Electric toothbrush structure with partition recognition and quick release functions

Abstract

An electric toothbrush structure with partition recognition and quick release functions comprises a handle, a main support, a motor and a small six-axis inertial sensor are arranged in the handle, the motor is fixed to the main support, a mirror cover is mounted at the mounting end of the handle, waterproof silica gel is arranged between the mirror cover and the handle in a sleeving mode, and a connecting disc is arranged on the end face of the mounting end. A lens cover lock hole and a main support lock hole are formed in the connecting disc, a second lock hole is formed in the annular face of the waterproof silica gel, a first lock hole is formed in the lens cover, the first lock hole, the second lock hole and the lens cover lock hole are connected through screws, and a pair of screw columns is arranged at the front end of the motor groove. And the main bracket lock hole is connected with the screw column through a screw, so that the main bracket is connected with the handle. Through the small six-axis inertial sensor, the electric toothbrush can accurately detect the attitude angle and the position of the electric toothbrush to recognize the current tooth brushing area, the main support and the handle are assembled in an inserted and matched mode, the handle and the mirror cover are locked and fixed through screws, and maintenance and disassembly are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of electric toothbrushes, in particular to an electric toothbrush structure with partition identification and quick release. Background Art

[0002] The electric toothbrushes currently on the market include a handle and a main bracket. The internal structure of the electric toothbrush is installed inside the main bracket. The assembly connection between the internal structure of the handle and the main bracket, and the assembly connection between the main bracket and the handle are all assembled by snap-fitting. Moreover, in order to ensure the stability of the assembly of the handle and the main bracket, and the main bracket and the internal structure, the snap-fitting often adopts a hook-type snap-fitting assembly. Although the assembly is simple in structure and the range of controllable dimensional error is large due to the snap-fitting method, the disadvantage is that it is not easy to disassemble. In the process of injection molding of the handle, the handle mold core used needs to add an internal retraction and core pulling mechanism, and the structure is relatively complicated. Moreover, if there are some problems with the internal components, it will be difficult to disassemble the machine. After maintenance and disassembly, the shell and accessories are also easily damaged, which makes maintenance inconvenient. Summary of the Invention

[0003] The utility model addresses the problems of existing electric toothbrushes being difficult to disassemble and repair after assembly, and having a complex handle mold structure. In terms of design, the handle, the main bracket, and the waterproof sealing ring are precisely aligned and assembled with positioning columns and interference fit, and then assembled into one piece by locking self-tapping screws to achieve fixation and waterproofing. This breaks the traditional snap-on assembly method, and while disassembling and repairing the toothbrush, the various components of the electric toothbrush can be basically undamaged, which greatly reduces the material loss ratio caused by rework and repair of the toothbrush, and provides an electric toothbrush structure with partition identification and quick disassembly.

[0004] The technical solution provided by the present invention is: an electric toothbrush structure with partition identification and quick release, including a handle, an internal structure installed inside the handle, a back cover provided at the bottom of the handle, the internal structure including a main bracket, a motor bracket, and a motor, the main bracket is provided with a motor slot and a battery slot, the motor is fixed in the motor slot, the motor bracket is buckled on the motor slot to form a fixed connection with the motor, a mounting end extends from one end of the handle, a mirror cover is installed on the mounting end, a waterproof silicone is provided between the mirror cover and the handle, and the motor shaft of the motor extends from the motor slot through the waterproof silicone inside. Externally, the end face of the mounting end is provided with a connecting plate, and the connecting plate is provided with a symmetrical mirror cover lock hole and a pair of main bracket lock holes. The waterproof silicone comprises an annular surface fitted with the connecting plate, and the annular surface is provided with a second lock hole corresponding to the mirror cover lock hole. The mirror cover is provided with a first lock hole corresponding to the mirror cover lock hole. The first lock hole, the second lock hole and the mirror cover lock hole are connected by screws so that the mirror cover is sealed and connected to the handle. The front end of the motor slot is provided with a pair of screw columns corresponding to the main bracket lock holes. The main bracket lock holes and the screw columns are connected by screws so that the main bracket and the handle are connected.

