Rotary swing mechanism and electric toothbrush

Abstract

The utility model relates to the technical field of electric toothbrushes, and discloses a rotary swing mechanism and an electric toothbrush. The shell is provided with a center turntable; the rotating bracket comprises a base station and a first force arm; the rotating shaft and the central turntable are coaxially arranged; the fixed clamping piece is provided with a first groove and a second groove; the rotating shaft is arranged in the first groove; the first force arm is arranged in the second groove; one end, in the second direction, of the sliding rod extends into the first mounting cavity and is connected with the fixing clamping piece; the sliding rod is used for driving the fixed clamping piece to do reciprocating linear movement under the action of external force so that the fixed clamping piece can drive the rotary support to do circumferential reciprocating swing relative to the center rotary table. According to the rotary swing mechanism, the rotary swing effect of the brush head can be achieved through a simple sliding rod-fixed clamping piece-rotary support combined structure.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric toothbrush technical field, concretely relates to a gyration swing mechanism and electric toothbrush. BACKGROUND

[0002] Electric toothbrush passes through the quick rotation or vibration of motor, makes the brush head produce high frequency vibration, realizes the cleaning to oral cavity.

[0003] The gyration swing electric toothbrush is widely welcomed with its efficient cleaning effect, however, the existing gyration swing electric toothbrush, complex structure, cost is higher, movement effect is poorer. How to simplify structure while realizing the gyration swing effect of brush head has been the problem of attention in the industry. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model provides a gyration swing mechanism and electric toothbrush to solve the problem of how to simplify structure while realizing the gyration swing effect of brush head.

[0005] Firstly, the utility model provides a gyration swing mechanism, with first direction, second direction and third direction intersecting each other, comprising:

[0006] Brush head;

[0007] Shell, with center turntable;

[0008] Rotary support, including base and first force arm, base and center turntable coaxial arrangement;First force arm is eccentric to center turntable;

[0009] Shaft, with center turntable coaxial arrangement;Shaft and first force arm along the one end of third direction and brush head are connected;

[0010] Fixed clamp, with first recess and second recess;Shaft is located in first recess;First force arm is located in second recess;

[0011] Slide rod, its one end along the second direction extends to first installation cavity and is connected with fixed clamp;Slide rod is used for under the action of external force and / or compression spring drives fixed clamp reciprocating straight line movement along the second direction, so that fixed clamp drives rotary support to reciprocate circumferentially relative to center turntable.

[0012] Beneficial effects: the gyration swing mechanism provided by the utility model, in the working process, the slide bar reciprocates linearly along the second direction Y, when the slide bar reciprocates linearly under the action of external force, the slide bar drives the fixed clamping piece to reciprocate linearly along the second direction Y, the fixed clamping piece drives the first force arm to reciprocate circularly around the center turntable as the rotating center, thereby the first force arm drives the brush head to reciprocate circularly, through the design, the simple slide bar-fixed clamping piece-rotary support combination structure realizes the reciprocating swing effect of the brush head.

[0013] In an alternative embodiment, the fixed clamping piece comprises a chuck body and a first clamping part; the first recess and the second recess are formed through the chuck body; the first clamping part is arranged on the side of the chuck body facing the slide bar along the third direction;

[0014] The end of the slide bar close to the fixed clamping piece along the second direction is provided with a second clamping part, and the second clamping part is clamped with the first clamping part.

[0015] Beneficial effects: in the assembly process, the rotary support is first built-in the first mounting cavity, and the base and the center turntable are coaxially arranged; then the slide bar is inserted into the first mounting cavity from the second mounting cavity, and then the fixed clamping piece is built-in the first mounting cavity, and the first clamping part is clamped with the second clamping part, thereby realizing the connection between the fixed clamping piece and the slide bar, so that the slide bar drives the fixed clamping piece to reciprocate linearly along the second direction Y.

[0016] In an alternative embodiment, the first clamping part comprises a first bone site, a second bone site and a third bone site, the first bone site is arranged on one side of the chuck body along the first direction, the second bone site and the third bone site are arranged on the other side of the chuck body along the first direction, and the second bone site and the third bone site are oppositely spaced along the second direction;

[0017] The second clamping part is provided with a groove site matched with the first bone site, the second bone site and the third bone site.

[0018] Beneficial effects: in the assembly process, when the first clamping part is clamped with the second clamping part, the bone site and the groove site are aligned along the third direction Z, and then the fixed clamping piece is pressed along the third direction Z towards the second clamping part, so that the bone site is clamped into the groove site along the third direction Z, thereby realizing the connection between the fixed clamping piece and the slide bar, and the assembly is more convenient.

[0019] In an alternative embodiment, the second clamping part is provided with a third recess extending along the second direction, and the third recess is oppositely arranged with the first recess along the third direction.

[0020] Beneficial effects: By setting the third groove on the second clamping part, the rotating shaft is avoided, and interference with the rotating shaft during movement is avoided.

[0021] In an alternative embodiment, the housing comprises a first shell and a second shell;

[0022] The first shell comprises a bottom wall and a first side wall extending from the peripheral edge of the bottom wall in the third direction away from the bottom wall, and the first side wall and the bottom wall together form a first mounting cavity;

[0023] The center turntable, the rotating support and the fixing clamp are arranged in the first mounting cavity;

[0024] The second shell comprises a second side wall, and the second side wall forms a second mounting cavity, and the second mounting cavity is in communication with the first mounting cavity; the slide rod is arranged in the second mounting cavity.

[0025] Beneficial effects: The rotating support and the fixing clamp can be installed in the first mounting cavity, and the slide rod can be installed in the second mounting cavity.

