Rotary double-headed toothbrush

Abstract

This application relates to a rotary double-headed toothbrush, belonging to the field of daily necessities technology. It includes a handle, a brush shaft, two brush heads, and a rotating shaft. The two brush heads are integrally connected to both ends of the brush shaft. One end of the handle has a receiving cavity extending circumferentially towards the center of the handle and communicating with both sides. A rotating shaft is rotatably mounted within the receiving cavity at one end of the handle. The brush shaft is fixedly connected to the rotating shaft so that rotation of the brush shaft can drive one of the brush heads to be received within the receiving cavity. The handle is provided with a fixing member that abuts against and secures the brush shaft within the receiving cavity. This application effectively solves the problem of not being able to simultaneously satisfy the needs of both oral patients and the general public for toothbrushes.

Description

Technical Field

[0001] This application relates to the field of toothbrush technology, and in particular to a rotary double-headed toothbrush. Background Technology

[0002] In the field of oral care, toothbrushes are an essential daily cleaning tool, and their design directly affects the oral cleaning effect and user experience.

[0003] Most traditional toothbrushes are currently single-headed, with limited functionality, making them unsuitable for the diverse oral care needs of different people. The general public needs efficient cleaning of the tooth surface and gum line to prevent oral diseases; while oral health patients, such as those with oral ulcers or post-operative patients, require gentler cleaning methods to avoid irritating damaged tissues, while also addressing special areas such as between teeth. Existing single-headed toothbrushes are insufficient to meet the needs of both groups of people, so there is an urgent need for a toothbrush that can accommodate both needs. Utility Model Content

[0004] To address the issue of not being able to simultaneously satisfy the needs of both dental patients and the general public for toothbrushes, this application provides a rotary double-headed toothbrush.

[0005] This application provides a technical solution using the following method: a rotary double-headed toothbrush, comprising a handle, a brush rod, two brush heads, and a rotating shaft. The two brush heads are respectively disposed at both ends of the brush rod. One end of the handle is provided with a receiving cavity, which extends circumferentially toward the middle of the handle and is open to both sides. A rotating shaft is rotatably disposed within the receiving cavity at one end of the handle. The brush rod is fixedly connected to the rotating shaft so that the rotation of the brush rod can drive one of the brush heads to be received within the receiving cavity. The handle is provided with a fixing member that abuts against and fixes the brush rod within the receiving cavity.

[0006] By adopting the above technical solution, and using the fixed connection between the brush rod and the rotating shaft, as well as the circumferential extension design of the receiving cavity, flexible switching and storage of the two brush heads are achieved. Rotating the brush rod can store the brush head that is not in use into the receiving cavity, which is fixed by the contact of the fixing component. This not only avoids the pollution and wear caused by the idle brush head being exposed, but also greatly reduces the overall space occupied, making it convenient to carry and store. At the same time, the dual-head design can meet different cleaning needs, and the rotating structure makes the switching operation simple and convenient, effectively improving the convenience and practicality of use.

[0007] Preferably, the opening of the accommodating cavity is provided with a cover for closing the opening.

[0008] By adopting the above technical solution, the cover can form a closed space after closing the opening, effectively preventing external dust, moisture and other pollutants from entering the cavity, avoiding the contamination of idle brush heads or the growth of bacteria due to contact with a humid environment, thus improving the hygiene and safety of the toothbrush; at the same time, the closed state can also more stably restrict the position of the brush head in the cavity, preventing the brush head from accidentally falling out due to shaking during carrying, storage and use, further ensuring the reliability of storage.

[0009] Preferably, the cover is hinged to one side of the cavity opening, and the brush handle is provided with a snap-fit ​​assembly that snaps and fixes to the cover.

