted into the first through hole 111 through the bayonet 512, so that the first limit pin 51 can rotate.

A connecting column 112 is arranged in the head 11 of the brush rod 1, the connecting column 112 is parallel to the axial direction of the connecting shaft 22, one end of the tension spring 6 is connected to the bayonet 512 of the first limit pin 51, and the other end of the tension spring is connected to the connecting column 112 on the brush rod 1.

A hinged seat 113 is further arranged in the head 11 of the brush rod 1, the middle part of the first limit pin 51 is pivoted on the hinged seat 113, and the rear end of the first limit pin 51 is matched in the first through hole 111.

The head 11 of the brush rod 1 is connected with the body 12 of the brush rod 1 in a sleeving manner.

The rotating seat 4 is further provided with a second through hole 41 connected with the transmission piece 3.

The rotating seat 4 has an outer cylindrical surface 42 and a third through hole 43 axially distributed along the outer cylindrical surface 42, the connecting shaft 22 is inserted into the third through hole 43, and the head 11 of the brush rod 1 is provided with an inner cylindrical surface 114, and the inner cylindrical surface 114 is matched with the outer cylindrical surface 42.

The rotating base 4 is provided with a square groove 44 at a rear portion corresponding to the third through hole 43, and a square portion 222 is provided at a rear end of the connecting shaft 22, and the square portion 222 is fitted in the square groove 44.

The head 11 of the brush rod 1 is also provided with a second limiting pin 7 which is axially vertical to the connecting shaft 22, and one end of the rotating seat 4 is clamped by the second limiting pin 7 so that the rotating seat 4 can not be separated from the brush rod 1.

The brush rod 1, the rotating seat 4 and the brush disc 2 can be formed by injection molding.

When this embodiment uses, whole electric toothbrush head pegs graft on electric toothbrush drive body, provides power through electric toothbrush drive body and drives driving medium 3 and make a round trip to rotate, and driving medium 3 rethread rotates seat 4 and drives brush dish 2 and make a round trip just reverse rotation, carries out normal use. When the bristles 21 are worn, the first limiting pin 51 is rotated by the bayonet 512 through the key inserted into the first through hole 111, the radial limiting convex part 511 is separated from the limiting groove 221, the axial displacement limitation of the connecting shaft 22 is removed, the worn bristles are detached, new bristles are loaded, the key is pulled out, the radial limiting convex part 511 is clamped into the limiting groove 221 under the action of the tension spring 6, the axial displacement of the connecting shaft 22 is limited again, and therefore the bristles are replaced. The electric toothbrush can be normally used without replacing the whole electric toothbrush head, and the use cost of the electric toothbrush is saved.

Second embodiment, fig. 9 to 16 show a power toothbrush head with a replaceable brush head, which is different from the first embodiment in that: the limiting mechanism 5 comprises an elastic part 5a, the rear end of the elastic part 5a is connected to the rear portion of the connecting shaft 22, the elastic part 5a and the connecting shaft 22 are connected into a whole, a limiting convex part 51a is arranged at the front end of the elastic part 5a, a limiting through hole 11a is formed in the head 11 of the brush rod 1, the limiting convex part 51a is matched on the limiting through hole 11a to limit the axial displacement of the connecting shaft 22, the limiting convex part 51a is pressed down, and the limiting convex part 51a is separated from the limiting through hole 11a to relieve the axial displacement limitation of the connecting shaft 22.

The rotating seat 4 is provided with an outer cylindrical surface 4a and a fourth through hole 4b axially distributed along the outer cylindrical surface 4a, the connecting shaft 22 is inserted into the fourth through hole 4b, the head 11 of the brush rod 1 is provided with an inner cylindrical surface 11b, and the inner cylindrical surface 11b is matched with the outer cylindrical surface 4 a;

the outer surface of the rotating seat 4 is further provided with a fifth through hole 4c communicated with the fourth through hole 4b, and the limiting convex part 51a can extend out of the fifth through hole 4c or be pressed into the fourth through hole 4b;

the head 11 of the brush rod 1 is further provided with a third limit pin 11c which is axially perpendicular to the connecting shaft 22, and the third limit pin 11c is inserted into the fifth through hole 4c and clamps the rotating seat 4 so that the rotating seat 4 cannot be separated from the brush rod 1.

The brush disc 2, the connecting shaft 22 and the elastic part 5a can be integrally formed by injection molding, and the rotating seat 4 can also be formed by injection molding. The rotating base 4 is also provided with a second through hole 41 connected with the transmission member 3.