[0026] In an alternative embodiment, the first shell is provided with a first mounting opening at one end away from the bottom wall in the third direction;

[0027] The second shell is provided with a second mounting opening at one end away from the first shell in the second direction;

[0028] The swing mechanism further comprises a cover plate and a tail cover, the cover plate is arranged at the first mounting opening, and the tail cover is arranged at the second mounting opening.

[0029] Beneficial effects: By arranging the cover plate at the first mounting opening, the rotating support and the fixing clamp and other components in the first mounting cavity are limited in the third direction Z, so that displacement of the rotating support and the fixing clamp and other components during movement is avoided; by arranging the tail cover at the second mounting opening, the slide rod in the second mounting cavity is limited in the second direction Y, so that the slide rod is prevented from being separated from the second shell during movement.

[0030] In an alternative embodiment, the base has a circular hole arranged therethrough; the base is provided with a first recess at one end facing the bottom wall;

[0031] The center turntable extends from the bottom wall in the third direction towards the first mounting opening; the center turntable comprises a first circular platform portion and a second circular platform portion, the first circular platform portion is arranged in the circular hole, and the second circular platform portion is arranged in the first recess.

[0032] Beneficial effects: by embedding the first circular cone in the circular hole, the base is coaxial with the center rotating table, so that the rotating support rotates around the center rotating table; by embedding the second circular cone in the first sink, not only can the rotating support be limited, but also can ensure the stable rotation of the rotating support relative to the center rotating table, and it is beneficial to save the space occupation of the rotating support in the first installation cavity and improve the space utilization.

[0033] In an alternative embodiment, the first shell is provided with a second sink at one end close to the first installation port; the cover plate is embedded in the second sink;

[0034] The first shell is also provided with a first clamping table, which is extended from the first side wall along the first radial direction towards the first installation cavity;

[0035] The cover plate is provided with a first clamping groove, which is clamped with the first clamping table.

[0036] Beneficial effects: by embedding the cover plate in the second sink and clamping the first clamping groove with the first clamping table, the detachable fixed connection of the cover plate and the first shell is realized, which is convenient for disassembly and maintenance.

[0037] In an alternative embodiment, the center rotating table is provided with a first shaft hole along the third direction; the cover plate is provided with a second shaft hole along the third direction, which is oppositely arranged with the first shaft hole;

[0038] The rotating shaft is fixedly arranged in the first shaft hole at one end along the third direction, and in the second shaft hole at the other end.

[0039] Beneficial effects: by arranging the second shaft hole on the cover plate, the rotating shaft is positioned through the second shaft hole, avoiding loosening during movement.

[0040] In an alternative embodiment, the cover plate is also provided with an arc-shaped hole, which is used for avoiding the first force arm.

[0041] Beneficial effects: by arranging the arc-shaped hole on the cover plate, the movement track of the first force arm is avoided through the arc-shaped hole; at the same time, by clamping the first clamping groove with the first clamping table, the cover plate is prevented from rotating in the second sink, so as to prevent the arc-shaped hole from deviating from the set position and avoid the interference between the cover plate and the first force arm.

[0042] In an alternative embodiment, the second shell has a first limiting part, which is arranged at one end of the second shell close to the first shell along the second direction, and is extended from the inner side wall of the second shell along the second radial direction towards the second installation cavity;

[0043] The tail cover has a second limiting part, which is extended from the inner side wall of the tail cover along the second radial direction towards the second installation cavity;

[0044] The slide bar also includes a first shaft segment and a second shaft segment. The first shaft segment is located at one end of the second shaft segment near the second locking portion. The first shaft segment has a first end face at the end near the second locking portion along the second direction. The first end face is disposed opposite to the first limiting portion. The second shaft segment has a second end face at the end away from the first shaft segment along the second direction. The second end face is disposed opposite to the second limiting portion.

[0045] The first limiting part and the second limiting part are separated by a first distance along the second direction, and the first end face and the second end face are separated by a second distance. The absolute value of the difference between the first distance and the second distance is the maximum stroke of the slide rod.

[0046] Beneficial effects: By providing a first limiting part on the second housing and a second limiting part on the tail cover, the slide rod is limited along the second direction Y; when the first end face of the slide rod abuts against the first limiting part, the slide rod moves to the maximum stroke, and when the second end face of the slide rod abuts against the second limiting part, the slide rod moves to the initial position.

[0047] In one alternative embodiment, the rotary swing mechanism further includes a compression spring, which is coaxially arranged with the slide bar; the compression spring is used to push the slide bar and keep the slide bar tending to move away from the central turntable in a second direction.

[0048] Beneficial effects: When the slide bar moves towards the center turntable under the action of external force, the slide bar pushes the compression spring to compress and store force. When the slide bar reaches the set closest distance with the center turntable, the external force is removed or begins to act in the opposite direction. The compression spring releases pressure and pushes the slide bar away from the center turntable until the slide bar begins to move in the next cycle of reciprocating linear movement. Thus, the slide bar drives the fixed clamp to move in the second direction Y in a reciprocating linear movement.

[0049] In one optional embodiment, the diameter of the second shaft segment is larger than the diameter of the first shaft segment; the second shaft segment has a third end face at one end along the second direction near the first shaft segment; and the first limiting portion has a fourth end face at one end along the second direction toward the tail cap.

[0050] The compression spring is sleeved on the first shaft section, with one end of the compression spring abutting against the third end face and the other end abutting against the fourth end face.

