Brush head structure and electric toothbrush

Abstract

The utility model relates to the technical field of toothbrushes, and discloses a brush head structure and an electric toothbrush, the brush head structure comprises a brush head body, the brush head body comprises a brush head part, an accommodating cavity with an opening at one end is formed in the brush head body, and the opening end of the accommodating cavity deviates from the brush head part; the base is located at the open end of the brush head body and detachably connected with the brush head body, the base comprises a bottom plate, at least two first conductive parts are arranged on the bottom plate, and the first conductive parts penetrate through the bottom plate; and the heating piece is arranged in the accommodating cavity, and the heating piece is electrically connected with the first conductive piece. The heating piece is arranged in the accommodating cavity of the brush head body, and the at least two first conductive pieces for connecting the inside and the outside of the accommodating cavity are arranged on the bottom plate of the base, so that the heating piece can be electrically connected with the power supply in the electric toothbrush body through the at least two first conductive pieces on the bottom plate; therefore, the heating piece is heated after being powered on to heat the brush head body, and the comfort degree of tooth brushing is improved.

Description

Technical Field

[0001] This utility model relates to the field of toothbrush technology, specifically to brush head structure and electric toothbrush. Background Technology

[0002] Electric toothbrushes are common in daily life, providing great convenience to users. In an increasingly competitive market, the diversification of electric toothbrushes' functions and usage environments can enhance their competitiveness.

[0003] Most electric toothbrushes on the market can meet the needs of use in normal environments. However, in cold weather and without hot water, some users and children with sensitive mouths may experience discomfort when brushing their teeth with a cold brush head. Since electric toothbrushes do not have a heating function, the brush head is not very comfortable and the user experience is poor. Utility Model Content

[0004] In view of this, the present invention provides a brush head structure and an electric toothbrush to solve the problem that the lack of a heating function in the brush head leads to poor brushing comfort.

[0005] In a first aspect, this utility model provides a brush head structure, comprising: a brush head body, including a brush head, wherein an open-end receiving cavity is formed inside the brush head body, the open end of the receiving cavity being away from the brush head; a base, located at the open end of the brush head body and detachably connected to the brush head body, the base including a base plate, wherein at least two first conductive elements are disposed on the base plate, and the first conductive elements penetrate the base plate; and a heating element disposed in the receiving cavity, wherein the heating element is electrically connected to the first conductive elements.

[0006] Beneficial effects: By setting a heating element in the receiving cavity of the brush head body and setting at least two first conductive elements connecting the inside and outside of the receiving cavity on the bottom plate of the base, the heating element can be electrically connected to the power supply inside the electric toothbrush body through the at least two first conductive elements on the bottom plate. Thus, the heating element heats up when it is energized, thereby heating the brush head body. The heated brush head body can increase the comfort of brushing teeth during contact with teeth, solving the problem of poor brushing comfort in cold weather and without hot water, and improving the comfort of brushing teeth.

[0007] In one optional embodiment, the receiving cavity includes a first cavity and a second cavity that are connected to each other. The end of the second cavity away from the first cavity forms the opening end of the brush head body. The heating element includes a heating part and a connecting wire. The heating part is located in the first cavity and is in contact with the inner wall of the first cavity. The connecting wire is located in the second cavity.

[0008] Beneficial effects: By setting the heating element to fit snugly against the inner wall of the first cavity, the brush head body tightly wraps around the heating element, resulting in good thermal conductivity between the brush head body and the heating element. This ensures the heating speed of the heating element on the brush head structure. Furthermore, the second cavity provides sufficient space for the connecting wires, facilitating the wiring of the connecting wires during the assembly of the brush head structure.

[0009] In one optional embodiment, the heating element includes a heating head and a heating rod, and the brush head body includes the brush head and the brush head rod. The brush head rod includes a first rod segment and a second rod segment. The first rod segment is connected between the brush head and the second rod segment, and the second rod segment corresponds to the second cavity. The shape of the heating head is adapted to the shape of the brush head, and the shape of the heating rod is adapted to the shape of the first rod segment.

[0010] Beneficial effects: By setting the heating element to have a heating head and a first rod segment that are adapted to the shape of the brush head and the brush head rod of the brush head body, the heating contact area can be increased, the heating rate can be improved, and the heating element can be used to uniformly heat the brush head body, thereby further ensuring the heating effect.

[0011] In one alternative embodiment, the brush head body is injection molded to encapsulate the heating element's heating portion;

[0012] And / or, the base is injection molded around the outer periphery of the first conductive element.

[0013] Beneficial effects: By injection molding the brush head body around the outside of the heating element, the heating element is tightly fitted to the inner wall of the first cavity, resulting in good sealing. This makes the brush head body and the heating element an integral structure with a stable connection between them, ensuring that the heating element has good heating performance on the brush head body. Furthermore, the injection molding process is relatively simple, the technology is mature, the production yield is high, and the reliability is high.