[0005] Furthermore, the mounting end is provided with a first rib on its outer side wall, and the mirror cover is provided with a first slot corresponding to the first rib inside. By plugging the first rib into the first slot, the mirror cover is positioned and sleeved on the mounting end of the handle.

[0006] Furthermore, a pair of second ribs are provided on the main bracket, and a second slot corresponding to the second rib is provided inside the handle. By plugging the second rib into the second slot, the main bracket is positioned and sleeved in the handle.

[0007] Furthermore, a pair of plug-in posts for fixing the motor is provided at the rear end of the motor slot, and the motor is plugged in and fixed in the motor slot through the plug-in posts.

[0008] Furthermore, the front end of the motor bracket is provided with a pair of plug-in parts, the motor slot is provided with a plug-in column corresponding to the plug-in part, the front end of the motor slot is provided with a pair of second clips, and the rear end of the motor slot is provided with a hook. The motor bracket is positioned on the plug-in column through the plug-in part, and the motor bracket is connected to the motor slot by the second clip and the hook, and the motor bracket is fixed to the motor.

[0009] Furthermore, the rear end of the motor bracket is provided with a fixing groove, which is sheathed with a shock-absorbing rubber member. The shock-absorbing rubber member is arranged in a semicircular ring, and the outer annular surface of the shock-absorbing rubber member has a concave-convex structure. After the internal structure is fixed to the handle by plugging, the shock-absorbing rubber member on the motor bracket elastically fits against the inner wall of the handle. Vibration generated by the motor during operation is transmitted through the motor bracket to the shock-absorbing rubber member, where it is effectively absorbed by the high damping properties of the shock-absorbing rubber member. The alternating concave-convex structure of the shock-absorbing rubber member prevents vibration from the motor bracket from being transmitted to the handle.

[0010] Furthermore, a first ring column protruding from the bottom surface of the annular surface is provided at the bottom center of the annular surface, a second ring column is provided inside the first ring column, the second ring column protrudes from the upper surface of the annular surface, the second ring column is hollow inside, and an annular groove is formed between the first and second ring columns. The bottom of the annular surface is provided with a positioning protrusion corresponding to the lock hole of the main bracket, and the waterproof silicone is positioned and inserted into the lock hole of the main bracket through the positioning protrusion so that the annular surface fits on the connecting disk. During assembly, the waterproof silicone is externally sleeved on the motor shaft and internally sleeved on the connecting disk of the handle. The provision of the annular groove provides an elastic extrusion space when the second ring column of the waterproof silicone fits on the motor shaft, thereby ensuring that the annular surface can better fit on the connecting disk and preventing the waterproof silicone from deforming during installation due to external pressure, which makes the annular surface unable to fit with the plane of the connecting disk.

[0011] Furthermore, the annular surface is provided with a plurality of concentrically arranged sealing protrusions. After the lens cover and the handle are screwed together, the sealing protrusions are pressed against the inner surface of the lens cover. The sealing protrusions are deformed by the extrusion to better ensure the sealing of the lens cover.

[0012] Furthermore, an annular waterproof groove is provided on the mounting end, and an annular waterproof ring is provided in the waterproof groove.

[0013] Furthermore, the mounting end is provided with a sensor slot, in which a small 6-axis inertial sensor is installed. Several positioning bosses are provided at the edge of the sensor slot to position and assemble the small 6-axis inertial sensor. The small 6-axis inertial sensor is electrically connected to the PCBA mainboard of the internal structure. By providing a small 6-axis inertial sensor, the electric toothbrush can accurately detect the posture angle and its own position to determine the current brushing area, and determine the brushing time in the current area by the operating time of the motor. Therefore, the electric toothbrush has a partition recognition function.

[0014] In the present invention, a plurality of pairs of first buckles arranged opposite to each other are provided at the edge of the battery slot of the main bracket, and the batteries in the battery slot are fixedly buckled together by the first buckles.

