Toothbrush head, toothbrush comprising same, and cleaning method

Abstract

Disclosed are a toothbrush head (10), a toothbrush comprising same, and a cleaning method. The toothbrush head (10) comprises a brush head body (1) and bristles (2). The brush head body (1) has a cleaning surface (11). The bristles (2) are disposed on the cleaning surface (11). The cleaning surface (11) comprises at least two relatively movable bristle-bearing portions (12). The bristles (2) are connected to the bristle-bearing portions (12). The toothbrush head (10) further comprises a driving mechanism (13). The driving mechanism (13) is in transmission connection with the bristle-bearing portions (12) and is used for driving the bristles (2) to reciprocate. The projections of the reciprocating directions of the bristles (2) of the at least two bristle-bearing portions (12) on the cleaning surface (11) are non-parallel. By means of making the bristles (2) reciprocate in different directions, enhanced cleaning can be performed on a single-sided surface of an object to be cleaned, and multiple angled surfaces of the object to be cleaned may also be cleaned. Moreover, by means of reciprocating movement in different directions, the spacing between free ends (21) of the bristles (2) can be changed, and the bristles can conform to objects to be cleaned with different shapes and sizes, thereby improving the cleaning capability for complex surfaces.

Description

Toothbrush head and toothbrush containing it and cleaning method

[0001] This application claims priority to Chinese Patent Application No. 2025103501876, filed on March 24, 2025, entitled "Toothbrush Head and Toothbrush Containing the Same and Cleaning Method", and Chinese Patent Application No. 2025205207789, filed on March 24, 2025, entitled "Toothbrush Head and Toothbrush Containing the Same", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of oral hygiene, and in particular to a toothbrush head, a toothbrush containing the same, and a cleaning method thereof. Background Technology

[0003] Currently, traditional toothbrushes, including electric toothbrushes, generally suffer from a limited range of brushing motion patterns. Specifically, the bristles of existing toothbrushes are typically fixed to the brush head surface, and their cleaning action primarily relies on the reciprocating motion of the entire brush head surface in a single direction (such as a straight line or rotation), or on high-frequency vibrations generated by a motor driving the bristle bundles. This single motion pattern struggles to effectively adapt to the cleaning needs of objects with complex and uneven surfaces (such as dental fissures, interdental spaces, gum lines, and orthodontic appliances, crowns, and other restorations) that require adjustment. For example, areas such as the proximal contact areas of teeth, the edges of orthodontic brackets, and the gaps between brackets and archwires cannot be effectively cleaned due to the bristles' inability to flexibly adjust their contact angle, resulting in blind spots and impaired cleaning effectiveness.

[0004] To address this issue, users often need to manually adjust the direction and angle of their toothbrush, repeatedly changing brushing techniques to cover different surfaces. However, this method not only increases the complexity of use but also makes it difficult to ensure proper and comprehensive cleaning. This is especially problematic for users wearing orthodontic appliances, whose surfaces contain irregular structures such as brackets, ligatures, and archwires. The fixed brushing motion of traditional bristles cannot adequately conform to these complex surfaces, leading to food debris and plaque buildup, and causing oral health problems such as cavities and gingivitis. Summary of the Invention

[0005] The technical problem to be solved by this application is to overcome the shortcomings of existing toothbrushes in terms of poor cleaning ability on complex surfaces, and to provide a toothbrush head, a toothbrush containing the same, and a cleaning method.

[0006] This application solves the above-mentioned technical problems through the following technical solution:

[0007] A toothbrush head includes a brush head body and bristles. The brush head body has a cleaning surface, and the bristles are disposed on the cleaning surface. The cleaning surface includes at least two relatively movable bristle support portions, and the bristles are respectively connected to each of the bristle support portions. The toothbrush head also includes a drive mechanism, which is tractively connected to each of the bristle support portions and is used to drive the bristles to reciprocate. The reciprocating movement directions of the bristles in at least two of the bristle support portions are not parallel to the projections on the cleaning surface.

[0008] This toothbrush head has bristles on a movable bristle carrier on the cleaning surface, and a drive mechanism is connected to each bristle carrier to drive the bristles to move back and forth, changing the position of the free ends of these bristles, so that the free ends of the bristles come into contact with different parts of the object to be cleaned (such as teeth), thus better simulating the Bass brushing technique.

[0009] Specifically, the reciprocating movement directions of the bristles on at least two bristle carriers are non-parallel projected onto the cleaning surface, allowing these bristles to reciprocate in different directions. This intensifies the cleaning of a single side of the object to be cleaned and further enables the cleaning of multiple angled surfaces of the object. Simultaneously, the reciprocating movement of each bristle in different directions allows the spacing between the free ends of these bristles to change, enabling them to conform to objects of different shapes and sizes, thus improving the cleaning ability for complex surfaces.

[0010] This structural design is not only suitable for normal tooth surfaces, but especially for orthodontic appliances located on tooth surfaces. By moving the free ends of these bristles back and forth in different directions, they can fit into the peripheral surfaces of orthodontic appliances of different shapes and sizes, thus improving the cleaning ability of the orthodontic appliances.

[0011] Preferably, the number of the bristle carriers is at least three.

[0012] This structural design allows more bristles to move back and forth in different directions, simulating a grasping motion through the free ends of the bristles. This increases the number of surfaces that the bristles can clean, thus enhancing cleaning power.

[0013] Preferably, the reciprocating movement directions of the bristles of at least three of the bristle carriers converge at a point on the projection of the bristles onto the cleaning surface.

[0014] This structural design allows the reciprocating movement directions of at least three bristle carriers to converge at a single point on the cleaning surface. When using this toothbrush head, by placing the object to be cleaned at the convergence point, the bristles on these bristle carriers can more effectively clean different surfaces of the object.

[0015] Preferably, the angle between the reciprocating movement direction of the bristles of the adjacent bristle carrier and the projection of the bristles onto the cleaning surface is in the range of 15° to 120°.

[0016] In this structural design, the included angle of the bristles should not be too large to avoid the bristles being too sparsely distributed. At the same time, the included angle of the bristles should not be too small, resulting in the bristles being too densely distributed, which would affect the drive mechanism's ability to move these bristles back and forth in different directions.

[0017] Preferably, the angle between the reciprocating movement directions of adjacent bristle carriers and their projections onto the cleaning surface is the same.

[0018] Preferably, the bristles are arranged at an angle relative to the surface of the bristle carrier.

[0019] By tilting the bristles relative to the surface of the bristle-bearing part, the Bass brushing technique can be better simulated. Specifically, when cleaning the gum line, the tilted bristles are more effective at removing food debris and plaque from the gingival sulcus. When cleaning the interproximal surfaces of teeth, the grasping motion of the tilted bristles helps to pick up food debris that is difficult to clean between adjacent teeth, thus cleaning the interproximal surfaces. When cleaning the uneven and concave occlusal surfaces, the tilted bristles also simulate a grasping motion, achieving a better cleaning effect on these surfaces.

