CN211381904U

CN211381904U - Electric toothbrush

Info

Publication number: CN211381904U
Application number: CN201921500648.XU
Authority: CN
Inventors: 李冬保; 李保正
Original assignee: Jiangxi Ruishengte Technology Co ltd
Current assignee: Jiangxi Ruishengte Technology Co ltd
Priority date: 2019-09-10
Filing date: 2019-09-10
Publication date: 2020-09-01
Anticipated expiration: 2029-09-10

Abstract

The utility model discloses an electric toothbrush, including the brush head and can dismantle the handle of being connected with the brush head, the handle includes the handle body and with this body coupling of handle and outstanding in this external drive shaft of handle, the lateral wall of drive shaft is equipped with first lug, the brush head is including the first shell of brush that has the inner chamber and locating the connecting sleeve in the inner chamber, the connecting sleeve is equipped with two flutings along the circumference interval and separates into the main part with connecting sleeve's one end and the buckle portion of being connected with the main part, the fluting extends towards the direction of keeping away from the handle body from the one end that connecting sleeve is close to the handle body, buckle portion is located between two flutings, the concave first recess that is equipped with first lug complex of inside wall of buckle portion, the brush head is connected with the handle buckle through the. The electric toothbrush of the utility model has the advantages of long service life, stable connection, simple structure and convenient disassembly and assembly.

Description

Electric toothbrush

Technical Field

The utility model relates to the field of articles for daily use, especially, relate to an electric toothbrush.

Background

The brush head is long-term used and can lead to brush head wearing and tearing, bacterium accumulation, clean effect not good, needs periodic change brush head, consequently needs a detachable connection structure to connect brush head and handle, and the connection structure between current brush head and the handle ubiquitous structure is complicated and the inconvenient problem of dismouting.

Due to the fact that the requirement for plugging and unplugging the electric toothbrush is high, if the brush head is assembled too tightly, the brush head is not easy to replace, and the electric toothbrush is easy to damage due to too large force in the replacement process; when the brush head is assembled loosely, the brush head collides with parts such as the driving shaft, and the like, so that large noise is generated, and the user experience is influenced.

Some electric toothbrushes adopt that the clamping block is arranged in the brush head shell and connected with the driving shaft, so that the structure is complex, the brush head is not stable enough, and the use is not flexible and convenient.

Some electric toothbrushes are fixed with a driving shaft by adopting an opening on a brush head shell, so that the electric toothbrushes are not beautiful enough, are easy to feed water and have a reduced service life.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide an electric toothbrush which is stable in connection between a brush head and a handle, simple in structure and convenient to disassemble and assemble.

The purpose of the utility model is realized by adopting the following technical scheme:

an electric toothbrush comprises a brush head and a handle detachably connected with the brush head, wherein the handle comprises a handle body and a driving shaft which is connected with the handle body and protrudes out of the handle body, the outer side wall of the driving shaft is provided with a first lug, the brush head comprises a brush head shell with an inner cavity and a connecting sleeve arranged in the inner cavity, the connecting sleeve is provided with two slots at intervals along the circumferential direction so as to divide one end of the connecting sleeve into a main body part and a buckling part connected with the main body part, the slot extends from one end of the connecting sleeve close to the handle body to the direction far away from the handle body, the buckling part is positioned between the two slots, a first groove matched with the first convex block is concavely arranged on the inner side wall of the buckling part, the brush head is connected with the handle in a buckling mode through the matching of the first protruding block and the first groove.

Furthermore, the buckling part comprises a base plate, two first side plates and a second side plate, the first side plates are respectively bent and extended from the two opposite sides of the base plate towards the driving shaft, the second side plates are bent and extended from one end, close to the handle body, of the base plate towards the driving shaft, and the base plate, the two first side plates and the second side plates jointly enclose to form the first groove.

Further, the second side plate is close to the tip of handle body is formed with the confession of being convenient for first lug embedding first dodge the inclined plane in the first recess, the second side plate is kept away from the tip of handle body is formed with the confession of being convenient for first lug is followed the second that withdraws from in the first recess dodges the inclined plane.

Further, the first avoidance inclined plane is an inclined plane or a curved surface.

Further, the second avoidance inclined plane is an inclined plane or a curved surface.

Furthermore, the inner side wall of the main body part is concavely provided with a second groove, the driving shaft is provided with a second lug matched with the second groove, and the first lug and the second lug are arranged at intervals along the circumferential direction of the driving shaft.

Furthermore, a third avoiding inclined surface which is convenient for the second lug to be embedded into the second groove is formed at one end, close to the handle body, of the main body part, and the second groove is axially formed along the main body part from one side, far away from the handle body, of the third avoiding inclined surface.

Furthermore, one end, far away from the handle body, of the second protruding block is abutted against the groove wall, far away from the third avoidance inclined plane, of the second groove.

