A waterproof electric toothbrush and its processing mold and processing method

Abstract

The present invention discloses a waterproof electric toothbrush and a processing mold and processing method thereof, wherein the waterproof electric toothbrush comprises a toothbrush head, a shell and a tail cover, the toothbrush head is composed of a bristle mounting part and a power support part, the bristle mounting part and the power support part are integrally formed into an internal hollow cavity, a disinfection lamp PCB board and a vibration motor are installed in the cavity, a plurality of disinfection lamps are installed on the disinfection lamp PCB board, the power support part is far away from the bristle mounting part and is sealed and connected to the shell through a power support waterproof ring, a main circuit board and a battery are arranged inside the shell, a function button electrically connected to the main circuit board is arranged on one side of the main circuit board, the outer side of the function button is coated with a light-transmitting waterproof soft glue, and the tail cover is sealed and connected to the shell through the tail cover waterproof ring. The waterproof electric toothbrush in the present invention has a simple structure, can effectively remove dental plaque and oral bacteria, and has a good waterproof effect, will not seep water during long-term use, and has high safety.

Description

Technical Field

[0001] The invention relates to the technical field of waterproof electric toothbrushes, in particular to a waterproof electric toothbrush and a processing mold and a processing method thereof. Background Art

[0002] Generally, people take food for activities. The taken food is mixed with saliva in the mouth through the chewing process and then transmitted to the digestive organs. The food entering the mouth is crushed by the up and down movement of the lower jaw, and the teeth arranged relatively contact each other. In this process, food residues may be caught between teeth or between teeth and gums. If the food caught between teeth is not removed in time, the food will be decomposed by bacteria in the oral cavity and become corrupt, thereby causing various oral diseases, bad breath, etc. In order to prevent the above problems, a toothbrush for brushing teeth is proposed.

[0003] At present, the toothbrushes on the market are divided into manual toothbrushes and electric toothbrushes, each of which has its own shortcomings. Manual toothbrushes are cheap, and it is difficult to completely remove dental plaque due to different brushing habits; electric toothbrushes can effectively remove dental plaque, but their waterproof effect is poor. Existing electric toothbrushes are only waterproofed by the design of glue filling. However, there are great limitations to using glue filling technology to achieve waterproofing, such as the inability to dissipate heat from the main body, all electronic components cannot be replaced and repaired, the glue takes a long time to solidify, a large number of auxiliary fixtures are required, and the production cycle is long. In addition, when the main body of the electric toothbrush is soaked in toothpaste, each toothpaste has a part of corrosiveness. The glue adheres to the surface of various materials and is soaked in water. After a long time, the glue will fall off the surface of the contact object, and water will seep in from the gaps created after the fall, which will cause the internal circuit board to lose control and the battery to short-circuit when the main body is powered on, causing safety hazards. Summary of the invention

[0004] The purpose of the present invention is to provide a waterproof electric toothbrush and its processing mold and processing method. The waterproof electric toothbrush has a simple structure and can effectively remove dental plaque and oral bacteria. At the same time, it has the advantages of good waterproof effect, no water seepage during long-term use, and high safety, thereby solving the problems raised by the above technical background.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a waterproof electric toothbrush, comprising a toothbrush head, a shell and a tail cover, the toothbrush head is composed of a bristle mounting part and a power support part, the bristle mounting part and the power support part are integrally formed into an internal hollow cavity, a disinfection lamp PCB board and a vibration motor are installed in the cavity, a plurality of disinfection lamps are installed on the disinfection lamp PCB board, each of the disinfection lamps is provided with a disinfection lamp light-transmitting hole waterproof plug, the disinfection lamp light-transmitting hole waterproof plug penetrates the bristle mounting part and extends to the outside of the bristle mounting part, toothbrush bristles are installed on the outside of the bristle mounting part, the power support part is sealed and connected to the shell through a power support waterproof ring at one end away from the bristle mounting part, a main circuit board and a battery are arranged inside the shell, the battery, the disinfection lamp PCB board and the vibration motor are all electrically connected to the main circuit board, a function button electrically connected to the main circuit board is arranged on one side of the main circuit board, the outer side of the function button is coated with a light-transmitting waterproof soft glue, the light-transmitting waterproof soft glue is integrally injection molded with the shell, the tail cover is located at the bottom of the shell, and the tail cover is sealed and connected to the shell through the tail cover waterproof ring.

