CN86100587A

CN86100587A - Electric toothbrush

Info

Publication number: CN86100587A
Application number: CN 86100587
Authority: CN
Inventors: 童国栋
Original assignee: Individual
Current assignee: Individual
Priority date: 1986-05-22
Filing date: 1986-05-22
Publication date: 1987-12-02

Abstract

The invention provides the life appliance that the electronic rotation mode of a kind of usefulness is brushed teeth.The characteristics of this apparatus are: are used as power with micromotor, and dry cell power supply, after simple and easy gear-box slowed down, toothbrush was done rotatablely moving of two weeks of per second.When brushing teeth, operate a toggle switch, the control toothbrush clockwise, reverse or stop, reaching purpose, thereby correct method for brushing teeth habitually along dirt under the interdental brush, meet the health of brushing teeth.

Description

Electric toothbrush

The present invention relates to a kind of life appliance of brushing teeth by the rotation of motor drives bristle.

The current toothbrushes structure is to wear a few row brush hairs on a brush holder; Habitually method for brushing teeth is that toothbrush moves around along the parallel direction of gum, makes bristle and tooth expose the surface friction of protrusion.So easy the enamel of tooth

Matter grinds off, and make tooth be afraid of cold, be afraid of to scald, be afraid of acid long afterwards, and the rubbish that is embedded in the teeth space still exists, and still might ferment, damage by worms, and just looks like to whet a knife not have mill the same on blade.For this reason, hygiene department promotes the scientific method of brushing teeth along teeth space repeatedly.But people feel very awkward when brushing teeth along teeth space with existing toothbrush, so be reluctant for a long time to adopt, the children that are in the dental growth critical stage also can not learn.

In order to address this problem, basic way is the structure of reform toothbrush.The objective of the invention is to make bristle to brush the food and the dirt that be embedded in down in the teeth space, thereby eliminate the yellow thick hard scale and the generation of minimizing odontopathy along the teeth space motion.

Realize that content of the present invention is such: dry cell falls by one and powers to miniature magnetic DC motor along stopping toggle switch, and motor drives a brush rotation after gear reduction.Brush stretch into behind the oral cavity with tooth side by side, so the bristle of moulding on the face of cylinder of brush moves along teeth space.The rotation direction of permanent magnet direct current motor only depends on the sense of current of armature winding, fall along guard's valve can converting power source polarity, thereby change the sense of current that flows through armature winding, realize the reversible operation of motor, so when cleaning row's tooth with water, bristle rotates from top to bottom along teeth space, and when cleaning down row's tooth with water, bristle rotates from the bottom up along teeth space.Through observing, the about per second of frequency that the existing toothbrush of people's usefulness is brushed teeth 2 times, promptly move around 4 times, each run is in 40 millimeters, and then the movement velocity of toothbrush is 160 millimeters of per seconds, the brush of electric toothbrush comprises that the diameter of bristle is 20 millimeters, be that girth is 63 millimeters, the stroke that has then revolved 160 millimeters needs 2.7 to change, and considers that the rated speed of motor has an excursion, change so the rotating speed of brush is got per second 2～3, meet the custom speed that people brush teeth.Children's tooth is at growth phase, and sensory nerve sensitivity in the oral cavity, so the rotating speed of brush is suitable slow, gets per second 1～2 and changes.The method of slowing down is, except that gear graduation, and resistance that resistance is very little of series connection in armature circuit again.If the retarding method of this apparatus mainly adopts potentiometer infinitely variable speeds of armature circuit series connection, will have a strong impact on the torque of brush so, and is weak and feeble when brushing teeth, even motor is difficult to start, so the present invention mainly still adopts the gear reduction method.This apparatus is overall plastic structure, because of contacting with the oral cavity, so select for use nontoxic polyethylene to make material.Fastening method of the present invention all adopts inlays combination.

The present invention is because of being overall plastic structure, thus with low cost, again because all parts all are designed to mosaic texture, without securing member, so assemble very convenient.The present invention because with electronic as power, and adopt gear reduction, thus when brushing teeth firm neck effectively, simply cool and refreshing air, again because can arbitrarily change the direction of bristle rotation, the satisfactory hand of answering so brush gets up.Because the present invention has fundamentally changed the direction of motion of toothbrush, promptly move along teeth space, therefore can naturally and understandably correct the custom of laterally brushing teeth for a long time, thereby meet the requirement of hygiene department about the health of brushing teeth.

Concrete structure of the present invention is as follows:

Fig. 1 is the longitudinal sectional drawing of the electric toothbrush that proposes of the present invention and analyses and observe.

Fig. 2 is the electrical schematic diagram of the electric toothbrush that proposes of the present invention.