[0051] Beneficial effects: In the initial state, one end of the compression spring abuts against the third end face and the other end abuts against the fourth end face, thereby pre-compressing the compression spring in the second mounting cavity, ensuring that the slide rod maintains the tendency to move away from the central turntable along the second direction Y, and ensuring that the slide rod can return to the initial position after moving to the maximum stroke.

[0052] In one optional embodiment, the first limiting part has two first limiting surfaces, which are arranged at a relative interval along a third direction;

[0053] The slide bar also includes a third shaft segment, which is located between the second locking part and the first shaft segment; the third shaft segment has two second limiting surfaces that are arranged opposite each other along a third direction, each second limiting surface being arranged opposite to the first limiting surface along a third direction, and the second limiting surface being slidably connected to the first limiting surface.

[0054] Beneficial effects: By sliding the second limiting surface to the first limiting surface, the slide rod is limited, preventing it from jumping along the third direction Z during movement and preventing it from deflecting, thus ensuring that the slide rod moves smoothly back and forth in a straight line along the second direction Y within the second mounting cavity.

[0055] In one optional embodiment, the first limiting part further has two third limiting surfaces, which are arranged at intervals relative to each other along the first direction;

[0056] The second locking part has two fourth limiting surfaces arranged opposite to each other along the first direction. The fourth limiting surfaces and the third limiting surfaces are arranged opposite to each other along the first direction and are slidably connected.

[0057] Beneficial effects: By sliding the fourth limiting surface and the third limiting surface together, the slide rod is limited, preventing it from jumping or deviating along the first direction X during movement, and ensuring that the slide rod moves smoothly back and forth in a straight line along the second direction Y within the second mounting cavity.

[0058] In one alternative embodiment, the brush head has a first mounting hole and a second mounting hole on the side facing the rotating bracket in a third direction; the end of the rotating shaft away from the central turntable is built into the first mounting hole, and the end of the first lever arm away from the base is built into the second mounting hole.

[0059] Beneficial effects: It can achieve a fixed connection between the rotating bracket and the brush head, and then drive the brush head to rotate around the axis as the center of rotation through the rotating bracket.

[0060] Secondly, this utility model also provides an electric toothbrush, including: a motor, and a rotary swing mechanism as described above; the motor is connected to the slide rod via a transmission.

[0061] Beneficial effects: The electric toothbrush of the second aspect, by adopting the rotary oscillation mechanism of the first aspect, can achieve the rotary oscillation effect of the brush head with a simple combination structure of slide bar-fixed clip-rotating bracket. Attached Figure Description

[0062] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0063] Figure 1 This is an exploded view of a rotary swing mechanism according to an embodiment of the present utility model;

[0064] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle;

[0065] Figure 3 This is a front view of a rotary swing mechanism according to an embodiment of the present utility model;

[0066] Figure 4 for Figure 3 Sectional view of section BB;

[0067] Figure 5 for Figure 4 A sectional view of section C-C;

[0068] Figure 6 for Figure 5 A cross-sectional view of the housing of the rotary swing mechanism shown;

[0069] Figure 7 for Figure 6 A magnified view of a portion of point D in the middle;

[0070] Figure 8 for Figure 4 A cross-sectional view of the housing of the rotary swing mechanism shown;

[0071] Figure 9 for Figure 8 A sectional view of section EE;

[0072] Figure 10 for Figure 1 A perspective view of the rotating support of the rotary swing mechanism shown in the figure;

[0073] Figure 11 for Figure 10 The rotating bracket shown is a cross-sectional view along a third direction;

[0074] Figure 12 for Figure 1 A first perspective view of the fixing clip of the rotary swing mechanism shown;

[0075] Figure 13 for Figure 1A second perspective view of the fixing clip of the rotary swing mechanism shown;

[0076] Figure 14 for Figure 1 A perspective view of the slide bar of the rotary swing mechanism shown in the figure;

[0077] Figure 15 for Figure 4 A cross-sectional view of the slide bar of the rotary swing mechanism shown;

[0078] Figure 16 for Figure 5 A cross-sectional view of the slide bar of the rotary swing mechanism shown;

[0079] Figure 17 for Figure 1 A perspective view of the cover plate of the rotary swing mechanism shown in the figure;

[0080] Figure 18 This is a three-dimensional assembly drawing of a sliding rod, rotating bracket, rotating shaft, and fixing clip of a rotary swing mechanism according to an embodiment of the present utility model.

[0081] Figure 19 This is a perspective view of a brush head of a rotary swing mechanism according to an embodiment of the present utility model;

[0082] Figure 20 This is an assembly diagram of the brush head, rotating shaft, and first lever arm of a rotary swing mechanism according to an embodiment of the present invention.

[0083] Explanation of reference numerals in the attached figures:

[0084] 10. Brush head; 101. First mounting hole; 102. Second mounting hole;

[0085] 20. Outer shell; 201. First mounting cavity; 202. Second mounting cavity; 203. First mounting port; 204. Second mounting port;

[0086] 21. Central turntable; 211. First frustum; 212. Second frustum; 213. First shaft hole;

[0087] 22. First shell; 221. Bottom wall; 222. First side peripheral wall; 223. Second settling tank; 224. First clamping platform;

[0088] 23. Second housing; 231. Second side peripheral wall; 232. First limiting part; 2321. Fourth end face; 2322. First limiting surface; 2323. Third limiting surface;

[0089] 30. Rotating support; 31. Base; 311. Circular hole; 312. First settling groove; 32. First lever arm; 33. Second lever arm;

[0090] 40. Shaft;

[0091] 50. Fixing clip; 501. First groove; 502. Second groove; 51. Chuck body; 52. First engaging part; 521. First rib position; 522. Second rib position; 523. Third rib position;

[0092] 60. Slide rod; 61. Second locking part; 611. First groove; 612. Second groove; 613. Third groove; 614. Third groove; 615. Fourth limiting surface; 62. First shaft segment; 621. First end face; 63. Second shaft segment; 631. Second end face; 632. Third end face; 64. Third shaft segment; 641. Second limiting surface;

[0093] 70. Compression spring;

[0094] 80. Cover plate; 801. First slot; 802. Second shaft hole; 803. Arc-shaped hole;

[0095] 90. Tail cover; 91. Second limiting part;

[0096] X—First direction; Y—Second direction; Z—Third direction; R1—First radial direction; R2—Second radial direction. Detailed Implementation

[0097] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0098] The following is combined with Figures 1 to 20 The following describes embodiments of the present invention.

