An electric toothbrush

Abstract

The present invention relates to an electric toothbrush, comprising: a support body, an inner brush head, a charging head slot and an end cap, wherein an extension head is provided at the top of the support body and a charging head slot is provided at the bottom; a hollow portion is provided at the top of the extension head, a groove is provided on the outer wall of the extension head along its length direction, an inner brush head rubber ring is provided at the lower part of the outer wall of the inner brush head, and the inner brush head rubber ring abuts between the inner brush head and the outer shell; a protrusion matching the groove on the charging head is provided along the circumference of the inner circumference of the charging head slot, a lock buckle is provided on the outer ring sleeve of the charging head slot, and an end cap is provided on the outer ring sleeve of the lock buckle; a through hole is provided on the end cap, and an extension ring groove matching the extension ring is provided on the circumference of the through hole. The present invention avoids the use of silica gel and reduces the production process; the inner brush head rubber ring and the gasket reduce the vibration and noise caused by the motor to the outer shell; the extension ring groove on the end cap avoids the displacement of the charging head; the waterproof part provided on the end cap avoids the loss of the waterproof part, and improves the comfort of the user.

Description

Technical Field

[0001] The invention relates to an oral cleaning toothbrush, in particular to an electric toothbrush. Background Art

[0002] There are two ways to charge electric toothbrushes: wireless charging and wired charging. Electric toothbrushes that use a DC charger for wired charging are the cheapest, but there are the following problems in the manufacturing process:

[0003] 1. Fixing the motor in the inner brush head has become a big problem. There are currently two methods to fix the motor in the inner brush head: 1. First place the coreless motor directly in the inner brush head, and then squeeze silicone into the inner brush head to bond the bottom of the coreless motor to the silicone and the inner brush head to achieve the purpose of fixing the motor. However, it is difficult to squeeze silicone into the brush head. Workers need to use an air compressor and a glue dispenser to squeeze the silicone in, which is time-consuming and labor-intensive. If the silicone is not adhered to the bottom of the motor, or is only adhered to the motor wire, the motor wire is easy to break during use, causing damage to the electric toothbrush. 2. Place the coreless motor directly into the inner brush head, use an extension head to support the bottom of the motor, and vibrate the motor. This method has the following problems: the extension head is in direct contact with the coreless motor, because the coreless motor is connected to the wire at the bottom, causing the wire interface to be squeezed by the extension head. When the motor vibrates, the wire at the interface is easy to break due to friction with the extension head;

[0004] Second, it is difficult to fix the DC charging head. At present, electric toothbrushes use silicone to fill the entire periphery of the DC charging head to fix the charging head. Manual operation is very troublesome, the bonding is not reliable, and the defective rate is high. In addition, due to the silicone bonding, the silicone needs to be removed when it is repaired, which is too difficult;

[0005] 3. There is also a problem that when the DC charging head is installed in batches, the charging head cannot be positioned in a certain position. As a result, the charging head and the charging hole of the base cannot be perfectly aligned. It often happens that only half of the DC charging head can be aligned with the charging hole of the base, resulting in the charging hole not being blocked by the charging head, which not only causes the electric toothbrush to leak but also the user cannot align the charging head when charging, affecting the user experience;

[0006] 4. The current waterproof function of wired charging adopts a separate waterproof cover. The waterproof cover is opened when charging. Since the waterproof cover and the charging toothbrush are not a whole, the waterproof cover is easy to be lost during use, resulting in waterproofness. Summary of the invention

[0007] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the present invention provides an electric toothbrush.

[0008] The technical solution adopted by the present invention to solve the technical problem is: an electric toothbrush, comprising: a bracket body, an inner brush head, a charging head slot and an end cover, wherein the top of the bracket body is provided with an extension head, and the bottom of the bracket body is provided with a charging head slot;

[0009] An inner brush head is provided on the matching sleeve of the extension head, a motor is provided between the top of the extension head and the inner part of the inner brush head, a hollow part is provided on the inner top of the extension head, and a groove is provided on the outer wall of the extension head along its length direction, the groove is located at the bottom of the hollow part and is connected with the hollow part, a gasket groove is provided between the bottom end of the extension head and the top end of the bracket body, a gasket is provided in the gasket groove, the bottom end of the inner brush head is sleeved in the outer shell, and an inner brush head rubber ring is provided at the lower part of the outer wall of the inner brush head, and the inner brush head rubber ring abuts between the inner brush head and the outer shell;

