Toothbrush with electric rotating brush head

Abstract

An electric toothbrush with a rotary brush head relates to the technical field of electric toothbrushes. Comprising a shell, a brush disc and a transmission sleeve, through structural design improvement of the second arc-shaped tooth part and the first arc-shaped tooth part between the brush disc and the transmission sleeve, the use strength of the second arc-shaped tooth part is improved, the machining difficulty is reduced, and the connection reliability of the second arc-shaped tooth part and the transmission sleeve is improved. Meanwhile, the multi-hollow arc-shaped groove design is adopted in the shell, during tooth brushing, heat generated by meshing of the first arc-shaped tooth part and the second arc-shaped tooth part is rapidly dissipated through the arc-shaped grooves, moisture generated in the tooth brushing process enters the space between the first arc-shaped tooth part and the second arc-shaped tooth part, heat generated by friction between the first arc-shaped tooth part and the second arc-shaped tooth part is reduced, and the tooth brushing effect is improved. And the service lives of the brush disc and the transmission sleeve are further prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric toothbrush, especially electric rotary brush head toothbrush. BACKGROUND

[0002] Electric toothbrush through the quick rotation or vibration of motor core, make the brush head produce high frequency vibration, instantaneously decompose into fine foam toothpaste, deep clean the gap, at the same time, the tremor of bristle can promote blood circulation of oral cavity, have the massage effect to gingival tissue, therefore, electric toothbrush is more and more by the consumer's favor. Distinguish from the acoustic wave type electric toothbrush, rotary electric toothbrush is cleaned through the way of the rotating plane of the toothbrush's hair planting disc, the common rotary electric toothbrush is the electric toothbrush series of oral b (oral b) company, the existing rotary electric toothbrush, through setting up a rotary motor does unidirectional rotation or limit angle reciprocating rotation, connect a conversion mechanism, convert the vertical direction axial movement of motor into the rotation of hair planting disc in another direction.

[0003] As one patent document of application No. 202322837455.6 authorized and announced on August 30, 2024, a rotary electric toothbrush toothbrush head is disclosed, including a shell, a hair planting disc and a transmission rod, the hair planting disc is provided with an engaging part, the engaging part includes a first engaging piece; the transmission rod is provided with a second engaging piece engaging with the first engaging piece at one end close to the hair planting disc, there is a gap between the first engaging piece and the second engaging piece, and the engaging surfaces between the first engaging piece and the second engaging piece are arc surfaces, by setting the second engaging piece swinging, the deflection of the first engaging piece is driven based on the engaging state, and the rotation of the hair planting disc is realized. The second engaging piece of the case is in L-shaped structure, one end is connected with the end face of the transmission rod, and the other end extends into the side of the toothed part and engages with the first engaging piece; after long-term use, the second engaging piece often breaks and wears too much, which reduces the service life of the electric toothbrush. Therefore, how to improve the service life of the brush disc part is a technical problem to be solved in the case. UTILITY MODEL CONTENTS

[0004] The utility model provides a compact structure, simple and convenient processing, improve the service life's electric rotary brush head toothbrush for above -mentioned problem.

[0005] The technical scheme of the utility model is:

[0006] The electric rotary brush head toothbrush comprises:

[0007] The shell is provided with a brush head mounting position on the front side of the cleaning end, and a plurality of arc-shaped grooves are arranged on the rear side and communicated with the brush head mounting position; an inner cavity is arranged in the shell and communicated with the brush head mounting position;

[0008] The brush disc is rotatably arranged on the brush head mounting position through a connecting boss in the middle of the back surface, a first arc-shaped tooth part is arranged below the outer surface of the connecting boss and faces the arc-shaped slot, and a limiting part is fixedly connected above the first arc-shaped tooth part;

[0009] The transmission sleeve is hingedly arranged in the inner cavity of the shell, a second arc-shaped tooth part is arranged below the front end of the transmission sleeve and engages with the first arc-shaped tooth part, and the brush disc is reciprocally rotated through swinging of the second arc-shaped tooth part.

