Toothbrush head and electric toothbrush

Abstract

The utility model relates to the field of toothbrushes, and discloses a toothbrush head and an electric toothbrush. The toothbrush head comprises: a holder; the transmission part is rotationally connected with the support, the transmission part is provided with a first end and a second end which are distributed in the first direction, and the first end is provided with an eccentrically-arranged protruding part; the brush disc is arranged on the side, away from the second end, of the first end and rotationally connected with the support, the rotating axis of the brush disc extends in the second direction, a matching protrusion is arranged on the side wall of the brush disc, and the protruding direction of the matching protrusion and the rotating axis of the brush disc are in different planes. The matching protrusion is provided with a first position and a second position, in the first position, the matching protrusion is located on the rotating path of the protruding part so that the protruding part can push the matching protrusion in the first direction, and in the second position, the matching protrusion is separated from the rotating path of the protruding part. The swing angle of the brush disc can be adjusted by changing the protruding distance of the protruding part in the first direction, the protruding part is a part independent of the brush disc, and the influence on the size of the brush disc is small.

Description

TECHNICAL FIELD

[0001] The utility model relates to toothbrush technical field, concretely relates to toothbrush head and electric toothbrush. BACKGROUND

[0002] Although the traditional manual toothbrush can satisfy the basic cleaning demand, but because the manual operation strength and frequency of user are difficult to reach the best cleaning effect, therefore the electric toothbrush emerges as the times require.

[0003] In the related art, the electric toothbrush head structure mainly includes a shell, a transmission rod and a brush disc provided with bristles. The brush disc is rotatably arranged on the shell. The front end of the transmission rod is designed with an eccentric shaft, and the eccentric shaft is in sliding fit with a sliding groove on the side wall of the brush disc. The rear end of the transmission rod is connected with a motor and can produce rotary motion under the driving of the motor. The brush disc is driven to reciprocate by the eccentric shaft during the rotation of the transmission rod, so that the bristles can move on the surface of the teeth at a certain frequency and amplitude, thereby more effectively removing dental plaque and food residues.

[0004] In order to ensure the cleaning effect, the brush disc should have enough swing angle, to a certain extent, the greater the eccentricity of the eccentric shaft, the greater the swing angle of the brush disc. However, increasing the eccentricity of the eccentric shaft, the width of the sliding groove on the brush disc should also be increased accordingly, so that the size of the brush disc is increased, which easily leads to the difficulty of operating the toothbrush in the oral cavity. SUMMARY

[0005] Therefore, the utility model provides a toothbrush head and an electric toothbrush to solve or improve the problem that the width of the sliding groove on the brush disc is increased, so that the size of the brush disc is increased.

[0006] In a first aspect, the utility model provides a toothbrush head, comprising:

[0007] a support;

[0008] a transmission member rotatably connected with the support, the rotation axis of the transmission member extending along a first direction, the transmission member having a first end and a second end distributed along the first direction, the first end being provided with eccentrically arranged protrusions;

[0009] a brush disc provided on the first end and rotatably connected with the support, the rotation axis of the brush disc extending along a second direction, the second direction intersecting or being different from the first direction, the side wall of the brush disc being provided with a matching protrusion, the protruding direction of the matching protrusion being different from the rotation axis of the brush disc;

[0010] The matching protrusion is switchable with the brush disc between a first position and a second position, in the first position, the matching protrusion is located in the rotating path of the protruding part, so that the protruding part can push the matching protrusion in the first direction, in the second position, the matching protrusion is out of the rotating path of the protruding part.

[0011] In an alternative embodiment, the number of the matching protrusions is at least two, including a first matching protrusion and a second matching protrusion.

[0012] The protruding directions of the first matching protrusion and the second matching protrusion are consistent, and both are out of the plane of the rotating axis of the brush disc, the first matching protrusion and the second matching protrusion are respectively located on both sides of the rotating axis of the brush disc.

[0013] The first matching protrusion and the second matching protrusion both have corresponding first positions and second positions.

[0014] In an alternative embodiment, the brush disc includes a disc body and a sleeve body arranged and connected in the second direction, the support is provided with a pivot extending in the second direction, the sleeve body is rotatably sleeved on the pivot, the matching protrusion is arranged on the side wall of the sleeve body, and the end of the disc body away from the sleeve body is used for arranging the bristles.

[0015] In an alternative embodiment, the inside of the support is provided with a receiving cavity, the support is provided with a first opening and a second opening.

[0016] The first opening is used for the transmission member to pass through, and at least the first end of the transmission member is arranged in the receiving cavity.

[0017] The second opening is used for the brush disc to pass through, and the end of the brush disc close to the matching protrusion is arranged in the receiving cavity, and the end of the brush disc away from the matching protrusion is arranged outside the receiving cavity.

[0018] In an alternative embodiment, the transmission member includes:

[0019] A transmission block is rotatably connected with the support, the end of the transmission block close to the brush disc is provided with the protruding part, and the end of the transmission block away from the brush disc is provided with a first counterbore, and the hole wall of the first counterbore is provided with an inner gear ring.

[0020] A transmission shaft is arranged in the first counterbore, the transmission shaft is provided with an outer gear ring, the outer gear ring is oppositely arranged with the inner gear ring, and the outer gear ring and the inner gear ring have a spacing therebetween.

[0021] A transmission gear is engaged between the inner gear ring and the outer gear ring.

[0022] In an alternative embodiment, the bottom of the first bore hole is provided with a guide ring groove, and the end of the transmission gear near the brush disc is provided with a guide shaft which is in sliding fit with the guide ring groove.