[0020] Preferably, the tilting direction of the bristles is at an angle to the projection of the reciprocating movement direction of the bristles onto the cleaning surface.

[0021] Preferably, the bristles of each of the bristle carriers have the same tilt angle.

[0022] Preferably, the angle between the tilting direction of the bristles of each bristle carrier and the projection of the reciprocating movement direction of the bristles onto the cleaning surface is the same.

[0023] Preferably, the drive mechanism is also used to drive each of the bristle carriers to rotate about an axis perpendicular to the cleaning surface.

[0024] By rotating each bristle carrier, the bristles on each bristle carrier rotate, allowing the bristles to rotate on top of their reciprocating motion. Through the combination of these two motions, the bristles can move in multiple dimensions, simulating a grasping action through their free ends. This allows the movement paths of the free ends of the bristles to overlap, resulting in better adhesion and cleaning ability to different surfaces of the object being cleaned.

[0025] Preferably, the projections of the reciprocating movement directions of at least two of the bristle carriers onto the cleaning surface converge at a first intersection point;

[0026] The drive mechanism drives each of the bristle carriers to rotate around an axis perpendicular to the cleaning surface and passing through the first intersection point.

[0027] Preferably, the rotational motion is a reciprocating rotational motion, and the reciprocating rotation angle range of the reciprocating rotational motion is less than 90°.

[0028] Preferably, the reciprocating movement directions of the bristles of at least two of the bristle carriers are not parallel to the projections on the cleaning surface, so that each bristle contacts a different surface of the object to be cleaned during the reciprocating movement.

[0029] Preferably, the reciprocating movement of the bristles is a translational motion.

[0030] Preferably, the reciprocating movement of the bristles is a flipping motion.

[0031] Preferably, the drive mechanism drives each of the bristle carriers to perform translational motion to drive the bristles to reciprocate.

[0032] Preferably, the drive mechanism drives each of the bristle carriers to rotate in a flipping motion to move the bristles back and forth.

[0033] Preferably, the brush head body further includes an outer frame, and each of the bristle carrying parts is movably connected to the outer frame. The driving mechanism drives each of the bristle carrying parts to rotate around the movable connection point to drive the bristles to move back and forth.

[0034] Preferably, the brush head body further includes an elastic membrane, the peripheral edge of which is connected to the outer frame, and each of the bristle carriers is disposed on the surface of the elastic membrane to be movably connected to the outer frame through the elastic membrane. The driving mechanism drives the elastic membrane to cause each of the bristle carriers to rotate around the movable connection point.

[0035] Preferably, the driving mechanism includes a first driving member capable of reciprocating relative to the outer frame. The first driving member contacts the side of each bristle carrier that is relatively far from the active connection point and drives each bristle carrier to rotate around the active connection point.

[0036] Preferably, the brush head body further includes a base for connecting to the toothbrush handle, the first drive member passing through the base and performing reciprocating movement and rotational movement centered on the reciprocating movement direction relative to the base;

[0037] The first driving member is inserted into and positioned on the outer frame. The first driving member is movable relative to the outer frame along the reciprocating movement direction of the first driving member, and drives the outer frame to move synchronously along the rotational movement direction of the first driving member.

[0038] Preferably, the driving mechanism further includes a second driving member and a transmission member, the second driving member and the transmission member being disposed within the base, the second driving member being connected to an external power source and reciprocating under the drive of the external power source, the second driving member being connected to the first driving member via the transmission member, the transmission member being used to convert the reciprocating movement of the second driving member into the reciprocating movement and rotational motion of the first driving member.

[0039] A toothbrush head includes a brush head body and bristles, the brush head body having a cleaning surface, the bristles being disposed on the cleaning surface, characterized in that the cleaning surface includes at least one relatively movable bristle support portion, the bristles being connected to the bristle support portion, the toothbrush head further including a drive mechanism, the drive mechanism being tractively connected to each of the bristle support portions and driving the bristles to reciprocate and move back and forth, and driving the bristles to rotate about an axis perpendicular to the cleaning surface.

[0040] This toothbrush head has bristles mounted on a movable bristle carrier on the cleaning surface, and a drive mechanism is connected to the bristle carrier to drive the bristles to reciprocate and rotate around an axis perpendicular to the cleaning surface. This causes the free end position of the bristles to continuously change. Through the combination of reciprocating and rotating motions, the bristles can move in multiple dimensions, allowing the free ends of the bristles to contact different parts of the object to be cleaned (such as teeth), thus improving cleaning ability.

[0041] Specifically, the drive mechanism drives the bristles to reciprocate, so that the free ends of the bristles come into contact with the surface of the object to be cleaned during the reciprocating motion, thereby cleaning the surface. At the same time, the drive mechanism drives the bristles to rotate further, so as to change the orientation of the bristles and the object to be cleaned. This allows the bristles to rotate and move towards other surfaces of the object to be cleaned, thereby cleaning those other surfaces as well through the reciprocating motion of the bristles.

[0042] Preferably, the brush head body further includes a base for connecting to the toothbrush handle, the first drive member positioning the base in the direction of rotation along its own axis, and being able to reciprocate relative to the base in the direction of rotation along its own axis;

[0043] The brush head body also includes a third driver, which is connected to the outer frame and drives the outer frame to rotate.

[0044] The outer frame is connected to the first driving component by a thread, and the rotational movement of the outer frame drives the first driving component to reciprocate.

[0045] A toothbrush head includes a brush head body and bristles. The brush head body has a cleaning surface, and the bristles are disposed on the cleaning surface. The cleaning surface includes at least one relatively movable bristle support portion, and the bristles are connected to the bristle support portion. The toothbrush head also includes a drive mechanism, which is tractively connected to each of the bristle support portions and drives the bristles to reciprocate and rotate about an axis perpendicular to the cleaning surface.

[0046] A toothbrush comprising a toothbrush head as described above.

[0047] A cleaning method comprising using a toothbrush head as described above to clean an object, the cleaning method comprising:

[0048] The cleaning surface of the toothbrush head is oriented toward the object to be cleaned and held there, so that each bristle comes into contact with different surfaces of the object to be cleaned during the reciprocating movement.

[0049] The positive and progressive effects of this application are as follows:

[0050] In this toothbrush head, the toothbrush containing it, and the cleaning method, the bristles are moved back and forth, changing the position of the free ends of these bristles so that the free ends of the bristles come into contact with different parts of the object to be cleaned (such as teeth), thus better simulating the Bass brushing technique.

[0051] By moving the bristles back and forth in different directions, the system can intensify the cleaning of a single side of the object being cleaned, and further clean multiple angled surfaces. Simultaneously, the reciprocating movement of the bristles in different directions allows the spacing between their free ends to change, enabling them to conform to objects of varying shapes and sizes, thus enhancing the cleaning ability for complex surfaces. Attached Figure Description

[0052] Figure 1 is a structural schematic diagram of a toothbrush according to this application.