Describe concrete structure and the operation principle of electric toothbrush in detail below in conjunction with accompanying drawing.

This apparatus comprises a brush (1), moulded bristle (2) on the face of cylinder of brush (1), bristle has 72 strains, 3 millimeters at strain and strain interval, intersect uniform, every strain is formed by fiber doublings such as the nylon yarn of 8 0.25 mm dias or Polyamide Yarns, and the doubling position has the fiber of same material to block as lateral pin, in order to avoid depilation. When bristle (2) uses curling bending, replaceable new brush (1). Brush (1) is contained on the brush holder (3), 7.5 ° of two chamfers of brush (1), and the porch of brush holder (3) is 7.5 ° of chamferings also, are convenient to brush (1) assembly dismantle. Brush (1) links to each other with inserted mode with brush axle (4), the other end of brush axle (4) is the gear of 15 teeth, this gear forms reducing gear with gear (10) and gear (12), total rotating ratio is 40: 1, cogged modulus M gets 1, pressure angle α gets 20 °, and material is polyamide-66. Gear (10) is three identical gears, every gear is moulded by the pinion of the gear wheel of 15 teeth and 6 teeth and is integrated, gear (10) is contained on the axle (11), axle (11) is the flat head iron rivet of three piece of 1.4 mm dia, axle (11) is fixed on the lug of axle bed (13) protrusion, and the length of three lugs just in time makes the gear wheel of one of them gear of gear (10) mesh the pinion of another gear. Gear (12) links to each other with stationary fit with the shaft of motor (14), and the number of teeth of gear (12) is 6 teeth, and motor (14) is 1.5 volts of miniature magnetic DC motors, and motor (14) is determined its fixing means again according to selected model. If this apparatus is used by children, the resistance (15) of then in the armature circuit of motor (14), also will connecting, the concrete resistance of resistance (15) is decided according to the internal resistance of the armature winding of selected motor. Two lead-out wires (copper sheet) of motor (14) are flexibly clamped by wiring clamp (20), and wiring clamp (20) is by 0.3 millimeter Phosphorus bronze sheet is made, and the wiring clamp is welded with lead on (20), and lead is the high strength enamel covered wire of 0.5 mm dia. Lead again with switch on static contact (8) weld mutually, contact (8) is the oval head copper rivet of 6 1.6 mm dias, is fixed on the contact base (9), contact base (9) is the laminate of 1.5 millimeters thick. Contact base (9) and slide block (7) all embed in the housing (16), and by front shell cover (17) gear jail, and the switch on the housing (16) is other has moulded ()/(), ()/() and OFF printed words or direction number. Break-make situation between 6 contacts (8) is determined by tactile bridge (6), touches bridge (6) by slide block (7) shift position, and slide block (7) and top tactile bridge (6) thereof are located by the recessed shelves between the contact (8). Touching bridge (6) is the elasticity phosphorus bronze sheet of two 0.3 millimeters thick, and determining of the length of elasticity phosphorus bronze sheet should make between tactile bridge (6) and the contact (8) to have good electrically contacting property, sliding and polarization just. Be inserted in brush and cover (5), switch is just pinned safely, and to prevent misoperation, brush cover (5) plays again the effect of protection brush (1) and brush holder (3), with the usefulness of convenient storage and journey. Lead on the contact (8) is connected with dry cell (22) again, and the positive pole of dry cell (22) withstands on the contact copper sheet (19), and negative pole is pushed down by elasticity phosphorus bronze sheet (23). Cushion a plastic foam (21) on the dry cell (22), prevent that dry cell (22) warp-wise from sliding, dry cell (22) and plastic foam (21) are covered by rear shell cover (18). Brush holder (3) is clamped by front shell cover (17) and housing (16) concavo-convexly, and the front end of front shell cover (17) and housing (16) all inserts in the brush holder (3) fastening, shown in the B-B of Fig. 1 analyses and observe, the other end of front shell cover (17) and housing (16) then by take collude fastening, shown in the C-C of Fig. 1 analyses and observe. As will breaking, only need open rear shell cover (18) after, push away taking on the front shell cover (17) with bottle opener or any spillikin and collude, just can take apart. The front end of rear shell cover (18) inserts in the front shell cover (17), analyse and observe institute such as C-C and look, the other end of rear shell cover (18) then with housing (16) by take collude fastening. 0.5 millimeter of the prolongation that the taking of rear shell cover (18) colluded and tail piece (24) distance, and all do gradient at 45 °, shown in D-D analyses and observe. When changing battery, as long as click tail piece (24), rear shell cover (18) colludes namely with taking of housing (16) and breaks away from, and rear shell cover (18) is backed down a bit of distance by tail piece (24) earlier, is then flicked by the reaction force of plastic foam (21). One 1 millimeter the short pin that mould the bottom of rear shell cover (18) become with two 1 millimeter the short pin that mould the bottom of housing (16) 120 ° uniform, this is vertically placed with prodigiosin. The vertical placement than horizontal positioned of this apparatus stablized, and the Area comparison that occupies on the furniture is little, can be used as again upholstery. All closely inlay between brush holder (3), front shell cover (17), rear shell cover (18) and the housing (16), particularly the mosaic site at the edge of front shell cover (17) and housing (16) scribbles one deck grease, and water enters brush body when preventing from brushing teeth In. Brush axle (4) and brush holder (3) movingly, and assembling the time scribbles lubricating grease, considers the tension force of water, so water can not enter in the brush body by the inner chamber of brush holder (3) yet again.