[0099] According to an embodiment of the present invention, a rotary swing mechanism is provided, having intersecting first directions X, second directions Y, and a third direction Z, comprising:

[0100] 10 brush heads;

[0101] The outer casing 20 has a central turntable 21;

[0102] Rotating bracket 30, please refer to Figure 10 As shown, it includes a base 31 and a first lever arm 32. Please refer to [link / reference]. Figure 5 As shown, the base 31 and the central turntable 21 are coaxially arranged; the first lever arm 32 is eccentrically arranged relative to the central turntable 21.

[0103] Shaft 40, please refer to Figure 5 As shown, it is coaxially arranged with the central turntable 21; the end of the rotating shaft 40 and the first lever arm 32 along the third direction Z is connected to the brush head 10;

[0104] The fixing clip 50 has a first groove 501 extending along the second direction Y and a second groove 502 extending along the first direction X; please combine them together. Figure 4 As shown, the rotating shaft 40 is disposed in the first groove 501; the first lever arm 32 is disposed in the second groove 502;

[0105] The slide rod 60 has one end connected to the fixed clamp 50 along the second direction Y; the slide rod 60 is used to drive the fixed clamp 50 to reciprocate linearly along the second direction Y under the action of external force and / or action, so that the fixed clamp 50 drives the rotating bracket 30 to swing back and forth in the circumference relative to the central turntable 21.

[0106] It should be noted that, please refer to... Figure 1 and Figure 14 As shown, in the text, "first direction X" refers to the width direction of the second locking portion 61 of the slide rod 60; "second direction Y" refers to the length direction of the slide rod 60; and "third direction Z" refers to the thickness direction of the slide rod 60. Please refer to these descriptions together. Figure 2 and Figure 8 As shown, "first radial R1" in the text refers to the radial direction of the central turntable 21; "second radial R2" in the text refers to the radial direction of the first shaft segment 62 and / or the second shaft segment 63 of the slide rod 60.

[0107] The rotary swing mechanism provided by this utility model, during operation, please refer to... Figure 5 As shown, the slide rod 60 reciprocates linearly along the second direction Y. When the slide rod 60 reciprocates linearly under the action of an external force, it drives the fixing clip 50 to reciprocate linearly along the second direction Y. Please combine this with... Figure 4 and Figure 18 As shown, during the reciprocating linear movement of the fixed clamp 50 along the second direction Y, the fixed clamp 50 drives the first lever arm 32 to oscillate around the central turntable 21 as the rotation center, thereby driving the brush head 10 to oscillate in a rotary manner through the first lever arm 32; through this design, the rotary oscillation effect of the brush head is achieved with a simple combination structure of slide bar-fixed clamp-rotating bracket.

[0108] Further, please see Figure 10 As shown, the rotating bracket 30 also includes a second lever arm 33, which is eccentrically positioned relative to the central turntable 21. The second lever arm 33 is used to cooperate with the rotating shaft 40 and the first lever arm 32 and connect to the brush head 10, thereby improving the stability of the brush head 10 during installation and operation.

[0109] In some embodiments, see Figure 12 As shown, the fixing member 50 includes a chuck body 51 and a first locking part 52; a first groove 501 and a second groove 502 are formed through the chuck body 51; the first locking part 52 is provided on the side of the chuck body 51 facing the slide rod 60 along the third direction Z.

[0110] Please see Figure 14 As shown, the slide bar 60 has a second locking part 61 at one end near the fixing member 50 along the second direction Y. Please connect them together. Figure 4 and Figure 18 As shown, the second snap-fit ​​part 61 snaps into the first snap-fit ​​part 52.

[0111] By forming a first groove 501 and a second groove 502 through the chuck body 51, the first groove 501 extends along the second direction Y, thereby avoiding interference with the rotating shaft 40 during movement; the second groove 502 extends along the first direction X, thereby avoiding interference with the first lever arm 32 during movement.

[0112] During the assembly process, the rotating bracket 30 is first placed inside the first mounting cavity 201, and the base 31 and the central turntable 21 are coaxially arranged. Then, the slide rod 60 is inserted from the second mounting cavity 202 into the first mounting cavity 201. Then, the fixing clip 50 is placed inside the first mounting cavity 201, and the first snap-fit ​​part 52 and the second snap-fit ​​part 61 are snapped together, thereby realizing the connection between the fixing clip 50 and the slide rod 60, so that the slide rod 60 drives the fixing clip 50 to reciprocate linearly along the second direction Y.

[0113] In some embodiments, see Figure 13 As shown, the first locking part 52 includes a first bone position 521, a second bone position 522 and a third bone position 523. The first bone position 521 is located on one side of the chuck body 51 along the first direction X, and the second bone position 522 and the third bone position 523 are located on the other side of the chuck body 51 along the first direction X. The second bone position 522 and the third bone position 523 are arranged at intervals relative to each other along the second direction Y.