[0053] Figure 2 is a magnified view of part A in Figure 1.

[0054] Figure 3 is a top view of the first toothbrush head of this application.

[0055] Figure 4 is a schematic diagram of the projection of the reciprocating movement direction of the bristles on the cleaning surface according to this application.

[0056] Figure 5 is a partial sectional view of part B in Figure 3.

[0057] Figure 6 is a schematic diagram of the structure of the first type of brush bristle support and brush bristles in this application.

[0058] Figure 7 is a structural schematic diagram of the first type of driving component in this application.

[0059] Figure 8 is a schematic diagram of the state changes in Figure 5.

[0060] Figure 9 is a structural schematic diagram of a toothbrush head according to this application.

[0061] Figure 10 is a structural schematic diagram of the base and first driving component of a toothbrush head according to this application.

[0062] Figure 11 is a structural schematic diagram of the second type of first driving component of this application.

[0063] Figure 12 is a schematic diagram of the lower frame structure of this application.

[0064] Figure 13 is a schematic diagram of the internal structure of the first toothbrush head of this application.

[0065] Figure 14 is a schematic diagram of the internal structure of the second type of toothbrush head of this application.

[0066] Figure 15 is a structural schematic diagram of the first type of transmission component of this application.

[0067] Figure 16 is a structural schematic diagram of the second type of transmission component of this application.

[0068] Figure 17 is a schematic diagram of the structure of the second type of bristle support and bristles in this application.

[0069] Figure 18 is a schematic diagram of the structure of the third type of bristle support and bristles in this application.

[0070] Figure 19 is a top view of the second type of toothbrush head of this application.

[0071] Figure 20 is a top view of the third type of toothbrush head of this application.

[0072] Figure 21 is a top view of the fourth type of toothbrush head of this application.

[0073] Figure 22 is a schematic diagram of the usage state of the first toothbrush head of this application.

[0074] Figure 23 is a schematic diagram of the usage state of the second type of toothbrush head in this application.

[0075] Figure 24 is a schematic diagram of the first transmission state of a toothbrush head according to this application.

[0076] Figure 25 is a schematic diagram of the second transmission state of a toothbrush head according to this application.

[0077] Wherein, 10-toothbrush head; 101-first intersection point; 1-brush head body; 11-cleaning surface; 12-bristle support; 121-rotating shaft; 13-drive mechanism; 131-first drive component; 1311-groove; 1312-positioning post; 132-second drive component; 1321-slide groove; 133-first transmission component; 1331-post; 1332-second ramp; 134-second transmission component; 1341-first sub-transmission component; 1342-second sub-transmission component; 14-outer frame; 141-upper frame; 142-lower frame; 1421-positioning hole; 15-base; 151-first ramp; 16-elastic membrane; 2-bristles; 21-free end; 20-toothbrush handle. Detailed Implementation

[0078] The present application is further illustrated below by way of embodiments, but these embodiments are not intended to limit the scope of the present application. Experimental methods not specifically described in the following embodiments are performed according to conventional methods and conditions, or as selected in accordance with the product instructions.

[0079] As shown in Figure 1, this application provides a toothbrush, which includes a toothbrush head 10 and a toothbrush handle 20. The toothbrush head 10 is mounted on the toothbrush handle 20 or is integrally formed with the toothbrush handle 20 for use by a user to hold and clean various objects to be cleaned, including teeth. As shown in Figures 1 and 2, the toothbrush head 10 includes a brush head body 1 and bristles 2. The brush head body 1 is the part connected to the toothbrush handle 20 and has a cleaning surface 11. The bristles 2 are disposed on the cleaning surface 11. During use, by facing the cleaning surface 11 toward the object to be cleaned, the free end 21 (i.e., the end relatively away from the cleaning surface 11) of the bristles 2 comes into contact with the object to be cleaned, thereby achieving the cleaning purpose.

[0080] To address the issue of poor cleaning ability of existing toothbrushes on complex surfaces, this application makes the following improvements to the toothbrush head 10: As shown in Figure 2, which is a partial enlarged view of the toothbrush head 10, in this embodiment, the cleaning surface 11 of the brush head body 1 includes six relatively movable bristle support portions 12. The fixed ends of the bristles 2 are respectively connected to the bristle support portions 12. The toothbrush head 10 also includes a drive mechanism 13, which is connected to these bristle support portions 12 and is used to drive each bristle 2 to reciprocate. As shown in Figure 3, six arrows in Figure 3 indicate the reciprocating movement direction of the six groups of bristles 2 projected onto the cleaning surface 11. The reciprocating movement directions of adjacent bristle support portions 12 are different, so that the projections of the reciprocating movement directions of the bristles 2 on the cleaning surface 11 are not parallel.

[0081] The toothbrush head 10 has bristles 2 on the movable bristle support part 12 on the cleaning surface 11, and a drive mechanism 13 is connected to each bristle support part 12 to drive the bristles 2 to reciprocate, change the position of the free end 21 of these bristles 2, and make the free end 21 of the bristles 2 contact different parts of the object to be cleaned (such as teeth), so as to better simulate the Bass brushing method.

[0082] Specifically, by making the projections of the reciprocating movement directions of the bristles 2 on the cleaning surface 11 of at least two bristle carriers 12 non-parallel—for example, in Figure 3, the projections of the reciprocating movement directions of the bristles 2 on each bristle carrier 12 and the bristles 2 on adjacent bristle carriers 12 on the cleaning surface 11—these bristles 2 reciprocate in different directions, thus enhancing the cleaning of one side of the object to be cleaned and further enabling the cleaning of multiple angled surfaces of the object. Simultaneously, through reciprocating movement in different directions, each bristle 2 continuously switches between relative outward expansion and inward retraction states to simulate a grasping action, allowing the spacing of the free ends 21 of these bristles 2 to change and conform to objects of different shapes and sizes to be cleaned. In this process, the multiple angled surfaces of the object to be cleaned can be concave, such as dental pits, gaps between teeth, and the gingival line. As the free ends 21 of each set of bristles 2 expand outwards in different directions, they contact and adhere to these concave surfaces at different angles, achieving the cleaning purpose. Furthermore, during the reciprocating movement of each bristle 2 in different directions, other possible actions can be simulated based on the individual motion control of each bristle 2; these are not limited in this embodiment.

[0083] Furthermore, the multiple angled surfaces of the object to be cleaned can be convex, such as orthodontic appliances on the tooth surface. As the free ends 21 of each set of bristles 2 retract inwards in different directions, they contact and adhere to different surfaces of the object to be cleaned, including the orthodontic appliance. This, combined with the outward expansion and rotational movements of the free ends 21 of each set of bristles 2, enhances the cleaning ability of complex tooth surfaces, such as teeth with orthodontic appliances. Therefore, when this toothbrush head 10 is used to clean orthodontic components in the oral cavity, it can achieve comprehensive cleaning of the surfaces of small oral parts such as orthodontic appliances without the need for manual operation of the toothbrush to perform large, multi-angle movements within the mouth.

