Connector, toothbrush head and driving shaft of electric toothbrush and electric toothbrush

Abstract

The invention provides a connector, a toothbrush head and a toothbrush driving shaft of an electric toothbrush and the electric toothbrush comprising the structure. According to the electric toothbrush, the toothbrush connector is arranged between the electric toothbrush driving shaft and the electric toothbrush head, so that compared with an electric toothbrush driving shaft with a relatively small size, a larger contact surface is formed between the toothbrush connector and the toothbrush head, and a more complex connecting structure can be arranged; through abutting and locking between the locking structure of the toothbrush head and the flange structure and the gap structure of the toothbrush connector, more complex connecting structures can be arranged, the imitation difficulty is greatly improved, and more supporting and damping structures can be formed on a large contact surface through abutting and locking between the flange structure and the gap structure. According to the electric toothbrush, vibration generated when the electric toothbrush works can be effectively relieved, noise generated by vibration is reduced, and the installation stability of the toothbrush head is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electric toothbrushes, and in particular to a connecting head, a toothbrush head, a toothbrush driving shaft and an electric toothbrush comprising the above structures. Background Art

[0002] The electric toothbrush generates high-frequency vibrations through the rapid rotation or vibration of the motor core, which instantly breaks down the toothpaste into fine foam and deeply cleans the gaps between teeth. At the same time, the vibration of the bristles can promote blood circulation in the oral cavity and massage the gum tissue. The electric toothbrush market has broad development prospects and is growing at an alarming rate, becoming one of the hottest products in the field of oral health.

[0003] However, there are currently a large number of "copycat" (unofficial imitations) toothbrush heads flooding the market. Most of the "copycat" toothbrush heads are of poor quality, which causes noise when the electric toothbrush is working and the brush head has poor stability, thus resulting in a poor user experience. Summary of the invention

[0004] In order to overcome the above-mentioned technical problems, the present invention provides an electric toothbrush connector, an electric toothbrush head, an electric toothbrush drive shaft and an electric toothbrush comprising the above-mentioned structure, which are used in conjunction with each other. The "exclusive" structure thereof can prevent the use of "copycat" toothbrush heads, reduce the noise generated when the electric toothbrush is working, and provide better stability of the pulling force of the toothbrush head.

[0005] The present invention provides an electric toothbrush connector. The electric toothbrush connector is a column, the interior of the column is a hollow structure, wherein the top of the column is close to the bristles of the electric toothbrush, and the bottom of the column opposite to the top is an opening; the hollow structure comprises: a first receiving portion, a second receiving portion and a third receiving portion that are connected to each other; the inner diameters of the first receiving portion, the second receiving portion and the third receiving portion increase in sequence from the top to the bottom;

[0006] The middle section of the outer wall of the column has a first flange, and the outer wall has a second flange near the bottom;

[0007] The outer side wall includes a first side wall and a second side wall arranged opposite to the first side wall;

[0008] A first gap is formed between the top and the first side wall, and the first gap is communicated with the first receiving portion; a second gap is formed between the first side wall and the second flange, and the second gap is communicated with the third receiving portion;

[0009] The first side wall has a first abutment portion at a position located at the third receiving portion;

[0010] The second side wall has a second abutting portion and a third abutting portion, wherein the second abutting portion is located within the second receiving portion, and the third abutting portion is located within the third receiving portion.

[0011] In some embodiments, the plane where the first flange is located is parallel to the plane where the second flange is located.

[0012] In some embodiments, a raised portion is formed between the first flange and the first side wall, and the raised portion and the first flange form a stepped structure.

[0013] In some embodiments, the shapes of the first flange and the second flange are both annular, wherein the outer diameter of the second flange is greater than the outer diameter of the first flange.

[0014] In some embodiments, on the first side wall, a first inclined surface is provided between the second receiving portion and the third receiving portion, and a second inclined surface is formed between the third receiving portion and the second gap;

[0015] The first abutting portion includes the first inclined surface, the second inclined surface, and a section of the first side wall between the first inclined surface and the second inclined surface.