[0010] Specifically, the rear side edge of the cleaning end is in an arc-shaped structure.

[0011] Specifically, the limiting part is in a semi-annular structure, and limiting corners extending towards the center are arranged at both ends of the limiting part.

[0012] The shell is internally provided with a connecting column for connecting the brush disc, the middle of the connecting column is provided with a connecting hole, and the outer surface of the connecting column is provided with a limiting table matched with the limiting part.

[0013] Specifically, the connecting column is fixedly arranged in the shell and connected with the shell through a plurality of reinforcing plates.

[0014] Specifically, at least one pair of arc-shaped slots are symmetrically arranged at the side of the limiting table.

[0015] Specifically, at least one arc-shaped slot corresponds to the second arc-shaped tooth part.

[0016] Specifically, the front end of the transmission sleeve is provided with a hinged rod above the front end.

[0017] The shell is internally provided with a hinged hole matched with the hinged rod.

[0018] Specifically, the front end of the transmission sleeve is in a plane below the hinged rod.

[0019] The second arc-shaped tooth part is arranged below the plane.

[0020] Specifically, the tail end of the transmission sleeve is provided with a plug-in hole matched with the plug-in part.

[0021] The tail end of the transmission sleeve is provided with a rectangular gap in communication with the plug-in hole, a tongue fixedly connected with the transmission sleeve is arranged at the rectangular gap, and a pressing table matched with the upper limiting slot of the plug-in part is arranged below the tongue.

[0022] Specifically, the front surface of the brush disc is provided with a plurality of fixedly connected bristles.

[0023] The utility model discloses a toothbrush, including shell, brush disc and transmission sleeve, through the brush disc and transmission sleeve between the second arc tooth part and the first arc tooth part structure design improvement, improve the second arc tooth part use intensity, and reduce the processing difficulty, has improved the second arc tooth part and transmission sleeve connection reliability. Simultaneously adopts the arc groove design of many hollows on the shell, when brushing teeth, the heat that the first arc tooth part and the second arc tooth part meshing produce is sent out fast through the arc groove, and the moisture produced in the toothbrushing process enters between the first arc tooth part and the second arc tooth part, reduced the heat of friction between the first arc tooth part and the second arc tooth part, further improved the service life of brush disc and transmission sleeve. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the appearance three-dimensional structure schematic diagram of the utility model,

[0025] Figure 2 It is the transmission sleeve connection state three-dimensional structure schematic diagram,

[0026] Figure 3 It is Figure 2 The brush disc back three-dimensional structure schematic diagram of area A in,

[0027] Figure 4 It is the limiting portion and limiting platform setting position structure schematic diagram,

[0028] Figure 5 It is the plug-in portion connection state structure schematic diagram,

[0029] Figure 6 It is Figure 5 The enlarged structure schematic diagram of area B,

[0030] Figure 7 It is the tongue pressing three-dimensional structure schematic diagram,

[0031] Figure 8 It is the connecting column three-dimensional structure schematic diagram,

[0032] In the drawing, 100 is the shell, 110 is the brush head installation position, 111 is the connecting column, 1111 is the limiting platform, 120 is the arc groove,

[0033] 200 is the brush disc, 210 is the connecting boss, 220 is the first arc tooth part, 230 is the limiting portion,

[0034] 300 is the transmission sleeve, 310 is the articulated rod, 320 is the tongue pressing, 330 is the second arc tooth part,

[0035] 400 is the motor, 410 is the plug-in portion. DETAILED DESCRIPTION

[0036] The embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are used only for explaining the present application, and cannot be understood as a limitation of the present application.