[0006] Preferably, a blind hole is provided on the bristle mounting portion, the inner diameter of the blind hole gradually tightens from the inside to the outside, and one end of the toothbrush bristle is mounted in the blind hole.

[0007] Preferably, the waterproof plug of the light-transmitting hole of the disinfection lamp, the waterproof ring of the power bracket and the waterproof ring of the tail cover are all made of silicone material.

[0008] Preferably, a charging interface is provided at the bottom of the tail cover, and the charging interface is electrically connected to the main circuit board.

[0009] Preferably, both ends of the battery are provided with battery springs, and the battery springs are connected to the positive and negative ends of the main circuit board through wires.

[0010] Preferably, the light-transmitting waterproof soft glue is TPE light-transmitting waterproof soft glue, and the light-transmitting waterproof soft glue is printed with indication marking parts corresponding to the function keys one by one, and the indication marking parts at least include a power indicator light mark and a power switch indication mark.

[0011] The present invention provides a processing mold for a waterproof electric toothbrush, the processing mold comprises a panel, a nozzle plate, an A plate, a slider seat, a B plate, an ejector panel, an ejector bottom plate, a square iron and a bottom plate, the panel is mounted on the nozzle plate, the A plate is mounted on the other side, the B plate is located below the A plate, and a slider groove is provided on the upper surface of the B plate, the slider seat is mounted in the slider groove, the slider seat comprises a slider seat body, and an oil cylinder and a slider arranged at both ends of the slider seat body, the output end of the oil cylinder penetrates the slider seat body and is fixedly connected to the slider, A slide insert is arranged on the A plate above the slide, and the slide insert, the A plate, the B plate and the slide cooperate to form two injection cavities, and the two injection cavities are symmetrically distributed in the mold. Two square irons are arranged, and the upper and lower ends of the two square irons are respectively fixedly connected to the B plate and the bottom plate to form a cavity with openings at both ends and a hollow interior. The ejector panel and the ejector bottom plate are arranged in the cavity, and a plurality of ejectors are arranged on the ejector bottom plate, and the plurality of ejectors penetrate the ejector panel and the B plate in sequence from bottom to top and then contact and connect with the slide seat.

[0012] Preferably, a nozzle is provided on the sprue plate, one end of the nozzle penetrates the panel and extends to the outside of the panel, and the other end is connected with the injection cavity through a sprue flow channel.

[0013] The present invention also provides a method for processing a waterproof electric toothbrush, the method comprising the following steps:

[0014] Step 1: Use an integrally formed PC material to injection mold a toothbrush head, a shell, and a tail cover, respectively. The toothbrush head is injection molded with a blind hole and an internal cavity, and toothbrush bristles are placed in the blind hole. At the same time, a disinfection lamp PCB board and a vibration motor are installed in the internal cavity of the toothbrush head;

[0015] Step 2: Use the above-mentioned processing mold to inject light-transmitting and waterproof soft glue on the shell;

[0016] Step 3: Install the main circuit board and battery in the housing in step 2, and connect the two ends of the battery to the positive and negative ends of the main circuit board through the battery spring;

[0017] Step 4: Install the seal so that the toothbrush head is sealed to the shell, and the shell is sealed to the tail cover.

[0018] Preferably, the specific steps of injection molding the light-transmitting and waterproof soft glue on the outer shell in step 2 are:

[0019] S1, loading the mold, loading the mold into the injection molding machine;

[0020] S2. Install the shell, open 10mm on the nozzle plate, and keep the A plate and B plate 25mm away from the slide. The oil cylinder pushes the slide out 30mm, and the ejector on the ejector bottom plate pushes the slide seat out 30mm. Finally, put the shell on the slide.