[0084] It is important to clarify that the "reciprocating movement direction" refers to the direction represented by the line connecting the two starting positions during the reciprocating movement of the bristles 2, and not the path traversed by the bristles 2 during the reciprocating movement. In other words, although the specific reciprocating movement path and direction of the bristles 2 are consistent in the embodiment shown in Figure 3, this path setting simplifies the structure of the drive mechanism that moves the bristles 2. However, in other embodiments, the bristles can also reciprocate along other tortuous or curved movement paths between the two starting positions, such as moving along an S-shaped or C-shaped path. That is to say, in other embodiments, the specific movement path of the bristles between the two starting positions during the reciprocating movement of the bristles by the drive mechanism can be set according to actual needs, and the specific structural setting scheme for the drive mechanism to move the bristles reciprocating along a relatively tortuous path can also be implemented with reference to conventional drive forms known in the prior art, and will not be elaborated here.

[0085] In some embodiments, as shown in FIG3, there are six bristle carriers 12, which are evenly arranged along the circumferential direction. The angle α between the reciprocating movements of the bristles 2 of two adjacent bristle carriers 12 is 60°. That is, the bristles 2 on each bristle carrier 12 are not parallel to the projection of the reciprocating movement direction of the bristles 2 on the cleaning surface 11 with the projection of the reciprocating movement direction of the bristles 2 on the cleaning surface 11 with the projection of the reciprocating movement direction of the bristles 2 on the cleaning surface 11 of the other four bristle carriers 12. By moving the free ends 21 of multiple sets of bristles 2 in different directions, it can cope with objects with complex surface structures and uneven surfaces to be cleaned. This allows the user to cover different surfaces of the object to be cleaned without having to manually and frequently adjust the orientation and angle of the toothbrush, thereby improving the cleaning ability.

[0086] In other embodiments, the angle α between the reciprocating movements of the bristles 2 of two adjacent bristle carriers 12 can also be other angles, with a preferred angle α ranging from 15° to 120°. Specifically, the angle α between the reciprocating movements of each group of adjacent bristles 2 should not be too large to avoid the bristles 2 being too sparsely distributed. At the same time, the angle α between the reciprocating movements of the bristles 2 should not be too small, resulting in the bristles 2 being too densely distributed, which would affect the drive mechanism 13 from driving these bristles 2 to reciprocate in different directions.

[0087] In some embodiments, as shown in FIG3, the reciprocating movement directions of the bristles 2 of these bristle carriers 12 converge at a point on the projection of the cleaning surface 11, so that when using the toothbrush head 10, by placing the object to be cleaned at the convergence point, the bristles 2 provided on these bristle carriers 12 can more effectively clean different surfaces of the object to be cleaned.

[0088] In some embodiments, as shown in FIG4, where the solid arrows represent the projection of the bristle reciprocating movement direction onto the cleaning surface, when there are six bristle carriers 12 (not shown) evenly arranged circumferentially, the projections of the bristle reciprocating movement direction onto the cleaning surface are all angular and non-parallel. For example, they can reciprocate along an arc from the outside in, and no two arcs are on the same circumference. In some other embodiments, the bristle carriers 12 (not shown) can swing to a certain extent in a direction perpendicular to the reciprocating movement direction during the reciprocating movement. The dashed arrows in FIG4 represent the range of the bristles that can swing in a direction perpendicular to the reciprocating movement direction.

[0089] Of course, in other implementations, the number, position and angle of the bristle carrier 12, as well as the number, position and angle of the bristles 2 on a single bristle carrier 12, can be adjusted according to actual needs. However, at least two bristle carriers 12 that move in different directions must be ensured to drive two sets of bristles 2 to reciprocate in directions that are not parallel when projected onto the cleaning surface 11.

[0090] Regarding the reciprocating movement between the bristles 2, as shown in Figure 5, the reciprocating movement can be achieved by rotating the bristles 2 and the bristle support 12. In the embodiment shown in Figure 5, the bristles 2 achieve reciprocating movement by rotating, and the structure of the drive mechanism 13 can be made relatively simple.

[0091] In some embodiments, a preferred structural arrangement is provided in which the drive mechanism 13 simultaneously drives the bristles 2 on each bristle carrier 12 to reciprocate. As shown in Figures 5 and 6, one end of the bristle carrier 12 has a rotating shaft 121, and the bristle carrier 12 is connected to other parts of the brush head body 1 through the rotating shaft 121, so that the bristle carrier 12 can perform a flipping motion. Specifically, as shown in Figure 5, the brush head body 1 also includes an outer frame 14, and the six bristle carriers 12 are movably connected to the outer frame 14 through the rotating shaft 121. The drive mechanism 13 is located at the center position between each bristle 2 carrier, and drives these bristle carriers 12 to perform a flipping motion around the movable connection point (rotating shaft 121) to drive the bristles 2 to reciprocate.

[0092] Specifically, as shown in Figures 5 and 7, the drive mechanism 13 includes a first drive member 131 capable of reciprocating relative to the outer frame 14 in the vertical direction. The peripheral surface of the first drive member 131 is provided with a V-shaped groove 1311. The first drive member 131 contacts the side of the bristle carrier 12 that is relatively away from the movable connection point (rotation axis 121) through the groove 1311, so as to push the bristle carrier 12 through the upper and lower surfaces of the groove 1311, thereby driving the bristle carrier 12 to perform a flipping motion around the movable connection point (rotation axis 121), so that the bristles 2 can reciprocate in a flipping motion.

[0093] As shown in Figures 5 and 8, with this structural arrangement, the first driving member 131 of the driving mechanism 13 can move back and forth, which can drive all the bristle bearing parts 12 to rotate, so that the bristles 2 can move back and forth in different directions. The driving structure is simple and highly reliable.

[0094] Figure 9 shows a schematic diagram of the toothbrush head structure after the upper frame 141 of the outer frame 14 is hidden. In some embodiments, the outer frame 14 is composed of an upper frame 141 and a lower frame 142, which are manufactured as relatively separate parts. The bristle carrier 12 is movably connected to the outer frame 14 by clamping the rotation shaft 121 of the bristle carrier 12 between the upper frame 141 and the lower frame 142. The upper frame 141 and the lower frame 142 can be combined by adhesive bonding or other connection methods such as snap-fit.

[0095] As shown in Figure 3, in some embodiments, to further enhance the cleaning ability of the toothbrush head 10, the drive mechanism 13 is also used to drive the cleaning surface 11 and each bristle support 12 to rotate around an axis perpendicular to the cleaning surface 11. By causing each bristle support 12 to rotate as a whole, the bristles 2 on each bristle support 12 are driven to rotate, so that the bristles 2 rotate on the basis of reciprocating movement. Through the combination of these two movements, the bristles 2 can move in multiple dimensions, so that the free ends 21 of the bristles 2 can simulate grasping action. During the continuous switching between outward expansion and inward retraction states, the movement paths of the free ends 21 of each bristle 2 can overlap, so that the free ends 21 of the bristles 2 have better adhesion to different surfaces of the object to be cleaned, and the cleaning ability is better.