[0037] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", "vertical", "horizontal" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0038] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0039] Reference is made below Figures 1-8 to describe the present application;

[0040] The electric rotating brush head toothbrush comprises:

[0041] The shell 100 is provided with a brush head mounting position 110 on the front side of the cleaning end, and a plurality of arc-shaped grooves 120 in communication with the brush head mounting position are arranged on the rear side, and the rear side edge is in an arc-shaped structure, which improves the comfort when contacting the oral cavity; the shell 100 is internally provided with an inner cavity in communication with the brush head mounting position 110, for mounting a motor and a transmission sleeve 300, and the motor is sealingly and fixedly mounted in the holding end of the shell 100;

[0042] The brush disc 200 is rotatably arranged on the brush head mounting position 110 through a connecting boss 210 in the middle of the back surface; a first arc-shaped tooth portion 220 with an opening facing the direction of the arc-shaped groove 120 is arranged below the outer circumferential surface of the connecting boss 210, and a limiting portion 230 is fixedly connected above the connecting boss 210; a plurality of fixedly connected bristles are arranged on the front surface of the brush disc 200.

[0043] The transmission sleeve 300 is hingedly arranged in the inner cavity of the shell 100; the front end of the transmission sleeve is provided with a second arc-shaped tooth portion 330 engaged with the first arc-shaped tooth portion 220, and the reciprocating rotation of the brush disc 200 is realized through the swing of the second arc-shaped tooth portion 330.

[0044] As Figure 7 indicated, the second arc-shaped tooth portion 330 is directly formed at the front end of the transmission sleeve 300, as Figure 3 indicated, the second arc-shaped tooth portion 330 directly engages with the first arc-shaped tooth portion 220 below when swinging, and the forming is simple, and the connection reliability of the second arc-shaped tooth portion 330 and the transmission sleeve 300 is improved. During brushing, the heat generated by the engagement of the first arc-shaped tooth portion 220 and the second arc-shaped tooth portion 330 is quickly dissipated through the arc-shaped grooves 120, and the water generated during the brushing process enters between the first arc-shaped tooth portion 220 and the second arc-shaped tooth portion 330, reducing the heat generated by the friction between the first arc-shaped tooth portion 220 and the second arc-shaped tooth portion 330, and further improving the service life of the brush disc 200 and the transmission sleeve 300.

[0045] In order to further improve the efficiency of heat dissipation and water intake, at least one pair of arc-shaped grooves 120 is symmetrically arranged on the side of the limiting table 1111. At least one arc-shaped groove 120 corresponds to the second arc-shaped tooth portion 330.

[0046] As Figure 3 indicated, the limiting portion 230 is in a semi-ring structure, and the two ends are respectively provided with limiting angles extending to the center direction.

[0047] The shell 100 is provided with a connecting column 111 for connecting the brush disc 200, and the connecting column 111 is provided with a connecting hole in the middle; the outer circular surface of the connecting column 111 is provided with a limiting table 1111 matched with the limiting portion.

[0048] The connecting column 111 is fixedly arranged in the shell 100 and connected with the shell 100 through a plurality of reinforcing plates.

[0049] The front end of the transmission sleeve 300 is provided with a hinged rod 310; the shell 100 is provided with a hinged hole matched with the hinged rod 310.

[0050] The front end of the transmission sleeve 300 is provided with a hinged rod 310; the shell 100 is provided with a hinged hole matched with the hinged rod 310.

[0051] The cross-sectional width of the transmission sleeve 300 is in a structure of small front and large rear, and the tail end is provided with a plug-in hole matched with the plug-in portion 410; the plug-in portion 410 is in transmission connection with the motor 400.

[0052] The tail end of the transmission sleeve 300 is provided with a rectangular gap in communication with the plug-in hole, and the rectangular gap is provided with a tongue depressor 320 fixedly connected with the transmission sleeve 300, and the lower side of the tongue depressor 320 is provided with a pressing table matched with the upper limiting groove of the plug-in part 410. After the transmission sleeve 300 is sleeved into the shell 100, the pressing table is limited in the limiting groove, so as to realize the connection between the motor 400 and the transmission sleeve 300.

