Electric toothbrush replacement head and electric toothbrush

Abstract

The invention provides an electric toothbrush replacement head and an electric toothbrush, the electric toothbrush replacement head comprises a brush head, one end of the brush head is provided with a first cavity, a tail plug is arranged in the first cavity, and the tail plug is provided with a second cavity; a first clamping block is arranged on the inner wall of the second cavity, a first tail cover elastic protruding point is arranged on the first clamping block, a limiting bone is arranged on one side of the first clamping block, a second clamping block is arranged at one end of the limiting bone, and a second tail cover elastic protruding point is arranged on the second clamping block. A third clamping block is arranged at one end of the first clamping block, and a tail cover elastic buckle is arranged at one end of the third clamping block. The replacement head of the electric toothbrush and the electric toothbrush are convenient for a user to use, convenient to disassemble, clean and disinfect, more suitable in plugging and unplugging hand feeling, capable of improving the experience of difficult plugging and unplugging, and more in line with the use habits and better experience of the public.

Description

Technical Field

[0001] The invention relates to the field of electric toothbrushes, and in particular to an electric toothbrush replacement head and an electric toothbrush. Background Art

[0002] With the rapid development of science and technology, toothbrushes are also being updated, from manual toothbrushes to electric toothbrushes, which has become an inevitable trend. The original intention of electric toothbrushes was to design and develop for those with limited mobility or lazy people. Later, they gradually became popular and anyone can use them. Turn on the electric toothbrush button to automatically clean teeth, and there are multiple cleaning modes, which is very convenient. For a normal electric toothbrush, the brush head and the output shaft are interference fit, and the brush head moves synchronously with the reciprocating vibration of the motor to clean the teeth. However, this type of electric toothbrush with a brush head in normal working mode is prone to toothpaste splashing before brushing, and foam splashing after the brush head of the electric toothbrush is extended out of the mouth after the foam is generated during brushing, resulting in a poor user experience. Summary of the invention

[0003] The purpose of the present invention is to provide an electric toothbrush replacement head and an electric toothbrush, which are convenient for users to use, easy to disassemble, clean and disinfect, have a more suitable plugging and unplugging feel, improve the experience of difficult plugging and unplugging, are more in line with the public's usage habits and provide a better experience.

[0004] To achieve the above object, the present invention provides an electric toothbrush replacement head, comprising a brush head, one end of the brush head is provided with a first cavity, a tail plug is provided in the first cavity, and a second cavity is provided on the tail plug;

[0005] A first clamping block is arranged on the inner wall of the second cavity, a first tail cover elastic convex point is arranged on the first clamping block, a limit bone is arranged on one side of the first clamping block, a second clamping block is arranged at one end of the limit bone, and a second tail cover elastic convex point is arranged on the second clamping block;

[0006] A third clamping block is disposed at one end of the first clamping block, and a tail cover elastic buckle is disposed at one end of the third clamping block.

[0007] Preferably, a motor shaft is arranged in the tail plug, the tail plug is located at one end of the motor shaft, and a motor is arranged at the other end of the motor shaft;

[0008] The motor shaft is provided with a first groove, and the first groove is connected to the elastic buckle of the tail cover.

[0009] Preferably, the first tail cover elastic protrusion and the second tail cover elastic protrusion are respectively located on two sides of the motor shaft.

[0010] Preferably, a convex ring is provided at one end of the first clamping block and the second clamping block, and the convex ring is connected to both the first clamping block and the second clamping block; a third groove is provided at one end of the brush head, and the convex ring is located at the third groove.

[0011] Preferably, first through holes are provided on both sides of the first clamping block, and second grooves are provided at one end of the first through hole and located on both sides of the first clamping block.

[0012] Preferably, the convex ring is connected to a base arranged on one side thereof, the base is also connected to a second clamping block, a second through hole is provided on the base, the third clamping block is located at the second through hole, a connecting structure is provided on the first clamping block, and the connecting structure is connected to the base.

[0013] Preferably, the outer wall of the tail plug is provided with a plurality of first protrusions, and the first protrusions are located on the base.

[0014] Preferably, the limiting bone is located on the inner wall of the first cavity.

[0015] Preferably, a distance is set between the first card block and the third card block.

[0016] An electric toothbrush comprises an electric toothbrush replacement head.

[0017] Therefore, the present invention adopts the above-mentioned electric toothbrush replacement head and electric toothbrush, and the technical effects are as follows:

[0018] (1) The tail plug is injection molded with POM material with good wear resistance, and the first clamp block, the second clamp block and the third clamp block with elasticity are designed on both sides of the tail plug, avoiding the complex structure of using redundant hardware pieces on the market and saving unnecessary costs.

[0019] (2) The elasticity of the first, second and third blocks of the tail plug can absorb the excess noise in the structural gap, making the user experience more comfortable. There is elastic compensation to fill the gaps in the structural wear, and there will be no bad experience of loud noise due to the end of life.

