Electric toothbrush capable of working smoothly and stably

Abstract

The utility model discloses an electric toothbrush that works smoothly and stably, including toothbrush handle and toothbrush head, toothbrush head includes brush head shell, planting hair mounting seat and push rod channel, planting hair subassembly is rotatingly connected in planting hair mounting seat, the toothbrush handle is provided with drive mechanism, drive mechanism includes drive rod, and the drive rod is connected with the brush head shell. The driving rod penetrates through the end face of the upper end of the toothbrush handle and the push rod channel and then is in driving connection with the bristle planting assembly, the driving rod comprises a fixed push rod connected with the driving mechanism and a movable push rod connected with the bristle planting assembly, and the fixed push rod and the movable push rod are in clearance connection through a clamping mechanism. The shaft claw is arranged by deviating from the axis of the movable push rod and is matched with a limiting structure of the rotating limiting rod and the rotating limiting groove, so that the bristle planting assembly can rotate in a specified safe area, the problems of blockage and irregular rotation of the bristle planting assembly during working are effectively solved, and the use experience feeling of a user is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of electric toothbrush technology, specifically to an electric toothbrush that operates smoothly and stably. Background Technology

[0002] There are two types of electric toothbrushes: one type uses a motor to drive the brush head to swing back and forth to brush teeth, and the other type uses a motor to drive the bristle assembly on the brush head to rotate to brush teeth.

[0003] Existing electric toothbrushes that use a drive motor to rotate the bristle assembly have an unreasonable structural design, which may cause them to jam or the bristle assembly to rotate erratically during use, seriously affecting the user's brushing experience. Utility Model Content

[0004] The purpose of this utility model is to provide an electric toothbrush that operates smoothly and stably. The shaft claw is set off from the axis of the movable push rod, and in conjunction with the limiting structure of the rotation limit rod and the rotation limit groove, the bristle implantation component can rotate within a designated safe area, effectively solving the problems of jamming and irregular rotation of the bristle implantation component during operation, and solving the problems in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an electric toothbrush that operates smoothly and stably, comprising a toothbrush handle and a toothbrush head detachably connected to the upper end of the toothbrush handle. The toothbrush head includes a brush head shell, a bristle mounting base disposed at one end of the brush head shell, and a push rod channel extending axially along the brush head shell. A bristle assembly is rotatably connected within the bristle mounting base. A drive mechanism is disposed within the toothbrush handle, the drive mechanism including a drive rod. The drive rod passes through the upper end face of the toothbrush handle and the push rod channel and is drivenly connected to the bristle assembly. The bristle assembly faces the bristle mounting base. A hair-planting pivot is provided on one side, and a bearing is provided inside the hair-planting mounting base. The hair-planting assembly is rotatably connected to the hair-planting mounting base through the cooperation of the hair-planting pivot and the bearing. A push rod pivot is provided on the hair-planting assembly at a position off the central axis. A pawl is provided on the end of the drive rod facing the hair-planting assembly. The pawl is offset from the axis of the drive rod. The drive rod is rotatably connected to the push rod pivot through the cooperation of the pawl and the push rod pivot. A rotation limit rod is fixed on the hair-planting mounting base. A rotation limit groove is provided on the hair-planting assembly. The rotation limit rod is inserted into the rotation limit groove and is slidably connected to the rotation limit groove.

[0006] Preferably, the drive rod includes a fixed push rod connected to the drive mechanism and a movable push rod connected to the hair-planting assembly, and the fixed push rod and the movable push rod are gap-connected by a snap-fit ​​mechanism.

[0007] Preferably, the locking mechanism includes a swing locking seat and a swing locking connector. The swing locking seat is a tubular body with through holes symmetrically arranged on both sides of the tubular body. The swing locking connector is a flat arrowhead body. When the swing locking connector is connected to the swing locking seat, the protrusions on both sides of the flat arrowhead body are respectively locked into the through holes. The movable push rod can swing relative to the fixed push rod with the line connecting the protrusions on both sides of the flat arrowhead body as the axis.

[0008] Preferably, a return spring is circumferentially sleeved on the drive rod, with the upper end of the return spring being limited and connected to the inner wall of the push rod channel, and the lower end being limited and connected to the drive rod.

[0009] Preferably, the drive mechanism includes a drive motor, a drive gear connected to the output shaft of the drive motor, an eccentric gear plate meshing with the drive gear, a rod seat slidably connected to the eccentric shaft of the eccentric gear plate, and a drive rod fixedly connected to the rod seat.