[0023] In an alternative embodiment, the toothbrush head further comprises a first support sleeve connected to the support base, the first support sleeve is sleeved on the outside of the transmission shaft and is in rotational fit with the transmission shaft.

[0024] The first support sleeve comprises a first sleeve section and a second sleeve section arranged along the first direction, the first sleeve section is arranged at the end of the second sleeve section near the brush disc, the outer diameter of the first sleeve section is smaller than that of the second sleeve section, at least part of the first sleeve section is arranged in the first bore hole, and the second sleeve section is provided with a first sealing element between the transmission block.

[0025] In an alternative embodiment, the transmission member further comprises a transition shaft connected to the end of the transmission shaft away from the brush disc.

[0026] The toothbrush head further comprises a second support sleeve connected to the support base, the second support sleeve is arranged at the end of the transition shaft away from the brush disc, the end of the second support sleeve near the brush disc is provided with a second bore hole, the end of the transition shaft away from the brush disc is arranged in the second bore hole, and the bottom of the second bore hole is provided with a through hole.

[0027] In an alternative embodiment, the transmission block is in cylindrical structure, the outer circumferential wall of the transmission block is provided with an annular groove, and the annular groove is provided with a second sealing element which is in sealing fit with the support base.

[0028] In a second aspect, the utility model also provides an electric toothbrush, which comprises:

[0029] The toothbrush head as described above;

[0030] A rotational driving device is in transmission connection with the transmission member and is used for driving the transmission member to rotate.

[0031] The toothbrush head provided by the utility model is provided with the protruding part which extends along the first direction and can push the matching protruding part on the brush disc along the first direction to drive the brush disc to rotate through the matching protruding part, so that the swing angle of the brush disc can be adjusted by changing the protruding distance of the protruding part along the first direction, and the protruding part is a part independent of the brush disc, so that the influence on the size of the brush disc is small, and the swing angle of the brush disc is increased, so that the influence on the size of the brush disc is small.

[0032] The electric toothbrush provided by the utility model comprises the toothbrush head of the utility model, and therefore comprises all the advantages of the toothbrush head. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the drawings needed to be used in the specific embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings described below are some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0034] Figure 1 The structure schematic diagram of toothbrush head provided by the embodiment of the utility model is shown in the figure.

[0035] Figure 2 The exploded structure diagram of toothbrush head is shown in the figure. Figure 1 The exploded structure diagram of toothbrush head is shown in the figure.

[0036] Figure 3 The cross-sectional view of toothbrush head provided by the embodiment of the utility model is shown in the figure.

[0037] Figure 4 The exploded structure diagram of transmission block and transmission gear provided by the embodiment of the utility model is shown in the figure.

[0038] Figure 5 The structure schematic diagram of transmission shaft, transmission block and first support sleeve provided by the embodiment of the utility model is shown in the figure.

[0039] Figure 6 The structure schematic diagram of transmission shaft and transition shaft provided by the embodiment of the utility model is shown in the figure.

[0040] Figure 7 The action process schematic diagram of convex part driving brush disc rotation provided by the embodiment of the utility model is shown in the figure.

[0041] Figure 8 The structure schematic diagram of toothbrush head and rotary driving device provided by the embodiment of the utility model is shown in the figure.

[0042] Marked with the figure:

[0043] 1, support; 101, first opening; 102, second opening; 103, pivot; 2, transmission member; 201, first end; 202, second end; 203, protruding portion; 204, transmission block; 204a, first counterbore; 204b, guide ring groove; 204c, annular groove; 204d, inner gear ring; 205, transmission shaft; 205a, outer gear ring; 206, transmission gear; 206a, guide shaft; 207, transition shaft; 3, brush disc; 301, matching protrusion; 301a, first matching protrusion; 301b, second matching protrusion; 302, disc body; 303, sleeve body; 4, first support sleeve; 401, first sleeve section; 402, second sleeve section; 403, buckle; 5, second support sleeve; 501, second counterbore; 502, through hole; 6, rotary driving device; 7, first sealing member; 8, bristles; 9, snap spring; X, first direction; Y, second direction. DETAILED DESCRIPTION

[0044] To make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0045] The embodiments of the utility model will be described below in combination with Figures 1 to 8 The toothbrush head provided in the embodiments of the utility model.

[0046] Specifically, the toothbrush head comprises a support 1, a transmission member 2 and a brush disc 3.

[0047] The transmission member 2 is rotationally connected with the support 1. The rotation axis of the transmission member 2 extends along the first direction X, and the transmission member 2 has a first end 201 and a second end 202 distributed along the first direction X, that is, along the first direction X, the transmission member 2 has the first end 201 and the second end 202.

[0048] The first end 201 of the transmission member 2 is provided with an eccentrically arranged protruding portion 203. That is, the protruding portion 203 deviates from the rotation axis of the transmission member 2, and protrudes in the direction away from the second end 202 of the transmission member 2 along the first direction X. Optionally, the protruding portion 203 is arranged on the end face of the first end 201 away from the second end 202. The second end 202 of the transmission member 2 is used to be connected with a rotary driving device 6, and the rotary driving device 6 is used to drive the transmission member 2 to rotate. For example, the rotary driving device 6 can be arranged as a motor.

[0049] The brush disc 3 is arranged at the first end 201 of the transmission member 2, and the brush disc 3 is rotationally connected with the support 1. The rotation axis of the brush disc 3 extends along a second direction Y, and the second direction Y intersects or is out of plane with the first direction X, for example, the second direction Y is perpendicular to the first direction X. The brush disc 3 is used for mounting the bristles 8.

