Brush head for electric toothbrush and electric toothbrush

Abstract

The utility model relates to a brush head for an electric toothbrush and the electric toothbrush, the brush head comprises a brush head body and a transmission assembly, and the electric toothbrush comprises a holding part and the brush head. The brush head body is provided with two ends which are opposite in the axis extending direction of the brush head body and are marked as a first end and a second end respectively, a first brush head and a second brush head are arranged at the first end of the brush head body, the first brush head is rotationally connected to the brush head body, and the second brush head is constructed to be in sliding fit with the brush head body along a straight line; the transmission assembly is configured to be rotationally connected to the brush head body and is configured to drive the first brush head to rotate in a reciprocating mode and drive the second brush head to linearly move in a reciprocating mode in the reciprocating rotation process relative to the brush head body. According to the brush head for the electric toothbrush and the electric toothbrush provided by the invention, the cleaning effect can be remarkably improved by combining rotary motion and linear reciprocating motion, the comprehensiveness and depth of cleaning are improved, and gingival health can be better protected.

Description

Technical Field

[0001] The present disclosure relates to the technical field of cleaning equipment, and more specifically, to a brush head for an electric toothbrush and an electric toothbrush. Background Art

[0002] An electric toothbrush is a modern oral cleaning tool that uses a battery or charging device to drive the brush head to vibrate, rotate or other movements to assist the user in cleaning the teeth and mouth more effectively.

[0003] While existing electric toothbrushes, such as high-frequency sonic vibration and reciprocating rotation, have improved tooth cleaning efficiency to a certain extent, these single motion modes still have limitations. The surface structure of teeth is complex, with not only smooth tooth surfaces but also hard-to-reach gaps and gingival sulci. Relying on only one motion mode often makes it difficult to fully cover and penetrate these small areas, resulting in unsatisfactory cleaning results, especially for the deep gaps between teeth and the junction between teeth and gums. Utility Model Content

[0004] In view of this, the embodiments of the present disclosure provide a brush head for an electric toothbrush and an electric toothbrush to solve the technical defects existing in the prior art.

[0005] To achieve the above objectives, the present disclosure adopts the following technical solutions:

[0006] According to a first aspect of the present disclosure, the present disclosure provides a brush head for an electric toothbrush, comprising:

[0007] A brush head body, the brush head body having two opposite ends along the direction in which the axis extends, respectively denoted as a first end and a second end, a first brush head and a second brush head being provided at the first end of the brush head body, the first brush head being rotatably connected to the brush head body, and the second brush head being configured to slide along a straight line on the brush head body;

[0008] The transmission assembly is configured to be rotatably connected to the brush head body, and is configured to drive the first brush head to rotate reciprocatingly and the second brush head to move reciprocatingly in a linear manner during the reciprocating rotation relative to the brush head body.

[0009] In one embodiment of the present disclosure, the second brush head is configured to reciprocate linearly along the axis of the brush head body; and the rotation axis of the first brush head is configured to be perpendicular to the axis of the brush head body.

[0010] In one embodiment of the present disclosure, the transmission assembly has a transmission rod extending along the axis and a pushing member provided on the transmission rod.

[0011] In one embodiment of the present disclosure, the first brush head is constructed to be connected to the brush head body via a rotating shaft; a mating hole is provided at a position of the first brush head deviating from its center, and the end of the transmission assembly is provided with a bending portion extending perpendicular to the axis of the brush head body, and the bending portion is constructed to cooperate with the mating hole, so that the transmission assembly drives the first brush head to swing back and forth around the rotating shaft within a predetermined angle.

[0012] In one embodiment of the present disclosure, the fitting hole is elliptical, and the extension direction of the long axis thereof is the same as the extension direction of the axis of the brush head body.

[0013] In one embodiment of the present disclosure, the major axis dimension of the fitting hole is larger than the dimension of the bending portion in the corresponding direction.

[0014] In one embodiment of the present disclosure, the pushing member includes a first pushing portion and a second pushing portion which are radially extended along the axis and are respectively arranged on both sides of the transmission rod, the first pushing portion is provided with a first pushing surface, and the second pushing portion is provided with a second pushing surface; the first pushing portion is constructed so that when the transmission rod rotates along the first direction, at least part of the rotation action pushes the second brush head to generate a displacement movement along a third direction; the second pushing portion is constructed so that when the transmission rod rotates along the second direction, at least part of the rotation action pushes the second brush head to generate a displacement movement along a fourth direction, and the third direction is opposite to the fourth direction.