[0010] A protrusion matching the groove on the charging head is provided along the circumference of the charging head slot, a charging head is provided in the charging head slot, and one end of the charging head extends out of the charging head slot, a lock is provided on the outer ring of the charging head slot, and an end cover is provided on the outer ring of the lock;

[0011] The lock buckle comprises a lock buckle body and an extension ring extending along the inner diameter of one end of the lock buckle body, the inner diameter of the lock buckle body is arranged from small to large from the end with the extension ring to the other end, and the inner diameter of the end of the lock buckle body without the extension ring matches the outer diameter of the charging head slot;

[0012] The end cover is provided with a through hole, and one end of the charging head extending out of the charging head slot is matched and arranged in the through hole, and the circumference of the through hole is provided with an extension ring groove matching the extension ring.

[0013] In a preferred embodiment of the present invention, the end cover comprises an end cover body and a sleeve, the end cover body and the sleeve are integrally formed, the outer ring of the sleeve is circumferentially provided with a plurality of raised rings, and the sleeve is also provided with a through-hole waterproof portion.

[0014] In a preferred embodiment of the present invention, the through hole waterproof part includes a waterproof ring arranged on the sleeve and a plug connected to the waterproof ring, the plug and the waterproof ring are connected by a connecting line, and the plug and the through hole match each other.

[0015] In a preferred embodiment of the present invention, a battery slot is provided in the bracket body, and a plurality of support plates are provided on the bracket body along the length direction, and a circuit board groove is provided on each of the plurality of support plates, and a wire groove is also provided on the support plate near one end of the charging head slot.

[0016] In a preferred embodiment of the present invention, the battery slot is located at the lower part of the circuit board slot, the bottom end of the wire slot is lower than the bottom end of the circuit board slot, and the bottom end of the wire slot is higher than the bottom end of the battery slot.

[0017] In a preferred embodiment of the present invention, a circuit board fixing column is further provided on the top of the support plate.

[0018] In a preferred embodiment of the present invention, the inner brush head rubber ring includes an inner brush head rubber ring body and a rubber ring extension ring, the rubber ring extension ring is arranged along the inner ring of one end of the rubber ring body, and the rubber ring extension ring is coaxial with the rubber ring body, the rubber ring body abuts against the inner wall of the outer shell, and the outer diameter of the rubber ring extension ring is smaller than the outer diameter of the inner brush head rubber ring, the outer diameter of the rubber ring extension ring is larger than the outer diameter of the rubber ring slot on the inner brush head, and is less than or equal to the inner diameter of the top of the outer shell.

[0019] In a preferred embodiment of the present invention, an opening is provided on the gasket groove from the outer wall to the center point thereof, and the opening is communicated with the groove.

[0020] In a preferred embodiment of the present invention, the height of the hollow portion is greater than 0.05 cm.

[0021] In a preferred embodiment of the present invention, the charging head slot includes two relatively arranged semicircular card plates, the inner walls of the two semicircular card plates are provided with protrusions along the circumference, the protrusions match the charging head grooves, and one end of the charging head extends out of the charging head slot, and the outer ring of the charging head slot is provided with a lock.

[0022] The beneficial effects of the present invention are as follows: the motor is fixed by the extension head and the inner brush head, and the charging head is fixed by the charging head slot and the lock, thus avoiding the use of silicone, saving costs, and reducing the production process; a hollow portion and a groove are provided on the extension head to solve the problem of breakage of the motor wire interface caused by friction; the inner brush head rubber ring and the gasket are used to reduce the vibration and noise caused by the motor to the outer shell, thereby improving the user's comfort; and the extension ring groove on the end cover is used to fix the charging head in the opening on the end cover, thereby avoiding the charging head from being offset and facilitating charging of the charging head; the waterproof portion provided on the end cover avoids the loss of the waterproof portion, thereby improving the user's comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the present invention;

[0024] Figure 2 This is the main structure of the bracket Figure 1 ;

[0025] Figure 3 It is a schematic diagram of the connection structure between the bracket body and the inner brush head;