[0015] According to the utility model, after the motor is fixed by the plug-in column, it is fixed by the motor bracket. The motor bracket is positioned by the plug-in cooperation of the plug-in column in the plug-in part. The motor bracket is fixed by the front and back clamps of the second buckle and the hook on the motor slot. The assembly of the internal structure is simple and convenient. The internal structure is plugged into the second slot of the handle through the second rib to realize the plug-in assembly cooperation between the internal structure and the means. After cooperation, the main bracket lock hole of the connecting plate of the handle and the screw column of the main bracket are used to tighten and fix it.

[0016] The utility model utilizes waterproof silicone to fit over the motor shaft of the internal structure, and the annular surface of the waterproof silicone fits over the surface of the connecting plate of the handle. After the first rib on the mounting end of the handle is inserted into the first slot inside the mirror cover for positioning, it is fastened and fixed by screws between the first locking hole on the mirror cover, the second locking hole on the waterproof silicone and the mirror cover locking hole on the connecting plate.

[0017] The utility model is convenient for maintenance and disassembly because the internal structure and the handle, as well as the handle and the mirror cover, are assembled by plugging and then fixed by screws.

[0018] In this utility model, a small-axis inertial sensor is provided on the sensor slot of the internal structure. The small-axis inertial sensor determines the current brushing area by accurately detecting the posture angle and its own position and through algorithm analysis. The brushing area is divided into four areas: upper left, upper right, lower left, and lower right according to the spatial angle fed back by the sensor, thereby realizing the partition recognition process during the use of the electric toothbrush. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of an electric toothbrush.

[0020] Figure 2 This is a schematic diagram of the three-dimensional decomposition structure of an electric toothbrush.

[0021] Figure 3 This is a schematic diagram of the internal cross-sectional structure of an electric toothbrush.

[0022] Figure 4 This is a schematic diagram of the local structure of the mounting end of the handle.

[0023] Figure 5 This is one of the schematic diagrams of the three-dimensional structure of the mirror cover.

[0024] Figure 6 This is the second schematic diagram of the three-dimensional structure of the mirror cover.

[0025] Figure 7 It is a three-dimensional structural diagram of the internal structure.

[0026] Figure 8 This is a schematic diagram of the three-dimensional decomposition of the internal structure.

[0027] Figure 9 This is one of the schematic diagrams of the three-dimensional structure of waterproof silicone.

[0028] Figure 10 This is the second schematic diagram of the three-dimensional structure of waterproof silicone.

[0029] Figure 11 Schematic diagram of the internal cross-sectional structure of waterproof silicone.

[0030] Figure 12 This is a schematic diagram of the PCBA mainboard inside the electric toothbrush.

[0031] Among them: 1-handle, 11-mounting end, 12-waterproof groove, 13-connecting plate, 14-main bracket lock hole, 15-mirror cover lock hole, 16-first rib, 17-sensor slot, 18-positioning boss, 19-second slot, 2-mirror cover, 21-first lock hole, 22-first slot, 3-internal structure, 31-main bracket, 311-motor slot, 312-battery slot, 313-first buckle, 314-hook, 315-plug column, 316-second buckle, 317-plug column, 318-screw column, 319-second rib, 32-motor bracket, 321 -Connecting part, 322-Positioning part, 323-Fixing groove, 33-Motor, 331-Motor shaft, 34-Shockproof rubber, 35-Small 6-axis inertial sensor, 4-Back cover, 5-Waterproof silicone, 51-Annular surface, 52-First ring column, 53-Second ring column, 54-Annular groove, 55-Second lock hole, 56-Sealing protrusion, 57-Positioning protrusion, 6-Waterproof ring, 7-PCBA mainboard; 71-Micro control unit, 72-Motor drive control unit, 73-Sensor control unit, 74-Lithium battery protection unit, 75-Touch switch, 76-Charging management unit. DETAILED DESCRIPTION

[0032] The following is a brief description of the embodiments of the present invention with reference to the accompanying drawings.

[0033] An electric toothbrush structure with partition identification and quick release, refer to 1- Figure 3 , including a handle 1, an internal structure 3 is installed inside the handle 1, a back cover 4 is provided at the bottom of the handle 1, a mirror cover 2 is sleeved on the front end of the handle 1, and the mirror cover 2 is transparent so that the display information inside the rear can be transparently displayed through the mirror cover 2.