[0015] In one embodiment of the present disclosure, the first pushing surface is a twisted surface; and / or,

[0016] The second pushing surface is a twisted surface; and / or,

[0017] The first pushing portion and the second pushing portion are spaced apart along the extending direction of the axis; and / or,

[0018] The first pushing surface is configured to gradually move away from the second brush head along a third direction; and / or,

[0019] The second pushing surface is configured to gradually move away from the second brush head along a fourth direction; and / or,

[0020] The first pushing surface is configured to gradually narrow in a direction away from the transmission rod; and / or,

[0021] The second pushing surface is configured to gradually narrow in a direction away from the transmission rod.

[0022] In one embodiment of the present disclosure, a first mating portion and a second mating portion are provided on the second brush head; the first pushing portion is configured to abut against the first mating portion when the transmission assembly rotates in the first direction, so as to push the second brush head to generate displacement movement along the third direction; the second pushing portion is configured to abut against the second mating portion when the transmission assembly rotates in the second direction, so as to push the second brush head to generate displacement movement along the fourth direction.

[0023] In one embodiment of the present disclosure, the surface on the first mating portion for mating with the first pushing surface is constructed as an inclined surface or an arc surface; the surface on the second mating portion for mating with the second pushing surface is constructed as an inclined surface or an arc surface.

[0024] In one embodiment of the present disclosure, a blocking portion is provided on the transmission assembly, and the blocking portion and the first pushing portion are constructed to be located on the same side of the transmission assembly; when the second brush head moves in a direction away from the first brush head to a predetermined position, it abuts against the blocking portion; when the second brush head moves in a direction close to the first brush head to a predetermined position, it abuts against the first brush head.

[0025] In one embodiment of the present disclosure, the second brush head is adjacent to a side of the first brush head and is constructed to have an arc groove structure that matches the outer surface of the first brush head.

[0026] In one embodiment of the present disclosure, the brush head also includes a fixing part arranged in the inner cavity of the brush head body, and the fixing part cooperates with a gripping part with a built-in power source, so that when the power source drives the transmission assembly, the brush head body and the gripping part do not rotate relative to each other.

[0027] According to a second aspect of the present disclosure, the present disclosure provides an electric toothbrush, comprising:

[0028] Grip;

[0029] Brush head as described above.

[0030] The present disclosure provides a brush head and electric toothbrush for use with an electric toothbrush. The reciprocating motion of the first brush head effectively cleans tooth surfaces and smooth areas, while the linear reciprocating motion of the second brush head penetrates deeper into hard-to-reach areas such as tooth gaps and gum sulci, removing hidden residue and plaque. This not only improves the comprehensiveness and depth of cleaning, but also better protects gum health, reduces gum irritation and damage caused by improper cleaning, significantly enhances cleaning effectiveness, provides a more efficient and detailed oral cleaning experience, and contributes to maintaining good oral hygiene.

[0031] Other features and advantages of the present disclosure will become apparent from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 1 is a schematic structural diagram of a brush head for an electric toothbrush provided in one embodiment of the present disclosure;

[0033] Figure 2 is a schematic diagram of the motion state of a brush head for an electric toothbrush provided by another embodiment of the present disclosure;

[0034] Figure 3 is a schematic diagram of the motion state of a brush head for an electric toothbrush provided by another embodiment of the present disclosure;

[0035] Figure 4 is a schematic diagram of the motion state of a brush head for an electric toothbrush provided by another embodiment of the present disclosure;

[0036] Figure 5 is a bottom view of a brush head for an electric toothbrush provided in another embodiment of the present disclosure;

[0037] Figure 6 is a front view of a brush head for an electric toothbrush provided in another embodiment of the present disclosure;

[0038] Figure 7 is a top view of a brush head for an electric toothbrush provided in another embodiment of the present disclosure;

[0039] Figure 8 is a right side view of a brush head for an electric toothbrush provided in another embodiment of the present disclosure;

[0040] Figure 9 is a left side view of a brush head for an electric toothbrush provided in another embodiment of the present disclosure;

[0041] Figure 10 is a schematic structural diagram of an electric toothbrush provided in one embodiment of the present disclosure;

[0042] Figure 11 is a structural schematic diagram of a brush head for an electric toothbrush provided by another embodiment of the present disclosure;

[0043] Figure 12 is a structural schematic diagram of a brush head for an electric toothbrush provided by another embodiment of the present disclosure;

[0044] Figure 13 It is a structural schematic diagram of a brush head for an electric toothbrush provided in another embodiment of the present disclosure.

[0045] 1-brush head body; 2-first brush head; 3-second brush head; 4-transmission assembly; 41-transmission rod; 42-pushing member; 421-first pushing part; 422-second pushing part; 4211-first pushing surface; 4221-second pushing surface; 5-rotating shaft; 6-matching hole; 7-bending part; 8-first matching part; 9-second matching part; 10-blocking part; 11-fixing part; 12-gripping part. DETAILED DESCRIPTION

[0046] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present disclosure.

[0047] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present disclosure, its application, or uses.

