Brush head and electric toothbrush

Abstract

The utility model relates to a brush head and an electric toothbrush, the brush head is configured to be installed on a machine body and comprises a brush head body, a cleaning part and a transmission part, the cleaning part comprises a first brush head and a second brush head, and the second brush head is configured to be pivotable; the transmission part comprises a first transmission piece and a second transmission piece, the first transmission piece and the second transmission piece are connected through a connecting piece, in the extension direction of the first axis, by taking the connecting piece as a boundary, one end of the second transmission piece is configured to be matched with a limiting part correspondingly arranged on the machine body, and the other end of the second transmission piece is configured to be eccentrically matched with the second brush head; the electric toothbrush comprises a machine body, a power shaft and a brush head, the brush head is connected with the machine body through the power shaft, the power shaft is constructed as an external vibration source of the brush head, and a cleaning part of the brush head is constructed to vibrate relative to the machine body. According to the brush head and the electric toothbrush provided by the invention, multi-mode composite motion of reciprocating vibration and reciprocating rotation can be realized, and the cleaning capability on interdental crevices and tooth roots is enhanced.

Description

Technical Field

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

[0002] Maintaining oral hygiene, especially regular and effective teeth cleaning, is fundamental to oral and overall health. This practice is crucial for preventing the accumulation of dental plaque. If plaque isn't removed promptly, it will gradually calcify into tartar, whose edges continuously irritate the gums, triggering an inflammatory response, initially gingivitis, which can then progress to periodontitis. Periodontal disease not only affects the stability of teeth and, in severe cases, can lead to tooth loss, but is also associated with a variety of systemic diseases. Therefore, taking correct and regular dental cleaning measures is a key step in protecting oral health and overall health.

[0003] Existing toothbrush technologies are mostly limited to two-dimensional motion patterns, such as high-frequency sonic vibration, reciprocating rotation, or reciprocating rotation combined with up-and-down movement of the bristles. These all focus on cleaning actions in a two-dimensional dimension. However, relying solely on a single motion pattern limits the effectiveness of toothbrushes in achieving comprehensive oral cleaning. Utility Model Content

[0004] In view of this, the embodiments of the present disclosure provide a brush head 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] In a first aspect of the present disclosure, the present disclosure provides a brush head, which is configured to be mounted on a body, comprising:

[0007] a brush head body configured to extend along a first axis and including sidewalls defining an open cavity;

[0008] a cleaning portion attached to one end of the brush head body, the cleaning portion comprising a first brush head and a second brush head, wherein the second brush head is configured to be pivotable;

[0009] The transmission part at least partially disposed in the cavity includes a first transmission member and a second transmission member, wherein:

[0010] The first transmission member and the second transmission member are connected by a connecting member. Along the extension direction of the first axis, with the connecting member as the boundary, one end of the second transmission member is constructed to cooperate with the corresponding limiting part set on the body, and the other end is constructed to eccentrically cooperate with the second brush head; when the first transmission member is driven by the external vibration source, it drives one end of the second transmission member to swing, and the second transmission member uses the connecting member as a fulcrum, so that the other end of the second transmission member drives the second brush head to rotate.

[0011] In one embodiment of the present disclosure, one end of the second transmission member is partially restricted from moving by the limiting portion, and the other end thereof swings in the opposite direction with the connecting member as a fulcrum, thereby driving the second brush head to rotate.

[0012] In one embodiment of the present disclosure, a groove is provided at the end of one end of the first transmission member, and a matching portion is provided on the second transmission member, and the matching portion is configured to match with the groove to form the connecting member.

[0013] In one embodiment of the present disclosure, when the first transmission member is driven by the external vibration source, it reciprocates around the first axis as the rotation center, and drives one end of the second transmission member to swing back and forth;

[0014] When one end of the second transmission member swings back and forth, the other end thereof swings back and forth in the opposite direction with the connecting member as a fulcrum, thereby driving the second brush head to rotate back and forth.

[0015] In one embodiment of the present disclosure, the limiting portion has a limiting area, one end of the second transmission member has a limiting segment, and the limiting area is configured to cooperate with the limiting segment.

[0016] In one embodiment of the present disclosure, when the first transmission member is driven by the external vibration source, it rotates back and forth with the first axis as the rotation center, and the limiting area limits the movement of the limiting section, so that the other end of the second transmission member is relatively displaced relative to the connecting member along the extension direction of the first axis.

[0017] In one embodiment of the present disclosure, along the extension direction of the first axis, the connecting member is located between the other end of the second transmission member and the limiting portion.

[0018] In one embodiment of the present disclosure, along the extension direction of the first axis, the connecting member is located between one end and the other end of the second transmission member.

[0019] In one embodiment of the present disclosure, the cleaning portion further includes an assembly part, the first brush head and the second brush head are both disposed on the assembly part, and the assembly part is attached to one end of the brush head body.