[0014] By injection molding the base around the outer periphery of the first conductive component, the base and the first conductive component are integrally formed, achieving a stable connection between the two. On the other hand, it ensures that the first conductive component can penetrate the base plate along the thickness direction of the base plate, thereby ensuring that the first conductive component can connect the inside and outside of the receiving cavity, so as to facilitate electrical connection with the second conductive component on the machine body.

[0015] In one alternative embodiment, the base further includes a column connected to one side of the base plate, the column being detachably inserted into the second cavity, and an opening being provided on one end of the column opposite to the brush head body to form an insertion cavity in the column.

[0016] Beneficial effects: By setting the column on the base to have an insertion cavity, and the opening of the insertion cavity facing away from the brush head body, the brush head structure can be inserted into the vibration rod on the machine body through the insertion cavity on the column, thereby realizing the detachable connection between the brush head structure and the machine body. Furthermore, the column protrudes from the surface of the base plate. By setting the column to be detachably inserted into the second cavity, when the column is inserted into the second cavity, it can increase the insertion length between the brush head structure and the vibration rod, increase the connection stability, make full use of the internal space of the brush head body, avoid the brush head structure being too large, and also ensure that after the brush head structure and the vibration rod are inserted, the first conductive element on the base plate is spaced apart from the vibration rod, avoiding the influence of the vibration rod on the electrical connection stability between the first conductive element and the second conductive element.

[0017] In one alternative embodiment, the second cavity includes a main chamber and a side chamber, the side chamber being connected to the outer periphery of the main chamber, the main chamber being adapted to accommodate the column, and the side chamber being adapted to accommodate the connecting wire.

[0018] Beneficial effects: By dividing the second cavity into a main chamber and a side chamber, the main chamber is used to accommodate the column of the base, and the side chambers provide space for the connecting wires, so that the column and the connecting wires are separated and interference is avoided.

[0019] In one optional embodiment, the brush head structure further includes: a first circuit board, which is disposed between the base plate and the brush head body, and the first conductive element and the connecting wire are electrically connected to the first circuit board.

[0020] Beneficial effects: By setting the first conductive component and the connecting line to be electrically connected to the first circuit board, and the first circuit board is provided with the lines connecting the first conductive component and the connecting line, the first circuit board provides the connection position for the first conductive component and the connecting line. The first conductive component and the connecting line are electrically connected through the first circuit board, resulting in a stable structure, high reliability, and easy assembly.

[0021] In one alternative embodiment, the first circuit board is annular and sleeved on the outside of the column.

[0022] Beneficial effects: The column limits the position of the first circuit board, which facilitates assembly and ensures the stability of the relative position between the first circuit board and the base, preventing the first circuit board from shaking inside the brush head body, reducing noise, and ensuring the stability of the electrical connection between the first conductive component and the connecting wire and the first circuit board, avoiding the occurrence of poor electrical connection.

[0023] In one optional embodiment, the base further includes an annular protrusion on the base plate, and an annular groove that mates with the protrusion is provided on one end of the brush head body facing the base plate. The first circuit board is located between the protrusion and the column, and the inner circumferential surface of the protrusion mates with the outer edge of the first circuit board.

[0024] Beneficial effects: By setting an annular protrusion on the base plate and an annular groove corresponding to the protrusion on the brush head body, the connection between the base plate and the brush head body can be achieved through the insertion and mating of the protrusion and the groove, and the sealing between the base plate and the brush head body can also be guaranteed. At the same time, by setting the outer edge of the first circuit board to mate with the inner circumferential surface of the protrusion, the protrusion radially limits the first circuit board. Combined with the mating of the inner edge of the first circuit board with the outer circumferential surface of the column, the first circuit board is fixed between the protrusion and the column, further improving the stability of the first circuit board.

[0025] Secondly, this utility model also provides an electric toothbrush, comprising: a body, including a housing and a power supply component installed within the housing, wherein a second conductive element is provided at a first end of the housing, the power supply component has a power source, and the second conductive element is electrically connected to the power source; and the aforementioned brush head structure, wherein the brush head structure is detachably connected to the body, and when the brush head structure is connected to the body, the first conductive element on the brush head structure is electrically connected to the second conductive element. Since the electric toothbrush includes a brush head structure and has the same effect as the brush head structure, it will not be described in detail here.

[0026] In one alternative embodiment, the second conductive element is a spring pin.

[0027] Beneficial effects: The elastic force of the spring inside the spring needle ensures that the first conductive element and the second conductive element always maintain good contact. Even during the vibration operation of the brush head structure, the first conductive element and the second conductive element still have a stable electrical connection, ensuring the stable transmission of current signals. This ensures the heating effect of the heating element on the brush head body, resulting in high reliability. Furthermore, the spring needle is small in size and has high precision. Attached Figure Description

[0028] 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.