[0048] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0049] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0050] The specific embodiments of the present disclosure are described below with reference to the accompanying drawings.

[0051] In this document, “upper”, “lower”, “front”, “back”, “left”, “right”, etc. are only used to indicate the relative position relationship between related parts, rather than to limit the absolute positions of these related parts.

[0052] In this article, "first", "second", etc. are only used to distinguish each other, and do not indicate the importance and order, or the prerequisite for each other's existence.

[0053] In this document, “equal”, “same”, etc. are not strictly limited in a mathematical and / or geometric sense, but also include errors that can be understood by those skilled in the art and are allowed in manufacturing or use.

[0054] The present disclosure provides a brush head for an electric toothbrush and an electric toothbrush, wherein the brush head includes a brush head body and a transmission assembly, and the electric toothbrush includes a grip portion and a brush head as described above. The brush head body has two opposite ends along the direction in which its axis extends, respectively denoted as a first end and a second end. A first brush head and a second brush head are provided at the first end of the brush head body, the first brush head being rotatably connected to the brush head body, and the second brush head being configured to slide linearly on the brush head body; the transmission assembly is configured to be rotatably connected to the brush head body, and is configured to drive the first brush head to reciprocate and the second brush head to reciprocate linearly during reciprocating rotation relative to the brush head body.

[0055] The present disclosure provides a brush head and electric toothbrush for use with an electric toothbrush. The reciprocating motion of the first brush head effectively cleans tooth surfaces and smooth areas, while the linear reciprocating motion of the second brush head penetrates deeper into hard-to-reach areas such as tooth gaps and gum sulci, removing hidden residue and plaque. This not only improves the comprehensiveness and depth of cleaning, but also better protects gum health, reduces gum irritation and damage caused by improper cleaning, significantly enhances cleaning effectiveness, provides a more efficient and detailed oral cleaning experience, and contributes to maintaining good oral hygiene.

[0056] For ease of understanding, refer to Figures 1 to 13 , the specific structure and working principle of the brush head for an electric toothbrush and the electric toothbrush disclosed in the present invention are explained in detail with reference to an embodiment.

[0057] like Figure 1 As shown, according to a first aspect of the present disclosure, the present disclosure provides a brush head for an electric toothbrush, comprising:

[0058] The brush head body 1 has two opposite ends along the extension direction of its axis, which are respectively marked as the first end and the second end. A first brush head 2 and a second brush head 3 are provided at the first end of the brush head body 1. The first brush head 2 is rotatably connected to the brush head body 1, and the second brush head 3 is constructed to slide along a straight line on the brush head body 1.

[0059] Specifically, see Figures 5 to 9The brush head disclosed herein includes a brush head body 1, which has two opposite ends along the direction of extension of its axis, and these two ends are respectively referred to as the first end and the second end. A first brush head 2 and a second brush head 3 are provided at the first end of the brush head body 1, wherein the first brush head 2 is connected to the brush head body 1 by rotation. During use, the first brush head 2 can rotate to effectively remove dental plaque and food debris from the tooth surface and smooth areas. The second brush head 3 is specially constructed to be able to slide on the brush head body 1 along a straight path. During use, the second brush head 3 can perform reciprocating linear motion, so as to better enter hard-to-reach areas such as tooth gaps and gingival sulci, and remove residues and plaque hidden in these areas. By combining these two different movement modes, the brush head can provide a more comprehensive and efficient cleaning effect, ensuring that the tooth surface and gaps can be thoroughly cleaned, while also better protecting the health of the gums and reducing discomfort during the cleaning process.

[0060] Transmission assembly 4, such as Figure 1 As shown, the transmission assembly 4 is configured to be rotatably connected to the brush head body 1, and is configured to drive the first brush head 2 to rotate back and forth and drive the second brush head 3 to reciprocate linearly during the reciprocating rotation relative to the brush head body 1.

[0061] Specifically, the transmission assembly 4 is connected to the brush head body 1 and is capable of converting power into different motion forms for the first brush head 2 and the second brush head 3. When the transmission assembly 4 reciprocates relative to the brush head body 1, it drives the first brush head 2 to reciprocate, effectively removing plaque and food debris from tooth surfaces and smooth areas.

[0062] At the same time, the transmission component 4 will also drive the second brush head 3 to perform reciprocating linear motion, which can better enter hard-to-reach areas such as tooth gaps and gingival sulci, remove residues and plaque hidden in these areas, and can penetrate deep into tooth gaps to remove dirt and maintain the health of teeth and gums.

[0063] By combining the transmission assembly 4 with the first and second brush heads 2 and 3, the brush heads can provide a more comprehensive and efficient cleaning effect, ensuring that both the tooth surface and the crevices are thoroughly cleaned while also better protecting gum health and reducing discomfort during cleaning. Furthermore, it can help users more easily complete their daily oral care routine, improving cleaning effectiveness while also increasing comfort and convenience.