[0096] The rotational movements of each bristle carrier 12 can be synchronous, meaning they rotate at the same center of rotation, in the same direction, and at the same speed; or they can be asynchronous, meaning each bristle carrier 12 and the bristles 2 mounted on it rotate at different centers of rotation, in different directions, or at different speeds. The specific scheme for driving the rotation of each bristle carrier 12 and the bristles 2 mounted on it can be configured as needed based on actual conditions.

[0097] In this embodiment, the reciprocating movement directions of the bristles 2 of each bristle carrier 12 converge on the first intersection point 101 located at the center of the cleaning surface 11. The driving mechanism 13 drives the cleaning surface 11 of the bristle carrier 12 to rotate around the axis perpendicular to the cleaning surface 11 and centered on the first intersection point 101, so that the reciprocating movement direction and the rotation direction of each bristle 2 are synchronized, thereby improving the cleaning ability.

[0098] In some examples, the drive mechanism 13 drives the cleaning surface 11, including each bristle carrier 12, to perform a continuous, unidirectional rotational motion. In other examples, the drive mechanism 13 drives the cleaning surface 11, including each bristle carrier 12, to perform a reciprocating rotational motion. When driving the cleaning surface 11 to perform a reciprocating rotational motion, it is preferable that the reciprocating rotation angle is less than 90° to avoid large-scale rotation, and a more preferred reciprocating rotation angle is 30°.

[0099] Specifically, in addition to driving the bristles 2 of each bristle carrier 12 to reciprocate in different directions, the drive mechanism 13 further drives the bristles 2 of each bristle carrier 12 to rotate as a whole. The drive mechanism 13 can employ various structures to achieve the above-mentioned driving functions. For example, the drive mechanism 13 can be equipped with two drive modules, one for simultaneously driving the bristles 2 to reciprocate in different directions, and the other for driving the bristles 2 to rotate as a whole. Alternatively, the drive mechanism 13 can also be equipped with a single drive module, simultaneously achieving both reciprocating movement and rotation of the bristles 2 in different directions through a linkage mechanism. The specific drive scheme can be selected according to actual needs.

[0100] In this embodiment, in order to simplify the drive structure and enable the drive mechanism 13 to achieve both the reciprocating movement of the bristles 2 in different directions and the rotational movement of the bristles 2 by setting only one drive module, a more preferred transmission structure setting scheme for the drive mechanism 13 is further provided: as shown in Figure 10, the brush head body 1 also includes a base 15, which is used to connect to the toothbrush handle. The end of the first drive member 131 extends from the base 15 and simultaneously performs reciprocating movement and rotational movement centered on the reciprocating movement direction relative to the base 15.

[0101] As shown in Figures 11 and 12, the positioning post 1312 of the first driving member 131 passes through the lower frame 142 of the outer frame 14 and is positioned in the positioning hole 1421 of the lower frame 142, so that the first driving member 131 is movable relative to the outer frame 14 along the reciprocating movement direction of the first driving member 131. Under the positioning structure of the positioning hole 1421, the first driving member 131 and the lower frame 142 of the outer frame 14 can rotate synchronously, so that the rotation of the first driving member 131 drives the outer frame 14, each bristle bearing part 12 and the bristles 2 on each bristle bearing part 12 to move synchronously along the rotational movement direction of the first driving member 131. Therefore, through this structural arrangement, the reciprocating and rotational movements of the first driving member 131 can be transmitted to different objects respectively. The rotational movement of the first driving member 131 is ultimately transmitted to each group of bristles 2 through the outer frame 14 and each bristle bearing part 12, so that the bristles 2 can rotate relative to each other. The reciprocating movement of the first driving member 131 is ultimately transmitted to each group of bristles 2 through each bristle bearing part 12, so that the bristles 2 can flip relative to each other, so that each group of bristles 2 can reciprocate in different directions.

[0102] In order to enable the first driving member 131 extending from the base 15 to perform reciprocating and rotating motions simultaneously, a driving scheme existing in the prior art can be adopted. For example, two relatively independent power sources can be set up, one power source is connected to the first driving member 131 and drives the first driving member 131 to perform reciprocating motion, and the other power source is connected to the first driving member 131 and drives the first driving member 131 to perform rotating motion.

[0103] In this embodiment, to further simplify the internal structure of the toothbrush head 10, a solution is provided that allows the first driving member 131 to simultaneously perform reciprocating and rotational movements using a single power source. Specifically, as shown in Figure 5, the driving mechanism 13 further includes a second driving member 132 and a first transmission member 133. Both the second driving member 132 and the first transmission member 133 are disposed within the base 15. The second driving member 132 is connected to a power source located within the toothbrush handle and reciprocates under the drive of an external power source. The second driving member 132 is connected to the first driving member 131 via the first transmission member 133, which converts the reciprocating movement of the second driving member 132 into both reciprocating and rotational movements of the first driving member 131. By setting the first transmission member 133 to convert the unidirectional movement of the power source outside the toothbrush head 10 (within the toothbrush handle) into the bidirectional movement of the first driving member 131, only a single unidirectional power source is needed to meet the driving requirements, effectively simplifying the overall structural complexity of the toothbrush.

[0104] The specific structural configuration of the first transmission component 133 can refer to existing linkage schemes in the prior art, converting unidirectional motion into bidirectional motion through the transmission of a linkage mechanism or a slanting push mechanism. Specifically, in this embodiment, the preferred structural configuration of the first transmission component 133 is as follows:

[0105] As shown in Figure 13, after partially concealing the housing of the base 15, it can be seen that the end of the second drive member 132 has a groove 1321. The groove 1321 is connected to the column 1331 on the surface of the first transmission member 133. The reciprocating movement of the second drive member 132 drives the first transmission member 133 to rotate, thereby driving the first drive member 131 to rotate.

[0106] Meanwhile, as shown in Figure 14, after concealing the second driving member 132 and the first transmission member 133, it can be seen that two first ramps 151 are provided on the surface of the base 15. As shown in Figure 15, two matching second ramps 1332 are provided on the surface of the first transmission member 133. During the rotation of the first transmission member 133, the first transmission member 133 can reciprocate through the cooperation of the second ramps 1332 and the first ramps 151.

[0107] Of course, the above-described structural configuration of the drive mechanism 13 is only a preferred and relatively simple drive scheme. In other embodiments, other drive methods can be used to drive the bristle carrier 12 and the bristles 2 to perform flipping or translational movements, or other drive methods can be used to drive the outer frame 14, the bristle carrier 12, and the bristles 2 as a whole to perform rotational movements.