[0016] In some embodiments, on the second side wall, a third inclined surface is provided between the first receiving portion and the second receiving portion, a fourth inclined surface is provided between the second receiving portion and the third receiving portion, and a fifth inclined surface is provided between the third receiving portion and the opening;

[0017] The second abutting portion includes the third inclined surface and a section of the second side wall between the third inclined surface and the fourth inclined surface;

[0018] The third abutting portion includes the fourth inclined surface and a section of the second side wall between the fourth inclined surface and the fifth inclined surface.

[0019] The present invention also provides an electric toothbrush head. The electric toothbrush head includes: a brush rod and a brush head connected to the top end of the brush rod. The shape of the brush rod is a horn shape with the size gradually increasing from the top end to the bottom of the brush rod. The inside of the brush rod is hollow, and the shape of the cross-section of the bottom in the vertical direction is a trapezoid. It is characterized in that the bottom is matched with any one of the above-mentioned electric toothbrush connectors. Among them, a first locking portion in an "L" shape is formed at a position on the inner side wall of the bottom close to the top surface of the bottom. A second locking portion, a third locking portion, and a fourth locking portion are sequentially formed below the first locking portion; the short side of the first locking portion is matched with the first gap, and the second locking portion is matched with the stepped structure; the third locking portion is a protrusion on the inner side wall that abuts against the end of the first flange; the fourth locking portion is a protrusion on the inner side wall that abuts against the upper surface of the second flange.

[0020] In some embodiments, the inner side wall of the opening at the bottom of the brush rod abuts against the outer side wall of the opening at the bottom of the electric toothbrush connector.

[0021] The present invention also provides an electric toothbrush drive shaft. The electric toothbrush drive shaft includes a first shaft portion located inside the holding portion of the electric toothbrush and a second shaft portion located outside the holding portion of the electric toothbrush; one end of the first shaft portion is connected to the electric motor of the electric toothbrush, and the other end is connected to the second shaft portion. The second shaft portion includes a shaft end portion that abuts against the inner side wall of the top of the electric toothbrush connector. The electric toothbrush connector is any one of the above-mentioned electric toothbrush connectors. Among them, the second shaft portion further includes: a first connecting portion, a second connecting portion, a third connecting portion, and the bottom of the second shaft portion sequentially arranged downward from the shaft end portion;

[0022] Among them, the first connecting portion is matched with the first receiving portion; the second connecting portion is matched with the second receiving portion. The second connecting portion includes a first protrusion, and the first protrusion abuts against the second abutting portion; the third connecting portion is matched with the third receiving portion. The third connecting portion includes a second protrusion and a third protrusion. The second protrusion abuts against the third abutting portion, and the third protrusion abuts against the first abutting portion; the side wall of the bottom of the first shaft portion is matched with the bottom opening of the electric toothbrush connector.

[0023] The present invention also provides an electric toothbrush. The electric toothbrush includes: a holding portion, an electric motor arranged in the holding portion, a power supply circuit and a control circuit electrically connected to the electric motor. Among them, the electric toothbrush further includes any one of the above-mentioned electric toothbrush heads, any one of the electric toothbrush drive shafts, and any one of the electric toothbrush connectors.

[0024] The beneficial effects of the present invention are as follows: By providing a toothbrush connector with a specific structure between the drive shaft of the electric toothbrush and the toothbrush head, compared with the relatively small drive shaft of the electric toothbrush, there is a larger contact surface between the toothbrush connector and the toothbrush head, and a more complex connection structure can be set, thereby greatly increasing the difficulty of imitation. Moreover, by setting more support and damping structures on the larger contact surface, the vibration generated during the operation of the electric toothbrush can be effectively alleviated, the noise generated by the vibration can be reduced, and the installation stability of the toothbrush head can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] Figure 1 It is a combined - exploded view of an electric toothbrush connector and a toothbrush head provided by the present application;

[0027] Figure 2 It is a cross - sectional view of an electric toothbrush provided by the present application;