[0064] like Figure 1 As shown, in one embodiment of the present disclosure, the second brush head 3 is configured to reciprocate linearly along the axis of the brush head body 1 ; the rotation axis of the first brush head 2 is configured to be perpendicular to the axis of the brush head body 1 .

[0065] Specifically, the first brush head 2 effectively removes plaque and food debris from tooth surfaces and smooth areas by rotating perpendicularly to the axis of the brush head body 1, while the second brush head 3, through linear reciprocating motion along the axis of the brush head body 1, can better reach hard-to-reach areas such as tooth gaps and gingival sulci, removing residue and plaque hidden in these areas. The combination of these two motion modes provides a more comprehensive and efficient cleaning effect.

[0066] In addition, the independent movement modes of the first brush head 2 and the second brush head 3 can be performed simultaneously, which means that during a single use, the user can achieve a more efficient cleaning effect, reducing cleaning time and improving cleaning efficiency. Through rotation perpendicular to the axis of the brush head body 1 and linear reciprocating motion along the axis of the brush head body 1, it can better cover the tooth surface and gaps, reduce blind spots, and ensure that the teeth and gums are thoroughly cleaned.

[0067] like Figures 1 to 4 As shown, in one embodiment of the present disclosure, the transmission assembly 4 has a transmission rod extending along an axis and a pushing member 42 provided on the transmission rod 41 .

[0068] Specifically, the transmission assembly 4 includes a transmission rod 41 extending along the axis. The transmission rod 41 is responsible for transmitting power to the brush head body 1, ensuring that the first brush head 2 and the second brush head 3 can move in a predetermined manner. In actual operation, the transmission rod 41 reciprocates under the action of the power source, thereby driving the first brush head 2 to reciprocate. The transmission rod 41 is also provided with a pusher 42. During the rotation of the transmission rod 41, the pusher 42 uses its structure to push the second brush head 3 to reciprocate linearly along the axis of the brush head body 1, realizing the coordinated operation of the two brush heads.

[0069] In one embodiment of the present disclosure, Figures 1 to 4 As shown, the first brush head 2 is constructed to be connected to the brush head body 1 through a rotating shaft 5; a matching hole 6 is provided at a position of the first brush head 2 deviating from its center, and a bending portion 7 extending perpendicular to the axis of the brush head body 1 is provided at the end of the transmission assembly 4. The bending portion 7 is constructed to cooperate with the matching hole 6 so that the transmission assembly 4 drives the first brush head 2 to swing back and forth around the rotating shaft 5 within a predetermined angle.

[0070] Specifically, the first brush head 2 is connected to the brush head body 1 via a rotating shaft 5 and rotates around the rotating shaft 5. A mating hole 6 is provided at a position offset from the center of the first brush head 2. The end of the transmission assembly 4 is provided with a bent portion 7 extending perpendicular to the axis of the brush head body 1. The bent portion 7 is configured to mate with the mating hole 6 on the first brush head 2. In order to achieve the reciprocating rotation of the first brush head 2, the mating hole 6 is designed to be offset from the center of the circle. In this way, during the reciprocating rotation, when the transmission rod 41 rotates, the bent portion 7 at the end of the transmission rod 41 changes position within the mating hole 6 as the transmission rod 41 rotates. The bent portion 7 can provide a guiding effect within the mating hole 6, allowing the first brush head 2 to swing back and forth around the rotating shaft 5 within a predetermined angular range, thereby achieving an efficient and uniform cleaning effect. In addition, in this embodiment, the mating hole 6 is configured as a blind hole, which helps to improve the overall performance and reliability of the transmission assembly 4. Designating the mating hole 6 as a blind hole limits the range of movement of the bent portion 7, enhancing the stability of the system and preventing the bent portion 7 from accidentally falling out of the mating hole 6 during movement, thereby ensuring the continuity and reliability of the operation of the transmission assembly 4. Furthermore, the simple structure of the blind hole reduces the complexity of the manufacturing process and lowers production costs. The closed end also reduces the possibility of external impurities entering the mating hole 6, extending the service life of the transmission assembly 4 and enabling better control of the reciprocating rotation amplitude of the first brush head 2, thereby optimizing the cleaning effect.

[0071] like Figures 2 to 4 As shown, in one embodiment of the present disclosure, the fitting hole 6 is elliptical, and the extension direction of its long axis is the same as the extension direction of the axis of the brush head body 1.

