CN211094908U - Double-head electric toothbrush - Google Patents

Abstract

A double-head electric toothbrush belongs to the field of electric toothbrushes, and relates to a personal oral cavity cleaning tool which is characterized in that two toothbrush heads carry out reciprocating type tooth brushing under the driving of a motor gear rack, the electric toothbrush on the current market mainly has vibration and rotation, the scheme is a double-head reciprocating type, when in use, the two toothbrush heads form a reciprocating rubbing working state, the technology of a rubbing electric brush device is improved, the rubbing electric brush device is a single power technology, the scheme of a practical product is not mature, therefore, the scheme is improved into the double-head electric toothbrush, a waterproof device is additionally arranged at the front end of a handle of the double-head electric toothbrush, the double-head electric toothbrush is sealed with a handle shell to prevent water from flowing into the interior of the handle cavity, a detection point is arranged on an eccentric gear, and the opening and closing of the motor are controlled by a light touch switch and a light control switch technology, and the manual switch is connected in parallel to work, so that the two brush heads are in a parallel state after the motor stops.

Description

Double-head electric toothbrush

Technical Field

The field of electric toothbrushes.

Background

The double-head electric toothbrush is formed by technical improvement of a (rubbing type electric brush device).

Disclosure of Invention

A double-headed electric toothbrush having two brush heads side by side similar to a single general brush head cut in half from the middle, a waterproof unit connected to the front end of a handle in which a motor is provided, a bent rack, a spur rack, a transition gear, an eccentric gear, a gear set connected to the output of the motor, bearings arranged around the two rack rods and fixed on the inner structure of the handle shell together with the motor gear set, the eccentric gear is provided with a eccentric shaft and a set point for light touch switch and infrared light detection, the set point is a light reflection object and a concave hole, the motor is connected to a manual power switch and an automatic detection switch in parallel (comprising a light touch switch and an optical module control switch), and the double-head electric toothbrush is powered by an internal rechargeable battery and an external power supply.

Drawings

FIG. 1 is an overall appearance shape of a double-headed electric toothbrush, wherein (1) two toothbrush heads (2) are water-proof devices (3) are handles,

FIG. 2 is a schematic view of the components of the movement part of the double-head electric toothbrush, wherein (5) a bent rack (6) is a straight rack (7), a transition gear (8) is a bearing (9) is an eccentric shaft (10) on an eccentric gear, and the motor output is obtained,

FIG. 3 is a schematic view of an eccentric gear, in which (11) is a set detection point,

figure 4 is a schematic view of a waterproofing device,

fig. 5 is a schematic view of the operating principle of the tact switch.

Detailed Description

Firstly, the method comprises the following steps: the double-head electric toothbrush is formed by improving the technology of a twisting type electric brush device, the working mode of the toothbrush is that two racks do mechanical motion under the drive of a motor to drive two toothbrush heads to brush teeth in a reciprocating mode in the oral cavity, the assembly mode is that two toothbrush head rods are connected with the front ends of the two racks, a waterproof device is sleeved on the two rack rods and fixed at the front end of a handle, further, (1) the front head of the waterproof device is tightly clamped at the position when the toothbrush head rods are buckled with the front ends of the racks by a male-female structure, (2) the toothbrush head rods are rotationally buckled with the front ends of the racks by a nut shape and tightly clamp the front head of the waterproof device, (3) the toothbrush head rods and the front ends of the racks are matched with the waterproof device and fixed by ultrasonic waves, a movable connecting port is arranged at one section of the rack rod in the middle of the waterproof device to facilitate the replacement of the toothbrush head and the waterproof device, and the rear end of the, when the toothbrush works, the waterproof device elastically moves along with the toothbrush rod to prevent water from flowing into the cavity of the handle, the waterproof device is made of high-elasticity silicone rubber material and has the integral waterproof function after being sealed with the handle shell,