[0050] The side wall of the brush disc 3 is provided with a matching protrusion 301. The protruding direction of the matching protrusion 301 is out of plane with the rotation axis of the brush disc 3, that is, the protruding direction of the matching protrusion 301 neither intersects nor coincides with the rotation axis of the brush disc 3. For example, referring to FIGS. 1 and 2, the rotation axis of the brush disc 3 is A, and the protruding direction of the matching protrusion 301 neither intersects nor coincides with the rotation axis A of the brush disc 3. Figure 2 and Figure 3 The protruding direction of the matching protrusion 301 neither intersects nor coincides with the rotation axis of the brush disc 3.

[0051] The matching protrusion 301 can switch between the first position and the second position along with the brush disc 3 switching between the first position and the second position, that is, the matching protrusion 301 can switch between the first position and the second position along with the rotation of the brush disc 3.

[0052] In the first position, the matching protrusion 301 is located on the rotation path of the protruding portion 203, so that the protruding portion 203 can push the matching protrusion 301 along the first direction X, thereby driving the brush disc 3 to rotate by pushing the matching protrusion 301. In the second position, the matching protrusion 301 is out of the rotation path of the protruding portion 203, thereby forming an avoidance for the protruding portion 203.

[0053] In the embodiment, when the toothbrush head is used, the second end 202 of the transmission member 2 is connected with the rotation driving device 6. When the rotation driving device 6 drives the transmission member 2 to rotate, the protruding portion 203 on the transmission member 2 rotates along with the transmission member 2. In the process of the rotation of the protruding portion 203, the matching protrusion 301 in the first position can be driven to move to the second position along the first direction X.

[0054] Since the protruding direction of the matching protrusion 301 is out of plane with the rotation axis of the brush disc 3, the matching protrusion 301 can be used as a force arm of the brush disc 3, so that the matching protrusion 301 can drive the brush disc 3 to rotate around the rotation axis of the brush disc 3 during the movement of the matching protrusion 301.

[0055] In this way, the toothbrush head provided in the embodiment of the utility model has the protruding portion 203 extending along the first direction X, and the protruding portion 203 can push the matching protrusion 301 on the brush disc 3 along the first direction X, so as to drive the brush disc 3 to rotate through the matching protrusion 301. Therefore, the swing angle of the brush disc 3 can be adjusted by changing the protruding distance of the protruding portion 203 along the first direction X, and the protruding portion 203 is a part independent of the brush disc 3, and has little influence on the size of the brush disc 3, so that increasing the swing angle of the brush disc 3 has little influence on the size of the brush disc 3.

[0056] It can be understood that, to a certain extent, the greater the protruding distance of the protruding portion 203 in the first direction X, the greater the swing angle of the brush disc 3. In addition, by changing the protruding distance of the matching protrusion 301, the swing angle of the brush disc 3 can also be adjusted, and to a certain extent, the greater the protruding distance of the matching protrusion 301, the greater the swing angle of the brush disc 3.

[0057] It should be noted that the movement of the matching protrusion 301 from the second position to the first position can be driven by the protruding portion 203 or other components, and the specific scheme will be described in other embodiments. Alternatively, even if the matching protrusion 301 is not driven to move from the second position to the first position, the eccentric vibration formed during the rotation of the eccentrically arranged protruding portion 203 of the first end 201 of the transmission member 2 can also drive the brush disc 3 to form vibration, thereby achieving the effect of cleaning teeth.

[0058] Reference Figure 2 and Figure 7 As shown in some embodiments provided by the utility model, the number of the matching protrusions 301 is at least two. Among the at least two matching protrusions 301, there are a first matching protrusion 301a and a second matching protrusion 301b.

[0059] The protruding directions of the first matching protrusion 301a and the second matching protrusion 301b are consistent, and the protruding directions of the first matching protrusion 301a and the second matching protrusion 301b are both out of the plane of the rotation axis of the brush disc 3.

[0060] The first matching protrusion 301a and the second matching protrusion 301b are respectively located on both sides of the rotation axis of the brush disc 3. Alternatively, along the protruding direction of the first matching protrusion 301a or the second matching protrusion 301b, the first matching protrusion 301a and the second matching protrusion 301b are distributed on both sides of the rotation axis of the brush disc 3. For example, as shown in Figure 2 and Figure 3 As shown, the rotation axis of the brush disc 3 is A, and the first matching protrusion 301a and the second matching protrusion 301b are distributed on both sides of the rotation axis A of the brush disc 3.

[0061] The first matching protrusion 301a and the second matching protrusion 301b each have a corresponding first position and a second position. The protruding portion 203 is used to sequentially push the first matching protrusion 301a and the second matching protrusion 301b, that is, the first matching protrusion 301a and the second matching protrusion 301b are alternately in contact with the protruding portion 203. During the process that the protruding portion 203 pushes the first matching protrusion 301a, the brush disc 3 rotates in a first rotation direction. During the process that the protruding portion 203 pushes the second matching protrusion 301b, the brush disc 3 rotates in a second rotation direction, and the first rotation direction is opposite to the second rotation direction.

[0062] In this embodiment, as shown in Figure 7As shown, since the first and second engaging protrusions 301a and 301b are distributed on both sides of the rotation axis of the brush disc 3, during the process that the protrusion portion 203 pushes the first engaging protrusion 301a in the first direction X to move it from the first position to the second position, the brush disc 3 rotates in the first rotation direction and makes the second engaging protrusion 301b move from the second position to the first position.

[0063] Until the first engaging protrusion 301a moves to the second position, the first engaging protrusion 301a is out of the rotation path of the protrusion portion 203, and at this time, the second engaging protrusion 301b moves to the first position and is in the rotation path of the protrusion portion 203.