[0072] Specifically, when the transmission rod 41 rotates, the bent portion 7 moves in the elliptical mating hole 6. Since the long axis direction of the mating hole 6 is consistent with the axis of the brush head body 1, the bent portion 7 can move stably along the predetermined direction under the drive of the transmission rod 41, thereby ensuring that the first brush head 2 can reciprocate within a predetermined angle range. This not only ensures the stability of the rotation of the first brush head 2, but also increases the rotation amplitude, thereby improving the cleaning efficiency and uniformity, and reducing wear between components. The mating hole 6 is set to be elliptical, and the direction in which its long axis extends is the same as the direction in which the axis of the brush head body 1 extends, which can ensure that the bent portion 7 stably guides the first brush head 2 to reciprocate when the transmission rod 41 rotates, while reducing the friction and wear between the bent portion 7 and the mating hole 6, thereby extending the service life of the transmission assembly 4.

[0073] like Figures 2 to 4 As shown, in one embodiment of the present disclosure, the major axis dimension of the fitting hole 6 is larger than the dimension of the bending portion 7 in the corresponding direction.

[0074] To ensure that the bent portion 7 has sufficient room for movement, the major axis of the mating hole 6 needs to be set larger than the dimension of the bent portion 7 in the corresponding direction. This ensures that the bent portion 7 can stably guide the first brush head 2 to reciprocate when the transmission rod 41 rotates, and helps reduce friction and wear between the bent portion 7 and the mating hole 6, extending the service life of the transmission assembly 4, reducing the frequency of maintenance and replacement, and improving the durability of the entire system.

[0075] like Figures 11 to 13 As shown, in one embodiment of the present disclosure, the pushing member 42 includes a first pushing portion 421 and a second pushing portion 422 extending radially along the axis and respectively arranged on both sides of the transmission rod 41, the first pushing portion 421 is provided with a first pushing surface 4211, and the second pushing portion 422 is provided with a second pushing surface 4221; the first pushing portion 421 is constructed to rotate along the first direction with the transmission rod 41, and at least part of the rotation action pushes the second brush head 3 to generate a displacement movement along the third direction; the second pushing portion 422 is constructed to rotate along the second direction with the transmission rod 41, and at least part of the rotation action pushes the second brush head 3 to generate a displacement movement along the fourth direction, and the third direction is opposite to the fourth direction.

[0076] Specifically, the driving member 42 of the transmission assembly 4 includes a first driving portion 421 and a second driving portion 422, extending radially along the axis, respectively, and arranged on either side of the transmission rod 41. The first driving portion 421 is provided with a first driving surface 4211, while the second driving portion 422 is provided with a second driving surface 4221. The arrangement of these two driving surfaces enables the transmission rod 41 to reciprocate relative to the brush head body 1, thereby driving the second brush head 3 to reciprocate linearly along the axis of the brush head body 1 via the first driving portion 421 and the second driving portion 422.

[0077] like Figures 2 to 4 、 Figures 11 to 13 As shown, when the transmission rod 41 rotates in a first direction (e.g., rightward), the first push portion 421 rotates along with the transmission rod 41 in the first direction (e.g., rightward). At this point, the first push surface 4211 on the first push portion 421 pushes the second brush head 3 to generate displacement in a third direction (e.g., upward). When the transmission rod 41 rotates in a second direction (e.g., leftward), the second push portion 422 rotates along with the transmission rod 41 in the second direction (e.g., leftward). At this point, the second push surface 4221 on the second push portion 422 pushes the second brush head 3 to generate displacement in a fourth direction (e.g., downward). The third and fourth directions are opposite, meaning that when the transmission rod 41 changes its rotational direction, the second brush head 3 also changes its movement direction, thereby achieving reciprocating linear motion. This allows the second brush head 3 to move up and down, accessing hard-to-reach areas such as between teeth and in the gingival sulcus, and remove residue and plaque hidden there.

[0078] In another embodiment of the present disclosure, when the transmission rod 41 rotates to the right, the first brush head 2 rotates clockwise; during this process, the second pusher 422 gradually moves away from the second brush head 3, while the first pusher 421 contacts the second brush head 3 and moves it upward. When the transmission rod 41 rotates back to the left and returns to its initial position, the second pusher 422 contacts the second brush head 3 again; as the transmission rod 41 continues to rotate to the left, the second pusher 422 begins to drive the second brush head 3 downward, while the first pusher 421 gradually moves away from the second brush head 3. In this way, the partial rotation of the transmission rod 41 effectively drives the second cleaning unit to move up and down, achieving a more efficient and uniform cleaning effect.

[0079] like Figures 11 to 13 As shown, in one embodiment of the present disclosure, the first pushing surface 4211 is a twisted surface; and / or, the second pushing surface 4221 is a twisted surface; and / or, the first pushing portion 421 and the second pushing portion 422 are spaced apart along the extension direction of the axis; and / or, the first pushing surface 4211 is constructed to gradually move away from the second brush head 3 along the third direction; and / or, the second pushing surface 4221 is constructed to gradually move away from the second brush head 3 along the fourth direction; and / or, the first pushing surface 4211 is constructed to gradually narrow in a direction away from the transmission rod 41; and / or, the second pushing surface 4221 is constructed to gradually narrow in a direction away from the transmission rod 41.

