Light irradiation sanitary device using a PCB-equipped motor
The integration of a vibration motor directly onto the PCB within the light-irradiating sanitary device addresses noise and stability issues in existing electric toothbrushes, enhancing user experience and manufacturing efficiency.
Patent Information
- Application Number
- JP2024566705
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2022-05-09
- Filing Date
- 2023-05-09
- Publication Date
- 2025-05-20
AI Technical Summary
Existing electric toothbrushes with vibration motors for antibacterial light irradiation suffer from increased noise and poor vibration stability due to their three-piece PCB structure, which also raises costs and manufacturing complexity.
A light-irradiating sanitary device using a PCB-mounted motor, where a vibration motor is soldered to the PCB and integrated with a light source unit and toothbrush plate, reducing noise and improving vibration stability while simplifying the manufacturing process.
The configuration reduces noise and enhances user convenience by improving vibration stability, while also simplifying the manufacturing process, reducing costs, and increasing productivity by integrating multiple structures into a single PCB.
Smart Images

Figure 2025515826000001_ABST
Abstract
Description
Detailed Description of the Invention
[0001] [Technical field] The present invention relates to a sanitary device using a motor mounted on a PCB (printed circuit board) for light irradiation, and more specifically, to an electric toothbrush that uses a motor mounted on a PCB for light irradiation and has a structure in which noise is reduced and vibration stability is improved by attaching a vibration motor to the PCB. [Background technology] In general, dental hygiene involves brushing your teeth and then using a mouthwash containing chemical antibacterial agents to remove the bacteria in your mouth that cause the formation of plaque and tartar.
[0002] There are many electric toothbrushes on the market as an effective way to brush your teeth. Also, because regular brushing alone is not enough to effectively remove bacteria, electric toothbrushes that emit light of specific wavelengths are now available.
[0003] However, generally, only chemical removal methods using mouthwashes and the like are used, and although light-emitting electric toothbrushes not only emit white light, but also many electric toothbrushes that emit blue or red LEDs have recently been released, they have limitations in that they do not effectively kill bacteria in the mouth and no specific method for suppressing bacteria has been shown to be effective.
[0004] In particular, existing electric toothbrushes are configured to have an antibacterial function by irradiating light with a vibration motor inside, but the vibration motor is disposed in a plastic housing and assembled while being physically separated from the board, and generally consists of three PCBs: a board on which a light source is formed, a board to which the vibration motor is connected, and a board to which a battery is connected. These existing electric toothbrushes have a three-piece PCB structure with three boards, which increases costs and manufacturing processes, and causes problems such as increased noise during use and poor vibration stability. Korean Patent Publication No. 10-0773210 has been published as a prior art document. Detailed Description of the Invention [Technical issues] The present invention has been proposed to solve the problems of the above-mentioned conventionally proposed methods, and has a main body forming the exterior of the housing of the handle and head, and a shape corresponding to the shape of the main body, and is arranged inside the main body, but a power button is formed in the handle area, and a light source unit including a plurality of light sources that irradiate light through a waveguide is formed in the PCB, and a vibration motor is arranged in the upper area of the handle of the main body and soldered to the PCB, and a vibration motor is positioned and fixed to the upper part of the light source formed in the head area of the PCB, and attached via a toothbrush bristle plate having toothbrush bristles formed by at least one waveguide, so that a PCB-attached vibration motor can be used. The object is to provide a light-irradiating sanitary device using a PCB-attached motor that reduces noise and improves usability by improving the noise reduction effect and vibration stability.