[0034] Reference Figure 7 、 Figure 8, the internal structure 3 includes a main bracket 31, a motor bracket 32, and a motor 33. The main bracket 31 is provided with a motor slot 311 and a battery slot 312. A plurality of pairs of first clips 313 are provided at the edge of the battery slot 312. The batteries in the battery slot 312 are fixed together by the first clips 313. A pair of plug-in posts 315 for fixing the motor 33 are provided at the rear end of the motor slot 311. The motor 33 is plugged and fixed in the motor slot 311 through the plug-in posts 315. A pair of second clips 316 are provided at the front end of the motor slot 311. The rear end of the motor slot 311 is provided with a There is a hook 314, and a plug post 317 is provided on the motor slot 311. Correspondingly, a pair of plug-in parts 321 are provided at the front end of the motor bracket 32. The motor bracket 32 is positioned by being fitted on the plug post 317 through the plug-in parts 321. The motor bracket 32 is connected to the motor slot 311 through the second clip 316 and the hook 314, so that the motor bracket 32 is fitted and fixed to the motor 33. A positioning part 322 is provided at the front end of the motor bracket 32. The positioning part 322 positions the center of the motor shaft 331 extending from the motor 33. A pair of screw columns 318 are provided at the front end of the motor slot 311.

[0035] Reference Figure 4 A mounting end 11 extends from one end of the handle 1, and the mounting end 11 is used to sleeve and install the mirror cover 2. A waterproof silicone 5 is sleeved between the mirror cover 2 and the handle 1. After the waterproof silicone 5, the handle 1 and the internal structure 3 are installed, the motor shaft 331 of the motor 33 of the internal structure 3 extends from the motor slot 311 through the inside of the waterproof silicone 5 to the outside.

[0036] Among them, the end surface of the mounting end 11 is provided with a connecting plate 13, and the connecting plate 13 is provided with a symmetrical mirror cover lock hole 15 and a pair of main bracket lock holes 14. The main bracket lock hole 14 is connected to the screw column 318 by screws, thereby realizing the connection between the main bracket 31 and the handle 1. Figure 5 、 Figure 6The mirror cover 2 is provided with a first lock hole 21 corresponding to the mirror cover lock hole 15. The first lock hole 21 and the mirror cover lock hole 15 are connected by screws, so that the mirror cover 2 is sealed and connected to the handle 1. The mounting end 11 is provided with a sensor slot 17. A small 6-axis inertial sensor 35 is installed in the sensor slot 17. A plurality of positioning bosses 18 are provided at the edge of the sensor slot 17. The positioning bosses 18 position and assemble the small 6-axis inertial sensor 35, and the small 6-axis inertial sensor 35 is electrically connected to the PCBA mainboard of the internal structure 3. Preferably, the small 6-axis inertial sensor 35 is a Murata Manufacturing Co., Ltd. has developed an inertial sensor model SCH16T-K01. By setting up a small 6-axis inertial sensor 35, the electric toothbrush can accurately detect the posture angle and its own position to determine the current brushing area, and determine the brushing time in the current area by the working time of the motor 33. Specifically, the electric toothbrush determines the current brushing area through algorithm analysis, and divides the brushing area into four areas: upper left, upper right, lower left, and lower right based on the spatial angle feedback from the small 6-axis inertial sensor 35, thereby realizing the partition recognition process of the electric toothbrush during use.

[0037] Reference Figure 8 、 Figure 9 The PCBA mainboard 7 is configured to include a micro control unit 71, a motor drive control unit 72, a sensor control unit 73, a lithium battery protection unit 74, a touch switch 75 and a charging management unit 76. The charging management unit 76 is electrically connected to the lithium battery protection unit 74, the lithium battery protection unit 74 is electrically connected to the sensor control unit 73, the sensor control unit 73 is electrically connected to the micro control unit 71, the micro control unit 71 is electrically connected to the motor drive control unit 72, and the motor drive control unit 72 is electrically connected to the touch switch 75.