[0028] Figure 3 It is a front view of the second shaft portion of the drive shaft of an electric toothbrush provided by the present application;

[0029] Figure 4 It is a partial cross - sectional view of an electric toothbrush showing the connection relationship between the electric toothbrush connector, the toothbrush head, and the drive shaft of the electric toothbrush provided by the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0031] The present invention provides an electric toothbrush connector. As Figure 1As shown, the electric toothbrush connector 1 is a cylinder, and the interior of the cylinder is a hollow structure. Among them, the top 11 of the cylinder is close to the brush of the electric toothbrush 2, and the bottom 12 of the cylinder opposite to the top is an opening; the hollow structure includes: a first storage portion 13, a second storage portion 14, and a third storage portion 15 that communicate with each other; the inner diameters of the first storage portion, the second storage portion, and the third storage portion from the top downwards increase in sequence;

[0032] The middle section of the outer side wall of the cylinder has a first flange 16, and the position of the outer side wall close to the bottom 12 has a second flange 17;

[0033] The outer side wall includes a first side wall 18 and a second side wall 19 arranged opposite to the first side wall 18;

[0034] A first gap 181 is formed between the top 11 and the first side wall 18, and the first gap 181 communicates with the first storage portion 13; a second gap 182 is formed between the first side wall 18 and the second flange 17, and the second gap 182 communicates with the third storage portion 15;

[0035] The first side wall 18 has a first abutting portion at the position of the third storage portion 15;

[0036] The second side wall 19 has a second abutting portion and a third abutting portion, wherein the second abutting portion is located in the second storage portion 14, and the third abutting portion is located in the third storage portion 15.

[0037] Preferably, the plane where the first flange 16 is located is parallel to the plane where the second flange 17 is located.

[0038] Preferably, a protruding portion 161 is formed between the first flange 16 and the first side wall 18, and the protruding portion 161 and the first flange 16 form a stepped structure.

[0039] Preferably, the shapes of the first flange 16 and the second flange 17 are both annular, and among them, the outer diameter of the second flange 16 is greater than the outer diameter of the first flange 17.

[0040] Preferably, on the first side wall 18, a first inclined surface 151 is provided between the second storage portion 14 and the third storage portion 15, and a second inclined surface 152 is formed between the third storage portion 15 and the second gap 182;

[0041] The first abutting portion includes the first inclined surface 151, the second inclined surface 152, and a section of the first side wall between the first inclined surface 151 and the second inclined surface 152.

[0042] Preferably, on the second side wall 19, a third inclined surface 141 is provided between the first accommodating portion 13 and the second accommodating portion 14, a fourth inclined surface 142 is provided between the second accommodating portion 14 and the third accommodating portion 15, and a fifth inclined surface 143 is provided between the third accommodating portion 15 and the opening;

[0043] The second abutting portion includes the third inclined surface 141 and a section of the second side wall between the third inclined surface 141 and the fourth inclined surface 142;

[0044] The third abutting portion includes the fourth inclined surface 142 and a section of the second side wall between the fourth inclined surface 142 and the fifth inclined surface 143.

[0045] The present invention also provides an electric toothbrush head 2. As Figure 1 shown, the electric toothbrush head 2 includes a brush rod 21 and a brush head 22 connected to the top end of the brush rod 21. The shape of the brush rod 21 is a horn shape with the size gradually increasing from the top end to the bottom 23 of the brush rod. The inside of the brush rod is hollow, and the shape of the cross-section of the bottom 23 in the vertical direction is a trapezoid. The bottom 23 is matched with any one of the electric toothbrush connectors 1 provided by the present invention. Among them, an "L"-shaped first locking portion 211 is formed at a position on the inner side wall of the bottom 23 close to the top surface of the bottom. A second locking portion 212, a third locking portion 213, and a fourth locking portion 214 are sequentially formed below the first locking portion 211; the short side of the first locking portion 211 is matched with the first gap 181; the second locking portion 212 is matched with the stepped structure; the third locking portion 213 is a protrusion on the inner side wall that abuts against the end of the first flange 16; the fourth locking portion 214 is a protrusion on the inner side wall that abuts against the upper surface of the second flange 17.