[0108] For example, in other embodiments, the drive mechanism 13 may also be provided with a third drive member different from the second drive member, which drives each bristle carrier 12 and bristle 2 to perform flipping motion, linear motion, and reciprocating rotational motion through other transmission schemes. Specifically, the third drive member of the drive mechanism 13 (not shown in the figure) can be connected to the outer frame 14 to drive the outer frame 14, the bristle carrier 12, and the bristle 2 to rotate as a whole (specifically, to reciprocate). The first drive member 131 is positioned on the base 15, so that the first drive member 131 can reciprocate relative to the base 15 in the vertical direction (i.e., the axial direction of the first drive member 131) but cannot rotate. Meanwhile, the first driving member 131 is connected to the outer frame 14 via a threaded structure. During the small reciprocating rotation of the outer frame 14 driven by the third driving member, the thread between the first driving member 131 and the outer frame 14 drives the first driving member 131 to reciprocate vertically. This, in turn, drives the bristle carrier 12 through the V-shaped groove 1311 on the peripheral surface of the first driving member 131, causing each bristle carrier 12 and the bristles 2 to rotate, thus achieving reciprocating movement in different directions. This driving scheme utilizes the threaded connection between the first driving member 131 and the outer frame 14 for transmission. The outer frame 14 reciprocates under the drive of the third driving member of the driving mechanism 13, causing the bristles to rotate reciprocally. Meanwhile, the first driving member 131, through its threaded connection, achieves vertical lifting and lowering under the reciprocating rotation of the outer frame 14, causing the bristles to rotate. This driving scheme has a simpler structure and higher operational reliability.

[0109] In some embodiments, as shown in FIG16, in order to enable the bristles 2 and the bristle support portion 12 to reciprocate through translational movement, the drive mechanism 13 may further include a fourth drive member (not shown in the figure) different from the first drive member. The reciprocating movement of the bristle support portion 12 is achieved by the fourth drive member and other transmission members different from the first transmission member 133, thereby driving the bristles 2 connected to the bristle support portion 12 to reciprocate. Specifically, the fourth drive member may be disposed inside the base 15. The fourth drive member is connected to each bristle support portion 12 through a transmission member to drive the bristle support portion 12 and the bristles 2 to rotate simultaneously (specifically, to reciprocate). In this embodiment, the second transmission member 134 different from the first transmission member 133 may include a first sub-transmission member 1341 that can rotate synchronously with the cleaning surface 1 under the drive of the fourth drive member, and a plurality of second sub-transmission members 1342 that have a transmission connection relationship with the first sub-transmission member 1341. One end of the second sub-transmission member 1342 is movably connected to the first sub-transmission member 1341 (e.g., through a pin-shaft rotational connection or a slider sliding connection in a groove), and the other end of the second sub-transmission member 1342 is movably connected to a bristle carrier 12. When the fourth driving member drives the first sub-transmission member 1341 to rotate, the first sub-transmission member 1341 drives the bristle carrier 12 to move outward or inward through the second sub-transmission member 1342, thereby realizing the reciprocating movement of the bristle carrier 12 and the bristles 2.

[0110] In some other embodiments, the second transmission member 134 may include only the first sub-transmission member 1342, wherein the first sub-transmission member 1342 is movably connected to the slider (not shown in the figure) provided on the bristle carrier 12 through a slide groove (not shown in the figure) provided along the rotation direction. Under the drive of the fourth driving member (not shown in the figure), the first sub-transmission member 1342 can rotate synchronously with the cleaning surface 1, thereby driving the bristle carrier 12 to move outward or inward, realizing the reciprocating movement of the bristle carrier 12 and the bristles 2.

[0111] Specifically, the way in which the fourth driving member drives the first sub-transmission member 1341 to rotate can be based on various methods such as gear transmission, belt transmission, and linkage transmission, and is not limited in the embodiments of this application.

[0112] In some embodiments, the fourth driving member can be used as a power source to realize the reciprocating movement (specifically, the reciprocating rotational movement) of the bristles 2 and the bristle support 12; in other embodiments, the fourth driving member can also be used as a power source to realize the reciprocating movement of the bristles 2 and the bristle support 12, while another power source is connected to the fourth driving member or the entire assembly of the fourth driving member, the bristles support 12, and the bristles 2, so as to drive the entire assembly of the bristles 2 and the bristle support 12 to rotate.

[0113] As shown in Figure 17, in some embodiments, the bristles 2 are not perpendicular to the surface of the bristle support 12, but are inclined. By tilting the bristles 2 relative to the surface of the bristle support 12, the Bass brushing technique can be better simulated. Specifically, when cleaning the gingival margin, the inclined bristles 2 are more helpful for ordinary people to clean food debris or plaque in the gingival sulcus. When cleaning the proximal surfaces of teeth, the gripping action of the inclined bristles 2 helps to pick up food debris that is difficult to clean between adjacent teeth, thereby cleaning the proximal surfaces. When cleaning uneven and concave occlusal surfaces, the gripping action of the inclined bristles 2 can achieve a better cleaning effect on uneven and concave surfaces.

[0114] As shown in Figure 17, the tilt angle of the bristles 2 relative to the bristle support portion 12 is β. In this embodiment, the tilt angle β is 60°. Of course, this angle setting scheme is only a preferred setting scheme of this application. In other embodiments, other tilt angles can be selected according to actual needs.

[0115] As shown in Figure 18, in some embodiments, the tilting direction of the bristles 2 is different from the reciprocating direction of the bristles 2. By tilting the bristles 2 in a direction different from the reciprocating direction, the cleaning range of the free end 21 of the bristles 2 can be expanded, further improving the cleaning ability. In addition, in this embodiment, the tilting direction of each group of bristles 2 relative to the bristle support 12 is the same, and the angle between the tilting direction of each group of bristles 2 and the reciprocating direction is also the same.

[0116] As shown in Figures 2 and 3, in some embodiments, there are six bristle carriers 12, evenly arranged along the circumferential direction. The angle between the reciprocating movements of the bristles 2 of two adjacent bristle carriers 12 is 60°. That is, the bristles 2 on each bristle carrier 12 are not parallel to the projection of the reciprocating movement direction of the bristles 2 on the cleaning surface 11 with the opposite side of the bristle carrier 12, but are at an angle and not parallel to the projection of the reciprocating movement direction of the bristles 2 on the cleaning surface 11 with the remaining four bristle carriers 12. By moving the free ends 21 of multiple sets of bristles 2 in different directions, it can handle objects with complex and uneven surface structures, allowing users to cover different surfaces of the object to be cleaned without frequently adjusting the orientation and angle of the toothbrush manually, thus improving cleaning ability. However, this structural arrangement is only one of the more preferred arrangements in this application. The number and arrangement of the bristle carriers 12, as well as the angle between the reciprocating movements of the bristles 2 of each bristle carrier 12, can be set as needed according to actual conditions.

[0117] Furthermore, in this embodiment, only the reciprocating bristle 2 structure provided on the toothbrush head 10 is described. In other feasible examples, in addition to the reciprocating bristles 2, other bristles 2 at fixed positions can be further provided, so that the fixed bristles 2 cooperate with the reciprocating bristles 2 to further improve the cleaning ability of the toothbrush.