II, secondly: the core part structure assembly (figure 2) is formed by that a transition gear is meshed between two racks, an eccentric shaft on the eccentric gear is arranged in a bayonet arranged at the tail end of a bent rack, the eccentric gear is driven by a motor gear set, the bent rack is pushed to reciprocate by the eccentric shaft on the eccentric gear so as to drive the transition gear and a straight rack, in order to ensure that the rotation of a handle internal component is reduced by friction force, a plurality of bearings are arranged around two rack rods, the bearings and the motor gear set are fixed on points arranged in the handle shell through a shaft, the motor gear set converts power into twisting operation of the two racks, the two racks are clamped and fixed by the bearings around and parallel to each other and keep smooth, the stroke of the racks is determined by the rotating circular diameter of an eccentric shaft on the eccentric gear, so that the toothbrush heads at the top ends of the two racks reciprocate in a certain stroke,

thirdly, the method comprises the following steps: the method for controlling the motor by connecting the manual power switch and the automatic detection switch in parallel, (figure 5) the tact switch is arranged below the corresponding detection point on the eccentric gear, and the working principle is as follows: when the manual switch is turned on, the motor drives the eccentric gear to rotate, the point A of the tact switch is pressed down to switch on the point B and the point C, namely, the tact switch and the manual switch are in a power-on state simultaneously, when the tact switch moves to the concave hole position of the detection point (11) shown in figure 3, the tact switch loses pressure, the point A bounces to switch off the point B and the point C, the manual switch is in the power-on state, the eccentric gear continues to rotate, when the manual switch is turned off (the tact switch is in the power-on state), the motor drives the eccentric gear to continue to rotate, when the detection concave hole moves to the point A, the point A bounces, the point B and the point C are switched off again, and the two switches are in,

the function of the infrared light detection module control circuit is the same as that of the infrared light detection module control circuit, when the manual power switch is turned on, the infrared light detection circuit starts to work, the switch circuit is switched on, the motor drives the eccentric gear to rotate, when the detection point is aligned with the detection module, the receiving circuit which reflects light to the detection module controls the switch circuit to be turned off, at the moment, the eccentric gear continues to rotate due to the fact that the manual switch is in an on state, when the manual switch is turned off (due to the fact that the light control switch is in an on state), the motor drives the eccentric gear to continue to rotate, when the detection point is transferred to be aligned with the infrared light module, the light is reflected to the receiving circuit to control the switch circuit to be turned off, at the moment, the two switches are simultaneously,

further, the double-head electric toothbrush works in a mode that two brush heads do reverse reciprocating motion simultaneously, in order to keep the two brush heads in parallel under a stop state, an automatic detection control switch and a manual switch are designed to be connected in parallel, so that a motor stops at a set stroke position, namely, the two switches are simultaneously opened and a single switch is in an on state, when the two switches are simultaneously turned off, the power supply of the motor is turned off, the infrared light detection module circuit is the prior art and has the same control function with a light touch switch, the methods are different from one another, so two methods are respectively adopted,

fourthly, the method comprises the following steps: the double-head electric toothbrush is characterized by comprising a power supply mode, a charging battery is arranged in the double-head electric toothbrush for supplying power, the charging mode is provided with a handle tail end provided with a charging interface and a contact type metal sheet contact point, when the electric toothbrush is placed on the charging seat, the metal sheet is automatically butted with the power supply contact point on the charging seat, a mechanical power structure is arranged in the double-head electric toothbrush, the space in the handle is small, the taken-down battery is small, the provided kinetic energy is less, if the size of the handle is increased, the hand holding feeling is uncomfortable, and the two schemes of supplying power by an external power supply are respectively adopted under the condition of improving the power and not increasing.

Further explanation of figure 1(1) the two brush heads are in the shape of a single common toothbrush head which is divided into two parts and the toothbrush heads have various shapes, and the scheme has been tested for many times to obtain that the shape of dividing the common single brush head into two parts is most suitable for the tooth brushing mode.

Claims (2)

1. The utility model provides a double-end electric toothbrush, its characterized in that has two toothbrush heads side by side, two toothbrush heads are connected to the handle front end and have watertight fittings, are provided with motor, a sinuous rack, a spur rack, an excessive gear, an eccentric gear and the gear train that is connected to motor output in the handle, the sinuous rack with be provided with the bearing around the spur rack, the bearing is fixed on handle casing inner structure with motor gear train in the lump, be provided with inclined to one side dabber and infrared ray light check point on the eccentric gear, the check point is the light reflection object, and it corresponds the place ahead and is provided with infrared ray optical module control switch circuit, the motor is connected to manual switch and infrared ray light detection control switch parallel connection, to sum up double-end electric toothbrush is by built-in rechargeable battery power supply and.

2. The double-ended electric toothbrush according to claim 1, wherein the eccentric gear is provided with a eccentric shaft and a concave hole point, a tact switch is provided below the concave hole point, and the motor is connected to a manual power switch and connected in parallel with the tact switch.

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