[0010] Preferably, the toothbrush handle includes a handle housing and a port cover located at the bottom of the handle housing. An electrical bracket is disposed inside the handle housing, and a drive mechanism, a battery, and a circuit board assembly are mounted on the electrical bracket. The drive mechanism and the battery are electrically connected to the circuit board assembly. The circuit board assembly is electrically connected to a control button and a power interface. The control button is disposed in a pre-set through hole in the handle housing, and the power interface is disposed in a pre-set through hole in the port cover. A light-emitting LED is encapsulated on the circuit board assembly, and a light guide is sandwiched between the circuit board assembly and the handle housing. A portion of the light guide is embedded in a pre-set light-emitting through hole in the handle housing, and the light emitted by the LED is emitted outward from the light-emitting through hole through the light guide.

[0011] Preferably, the drive rod and the toothbrush handle housing are connected in a water-tight manner through a waterproof kit.

[0012] Preferably, the lower end of the toothbrush head is fitted with a brush head connector, and the upper end of the toothbrush handle is provided with a handle connector. The toothbrush head is detachably connected to the toothbrush handle through the snap-fit ​​between the brush head connector and the handle connector.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] In this invention, the pawl is set off from the axis of the movable push rod, and in conjunction with the limiting structure of the rotation limiting rod and the rotation limiting groove, the hair-planting assembly can rotate within a designated safe area, effectively solving the problem of jamming and irregular rotation of the hair-planting assembly during operation, and effectively improving the user experience. Attached Figure Description

[0015] Figure 1 Explosion of the structure of this utility model Figure 1 ;

[0016] Figure 2 Explosion of the structure of this utility model Figure 2 ;

[0017] Figure 3 This is a perspective view of the appearance of this utility model;

[0018] Figure 4 This is a schematic diagram of the AA cross-section orientation of this utility model;

[0019] Figure 5 This is a cross-sectional view of the present invention.

[0020] In the diagram: 1. Toothbrush head; 11. Brush head housing; 12. Bristle mounting base; 121. Bearing; 122. Rotation limit rod; 13. Bristle assembly; 131. Bristle shaft; 132. Push rod shaft; 133. Rotation limit groove; 14. Brush head connector; 2. Toothbrush handle; 21. Handle housing; 211. Handle connector; 22. Port cover; 23. Electrical bracket; 24. Light guide; 25. Circuit board assembly; 251. Control button; 252. Power interface; 253. LED; 26. Drive mechanism; 261. Drive motor; 262. Drive gear; 263. Eccentric gear plate; 264. Rod seat; 265. Drive rod; 2651. Fixed push rod; 2652. Movable push rod; 2653. Swing connector; 2654. Swing connector base; 2655. Shaft claw; 27. Battery; 28. Waterproof kit. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-5An electric toothbrush that operates smoothly and stably includes a toothbrush handle 2 and a toothbrush head 1 detachably connected to the upper end of the toothbrush handle 2. The toothbrush head 1 includes a brush head shell 11, a bristle mounting base 12 disposed at one end of the brush head shell 11, and a push rod channel extending axially along the brush head shell 11. A bristle assembly 13 is rotatably connected within the bristle mounting base 12. A drive mechanism 26 is disposed within the toothbrush handle 2. The drive mechanism 26 includes a drive rod 265, which passes through the upper end face of the toothbrush handle 2 and the push rod channel and is drivenly connected to the bristle assembly 13. The drive rod 265 includes a fixed push rod 2651 connected to the drive mechanism 26 and a push rod 2651 connected to the bristle assembly 13. The movable push rod 2652 is connected to the fixed push rod 2651 via a locking mechanism to achieve a gap connection. The locking mechanism includes a swing locking seat 2654 and a swing locking connector 2653. The swing locking seat 2654 is a tubular body with through holes symmetrically arranged on both sides of the tubular body. The swing locking connector 2653 is a flat arrowhead. When the swing locking connector 2653 is connected to the swing locking seat 2654, the protrusions on both sides of the flat arrowhead are respectively locked into the through holes. The movable push rod 2652 can swing relative to the fixed push rod 2651 with the line connecting the protrusions on both sides of the flat arrowhead as the axis.