When brushing teeth, take off brush cover (5), brush holder (3) is stretched into soak in the clear water, make bristle (2) contain water. Extrude one section toothpaste and be coated on the bristle (2), push back several times at tooth as using existing toothbrush to brush teeth, the toothpaste that makes into piece spreads out. Then open switch, i.e. mobile slide block (7) makes brush (1) rotation, then according to each one traditionally lower inside other places successively order clean tooth with water. Operation toggle switch (7) when the row's of cleaning with water tooth, makes bristle (2) rotate from top to bottom along teeth space; When cleaning lower row's tooth with water, bristle (2) is rotated from the bottom up along teeth space; When cleaning the mate of tooth with water, bristle (2) is from inside outwards rotated along teeth space, and promote back and forth. Will brush holder (3) after having brushed immerse in the clear water and wash, dry water stainly, put brush cover (5), the vertical placement.

Claims

1, one by motor drags, bristle rotates the apparatus of brushing teeth, the switch that feature of the present invention is slide block [7], touch bridge [6], contact [8] and contact base [9] are formed changes the polarity of the power supply that dry cell [22] provides, thereby the brush [1] that makes miniature cocurrent electromotor [14] drive after gear [12], gear [10] and brush axle [4] slow down mould bristle [2] is done reversible rotatablely moving.

2, according to the apparatus of brushing teeth of claim 1 regulation, it is characterized in that after gear train slows down the rotating speed of brush (1) is that per second 2～3 changes, behind an armature circuit resistance of series connection (15), the rotating speed of brush (1) is that per second 1～2 changes.

3, according to the apparatus of brushing teeth of claim 1 or 2 regulations, that the bristle (2) that it is characterized in that a strain strain intersects on the face of cylinder of cylindrical brush heads (1) is uniform, mould and be one.

4,, it is characterized in that 7.5 ° of two chamfers of brush (1), also 7.5 ° of chamferings in porch that brush (1) embeds brush holder (3) according to the apparatus of brushing teeth of claim 1,2 or 3 regulations.

5, the apparatus of stipulating according to claim 1 of brushing teeth, it is characterized in that slide block (7) and contact base (9) all embed housing (16) back respectively by front shell cover (17) retaining jail, touch bridge (6) and flexibly have good electrical contact, sliding and polarization with contact (8).

6,, it is characterized in that 6 contacts (8) contact between copper sheet (19), (23) to realize that motor (14) reversible operation is that the destination is electrically connected with enamel covered wire with 2 the wiring clamps (20) and the positive and negative of dry cell (22) of motor (14) lead-out wire according to the apparatus of brushing teeth of claim 1 or 5 regulations.

7, according to the apparatus of brushing teeth of claim 6 regulation, it is characterized in that the lead (copper sheet) of drawing of motor (14) is flexibly clamped by wiring clamp (20).

8, according to the apparatus of brushing teeth of claim 4 regulation, it is characterized in that brush holder (3) clamped by front shell cover (17) and housing (16) concavo-convexly, and that the front end of front shell cover (17) and housing (16) inserts in the brush holder (3) is fastening, the other end then by take collude fastening.

9, the apparatus of brushing teeth of regulation according to Claim 8, the front end that it is characterized in that rear shell cover (18) inserts in the front shell cover (17) fastening, the other end and housing (16) by take collude fastening.

10,, it is characterized in that prolongation that taking of rear shell cover (18) colluded and tail piece (24) apart from 0.5 millimeter, and all do gradient at 45 according to the apparatus of brushing teeth of claim 9 regulation.

11, according to the apparatus of brushing teeth of claim 1 or 9 regulations, it is characterized in that cushioning a plastic foam (21) between rear shell cover (18) and the dry cell (22).

12, according to the apparatus of brushing teeth of claim 9 regulation, the short pin that it is characterized in that the bottom of rear shell cover (18) moulds become with two short pin that mould the bottom of housing (16) 120 ° uniform.