[0020] (3) The first, second and third clamps are designed on the tail plug to extend the life of the replacement toothbrush head and improve fatigue resistance. When the toothbrush head is fully charged, the vibration amplitude is relatively large, which can absorb excess or redundant energy without causing tingling or damage to the gums, making the brushing experience more comfortable.

[0021] (4) The first clamping block and the second clamping block of the tail plug are designed with a first tail cover elastic protrusion and a first tail cover elastic protrusion. The first tail cover elastic protrusion and the first tail cover elastic protrusion pre-press the motor shaft to prevent the motor shaft from tilting, thereby fixing the motor shaft and preventing the motor shaft from rotating, thereby achieving the purpose of tightening.

[0022] (5) An elastic buckle of the tail cap is added to the lower end of the hard rubber of the tail plug to prevent the toothbrush head from automatically loosening toward the motor shaft during working vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of an electric toothbrush replacement head and an electric toothbrush according to the present invention;

[0024] Figure 2 is a schematic diagram of the tail plug;

[0025] Figure 3 This is a schematic diagram of the tail plug from another angle;

[0026] Figure 4 This is a cross-sectional view of the assembly of the brush head, tail plug and motor shaft.

[0027] Reference numerals

[0028] 1. Brush head; 2. Tail plug; 3. First clamping block; 4. Elastic convex point of first tail cover; 5. Limit bone; 6. Second clamping block; 7. Elastic convex point of second tail cover; 8. Third clamping block; 9. Elastic buckle of tail cover; 10. Motor shaft; 11. Motor; 12. First groove; 13. Convex ring; 14. Third groove; 15. Second groove; 16. First through hole; 17. Second through hole; 18. Base; 19. Connecting structure; 20. First protrusion. DETAILED DESCRIPTION

[0029] The technical solution of the present invention is further described below through the accompanying drawings and embodiments.

[0030] Unless otherwise defined, technical or scientific terms used in the present invention shall have the common meanings understood by one having ordinary skills in the field to which the present invention belongs.

[0031] Embodiment 1

[0032] An electric toothbrush replacement head comprises a brush head 1, a first cavity is arranged at one end of the brush head 1, a tail plug 2 is arranged in the first cavity, and a second cavity is arranged on the tail plug 2;

[0033] A first clamping block 3 is arranged on the inner wall of the second cavity, a first tail cover elastic protrusion 4 is arranged on the first clamping block 3, a limiting bone 5 is arranged on one side of the first clamping block 3, a second clamping block 6 is arranged at one end of the limiting bone 5, and a second tail cover elastic protrusion 7 is arranged on the second clamping block 6.

[0034] The first tail cover elastic protrusion 4 and the second tail cover elastic protrusion 7 have a pressing effect: the first tail cover elastic protrusion 4 and the second tail cover elastic protrusion 7 are respectively located on both sides of the motor shaft 10, and press the motor shaft 10 to achieve positioning and pressing.

[0035] A third clamping block 8 is disposed at one end of the first clamping block 3 , and a tail cover elastic buckle 9 is disposed at one end of the third clamping block 8 to prevent the toothbrush head 1 from automatically loosening toward the motor shaft 10 during working vibration.

[0036] The tail plug 2 is injection molded with POM material having good wear resistance, and a first clamping block 3, a second clamping block 6 and a third clamping block 8 with elasticity are designed on both sides of the tail plug 2, avoiding the complex structure of using redundant hardware pieces on the market and saving unnecessary costs.

[0037] The elasticity of the first block 3, the second block 6 and the third block 8 of the tail plug 2 can absorb the excess noise in the structural gap, making the use experience more comfortable. There is elastic compensation to fill the gap of structural wear, and there will be no bad experience of loud noise due to the end of life.

[0038] The tail plug 2 is designed with a first card block 3, a second card block 6 and a third card block 8, so that the replacement toothbrush head 1 has a longer life and strong fatigue resistance. When the toothbrush head 1 is fully charged, the vibration amplitude is relatively large, which can absorb excess or redundant energy, and will not cause tingling or damage to the gums, making the brushing experience more comfortable.

[0039] A motor shaft 10 is arranged in the tail plug 2, and the tail plug 2 is located at one end of the motor shaft 10. A motor 11 is arranged at the other end of the motor shaft 10. The motor 11 provides power, and the tail plug 2 presses the motor shaft 10 and cushions the vibration, serving as an interface of the motor shaft 10, so as to facilitate the replacement of the brush head 1 assembly.

[0040] The motor shaft 10 is provided with a first groove 12 , and the first groove 12 is connected to the tail cover elastic buckle 9 .

[0041] The first tail cover elastic protrusion 4 and the second tail cover elastic protrusion 7 are respectively located on both sides of the motor shaft 10. The first groove 12 is arranged on the motor shaft 10 and cooperates with the tail cover elastic buckle 9 to prevent the motor shaft 10 from sliding upward.