[0114] The second snap-fit ​​part 61 is provided with slots that are adapted to the first bone position 521, the second bone position 522 and the third bone position 523.

[0115] Specifically, please see Figure 14 As shown, the second snap-fit ​​portion 61 is provided with a first slot 611, a second slot 612 and a third slot 613 extending along the third direction Z. The first slot 611 is provided on one side of the second snap-fit ​​portion 61 along the first direction X, and the second slot 612 and the third slot 613 are provided on the other side of the second snap-fit ​​portion 61 along the first direction X.

[0116] The first bone position 521 is engaged with the first slot 611, the second bone position 522 is engaged with the second slot 612, and the third bone position 523 is engaged with the third slot 613.

[0117] During assembly, when the first snap-fit ​​part 52 and the second snap-fit ​​part 61 snap together, after the rib and the slot are aligned along the third direction Z, the fixing clip 50 only needs to be pressed along the third direction Z towards the second snap-fit ​​part 61. This causes the first rib 521 to snap into the first slot 611, the second rib 522 to snap into the second slot 612, and the third rib 523 to snap into the third slot 613, thereby achieving the connection between the fixing clip 50 and the slide rod 60, making assembly more convenient.

[0118] In some embodiments, see Figure 14 As shown, a third groove 614 is provided through the second snap-fit ​​portion 61. The third groove 614 extends along the second direction Y and is positioned opposite to the first groove 501 along the third direction Z.

[0119] By providing a third groove 614 through the second locking part 61, the rotating shaft 40 is avoided, thus preventing interference with the rotating shaft 40 during movement.

[0120] In some embodiments, see Figure 3 As shown, the outer casing 20 includes a first casing 22 and a second casing 23;

[0121] Please see Figure 6 and Figure 7 As shown, the first housing 22 includes a bottom wall 221 and a first side peripheral wall 222 extending from the peripheral edge of the bottom wall 221 in a direction away from the bottom wall 221 along a third direction Z. The first side peripheral wall 222 and the bottom wall 221 together enclose a first mounting cavity 201. The central turntable 21, the rotating bracket 30 and the fixing clip 50 are disposed in the first mounting cavity 201.

[0122] See also Figure 6 As shown, the second housing 23 includes a second side peripheral wall 231, which encloses a second mounting cavity 202, which is connected to the first mounting cavity 201; the slide rod 60 is disposed in the second mounting cavity 202.

[0123] The first mounting cavity 201 can be used to install the rotating bracket 30 and the fixing clip 50, and the second mounting cavity 202 can be used to install the slide rod 60.

[0124] In some embodiments, the first housing 22 is provided with a first mounting port 203 at the end of the third direction Z away from the bottom wall 221;

[0125] The second housing 23 is provided with a second mounting port 204 at the end away from the first housing 22 along the second direction Y;

[0126] Please see Figure 5 As shown, the rotary swing mechanism also includes a cover plate 80 and a tail cover 90. The cover plate 80 is installed at the first mounting port 203, and the tail cover 90 is installed at the second mounting port 204.

[0127] By covering the first mounting port 203 with a cover plate 80, the rotating bracket 30 and the fixing clip 50 in the first mounting cavity 201 are limited in the third direction Z, so as to prevent the rotating bracket 30 and the fixing clip 50 from shifting during the movement. By covering the second mounting port 204 with a tail cover 90, the sliding rod 60 in the second mounting cavity 202 is limited in the second direction Y, so as to prevent the sliding rod 60 from detaching from the second housing 23 during the movement.

[0128] In some embodiments, see Figure 11 As shown, the base 31 has a circular hole 311 through it; the end of the base 31 facing the bottom wall 221 is provided with a first recess 312;

[0129] Please see Figure 2 As shown, the central turntable 21 extends from the bottom wall 221 along the third direction Z towards the first mounting port 203; please refer to Figure 7 As shown, the central turntable 21 includes a first frustum 211 and a second frustum 212, which should be considered together. Figure 5 As shown, the first frustum 211 is housed within the circular hole 311, and the second frustum 212 is housed within the first recess 312.

[0130] By embedding the first frustum 211 inside the circular hole 311, the base 31 and the central turntable 21 are coaxially arranged, thereby allowing the rotating bracket 30 to rotate around the central turntable 21 as the rotation center. By embedding the second frustum 212 inside the first recess 312, not only can the rotating bracket 30 be limited to ensure stable rotation of the rotating bracket 30 relative to the central turntable 21, but it also helps to save space occupied by the rotating bracket 30 in the first mounting cavity 201 and improve space utilization.

[0131] In some embodiments, see Figure 2 and Figure 7 As shown, the first housing 22 has a second recess 223 at one end near the first mounting port 203; the cover plate 80 is built into the second recess 223;

[0132] The first housing 22 is also provided with a first mounting platform 224, which is formed by extending from the first side peripheral wall 222 along the first radial direction R1 toward the direction close to the first mounting cavity 201;

[0133] Please see Figure 17 As shown, the cover plate 80 is provided with a first slot 801, which is engaged with the first slot platform 224.

[0134] By embedding the cover plate 80 inside the second recess 223 and engaging the first slot 801 with the first slot 224, the cover plate 80 and the first housing 22 are detachably and fixedly connected, facilitating disassembly, assembly and maintenance.

[0135] In some embodiments, see Figure 7 As shown, the central rotary table 21 has a first shaft hole 213 along the third direction Z; please refer to Figure 17 As shown, a second shaft hole 802 is provided through the cover plate 80 along the third direction Z, and the second shaft hole 802 is arranged opposite to the first shaft hole 213;

[0136] One end of the rotating shaft 40 along the third direction Z is fixedly installed in the first shaft hole 213, and the other end is installed in the second shaft hole 802.