[0080] Specifically, the first pushing surface 4211 and / or the second pushing surface 4221 are configured as twisted surfaces and gradually narrow in a direction away from the transmission rod 41. This can reduce the direct contact area between the first pushing surface 4211 and the second pushing surface 4221 and the second cleaning unit, thereby reducing friction and wear, extending service life, reducing noise generated during transmission, and improving user experience. In addition, it also helps to reduce unnecessary energy loss and improve the overall energy efficiency of the system. Arranging the two pushing parts at intervals along the extension direction of the axis can avoid interference between the two pushing parts and ensure that each pushing part can independently complete its predetermined movement.

[0081] like Figures 11 to 13 As shown, in one embodiment of the present disclosure, a first mating portion 8 and a second mating portion 9 are provided on the second brush head 3; the first pushing portion 421 is constructed to abut against the first mating portion 8 when the transmission assembly 4 rotates in the first direction, so as to push the second brush head 3 to generate a displacement movement along the third direction; the second pushing portion 422 is constructed to abut against the second mating portion 9 when the transmission assembly 4 rotates in the second direction, so as to push the second brush head 3 to generate a displacement movement along the fourth direction.

[0082] Specifically, when the transmission rod 41 rotates in a first direction (e.g., rightward), the first push portion 421 rotates with the transmission rod 41 in the first direction (e.g., rightward). At this point, the first push surface 4211 on the first push portion 421 abuts the first mating portion 8 on the second brush head 3, thereby pushing the second brush head 3 to move in a third direction (e.g., upward). When the transmission rod 41 rotates in a second direction (e.g., leftward), the second push portion 422 rotates with the transmission rod 41 in the second direction (e.g., leftward). At this point, the second push surface 4221 on the second push portion 422 abuts the second mating portion 9 on the second brush head 3, pushing the second brush head 3 to move in a fourth direction (e.g., downward). The third and fourth directions are opposite, meaning that when the transmission rod 41 changes its rotational direction, the second brush head 3 also changes its direction of movement, thereby achieving reciprocating linear motion. This allows the second brush head 3 to move up and down, accessing hard-to-reach areas such as between teeth and in the gingival sulcus, and remove residue and plaque hidden there.

[0083] like Figures 11 to 13 As shown, in another embodiment of the present disclosure, when the transmission rod 41 rotates to the right, the first brush head 2 rotates clockwise; during this process, the second pushing portion 422 gradually leaves the second mating portion 9 of the second brush head 3, while the first pushing portion 421 contacts the first mating portion 8 of the second brush head 3 and moves the second brush head 3 upward. When the transmission rod 41 rotates back to the left and returns to its initial position, the second pushing portion 422 contacts the second mating portion 9 of the second brush head 3 again; when the transmission rod 41 continues to rotate to the left, the second pushing portion 422 begins to drive the second mating portion 9 of the second brush head 3 to move the second brush head 3 downward, while the first pushing portion 421 gradually moves away from the first mating portion 8 of the second brush head 3. In this way, the partial rotation of the transmission rod 41 effectively drives the second cleaning unit to move up and down, achieving a more efficient and uniform cleaning effect.

[0084] like Figures 11 to 13 As shown, in one embodiment of the present disclosure, the surface on the first mating portion 8 for mating with the first pushing surface 4211 is constructed as an inclined surface or an arc surface; the surface on the second mating portion 9 for mating with the second pushing surface 4221 is constructed as an inclined surface or an arc surface.

[0085] Specifically, the provision of an inclined or arcuate surface helps improve power transmission efficiency, ensuring smoother power conversion, and can reduce the direct contact area between the mating portion and the pushing surface, thereby reducing friction and wear and extending service life. The provision of an arcuate surface provides a smoother contact surface, helping to improve the stability of the movement of the second cleaning unit. The design of the inclined or arcuate surface can adjust the contact angle of the mating portion according to different operating conditions, increasing the flexibility of the transmission assembly 4.

[0086] like Figure 13 As shown, in one embodiment of the present disclosure, a blocking portion 10 is provided on the transmission assembly 4, and the blocking portion 10 and the first pushing portion 421 are constructed to be located on the same side of the transmission assembly 4; when the second brush head 3 moves in a direction away from the first brush head 2 to a predetermined position, it abuts against the blocking portion 10; when the second brush head 3 moves in a direction close to the first brush head 2 to a predetermined position, it abuts against the first brush head 2.