Further, the central axis of the connecting sleeve is collinear with the central axis of the drive shaft.

Furthermore, the outer side wall of the buckling part close to one end of the handle body and the inner side wall of the brush head shell are arranged at intervals.

Compared with the prior art, the beneficial effects of the utility model reside in that: thereby divide into main part and clamping part through set up the fluting on connecting sleeve with connecting sleeve's one end, be equipped with first recess in the clamping part, be equipped with first lug in the drive shaft, the brush head is connected with the handle buckle through the cooperation of first recess and first lug to have following advantage:

1. the surface of the brush head shell is not required to be grooved, so that the sealing and waterproof performance is improved, the service life of the toothbrush is prolonged, the lines on the surface of the brush head are smoother, and the attractiveness is improved;

2. the connecting structure is arranged in the inner cavity of the brush head shell, and compared with the connecting structure arranged in the brush head shell, the deformation direction of the connecting structure has larger degree of freedom;

3. structural design is reasonable ingenious, and simple structure is stable, need not use fasteners such as screw, moreover owing to there is the slotted existence, makes clamping part take place to warp very easily when the dismouting, the dismouting of the brush head of being convenient for.

Drawings

Fig. 1 is a schematic structural view of an electric toothbrush according to an embodiment of the present invention;

FIG. 2 is a partially exploded schematic view of the powered toothbrush shown in FIG. 1;

FIG. 3 is an enlarged view of a portion of FIG. 2 at B;

FIG. 4 is a schematic view of the structure of the housing of the brush head shown in FIG. 2;

FIG. 5 is a schematic view of the coupling sleeve shown in FIG. 2;

FIG. 6 is an enlarged view of a portion of FIG. 1 at A;

FIG. 7 is a cross-sectional view taken along line D-D of FIG. 6;

FIG. 8 is a cross-sectional view taken along line C-C of FIG. 6;

fig. 9 is a partial enlarged view at E in fig. 8.

In the figure: 100. an electric toothbrush; 10. a brush head; 20. a handle; 30. an inner cavity; 21. a handle body; 22. a drive shaft; 11. a brush head housing; 12. a connecting sleeve; 13. grooving; 14. a main body portion; 15. a fastening part; 151. a first groove; 221. a first bump; 152. a substrate; 153. a first side plate; 154. a second side plate; 1541. a first avoidance slope; 1542. a second avoidance slope; 141. a second groove; 222. a second bump; 142. and a third avoidance inclined plane.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

It should be noted that all the directional indicators (such as upper, lower, left, right, front, back, inner, outer, top, bottom … …) in the embodiments of the present invention are only used to explain the relative position between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

It will also be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Referring to fig. 1 to 9, an electric toothbrush 100 according to an embodiment of the present invention includes a toothbrush head 10 and a handle 20 detachably connected to the toothbrush head 10, the handle 20 includes a handle body 21 and a driving shaft 22 protruding from the handle body 21, the handle body 21 is configured to be held by a user conveniently, a vibration motor is disposed in the handle body 21 and can output high-frequency vibration after power supply, the driving shaft 22 is connected to an output shaft of the vibration motor, or the driving shaft 22 is an output shaft of the vibration motor, the toothbrush head 10 includes a toothbrush head housing 11 and a connecting sleeve 12, bristles for cleaning teeth are disposed on the toothbrush head housing 11, an inner cavity 30 is disposed inside the toothbrush head housing 11, the connecting sleeve 12 is disposed in the inner cavity 30, a central axis of the connecting sleeve 12 is collinear with a central axis of the driving shaft 22, the connecting sleeve 12 and the toothbrush head housing 11 may be integrally formed or may, the connecting sleeve 12 is provided with two slots 13 at intervals along the circumferential direction, so that the end of the connecting sleeve 12 close to the handle body 21 is divided into a main body part 14 and a buckling part 15, the slots 13 extend from the end of the connecting sleeve 12 close to the handle body 21 towards the direction far away from the handle body 21, the buckling part 15 is located between the two slots 13, namely, the buckling part 15 is arranged in a structure which is connected with one end of the main body part 14 and separated from the other end, a first groove 151 is concavely arranged on the inner side wall of the buckling part 15, a first bump 221 is oppositely arranged on the driving shaft 22, and the brush head 10 is in buckling connection with the handle 20 through the matching of the first bump 221 and the first groove 151.