[0046] In some embodiments, the inner side wall of the opening of the bottom 23 of the brush rod abuts against the outer side wall of the opening of the bottom of the electric toothbrush connector 1.

[0047] The present invention also provides an electric toothbrush drive shaft. As Figure 2 、 3As shown, the drive shaft 3 of the electric toothbrush includes a first shaft portion 31 located within the grip portion 41 of the electric toothbrush and a second shaft portion 32 located outside the grip portion of the electric toothbrush; one end of the first shaft portion 31 is connected to the electric motor 42 of the electric toothbrush 4, and the other end is connected to the second shaft portion 32. The second shaft portion 32 includes a shaft end portion 321 that abuts against the inner side wall of the top of the electric toothbrush connector 1. The electric toothbrush connector 1 is any of the electric toothbrush connectors described in the embodiments of the present invention. Wherein, the second shaft portion 32 further includes: a first connecting portion 322, a second connecting portion 323, a third connecting portion 324, and the bottom 325 of the second shaft portion, which are sequentially arranged downward from the shaft end portion 321;

[0048] Wherein, the first connecting portion 322 is matched with the first receiving portion 13; the second connecting portion 323 is matched with the second receiving portion 14. As Figure 4 shown, the second connecting portion 323 includes a first protrusion 3231, and the first protrusion 3231 abuts against the second abutting portion; the third connecting portion 324 is matched with the third receiving portion 15. The third connecting portion 324 includes a second protrusion 3241 and a third protrusion 3242. The second protrusion 3241 abuts against the third abutting portion, and the third protrusion 3242 abuts against the first abutting portion; the side wall of the bottom 325 of the second shaft portion 32 is matched with the bottom opening of the electric toothbrush connector 1.

[0049] The present invention also provides an electric toothbrush 4. As Figure 2 shown, the electric toothbrush includes: a grip portion 41, an electric motor 42 disposed within the grip portion 41, a power supply circuit and a control circuit (not shown) electrically connected to the electric motor. Wherein, the electric toothbrush 4 further includes any of the above-mentioned electric toothbrush heads 2, any of the above-mentioned electric toothbrush connectors 1, and any of the above-mentioned electric toothbrush drive shafts 3. The specific structure can be referred to above and will not be elaborated here.

[0050] By providing a toothbrush connector between the drive shaft of the electric toothbrush and the toothbrush head, compared with the relatively small-sized drive shaft of the electric toothbrush, there is a larger contact surface between the toothbrush connector and the toothbrush head, and a more complex connection structure can be provided. Specifically, through the abutment and locking between the locking structure of the toothbrush head and the flange structure and clearance structure of the toothbrush connector, not only can a more complex connection structure be provided, greatly increasing the difficulty of imitation, but also more support and vibration damping structures can be formed through the abutment and locking between these flange structures and clearance structures on a larger contact surface, which can effectively relieve the vibration generated during the operation of the electric toothbrush, reduce the noise generated by the vibration, and improve the installation stability of the toothbrush head.

[0051] Obviously, those skilled in the art can make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, this application is also intended to include these modifications and variations.

Claims

1. An electric toothbrush connector, the electric toothbrush connector being a cylinder, the interior of the cylinder being a hollow structure, characterized in that, The top of the cylinder is close to the brush of the electric toothbrush, and the bottom of the cylinder opposite to the top is an opening; The hollow structure includes: a first storage part, a second storage part, and a third storage part that communicate with each other; the inner diameters of the first storage part, the second storage part, and the third storage part from the top downwards increase in sequence; The middle section of the outer side wall of the cylinder has a first flange, and the position of the outer side wall close to the bottom has a second flange; The outer side wall includes a first side wall and a second side wall arranged opposite to the first side wall; A first gap is formed between the top and the first side wall, and the first gap communicates with the first storage part; a second gap is formed between the first side wall and the second flange, and the second gap communicates with the third storage part; The first side wall has a first abutting part at the position of the third storage part; The second side wall has a second abutting part and a third abutting part, wherein the second abutting part is located in the second storage part, and the third abutting part is located in the third storage part.