[0005] Another object of the present invention is to provide a light-irradiating sanitary device that uses a motor with a PCB, which can simplify the manufacturing process and reduce costs by configuring multiple or divided structures into an integrated structure within an existing PCB, thereby improving productivity. [Problem solving means] According to the features of the present invention, a light-irradiating sanitary device using a PCB-mounted motor to achieve the above object includes the following components: a main body forming an external housing of a handle portion and a head portion; a PCB (printed circuit board) configured in a shape corresponding to the shape of the main body and disposed within the main body, with a power button formed in the handle portion area and a light source portion including a plurality of light sources formed in the head portion area; a vibration motor disposed in an upper area of the handle portion of the main body and attached to the PCB by soldering; and a toothbrush plate with bristles formed from at least one light guide disposed and fixed on the light source portion formed in the head portion area of the PCB. Preferably, the PCB is configured as an integral structure that can be disposed within the main body in a shape corresponding to the shape of the main body. Preferably, the PCB can further include a battery connector disposed and formed within the handle portion of the main body. Preferably, the light source portion of the PCB includes a first light source that emits a short wavelength light and a second light source that emits a long wavelength light, and the plurality of light sources are configured in a set structure including at least one first light source that emits a short wavelength light and at least one second light source that emits a long wavelength light. More preferably, the light source portion is configured in a structure in which a plurality of light sources are repeatedly arranged. More preferably, the light source portion includes a first light source emitting a short wavelength light and a second light source emitting a long wavelength light, the short wavelength light emitted from the first light source being blue light and the long wavelength light emitted from the second light source being red light. More preferably, the light source portion is composed of the first light source and the second light source being LEDs (light emitting diodes) or laser diodes. More preferably, the toothbrush plate comprises bristles formed from at least one light guide, the bristles formed from the light guide being made of optical fibers. [Effects of the Invention] The light-emitting sanitary device using a PCB-mounted motor according to the present invention includes a body forming an external housing for a handle portion and a head portion, and a PCB (printed circuit board) configured in a shape corresponding to the shape of the body and disposed within the body. A power button is formed in the handle portion area of the PCB, and a light source portion having a plurality of light sources emitting light through a waveguide is included in the head portion area. A vibration motor is disposed in the upper area of the handle portion of the body and soldered to the PCB. A toothbrush plate is located and fixed above the light source portion formed in the head portion area of the PCB, and includes a brush formed from at least one waveguide. This configuration reduces noise using a PCB-mounted vibration motor, and improves user convenience by increasing noise reduction and vibration stability.
[0006] Furthermore, the light irradiation sanitary device using the PCB-mounted motor of the present invention can simplify the manufacturing process, reduce costs, and improve productivity by integrating the multiple or divided structures of existing PCBs into a single structure. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a functional block diagram showing the configuration of a light-irradiating sanitary device using a PCB-mounted motor according to an embodiment of the present invention.
[0007] [Figure 2] Figure 2 is a diagram showing the configuration of the main body of a light-irradiating sanitary device using a PCB-mounted motor according to an embodiment of the present invention, and is shown as a functional block diagram.
[0008] [Figure 3] Figure 3 is a diagram showing the configuration of a PCB of a light-irradiating sanitary device using a PCB-mounted motor according to an embodiment of the present invention, and is shown as a functional block diagram.
[0009] FIG. 4 is a schematic perspective view of a light-irradiating sanitary device using a PCB-mounted motor according to an embodiment of the present invention.
[0010] FIG. 5 is a diagram showing the relationship between the position of a light source part of a PCB and a toothbrush plate in a light irradiation sanitary device using a PCB-equipped motor according to one embodiment of the present invention.
[0011] FIG. 6 is a diagram showing a configuration in which a light source unit and a toothbrush plate of a light irradiating sanitary device using a motor with a PCB according to one embodiment of the present invention are combined.
[0012] FIG. 7 shows a plan view of a toothbrush plate in a light irradiating sanitary device using a motor with a PCB according to one embodiment of the present invention. [Mode for carrying out the invention] Hereinafter, a preferred embodiment will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. However, when describing the preferred embodiment of the present invention in detail, detailed description of specific features or configurations that may unnecessarily obscure the essence of the invention will be omitted. In addition, the same reference numerals are used throughout the drawings for parts having similar functions and operations.
[0013] Additionally, throughout this specification, when parts are referred to as being "connected" to one another, this includes not only direct connections, but also indirect connections through other intervening components. Furthermore, when a component is described as "including" it does not exclude other components, but rather means that additional components may be included unless otherwise specified.
[0014] FIG. 1 shows, in functional blocks, the configuration of a light-irradiating sanitary device using a motor with a PCB according to one embodiment of the present invention. FIG. 2 shows, in functional blocks, the configuration of a main body of a light-irradiating sanitary device using a motor with a PCB according to one embodiment of the present invention. FIG. 3 shows, in functional blocks, the PCB configuration of a light-irradiating sanitary device using a motor with a PCB according to one embodiment of the present invention. FIG. 4 is a schematic perspective view of a light-irradiating sanitary device using a motor with a PCB according to one embodiment of the present invention. As shown in FIGS. 1 to 4, a light-irradiating sanitary device (100) using a motor with a PCB according to one embodiment of the present invention may be composed of a main body (110), a PCB (120), a vibration motor (130), and a toothbrush plate (140).
[0015] The main body (110) is composed of a housing that forms the exterior of the handle (111), and a head (112). The handle (111) of the main body (110) is the part that the user grips, and has an exposed power button (121). A toothbrush plate (141) and a massage plate (142) made of a waveguide, and a light source (122) are arranged on the head (112) of the main body (110), as described below. Light emitted from the light source is irradiated onto the user's teeth, gums, etc. through the toothbrush plate (141).