[0137] One end of the rotating shaft 40 along the third direction Z is fixedly installed in the first shaft hole 213. By providing a second shaft hole 802 on the cover plate 80, the rotating shaft 40 is positioned through the second shaft hole 802 to prevent the rotating shaft 40 from loosening during movement.

[0138] In some embodiments, see Figure 17 As shown, the cover plate 80 is also provided with an arc-shaped hole 803, which extends along the movement trajectory of the first lever arm 32 and is used to avoid the first lever arm 32.

[0139] By setting an arc-shaped hole 803 on the cover plate 80, the movement trajectory of the first lever arm 32 is avoided through the arc-shaped hole 803; at the same time, the cover plate 80 is engaged with the first locking platform 224 through the first locking groove 801, which prevents the cover plate 80 from rotating in the second sink groove 223, thereby preventing the arc-shaped hole 803 from deviating from the set position and preventing the cover plate 80 from interfering with the first lever arm 32.

[0140] In some embodiments, see Figure 6 As shown, the second housing 23 has a first limiting part 232, which is provided at one end of the second housing 23 near the first housing 22 along the second direction Y. The first limiting part 232 is formed by extending from the inner peripheral wall of the second housing 23 along the second radial direction R2 toward the direction near the second mounting cavity 202.

[0141] Please see Figure 5 As shown, the tail cover 90 has a second limiting portion 91, which is formed by extending from the inner peripheral wall of the tail cover 90 along the second radial direction R2 toward the direction close to the second mounting cavity 202.

[0142] Please see Figure 5 and Figure 14 As shown, the slide bar 60 also includes a first shaft segment 62 and a second shaft segment 63, with the first shaft segment 62 located at one end of the second shaft segment 63 near the second engaging portion 61; please refer to the diagram. Figure 16 As shown, the first shaft segment 62 has a first end face 621 at one end along the second direction Y near the second snap-fit ​​portion 61, and the first end face 621 is disposed opposite to the first limiting portion 232; the second shaft segment 63 has a second end face 631 at one end along the second direction Y away from the first shaft segment 62, and the second end face 631 is disposed opposite to the second limiting portion 91.

[0143] Within the second mounting cavity 202, the first limiting part 232 and the second limiting part 91 are separated by a first distance W1 along the second direction Y, and the first end face 621 and the second end face 631 are separated by a second distance W2. The absolute value of the difference between the first distance W1 and the second distance W2 is the maximum stroke of the slide rod 60.

[0144] By providing a first limiting part 232 on the second housing 23 and a second limiting part 91 on the tail cover 90, the slide rod 60 is limited along the second direction Y. When the first end face 621 of the slide rod 60 abuts against the first limiting part 232, the slide rod 60 moves to its maximum stroke. When the second end face 631 of the slide rod 60 abuts against the second limiting part 91, the slide rod 60 moves to its initial position.

[0145] In some embodiments, the rotary swing mechanism further includes a compression spring 70, which is coaxially arranged with the slide bar 60; the compression spring 70 is used to push the slide bar 60 and keep the slide bar 60 tending to move away from the central turntable 21 along the second direction Y.

[0146] When the slide rod 60 moves toward the center turntable 21 under the action of external force, the slide rod 60 pushes the compression spring 70 to compress and store force. When the slide rod 60 and the center turntable 21 reach the set closest distance, the external force is removed or begins to act in the opposite direction. The compression spring 70 releases pressure and pushes the slide rod 60 to move away from the center turntable 21 until the slide rod 60 begins to perform the next cycle of reciprocating linear movement. Thus, the slide rod 60 drives the fixed clamp 50 to reciprocate linearly along the second direction Y.

[0147] In some embodiments, see Figure 16 As shown, the diameter of the second shaft segment 63 is larger than the diameter of the first shaft segment 62; the second shaft segment 63 has a third end face 632 at the end near the first shaft segment 62 along the second direction Y; please refer to Figure 6 and Figure 8 As shown, the first limiting part 232 has a fourth end face 2321 at one end facing the tail cover 90 along the second direction Y;

[0148] Please seeFigure 5 As shown, the compression spring 70 is sleeved on the first shaft section 62. One end of the compression spring 70 abuts against the third end face 632, and the other end abuts against the fourth end face 2321.

[0149] In the initial state, one end of the compression spring 70 abuts against the third end face 632 and the other end abuts against the fourth end face 2321, thereby pre-compressing the compression spring 70 in the second mounting cavity 202, ensuring that the slide rod 60 maintains the trend of moving away from the central turntable 21 along the second direction Y, and ensuring that the slide rod 60 can return to the initial position after moving to the maximum stroke.

[0150] In some embodiments, see Figure 9 As shown, the first limiting part 232 has two first limiting surfaces 2322, which are arranged at a relative interval along the third direction Z;

[0151] Please see Figure 14 and Figure 16 As shown, the slide bar 60 also includes a third shaft segment 64, which is located between the second locking portion 61 and the first shaft segment 62. The third shaft segment 64 has two second limiting surfaces 641 that are arranged opposite each other along the third direction Z. Please refer to the diagram for details. Figure 5 As shown, each second limiting surface 641 is disposed opposite to the first limiting surface 2322 along the third direction Z, and the second limiting surface 641 and the first limiting surface 2322 are slidably connected.