[0118] This application also provides a cleaning method, which uses a toothbrush including the toothbrush head 10 in any of the above embodiments to clean the object to be cleaned. The cleaning method includes the following steps:

[0119] During the cleaning process, by holding the toothbrush handle 20, the cleaning surface 11 of the toothbrush head 10 is directed toward the object to be cleaned (teeth, orthodontic appliances, etc.) and held there, so that the bristles 2 on the cleaning surface 11 come into contact with different surfaces of the object to be cleaned during the reciprocating movement, thereby achieving the cleaning purpose.

[0120] Building upon the aforementioned cleaning method, while the toothbrush head 10 remains on the object to be cleaned, the toothbrush handle 20 can be rotated within a small angle relative to the object by wrist manipulation. This causes the bristles 2 on the cleaning surface 11 to rotate further during reciprocating motion, resulting in better contact between the bristles 2 and different surfaces of the object being cleaned during continuous movement, thus improving the cleaning effect. Since the bristles 2 on the toothbrush head 10 reciprocate in different directions via the drive mechanism 13, the angle at which the toothbrush handle 20 is rotated by wrist manipulation does not need to be excessive to achieve the cleaning purpose. Preferably, the rotation angle should be controlled within 30° to reduce the difficulty of use.

[0121] In some other embodiments, this application also provides a toothbrush head 10 and a toothbrush including the same, the main difference in structure from the aforementioned embodiments being: as shown in FIG19, in this embodiment, the number of bristle carriers 12 can be three, each bristle carrier 12 is provided with a set of bristles 2, the three bristle carriers 12 are also evenly arranged along the circumferential direction and move back and forth toward the center position, the included angle between the moving directions of adjacent bristles 2 is the same, which is 120°. By reducing the number of bristle carriers 12, the structural complexity of the toothbrush head 10 is simplified, and the three sets of bristles 2 move back and forth at an included angle of 120°, which can effectively handle the contact and cleaning of complex surfaces.

[0122] In some examples, the number of bristle carriers 12 may also be four, and the four bristle carriers 12 and the bristles 2 disposed on them are also evenly arranged in the circumferential direction and move back and forth toward the center position.

[0123] In this embodiment, the use of three or four sets of bristles 2 moving back and forth in different directions can achieve a balance between structural complexity (product cost) and cleaning efficiency (product efficacy).

[0124] In some other embodiments, this application also provides a toothbrush head 10 and a toothbrush including the same, the main difference in structure from the aforementioned embodiments being: as shown in FIG20, in this embodiment, the three bristle carriers 12 are also arranged along the circumferential direction, but are not evenly distributed circumferentially as in other embodiments, but are concentrated on one side of the cleaning surface 11. The included angle α of the reciprocating movement of the bristles 2 on each pair of adjacent bristle carriers 12 is the same, which is 60°. By arranging the three bristle carriers 12 relatively close together, the three sets of bristles 2 can concentrate on cleaning the surface of the object to be cleaned within an area of ​​approximately 180°.

[0125] Based on the reciprocating movement of the three sets of bristles 2 in different directions, these bristles 2 are further rotated around the center position of the cleaning surface 11, so that the three sets of bristles 2 can concentrate on cleaning the remaining 180° range of the surface of the object to be cleaned C. Specifically, the drive structure that makes each set of bristles 2 rotate as a whole can adopt the rotation drive scheme existing in the prior art, or refer to the rotation drive scheme provided in other embodiments.

[0126] In some examples, the angle α of the reciprocating movement of the bristles 2 on two adjacent bristle carriers 12 is the same. For example, the angle α of the reciprocating movement of the bristles 2 on two adjacent bristle carriers 12 is 40°, while the angle α of the reciprocating movement of the bristles 2 on two other adjacent bristle carriers 12 is 80°. The specific angle layout scheme can be set according to actual needs.

[0127] In some other embodiments, this application also provides a toothbrush head 10 and a toothbrush containing the same, the main difference of which is that, as shown in FIG21, in this embodiment, there are only two bristle carriers 12, so that the two sets of bristles 2 can move back and forth in different directions to achieve the purpose of adhering to and cleaning different surfaces of the object to be cleaned D.

[0128] Based on the reciprocating movement of the two sets of bristles 2 in different directions, these bristles 2 are further rotated around the center of the cleaning surface 11, allowing the two sets of bristles 2 to adhere to and clean the remaining surface of the object to be cleaned D. In other words, even with a relatively small number of relatively moving bristles 2, by driving these bristles 2 to rotate as a whole to change their orientation relative to the object to be cleaned D, the free ends of these bristles 2 can better simulate a grasping action, increasing the amount of surface area of ​​the object to be cleaned that these bristles 2 can clean, thereby improving cleaning ability.

[0129] Specifically, the driving structure that enables each group of bristles 2 to rotate as a whole can adopt a rotation driving scheme existing in the prior art, or refer to the rotation driving scheme provided in other embodiments.

[0130] In some other embodiments, this application also provides a toothbrush head 10 and a toothbrush containing the same, the main difference of which is that, as shown in FIG22, in this embodiment, the number of bristle carriers 12 is only one, and the driving mechanism 13 drives the bristles 2 to reciprocate in the direction indicated by the arrow in FIG22, so as to achieve the purpose of adhering and cleaning the object to be cleaned E to one of the surfaces.

[0131] As shown in Figure 23, in this embodiment, the drive mechanism 13 further drives the bristles 2 to rotate in the direction indicated by the dotted arrow in Figure 23, thereby changing the orientation between the bristles 2 and the object to be cleaned E. This allows the bristles 2 to rotate towards other surfaces of the object to be cleaned E, further cleaning these other surfaces through the reciprocating movement of the bristles 2. By continuously rotating the bristles 2, the entire circumferential surface of the object to be cleaned E can be thoroughly cleaned, while the toothbrush remains only inside the mouth during this process.

[0132] In some other embodiments, this application also provides a toothbrush head 10 and a toothbrush containing the same, the structure of which differs from the aforementioned embodiments mainly in that: based on the first drive member 131 that can reciprocate, this embodiment provides another transmission scheme that enables each bristle bearing part 12 to rotate relative to the movable connection point of the outer frame 14.

[0133] As shown in Figures 24 and 25, the brush head body 1 further includes an elastic membrane 16, the peripheral edge of which is connected to the outer frame 14. Specifically, the connection can be achieved by the upper frame 141 and the lower frame 142 of the outer frame 14 clamping the elastic membrane 16 together.