[0020] In one embodiment of the present disclosure, the second brush head has a first side surface and a second side surface opposite to each other, and brush filaments extend from the first side surface;

[0021] A pivoting member is formed on the second side surface, and the pivoting member is pivotally matched with the assembly member.

[0022] In one embodiment of the present disclosure, a driving member eccentrically matched with the second brush head is formed at the other end of the second transmission member, and a coupling member is formed corresponding to a position of the second side surface deviating from the center of the side surface. The driving member cooperates with the coupling member. When one end of the second transmission member swings, the second transmission member uses the connecting member as a fulcrum to enable the driving member to drive the second brush head to rotate.

[0023] In one embodiment of the present disclosure, the driving member is an open slot member, the engaging member is a cylindrical member, and the diameter of the open slot member is greater than the diameter of the cylindrical member.

[0024] In one embodiment of the present disclosure, the first transmission member is connected to the brush head body along the extension direction of the first axis. When the external vibration source drives the first transmission member, the first transmission member drives the brush head body to drive the first brush head and the second brush head to vibrate back and forth.

[0025] In one embodiment of the present disclosure, a limiting groove is provided in the assembly part, one end of the second transmission member is connected to the first transmission member, and the other end is accommodated in the limiting groove. When the external vibration source drives the first transmission member, the first transmission member drives one end of the second transmission member to swing back and forth, and the other end of the second transmission member swings back and forth in the opposite direction, driving the second brush head to rotate back and forth.

[0026] In a second aspect of the present disclosure, the present disclosure provides an electric toothbrush comprising:

[0027] a body configured to be held;

[0028] a power shaft, the power shaft being mounted on the fuselage;

[0029] According to the brush head as described above, the brush head is configured to be connected to the body via the power shaft, the power shaft is configured to be an external vibration source of the brush head, and the cleaning portion of the brush head is configured to vibrate relative to the body.

[0030] In one embodiment of the present disclosure, the limiting portion is a limiting area provided on the fuselage, and the limiting area is configured to extend along the circumferential direction of the fuselage; the limiting section of the second transmission member is configured to extend into the limiting area.

[0031] The brush head and electric toothbrush provided by the present disclosure can realize multi-modal composite motion of reciprocating vibration and reciprocating rotation, thereby enhancing the cleaning ability of the grooves between teeth and the roots of teeth.

[0032] 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

[0033] Figure 1 This is a schematic diagram of the specific structure of a brush head provided by an embodiment of the present disclosure;

[0034] Figure 2 This is a schematic diagram of the exploded structure of a brush head provided by an embodiment of the present disclosure;

[0035] Figure 3 This is a partial structural diagram of a brush head provided by an embodiment of the present disclosure;

[0036] Figure 4 This is a front view of a brush head provided by an embodiment of the present disclosure;

[0037] Figure 5 is a bottom view of a brush head provided in one embodiment of the present disclosure;

[0038] Figure 6 is a top view of a brush head provided in one embodiment of the present disclosure;

[0039] Figure 7 is a right side view of a brush head provided in one embodiment of the present disclosure;

[0040] Figure 8 is a left side view of a brush head provided in one embodiment of the present disclosure;

[0041] Figure 9 This is a schematic diagram of the motion state of a brush head provided by an embodiment of the present disclosure;

[0042] Figure 10 This is a schematic diagram of the motion state of a brush head provided by an embodiment of the present disclosure;

[0043] Figure 11 This is a schematic diagram of the motion state of a brush head provided by an embodiment of the present disclosure;

[0044] Figure 12 This is a schematic diagram of the exploded structure of an electric toothbrush provided in one embodiment of the present disclosure.

[0045] 1-brush head body; 2-cleaning part; 21-first brush head; 22-second brush head; 221-brush filament; 222-pivot member; 23-assembly member; 231-limiting groove; 3-transmission part; 31-first transmission member; 32-second transmission member; 321-limiting section; 4-connecting member; 41-groove; 42-matching part; 5-limiting area; 6-driving member; 7-jointing member; 8-power shaft; 9-body. 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 and an electric toothbrush, wherein the brush head is constructed to be mounted on a body, and includes a brush head body, a cleaning part and a transmission part, the cleaning part includes a first brush head and a second brush head, and the second brush head is constructed to be pivotable; the transmission part includes a first transmission member and a second transmission member, the first transmission member and the second transmission member are connected by a connecting member, and extend along a first axis, with the connecting member as the boundary, one end of the second transmission member is constructed to cooperate with a corresponding limit part provided on the body, and the other end is constructed to eccentrically cooperate with the second brush head; the electric toothbrush includes a body, a power shaft and a brush head, the brush head is constructed to be connected to the body through the power shaft, the power shaft is constructed as an external vibration source of the brush head, and the cleaning part of the brush head is constructed to vibrate relative to the body.