During assembly, the driving shaft 22 penetrates through the connecting sleeve 12, the first bump 221 contacts the buckling part 15 and then presses the buckling part 15 outwards, due to the existence of the slot 13, the buckling part 15 is easy to deform, the buckling part 15 is pressed to generate outward deformation, the first bump 221 is embedded into the first groove 151 and then is pressed to disappear, the buckling part 15 automatically resets under the action of elasticity of itself and is buckled with the driving shaft 22, and therefore the brush head 10 is buckled with the handle 20. Compared with the traditional electric toothbrush 100, the electric toothbrush 100 in the embodiment does not need to be provided with the groove 13 on the surface of the brush head shell 11, thereby improving the sealing and waterproof performance and also increasing the aesthetic property of the electric toothbrush 100; the buckle structure is arranged in the brush head shell 11, so that the deformation direction of the brush head shell has greater freedom degree; meanwhile, the buckle structure is reasonable and ingenious in design, simple and stable in structure, fasteners such as screws are not needed, and the brush head 10 is convenient to disassemble and assemble.

It is understood that the number of the first protrusions 221 may be one, two or more, and preferably the first protrusions 221 are equally spaced along the circumference of the driving shaft 22, and the number of the first grooves 151 is the same as the number of the first protrusions 221. Preferably, the number of the first bumps 221 is one, so that the manufacturing process is simpler, and the production efficiency and yield are higher.

Preferably, the fastening portion 15 includes a base plate 152, two first side plates 153 bent and extended from two opposite sides of the base plate 152 toward the driving shaft 22, and a second side plate 154 bent and extended from one end of the base plate 152 close to the handle body 21 toward the driving shaft 22, wherein the base plate 152, the two first side plates 153, and the second side plate 154 together enclose to form a first groove 151.

The two first side plates 153 and the second side plates 154 can both play a role in limiting, the two first side plates 153 can prevent the driving shaft 22 from rotating along the circumferential direction, and the second side plates 154 can prevent the first protrusions 221 from slipping out of the first grooves 151, so that the reliability of the electric toothbrush 100 is improved.

Preferably, the end of the second side plate 154 close to the handle body 21 is formed with a first escape slope 1541 for facilitating the first protrusion 221 to be inserted into the first groove 151, and the end of the second side plate 154 away from the handle body 21 is formed with a second escape slope 1542 for facilitating the first protrusion 221 to be withdrawn from the first groove 151.

When the first protrusion 221 is inserted into the first groove 151, the first protrusion 221 may press the first avoiding inclined surface 1541 to deform the fastening portion 15 outwards, that is, to enlarge the opening of the connecting sleeve 12, thereby facilitating the installation of the brush head 10; when the first protrusion 221 is withdrawn from the first groove 151, the first protrusion 221 may press the second escape slope 1542, and also deform the locking portion 15 outward, so that the opening of the connecting sleeve 12 is enlarged, thereby facilitating the removal of the toothbrush head 10.

Preferably, the first avoiding slant 1541 may be an inclined plane or a curved surface, and the second avoiding slant 1542 may also be an inclined plane or a curved surface. That is, the second side plate 154 may be trapezoidal, triangular, semicircular, or other irregular shape.

Preferably, the inner side wall of the main body 14 is concavely provided with a second groove 141, the driving shaft 22 is provided with a second protrusion 222 matched with the second groove 141, and the first protrusion 221 and the second protrusion 222 are arranged at intervals along the axial direction of the driving shaft 22.

Through the second lug 222 and the second groove 141 which are matched with each other, the connection between the brush head 10 and the handle 20 is more stable and reliable, and meanwhile, the second lug 222 and the second groove 141 also have the guiding function, so that the brush head 10 is further convenient to disassemble and assemble.

It is understood that the number of the second protrusions 222 may be one, two or more, and the number of the second grooves 141 is adapted to the number of the second protrusions 222.

Preferably, a third avoiding inclined surface 142 for facilitating the second protrusion 222 to be embedded into the second groove 141 is formed at one end of the main body portion 14 close to the handle body 21, and the second groove 141 is formed along the axial direction of the main body portion 14 from one side of the third avoiding inclined surface 142 away from the handle body 21.

By providing the third avoiding inclined surface 142 on the main body portion 14, the second groove 141 extends axially along the main body portion 14 from the side of the third avoiding inclined surface 142 away from the handle body 21, that is, the end portion of the second groove 141 close to the third avoiding inclined surface 142 is not blocked by a protruding portion, so that the second protrusion 222 can be conveniently embedded into the second groove 141 and withdrawn from the second groove 141, and the opening of the connecting sleeve 12 is increased equivalently by the provision of the third avoiding inclined surface 142, so that the second protrusion 222 can be further conveniently embedded into the second groove 141.

It is understood that the third avoiding ramp 142 may be an inclined plane or a curved plane.

Preferably, one end of the second protrusion 222 away from the handle body 21 abuts against a groove wall of the second groove 141 away from the third escape ramp 142.