[0021] S3, closing the mold, resetting the nozzle plate, A plate, B plate, slide and ejector bottom plate, so that the A plate, B plate, slide and slide insert form an injection mold cavity;

[0022] S4, preheating, heating the nozzle plate to 70-90℃;

[0023] S5, injection molding of light-transmitting waterproof soft rubber, heating the TPE rubber material to 120°C, injecting the liquid TPE rubber material into the injection molding cavity through the nozzle and the sprue flow channel, and molding the light-transmitting waterproof soft rubber on the shell;

[0024] S6, demoulding, the nozzle plate is opened 10mm, the A plate is 130mm, the B plate is 25mm away from the slide, the ejector on the ejector bottom plate pushes the slide seat out 30mm, and the finished product is taken out;

[0025] S7, printing the indication mark portion, placing the finished product in S5 on a screen printing machine to screen print the indication mark portion.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. The present invention provides a waterproof electric toothbrush, which consists of a toothbrush head, a shell and a tail cover. It has a simple structure and is easy to assemble internal components. A disinfection lamp PCB board is arranged in the toothbrush head, and a disinfection lamp is installed on the disinfection lamp PCB board. The light of the disinfection lamp is emitted through the waterproof plug of the disinfection lamp light transmission hole to achieve disinfection and sterilization, which can effectively remove dental plaque and oral bacteria.

[0028] 2. The present invention arranges a waterproof plug for the light-transmitting hole of the disinfection lamp, a waterproof ring for the power bracket and a waterproof ring for the tail cover. The waterproof plug for the light-transmitting hole of the disinfection lamp, the waterproof ring for the power bracket and the waterproof ring for the tail cover are all made of silicone material, so that the waterproof effect between the toothbrush head and the shell, and between the shell and the tail cover is good. At the same time, the present invention adopts injection molding of light-transmitting waterproof soft glue on the shell. The light-transmitting waterproof soft glue can completely cover the function buttons, which can effectively prevent water from penetrating into the main circuit board, causing a circuit short circuit and causing a safety accident, thereby extending the service life of the waterproof electric toothbrush.

[0029] 3. The processing mold of the waterproof electric toothbrush in the present invention has a simple structure, reasonable design and low cost. By arranging an oil cylinder on the slide seat, the oil cylinder drives the slide to demould, which saves time and effort and achieves the effect of easy demoulding.

[0030] 4. The processing method of the present invention first heats the nozzle plate to 70-90°C and then injects TPE rubber, which can effectively prevent the TPE rubber from cracking due to thermal expansion and contraction, affecting the quality of the injection molded product. The injected TPE rubber enters the injection molding cavity through the nozzle and the nozzle flow channel, and is integrally formed with the shell in the injection molding cavity, effectively improving the waterproof effect of the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural diagram of the waterproof electric toothbrush of the present invention;

[0032] Figure 2 is a cross-sectional view of the waterproof electric toothbrush of the present invention;

[0033] Figure 3 For the present invention Figure 2 A magnified view of middle;

[0034] Figure 4 For the present invention Figure 2 Enlarged view of middle B;

[0035] Figure 5 It is a front view of the processing mold of the present invention;

[0036] Figure 6 An exploded view of the processing mold of the present invention;

[0037] Figure 7 It is a structural diagram of the slide seat in the processing mold of the present invention.