[0055] The brush head and electric toothbrush provided by the present disclosure can realize multi-modal composite motion of reciprocating vibration and reciprocating rotation, thereby enhancing the cleaning ability of the grooves between teeth and the roots of teeth.

[0056] For ease of understanding, refer to Figures 1 to 12 , the specific structure and working principle of the brush head and electric toothbrush disclosed in the present invention are explained in detail with reference to the embodiments.

[0057] like Figure 1 As shown, in the first aspect of the present disclosure, the present disclosure provides a brush head, which is configured to be mounted on a body 9, and includes a brush head body 1, a cleaning portion 2, and a transmission portion 3. The brush head body 1 is configured to extend along a first axis and include side walls defining an open cavity; the cleaning portion 2 is attached to one end of the brush head body 1, and the cleaning portion 2 includes a first brush head 21 and a second brush head 22, and the second brush head 22 is configured to pivot; the transmission portion 3 is at least partially disposed in the cavity and includes a first transmission member 31 and a second transmission member 32, wherein: the first transmission member 31 and the second transmission member 32 are connected by a connecting member 4, extending along the first axis, with the connecting member 4 as the boundary, one end of the second transmission member 32 is configured to cooperate with a corresponding limit portion provided on the body 9, and the other end is configured to eccentrically cooperate with the second brush head 22; when the first transmission member 31 is driven by an external vibration source, it drives one end of the second transmission member 32 to swing, and the second transmission member 32 uses the connecting member 4 as a fulcrum, so that its other end drives the second brush head 22 to rotate.

[0058] Specifically, in this embodiment, the brush head is mounted on the body 9 and is mainly composed of three parts, namely, a brush head body 1, a cleaning portion 2, and a transmission portion 3. The brush head body 1 is a shell extending along a first axis and includes side walls defining an open cavity. A cleaning portion 2 is attached to one end of the brush head body 1 and is used to clean teeth. The cleaning portion 2 includes a first brush head 21 and a second brush head 22, wherein the second brush head 22 is a pivotable structure. The transmission portion 3 is disposed within the inner cavity of the brush head body 1 and includes a first transmission member 31 and a second transmission member 32. The first transmission member 31 and the second transmission member 32 are connected by a connecting member 4. The connecting member 4 serves not only as a connecting structure for the first transmission member 31 and the second transmission member 32, but also as a fulcrum for the movement of the second transmission member 32. In the extension direction along the first axis, with the connecting member 4 as the boundary, one end of the second transmission member 32 cooperates with the corresponding limit portion on the body, while the other end cooperates eccentrically with the second brush head 22. When the first transmission member 31 is driven by an external vibration source, the first transmission member 31 will drive one end of the second transmission member 32 to swing, and the second transmission member 32 uses the connecting member 4 as a fulcrum, so that the other end of the second transmission member 32 drives the second brush head 22 to rotate, thereby realizing a composite motion mode of reciprocating vibration and rotational motion of the brush head, thereby achieving comprehensive and deep cleaning of the teeth.

[0059] like Figures 9 to 11 As shown, in one embodiment of the present disclosure, one end of the second transmission member 32 is partially restricted from moving by the limiting portion, and the other end thereof swings in the opposite direction with the connecting member 4 as a fulcrum, driving the second brush head 22 to rotate.

[0060] Specifically, a limiting portion provided on the body 9 restricts partial movement of the second transmission member 32, ensuring that the second transmission member 32 moves in a predetermined manner and within a predetermined range. When the first transmission member 31 is driven by an external vibration source, the first transmission member 31 drives the second transmission member 32 to swing. Because one end of the second transmission member 32 is partially restricted in movement by the limiting portion, the second transmission member 32 cannot completely follow the motion trajectory of the first transmission member 31. Therefore, with the connecting member 4 as a fulcrum, the other end of the second transmission member 32 swings in the opposite direction. The other end of the second transmission member 32 eccentrically cooperates with the second brush head 22, so that the swinging of the second transmission member 32 drives the second brush head 22 to achieve rotational motion around itself. The provision of the limiting portion and the eccentric cooperation between the second transmission member 32 and the second brush head 22 achieve the conversion from linear motion to rotational motion, improve cleaning efficiency, and better adapt to the oral cavity and cleaning needs of different users.

[0061] like Figures 1 to 2As shown, in one embodiment of the present disclosure, a groove 41 is provided at the end of one end of the first transmission member 31, and a matching portion 42 is provided on the second transmission member 32. The matching portion 42 is constructed to match with the groove 41 to form a connecting member 4.