[0064] During the process that the protrusion portion 203 continues to rotate, the second engaging protrusion 301b can be pushed in the first direction X to move from the first position to the second position, and in this process, the brush disc 3 rotates in the second rotation direction and makes the first engaging protrusion 301a move from the second position to the first position.

[0065] With the continuous rotation of the transmission member 2, the above process is repeatedly performed, so that the brush disc 3 can reciprocatingly rotate to realize cleaning.

[0066] In this way, with the continuous rotation of the transmission member 2, during the process that the protrusion portion 203 drives the first engaging protrusion 301a, the second engaging protrusion 301b moves to the corresponding first position, and during the process that the protrusion portion 203 drives the second engaging protrusion 301b, the first engaging protrusion 301a moves to the corresponding first position, so that the protrusion portion 203 can alternately drive the first and second engaging protrusions 301a and 301b during the rotation process, thereby enabling the brush disc 3 to reciprocatingly rotate.

[0067] The oscillation angle of the brush disc 3 of the toothbrush head provided in the embodiment of the utility model is in the range of 5 degrees to 30 degrees. Alternatively, the oscillation angle of the brush disc 3 is in the range of 20 degrees to 30 degrees. For example, the oscillation angle of the brush disc 3 is 5 degrees, 8 degrees, 10 degrees, 12 degrees, 14 degrees, 15 degrees, 16 degrees, 18 degrees, 20 degrees, 22 degrees, 25 degrees, 26 degrees, 28 degrees or 30 degrees.

[0068] Of course, in order to enable the brush disc 3 to reciprocatingly rotate, the first and second engaging protrusions 301a and 301b are not the only way, for example, in other embodiments provided by the utility model, the toothbrush head comprises an elastic member. The elastic member is connected between the brush disc 3 and the support 1 and is used to drive the engaging protrusion 301 to move from the second position to the first position by the brush disc 3.

[0069] In the embodiment, the protruding portion 203 drives the driving matching protrusion 301 to move from the first position to the second position, and after the driving matching protrusion 301 is separated from the rotating path of the protruding portion 203, the elastic member drives the driving matching protrusion 301 to reset from the second position to the first position, so as to be in contact with the protruding portion 203 again.

[0070] Optionally, the elastic member is a torsion spring or a tension spring.

[0071] Alternatively, in order to enable the brush disc 3 to rotate reciprocatingly, the elastic member is not limited to be arranged, for example, in other embodiments provided by the utility model, the toothbrush head comprises a first magnet and a second magnet, the first magnet and the second magnet are arranged on the brush disc 3 and the support 1 respectively, and the first magnet and the second magnet are used for mutual attraction or repulsion.

[0072] In the embodiment, the protruding portion 203 drives the driving matching protrusion 301 to move from the first position to the second position, and after the driving matching protrusion 301 is separated from the rotating path of the protruding portion 203, the elastic member drives the driving matching protrusion 301 to reset from the second position to the first position, so as to be in contact with the protruding portion 203 again.

[0073] It can be understood that even if the driving matching protrusion 301 comprises the first driving matching protrusion 301a and the second driving matching protrusion 301b, the elastic member or the magnet can be arranged between the brush disc 3 and the support 1.

[0074] Reference Figure 2 and Figure 3 As shown in the figures, in some embodiments provided by the utility model, the brush disc 3 comprises a disc body 302 and a sleeve body 303. The disc body 302 and the sleeve body 303 are arranged along the second direction Y, and the disc body 302 is connected with the sleeve body 303. The driving matching protrusion 301 is arranged on the side wall of the sleeve body 303, for example, the first driving matching protrusion 301a and the second driving matching protrusion 301b are both arranged on the side wall of the sleeve body 303.

[0075] The support 1 is provided with a pivot 103 extending along the second direction Y, and the sleeve body 303 is rotatably sleeved on the pivot 103. An end of the disc body 302 away from the sleeve body 303 is used for arranging the bristles 8.

[0076] In the embodiment, when the protruding portion 203 of the transmission member 2 drives the sleeve body 303 to rotate reciprocatingly through the driving matching protrusion 301, the disc body 302 can drive the bristles 8 to rotate reciprocatingly, so as to facilitate the bristles 8 to clean the teeth.

[0077] In some embodiments of the utility model, the toothbrush head further comprises an axial limiting piece. The axial limiting piece is arranged on the side of the disc body 302 away from the sleeve body 303, and is connected with the pivot 103. The axial limiting piece is used for limiting the axial direction of the disc body 302, preventing the brush disc 3 from being separated from the pivot 103.

[0078] In the embodiment, the axial limiting piece is arranged, which can prevent the brush disc 3 from being separated from the pivot 103, and improve the stability of the connection between the brush disc 3 and the pivot 103.

[0079] Optionally, the axial limiting piece is detachably connected with the pivot 103. In this way, the brush disc 3 can be conveniently disassembled and replaced.

[0080] Optionally, the axial limiting piece comprises a threaded piece, for example, but not limited to, a screw or a bolt. The threaded part of the threaded piece penetrates the disc body 302 and is threadedly connected with the pivot 103, and the head of the threaded piece is arranged on the side of the disc body 302 away from the sleeve body 303, so as to limit the axial direction of the disc body 302.

[0081] Optionally, the disc body 302 is provided with a counterbore for accommodating the head of the threaded piece, and the head of the threaded piece is arranged in the counterbore. In this way, the head of the threaded piece can be prevented from interfering with the bristles 8, so as to facilitate the installation of the bristles 8.

[0082] Of course, the axial limiting piece is not limited to the threaded piece, for example, in other embodiments of the utility model, the axial limiting piece comprises a snap spring. Specifically, the pivot 103 penetrates the disc body 302, and the snap spring is arranged on the side of the disc body 302 away from the sleeve body 303 and is clamped on the pivot 103.