[0010] By adopting the above technical solutions, the hinge structure makes the opening and closing of the cover smoother, eliminating the need to disassemble or store the cover separately and avoiding the problem of the cover being lost; while the snap-fit ​​component can achieve a stable snap-fit ​​after the cover is closed, preventing the cover from being accidentally opened due to vibration or collision during carrying or use, ensuring that the sealed state inside the cavity remains effective, further strengthening the dust and dirt protection of idle brush heads, and making the opening, closing and fixing of the cover more effortless and efficient.

[0011] Preferably, a closing block extends from the end of the cover away from the hinge. When the cover is placed over the opening of the accommodating cavity, the closing block contacts the rotating shaft and closes the opening at the end of the brush handle.

[0012] By adopting the above technical solution, the sealing block on the cover contacts the rotating shaft and seals the end of the brush handle when the cover is closed. The sealing block fits snugly against the rotating shaft, filling the gap between the cover and the shaft, blocking the path of contaminants into the accommodating cavity, and further strengthening the sealing protection of the internal brush head. At the same time, sealing the end of the brush handle makes the overall structure more complete and improves the grip.

[0013] Preferably, the fixing member is a fixing block, which is disposed on the surface of the cover facing the brush rod. When the cover is placed over the opening of the receiving cavity, the fixing block abuts against the side wall of the brush rod.

[0014] By adopting the above technical solution, a fixing block is used as a fixing component on the cover. When the cover is closed, it abuts against the side wall of the brush rod. With the action of the cover closing, the fixing block can simultaneously form a stable abutment against the brush rod in the accommodating cavity, preventing the brush rod from falling out of the storage position due to the user using the toothbrush, thus strengthening the stability of the brush head storage.

[0015] Preferably, the fixing block has a reinforcing groove for embedding the brush rod.

[0016] By adopting the above technical solution, a reinforcing groove is created on the fixing block for the brush rod to be embedded, increasing the contact area between the groove and the brush rod and resulting in a tighter fit. This effectively restricts the brush rod's displacement in both horizontal and vertical directions, preventing wobbling or detachment and enhancing stability. Simultaneously, the groove provides a wrapping restraint for the brush rod, reducing wear on components caused by vibration and extending its service life. This structural design allows for a more precise fit between the fixing block and the brush rod, balancing stability and adaptability.

[0017] Preferably, a button groove is provided at the end of the brush handle near the rotating shaft. The snap-fit ​​assembly includes a locking member, a spring, and a locking member. The locking member is installed in the button groove. A locking member is provided at the end of the cover away from the receiving cavity. One end of the spring abuts against the locking member, and the other end of the spring abuts against the button groove. When the cover closes the receiving cavity, it is locked with the locking member by the locking member. When the locking member is pressed, the spring is compressed, causing the locking member to separate from the locking member.

[0018] By adopting the above technical solution, a button groove is provided at the end of the brush handle near the rotating shaft, and the locking element is built into it. The two ends of the spring abut against the locking element and the button groove respectively. When the cover closes the accommodating cavity, the locking element and the locking element are tightly locked. The spring preload strengthens the fixing effect, which can effectively prevent the cover from being accidentally opened due to shaking, and ensure that the brush head in the accommodating cavity is protected from dust, pollution and falling off. When it is necessary to open the cover, simply press the locking element to compress the spring, so that the locking element and the locking element can be quickly separated. No complicated operation is required, which is suitable for one-handed operation. At the same time, the spring can buffer the impact force when the locking element is pressed and reset, reduce the hard contact wear between the locking element and the locking element, and take into account both the stability of the cover fixing and the practicality of the opening and closing operation.

[0019] Preferably, an ultraviolet lamp is provided on the side of the accommodating cavity facing the brush bristles of the brush head, and a power module for powering the ultraviolet lamp is provided inside the brush handle.