[0062] Specifically, a groove 41 is provided at the end of one end of the first transmission member 31, and a mating portion 42 is provided on the second transmission member 32. The shapes of the groove 41 and the mating portion 42 can be configured to match each other to form the connecting member 4. In this embodiment, the groove 41 is configured as an annular groove 41, and the mating portion 42 is configured as a cylindrical mating portion 42. The design of the annular groove 41 provides sufficient contact area to ensure a stable connection between the first transmission member 31 and the second transmission member 32. The cylindrical mating portion 42 is inserted into the annular groove 41 to form the connecting member 4. The first transmission member 31 and the second transmission member 32 are connected by the connecting member 4. Because the inner diameter of the annular groove 41 is slightly larger than the radius of the cylindrical mating portion 42, this close dimensional matching ensures a relatively stable connection between the first transmission member 31 and the second transmission member 32, preventing loosening or disengagement during use. And because the inner diameter of the annular groove 41 is slightly larger than the radius of the cylindrical mating portion 42, the second transmission member 32 can swing freely within a certain range without being restricted by the connecting member 4, ensuring that the second transmission member 32 can effectively convert the movement of the first transmission member 31 into the swinging motion of the second transmission member 32.

[0063] When the first transmission member 31 is driven by an external vibration source, it drives the connected second transmission member 32 into motion. Thanks to the tight fit between the annular groove 41 and the cylindrical mating portion 42, the movement of the first transmission member 31 is smoothly transmitted to the second transmission member 32. Despite some play, sufficient power transmission efficiency is ensured. The second brush head 22 can effectively rotate with the swing of the second transmission member 32, thereby enhancing cleaning effectiveness.

[0064] like Figure 1 、 Figures 9 to 11 As shown, in one embodiment of the present disclosure, when the first transmission member 31 is driven by an external vibration source, it rotates back and forth with the first axis as the rotation center, and drives one end of the second transmission member 32 to swing back and forth; when one end of the second transmission member 32 swings back and forth, with the connecting member 4 as the fulcrum, the other end of the second transmission member 32 swings back and forth in the opposite direction, driving the second brush head 22 to rotate back and forth.

[0065] Specifically, when driven by an external vibration source, the first transmission member 31 performs forward and reverse rotational motion around the first axis. Here, forward and reverse rotational motion refer to clockwise and counterclockwise rotational motion along the first axis. One end of the second transmission member 32 is connected to the first transmission member 31 via a connector 4. When the first transmission member 31 rotates back and forth, the first transmission member 31 drives one end of the second transmission member 32 to swing back and forth. Because one end of the second transmission member 32 cooperates with a limiter provided on the fuselage 9, the limiter limits the swing amplitude of the second transmission member 32, allowing it to swing only within a certain range. This ensures that the motion trajectory of the second transmission member 32 meets expectations and increases the stability of the system.

[0066] When one end of the second transmission member 32 is driven by the first transmission member 31 to swing back and forth, since the connecting member 4 serves as the swing fulcrum, the second transmission member 32 will move with the connecting member 4 as the fulcrum, that is, the other end of the second transmission member 32 will swing back and forth in the opposite direction to maintain balance. The other end of the second transmission member 32 is eccentrically matched with the second brush head 22, which means that the reciprocating swinging of the second transmission member 32 will drive the second brush head 22 to rotate back and forth, so that the second brush head 22 can perform efficient rotational motion within a smaller range, thereby achieving effective cleaning of the teeth. Through such a transmission mechanism, the cleaning part 2 and the transmission part 3 of the brush head work together, so that the brush head can more effectively cover all areas that need to be cleaned when cleaning the teeth, which not only improves the cleaning efficiency, but also enhances the reliability and durability of the system.

[0067] like Figure 3 As shown, in one embodiment of the present disclosure, the limiting portion has a limiting area 5 , one end of the second transmission member 32 has a limiting segment 321 , and the limiting area 5 is configured to cooperate with the limiting segment 321 .

[0068] Specifically, the limiting portion is provided with a limiting area 5, and the second transmission member 32 has a limiting section 321 that mates with the limiting area 5. The limiting portion is provided on the body 9. In this embodiment, the limiting area 5 is shaped like a notch, which is designed to match the limiting section 321 and mate with the limiting section 321 on the second transmission member 32. The limiting section 321 allows the second transmission member 32 to mate with the limiting area 5 of the limiting portion during swinging, thereby limiting its range of motion and preventing excessive swinging or dislodging. When one end of the second transmission member 32 begins to swing, the limiting section 321 contacts the limiting area 5 of the limiting portion, allowing the second transmission member 32 to swing in a controlled manner within the constraints of the limiting portion. Due to the presence of the connecting member 4, the other end of the second transmission member 32 rotates about the connecting member 4 as a fulcrum. When one end of the second transmission member 32 swings back and forth, the other end swings in the opposite direction. This is because when one end is constrained by the limiting portion, the other end must rotate to maintain system balance. Through the design of the limiting portion and the limiting section 321, the entire transmission system achieves effective control over the movement of the second transmission member 32, ensuring that the second brush head 22 can reciprocate within a predetermined range, thereby improving cleaning efficiency.