[0152] The slide rod 60 is slidably connected to the first limiting surface 2322 by the second limiting surface 641, thereby limiting the slide rod 60 and preventing it from jumping along the third direction Z during the movement. At the same time, it prevents the slide rod 60 from deflecting and ensures that the slide rod 60 moves smoothly back and forth in a straight line along the second direction Y in the second mounting cavity 202.

[0153] In some embodiments, see Figure 9 As shown, the first limiting part 232 also has two third limiting surfaces 2323, which are arranged at intervals relative to each other along the first direction X;

[0154] Please see Figure 14 As shown, the second locking portion 61 has two fourth limiting surfaces 615 arranged opposite each other along the first direction X. The fourth limiting surfaces 615 and the third limiting surface 2323 are arranged opposite each other along the first direction X. Please refer to both. Figure 4 As shown, the fourth limiting surface 615 is slidably connected to the third limiting surface 2323.

[0155] The slide rod 60 is slidably connected to the third limiting surface 2323 by the fourth limiting surface 615, thereby limiting the slide rod 60 and preventing it from jumping or deviating along the first direction X during the movement, so as to ensure that the slide rod 60 moves smoothly back and forth in a straight line along the second direction Y in the second mounting cavity 202.

[0156] In some embodiments, please combine Figure 19 and Figure 20 As shown, the brush head 10 has a first mounting hole 101 and a second mounting hole 102 on one side of the rotating bracket 30 along the third direction Z; the end of the rotating shaft 40 away from the central turntable 21 is built into the first mounting hole 101, and the end of the first lever arm 32 away from the base 31 is built into the second mounting hole 102.

[0157] By fixing one end of the rotating shaft 40 away from the central turntable 21 in the first mounting hole 101, and fixing one end of the first lever arm 32 away from the base 31 in the second mounting hole 102, a fixed connection between the rotating bracket 30 and the brush head 10 is achieved. Then, the rotating bracket 30 drives the brush head 10 to rotate around the rotating shaft 40 as the rotation center.

[0158] According to an embodiment of the present invention, another aspect provides an electric toothbrush, comprising: a motor, and a rotary swing mechanism as described above; the motor is connected to a slide bar 60 in a transmission manner, and the motor is used to drive the slide bar 60 to reciprocate linearly along a second direction Y.

[0159] It should be noted that the specific connection between the motor and the slide bar 60 will not be described in detail here.

[0160] The electric toothbrush provided in this embodiment, by adopting the above-mentioned rotary oscillation mechanism, can achieve the rotary oscillation effect of the brush head with a simple combination structure of slide bar-fixed clip-rotating bracket.

[0161] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A swing mechanism having a first direction (X), a second direction (Y) and a third direction (Z) intersecting two by two, characterized in that, The utility model relates to a brush head (10);The shell (20) has the central rotating platform (21);Rotary support (30) including base (31) and first force arm (32), the base (31) is coaxial with the central rotating platform (21) arrangement;First force arm (32) eccentricity is arranged relative to the central rotating platform (21);Rotary shaft (40) is coaxial with the central rotating platform (21) arrangement;Rotary shaft (40) and first force arm (32) along one end of the third direction (Z) are connected with the brush head (10); Fixing clamp piece (50) has first recess (501) and second recess (502);Rotary shaft (40) is arranged in first recess (501);First force arm (32) is arranged in second recess (502); Slide bar (60) is connected with fixing clamp piece (50) along one end of the second direction (Y);Slide bar (60) is used for driving fixing clamp piece (50) reciprocating linear motion along the second direction (Y) under the action of external force, so that fixing clamp piece (50) drives rotary support (30) reciprocating swing relative to the central rotating platform (21) circumferentially. Fixing clamp piece (50) includes chuck body (51) and first clamping part (52);First recess (501) and second recess (502) are formed through chuck body (51);First clamping part (52) is arranged on the side of chuck body (51) along the third direction (Z) towards slide bar (60); Second clamping part (61) is arranged on one end of slide bar (60) along the second direction (Y) close to fixing clamp piece (50), and second clamping part (61) is clamped with first clamping part (52). First clamping part (52) includes first bone site (521), second bone site (522) and third bone site (523), first bone site (521) is arranged on one side of chuck body (51) along the first direction (X), second bone site (522) and third bone site (523) are arranged on the other side of chuck body (51) along the first direction (X), and second bone site (522) and third bone site (523) are arranged opposite and spaced apart along the second direction (Y); Second clamping part (61) is provided with groove site matched with first bone site (521), second bone site (522) and third bone site (523).

2. The gyroscopic swing mechanism of claim 1, wherein, Third recess (614) is arranged through second clamping part (61), third recess (614) extends along the second direction (Y), and third recess (614) is arranged opposite first recess (501) along the third direction (Z). The shell (20) includes first shell (22) and second shell (23); 3. The gyroscopic swing mechanism of claim 2, wherein, ​ ​ 4. The gyroscopic swing mechanism of claim 2, wherein, ​ 5. The nutating mechanism of claim 4, wherein ​ The first shell (22) includes a bottom wall (221) and a first side peripheral wall (222) extending from a peripheral edge of the bottom wall (221) in the third direction (Z) away from the bottom wall (221); the first side peripheral wall (222) and the bottom wall (221) together enclose a first mounting cavity (201); the center turntable (21), the rotating support (30) and the fixed clamping piece (50) are arranged in the first mounting cavity (201); The second shell (23) includes a second side peripheral wall (231) enclosing a second mounting cavity (202) in communication with the first mounting cavity (201); the slide rod (60) is arranged in the second mounting cavity (202).