[0026] Figure 4 It is a schematic diagram of the lock structure of the present invention;

[0027] Figure 5 The end cap structure is shown Figure 1 ;

[0028] Figure 6 The end cap structure is shown Figure 2 ;

[0029] Figure 7 This is the main structure of the bracket Figure 2 ;

[0030] Figure 8 It is a schematic diagram of the inner brush head rubber ring structure. DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0033] Embodiment 1: Figures 1 to 4 An electric toothbrush is shown, comprising: a bracket body 1, an inner brush head 2, a charging head slot 3 and an end cover 4, wherein the bracket body 1 is provided with an extension head 5 at the top and a charging head slot 3 at the bottom;

[0034] The matching sleeve on the extension head 5 is provided with an inner brush head 2, and a motor is provided between the top of the extension head and the inner space of the inner brush head. By arranging the extension head 5 on the top of the bracket body 1, it is convenient to realize the connection between the bracket body 1 and the inner brush head 2 through the extension head 5, and the motor 10 is arranged between the top of the extension head 5 and the inner top of the inner brush head 2 to fix the motor and prevent the motor from falling out; a hollow portion 501 is provided at the inner top of the extension head 5, and a groove 502 is provided on the outer wall of the extension head 5 along its length direction, and the groove 502 is located at the bottom end of the hollow portion 501 and is connected to the hollow portion 501, a gasket groove 6 is provided between the bottom end of the extension head 5 and the top end of the bracket body 1, and a gasket 601 is provided in the gasket groove 6, the bottom end of the inner brush head 2 is sleeved in the outer shell 7, and an inner brush head rubber ring 201 is provided at the lower part of the outer wall of the inner brush head 2 through the inner brush head groove 202, and the inner brush head rubber ring 201 abuts between the inner brush head 2 and the outer shell 7;

[0035] The hollow part 501 and the groove 502 on the extension head 5 are arranged to facilitate the wires of the motor 10 in the electric toothbrush to pass through them. Compared with the existing problem that the wires touch and squeeze the buffer part, which eventually leads to the loosening and breaking of the motor wires, the present invention realizes the placement of the motor wires through the hollow part 501 and the groove 502, avoids the problem of contact and squeezing between the motor wires and other components, and prolongs the service life of the motor wires; and the setting of the gasket 601 on the bracket body 1 effectively prevents water from entering the motor. At the same time, the setting of the inner brush head rubber ring at the outer ring of the lower part of the inner brush head can effectively reduce the vibration of the motor on the shell, reduce people's grip vibration on the shell, and the setting of the inner brush head rubber ring 201 also effectively prevents water from entering the inner brush head, realizing the waterproof function of the inner brush head;

[0036] A protrusion matching the charging head groove 801 is provided along the circumference of the charging head slot 3, and a charging head 8 is provided in the charging head slot. The matching of the protrusion and the charging head groove enables the charging head to be initially fixed by the charging head slot, and one end of the charging head 8 extends out of the charging head slot 3. In this embodiment, the charging head slot 3 includes two relatively arranged semicircular card plates 301, and the inner walls of the two semicircular card plates 301 are provided with protrusions 302 along the circumference. The protrusions 302 match the charging head groove 801, and one end of the charging head extends out of the charging head slot.

[0037] The outer ring of the charging head slot 3 is provided with a lock buckle 9, and the outer ring of the lock buckle 9 is provided with an end cover 4;

[0038] The lock buckle 9 includes a lock buckle body 901 and an extension ring 902 extending along the inner diameter of one end of the lock buckle body 901. The inner diameter of the lock buckle body 901 is set from small to large from one end with the extension ring 902 to the other end, and the inner diameter of one end of the lock buckle body 901 without the extension ring matches the outer diameter of the charging head slot 3. The closer the lock buckle is to the bracket body, the tighter the bite force between the lock buckle and the charging head slot is. The lock buckle and the charging head buckle cooperate to fix the charging head, avoid deviation of the charging head, and strengthen the fixation of the charging head by the lock buckle.