[0016] The printed circuit board (120) is formed in a shape corresponding to the shape of the main body (110) and is disposed inside the main body (110). The printed circuit board (120) includes a power button (121) formed in the handle region and a light source section (122) consisting of multiple light sources that emit light via a waveguide to the head region. This printed circuit board configuration constitutes a printed circuit board designed to fit within the main body (110) and can be configured as a single piece (1 piece) to simplify the manufacturing process and potentially reduce costs compared to multiple or divided structures typically found in conventional printed circuit board designs.
[0017] Furthermore, the PCB (120) can be further configured to include a battery connector (123) that is formed and disposed within the handle portion (111) of the main body (110). Furthermore, the light source portion (122) of the PCB (120) can include a first light source (122a) that emits short-wavelength light and a second light source (122b) that emits long-wavelength light. The plurality of light sources can be configured as a set including at least one first light source (122a) that emits short-wavelength light and at least one second light source (122b) that emits long-wavelength light.
[0018] Furthermore, the light source portion (122) can be configured by arranging a plurality of light sources in a repeating pattern. This light source portion (122) can include a first light source (122a) that emits short-wavelength light and a second light source (122b) that emits long-wavelength light. The short-wavelength light emitted from the first light source (122a) is blue light, and the long-wavelength light emitted from the second light source (122b) is red light. Furthermore, in addition to red or blue, the light source portion (122) can be composed of ultraviolet light, infrared light, or light in other non-visible spectra, and may appear as yellow or green light.
[0019] Also, the light source portion (122) can be configured such that the first light source (122a) and the second light source (122b) are light-emitting diodes (LEDs) or laser diodes.
[0020] The vibration motor (130) is disposed in the upper region of the handle portion (111) of the main body (110) and is configured to be attached to the PCB (120) by soldering. By configuring the vibration motor (130) to be attached to the PCB (120), noise associated with vibration during the use of the electric toothbrush is reduced, and the stability of the vibration is improved. In other words, by integrating the vibration motor (130) into a fixed form attached to the PCB (120), compared with the conventional individual motor design, the noise is reduced and the stability of the vibration is improved, so the convenience is improved. The vibration motor (130) of the light irradiation hygiene device (100) can generate vibration to enhance the functionality of the electric toothbrush.
[0021] The toothbrush plate (140) is positioned and fixed on top of the light source section (122) formed in the head region of the PCB (120) and is designed to have at least one bristles (141) formed from a waveguide, in particular at least one bristles (141) formed from a waveguide that may be formed from an optical fiber.
[0022] Fig. 5 is a diagram showing the relationship between the position of the toothbrush plate and the light source unit of the PCB in a light-irradiating sanitary device using a motor with a PCB according to one embodiment of the present invention. Fig. 6 is a diagram showing a configuration in which a light source unit and a toothbrush plate are combined in a light-irradiating sanitary device using a motor with a PCB according to one embodiment of the present invention. Fig. 7 is a diagram showing the planar configuration of the toothbrush plate in a light-irradiating sanitary device using a motor with a PCB according to one embodiment of the present invention.
[0023] As shown in Figures 5 to 7, the bristles (141) of the toothbrush plate are provided with at least one waveguide for externally irradiating light from a light source. Here, a waveguide refers to a conduit that carries light emitted from a light source. The bristles (141) can transmit the light emitted from the light source to the teeth of a user, and the bristles (141) using a waveguide can be constructed using optical fibers.
[0024] Additionally, the massage plate (142) may be fabricated using a waveguide, where the massage plate (142) is used to massage the gums of a user and may transmit light emitted from a light source to massage the inside of the user's gums, cheeks, or tongue. The massage plate (142) may also be constructed using a bundle of optical fibers to efficiently transmit the light emitted from the light source.
[0025] Furthermore, because optical fibers cannot exceed a certain diameter in order to efficiently transmit light, the massage plate (142) can be constructed by forming a set of optical fiber bundles and inserting these bundles into a capsule in the massage plate (142).
[0026] In addition, the toothbrush plate (140) on which the brush bristles (141) and the massage plate (142) are formed can be configured to be removable from the head portion (112) of the main body (110) and can be replaced depending on the usage situation.
[0027] 7, the bristles (141) can be designed with at least one bristles (141d) arranged at each end along the length of the toothbrush plate (140) to effectively illuminate the molars. The bristles (141d) can be longer than the other bristles (141a, 141b, 141c, 141e) on the toothbrush plate (140). Furthermore, the bristles (141a, 141b, 141c, 141e) can be arranged in a rectangle according to the array pattern of the light source.