[0069] like Figures 1 to 3 As shown, in one embodiment of the present disclosure, when the first transmission member 31 is driven by an external vibration source, it rotates back and forth with the first axis as the rotation center, and the limiting area 5 limits the movement of the limiting section 321, so that the other end of the second transmission member 32 is relatively displaced relative to the connecting member 4 along the extension direction of the first axis.

[0070] Specifically, when the first transmission member 31 is driven by an external vibration source, the first transmission member 31 rotates back and forth about the first axis within a certain angle. The reciprocating rotation of the first transmission member 31 drives one end of the second transmission member 32 to swing. Since the other end of the second transmission member 32 cooperates with the limiting area 5 of the limiting portion, the limiting area 5 will limit the movement of the second transmission member 32. The limiting area 5 of the limiting portion limits the swing amplitude of the second transmission member 32, so that one end of the second transmission member 32 can only swing within a certain range. At the same time, the other end of the second transmission member 32 will produce a relative displacement along the direction of the first axis due to the cooperation between the limiting section 321 and the limiting area 5.

[0071] like Figure 1 As shown, in one embodiment of the present disclosure, along the extension direction of the first axis, the connecting member 4 is located between the other end of the second transmission member 32 and the limiting portion.

[0072] Specifically, the connector 4 is located between the other end of the second transmission member 32 and the limit portion. When one end of the second transmission member 32 is driven by the first transmission member 31 and swings, the other end cannot swing with it due to the restriction of the limit portion, but instead moves along the first axis. The connector 4 serves as a fulcrum, allowing the other end of the second transmission member 32 to move relative to the connector 4. This ensures that the other end of the second transmission member 32 is supported during swinging, thereby enhancing the overall stability and reliability of the system. The position of the connector 4 prevents the other end of the second transmission member 32 from becoming unstable during movement due to the lack of a fulcrum, ensuring that the second brush head 22 can rotate back and forth smoothly during use.

[0073] like Figure 1 As shown, in one embodiment of the present disclosure, along the extension direction of the first axis, the connecting member 4 is located between one end and the other end of the second transmission member 32.

[0074] Specifically, the connecting member 4 is arranged between one end and the other end of the second transmission member 32, that is, it is located in the middle position of the second transmission member 32. The connecting member 4 is located in the middle position of the second transmission member 32, acting as a fulcrum, so that the movement of the two ends of the second transmission member 32 can be more balanced. When the first transmission member 31 drives one end of the second transmission member 32 to swing back and forth, the other end will also produce corresponding swing or displacement due to the connecting member 4 as a fulcrum. In this way, the movement of the two ends of the second transmission member 32 is more coordinated, the imbalance caused by unilateral swing is reduced, and the stability and reliability of the entire system are improved. In addition, since the connecting member 4 is located in the middle position, it can better disperse and balance the power from the first transmission member 31, so that the displacement of the two ends of the second transmission member 32 is more uniform, and the power of the first transmission member 31 can be better distributed evenly to the two ends of the second transmission member 32. This design makes power transmission more efficient and reduces energy loss.

[0075] like Figures 1 to 2 As shown, in one embodiment of the present disclosure, the cleaning portion 2 further includes an assembly part 23 , and the first brush head 21 and the second brush head 22 are both disposed on the assembly part 23 , and the assembly part 23 is attached to one end of the brush head body 1 .

[0076] Specifically, the assembly 23, as part of the cleaning section 2, is used to support the first and second brush heads 21, 22. The assembly 23 is attached to one end of the brush body 1, connecting the entire cleaning section 2 to the brush body 1 as a whole. The assembly 23 not only serves as a mounting base for the first and second brush heads 21, 22, but also as a connecting device between the entire cleaning section 2 and the brush body 1. The arrangement of the assembly 23 ensures that the first and second brush heads 21, 22 are securely fixed to the brush head and can swing or rotate accordingly with the movement of the second transmission member 32. The integration of the first and second brush heads 21, 22 by the assembly 23 makes the entire cleaning section 2 more stable and reduces the risk of shaking or loosening caused by separate installation. The design of the assembly 23 simplifies the brush head assembly process. Users only need to secure the assembly 23 to one end of the brush body 1, eliminating the need to install each brush head separately, reducing assembly difficulty. The first and second brush heads 21, 22 share the assembly 23, allowing them to work synergistically during operation, improving cleaning efficiency. In particular, the second brush head 22 can effectively rotate or swing through the eccentric fit, further enhancing the cleaning effect. If the brush head needs to be replaced, the user only needs to replace the entire assembly 23, without having to replace the first brush head 21 or the second brush head 22 separately, simplifying the replacement process.