[0039] The end cover 4 is provided with a through hole 401, and one end of the charging head 8 extending out of the charging head slot is matched and arranged in the through hole 401. The circumference of the through hole 401 is provided with an extension ring groove 402 matching the extension ring 902. The matching of the extension ring groove 402 and the extension ring 902 enables the matching connection between the end cover and the lock buckle, thereby enhancing the connection strength between the end cover and the lock buckle, and achieving further strengthening of the fixation of the end cover to the charging head.

[0040] The motor is fixed by the extension head and the inner brush head, and the charging head is fixed by the charging head slot and lock, avoiding the use of silicone, saving costs and reducing the production process; the hollow part and groove are set on the extension head to solve the problem of breakage caused by friction of the motor wire interface; the inner brush head rubber ring and gasket are used to reduce the vibration and noise caused by the motor to the shell, improving the user's comfort. And through the extension ring groove on the end cover, the charging head is fixed in the opening on the end cover to avoid the displacement of the charging head and facilitate charging the charging head; the waterproof part set on the end cover avoids the loss of the waterproof part and improves the user's comfort.

[0041] Embodiment 2: Figure 5 and Figure 6 As shown, the end cover 4 includes an end cover body 403 and a sleeve 404 , the end cover body 403 and the sleeve are integrally formed, the outer ring of the sleeve 404 is circumferentially provided with a plurality of raised rings 405 , and the sleeve 404 is also provided with a through-hole waterproof portion.

[0042] In this embodiment, the through hole waterproof part includes a waterproof ring 406 arranged on the sleeve and a plug 407 connected to the waterproof ring 406. The plug 407 is arranged on one side of the waterproof ring, and the plug 407 matches the through hole 401.

[0043] The plug 407 is arranged on the waterproof ring 406 to prevent the plug from being lost. The plug is matched and arranged on the charging head to achieve the waterproof function of the charging head.

[0044] Embodiment 3: Figure 7As shown, a battery slot 101 is provided in the bracket body 1, and a plurality of support plates 102 are provided on the bracket body 1 along the length direction. A circuit board groove 1021 is provided on each of the plurality of support plates 102, and a wire groove 1022 is also provided on the support plate 102 near one end of the charging head slot.

[0045] In this embodiment, the battery slot 101 is located at the lower part of the circuit board slot 1021, the bottom end of the wire slot 1022 is lower than the bottom end of the circuit board slot 1021, and the bottom end of the wire slot 1022 is higher than the bottom end of the battery slot 101. The battery slot 101 is used to place the battery 11, the circuit board slot 1021 is used to place the circuit board 12, and the wire slot 1022 is used to place the wires, that is, the circuit board 12 and the battery 11 are separated by the support plate, the battery is placed in the battery slot 101 inside the bracket body 1, the circuit board 12 is placed in the circuit board slot 1021 opened on the support plate, and the wires are routed through the wire slot 1021 to avoid the wires from being entangled. Through the design of the circuit board slot and the wire slot, the circuit board, battery, motor, and charging head can be connected first, and then installed on the bracket, which is convenient for maintenance.

[0046] In order to facilitate installation and fixing of the circuit board, a circuit board fixing column 1023 is further provided on the top of the support plate 102 .

[0047] Embodiment 4: Figure 3 and Figure 8 As shown, the inner brush head rubber ring 201 includes an inner brush head rubber ring body 2011 and a rubber ring extension ring 2012, wherein the rubber ring extension ring 2012 is arranged along the inner ring of one end of the rubber ring body 2011, and the rubber ring extension ring 2012 is coaxial with the rubber ring body 2011, the rubber ring body 2011 abuts against the inner wall of the outer shell 7, and the outer diameter of the rubber ring extension ring 2012 is smaller than the outer diameter of the inner brush head rubber ring, and the outer diameter of the rubber ring extension ring 2012 is larger than the outer diameter of the rubber ring slot on the inner brush head, and is less than or equal to the inner diameter of the top of the outer shell, that is, the rubber ring extension ring is allowed to collide with the outer shell to avoid the inner brush head from colliding with the outer shell, thereby playing a waterproof and vibration reduction role.

[0048] In this embodiment, an opening 602 is provided on the gasket groove 6 from the outer wall to the center point thereof, and the opening 602 is connected to the groove 502, so as to facilitate the wiring of the motor wires along the groove and the opening to the bracket body.