[0023] The tufting assembly 13 has a tufting shaft 131 facing the tufting mounting base 12. A bearing 121 is installed inside the tufting mounting base 12. The tufting assembly 13 is rotatably connected to the tufting mounting base 12 via the cooperation of the tufting shaft 131 and the bearing 121. A push rod shaft 132 is located off-center from the central axis of the tufting assembly 13. A pawl 2655 is provided at one end of the movable push rod 2652 facing the tufting assembly 13. The pawl 2655 is offset from the axis of the movable push rod 2652. The movable push rod 2652 is rotatably connected to the push rod shaft 132 via the cooperation of the pawl 2655. A rotation limit rod 122 is fixed on the tufting mounting base 12. A rotation limit groove 133 is provided on the tufting assembly 13. The rotation limit rod 122 is inserted into the rotation limit groove 133 and slidably connected to it. A return spring 266 is circumferentially sleeved on the drive rod 265. The upper end of the return spring 266 is limitedly connected to the inner wall of the push rod channel, and the lower end is limitedly connected to the drive rod 265. The drive mechanism 26 includes a drive motor 261, a drive gear 262 connected to the output shaft of the drive motor, an eccentric gear disk 263 meshing with the drive gear 262, a rod seat 264 slidably connected to the eccentric shaft of the eccentric gear disk 263, and a drive rod 265 fixedly connected to the rod seat 264. When the drive motor 261 is working, it drives the drive gear 262 to rotate, thereby driving the eccentric gear disk 263 to rotate. The rod seat 264 moves up and down and back under the drive of the eccentric gear disk 263, thereby driving the drive rod 265 to move down and back. At this time, the tufting assembly 13 reciprocates within the limited range of the rotation limiting groove 133 and the rotation limiting rod 122.

[0024] The toothbrush handle 2 includes a handle housing 21 and a port cover 22 covering the bottom of the handle housing 21. An electrical support 23 is disposed inside the handle housing 21. A drive mechanism 26, a battery 27, and a circuit board assembly 25 are mounted on the electrical support 23. The drive mechanism 26 and the battery 27 are electrically connected to the circuit board assembly 25. The circuit board assembly 25 is electrically connected to a control button 251 and a power interface 252. The control button 251 is located in a pre-set through hole in the handle housing 21 and is used to control the operating mode of the drive motor 261. The power interface... The port 252 is located in a pre-set through hole in the port cover 22. When the power interface 252 is connected to an external power supply using a charging cable, it can charge the battery 27. The circuit board assembly 25 is encapsulated with light-emitting LED beads 253. A light guide 24 is sandwiched between the circuit board assembly 25 and the handle housing 21. Part of the light guide 24 is embedded in a pre-set light-emitting through hole in the handle housing 21. The light emitted by the light-emitting LED beads 253 is emitted outward from the light-emitting through hole through the light guide 24. The light-emitting LED beads 253 use different light-emitting modes to show the user the real-time working status and working mode of the electric toothbrush.

[0025] The drive rod 265 and the toothbrush handle housing are connected in a water-tight manner through a waterproof kit 28. The waterproof kit 28 includes a silicone sleeve and a fastening spring ring. One end of the silicone sleeve is clamped between the electrical bracket 23 and the handle housing 21, and the other end is fastened to the drive rod 265 around its circumference through the fastening spring ring, thereby achieving a water-tight effect and preventing water from the outside of the toothbrush handle 2 from seeping into the toothbrush handle 2 and wetting the electrical components inside the handle housing 21.

[0026] The lower end of the toothbrush head 1 is fitted with a brush head connector 14, and the upper end of the toothbrush handle 2 is provided with a handle connector 211. The brush head connector 14 is fixedly connected to the toothbrush head 1. A concave hole is provided on the inner wall of the brush head connector 14, and a convex key is provided on the outer wall of the handle connector 211 corresponding to the concave hole. When the toothbrush head 1 is connected to the toothbrush handle 2, the concave hole and the convex key are snapped together. The toothbrush head 1 is detachably connected to the toothbrush handle 2 through the snap-fit ​​between the brush head connector 14 and the handle connector 211.