The groove wall of the second groove 141 far from the third avoiding inclined surface 142 can limit the second bump 222, and thus, the two first side plates 153 of the fastening part 15 can prevent the brush head 10 from rotating around the circumferential direction of the driving shaft 22, the groove wall of the second groove 141 far from the third avoiding inclined surface 142 and the second avoiding inclined surface 1542 can prevent the brush head 10 from moving along the axial direction of the driving shaft 22, that is, the brush head 10 cannot move after being installed on the handle 20, thereby avoiding the assembly loosening to cause the collision between the brush head 10 and the driving shaft 22 and the like, and causing loud noise, and affecting the user experience.

Preferably, the outer side wall of the fastening part 15 near one end of the handle body 21 is spaced from the inner side wall of the brush head housing 11. Thereby leaving a space necessary for the deformation of the catching portion 15.

Specifically, in the present embodiment, the outer side wall of the end of the fastening portion 15 away from the handle body 21 abuts against the inner side wall of the brush head housing 11, and most of the whole fastening portion 15 is spaced from the brush head housing 11, and only a small portion abuts against the brush head housing 11, preferably, the axial length of the spaced portion is 3-10 times that of the abutting portion.

The specific disassembly and assembly process is as follows:

during assembly, the driving shaft 22 penetrates through the connecting sleeve 12, after the first protruding block 221 abuts against the first avoidance inclined surface 1541, the first protruding block 221 can outwards press the buckling part 15, so that the buckling part 15 is outwards deformed, the first protruding block 221 can be smoothly embedded into the first groove 151, when the first protruding block 221 completely enters the first groove 151, the buckling part 15 disappears after being pressed, the buckling part 15 automatically resets under the action of self elasticity, at the moment, the end part, close to the handle body 21, of the first protruding block 221 abuts against the second avoidance inclined surface 1542, the groove wall, far away from the third avoidance inclined surface 142, of the second protruding block 222 and the second groove 141 abuts against each other, the driving shaft 22 cannot axially move along the driving shaft, and assembly is completed; when the toothbrush head 10 or the handle 20 is removed, the first protrusion 221 on the driving shaft 22 presses the second avoiding inclined surface 1542 to deform the buckling part 15 outward, so that the first protrusion 221 exits from the first groove 151, and the end of the second groove 141 close to the third avoiding inclined surface 142 is not blocked by a protruding part and can smoothly exit from the second groove 141, so that the first protrusion 221 and the first groove 151 can be removed after being disconnected.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. An electric toothbrush comprises a brush head and a handle detachably connected with the brush head, wherein the handle comprises a handle body and a driving shaft which is connected with the handle body and protrudes out of the handle body, it is characterized in that the outer side wall of the driving shaft is provided with a first lug, the brush head comprises a brush head shell with an inner cavity and a connecting sleeve arranged in the inner cavity, the connecting sleeve is provided with two slots at intervals along the circumferential direction so as to divide one end of the connecting sleeve into a main body part and a buckling part connected with the main body part, the slot extends from one end of the connecting sleeve close to the handle body to the direction far away from the handle body, the buckling part is positioned between the two slots, a first groove matched with the first convex block is concavely arranged on the inner side wall of the buckling part, the brush head is connected with the handle in a buckling mode through the matching of the first protruding block and the first groove.

2. The electric toothbrush according to claim 1, wherein the fastening portion comprises a base plate, two first side plates respectively extending from two opposite sides of the base plate toward the driving shaft, and a second side plate extending from one end of the base plate close to the handle body toward the driving shaft, wherein the base plate, the two first side plates, and the second side plate together enclose the first groove.

3. The powered toothbrush as defined in claim 2, wherein the end of the second side plate adjacent to the handle body is formed with a first relief ramp for facilitating the insertion of the first tab into the first recess, and the end of the second side plate distal from the handle body is formed with a second relief ramp for facilitating the withdrawal of the first tab from the first recess.

4. The powered toothbrush of claim 3, wherein the first escape ramp is an inclined plane or a curved surface.

5. The electric toothbrush according to claim 3, wherein the second escape ramp is an inclined plane or a curved surface.

6. The electric toothbrush according to claim 1, wherein a second groove is recessed in an inner sidewall of the main body, a second protrusion is provided on the driving shaft to be engaged with the second groove, and the first protrusion and the second protrusion are spaced apart from each other in a circumferential direction of the driving shaft.

7. The electric toothbrush according to claim 6, wherein a third avoiding inclined surface for allowing the second protrusion to be inserted into the second groove is formed at one end of the main body portion close to the handle body, and the second groove is axially opened along the main body portion from a side of the third avoiding inclined surface away from the handle body.

8. The electric toothbrush of claim 7, wherein an end of the second projection distal from the handle body abuts a groove wall of the second recess distal from the third relief ramp.

9. The powered toothbrush of claim 1, wherein a central axis of said connecting sleeve is collinear with a central axis of said drive shaft.

10. The powered toothbrush of claim 1, wherein an outer sidewall of the latch portion adjacent the handle body end is spaced from an inner sidewall of the brushhead housing.