6. The nutating mechanism of claim 5, wherein The first shell (22) is provided with a first mounting opening (203) at one end thereof away from the bottom wall (221) in the third direction (Z); The second shell (23) is provided with a second mounting opening (204) at one end thereof away from the first shell (22) in the second direction (Y); The oscillating mechanism further includes a cover plate (80) and a tail cover (90); the cover plate (80) is arranged at the first mounting opening (203); and the tail cover (90) is arranged at the second mounting opening (204).

7. The gyroscopic swing mechanism of claim 6, wherein, The base (31) has a circular hole (311) extending therethrough; the base (31) is provided with a first recess (312) at one end thereof towards the bottom wall (221); The center turntable (21) extends from the bottom wall (221) in the third direction (Z) towards the first mounting opening (203); the center turntable (21) includes a first circular platform (211) and a second circular platform (212); the first circular platform (211) is arranged in the circular hole (311); and the second circular platform (212) is arranged in the first recess (312).

8. The gyroscopic swing mechanism of claim 6, wherein, The first shell (22) is provided with a second recess (223) at one end thereof towards the first mounting opening (203); and the cover plate (80) is arranged in the second recess (223); The first shell (22) is further provided with a first clamping platform (224) extending from the first side peripheral wall (222) in a first radial direction (R1) towards the first mounting cavity (201); The cover plate (80) is provided with a first clamping groove (801) engaged with the first clamping platform (224).

9. The gyroscopic swing mechanism of claim 8, wherein, The center turntable (21) is provided with a first shaft hole (213) extending in the third direction (Z); the cover plate (80) is provided with a second shaft hole (802) extending in the third direction (Z); and the second shaft hole (802) is arranged opposite to the first shaft hole (213); One end of the rotating shaft (40) is fixedly arranged in the first shaft hole (213) in the third direction (Z); and the other end is arranged in the second shaft hole (802).

10. The gyroscopic swing mechanism of claim 6, wherein, An arc-shaped hole (803) is further arranged on the cover plate (80) and used for avoiding the first force arm (32).

11. The gyroscopic swing mechanism of claim 6, wherein, The second shell (23) has a first limiting portion (232) arranged at one end of the second shell (23) close to the first shell (22) along the second direction (Y), and formed by extending an inner circumferential wall of the second shell (23) along a second radial direction (R2) towards the second mounting cavity (202); The tail cover (90) has a second limiting portion (91) formed by extending an inner circumferential wall of the tail cover (90) along a second radial direction (R2) towards the second mounting cavity (202); The slide rod (60) further includes a first shaft segment (62) and a second shaft segment (63), the first shaft segment (62) is arranged at one end of the second shaft segment (63) close to the second clamping portion (61), the first shaft segment (62) has a first end face (621) at one end close to the second clamping portion (61) along the second direction (Y), the first end face (621) is arranged opposite to the first limiting portion (232), the second shaft segment (63) is provided with a second end face (631) at one end away from the first shaft segment (62) along the second direction (Y), and the second end face (631) is arranged opposite to the second limiting portion (91); The first limiting portion (232) and the second limiting portion (91) have a first distance (W1) along the second direction (Y), the first end face (621) and the second end face (631) have a second distance (W2), and the absolute value of the difference between the first distance (W1) and the second distance (W2) is the maximum stroke of the slide rod (60).

12. The gyroscopic swing mechanism of claim 11, wherein, The swing mechanism further includes a compression spring (70) coaxially arranged with the slide rod (60), the compression spring (70) is used for pushing the slide rod (60) and keeping the slide rod (60) away from the center turntable (21) along the second direction (Y).

13. The gyroscopic swing mechanism of claim 12, wherein, The second shaft segment (63) has a diameter greater than that of the first shaft segment (62), the second shaft segment (63) is provided with a third end face (632) at one end close to the first shaft segment (62) along the second direction (Y), and the first limiting portion (232) is provided with a fourth end face (2321) at one end towards the tail cover (90) along the second direction (Y); The compression spring (70) is sleeved on the first shaft segment (62), one end of the compression spring (70) abuts against the third end face (632), and the other end abuts against the fourth end face (2321).

14. The gyroscopic swing mechanism of claim 12, wherein, The first limiting portion (232) has two first limiting faces (2322) arranged opposite to each other along the third direction (Z). The slide rod (60) further comprises a third shaft section (64) disposed between the second clamping part (61) and the first shaft section (62); the third shaft section (64) has two second limiting surfaces (641) oppositely arranged along the third direction (Z), each of the second limiting surfaces (641) is oppositely arranged along the third direction (Z) with the first limiting surface (2322), and the second limiting surfaces (641) are in sliding connection with the first limiting surface (2322).

15. The gyroscopic swing mechanism of claim 12, wherein, The first limiting part (232) further has two third limiting surfaces (2323) oppositely and spaced apart along the first direction (X); The second clamping part (61) has two fourth limiting surfaces (615) oppositely arranged along the first direction (X), the fourth limiting surfaces (615) are oppositely arranged along the first direction (X) with the third limiting surfaces (2323), and the fourth limiting surfaces (615) are in sliding connection with the third limiting surfaces (2323).

16. The oscillating pendulum mechanism according to any one of claims 1-15, characterized in that The brush head (10) is provided with a first mounting hole (101) and a second mounting hole (102) on one side of the rotating support (30) along the third direction (Z); the rotating shaft (40) is built-in in the first mounting hole (101) at an end away from the center rotating table (21), and the first force arm (32) is built-in in the second mounting hole (102) at an end away from the base table (31).

17. An electric toothbrush, characterized by Comprise: A motor and the cycloidal mechanism according to any one of claims 1-16; the motor is in driving connection with the slide rod (60).

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