[0038] The reference numerals and names in the figures are as follows:

[0039] 1. Toothbrush head; 11. Bristle mounting part; 12. Power support part; 13. Disinfection lamp PCB board; 14. Vibration motor; 15. Disinfection lamp; 16. Waterproof plug for light-transmitting hole of disinfection lamp; 17. Toothbrush bristles; 18. Blind hole; 2. Shell; 3. Tail cover; 31. Charging port; 4. Power support waterproof ring; 5. Main circuit board; 6. Battery; 7. Function button; 8. Light-transmitting waterproof soft rubber; 81. Indicator mark part; 81 1. Power indicator light mark; 812. Power switch indicator mark; 9. Tail cover waterproof ring; 10. Battery shrapnel; 100. Panel; 101. Inlet plate; 102. A plate; 103. Slider seat; 1031. Slider seat body; 1032. Oil cylinder; 1033. Slider; 104. B plate; 105. Ejector panel; 106. Ejector bottom plate; 107. Square iron; 108. Bottom plate; 109. Slider slot; 1010. Nozzle; 1011. Inlet flow channel; 1012. Ejector; 1013. Slider insert. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] See also Figures 1 to 4, an embodiment of the present invention: a waterproof electric toothbrush, which consists of a toothbrush head 1, a shell 2 and a tail cover 3, has a simple structure and is easy to assemble internal components, wherein the toothbrush head 1 consists of a bristle mounting part 11 and a power support part 12, the bristle mounting part 11 and the power support part 12 integrally form an internal hollow cavity, a disinfection lamp PCB board 13 and a vibration motor 14 are installed in the cavity, a plurality of disinfection lamps 15 are installed on the disinfection lamp PCB board 13, each of the disinfection lamps 15 is provided with a disinfection lamp light-transmitting hole waterproof plug 16, the disinfection lamp light-transmitting hole waterproof plug 16 penetrates the bristle mounting part 11 and extends to the outside of the bristle mounting part 11, and the light of the disinfection lamp 15 passes through the disinfection lamp light-transmitting hole waterproof plug 16 is ejected to disinfect and sterilize the oral cavity, which can effectively remove dental plaque and oral bacteria. Toothbrush bristles 17 are installed on the outside of the bristle mounting part 11. The power support part 12 is sealed and connected to the shell 2 at one end away from the bristle mounting part 11 through a power bracket waterproof ring 4. A main circuit board 5 and a battery 6 are arranged inside the shell 2. The battery 6, the disinfection lamp PCB board 13 and the vibration motor 14 are all electrically connected to the main circuit board 5. A function button 7 electrically connected to the main circuit board 5 is arranged on one side of the main circuit board 5. The outside of the function button 7 is coated with a light-transmitting waterproof soft glue 8. The light-transmitting waterproof soft glue 8 is integrally injection-molded with the shell 2. The tail cover 3 is located at the bottom of the shell 2, and the tail cover 3 is sealed and connected to the shell 2 through a tail cover waterproof ring 9.

[0042] The waterproof electric toothbrush obtained by adopting the above technical solution has a simple structure, can effectively remove dental plaque and oral bacteria, has good waterproof effect, will not leak water after long-term use, has high safety, and is worthy of promotion and application. The specific structure is explained below:

[0043] Specifically, a blind hole 18 is provided on the bristle mounting portion 11 , and the inner diameter of the blind hole 18 gradually tightens from the inside to the outside. One end of the toothbrush bristle 17 is installed in the blind hole 18 . The blind hole 18 with this structure can effectively prevent the toothbrush bristle 17 from falling off from the blind hole 18 .

[0044] Specifically, the disinfection lamp light-transmitting hole waterproof plug 16, the power bracket waterproof ring 4 and the tail cover waterproof ring 9 are all made of silicone material. Compared with traditional sealing materials, silicone material has better sealing effect and better corrosion resistance.

[0045] Specifically, a charging interface 31 is provided at the bottom of the tail cover 3, and the charging interface 31 is electrically connected to the main circuit board 5. The battery 6 in the waterproof electric toothbrush is charged by connecting a power adapter through the charging interface 31. It should be noted that the battery 6 in this embodiment is a 18650 lithium battery.

[0046] Specifically, both ends of the battery 6 are provided with battery shrapnel 10, and the battery shrapnel 10 is connected to the positive and negative ends of the main circuit board 5 through a wire. Specifically, the light-transmitting waterproof soft glue 8 is TPE light-transmitting waterproof soft glue, and the light-transmitting waterproof soft glue 8 is printed with an indication mark portion 81 corresponding to the function button 7 one by one, and the indication mark portion 81 at least includes a power indicator light mark 811 and a power switch indication mark 812.