[0020] By adopting the above technical solution, a UV lamp is installed on the side of the receiving cavity facing the brush head bristles. The UV lamp can irradiate and sterilize the brush head and bristles stored in the receiving cavity, effectively inactivating bacteria, viruses, and other microorganisms, solving the problem of bacteria easily growing when the brush head is not in use, and greatly improving the hygiene of use. The built-in power module provides stable power support for the UV lamp, ensuring that the sterilization function is continuously effective. The combination of the two allows the idle brush head to be disinfected simultaneously during storage, realizing the integration of storage and sterilization, and further optimizing the hygienic protection performance of the toothbrush.

[0021] In summary, this application includes at least one of the following beneficial technical effects: The design incorporates a fixed connection between the brush handle and the rotating shaft, along with a circumferentially extended accommodating cavity, enabling flexible switching and storage of the two brush heads. Rotating the brush handle allows unused brush heads to be stored in the accommodating cavity, where they are secured by a fixing component. This prevents contamination and wear caused by exposed brush heads and significantly reduces the overall space required, making it convenient to carry and store. Furthermore, the dual-head design caters to different cleaning needs, while the rotating mechanism makes switching simple and convenient, effectively enhancing usability and practicality. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the double-headed toothbrush with the cover closed in the embodiment of this application.

[0023] Figure 2 This is a schematic diagram of the overall structure of the double-headed toothbrush cover after it is opened in the embodiment of this application.

[0024] Figure 3 This is a three-dimensional structural diagram of the snap-fit ​​assembly of the double-headed toothbrush in the embodiments of this application.

[0025] Figure 4 This is a three-dimensional structural diagram of the ultraviolet lamp and charging module of the dual-headed toothbrush in the embodiments of this application.

[0026] Explanation of reference numerals in the attached drawings: 11. Brush handle; 12. Brush rod; 13. Brush head; 14. Rotating shaft; 15. Brush bristles; 16. Receiving cavity; 17. Protrusion; 18. Groove; 19. Fixing block; 20. Cover; 21. Sealing block; 22. Reinforcing groove; 23. Button groove; 24. Snap-fit ​​assembly; 241. Locking fastener; 2411. Snap-fit ​​block; 2412. Mounting block; 242. Spring; 243. Fixing block; 25. Clearing hole; 26. Fixing groove; 27. Guide slope; 28. Ultraviolet lamp; 29. ​​Battery; 30. Charging port. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0028] This application discloses a rotary double-headed toothbrush. (See also...) Figure 1 and Figure 2A rotary double-headed toothbrush includes a handle 11, a brush shaft 12, two brush heads 13, and a rotating shaft 14. The two brush heads 13 are integrally connected to both ends of the brush shaft 12. Both brush heads 13 are provided with bristles 15. One brush head 13 is an oval-shaped brush head with bristles all around, which is used by oral patients. The other brush head 13 is a common brush head used by the general public. The handle 11 is rectangular in shape. One end of the handle 11 is provided with a receiving cavity 16, which is open to both sides. The rotating shaft 14 is rotatably installed in the receiving cavity 16 at one end of the handle 11. In this embodiment, the rotating shaft 14 is provided with protrusions 17 at both ends. The handle 11 is provided with grooves 18 for the protrusions 17 to be inserted. The rotating shaft 14 is fixed to the handle 11 by inserting the protrusions 17 into the grooves 18. The brush rod 12 is integrally fixedly connected to the rotating shaft 14. The rotation of the brush rod 12 can drive one of the brush heads 13 to be housed in the receiving cavity 16. The brush handle 11 is provided with a fixing member that abuts against and fixes the brush rod 12 in the receiving cavity 16.