[0083] Optionally, the disc body 302 is provided with a counterbore for accommodating the snap spring, the pivot 103 penetrates the disc body 302, and the pivot 103 does not protrude from the end face of the disc body 302 away from the sleeve body 303. The snap spring is arranged in the counterbore and is clamped with the pivot 103. In this way, the pivot 103 or the snap spring can be prevented from interfering with the bristles 8, so as to facilitate the installation of the bristles 8.

[0084] In some embodiments of the utility model, the toothbrush head further comprises a mounting seat, the bristles 8 are arranged on the mounting seat, and the mounting seat is connected with the brush disc 3, for example, the mounting seat is connected with the end of the disc body 302 away from the sleeve body 303.

[0085] In this way, the bristles 8 can be arranged on the mounting seat, and then the mounting seat is connected with the brush disc 3, so that the bristles 8 do not need to be arranged directly on the brush disc 3, thereby reducing the processing difficulty of the brush disc 3.

[0086] Optionally, the mounting seat is provided with a mounting hole near one end of the brush disc 3, and the brush disc 3 is arranged in the mounting hole, for example, the disc body 302 of the brush disc 3 is arranged in the mounting hole.

[0087] In this way, on the one hand, the connection area of the mounting seat and the brush disc 3 can be increased, so that the connection strength and stability of the mounting seat and the brush disc 3 are improved. On the other hand, the mounting seat cooperates with the mounting hole to limit the mounting seat in the direction perpendicular to the second direction Y, so that the position accuracy and mounting stability of the mounting seat are ensured.

[0088] Optionally, the brush disc 3 is connected with the mounting hole in an interference fit or connected with the buckle 403. In this way, the brush 8 can be disassembled and replaced.

[0089] Of course, in other embodiments, the brush disc 3 can be connected with the mounting seat in an adhesive manner.

[0090] In some embodiments provided by the utility model, the inside of the support 1 is provided with a containing cavity, and the support 1 is provided with a first opening 101 and a second opening 102. For example, the first opening 101 is arranged along the first direction X, and the second opening 102 is arranged along the second direction Y.

[0091] The first opening 101 is used for allowing the transmission member 2 to pass through, and at least the first end 201 of the transmission member 2 is arranged inside the containing cavity. Figure 6 And Figure 8 As shown in the figure, the transmission member 2 is arranged in the containing cavity, so that the overall structure of the toothbrush head is more compact. Of course, in other embodiments, the first end 201 of the transmission member 2 can be arranged in the containing cavity, and the second end 202 of the transmission member 2 can be arranged outside the containing cavity.

[0092] The second opening 102 is used for allowing the brush disc 3 to pass through, and one end of the brush disc 3 close to the cooperating protrusion 301 is arranged inside the containing cavity, and the other end of the brush disc 3 away from the cooperating protrusion 301 is arranged outside the containing cavity. For example, referring to Figure 3 As shown in the figure, the sleeve body 303 of the brush disc 3 is arranged in the containing cavity through the second opening 102, and the disc body 302 of the brush disc 3 is arranged outside the containing cavity and blocks the second opening 102, so as to reduce the impurities from the outside into the containing cavity.

[0093] In this embodiment, at least the first end 201 of the transmission member 2 is arranged in the containing cavity, that is, the protruding part 203 is arranged in the containing cavity, and the cooperating protrusion 301 is also arranged in the containing cavity. The cooperating protrusion 301 and the protruding part 203 interact in the containing cavity, so that the influence of external objects on the cooperating protrusion 301 and the protruding part 203 can be prevented, and the influence of the high-speed rotating transmission member 2, the protruding part 203 or the cooperating protrusion 301 on the user can also be prevented.

[0094] Referring toFigures 2-5 As shown, in some embodiments of the utility model, the transmission member 2 includes a transmission block 204, a transmission shaft 205 and a transmission gear 206.

[0095] The transmission block 204 is rotatably connected with the support 1, for example, the transmission block 204 is rotatably arranged in the accommodating cavity. The transmission block 204 is provided with the protruding part 203 at one end close to the brush disc 3. The transmission block 204 is provided with a first counterbore 204a at one end away from the brush disc 3, and the hole wall of the first counterbore 204a is provided with an inner ring gear 204d.

[0096] The transmission shaft 205 is arranged in the first counterbore 204a. The transmission shaft 205 is provided with an outer ring gear 205a, and the outer ring gear 205a is arranged opposite to the inner ring gear 204d, and the outer ring gear 205a and the inner ring gear 204d have a spacing therebetween.

[0097] The transmission gear 206 is engaged between the inner ring gear 204d and the outer ring gear 205a, that is, the transmission gear 206 is arranged between the inner ring gear 204d and the outer ring gear 205a, and is engaged with the inner ring gear 204d and the outer ring gear 205a respectively.

[0098] In this embodiment, in use, the transmission shaft 205 is connected with the rotary driving device 6. In the process of rotation of the transmission shaft 205, the outer ring gear 205a on the transmission shaft 205 is engaged with the transmission gear 206 to drive the transmission gear 206 to rotate. In the process of rotation of the transmission gear 206, the transmission gear 206 is engaged with the inner ring gear 204d to drive the transmission block 204 to rotate through the inner ring gear 204d, and then the protruding part 203 on the transmission block 204 is rotated.

[0099] In this way, the power of the transmission shaft 205 is transmitted to the transmission block 204 through the outer ring gear 205a, the transmission gear 206 and the inner ring gear 204d, and the effect of gear reduction can be achieved, so that the problem that the rotation speed of the protruding part 203 is lower than the rotation speed of the rotary driving device 6 is solved, and the rotation speed of the protruding part 203 meets the design requirement.