[0047] See also Figures 5 to 7 The present invention provides a processing mold for a waterproof electric toothbrush, the processing mold comprises a panel 100, a nozzle plate 101, an A plate 102, a slider seat 103, a B plate 104, an ejector panel 105, an ejector bottom plate 106, a square iron 107 and a bottom plate 108, the panel 100 is installed on the nozzle plate 101, the A plate 102 is installed on the other side, the B plate 104 is located below the A plate 102, and a slider groove 109 is opened on the upper end surface of the B plate 104, the slider seat 103 is installed in the slider groove 109, the slider seat 103 comprises a slider seat body 1031, and a cylinder 1032 and a slider 1033 arranged at both ends of the slider seat body 1031, the output end of the cylinder 1032 passes through the slider seat body 1031 and is connected to the slider The slide 1033 is fixedly connected, and a slide insert 1013 is arranged on the A plate 102 above the slide 1033. The slide insert 1013, the A plate 102, the B plate 104 and the slide 1033 cooperate to form two injection cavities, and the two injection cavities are symmetrically distributed in the mold. Two square irons 107 are provided, and the upper and lower ends of the two square irons 107 are respectively fixedly connected to the B plate 104 and the bottom plate 108 to form a cavity with openings at both ends and a hollow interior. The ejector panel 105 and the ejector bottom plate 106 are arranged in the cavity, and a plurality of ejectors 1012 are arranged on the ejector bottom plate 106. The plurality of ejectors 1012 penetrate the ejector panel 105 and the B plate 104 from bottom to top in sequence and then contact and connect with the slide seat 103.

[0048] Specifically, a nozzle 1010 is provided on the sprue plate 101 , one end of the nozzle 1010 penetrates the panel 100 and extends to the outside of the panel 100 , and the other end is connected to the injection cavity through a sprue flow channel 1011 .

[0049] See also Figures 1 to 7 The present invention also provides a method for processing a waterproof electric toothbrush, the processing method comprising the following steps:

[0050] Step 1: A toothbrush head 1, a housing 2 and a tail cover 3 are respectively injection-molded with an integrally formed PC material. A blind hole 18 and an internal cavity are injection-molded on the toothbrush head 1. Toothbrush bristles 17 are loaded into the blind hole 18. Meanwhile, a disinfection lamp PCB board 13 and a vibration motor 14 are installed in the internal cavity of the toothbrush head 1.

[0051] Step 2: Use the above-mentioned processing mold to injection-mold the light-transmitting and waterproof soft glue 8 on the housing 2;

[0052] Step 3: Install the main circuit board 5 and the battery 6 in the housing 2 in step 2, connect the two ends of the battery 6 to the positive and negative ends of the main circuit board 5 through the battery spring 10, and supply power to the main circuit board 5;

[0053] Step 4: Install the seal so that the toothbrush head 1 is sealed and connected to the shell 2, and the shell 2 and the tail cover 3 are sealed and connected.

[0054] Specifically, the specific steps of injection molding the light-transmitting and waterproof soft glue 8 on the housing 2 in step 2 are as follows:

[0055] S1, loading the mold, loading the mold into the injection molding machine;

[0056] S2, install the housing 2, open the nozzle plate 101 by 10mm, move the A plate 102 and the B plate 104 away from the slide 1033 and move up by 25mm, the oil cylinder 1032 pushes the slide 1033 out by 30mm, the ejector pin 1012 on the ejector base plate 106 pushes the slide seat 103 out by 30mm, and finally put the housing 2 on the slide 1033;

[0057] S3, closing the mold, resetting the nozzle plate 101, the A plate 102, the B plate 104, the slide 1033 and the ejector bottom plate 106, so that the A plate 102, the B plate 104, the slide 1033 and the slide insert 1013 form an injection molding cavity;