[0077] like Figures 4 to 8 As shown, in one embodiment of the present disclosure, the second brush head 22 has a first side surface and a second side surface opposite to each other, and a brush filament 221 extends from the first side surface; a pivot member 222 is formed on the second side surface, and the pivot member 222 and the assembly member 23 can be pivotally matched.

[0078] Specifically, the second brush head 22 is provided with two opposing side surfaces, namely a first side surface and a second side surface. Brush filaments 221 are evenly extended from the first side surface, and the brush filaments 221 are used to clean teeth. A pivot member 222 is provided on the second side surface. The pivot member 222 forms a pivotable fit with the assembly 23, and the brush head can rotate relative to the assembly 23 via the pivot member 222. When the first transmission member 31 reciprocates around the first axis, the first transmission member 31 drives one end of the second transmission member 32 to swing back and forth, and the other end of the second transmission member 32 eccentrically engages with the pivot member 222 of the second brush head 22 on the assembly 23. When one end of the second transmission member 32 swings, the other end will displace along the first axis. This displacement is transmitted to the second brush head 22 via the pivot member 222, allowing the second brush head 22 to reciprocate or swing.

[0079] like Figures 9 to 11As shown, in one embodiment of the present disclosure, the other end of the second transmission member 32 is formed with a driving member 6 that eccentrically cooperates with the second brush head 22, and a coupling member 7 is formed corresponding to the second side surface deviating from the center position of the side surface. The driving member 6 cooperates with the coupling member 7. When one end of the second transmission member 32 swings, the second transmission member 32 uses the connecting member 4 as a fulcrum to enable the driving member 6 to drive the second brush head 22 to rotate.

[0080] Specifically, the driving member 6 is located at the other end of the second transmission member 32 and is eccentrically matched with the coupling member 7 of the second brush head 22. The coupling member 7 is located on the second side of the second brush head 22 and deviates from the center of the side. The driving member 6 is located at the other end of the second transmission member 32. Its shape and position can match the coupling member 7 on the second brush head 22, ensuring that power can be effectively transmitted from the second transmission member 32 to the second brush head 22. The arrangement of the coupling member 7 enables the second brush head 22 to reciprocate or swing under the drive of the second transmission member 32. The eccentric fit enables the second brush head 22 to swing back and forth by driving the coupling member 7 through the driving member 6 when one end of the second transmission member 32 swings, thereby causing the second brush head 22 to reciprocate or swing, making the movement of the second brush head 22 more flexible and better adaptable to the shape of the tooth surface.

[0081] like Figures 9 to 11 As shown, in one embodiment of the present disclosure, the driving member 6 is an open groove member, the engaging member 7 is a cylindrical member, and the diameter of the open groove member is larger than the diameter of the cylindrical member.

[0082] Specifically, the driving member 6 is configured as an open-grooved member, allowing it to accommodate the engaging member 7 and, when swung, to drive the engaging member 7 to move accordingly. The diameter of the open-grooved member is larger than that of the engaging member 7, allowing the cylindrical member to slide freely within the open-grooved member, achieving an eccentric fit. The engaging member 7 is a cylindrical member located on the second side surface of the second brush head 22, offset from the side surface center, allowing the engaging member 7 to slide within the open-grooved member, thereby achieving rotation or oscillation of the second brush head 22.

[0083] When the external vibration source is activated, the first transmission member 31 rotates back and forth around the first axis. The first transmission member 31 drives one end of the second transmission member 32 to swing back and forth. Since the limiting portion limits the limiting section 321 of the second transmission member 32, the other end of the second transmission member 32 will swing or displace with the connecting member 4 as a fulcrum. When one end of the second transmission member 32 swings, the other end will swing with the connecting member 4 as a fulcrum. Since the driving member 6 is an open groove member and the coupling member 7 is a cylindrical member, the diameter of the open groove member is larger than the diameter of the cylindrical member, so that the cylindrical member can slide in the open groove. This sliding enables the driving member 6 to drive the coupling member 7, thereby causing the second brush head 22 to rotate back and forth or swing.

[0084] like Figure 1 As shown, in one embodiment of the present disclosure, along the extension direction of the first axis, the first transmission member 31 is connected to the brush head body 1. When the external vibration source drives the first transmission member 31, the first transmission member 31 drives the brush head body 1 to drive the first brush head 21 and the second brush head 22 to vibrate back and forth.

[0085] The first transmission member 31 is connected to the brush body 1 and is located within the brush body 1, extending along the first axis. When driven by an external vibration source, the first transmission member 31 not only causes the second transmission member 32 to oscillate, but also, through the brush body 1, causes the first and second brush heads 21, 22 to vibrate back and forth. The vibration of the brush body 1 driven by the first transmission member 31 and the rotation of the second brush head 22 driven by the second transmission member 32 enable the brush head to perform multiple motion modes during use, enhancing cleaning effectiveness.