[0049] The height of the hollow portion 501 is greater than 0.05 cm, preferably 0.05-1 cm, that is, the height of the hollow portion can realize the transition housing from the motor to the groove of the wire, avoiding the wire from directly contacting other components and causing breakage.

[0050] In the description of this specification, the description with reference to the terms "one embodiment", "certain embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0051] In summary, although the present invention has been disclosed as above in terms of preferred embodiments, the above preferred embodiments are not intended to limit the present invention. A person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined in the claims.

Claims

1. An electric toothbrush, characterized in that: include: A bracket body, an inner brush head, a charging head slot and an end cover, wherein the top of the bracket body is provided with an extension head, and the bottom of the bracket body is provided with a charging head slot; An inner brush head is provided on the matching sleeve of the extension head, a motor is provided between the top of the extension head and the inner part of the inner brush head, a hollow part is provided on the inner top of the extension head, and a groove is provided on the outer wall of the extension head along its length direction, the groove is located at the bottom of the hollow part and is connected with the hollow part, a gasket groove is provided between the bottom end of the extension head and the top end of the bracket body, a gasket is provided in the gasket groove, the bottom end of the inner brush head is sleeved in the outer shell, and an inner brush head rubber ring is provided at the lower part of the outer wall of the inner brush head, and the inner brush head rubber ring abuts between the inner brush head and the outer shell; A protrusion matching the groove on the charging head is provided along the circumference of the charging head slot, a charging head is provided in the charging head slot, and one end of the charging head extends out of the charging head slot, a lock is provided on the outer ring of the charging head slot, and an end cover is provided on the outer ring of the lock; The lock buckle comprises a lock buckle body and an extension ring extending along the inner diameter of one end of the lock buckle body, the inner diameter of the lock buckle body is arranged from small to large from the end with the extension ring to the other end, and the inner diameter of the end of the lock buckle body without the extension ring matches the outer diameter of the charging head slot; The end cover is provided with a through hole, one end of the charging head extending out of the charging head slot is matched and arranged in the through hole, and the circumference of the through hole is provided with an extension ring groove matching the extension ring; The end cover comprises an end cover body and a sleeve, the end cover body and the sleeve are integrally formed, the outer ring of the sleeve is provided with a plurality of raised rings along the circumference, and the sleeve is also provided with a through-hole waterproof part; An opening is provided on the gasket groove from the outer wall to the center point thereof, and the opening is communicated with the groove.

2. The electric toothbrush according to claim 1, characterized in that: The through hole waterproof part includes a waterproof ring arranged on the sleeve and a plug connected to the waterproof ring. The plug and the waterproof ring are connected by a connecting line, and the plug and the through hole match each other.

3. The electric toothbrush according to claim 1, characterized in that: A battery slot is provided in the bracket body, and a plurality of support plates are provided on the bracket body along the length direction. A circuit board groove is provided on each of the plurality of support plates, and a wire groove is also provided on the support plate near one end of the charging head slot.

4. The electric toothbrush according to claim 3, characterized in that: The battery slot is located at the lower part of the circuit board slot, the bottom end of the wire slot is lower than the bottom end of the circuit board slot, and the bottom end of the wire slot is higher than the bottom end of the battery slot.

5. The electric toothbrush according to claim 3, characterized in that: A circuit board fixing column is also provided on the top of the support plate.

6. The electric toothbrush according to claim 1, characterized in that: The inner brush head rubber ring includes an inner brush head rubber ring body and a rubber ring extension ring. The rubber ring extension ring is arranged along the inner ring of one end of the rubber ring body, and the rubber ring extension ring is coaxial with the rubber ring body. The rubber ring body abuts against the inner wall of the outer shell, and the outer diameter of the rubber ring extension ring is smaller than the outer diameter of the inner brush head rubber ring. The outer diameter of the rubber ring extension ring is larger than the outer diameter of the rubber ring slot on the inner brush head, and is less than or equal to the inner diameter of the top of the outer shell.

7. The electric toothbrush according to claim 1, characterized in that: The height of the hollow portion is greater than 0.05 cm.

8. The electric toothbrush according to any one of claims 1 to 7, characterized in that: The charging head slot includes two oppositely arranged semicircular card plates, and protrusions are provided along the circumference of the inner walls of the two semicircular card plates, and the protrusions match the charging head grooves.

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