[0028] The massage plate (142) can be arranged to massage the gums around a virtual rectangle centered on the oval toothbrush plate (140). The light source unit (122) can emit blue light for oral disinfection and tooth whitening effects, and red light for anti-inflammatory effects and collagen formation. By arranging multiple light sources, the first light source (122a) and the second light source (122b) in the light source unit (122) alternately, the light intensity can be increased by constructive interference, improving the effectiveness of the light. [Industrial Applicability] As described above, a light-irradiating sanitary device using a motor with a PCB according to one embodiment of the present invention comprises a main body forming the exterior housing of the handle and head portions, a PCB arranged inside the main body corresponding to the shape of the main body, a power button formed in the handle portion area and having a plurality of light sources emitting light via waveguides in the head portion area, a vibration motor mounted on the upper area of the handle portion of the main body and attached to the PCB by soldering, and a toothbrush plate arranged and fixed to the top of the light source portion formed in the head portion area of the PCB and having bristles formed from at least one waveguide.
[0029] This configuration reduces the noise generated by the PCB-equipped vibration motor, improving user convenience through reduced noise and improved vibration stability. Furthermore, by integrating the multiple or divided structures of the existing PCB into a single structure, the manufacturing process is simplified, reducing costs and improving productivity.
[0030] The above description of the present invention is intended to allow various modifications and adaptations by those skilled in the art to which the present invention pertains, and the scope of the technical idea of the present invention should be determined by the following claims. [Brief description of the drawings]
[0031] [Figure 1] FIG. 1 is a diagram showing the configuration of a light-irradiating sanitary device using a PCB-mounted motor according to an embodiment of the present invention, shown as a functional block diagram. [Diagram 2] FIG. 2 is a functional block diagram showing the configuration of the main body of a light-irradiating sanitary device using a PCB-mounted motor according to an embodiment of the present invention. [Diagram 3] FIG. 2 is a diagram showing the configuration of a PCB for a light-irradiating sanitary device using a PCB-mounted motor according to an embodiment of the present invention, shown as a functional block diagram. [Figure 4] FIG. 1 shows a schematic perspective view of a light-irradiating sanitary device using a PCB-mounted motor according to an embodiment of the present invention. [Diagram 5] 1 is a diagram showing the relationship between the position of a light source part of a PCB and a toothbrush plate in a light irradiation sanitary device using a motor with a PCB according to one embodiment of the present invention. FIG. [Figure 6] FIG. 1 is a diagram showing a configuration in which a light source unit and a toothbrush plate of a light irradiation sanitary device using a motor with a PCB according to one embodiment of the present invention are combined. [Figure 7] 1 shows the planar configuration of a toothbrush plate in a light irradiation sanitary device using a motor with a PCB according to one embodiment of the present invention.
Claims
1. A light irradiation sanitary device (100) using a motor with a PCB (printed circuit board) comprises: a main body (110) forming an exterior of a handle portion (111) and a head portion (112); a light source portion (122) configured to have a shape corresponding to the shape of the main body (110), disposed inside the main body (110), having a power button (121) formed in the handle portion region, and including a plurality of light sources that emit light via waveguides formed in the head portion region; and a vibration motor (130) disposed in an upper region of the handle portion (111) of the main body (110) and attached to the PCB (120) by soldering. The light irradiation sanitary device (100) uses a motor with a PCB (printed circuit board) and is disposed and fixed to an upper portion of the light source portion (122) formed in the head portion region of the PCB (120), and includes bristles (141) formed from at least one waveguide, the toothbrush plate including bristles formed from at least one waveguide.
2. In claim 1, the PCB (120) of the light irradiation sanitary device using a PCB-equipped motor is characterized in that it further includes a battery connector (123) formed and arranged inside the handle portion (111) of the main body (110).
3. In claim 1, the PCB (120) of the light irradiation sanitary device using a PCB-equipped motor is characterized in that it further includes a battery connector (123) formed and arranged inside the handle portion (111) of the main body (110).
4. The light irradiation sanitary device using a motor with a PCB described in any one of claims 1 to 3 is characterized in that the light source section (122) of the PCB (120) comprises a first light source (122a) that emits short wavelength light and a second light source (122b) that emits long wavelength light, and the multiple light sources are configured as a set including at least one set of the first light source (122a) that emits short wavelength light and the second light source (122b) that emits long wavelength light.
5. The light irradiation sanitary device using a PCB-equipped motor according to claim 4 is characterized in that the light source unit (122) is configured by repeatedly arranging a plurality of light sources.
6. In claim 4, the light irradiation sanitary device using a PCB-equipped motor is characterized in that the light source unit (122) comprises a first light source (122a) that emits blue light, which is a short wavelength light, and a second light source (122b) that emits red light, which is a long wavelength light.
7. The light irradiation sanitary device using a PCB-equipped motor of claim 4 is characterized in that in the light source unit (122), the first light source (122a) and the second light source (122b) are composed of an LED (light-emitting diode) or a laser diode.
8. In claim 4, an oral hygiene device using a PCB-connected motor is characterized by a brush head assembly (140) including at least one brush (141) formed using a waveguide, the brush being formed from optical fiber.