[0100] In addition, the rotary driving device 6 is usually arranged as a motor, and the motor can maintain a high rotation speed while achieving speed reduction through gears, so that the motor works in a high-efficiency working interval and the efficiency of the motor is improved.

[0101] And in the case of a certain power, the rotation speed of the motor is inversely proportional to the torque. That is, the higher the rotation speed, the smaller the torque. The reduction of the torque means that the thickness and processing difficulty of the mechanical structure material required by the motor will also be reduced, which helps to reduce the size of the motor.

[0102] Reference Figure 4As shown, in some embodiments provided by the utility model, the hole bottom of the first counterbore 204a is provided with a guide ring groove 204b. The end of the transmission gear 206 close to the brush disc 3 is provided with a guide shaft 206a. The guide shaft 206a is in sliding fit with the guide ring groove 204b.

[0103] In this embodiment, during the transmission of the transmission gear 206 between the inner ring gear 204d and the outer ring gear 205a, the transmission gear 206 will revolve relative to the outer ring gear 205a. During the revolution of the transmission gear 206 relative to the outer ring gear 205a, the guide shaft 206a on the transmission gear 206 slides in the guide ring groove 204b, so that the guide ring groove 204b guides the guide shaft 206a, preventing the transmission gear 206 from deviating, so that the transmission gear 206 can maintain the correct posture between the inner ring gear 204d and the outer ring gear 205a, ensuring normal transmission.

[0104] Reference Figure 5 As shown, in some embodiments provided by the utility model, the toothbrush head further comprises a first support sleeve 4.

[0105] The first support sleeve 4 is connected with the support 1, for example, the first support sleeve 4 is arranged in the accommodating cavity of the support 1, and the first support sleeve 4 is connected with the cavity wall of the accommodating cavity. The first support sleeve 4 is sleeved on the outside of the transmission shaft 205 and is in rotational fit with the transmission shaft 205.

[0106] The first support sleeve 4 comprises a first sleeve section 401 and a second sleeve section 402 arranged along the first direction X. The first sleeve section 401 is arranged at the end of the second sleeve section 402 close to the brush disc 3, and the outer diameter of the first sleeve section 401 is smaller than that of the second sleeve section 402. At least part of the first sleeve section 401 is arranged in the first counterbore 204a.

[0107] The second sleeve section 402 and the transmission block 204 are provided with a first sealing element 7. For example, the first sealing element 7 is arranged as a sealing ring, the sealing ring is sleeved on the outside of the first sleeve section 401, and the sealing ring is arranged between the end face of the second sleeve section 402 and the end face of the transmission block 204.

[0108] In this embodiment, by sleeving the first support sleeve 4 on the outside of the transmission shaft 205, a supporting effect can be formed on the transmission shaft 205, and the rigidity of the transmission shaft 205 is improved.

[0109] By arranging the first sleeve section 401 in the first counterbore 204a, the transmission gear 206 in the first counterbore 204a can be limited, the transmission gear 206 is prevented from moving along the first direction X, and the stability of the transmission gear 206 between the inner ring gear 204d and the outer ring gear 205a is improved.

[0110] By arranging the first sealing member 7 between the second sleeve segment 402 and the transmission block 204, impurities can be prevented from entering the first counterbore 204a through the gap between the transmission block 204 and the first support sleeve 4, thereby affecting the engagement between the transmission gear 206 and the inner gear ring 204d or the outer gear ring 205a.

[0111] Optionally, as shown in Figure 5 , in the first direction X, the end of the transmission shaft 205 close to the brush disc 3 passes through the transmission block 204 and is installed with a snap spring 9. The end of the transmission shaft 205 away from the brush disc 3 passes through the first support sleeve 4 and is installed with a snap spring 9.

[0112] In this embodiment, by installing the snap springs 9 at both ends of the transmission shaft 205, the transmission block 204 and the first support sleeve 4 can be limited between the snap springs 9 at both ends of the transmission shaft 205. Since the first support sleeve 4 is connected to the support 1, under the limitation of the snap springs 9, the transmission block 204 and the transmission shaft 205 both have accurate and fixed positions relative to the first support sleeve 4 in the first direction X, thereby preventing the transmission block 204 or the transmission shaft 205 from being displaced in the first direction X, and further ensuring that the transmission block 204 and the brush disc 3, the outer gear ring 205a and the transmission gear 206, and the transmission gear 206 and the inner gear ring 204d can all be stably transmitted.

[0113] In addition, as shown in Figure 5 , when assembling the toothbrush head, the transmission member 2, the transmission shaft 205, the transmission gear 206, the first sealing member 7, the first support sleeve 4 and the snap spring 9 can be assembled first and then installed into the accommodating cavity of the mounting seat, so as to avoid the problem of inconvenient operation caused by direct installation in the accommodating cavity.

[0114] Optionally, the bottom of the first counterbore 204a is provided with a connecting hole through which the transmission shaft 205 passes, and a sealing member or a wear-resistant member is installed on the hole wall of the connecting hole, and the transmission shaft 205 abuts against the sealing member or the wear-resistant member.

[0115] In this embodiment, by arranging the sealing member or the wear-resistant member, on the one hand, the gap between the transmission shaft 205 and the hole wall of the connecting hole can be sealed, and impurities can be prevented from entering the first counterbore 204a through the gap between the transmission shaft 205 and the connecting hole.

[0116] On the other hand, the wear of the transmission block 204 can be reduced, and the service life of the transmission block 204 can be prolonged.