[0086] like Figure 1 As shown, in one embodiment of the present disclosure, a limiting groove 231 is provided in the assembly part 23, one end of the second transmission member 32 is connected to the first transmission member 31, and the other end is accommodated in the limiting groove 231. When the external vibration source drives the first transmission member 31, the first transmission member 31 drives one end of the second transmission member 32 to swing back and forth, and the other end of the second transmission member 32 swings back and forth in the opposite direction, driving the second brush head 22 to rotate back and forth.

[0087] Specifically, one end of the second transmission member 32 is connected to the first transmission member 31, and the other end is accommodated in a retaining groove 231 within the assembly 23. Since the other end of the second transmission member 32 is accommodated in the retaining groove 231 within the assembly 23, the retaining groove 231 restricts the movement of the second transmission member 32. The retaining groove 231 is provided within the assembly 23 to accommodate the other end of the second transmission member 32. The design of the retaining groove 231 limits the range of motion of the other end of the second transmission member 32, ensuring that it can only swing along a predetermined trajectory. The first transmission member 31 is connected to one end of the second transmission member 32. When the first transmission member 31 rotates, it drives one end of the second transmission member 32 to swing back and forth. The retaining groove 231 restricts the other end of the second transmission member 32, allowing it to swing around the connecting member 4. This swinging occurs in opposite directions, allowing the second brush head 22 to rotate or swing back and forth.

[0088] like Figure 12As shown, in the second aspect of the present disclosure, the present disclosure provides an electric toothbrush, including: a body 9, which is constructed for holding; a power shaft 8, which is installed on the body 9; according to the brush head as described above, the brush head is constructed to be connected to the body 9 through the power shaft 8, the power shaft 8 is constructed as an external vibration source of the brush head, and the cleaning part 2 of the brush head is constructed to vibrate relative to the body 9.

[0089] Specifically, the body 9 is constructed for holding and is usually made of plastic or metal material, and the surface is anti-slip treated so that the user can hold it firmly during use. A power source (such as a motor), a battery and other electronic control components are installed on the body 9. The power shaft 8 is installed on the body 9, one end of which is connected to the power source and the other end is connected to the brush head. The power shaft 8 is constructed as an external vibration source for the brush head. When the power source is started, the power shaft 8 will transmit power to the brush head, so that the brush head can vibrate. The brush head is constructed to be connected to the body 9 through the power shaft 8, and its cleaning part 2 is constructed to vibrate relative to the body 9. The brush head is the brush head described above. The specific structure can be referred to the above content and will not be repeated here.

[0090] When the power source is activated, the power shaft 8 reciprocates about the first axis. The power shaft 8 transmits power to the power input end of the brush head, causing the first transmission member 31 to reciprocate about the first axis. The first transmission member 31 drives one end of the second transmission member 32 to oscillate back and forth. Power transmitted through the power shaft 8 causes the brush head to vibrate and rotate back and forth. This motion pattern better adapts to the shape of the tooth surface and improves cleaning effectiveness.

[0091] like Figure 12 As shown, in one embodiment of the present disclosure, the limiting portion is a limiting area 5 provided on the fuselage 9 , and the limiting area 5 is constructed to extend along the circumferential direction of the fuselage 9 ; the limiting section 321 of the second transmission member 32 is constructed to extend into the limiting area 5 .

[0092] The limiting zone 5 is constructed to extend along the circumference of the body 9, thereby limiting the range of motion of the second transmission member 32. This circumferential extension of the limiting zone 5 ensures that the second transmission member 32 follows a predetermined path, preventing it from deviating from its set range of motion during swing, thereby ensuring system stability and reliability. The guiding effect of the limiting zone 5 ensures a more orderly movement of the second transmission member 32, reducing unnecessary shaking or jitter, and improving the stability of the entire system.

[0093] The brush head and electric toothbrush provided by the present disclosure can realize multi-modal composite motion of reciprocating vibration and reciprocating rotation, thereby enhancing the cleaning ability of the grooves between teeth and the roots of teeth.

[0094] 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.

[0095] 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.