2. The electric toothbrush connector according to claim 1, characterized in that The plane where the first flange is located is parallel to the plane where the second flange is located.

3. The electric toothbrush connector according to claim 2, wherein, A raised part is formed between the first flange and the first side wall, and the raised part and the first flange form a stepped structure.

4. The electric toothbrush connector according to claim 3, wherein, The shapes of the first flange and the second flange are both annular, wherein the outer diameter of the second flange is larger than the outer diameter of the first flange.

5. The electric toothbrush connector according to any one of claims 1-4, characterized in that, On the first side wall, a first inclined surface is provided between the second storage part and the third storage part, and a second inclined surface is formed between the third storage part and the second gap; The first abutting part includes the first inclined surface, the second inclined surface, and a section of the first side wall between the first inclined surface and the second inclined surface.

6. The electric toothbrush connector according to claim 5, wherein On the second side wall, a third inclined surface is provided between the first storage part and the second storage part, a fourth inclined surface is provided between the second storage part and the third storage part, and a fifth inclined surface is provided between the third storage part and the opening; The second abutting part includes the third inclined surface and a section of the second side wall between the third inclined surface and the fourth inclined surface; The third abutting part includes the fourth inclined surface and a section of the second side wall between the fourth inclined surface and the fifth inclined surface.

7. An electric toothbrush head, comprising: A brush rod and a brush head connected to the top end of the brush rod. The shape of the brush rod is a flared shape with the size gradually increasing from the top end to the bottom of the brush rod. The inside of the brush rod is hollow, and the shape of the cross-section of the bottom in the vertical direction is a trapezoid. It is characterized in that the bottom is matched with the electric toothbrush connector described in any one of claims 1-6. Among them, a "L"-shaped first locking portion is formed at a position on the inner side wall of the bottom close to the top surface of the bottom. A second locking portion, a third locking portion, and a fourth locking portion are sequentially formed below the first locking portion; the short side of the first locking portion is matched with the first gap, and the second locking portion is matched with the stepped structure; the third locking portion is a protrusion on the inner side wall that abuts against the end of the first flange; the fourth locking portion is a protrusion on the inner side wall that abuts against the upper surface of the second flange.

8. The electric toothbrush head according to claim 7, wherein The inner side wall of the opening at the bottom of the brush rod abuts against the outer side wall of the opening at the bottom of the electric toothbrush connector.

9. An electric toothbrush drive shaft, comprising a first shaft portion located within the grip portion of the electric toothbrush and a second shaft portion located outside the grip portion of the electric toothbrush; one end of the first shaft portion is connected to the electric motor of the electric toothbrush, and the other end is connected to the second shaft portion. The second shaft portion includes a shaft end portion that abuts against the inner side wall of the top of the electric toothbrush connector. The electric toothbrush connector is the electric toothbrush connector according to any one of claims 1-6, characterized in that, The second shaft portion further includes: a first connecting portion, a second connecting portion, a third connecting portion, and the bottom of the second shaft portion sequentially arranged downward from the shaft end. Among them, the first connecting portion is matched with the first receiving portion; the second connecting portion is matched with the second receiving portion. The second connecting portion includes a first protrusion, and the first protrusion abuts against the second abutting portion; the third connecting portion is matched with the third receiving portion. The third connecting portion includes a second protrusion and a third protrusion. The second protrusion abuts against the third abutting portion, and the third protrusion abuts against the first abutting portion; the side wall of the bottom of the second shaft portion is matched with the bottom opening of the electric toothbrush connector.

10. An electric toothbrush, comprising: A holding portion, an electric motor arranged in the holding portion, a power supply circuit and a control circuit electrically connected to the electric motor. It is characterized in that the electric toothbrush further includes the electric toothbrush head described in claim 7, the electric toothbrush drive shaft described in claim 9, and the electric toothbrush connector described in claim 1.

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