[0117] In some embodiments of the utility model, as shown in Figure 3 and Figure 4As shown, the transmission block 204 is provided in a cylindrical structure, and an annular groove 204c is arranged on the outer circumferential wall of the transmission block 204. A second sealing member (not shown in the figure) is arranged in the annular groove 204c and abuts against the support 1, for example, the cavity wall of the accommodating cavity.

[0118] In this embodiment, by arranging the annular groove 204c on the outer sidewall of the transmission block 204 and arranging the second sealing member in the annular groove 204c, on the one hand, a seal can be formed between the transmission block 204 and the support 1 to prevent impurities from entering the first counterbore 204a through the gap between the transmission block 204 and the support 1 and ultimately through the gap between the transmission block 204 and the first support sleeve 4.

[0119] On the other hand, the second sealing member can be supported between the transmission block 204 and the support 1 to reduce the friction between the transmission block 204 and the support 1, so that the transmission block 204 rotates smoothly, and the frictional noise between the transmission block 204 and the support 1 can be reduced.

[0120] Optionally, referring to Figure 3 and Figure 5 As shown, the outer sidewall of the first support sleeve 4 is provided with a buckle 403, and the cavity wall of the accommodating cavity is provided with a clamping groove corresponding to the buckle 403, and the clamping groove is used for clamping the buckle 403.

[0121] In this embodiment, when installing the first support sleeve 4, the first support sleeve 4 is pushed into the accommodating cavity from the first opening 101, and when the buckle 403 is clamped into the clamping groove of the cavity wall, the first support sleeve 4 is installed in place.

[0122] Optionally, the number of buckles 403 on the outer sidewall of the first support sleeve 4 is at least two, and the at least two buckles 403 are arranged in sequence along the circumference of the first support sleeve 4, thereby improving the connection strength between the first support sleeve 4 and the support 1, and making the stress of the first support sleeve 4 balanced to improve the stability of the first support sleeve 4.

[0123] Optionally, referring to Figure 2 and Figure 5 As shown, the buckle 403 is provided with a through groove on both sides. The through groove penetrates the sidewall of the first support sleeve 4 in the direction of the wall thickness of the first support sleeve 4. In the first direction X, the through groove penetrates one end of the first support sleeve 4 away from the transmission block 204. In this way, the displacement of the buckle 403 in the radial direction of the first support sleeve 4 can be increased, so as to facilitate the clamping of the buckle 403 and the clamping groove on the support 1.

[0124] Referring to Figure 3 and Figure 6As shown, in some embodiments of the utility model, the transmission member 2 further comprises a transition shaft 207. The transition shaft 207 is connected to the end of the transmission shaft 205 away from the brush disc 3, for example, the transition shaft 207 can be keyed to the transmission shaft 205. The end of the transition shaft 207 away from the transmission shaft 205 is used to be connected to the rotary drive device 6.

[0125] The toothbrush head further comprises a second support sleeve 5 connected to the support 1. The second support sleeve 5 is located at the end of the transition shaft 207 away from the brush disc 3. The end of the second support sleeve 5 close to the brush disc 3 is provided with a second counterbore 501, and the end of the transition shaft 207 away from the brush disc 3 extends into the second counterbore 501. The bottom of the second counterbore 501 is provided with a through hole 502, and the through hole 502 is used for the output shaft of the rotary drive device 6 to pass through to connect the transition shaft 207.

[0126] In order to adapt to the depth of the human oral cavity, the toothbrush head needs to have a long enough length, in this embodiment, when the length of the support 1 is lengthened, the transition shaft 207 is arranged to transition between the rotary drive device 6 and the transmission shaft 205, which can transmit the power of the rotary drive device 6 to the transmission shaft 205, thereby ensuring the power transmission between the transmission shaft 205 and the rotary drive device 6.

[0127] In addition, by supporting the transition shaft 207 through the second support sleeve 5, the rigidity of the transition shaft 207 can be improved. And the second support sleeve 5 can form a plugging effect on the first opening 101, reducing the impurities entering the receiving cavity of the support 1.

[0128] Optionally, the end of the transition shaft 207 away from the brush disc 3 is provided with a counterbore, the output shaft of the rotary drive device 6 passes through the through hole 502 of the second support seat and extends into the counterbore of the transition shaft 207, for example, the output shaft can be clamped with the transition shaft 207.

[0129] Optionally, the second support sleeve 5 is clamped with the support 1. For example, the outer circumferential wall of the second support sleeve 5 is provided with an annular protrusion, the cavity wall of the receiving cavity is provided with an annular groove at the position corresponding to the annular protrusion, and the annular protrusion is clamped with the annular groove.

[0130] Optionally, the outer wall of the second support sleeve 5 is provided with a limiting protrusion extending along the first direction X. The cavity wall of the receiving cavity is provided with a limiting groove extending along the first direction X, and the limiting protrusion is arranged in the limiting groove, thereby forming a circumferential limiting for the second support sleeve 5, preventing the second support sleeve 5 from rotating with the transition shaft 207.

[0131] In the embodiment of the utility model, an electric toothbrush is further provided.

[0132] Specifically, the electric toothbrush comprises a rotary drive device 6 and a toothbrush head as described above.

[0133] The rotating driving device 6 is in transmission connection with the transmission member 2 and is used for driving the transmission member 2 to rotate.

[0134] It should be noted that the electric toothbrush comprises the toothbrush head and all the advantages of the toothbrush head, and thus the above-mentioned advantages of the toothbrush head will not be repeated.

[0135] Optionally, the rotating driving device 6 is an electric motor.

[0136] It can be understood that in use, the support 1 of the toothbrush head is connected with the handle of the electric toothbrush, i.e. the support 1 of the toothbrush head is fixed with the handle of the electric toothbrush.