[0042] A convex ring 13 is provided at one end of the first clamping block 3 and the second clamping block 6 , and the convex ring 13 is connected to both the first clamping block 3 and the second clamping block 6 . A third groove 14 is provided at one end of the brush head 1 , and the convex ring 13 is located at the third groove 14 .

[0043] First through holes 16 are disposed on both sides of the first clamping block 3 , and second grooves 15 are disposed at one end of the first through hole 16 and located on both sides of the first clamping block 3 .

[0044] The outer wall of the tail plug 2 is provided with a plurality of first protrusions 20 , and the first protrusions 20 are located on the base 18 .

[0045] The convex ring 13 is connected to a base 18 arranged on one side thereof, and the base 18 is also connected to the second clamping block 6. A second through hole 17 is provided on the base 18, and the third clamping block 8 is located at the third through hole. A connecting structure 19 is provided on the first clamping block 3, and the connecting structure 19 is connected to the base 18.

[0046] The limiting bone 5 is located on the inner wall of the first cavity to limit the depth direction of the motor shaft 10 .

[0047] A distance is set between the first clamping block 3 and the third clamping block 8 to provide a buffer space.

[0048] An electric toothbrush comprises an electric toothbrush replacement head.

[0049] The tail plug 2 is installed in the brush head 1, and a plurality of first protrusions 20 are designed on the edge of the tail cover. The first protrusions 20 of the tail plug 2 and the inner wall of the brush head 1 are interference-fitted to achieve a snap-fitting effect, thereby forming a finished toothbrush head 1.

[0050] When the motor 11 is inserted into the toothbrush head 1 , the limiting bone 5 inside the toothbrush head 1 limits the depth direction of the motor shaft 10 .

[0051] The first tail cover elastic protrusion 4 and the second tail cover elastic protrusion 7 press the motor shaft 10 to the left and right, so as to position and press the motor shaft 10 .

[0052] The elastic buckle 9 of the tail cover cooperates with the first groove 12 of the motor shaft 10 to prevent it from sliding upward to the motor shaft 10 .

[0053] Therefore, the present invention adopts the above-mentioned electric toothbrush replacement head and electric toothbrush, which are convenient for users to use, convenient for disassembly and assembly, cleaning and disinfection, and have a more suitable plugging and unplugging feel, improving the experience of difficult plugging and unplugging, which is more in line with the public's usage habits and provides a better experience.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. An electric toothbrush replacement head, characterized in that: It comprises a brush head, one end of which is provided with a first cavity, a tail plug is provided in the first cavity, and a second cavity is provided on the tail plug; A first clamping block is arranged on the inner wall of the second cavity, a first tail cover elastic convex point is arranged on the first clamping block, a limit bone is arranged on one side of the first clamping block, a second clamping block is arranged on one end of the limit bone, and a second tail cover elastic convex point is arranged on the second clamping block; A third clamping block is disposed at one end of the first clamping block, and a tail cover elastic buckle is disposed at one end of the third clamping block.

2. The electric toothbrush replacement head according to claim 1, characterized in that: A motor shaft is arranged in the tail plug, the tail plug is located at one end of the motor shaft, and a motor is arranged at the other end of the motor shaft; The motor shaft is provided with a first groove, and the first groove is connected to the elastic buckle of the tail cover.

3. The electric toothbrush replacement head according to claim 1, characterized in that: The first tail cover elastic protrusion and the second tail cover elastic protrusion are respectively located on two sides of the motor shaft.

4. The electric toothbrush replacement head according to claim 1, characterized in that: One end of the first clamping block and the second clamping block is provided with a convex ring, and the convex ring is connected to both the first clamping block and the second clamping block. One end of the brush head is provided with a third groove, and the convex ring is located at the third groove.

5. The electric toothbrush replacement head according to claim 1, characterized in that: First through holes are arranged on both sides of the first clamping block, and second grooves are arranged at one end of the first through hole and located on both sides of the first clamping block.

6. The electric toothbrush replacement head according to claim 4, characterized in that: The convex ring is connected to a base arranged on one side thereof, and the base is also connected to a second clamping block. A second through hole is arranged on the base, and the third clamping block is located at the second through hole. A connecting structure is arranged on the first clamping block, and the connecting structure is connected to the base.

7. The electric toothbrush replacement head according to claim 6, characterized in that: The outer wall of the tail plug is provided with a plurality of first protrusions, and the first protrusions are located on the base.

8. The electric toothbrush replacement head according to claim 1, characterized in that: The limiting bone is located on the inner wall of the first cavity.

9. The electric toothbrush replacement head according to claim 1, characterized in that: A distance is set between the first card block and the third card block.

10. An electric toothbrush, characterized in that: An electric toothbrush replacement head comprising any one of claims 1-9.

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