When the brush head needs to be replaced, the elastic part 5a is pressed down by the tool through the limiting through hole 11a, the elastic part 5a is pressed into the fourth through hole 4b, the axial displacement limitation of the connecting shaft 22 is removed, the brush disc 2 with the worn bristles 21 can be detached, and then the new brush disc 2 with the bristles 21 is replaced, after the connecting shaft 22 is inserted into the fourth through hole 4b, due to the effect of the elastic part 5a, the limiting convex part 51a is matched on the limiting through hole 11a, the axial displacement of the connecting shaft 22 is limited, and the brush head can be normally used.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (12)

1. The utility model provides a removable electronic toothbrush head of brush hair head, includes brush-holder stud and brush hair head, and brush hair head is including brush dish and brush hair, and the brush hair dress is on the brush dish, and the brush-holder stud is hollow structure, is equipped with the driving medium in the brush-holder stud, its characterized in that: the brush rod head is internally provided with a rotating seat, the back of the brush disk extends outwards to form a connecting shaft, the connecting shaft is connected to the rotating seat in an axially displaceable circumferential fixed mode, a limiting mechanism capable of limiting the axial displacement of the connecting shaft or relieving the axial displacement limitation of the connecting shaft is further arranged between the brush rod head and the connecting shaft, and a transmission piece in the brush rod drives the brush disk to rotate or rotate back and forth through the rotating seat.

2. A brush head replaceable electric toothbrush head according to claim 1, wherein: the limiting mechanism comprises a first limiting pin which is pivoted in the head of the brush rod, the axial direction of the first limiting pin is parallel to the axial direction of the connecting shaft, a limiting groove which is distributed along the radial direction is arranged in the middle of the connecting shaft, a radial limiting convex part is arranged on the first limiting pin, and the first limiting pin is rotated to enable the radial limiting convex part to be matched with the limiting groove or separated from the limiting groove.

3. A brush head replaceable electric toothbrush head according to claim 2, wherein: a tension spring is arranged between the first limiting pin and the brush rod, one end of the tension spring is connected to the first limiting pin, the other end of the tension spring is connected to the brush rod, and the radial limiting convex part can be stably matched with the limiting groove through the tension force of the tension spring;

a bayonet is arranged at the rear end of the first limiting pin, a first through hole corresponding to the bayonet is formed in the rear end of the head of the brush rod, and a key penetrates through the first through hole to be inserted into the bayonet and can rotate the first limiting pin.

4. A brush head replaceable electric toothbrush head according to claim 3, wherein: the brush rod head is internally provided with a connecting column, the connecting column is parallel to the axial direction of the connecting shaft, one end of the tension spring is connected to the bayonet of the first limiting pin, and the other end of the tension spring is connected to the connecting column on the brush rod.

5. A brush head replaceable electric toothbrush head according to claim 3, wherein: still be equipped with a articulated seat in the brush-holder stud head, first spacer pin middle part pin joint is in articulated seat, and first spacer pin rear end cooperation is in the first through-hole.

6. An electric toothbrush head with a replaceable bristle head as claimed in claim 1, wherein: the brush rod head is connected with the brush rod body in a sleeving manner.

7. A brush head replaceable electric toothbrush head according to claim 1, wherein: and a second through hole connected with the transmission piece is further formed in the rotating seat.

8. An electric toothbrush head with a replaceable brush head according to any one of claims 1 to 7, wherein: the rotating seat is provided with an outer cylindrical surface and a third through hole which is axially distributed along the outer cylindrical surface, the connecting shaft is inserted into the third through hole, the head of the brush rod is provided with an inner cylindrical surface, and the inner cylindrical surface is matched with the outer cylindrical surface.

9. An electric toothbrush head with a replaceable bristle head according to claim 8, wherein: the rotating seat is provided with a square groove at the rear part corresponding to the third through hole, the rear end of the connecting shaft is provided with a square part, and the square part is embedded in the square groove.

10. An electric toothbrush head with a replaceable bristle head as claimed in claim 8, wherein: the head of the brush rod is also provided with a second limiting pin which is axially vertical to the connecting shaft, and the second limiting pin clamps the rotating seat so that the rotating seat cannot be separated from the brush rod.

11. A brush head replaceable electric toothbrush head according to claim 1, wherein: the limiting mechanism comprises an elastic part, the rear end of the elastic part is connected to the rear portion of the connecting shaft, a limiting convex part is arranged at the front end of the elastic part, a limiting through hole is formed in the head of the brush rod, the limiting convex part is matched on the limiting through hole to limit axial displacement of the connecting shaft, the limiting convex part is pressed down, and the limiting convex part is separated from the limiting through hole to relieve axial displacement limitation of the connecting shaft.

12. A brush head replaceable electric toothbrush head according to claim 11, wherein: the rotating seat is provided with an outer cylindrical surface and a fourth through hole axially distributed along the outer cylindrical surface, the connecting shaft is inserted into the fourth through hole, the head of the brush rod is provided with an inner cylindrical surface, and the inner cylindrical surface is matched with the outer cylindrical surface;

the outer surface of the rotating seat is also provided with a fifth through hole communicated with the fourth through hole, and the limiting convex part can extend out of the fifth through hole or be pressed into the fourth through hole;

and the head of the brush rod is also provided with a third limiting pin which is axially vertical to the connecting shaft, and the third limiting pin is inserted into the fifth through hole and clamps the rotating seat so that the rotating seat cannot be separated from the brush rod.

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