[0027] In summary, this utility model, with the claw 2655 offset from the axis of the movable push rod 2652 and in conjunction with the limiting structure of the rotation limiting rod 122 and the rotation limiting groove 133, enables the hair-planting assembly 13 to perform rotational operations within a designated safe area, effectively solving the problem of jamming and irregular rotation of the hair-planting assembly 13 during operation, and effectively improving the user experience.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electric toothbrush that operates smoothly and stably, comprising a toothbrush handle (2) and a toothbrush head (1) detachably connected to the upper end of the toothbrush handle (2), wherein the toothbrush head (1) comprises a brush head shell (11), a bristle mounting base (12) disposed at one end of the brush head shell (11), and a push rod channel extending axially along the brush head shell (11), wherein a bristle mounting assembly (13) is rotatably connected within the bristle mounting base (12), and a drive mechanism (26) is disposed within the toothbrush handle (2), wherein the drive mechanism (26) comprises a drive rod (265), the drive rod (265) passing through the upper end face of the toothbrush handle (2) and the push rod channel and being drivenly connected to the bristle mounting assembly (13), characterized in that: The tufting assembly (13) has a tufting shaft (131) facing the tufting mounting base (12). The tufting mounting base (12) has a bearing (121) inside. The tufting assembly (13) is rotatably connected to the tufting mounting base (12) through the cooperation of the tufting shaft (131) and the bearing (121). A push rod shaft (132) is provided on the tufting assembly (13) at a position off the central axis. The drive rod (265) has a pawl at one end facing the tufting assembly (13). (2655), the claw (2655) is offset from the axis of the drive rod (265), the drive rod (265) is rotatably connected to the push rod shaft (132) through the claw (2655), the hair-planting mounting base (12) is fixedly provided with a rotation limit rod (122), the hair-planting assembly (13) is provided with a rotation limit groove (133), the rotation limit rod (122) is inserted into the rotation limit groove (133) and is slidably connected with the rotation limit groove (133).

2. The electric toothbrush that operates smoothly and stably according to claim 1, characterized in that: The drive rod (265) includes a fixed push rod (2651) connected to the drive mechanism (26) and a movable push rod (2652) connected to the hair-planting assembly. The fixed push rod (2651) and the movable push rod (2652) are connected by a snap-fit ​​mechanism to achieve a gap connection.

3. The electric toothbrush that operates smoothly and stably according to claim 2, characterized in that: The locking mechanism includes a swing locking seat (2654) and a swing locking connector (2653). The swing locking seat (2654) is a tubular body with through holes symmetrically arranged on both sides of the tubular body. The swing locking connector (2653) is a flat arrowhead. When the swing locking connector (2653) is connected to the swing locking seat (2654), the protrusions on both sides of the flat arrowhead are respectively locked into the through holes. The movable push rod (2652) can swing relative to the fixed push rod (2651) with the line connecting the protrusions on both sides of the flat arrowhead as the axis.

4. The electric toothbrush that operates smoothly and stably according to claim 1, characterized in that: The drive rod (265) is circumferentially fitted with a return spring (266). The upper end of the return spring (266) is limited to the inner wall of the push rod channel, and the lower end is limited to the drive rod (265).

5. The electric toothbrush that operates smoothly and stably according to claim 1, characterized in that: The drive mechanism (26) includes a drive motor (261), a drive gear (262) connected to the output shaft of the drive motor, an eccentric gear disk (263) meshing with the drive gear (262), a rod seat (264) slidably connected to the eccentric shaft of the eccentric gear disk (263), and a drive rod (265) fixedly connected to the rod seat (264).

6. The electric toothbrush that operates smoothly and stably according to claim 1, characterized in that: The toothbrush handle (2) includes a handle housing (21) and a port cover (22) covering the bottom of the handle housing (21). An electrical bracket (23) is disposed inside the handle housing (21). A drive mechanism (26), a battery (27), and a circuit board assembly (25) are mounted on the electrical bracket (23). The drive mechanism (26) and the battery (27) are electrically connected to the circuit board assembly (25). The circuit board assembly (25) is electrically connected to a control button (251) and a power interface (252). The control button (251) is set in a pre-set through hole in the handle shell (21), the power interface (252) is set in a pre-set through hole in the port cover (22), the circuit board assembly (25) is encapsulated with light-emitting beads (253), a light guide (24) is sandwiched between the circuit board assembly (25) and the handle shell (21), a part of the light guide (24) is embedded in a pre-set light-emitting through hole in the handle shell (21), and the light emitted by the light-emitting beads (253) is emitted outward from the light-emitting through hole through the light guide (24).

7. The electric toothbrush that operates smoothly and stably according to claim 1, characterized in that: The drive rod (265) and the toothbrush handle housing are connected in a water-tight manner by a waterproof kit (28).

8. The electric toothbrush that operates smoothly and stably according to claim 1, characterized in that: The lower end of the toothbrush head (1) is fitted with a brush head connector (14), and the upper end of the toothbrush handle (2) is provided with a handle connector (211). The toothbrush head (1) is detachably connected to the toothbrush handle (2) through the snap-fit ​​between the brush head connector (14) and the handle connector (211).

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