[0029] Figure 1 This is a schematic diagram of a brush head structure according to an embodiment of the present utility model;

[0030] Figure 2 for Figure 1 The diagram shown is an exploded view of the brush head structure.

[0031] Figure 3 This is a schematic diagram of the structure of a brush head body according to an embodiment of the present utility model;

[0032] Figure 4 for Figure 3 A cross-sectional view of the brush head body shown;

[0033] Figure 5 This is a schematic diagram of the structure of a base according to an embodiment of the present utility model;

[0034] Figure 6 This is a schematic diagram of the structure of a first circuit board according to an embodiment of the present utility model;

[0035] Figure 7 This is a schematic diagram of the structure of an electric toothbrush according to an embodiment of the present utility model;

[0036] Figure 8 for Figure 7 A cross-sectional view of the electric toothbrush shown in the AA direction;

[0037] Figure 9 for Figure 8 A magnified view of part B in the diagram;

[0038] Figure 10 This is a schematic diagram showing the positional relationship between the body and brush head of the electric toothbrush before assembly, according to an embodiment of this utility model.

[0039] Figure 11 This is a partially enlarged schematic diagram of the first end of the fuselage according to an embodiment of the present utility model;

[0040] Figure 12 This is a schematic diagram of the mechanism assembly according to an embodiment of the present invention;

[0041] Figure 13 for Figure 12 An exploded view of the movement components shown;

[0042] Figure 14 This is a schematic diagram of the structure of the second circuit board according to an embodiment of the present utility model;

[0043] Figure 15 This is a schematic diagram of the structure of the silicone sleeve according to an embodiment of the present invention.

[0044] Explanation of reference numerals in the attached figures:

[0045] 100. Brush head structure; 1. Brush head body; 101. Receiving cavity; 102. First cavity; 103. Second cavity; 1031. Main chamber; 1032. Side chamber; 104. Groove; 111. Brush head; 112. Brush head rod; 1121. First rod segment; 1122. Second rod segment; 2. Base; 201. Base plate; 202. Column; 2021. Insertion cavity; 203. Protruding edge; 204. First conductive element; 3. Heating element; 301. Heating part; 30 11. Heating head; 3012. Heating rod; 302. Connecting wire; 4. First circuit board; 401. Welding part; 5. Housing; 501. Button; 6. Power supply assembly; 601. Power supply; 602. Main board; 7. Second conductive component; 701. Second circuit board; 7011. Ring part; 7012. Extension part; 8. Vibration unit; 801. Vibration rod; 802. Vibration part; 9. Mechanism bracket; 10. Silicone sleeve; 1001. First through hole; 1002. Second through hole. Detailed Implementation

[0046] 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.

[0047] The following is combined with Figures 1 to 15 The following describes embodiments of the present invention.

[0048] According to an embodiment of the present invention, a brush head structure 100 is provided, such as... Figures 1 to 6 As shown, the brush head structure 100 includes: a brush head body 1, a base 2, and a heating element 3. The brush head body 1 includes a brush head 111, and a receiving cavity 101 with an open end is formed inside the brush head body 1, with the open end of the receiving cavity 101 facing away from the brush head 111; the base 2 is located at the open end of the brush head body 1 and is detachably connected to the brush head body 1, the base 2 includes a base plate 201, and at least two first conductive elements 204 are provided on the base plate 201, and the first conductive elements 204 penetrate the base plate 201; the heating element 3 is disposed in the receiving cavity 101, and the heating element 3 is electrically connected to the first conductive elements 204.

[0049] By applying the brush head structure 100 of this embodiment, a heating element 3 is provided in the receiving cavity 101 of the brush head body 1, and at least two first conductive elements 204 connecting the inside and outside of the receiving cavity 101 are provided on the bottom plate 201 of the base 2. The heating element 3 can be electrically connected to the power supply inside the electric toothbrush body through the at least two first conductive elements 204 on the bottom plate 201. Thus, the brush head body 1 is heated by the heating element 3 after being energized. The heated brush head body 1 can increase the comfort of brushing teeth during contact with teeth, solving the problem of poor brushing comfort in cold weather and without hot water, and improving the comfort of brushing teeth.

[0050] Furthermore, the base 2 is detachably connected to the brush head body 1, facilitating disassembly and assembly, thus enabling maintenance and replacement. When the base 2 is connected to the brush head body 1, the base 2 seals the open end of the brush head body 1, ensuring the airtightness between the base 2 and the brush head body 1. The heating element 3 is sealed within the enclosed space formed by the base 2 and the brush head body 1, providing good waterproof performance. This helps ensure the safe operation of the heating element 3, extends its service life, enhances the user experience, and increases the product's competitiveness in the market.

[0051] It should be noted that the number of first conductive elements 204 is at least two, so that the heating element 3 can form a complete circuit after being connected to the power source through the two first conductive elements 204, thereby ensuring that the heating element 3 is energized and generates heat. Optionally, the number of first conductive elements 204 can be two, four, or other numbers.