[0087] Specifically, a blocking portion 10 is also provided on the transmission assembly 4. The blocking portion 10 and the first pushing portion 421 are located on the same side of the transmission assembly 4. This ensures that when the second brush head 3 moves to a predetermined position in a direction away from the first brush head 2, the second brush head 3 will abut against the blocking portion 10, thereby limiting the range of motion of the second brush head 3 and preventing excessive displacement. When the second brush head 3 moves to a predetermined position in a direction close to the first brush head 2, it will abut against the first brush head 2, similarly limiting its range of motion. The presence of the blocking portion 10 helps ensure that the reciprocating linear motion of the second brush head 3 occurs within a predetermined range, avoiding structural damage or discomfort to the user's oral cavity that may be caused by excessive displacement.

[0088] like Figures 2 to 4 As shown, in one embodiment of the present disclosure, the second brush head 3 is adjacent to one side of the first brush head 2 and is constructed to have an arc groove structure that matches a portion of the outer surface of the first brush head 2 .

[0089] Specifically, since the second brush head 3, during its reciprocating motion, abuts against the blocking portion 10 when it moves away from the first brush head 2 to a predetermined position, and abuts against the first brush head 2 when it moves toward the first brush head 2 to a predetermined position, the side of the second brush head 3 adjacent to the first brush head 2 is constructed to have an arc groove structure that matches a portion of the outer surface of the first brush head 2. This arrangement optimizes the coordination between the first brush head 2 and the second brush head 3, avoids additional interference during movement, and provides a more aesthetically pleasing design.

[0090] like Figure 1 and Figure 10 As shown, in one embodiment of the present disclosure, the brush head also includes a fixing part 11 arranged in the inner cavity of the brush head body 1, and the fixing part 11 cooperates with the gripping part 12 with a built-in power source. When the power source drives the transmission assembly 4, the brush head body 1 and the gripping part 12 do not rotate relative to each other.

[0091] Specifically, the brush head further includes a fixing member 11 disposed within the inner cavity of the brush head body 1. The fixing member 11 cooperates with a grip portion 12 having a built-in power source to ensure that when the power source operates to drive the transmission assembly 4, the brush head body 1 and the grip portion 12 do not rotate relative to each other, thereby maintaining the stability of the brush head body 1 and ensuring that the first brush head 2 and the second brush head 3 can stably perform their respective movements in a predetermined manner.

[0092] like Figure 1 and Figure 10 As shown, according to a second aspect of the present disclosure, the present disclosure provides an electric toothbrush comprising a grip portion 12 and the brush head as described above.

[0093] Specifically, the gripping portion 12 is the handheld portion of the user, and usually has a built-in power source (such as a motor) and other electronic components, which are responsible for providing electricity and control signals to the brush head so that it can operate in a predetermined manner. When the power source drives the transmission assembly 4 to move, it drives the first brush head 2 and the second brush head 3 to move in a predetermined manner. The rotation of the first brush head 2 can effectively remove dental plaque and food debris on the tooth surface and smooth areas, while the linear reciprocating motion of the second brush head 3 can better enter the hard-to-reach areas such as the tooth gaps and gingival sulci, and remove the residues and plaque hidden in these areas. By combining the gripping portion 12 with the above-mentioned brush head, the electric toothbrush proposed in the present disclosure can provide a more comprehensive and efficient cleaning effect, which not only ensures that the tooth surface and gaps can be thoroughly cleaned, but also better protects the health of the gums and reduces discomfort during the cleaning process.

[0094] The present disclosure provides a brush head and electric toothbrush for use with an electric toothbrush. The reciprocating motion of the first brush head effectively cleans tooth surfaces and smooth areas, while the linear reciprocating motion of the second brush head penetrates deeper into hard-to-reach areas such as tooth gaps and gum sulci, removing hidden residue and plaque. This not only improves the comprehensiveness and depth of cleaning, but also better protects gum health, reduces gum irritation and damage caused by improper cleaning, significantly enhances cleaning effectiveness, provides a more efficient and detailed oral cleaning experience, and contributes to maintaining good oral hygiene.

[0095] It should be noted that for the aforementioned method embodiments, for ease of description, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the present disclosure is not limited by the order of the actions described, because according to the present disclosure, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present disclosure.

[0096] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0097] The preferred embodiments of the present disclosure disclosed above are intended only to help illustrate the present disclosure. The optional embodiments do not describe all details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made based on the content of the present disclosure. The present disclosure selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present disclosure, so that those skilled in the art can better understand and utilize the present disclosure. The present disclosure is limited only by the claims and their full scope and equivalents.

Claims

1. A brush head for an electric toothbrush, characterized in that: include: A brush head body (1), the brush head body (1) having two opposite ends along an extension direction of its axis, respectively denoted as a first end and a second end; a first brush head (2) and a second brush head (3) are provided at the first end of the brush head body (1); the first brush head (2) is rotatably connected to the brush head body (1); and the second brush head (3) is constructed to slide along a straight line on the brush head body (1); A transmission assembly (4), the transmission assembly (4) being configured to be rotatably connected to the brush head body (1), and being configured to drive the first brush head (2) to rotate back and forth, and to drive the second brush head (3) to reciprocate linearly, during a process of reciprocating rotation relative to the brush head body (1).