[0029] Reference Figure 2 Furthermore, each of the two opposite openings of the accommodating cavity 16 is hinged with a cover 20 for closing the opening. A closing block 21 extends from the end of each cover 20 away from the hinge. The closing block 21 is perpendicular to the cover 20 and has a clearance notch. When the cover 20 is placed over the opening of the accommodating cavity 16, the clearance notch of the two closing blocks 21 allows space for the brush rod, simultaneously closing the opening at the end of the brush handle 11. The cover 20 is hinged to one side of the opening of the accommodating cavity 16, and the brush handle 11 is provided with a snap-fit ​​assembly 24 that engages and fixes with the cover 20. In this embodiment, the fixing element is a fixing block 19. The fixing block 19 is disposed on the surface of the cover 20 facing the brush handle 11. When the cover 20 is placed over the opening of the accommodating cavity 16, the fixing block 19 abuts against the side wall of the brush rod 12. The fixing block 19 has a reinforcing groove 22 for the brush rod 12 to be inserted. When the cover 20 is closed in the receiving cavity 16, the fixing block 19 forms an interlocking contact with the brush rod 12 through the reinforcing groove 22. This not only enhances the fixing force of the brush rod 12 by using the groove to limit the movement, effectively preventing the brush rod 12 from shaking or shifting in the receiving cavity 16, but also reduces wear on the parts through close contact. At the same time, the fixing function is linked with the cover 20, so the brush rod 12 can be stably stored without additional operation, making the structure more compact.

[0030] Specifically, refer to Figure 2 and Figure 3A button groove 23 is provided at one end of the brush handle 11 near the rotating shaft 14. The snap-fit ​​assembly 24 includes a locking member 241, a spring 242 and a locking member. The locking member 241 is installed in the button groove 23. The locking member 241 includes a snap-fit ​​block 2411 and a mounting block 2412. The snap-fit ​​block 2411 is vertically fixed to one end of the mounting block 2412. The mounting block 2412 is hinged in the middle of the button groove 23. One end of the spring 242 abuts against one end of the mounting block 2412 away from the snap-fit ​​block 2411. The other end of the spring 242 abuts against the button groove 23. One end of the button groove 23 is provided with a relief hole 25 communicating with the receiving cavity 16. The snap-fit ​​block 2411 can move through the relief hole 25.

[0031] The locking element is a fixing block 243, which is disposed on the cover 20. The fixing block 243 has a fixing groove 26. When the cover 20 closes the receiving cavity 16, the snap-fit ​​block 2411 is snapped into the fixing groove 26 under the elastic force of the spring 242. When it is necessary to flip the cover 20 to open the receiving cavity 16, the mounting block 2412 is pressed to disengage the snap-fit ​​block 2411 from the fixing groove 26. In this embodiment, there are four snap-fit ​​components 24, which are disposed on both sides of the two surfaces of the brush handle 11 near the rotating shaft 14.

[0032] To facilitate the cover 20 closing onto the opening of the accommodating cavity 16, the snap-fit ​​block 2411 is provided with a guide slope 27 facing the cover 20.

[0033] Reference Figure 1 and Figure 4 Furthermore, after using the toothbrush, water stains and other impurities may remain on the brush head 13. If left in the sealed cavity 16 for a long time, bacteria can easily grow. To address this, an ultraviolet lamp 28 is provided on the side of the cavity 16 facing the bristles 15 of the brush head 13. A power module for supplying power to the ultraviolet lamp 28 is provided inside the brush handle 11. The ultraviolet lamp 28 is used to illuminate and sterilize the brush head 13 inside the cavity 16. In this embodiment, the power module includes a battery 29 and a charging port 30. The battery 29 is located on the side wall inside the brush handle 11. The charging port 30, which supplies power to the ultraviolet lamp 28, is located at the bottom of the brush handle 11 and is used to connect to an external power source to supply power to the battery 29.