[0134] Each bristle support portion 12 (only two bristle support portions 12 are shown in Figures 24 and 25 for ease of illustration) is respectively disposed on the outer surface of the elastic membrane 16, so as to be indirectly and movably connected to the outer frame 14 through the elastic membrane 16. The end of the first driving member 131 of the driving mechanism 13 is connected to the inner surface of the elastic membrane 16. By pushing the elastic membrane 16 upward, the elastic membrane 16 deforms as a whole, causing the bristle support portion 12 and the bristles 2 to perform an outward flipping motion. When the first driving member 131 retracts downward, it pulls the elastic membrane 16 downward, causing the bristle support portion 12 and the bristles 2 to perform an inward flipping motion, thereby realizing the reciprocating movement of the bristles 2.

[0135] This structural approach utilizes the elastic deformation of the elastic membrane 16 to achieve movement, with relatively low requirements for structural precision. Furthermore, the elastic membrane 16 can cover the entire cleaning surface 11 inside the outer frame 14, thus isolating the drive mechanism 13 (first drive member 131) located inside the elastic membrane 16 from the outside world, reducing the difficulty of cleaning the toothbrush.

[0136] While specific embodiments of this application have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this application is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this application, but all such changes and modifications fall within the scope of protection of this application.

Claims

1. A toothbrush head comprising a brush head body and bristles, the brush head body having a cleaning surface, the bristles being disposed on the cleaning surface, characterized in that, The cleaning surface includes at least two relatively movable bristle support portions, with the bristles respectively connected to each of the bristle support portions. The toothbrush head also includes a drive mechanism, which is tractively connected to each of the bristle support portions and is used to drive the bristles to reciprocate. The reciprocating directions of the bristles in at least two of the bristle support portions are not parallel to the projections on the cleaning surface.

2. The toothbrush head as described in claim 1, characterized in that, The number of the bristle carriers is at least three.

3. The toothbrush head as described in claim 2, characterized in that, The reciprocating movement directions of the bristles of at least three of the bristle carriers converge at a point on the projection of the bristles onto the cleaning surface.

4. The toothbrush head as described in claim 1, characterized in that, The angle between the reciprocating movement direction of the bristles of the adjacent bristle carrier and the projection of the bristles onto the cleaning surface is between 15° and 120°. And / or, the angle between the reciprocating movement directions of adjacent bristle carriers and their projections onto the cleaning surface is the same.

5. The toothbrush head as described in claim 1, characterized in that, The bristles are arranged at an angle relative to the surface of the bristle carrier.

6. The toothbrush head as described in claim 5, characterized in that, The tilting direction of the bristles forms an angle with the projection of the reciprocating movement direction of the bristles onto the cleaning surface. And / or, the bristles of each of the said bristle carriers have the same tilt angle; And / or, the angle between the tilting direction of the bristles of each of the bristle carriers and the projection of the reciprocating movement direction of the bristles onto the cleaning surface is the same.

7. The toothbrush head as described in claim 1, characterized in that, The drive mechanism is also used to drive each of the bristle carriers to rotate around an axis perpendicular to the cleaning surface.

8. The toothbrush head as described in claim 7, characterized in that, The projections of at least two of the reciprocating movement directions of the bristle carriers onto the cleaning surface converge at a first intersection point; The drive mechanism drives each of the bristle carriers to rotate around an axis perpendicular to the cleaning surface and passing through the first intersection point; And / or, the rotational motion is a reciprocating rotational motion, and the reciprocating rotation angle range of the reciprocating rotational motion is less than 90°.

9. The toothbrush head as described in any one of claims 1-8, characterized in that, The reciprocating movement directions of the bristles of at least two of the bristle carriers are not parallel to the projection of the bristles onto the cleaning surface, so that each bristle contacts a different surface of the object to be cleaned during the reciprocating movement.

10. The toothbrush head as described in any one of claims 1-8, characterized in that, The reciprocating movement of the bristles is a translational motion; Alternatively, the reciprocating movement of the bristles may be a flipping motion; Alternatively, the driving mechanism drives each of the bristle carriers to perform translational motion to drive the bristles to reciprocate. Alternatively, the drive mechanism can drive each of the bristle carriers to rotate in a flipping motion to move the bristles back and forth.

11. The toothbrush head as described in any one of claims 1-8, characterized in that, The brush head body also includes an outer frame, and each of the bristle carrying parts is movably connected to the outer frame. The driving mechanism drives each of the bristle carrying parts to rotate around the movable connection point to drive the bristles to move back and forth.

12. The toothbrush head as described in claim 11, characterized in that, The brush head body also includes an elastic membrane, the peripheral edge of which is connected to the outer frame. Each of the bristle carriers is disposed on the surface of the elastic membrane and is movably connected to the outer frame through the elastic membrane. The driving mechanism drives the elastic membrane to make each of the bristle carriers rotate around the movable connection point.

13. The toothbrush head as described in claim 11, characterized in that, The driving mechanism includes a first driving member capable of reciprocating relative to the outer frame. The first driving member contacts the side of each bristle carrier that is relatively far from the active connection point and drives each bristle carrier to rotate around the active connection point.

14. The toothbrush head as described in claim 13, characterized in that, The brush head body also includes a base for connecting to the toothbrush handle. The first drive member passes through the base and performs reciprocating movement and rotational movement centered on the reciprocating movement direction relative to the base. The first driving member is inserted into and positioned on the outer frame. The first driving member is movable relative to the outer frame along the reciprocating movement direction of the first driving member, and drives the outer frame to move synchronously along the rotational movement direction of the first driving member.

15. The toothbrush head as described in claim 14, characterized in that, The driving mechanism further includes a second driving member and a transmission member. The second driving member and the transmission member are disposed within the base. The second driving member is connected to an external power source and reciprocates under the drive of the external power source. The second driving member is connected to the first driving member through the transmission member. The transmission member is used to convert the reciprocating movement of the second driving member into the reciprocating movement and rotational motion of the first driving member.

16. The toothbrush head as described in claim 13, characterized in that, The brush head body also includes a base for connecting to the toothbrush handle. The first drive member positions the base in the direction of rotation along its own axis and can reciprocate relative to the base in the direction of rotation along its own axis. The brush head body also includes a third driver, which is connected to the outer frame and drives the outer frame to rotate. The outer frame is connected to the first driving component by a thread, and the rotational movement of the outer frame drives the first driving component to reciprocate.

17. A toothbrush head comprising a brush head body and bristles, the brush head body having a cleaning surface, the bristles being disposed on the cleaning surface, characterized in that, The cleaning surface includes at least one relatively movable bristle support portion, the bristles are connected to the bristle support portion, and the toothbrush head also includes a drive mechanism, the drive mechanism is tractively connected to each of the bristle support portions and drives the bristles to reciprocate and move back and forth, and drives the bristles to rotate about an axis perpendicular to the cleaning surface.

18. A toothbrush, characterized in that, It includes the toothbrush head as described in any one of claims 1-17.

19. A cleaning method, characterized in that, It uses a toothbrush head as described in any one of claims 1-17 to clean the object to be cleaned, and the cleaning method includes: The cleaning surface of the toothbrush head is oriented toward the object to be cleaned and held there, so that each bristle comes into contact with different surfaces of the object to be cleaned during the reciprocating movement.

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