[0052] Preferably, the heating element 3 is a miniature heater, which has a compact structure, occupies little space, has precise dimensions, and is finely crafted, which is conducive to the miniaturization of electric toothbrushes.

[0053] Specifically, the heating element 3 is made of metal, and the brush head body 1 is made of plastic.

[0054] In one embodiment, further combination Figure 4 , Figures 8 to 9As shown, the receiving cavity 101 includes a first cavity 102 and a second cavity 103 that are connected to each other. The end of the second cavity 103 away from the first cavity 102 forms the opening end of the brush head body 1. The heating element 3 includes a heating part 301 and a connecting wire 302. The heating part 301 is located in the first cavity 102 and is attached to the inner wall of the first cavity 102. The connecting wire 302 is located in the second cavity 103. The first cavity 102 provides a space to accommodate the heating element 301 of the heating element 3, and the second cavity 103 provides a space to accommodate the connecting wire 302 of the heating element 3. By setting the heating element 301 to fit against the inner wall of the first cavity 102, the brush head body 1 tightly wraps the heating element 301, so that the brush head body 1 and the heating element 301 have good thermal conductivity, thereby ensuring the heating speed of the heating element 3 on the brush head structure 100. In addition, the second cavity 103 provides sufficient space to accommodate the connecting wire 302, which facilitates the wiring of the connecting wire 302 during the assembly of the brush head structure 100.

[0055] In one embodiment, further combination Figure 2 and Figure 4 As shown, the heating element 301 includes a heating head 3011 and a heating rod 3012. The brush head body 1 includes a brush head 111 and a brush head rod 112. The brush head rod 112 includes a first rod segment 1121 and a second rod segment 1122. The first rod segment 1121 is connected between the brush head 111 and the second rod segment 1122. The second rod segment 1122 corresponds to the second cavity 103. The shape of the heating head 3011 is adapted to the shape of the brush head 111, and the shape of the heating rod 3012 is adapted to the shape of the first rod segment 1121. It should be noted that the brush head 111 and the first rod segment 1121 on the brush head body 1 correspond to the first cavity 102, and the second rod segment 1122 corresponds to the second cavity 103. That is, the brush head 111 and the first rod segment 1121 together correspond to the heating part 301 of the heating element 3, and the second rod segment 1122 corresponds to the connecting line 302 of the heating element 3. The heating element 3 is a custom-made part, and the heating head 3011 corresponds to the brush head 111. The shape of the heating head 3011 is the same as that of the brush head 111, and the size of the heating head 3011 is smaller than that of the brush head 111. The heating rod 3012 corresponds to the first segment 1121 of the brush head rod 112. The shape of the heating rod 3012 is the same as that of the first segment 1121, and the size of the heating rod 3012 is smaller than that of the first segment 1121. By setting the heating part 301 to have a heating head 3011 and a heating rod 3012 that are adapted to the shapes of the brush head head 111 and the first segment 1121 of the brush head body 1, the heating contact area can be increased, the heating rate can be improved, and the heating part 301 can be used to uniformly heat the brush head body 1, thereby further ensuring the heating effect.

[0056] In one embodiment, the brush head body 1 is injection molded to enclose the heating element 301 of the heating element 3. By injection molding the brush head body 1 around the outside of the heating element 301, a tight fit is achieved between the heating element 301 and the inner wall of the first cavity 102, resulting in good sealing. This makes the brush head body 1 and the heating element 3 an integral structure, achieving a stable connection between them. This ensures that the heating element 3 provides good heating performance to the brush head body 1. Furthermore, the injection molding process is relatively simple, technically mature, and has a high production yield and high reliability.

[0057] In one embodiment, the base 2 is injection molded around the outer periphery of the first conductive element 204. The first conductive element 204 is columnar, and the outer periphery refers to its outer circumferential surface. By injection molding the base 2 around the outer periphery of the first conductive element 204, the base 2 and the first conductive element 204 are integrally formed, achieving a stable connection between them. Furthermore, it ensures that the first conductive element 204 can penetrate the base plate 201 along its thickness direction, thereby ensuring that the first conductive element 204 can communicate with the inside and outside of the receiving cavity 101, facilitating electrical connection with the second conductive element 7 on the machine body.

[0058] Specifically, the heating element 301 of the heating element 3 is embedded in the brush head body 1, and the heating element 3 and the brush head body 1 are integrated into one structure. The first conductive element 204 is embedded in the base 2, and the first conductive element 204 and the base 2 are integrated into one structure. This allows the brush head structure 100 to be assembled from supplied materials, which is beneficial to improving production efficiency.

[0059] Preferably, the first conductive element 204 is a copper pillar that penetrates the base plate 201 along the center line of the brush head structure 100, with both ends of the copper pillar exposed on the surface of the base plate 201.