[0038] Reference Figure 8 、 Figure 9 、 Figure 10The waterproof silicone 5 includes an annular surface 51 that fits the connecting plate 13. A second lock hole 55 corresponding to the lock hole 15 of the mirror cover is opened on the annular surface 51. A first ring column 52 protruding from the bottom surface thereof is provided at the bottom center of the annular surface 51. A second ring column 53 is provided inside the first ring column 52. The second ring column 53 protrudes from the upper surface of the annular surface 51. The interior of the second ring column 53 is hollow. An annular groove 54 is formed between the first ring column 52 and the second ring column 53. The annular surface 51 is provided with multiple concentrically arranged sealing protrusions 56. The bottom of the annular surface 51 is provided with a positioning protrusion 57 corresponding to the lock hole 14 of the main bracket. When sealing, the waterproof silicone 5 is positioned and plugged in through the positioning protrusion 57 The annular surface 51 is fitted on the connecting disk 13 in the lock hole 14 of the main bracket, and the waterproof silicone 5 is externally sleeved on the motor shaft 331 and internally sleeved on the connecting disk 13 of the handle 1. The setting of the annular groove 54 allows the second ring column 53 of the waterproof silicone 5 to have an elastic extrusion space when fitting the motor shaft 331, thereby ensuring that the annular surface 51 can better fit on the connecting disk 13, and avoiding the deformation of the waterproof silicone 5 when the waterproof silicone 5 is squeezed and installed by external force, so that the annular surface 51 cannot fit with the plane of the connecting disk 13. Since the sealing protrusion 56 is squeezed and fitted on the inner surface of the mirror cover 2, the sealing protrusion 56 can further improve the sealing effect after being deformed by extrusion.

[0039] In this embodiment, a pair of second ribs 319 are provided on the main bracket 31, and a second slot 19 corresponding to the second rib 319 is provided inside the handle 1. The second rib 319 and the second slot 19 are plugged together to achieve the positioning and sleeve connection of the main bracket 31 within the handle 1. After positioning, the main bracket 31 and the handle 1 are conveniently screwed together. A first rib 16 is provided on the outer side wall of the mounting end 11 of the handle 1, and a first slot 22 corresponding to the first rib 16 is provided inside the mirror cover 2. The first rib 16 and the first slot 22 are plugged together to achieve the positioning and sleeve connection of the mirror cover 2 on the mounting end 11 of the handle 1, thereby conveniently screwing together the handle 1 and the mirror cover 2. Therefore, the above-mentioned assembly method is simple to assemble and can achieve non-destructive disassembly, which is convenient for disassembly and inspection during subsequent maintenance.

[0040] In this embodiment, a ring-shaped waterproof groove 12 is provided on the mounting end 11 of the handle 1, and a ring-shaped waterproof ring 6 is provided in the waterproof groove 12. The waterproof ring 6 is sealed to the handle 1, thereby ensuring a good waterproof effect at the connection between the handle 1 and the mirror cover 2.

[0041] In this embodiment, a fixing groove 323 is provided at the rear end of the motor bracket 32, and a shock-proof rubber 34 is provided inside the fixing groove 323. The shock-proof rubber 34 is arranged in a semicircular ring, and the outer annular surface 51 of the shock-proof rubber 34 has a concave and convex alternating structure. The shock-proof rubber 34 is simple and convenient to install. After the internal structure 3 is fixed to the handle 1 by plugging, the shock-proof rubber 34 on the motor bracket 32 elastically fits against the inner wall of the handle 1. After the vibration generated by the motor 33 during operation is transmitted to the shock-proof rubber 34 through the motor bracket 32, the high damping characteristics of the shock-proof rubber 34 are used to effectively absorb the vibration, and the concave and convex shock-proof structure of the shock-proof rubber 34 prevents the vibration on the motor bracket 32 from being transmitted to the handle 1.

[0042] The above embodiments merely represent implementation methods of the present invention. Although the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art may make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements are all within the scope of protection of the present invention.