[0034] The implementation principle of a rotary double-headed toothbrush according to an embodiment of this application is as follows: One end of the brush handle 11 has a receiving cavity 16, in which a rotating shaft 14 is fixed by a protrusion 17 inserted into a groove 18. The brush rod 12 is connected to the rotating shaft 14, and the two ends have double brush heads 13 with different bristles 15. Rotating the brush rod 12 can retract one brush head 13 into the receiving cavity 16. The receiving cavity 16 has openings on both sides that are hinged to the cover 20. When the cover is closed, the sealing block 21 avoids the brush rod 12 by using a clearance notch and seals the opening. The fixing block 19 on the cover 20 is fitted and fixed to the brush rod 12 by a reinforcing groove 22. The end of the brush handle 11 near the rotating shaft 14 has a button groove 23, which contains a snap-fit ​​assembly 24 containing a snap-fit ​​block 2411, a mounting block 2412, and a spring 242. When the cover is closed, the snap-fit ​​block 2411 is snapped into the fixing groove of the fixing block 19 on the cover 20 by the guide slope 27; pressing the mounting block 2412 compresses the spring 242, causing the snap-fit ​​block 2411 to disengage from the fixing groove, thus opening the cover. Meanwhile, the accommodating cavity 16 is equipped with an ultraviolet lamp 28, which is powered by the battery 29 inside the brush handle 11 and replenished by the bottom charging port 30, so as to achieve sterilization of the stored brush head 13 and prevent bacterial growth.

[0035] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "an" or "a" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" and similar terms mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0036] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A rotary double-headed toothbrush, characterized in that: The brush includes a handle (11), a brush rod (12), two brush heads (13), and a rotating shaft (14). The two brush heads (13) are respectively disposed at both ends of the brush rod (12). One end of the handle (11) is provided with a receiving cavity (16). The receiving cavity (16) extends circumferentially towards the middle of the handle (11) and is connected to both sides. The rotating shaft (14) is rotatably disposed in the receiving cavity (16) at one end of the handle (11). The brush rod (12) is fixedly connected to the rotating shaft (14) so ​​that the rotation of the brush rod (12) can drive one of the brush heads (13) to be received in the receiving cavity (16). The handle (11) is provided with a fixing member that abuts against and fixes the brush rod (12) in the receiving cavity (16).

2. The rotary double-headed toothbrush according to claim 1, characterized in that: The opening of the accommodating cavity (16) is provided with a cover (20) for closing the opening.

3. The rotary double-headed toothbrush according to claim 2, characterized in that: The cover (20) is hinged to one side of the opening of the accommodating cavity (16), and the brush handle (11) is provided with a snap-fit ​​assembly (24) that snaps and fixes to the cover (20).

4. The rotary double-headed toothbrush according to claim 3, characterized in that: The cover (20) extends a closing block (21) at the end away from the hinge. When the cover (20) is placed over the opening of the accommodating cavity (16), the closing block (21) closes the opening at the end of the brush handle (11).

5. The rotary double-headed toothbrush according to claim 4, characterized in that: The fixing component is a fixing block (19), which is disposed on the surface of the cover (20) facing the brush rod (12). When the cover (20) is placed over the opening of the accommodating cavity (16), the fixing block (19) abuts against the side wall of the brush rod (12).

6. The rotary double-headed toothbrush according to claim 5, characterized in that: The fixing block (19) has a reinforcing groove (22) for inserting the brush rod (12).

7. The rotary double-headed toothbrush according to claim 3, characterized in that: A button slot (23) is provided at one end of the brush handle (11) near the rotating shaft (14). The snap-fit ​​assembly (24) includes a locking member (241), a spring (242), and a locking member. The locking member (241) is installed in the button slot (23). A locking member is provided at one end of the cover (20) away from the receiving cavity (16). One end of the spring (242) abuts against the locking member (241), and the other end of the spring (242) abuts against the button slot (23). When the cover (20) covers the receiving cavity (16), it is locked with the locking member (241) by the locking member. When it is necessary to flip the cover (20) to open the receiving cavity (16), pressing the locking member (241) will separate the locking member from the locking member (241).

8. The rotary double-headed toothbrush according to claim 1, characterized in that: An ultraviolet lamp (28) is provided on the side of the cavity (16) facing the bristles (15) of the brush head (13), and a power module for supplying power to the ultraviolet lamp (28) is provided in the handle (11).

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