[0060] In one embodiment, further combination Figure 5 and Figure 9As shown, the base 2 also includes a column 202, which is connected to one side of the base plate 201. The column 202 is detachably inserted into the second cavity 103. An opening is provided on the end of the column 202 facing away from the brush head body 1 to form an insertion cavity 2021 in the column 202. By setting the column 202 on the base 2 to have an insertion cavity 2021, and the opening of the insertion cavity 2021 facing away from the brush head body 1, the brush head structure 100 can be inserted into the vibration rod 801 on the machine body through the insertion cavity 2021 on the column 202, thereby realizing the detachable connection between the brush head structure 100 and the machine body. Furthermore, the column 202 protrudes from the surface of the base plate 201. By setting the column 202 to be detachably inserted into the second cavity 103, when the column 202 is inserted into the second cavity 103, the brush head body 1 can be fully utilized. The internal space avoids the brush head structure 100 from being too large. Since the second cavity 103 provides sufficient space for the column 202, the length of the column 202 can be guaranteed. This increases the insertion length between the brush head structure 100 and the vibration rod 801, thereby increasing connection stability. It also ensures that after the brush head structure 100 and the vibration rod 801 are inserted, the first conductive element 204 on the base plate 201 is spaced apart from the vibration rod 801, thus avoiding the influence of the vibration rod 801 on the electrical connection stability between the first conductive element 204 and the second conductive element 7.

[0061] Preferably, the column 202 and the connecting line 302 are spaced apart and do not interfere with each other.

[0062] In one embodiment, further combination Figure 4 and Figure 9 As shown, the second cavity 103 includes a main cavity 1031 and a side cavity 1032. The side cavity 1032 is connected to the outer periphery of the main cavity 1031. The main cavity 1031 is adapted to accommodate the column 202, and the side cavity 1032 is adapted to accommodate the connecting line 302. By dividing the second cavity 103 into the main cavity 1031 and the side cavity 1032, the main cavity 1031 is used to accommodate the column 202 of the base 2, and the side cavity 1032 provides space for the connecting line 302, so that the column 202 and the connecting line 302 are spaced apart to avoid interference.

[0063] In one embodiment, further combination Figures 3 to 4 As shown, the circumferential dimension of the side chamber 1032 along the brush head body 1 is smaller than the outer circumferential dimension of the main chamber 1031. This provides sufficient space without affecting the arrangement of the connecting wire 302, while also improving compactness, enhancing the stability of the relative position of the connecting wire 302 inside the brush head body 1, and reducing noise during the vibration of the brush head structure 100.

[0064] Specifically, the heating element 3 has two connecting wires 302, one of which is a positive wire and the other is a negative wire. Correspondingly, there are two side chambers 1032, which are arranged opposite to each other on both sides of the main chamber 1031. Each side chamber 1032 contains one connecting wire 302.

[0065] In one embodiment, further structure Figure 2 and Figure 9 As shown, the brush head structure 100 also includes a first circuit board 4, which is disposed between the base plate 201 and the brush head body 1. The first conductive element 204 and the connecting wire 302 are both electrically connected to the first circuit board 4. The first circuit board 4 is located within the accommodating space enclosed by the base plate 201 and the brush head body 1. By providing the first conductive element 204 and the connecting wire 302 with the first circuit board 4, and by providing lines connecting the first conductive element 204 and the connecting wire 302, the first circuit board 4 provides connection points for the first conductive element 204 and the connecting wire 302. The first conductive element 204 and the connecting wire 302 are electrically connected through the first circuit board 4, resulting in a stable structure, high reliability, and ease of assembly. It should be noted that electrical connection refers to the ability to allow current to pass through, such as through soldering or terminal plugging.

[0066] Specifically, the first conductive component 204 and the connecting wire 302 are respectively welded to the first circuit board 4. The welding connection method has good stability and the electrical connection performance after welding is relatively stable.

[0067] Preferably, the first circuit board 4 is a printed circuit board assembly (PCBA), which is technologically mature, readily available, and has high reliability.

[0068] In one embodiment, one side of the first circuit board 4 is soldered to the first conductive element 204 and the other side is soldered to the connecting line 302. Further integration Figure 6 and Figure 9 As shown, the first circuit board 4 has a soldering portion 401 on the side facing the heating element 3. The soldering portion 401 protrudes from the surface of the first circuit board 4 and is used for soldering to the connecting wire 302. The first circuit board 4 also has through holes corresponding to the first conductive element 204. The first conductive element 204 is inserted into the through holes and then soldered to the first circuit board 4. Specifically, there are two soldering portions 401, each soldered to one connecting wire 302.