Claims

1. An electric toothbrush structure with partition identification and quick release, comprising a handle, an internal structure mounted within the handle, a rear cover disposed at the bottom of the handle, the internal structure comprising a main bracket, a motor bracket, and a motor, the main bracket being provided with a motor slot and a battery slot, the motor being secured within the motor slot, the motor bracket being clipped onto the motor slot to securely engage the motor, and characterized in that: A mounting end extends from one end of the handle, and a mirror cover is mounted on the mounting end. Waterproof silicone is sleeved between the mirror cover and the handle. The motor, whose motor shaft extends from the motor slot through the inside of the waterproof silicone to the outside, has a connecting disk on the end face of the mounting end, and a symmetrical mirror cover lock hole and a pair of main bracket lock holes are provided on the connecting disk. The waterproof silicone comprises an annular surface that fits the connecting disk, and a second lock hole corresponding to the mirror cover lock hole is provided on the annular surface. The mirror cover is provided with a first lock hole corresponding to the mirror cover lock hole. The first lock hole, the second lock hole and the mirror cover lock hole are connected by screws so that the mirror cover is sealed and connected to the handle. A pair of screw columns corresponding to the main bracket lock holes are provided at the front end of the motor slot. The main bracket lock hole and the screw columns are connected by screws so that the main bracket and the handle are connected.

2. The electric toothbrush structure with partition identification and quick release according to claim 1, characterized in that: The mounting end has a first rib on its outer side wall, and the mirror cover has a first slot corresponding to the first rib inside. By plugging the first rib into the first slot, the mirror cover is positioned and sleeved on the mounting end of the handle.

3. The electric toothbrush structure with partition identification and quick release according to claim 1, characterized in that: The main bracket is provided with a pair of second ribs, and the handle is provided with a second slot corresponding to the second rib. By plugging the second rib into the second slot, the main bracket is positioned and sleeved in the handle.

4. The electric toothbrush structure with partition identification and quick release according to claim 1, characterized in that: A pair of plug-in posts for fixing the motor are provided at the rear end of the motor slot, and the motor is plugged in and fixed in the motor slot through the plug-in posts.

5. The electric toothbrush structure with partition identification and quick release according to claim 1, characterized in that: A pair of plug-in parts are provided at the front end of the motor bracket, and a plug-in column corresponding to the plug-in part is provided on the motor slot. A pair of second clips are provided at the front end of the motor slot, and a hook is provided at the rear end of the motor slot. The motor bracket is positioned on the plug-in column by the plug-in part, and the motor bracket is connected to the motor slot by the second clip and the hook, and the motor bracket is fixed to the motor.

6. The electric toothbrush structure with partition identification and quick release according to claim 1, characterized in that: A fixing groove is provided at the rear end of the motor bracket. A shockproof rubber is sleeved in the fixing groove. The shockproof rubber is arranged in a semicircular shape. The outer annular surface of the shockproof rubber has a concave-convex alternating structure.

7. The electric toothbrush structure with partition identification and quick release according to claim 1, characterized in that: A first ring column protruding from the bottom surface of the annular surface is provided at the bottom center of the annular surface, a second ring column is provided inside the first ring column, the second ring column protrudes from the upper surface of the annular surface, the interior of the second ring column is hollow, and an annular groove is formed between the first ring column and the second ring column, and a positioning protrusion corresponding to the lock hole of the main bracket is provided at the bottom of the annular surface, and the waterproof silicone is positioned and inserted into the lock hole of the main bracket through the positioning protrusion so that the annular surface fits onto the connecting disk.

8. The electric toothbrush structure with partition identification and quick release according to claim 1, characterized in that: The annular surface is provided with a plurality of concentrically arranged sealing protrusions.

9. The electric toothbrush structure with partition identification and quick release according to claim 1, characterized in that: An annular waterproof groove is provided on the mounting end, and an annular waterproof ring is provided in the waterproof groove.

10. The electric toothbrush structure with partition identification and quick release according to claim 1, characterized in that: The mounting end is provided with a sensor slot, in which a small 6-axis inertial sensor is installed. The small 6-axis inertial sensor is electrically connected to the PCBA mainboard of the internal structure.

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