[0137] Although the embodiments of the present application have been described with reference to the drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes shall fall within the scope defined by the appended claims.

Claims

1. A toothbrush head characterized by, The application relates to a brush head, comprising: a support (1); a transmission member (2) rotatably connected with the support (1), wherein the rotation axis of the transmission member (2) extends along a first direction (X), the transmission member (2) has a first end (201) and a second end (202) distributed along the first direction (X), and the first end (201) is provided with a protrusion (203) arranged eccentrically; a brush disc (3) arranged at the first end (201) and rotatably connected with the support (1), wherein the rotation axis of the brush disc (3) extends along a second direction (Y), the second direction (Y) intersects or is out of the first direction (X), and the side wall of the brush disc (3) is provided with a matching protrusion (301), and the protruding direction of the matching protrusion (301) is out of the rotation axis of the brush disc (3); wherein the matching protrusion (301) can switch between a first position and a second position along with the brush disc (3), in the first position, the matching protrusion (301) is located in the rotation path of the protrusion (203), so that the protrusion (203) can push the matching protrusion (301) along the first direction (X), and in the second position, the matching protrusion (301) is out of the rotation path of the protrusion (203).

2. The toothbrush head of claim 1, wherein, The number of the matching protrusions (301) is at least two, wherein the matching protrusions (301) include a first matching protrusion (301a) and a second matching protrusion (301b); the protruding directions of the first matching protrusion (301a) and the second matching protrusion (301b) are consistent, and both are out of the rotation axis of the brush disc (3), and the first matching protrusion (301a) and the second matching protrusion (301b) are respectively located on the two sides of the rotation axis of the brush disc (3); the first matching protrusion (301a) and the second matching protrusion (301b) both have corresponding first positions and second positions.

3. The toothbrush head of claim 1, wherein, The brush disc (3) comprises a disc body (302) and a sleeve body (303) arranged and connected along the second direction (Y), the support (1) is provided with a pivot (103) extending along the second direction (Y), the sleeve body (303) is rotatably sleeved on the pivot (103), the matching protrusion (301) is arranged on the side wall of the sleeve body (303), and the end of the disc body (302) away from the sleeve body (303) is used for arranging bristles (8).

4. The toothbrush head of claim 1, wherein, The inside of the support (1) is provided with a containing cavity, the support (1) is provided with a first opening (101) and a second opening (102); the first opening (101) is used for allowing the transmission member (2) to pass through, and at least the first end (201) of the transmission member (2) is arranged in the containing cavity; the second opening (102) is used for allowing the brush disc (3) to pass through, and the end of the brush disc (3) close to the matching protrusion (301) is arranged in the containing cavity, and the end of the brush disc (3) away from the matching protrusion (301) is arranged outside the containing cavity.

5. The toothbrush head according to any one of claims 1-4, wherein, The transmission member (2) comprises: A transmission block (204) is rotationally connected with the support (1), the transmission block (204) is provided with the protruding part (203) at one end close to the brush disc (3), the transmission block (204) is provided with a first counterbore (204a) at one end away from the brush disc (3), and an inner ring gear (204d) is arranged on the hole wall of the first counterbore (204a); A transmission shaft (205) is arranged in the first counterbore (204a), the transmission shaft (205) is provided with an outer ring gear (205a), the outer ring gear (205a) is arranged opposite to the inner ring gear (204d), and the outer ring gear (205a) has a spacing with the inner ring gear (204d); A transmission gear (206) is engaged between the inner ring gear (204d) and the outer ring gear (205a).

6. The toothbrush head of claim 5, wherein, The hole bottom of the first counterbore (204a) is provided with a guide ring groove (204b), one end of the transmission gear (206) close to the brush disc (3) is provided with a guide shaft (206a), and the guide shaft (206a) is in sliding fit with the guide ring groove (204b).

7. The toothbrush head of claim 5, wherein, The toothbrush head further comprises a first support sleeve (4) connected with the support (1), the first support sleeve (4) is sleeved on the outside of the transmission shaft (205) and rotationally cooperates with the transmission shaft (205); The first support sleeve (4) comprises a first sleeve section (401) and a second sleeve section (402) arranged along the first direction (X), the first sleeve section (401) is arranged at one end of the second sleeve section (402) close to the brush disc (3), the outer diameter of the first sleeve section (401) is smaller than that of the second sleeve section (402), at least part of the first sleeve section (401) is arranged in the first counterbore (204a), and a first sealing member (7) is arranged between the second sleeve section (402) and the transmission block (204).

8. The toothbrush head of claim 5, wherein, The transmission member (2) further comprises a transition shaft (207) connected to one end of the transmission shaft (205) away from the brush disc (3); The toothbrush head further comprises a second support sleeve (5) connected with the support (1), the second support sleeve (5) is located at one end of the transition shaft (207) away from the brush disc (3), one end of the second support sleeve (5) close to the brush disc (3) is provided with a second counterbore (501), the transition shaft (207) extends into the second counterbore (501) at one end away from the brush disc (3), and the hole bottom of the second counterbore (501) is provided with a through hole (502).

9. The toothbrush head of claim 5, wherein, The transmission block (204) is in a cylindrical structure, an annular groove (204c) is arranged on the outer circumferential wall of the transmission block (204), a second sealing member is arranged in the annular groove (204c), and the second sealing member is used for sealing cooperation with the support (1).

10. An electric toothbrush characterized by comprising: The toothbrush head comprises: The toothbrush head according to any one of claims 1-9; A rotary driving device (6) is rotationally connected with the transmission member (2) and is used for driving the transmission member (2) to rotate.

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