[0069] In one embodiment, further combination Figure 6 and Figure 9As shown, the first circuit board 4 is annular and sleeved on the outside of the column 202. It should be noted that the first circuit board 4 has through holes, which makes the first circuit board 4 annular. The annular first circuit board 4 is sleeved on the outside of the column 202 and placed on the base plate 201. The column 202 limits the position of the first circuit board 4, which facilitates assembly and ensures the stability of the relative positional relationship between the first circuit board 4 and the base 2. This prevents the first circuit board 4 from shaking inside the brush head body 1, reduces noise, and ensures the stability of the electrical connection between the first conductive component 204 and the connecting wire 302 and the first circuit board 4, avoiding poor electrical connection.

[0070] In one embodiment, further combination Figure 5 and Figure 9 As shown, the base 2 also includes an annular protrusion 203 disposed on the base plate 201. The brush head body 1 has an annular groove 104 that mates with the protrusion 203 at one end facing the base plate 201. The first circuit board 4 is located between the protrusion 203 and the column 202, and the inner circumferential surface of the protrusion 203 mates with the outer edge of the first circuit board 4. It should be noted that the protruding edge is formed by the surface of the base plate 201 facing the brush head body 1. The column 202 is located at the center of the base plate 201, that is, the column 202 is located inside the annular protruding edge 203. By setting the annular protruding edge 203 on the base plate 201 of the base 2 and setting the annular groove 104 corresponding to the protruding edge 203 on the brush head body 1, the connection between the base plate 201 and the brush head body 1 can be realized through the insertion and cooperation of the protruding edge 203 and the groove 104. It can also ensure the sealing between the base plate 201 and the brush head body 1. At the same time, by setting the outer edge of the first circuit board 4 to cooperate with the inner circumferential surface of the protruding edge 203, the protruding edge 203 radially limits the first circuit board 4. Combined with the cooperation of the inner edge of the first circuit board 4 with the outer circumferential surface of the column 202, the first circuit board 4 is fixed between the protruding edge 203 and the column 202, which further improves the stability of the first circuit board 4.

[0071] According to an embodiment of the present invention, another aspect also provides an electric toothbrush, such as... Figures 7 to 15 As shown, the electric toothbrush includes a body and the aforementioned brush head structure 100. The body includes a housing 5 and a power supply assembly 6 installed within the housing 5. A second conductive element 7 is provided at the first end of the housing 5. The power supply assembly 6 has a power source 601, and the second conductive element 7 is electrically connected to the power source 601. The brush head structure 100 is detachably connected to the body. When the brush head structure 100 is connected to the body, the first conductive element 204 on the brush head structure 100 is electrically connected to the second conductive element 7. The structure of the first end of the housing 5 is as follows... Figure 11As shown, this refers to the end of the housing 5 near the brush head structure 100. By detachably connecting the brush head structure 100 to the body, it is easy to store and use. When the brush head structure 100 is connected to the body, the first conductive element 204 and the second conductive element 7 on the brush head structure 100 are electrically connected, so that the heating element 3 is electrically connected to the power supply 601 of the power supply component 6. When the power supply 601 is turned on, it can supply power to the heating element 3, so that the heating element 3 heats up after receiving power, thereby heating the brush head body 1 and improving the comfort of brushing teeth.

[0072] Optionally, a switch to control the on / off state of the power supply 601 can be installed on the device body; alternatively, instead of a physical switch, a wireless receiver connected to the power supply 601 can be installed inside the device body. A control signal can be sent via a remote APP. After receiving the remote wireless signal, the wireless receiver controls the power supply 601 to start supplying power. Specifically, the remote APP can be set to start heating before brushing to improve brushing comfort, or to start heating after brushing to evaporate residual moisture on the toothbrush and prevent bacterial growth.

[0073] Specifically, there are two second conductive elements 7 and two first conductive elements 204, with each of the two second conductive elements 7 corresponding to one of the two first conductive elements 204.

[0074] In one embodiment, the second conductive element 7 is a spring needle. It should be noted that the spring needle (pogopin) consists of three basic components: a needle tip, a spring, and a needle tube. After the brush head structure 100 is installed on the machine body, the first conductive element 204 on the brush head structure 100 presses the needle tip of the spring needle, compressing the spring needle. The spring provides a stable elastic force, ensuring close contact between the needle tip and the first conductive element 204. That is, the elastic force of the spring inside the spring needle ensures that the first conductive element 204 and the second conductive element 7 always maintain good contact. Even during the vibration operation of the brush head structure 100, the first conductive element 204 and the second conductive element 7 still have a stable electrical connection, ensuring stable transmission of the current signal. This guarantees the heating effect of the heating element 3 on the brush head body 1, resulting in high reliability. Furthermore, the spring needle is small in size and has high precision.

[0075] In one embodiment, the fuselage further includes: a mechanism support 9, which is installed inside the housing 5, and a power supply component 6 is installed on the mechanism support 9. The mechanism support 9 provides an installation position and support for the power supply component 6, thereby improving the stability of the fuselage structure.

[0076] Preferably, the movement support 9 and the housing 5 are fixed by a snap fastener, which is simple in structure and easy to process and assemble.