[0096] 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, the brush head being configured to be mounted on a body (9), characterized in that: include: A brush head body (1), the brush head body (1) being configured to extend along a first axis and comprising side walls defining an open cavity; a cleaning portion (2) attached to one end of the brush head body (1), the cleaning portion (2) comprising a first brush head (21) and a second brush head (22), the second brush head (22) being configured to be pivotable; The transmission part (3) is at least partially disposed in the cavity, and comprises a first transmission member (31) and a second transmission member (32), wherein: The first transmission member (31) and the second transmission member (32) are connected via a connecting member (4). Along the extending direction of the first axis, with the connecting member (4) as a boundary, one end of the second transmission member (32) is constructed to cooperate with a corresponding limiting portion provided on the body (9), and the other end is constructed to eccentrically cooperate with the second brush head (22); when the first transmission member (31) is driven by an external vibration source, it drives one end of the second transmission member (32) to swing, and the second transmission member (32) uses the connecting member (4) as a fulcrum, so that the other end drives the second brush head (22) to rotate.

2. The brush head according to claim 1, characterized in that One end of the second transmission member (32) is partially restricted in movement by the limiting portion, and the other end thereof swings in the opposite direction with the connecting member (4) as a fulcrum, thereby driving the second brush head (22) to rotate.

3. The brush head according to claim 1, characterized in that A groove (41) is provided at the end of one end of the first transmission member (31), and a matching portion (42) is provided on the second transmission member (32), wherein the matching portion (42) is configured to match the groove (41) to form the connecting member (4).

4. The brush head according to claim 3, characterized in that When driven by the external vibration source, the first transmission member (31) rotates back and forth with the first axis as the rotation center, and drives one end of the second transmission member (32) to swing back and forth; When one end of the second transmission member (32) swings back and forth, the other end thereof swings back and forth in the opposite direction with the connecting member (4) as a fulcrum, thereby driving the second brush head (22) to rotate back and forth.

5. The brush head according to claim 4, characterized in that The limiting portion has a limiting area (5), one end of the second transmission member (32) has a limiting segment (321), and the limiting area (5) is configured to cooperate with the limiting segment (321).

6. The brush head according to claim 5, characterized in that The limiting area (5) limits the movement of the limiting section (321), causing the other end of the second transmission member (32) to be relatively displaced relative to the connecting member (4) along the extension direction of the first axis.

7. The brush head according to claim 4, characterized in that Along the extension direction of the first axis, the connecting member (4) is located between the other end of the second transmission member (32) and the limiting portion.

8. The brush head according to claim 1, characterized in that Along the extension direction of the first axis, the connecting member (4) is located between one end and the other end of the second transmission member (32).

9. The brush head according to claim 1, characterized in that The cleaning portion (2) further comprises an assembly part (23), the first brush head (21) and the second brush head (22) are both arranged on the assembly part (23), and the assembly part (23) is attached to one end of the brush head body (1).

10. The brush head according to claim 9, characterized in that The second brush head (22) has a first side surface and a second side surface that are opposite to each other, and brush filaments (221) extend from the first side surface; The second side surface is formed with a pivoting member (222), and the pivoting member (222) is pivotally engaged with the assembly member (23).

11. The brush head according to claim 10, characterized in that The other end of the second transmission member (32) is formed with a driving member (6) that eccentrically cooperates with the second brush head (22), and a coupling member (7) is formed corresponding to a position of the second side surface that deviates from the side center. The driving member (6) cooperates with the coupling member (7). When one end of the second transmission member (32) swings, the second transmission member (32) uses the connecting member (4) as a fulcrum, so that the driving member (6) drives the second brush head (22) to rotate.

12. The brush head according to claim 11, characterized in that The driving member (6) is an open groove member, the engaging member (7) is a cylindrical member, and the diameter of the open groove member is greater than the diameter of the cylindrical member.

13. The brush head according to claim 9, characterized in that The first transmission member (31) is connected to the brush head body (1) along the extension direction of the first axis. When the external vibration source drives the first transmission member (31), the first transmission member (31) drives the brush head body (1) to drive the first brush head (21) and the second brush head (22) to vibrate back and forth.

14. The brush head according to claim 13, characterized in that A limiting groove (231) is provided in the assembly part (23), one end of the second transmission part (32) is connected to the first transmission part (31), and the other end is accommodated in the limiting groove (231). When the external vibration source drives the first transmission part (31), the first transmission part (31) drives one end of the second transmission part (32) to swing back and forth, and the other end of the second transmission part (32) swings back and forth in the opposite direction, driving the second brush head (22) to rotate back and forth.

15. An electric toothbrush, characterized in that: include: a body (9), the body (9) being configured to be held; A power shaft (8), the power shaft (8) being mounted on the fuselage (9); According to any one of claims 1 to 14, the brush head is configured to be connected to the body (9) via the power shaft (8), the power shaft (8) is configured as an external vibration source of the brush head, and the cleaning portion (2) of the brush head is configured to vibrate relative to the body (9).

16. An electric toothbrush according to claim 15, characterized in that: The limiting portion is a limiting area (5) provided on the fuselage (9), and the limiting area (5) is configured to extend along the circumferential direction of the fuselage (9); the limiting section (321) of the second transmission member (32) is configured to extend into the limiting area (5).

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