JPS6118892Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a water immersion prevention structure for an oral irrigator.

Conventionally, a right cylindrical bushing was attached to the outer periphery of the hose and this bushing was inserted directly into the hose insertion port, which had the disadvantage that the sealing force was weak and water easily entered.

The present invention was developed in view of the drawbacks of the conventional example described above, and its purpose is to improve the tightness of the hose insertion hole by providing an elastic piece in the shape of a latch around the outer periphery of the bush. An object of the present invention is to provide a water-intrusion prevention structure for an oral irrigator that can prevent water from entering between a hose and a hose insertion port.

Hereinafter, the present invention will be explained in detail with reference to the accompanying drawings. Reference numeral 1 denotes a cleaning device main body, in which a water pressure adjustment knob 7 is provided at the bottom, a water storage tank 2 is provided at the upper left, and a support portion for holding the grip portion 3 is provided at the concave wall portion 8 at the upper right. 4 and a protrusion 9 for winding a hose 6, and the grip portion 3 is connected to the washer main body 1 and the hose 6.

As shown in FIG. 2, a pump motor 10 and a pump 11 driven by the pump motor 10 are built in the lower part of the washer body 1, and the pump 11 is connected to a water storage tank 2 through hoses 12 and 6. and the grip portion 3, respectively. Pump motor 1
When 0 is rotated, pulleys 13 and 14 are rotated,
The rotational motion of the eccentric shaft 15 of the pulley 14 on the pump 11 side is converted into a reciprocating motion by the driver 16,
The piston 17 is driven by the driver 16, and the cleaning water in the water storage tank 2 is force-fed to the grip part 3.

The grip part 3 has a structure as shown in FIG. 3, has a built-in small motor 18, has a tip of a nozzle 5 protruding from its tip, and rotates an eccentric shaft 19 driven by the small motor 18. Movement is by swinging lever 20
This is converted into an oscillating motion, thereby causing the nozzle 5 to perform an oscillating motion. Further, the nozzle 5 is hollow and connected to a hose 6 via an intermediate pipe 21.

At the tip of the nozzle 5, there is a nozzle attachment 2.
2 or a toothbrush attachment 23 can be attached, and when the nozzle attachment 22 is attached, the changeover switch 24 is pushed in and switched to the pump 11 side as shown in Fig. 3, and when the main switch 25 is turned on, the pump is switched on. 11 is activated, the cleaning water in the water storage tank 2 is forcefully discharged from the tip of the nozzle attachment 22, and can be used as a water pick. Furthermore, when the toothbrush attachment 23 is attached, the changeover switch 24 is protruded and switched to the small motor 18 side, and when the main switch 25 is turned on, the toothbrush attachment is oscillated back and forth so that teeth can be brushed.

What is shown in FIGS. 5 and 6 is a cylindrical bush 26 made of a rubber material, and a wrap-shaped elastic piece 27 is integrally formed on the outer periphery. One sealing protrusion 29 is protruded from the inner periphery of the bush 26, three sealing protrusions 30 are protruded from the outer periphery of the elastic piece 27, and three sealing protrusions 30 are protruded from the lower part of the elastic piece 27. A stepped portion 31 is formed to prevent slippage.
This bushing 26 is then fitted onto the outer periphery of the hose 6 in close contact with the outer periphery of the bushing 26, and a protective spring 32 is passed through the outer periphery of the bushing 26. On the other hand, the grip part 3 is provided with a cylindrical hose insertion port 28, and the bush 26 has its large diameter side facing the inside of the grip part 3 and its small diameter side facing the outside of the grip part 3. The elastic piece 27 is pressed into contact with the hose insertion port 28 by being press-fitted into the inner periphery. Therefore, the bush 26 has a double cylinder structure with the elastic piece 27 in close contact with it.
Since it is thicker and harder than other parts, the sealing effect is improved and water intrusion from the hose insertion port 28 is prevented. Furthermore, since the elastic piece 27 is press-fitted into the hose insertion port 28 from the small diameter side, assembly becomes easy.

The hose 6 has a double-tube structure, and a lead wire connecting the pump motor 10 and the changeover switch 24 is passed through the inside of the double-tube.

When the grip part 3 is not used, the rear part of the grip part 3 is inserted into the support part 4 and supported vertically, and the hose 6 is wrapped around the protrusion 9, as shown in FIGS. 1 and 2. Can be stored. Moreover, when the inside of the water storage tank 2 is emptied, the stand 28 on which the nozzle attachment 22 and the toothbrush attachment 23 are erected can be hung from the lid 29 of the water storage tank 2 for storage.

Since the present invention is constructed as described above, in short, by being press-fitted into the elastic piece of the hose insertion opening, the elastic piece is brought into close contact with the inner wall surface of the hose insertion opening due to the elastic force that tries to expand, and the hose is inserted through the elastic piece. It has the advantage of being able to prevent water from entering into the grip from the opening, and also being able to accommodate slightly different sizes of the hose insertion openings since the elastic piece has a twill shape.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the oral irrigator according to the present invention, Fig. 2 is a partially cutaway front view of the same, Fig. 3 is a sectional view of the grip portion of the above, and Fig. 4 is a partially enlarged sectional view of the same. , FIG. 5 is a perspective view of the bushing, and FIG. 6 is a sectional view of the same. 3...Grip portion, 6...Hose, 26...Button, 27...Elastic piece, 28...Hose insertion port.

Claims (1)

[Claims for Utility Model Registration] (1) In an oral irrigator in which a nozzle is provided at one end of a grip and a hose is connected to the other end, cleaning water is supplied to the nozzle through the hose and the grip using a pump. A bushing is fitted onto the outer periphery of the hose so as to be in close contact with the outer periphery of the hose, an elastic piece having elasticity is provided on the outer periphery of the bushing, and this elastic piece is pressed into contact with the inner periphery of a cylindrical hose insertion opening provided in the grip. A water-prevention structure for an oral irrigator consisting of a hose connected to the grip. (2) A water-intrusion prevention structure for an oral irrigator according to claim 1, which comprises an annular sealing protrusion formed on the outer periphery of the elastic piece and the inner periphery of the bush. (3) Water immersion in the oral irrigator according to claim 1, which is a utility model registered claim, in which the elastic piece is attached to the hose insertion port with the large diameter side facing inside the grip and the small diameter side facing outside the grip. Prevention structure.