2. The brush head according to claim 1, characterized in that The second brush head (3) is configured to reciprocate linearly along the axis of the brush head body (1); and the rotation axis of the first brush head (2) is configured to be perpendicular to the axis of the brush head body (1).

3. The brush head according to claim 1, characterized in that The transmission assembly (4) comprises a transmission rod (41) extending along the axis and a pushing member (42) arranged on the transmission rod (41).

4. The brush head according to claim 3, characterized in that The first brush head (2) is configured to be connected to the brush head body (1) via a rotating shaft (5); a matching hole (6) is provided at a position of the first brush head (2) that deviates from the center of the circle thereof, and a bent portion (7) extending perpendicularly to the axis of the brush head body (1) is provided at the end of the transmission assembly (4); the bent portion (7) is configured to cooperate with the matching hole (6) so that the transmission assembly (4) drives the first brush head (2) to swing back and forth within a predetermined angle around the rotating shaft (5).

5. The brush head according to claim 4, characterized in that The matching hole (6) is elliptical, and the direction in which its major axis extends is the same as the direction in which the axis of the brush head body (1) extends.

6. The brush head according to claim 5, characterized in that The major axis dimension of the matching hole (6) is larger than the dimension of the bending portion (7) in the corresponding direction.

7. The brush head according to claim 3, characterized in that The pushing member (42) comprises a first pushing portion (421) and a second pushing portion (422) extending radially along the axis and respectively arranged on both sides of the transmission rod (41); the first pushing portion (421) is provided with a first pushing surface (4211), and the second pushing portion (422) is provided with a second pushing surface (4221); the first pushing portion (421) is configured so that when the transmission rod (41) rotates in the first direction, at least part of the rotational action pushes the second brush head (3) to generate displacement movement in a third direction; the second pushing portion (422) is configured so that when the transmission rod (41) rotates in the second direction, at least part of the rotational action pushes the second brush head (3) to generate displacement movement in a fourth direction, and the third direction is opposite to the fourth direction.

8. The brush head according to claim 7, characterized in that The first pushing surface (4211) is a twisted surface; and / or, The second pushing surface (4221) is a twisted surface; and / or, The first pushing portion (421) and the second pushing portion (422) are arranged at intervals along the extension direction of the axis; and / or, The first pushing surface (4211) is configured to gradually move away from the second brush head (3) along a third direction; and / or, The second pushing surface (4221) is configured to gradually move away from the second brush head along a fourth direction; and / or, The first pushing surface (4211) is configured to gradually narrow in a direction away from the transmission rod (41); and / or, The second pushing surface is configured to gradually narrow in a direction away from the transmission rod (41).

9. The brush head according to claim 8, characterized in that The second brush head (3) is provided with a first matching portion (8) and a second matching portion (9); the first pushing portion (421) is configured to abut against the first matching portion (8) when the transmission assembly (4) rotates in the first direction, so as to push the second brush head (3) to generate displacement movement along a third direction; the second pushing portion (422) is configured to abut against the second matching portion (9) when the transmission assembly (4) rotates in the second direction, so as to push the second brush head (3) to generate displacement movement along a fourth direction.

10. The brush head according to claim 9, characterized in that The surface of the first matching portion (8) for matching with the first pushing surface (4211) is constructed as an inclined surface or an arc surface; the surface of the second matching portion (9) for matching with the second pushing surface (4221) is constructed as an inclined surface or an arc surface.

11. The brush head according to claim 8, characterized in that The transmission assembly (4) is provided with a blocking portion (10), and the blocking portion (10) and the first pushing portion (421) are constructed to be located on the same side of the transmission assembly (4); when the second brush head (3) moves in a direction away from the first brush head (2) to a predetermined position, it abuts against the blocking portion (10); when the second brush head (3) moves in a direction close to the first brush head (2) to a predetermined position, it abuts against the first brush head (2).

12. The brush head according to claim 11, characterized in that The second brush head (3) is adjacent to one side of the first brush head (2) and is constructed to have an arc groove structure that matches a portion of the outer surface of the first brush head (2).

13. The brush head according to claim 1, characterized in that The brush head further comprises a fixing member (11) arranged in the inner cavity of the brush head body (1), wherein the fixing member (11) cooperates with a gripping portion (12) having a built-in power source, so that when the power source operates to drive the transmission assembly (4), the brush head body (1) and the gripping portion (12) do not rotate relative to each other.

14. An electric toothbrush, characterized in that: include: a grip portion (12); A brush head according to any one of claims 1 to 13.

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