[0077] In one embodiment, a second circuit board 701 is also provided inside the housing 5, and a second conductive element 7 is connected to the second circuit board 701. The second circuit board 701 is fixedly connected to the mechanism support 9 to ensure the stability of the second circuit board 701, thereby ensuring the stability of the circuit connection.

[0078] In one embodiment, the device further includes a vibration unit 8, which includes a vibration part 802 and a vibration rod 801. The vibration part 802 is installed inside the core support 9, and the vibration rod 801 is connected to the vibration part 802. The vibration part 802 drives the vibration rod 801 to vibrate. The vibration rod 801 extends out of the first end of the housing 5. When the brush head structure 100 is inserted into the vibration rod 801, the vibration rod 801 drives the brush head structure 100 to vibrate, thereby achieving the automatic cleaning effect of the electric toothbrush on teeth. The vibration rod 801 is spaced apart from the second conductive element 7, and the vibration of the vibration rod 801 does not affect the electrical connection between the second conductive element 7 and the first conductive element 204.

[0079] Preferably, the vibration unit 8 is a motor, and the vibration rod 801 is a motor shaft.

[0080] In one embodiment, the second circuit board 701 includes a ring portion 7011 and an extension portion 7012. The ring portion 7011 is located on the mechanism support 9 near one end of the brush head structure 100 and is circumferentially arranged around the vibration rod 801. The second conductive element 7 is connected to the ring portion 7011. The extension portion 7012 extends out from a portion of the outer ring of the ring portion 7011. The extension portion 7012 is attached to the outside of the mechanism support 9 and the side of the extension portion 7012 away from the ring portion 7011 is electrically connected to the power supply component 6. The second circuit board 701 is composed of an interconnected ring 7011 and an extension 7012. The ring 7011 is annular, which is convenient to be fitted onto the outer periphery of the vibration rod 801. The extension 7012 extends to the location of the power supply component 6 and is electrically connected to the power supply component 6, so as to realize the electrical connection between the second conductive element 7 on the ring 7011 and the power supply component 6. The extension 7012 fits against the outside of the mechanism support 9, which can fully adapt to the internal space of the housing 5. The structure is simple and the design is reasonable.

[0081] In one embodiment, the second circuit board 701 is fixed to the mechanism bracket 9 with double-sided adhesive, which increases the relative stability between the second circuit board 701 and the mechanism bracket 9, improves the neatness of the appearance after the second circuit board 701 is connected to the mechanism bracket 9, and facilitates installation into the housing 5.

[0082] In one embodiment, the second circuit board 701 is a flexible printed circuit (FPC) to facilitate the extension 7012 to be attached to the outside of the mechanism support 9 and to be connected to the power supply component 6.

[0083] In one embodiment, the power supply component further includes a motherboard 602. A power supply 601 is installed inside the mechanism bracket 9, and the motherboard 602 is installed outside the mechanism bracket 9. The motherboard 602 has lines connected to a second circuit board 701, and the power supply 601 is electrically connected to the second circuit board 701 through the lines on the motherboard 602. The motherboard 602 also has lines connected to a vibration unit 8, and the power supply 601 is electrically connected to the vibration unit 8 through the motherboard 602 to supply power to the vibration unit 8. Preferably, the power supply 601 is a motor.

[0084] In one embodiment, a button 501 is provided on the outside of the housing 5 to control the on / off of the circuit between the power supply component 6 and the vibration unit 8, so as to control the start / stop and speed of the vibration part 802.

[0085] In one embodiment, the body further includes a silicone sleeve 10, which is disposed on the core support 9 at one end near the brush head structure 100, so that the core support 9 and the housing 5 are in elastic contact. The silicone sleeve 10 protects the core support 9 and has a shock absorption effect, avoiding damage to the components caused by mechanical collision between the core support 9 and the housing 5 during the vibration of the vibration unit 8, thereby increasing the service life, reducing vibration, and improving the user experience.

[0086] In one embodiment, the silicone sleeve 10 is further provided with a first through hole 1001 corresponding to the vibration rod 801 and a second through hole 1002 corresponding to the second conductive element 7. The vibration rod 801 passes through the first through hole 1001, the ring portion 7011 is located between the silicone sleeve 10 and the core support 9, and the second conductive element 7 passes through the second through hole 1002, so that the vibration rod 801 and the second conductive element 7 can pass through the silicone sleeve 10 and then extend out of the housing 5, thereby realizing the connection with the brush head structure 100.

[0087] The composition and usage of the electric toothbrush in this embodiment are as follows:

[0088] First, install the power supply 601, motherboard 602 and vibration unit 8 with the mechanism bracket 9. Then, fix the second circuit board 701 to the mechanism bracket 9 with double-sided tape. Connect the extension 7012 to the motherboard 602 of the power supply component 6. Then install the silicone sleeve 10 and assemble it into a mechanism component.