[0053] Further optimization is made to the arc-shaped groove 120, and the arc-shaped groove 120 is provided with a detachable elastic block fixedly connected therewith. The outer surface of the elastic block is provided with a plurality of arc-shaped protrusions uniformly arranged, and a plurality of water permeable holes are arranged between the arc-shaped protrusions. During tooth brushing, the arc-shaped protrusions are attached to the inner side wall of the oral cavity, which not only improves the comfort of tooth brushing, but also cleans the inner side wall of the oral cavity.

[0054] For the content disclosed in the present case, the following points need to be explained:

[0055] 1. The embodiment disclosed in the present case only relates to the structure involved in the embodiment disclosed in the present case, and other structures can refer to the usual design.

[0056] 2. In the case of no conflict, the embodiments disclosed in the present case and the features in the embodiments can be combined to obtain new embodiments.

[0057] The above is only a specific embodiment disclosed in the present case, but the protection scope of the present disclosure is not limited thereto, and the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. An electrically powered rotary brush head toothbrush characterised in that, The utility model relates to a cleaning device, including: A shell (100) is provided with a brush head mounting position (110) on the front side of the cleaning end, and a plurality of arc-shaped grooves (120) are arranged on the rear side and communicated with the brush head mounting position (110); the inner cavity of the shell (100) is communicated with the brush head mounting position (110); A brush disc (200) is rotatably arranged on the brush head mounting position (110) through a connecting boss (210) in the middle of the back surface; a first arc-shaped tooth portion (220) is arranged on the lower surface of the outer circular surface of the connecting boss (210) and opens towards the direction of the arc-shaped groove (120), and a fixedly connected limiting portion (230) is arranged on the upper surface; A transmission sleeve (300) is hingedly arranged in the inner cavity of the shell (100); a second arc-shaped tooth portion (330) is arranged on the lower surface of the front end of the transmission sleeve and engaged with the first arc-shaped tooth portion (220), and the reciprocating rotation of the brush disc (200) is realized through the swinging of the second arc-shaped tooth portion (330).

2. The electric rotary brush head toothbrush according to claim 1, wherein The rear side edge angle of the cleaning end is in an arc-shaped structure.

3. The electric rotary brush head toothbrush according to claim 1, wherein, The limiting portion (230) is in a semi-annular structure, and the two ends are respectively provided with limiting angles extending towards the center; A connecting column (111) for connecting the brush disc (200) is arranged in the shell (100), and a connecting hole is arranged in the middle of the connecting column (111); a limiting table (1111) matched with the limiting portion is arranged on the outer circular surface of the connecting column (111).

4. The electric rotary brush head toothbrush according to claim 3, wherein, The connecting column (111) is fixedly arranged in the shell (100) and connected with the shell (100) through a plurality of reinforcing plates.

5. The electric rotary brush head toothbrush according to claim 3, wherein, At least one pair of arc-shaped grooves (120) are symmetrically arranged on the side of the limiting table (1111).

6. The electric rotary brush head toothbrush according to claim 3, wherein, At least one arc-shaped groove (120) corresponds to the second arc-shaped tooth portion (330).

7. The electrically powered rotary brush head toothbrush according to claim 1, wherein, A hinged rod (310) is arranged on the upper surface of the front end of the transmission sleeve (300); A hinged hole matched with the hinged rod (310) is arranged in the shell (100).

8. The electric rotary brush head toothbrush according to claim 7, wherein, The lower surface of the front end of the transmission sleeve (300) is in a plane; The second arc-shaped tooth portion (330) is arranged below the plane.

9. The electrically powered rotary brush head toothbrush according to claim 1, wherein, An insertion hole matched with the insertion portion is arranged on the tail end of the transmission sleeve (300); A rectangular gap communicated with the insertion hole is arranged on the tail end of the transmission sleeve (300), a tongue (320) fixedly connected with the transmission sleeve (300) is arranged at the rectangular gap, and a pressing table matched with the upper limiting groove of the insertion portion is arranged below the tongue (320).

10. The electric rotary brush head toothbrush according to claim 1, wherein, A plurality of fixedly connected bristles are arranged on the front surface of the brush disc (200).

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