[0058] S4, preheating, heating the nozzle plate 101 to 70-90°C;

[0059] S5, injection molding the light-transmitting waterproof soft glue 8, heating the TPE glue material to 120°C, injecting the liquid TPE glue material into the injection molding cavity through the nozzle 1010 and the sprue flow channel 1011, and molding the light-transmitting waterproof soft glue 8 on the housing 2;

[0060] S6, demoulding, the nozzle plate 101 is opened up by 10mm, the A plate 102 is moved up by 130mm, the B plate is 25mm away from the slider 1033, the ejector pin 1012 on the ejector base plate 106 pushes the slider seat 103 out by 30mm, and the finished product is taken out;

[0061] S7 , printing the indication mark portion 81 , placing the finished product in S5 on a screen printing machine to screen print the indication mark portion 81 .

[0062] By adopting the above-mentioned processing method, the sprue plate 101 is first heated to 70-90°C and then the TPE rubber is injected, which can effectively prevent the TPE rubber from cracking due to thermal expansion and contraction, thereby affecting the quality of the injection molded product. The injected TPE rubber enters the injection molding cavity through the nozzle 1010 and the sprue flow channel 1011, and is integrally formed with the shell 2 in the injection molding cavity, thereby effectively improving the waterproof effect of the shell 2.

[0063] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A waterproof electric toothbrush, comprising a toothbrush head (1), a housing (2) and a tail cover (3), characterized in that: The toothbrush head (1) is composed of a bristle mounting portion (11) and a power support portion (12); the bristle mounting portion (11) and the power support portion (12) are integrally formed into an internal hollow cavity; a disinfection lamp PCB board (13) and a vibration motor (14) are installed in the cavity; a plurality of disinfection lamps (15) are installed on the disinfection lamp PCB board (13); each of the disinfection lamps (15) is provided with a disinfection lamp light transmission hole waterproof plug (16); the disinfection lamp light transmission hole waterproof plug (16) is provided with a disinfection lamp light transmission hole waterproof plug (16); ) penetrates the bristle mounting portion (11) and extends to the outside of the bristle mounting portion (11), and the outside of the bristle mounting portion (11) is provided with toothbrush bristles (17), and the end of the power support portion (12) away from the bristle mounting portion (11) is sealed and connected to the housing (2) through the power support waterproof ring (4), and the housing (2) is provided with a main circuit board (5) and a battery (6), and the battery (6), the disinfection lamp PCB board (13) and the vibration motor (14) are all electrically connected to the main circuit board (5). A function button (7) electrically connected to the main circuit board (5) is disposed on one side of the main circuit board (5); the outer side of the function button (7) is coated with a light-transmitting waterproof soft glue (8); the light-transmitting waterproof soft glue (8) and the housing (2) are integrally injection-molded; the tail cover (3) is located at the bottom of the housing (2); and the tail cover (3) is sealed and connected to the housing (2) via a tail cover waterproof ring (9); a blind hole (18) is provided on the bristle mounting portion (11); the inner diameter of the blind hole (18) gradually decreases from the inside to the outside, One end of the toothbrush bristle (17) is installed in the blind hole (18); the disinfection lamp light-transmitting hole waterproof plug (16), the power bracket waterproof ring (4) and the tail cover waterproof ring (9) are all made of silicone material; a charging interface (31) is provided at the bottom of the tail cover (3); the charging interface (31) is electrically connected to the main circuit board (5); both ends of the battery (6) are provided with battery shrapnel (10); the battery shrapnel (10) is connected to the positive and negative ends of the main circuit board (5) through a wire.

2. A waterproof electric toothbrush according to claim 1, characterized in that: The light-transmitting waterproof soft glue (8) is a TPE light-transmitting waterproof soft glue, and the light-transmitting waterproof soft glue (8) is printed with an indication mark portion (81) corresponding to the function key (7) one by one, and the indication mark portion (81) at least includes a power indicator light mark (811) and a power switch indication mark (812).

Images