[0089] The movement assembly is then assembled into the housing 5, and the movement assembly is fixed to the housing 5 by clips to form the body;

[0090] The heating element 3 is installed in the brush head body 1, the first conductive element 204 is installed in the base 2 and soldered to the first circuit board 4, and the positive and negative wires of the heating element 3 are soldered to the first circuit board 4 to assemble the brush head assembly.

[0091] Then, insert the brush head assembly into the vibrating rod 801, and the first conductive element 204 compresses the second conductive element 7;

[0092] Finally, the power supply 601 is turned on via a remote APP or switch. The heating element 3 heats up after being powered on, thereby heating the brush head body 1.

[0093] The electric toothbrush of this embodiment can heat the brush head body 1, which is more user-friendly in cold weather and when there is no hot water. Users with sensitive mouths and children will not feel discomfort caused by the brush head being too cold when using it, thus increasing the user's comfort when using the electric toothbrush.

[0094] It is understood that the heating structure of this embodiment is also applicable to heating spoons, heating the outer shell of water cups, etc.

[0095] 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 brush head structure, characterized in that, include: The brush head body (1) includes a brush head (111), and a receiving cavity (101) with an opening at one end is formed inside the brush head body (1), with the opening end of the receiving cavity (101) facing away from the brush head (111). The base (2) is located at the open end of the brush head body (1) and is detachably connected to the brush head body (1). The base (2) includes a base plate (201). At least two first conductive elements (204) are provided on the base plate (201), and the first conductive elements (204) penetrate the base plate (201). A heating element (3) is disposed in the receiving cavity (101), and the heating element (3) is electrically connected to the first conductive element (204).

2. The brush head structure according to claim 1, characterized in that, The receiving cavity (101) includes a first cavity (102) and a second cavity (103) that are connected to each other. The end of the second cavity (103) away from the first cavity (102) forms the opening end of the brush head body (1). The heating element (3) includes a heating part (301) and a connecting wire (302). The heating part (301) is located in the first cavity (102) and is in contact with the inner wall of the first cavity (102). The connecting wire (302) is located in the second cavity (103).

3. The brush head structure according to claim 2, characterized in that, The heating element (301) includes a heating head (3011) and a heating rod (3012). The brush head body (1) includes a brush head (111) and a brush rod (112). The brush rod (112) includes a first rod segment (1121) and a second rod segment (1122). The first rod segment (1121) is connected between the brush head (111) and the second rod segment (1122). The second rod segment (1122) corresponds to the second cavity (103). The shape of the heating head (3011) is adapted to the shape of the brush head (111), and the shape of the heating rod (3012) is adapted to the shape of the first rod segment (1121).

4. The brush head structure according to claim 2, characterized in that, The brush head body (1) is injection molded to encapsulate the heating element (301) of the heating element (3); And / or, the base (2) is injection molded around the outer periphery of the first conductive element (204).

5. The brush head structure according to any one of claims 2 to 4, characterized in that, The base (2) also includes a column (202) connected to one side of the base plate (201). The column (202) is detachably inserted into the second cavity (103). An opening is provided on one end of the column (202) away from the brush head body (1) to form an insertion cavity (2021) in the column (202).

6. The brush head structure according to claim 5, characterized in that, The second cavity (103) includes a main cavity (1031) and a side cavity (1032), the side cavity (1032) being connected to the outer periphery of the main cavity (1031), the main cavity (1031) being adapted to accommodate the column (202), and the side cavity (1032) being adapted to accommodate the connecting line (302).

7. The brush head structure according to claim 5, characterized in that, The brush head structure further includes: a first circuit board (4), which is disposed between the base plate (201) and the brush head body (1), and the first conductive element (204) and the connecting line (302) are electrically connected to the first circuit board (4).

8. The brush head structure according to claim 7, characterized in that, The first circuit board (4) is ring-shaped and sleeved on the outside of the column (202); And / or, the base (2) further includes an annular protrusion (203) disposed on the base plate (201), and an annular groove (104) that mates with the protrusion (203) is provided on one end of the brush head body (1) facing the base plate (201). The first circuit board (4) is located between the protrusion (203) and the column (202), and the inner circumferential surface of the protrusion (203) mates with the outer edge of the first circuit board (4).

9. An electric toothbrush, characterized in that, include: The body includes a housing (5) and a power supply component (6) installed inside the housing (5). A second conductive element (7) is provided at the first end of the housing (5). The power supply component (6) has a power source (601). The second conductive element (7) is electrically connected to the power source (601). The brush head structure according to any one of claims 1 to 8, wherein the brush head structure is detachably connected to the body, and when the brush head structure is connected to the body, the first conductive element (204) on the brush head structure is electrically connected to the second conductive element (7).

10. The electric toothbrush according to claim 9, characterized in that, The second conductive element (7) is a spring pin.

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