JPS592482B2 - Water pressure driven toothbrush device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a toothbrush that is driven by a pulsating water stream, and a pulsating water outlet is provided in the bristle part of the toothbrush, and the toothbrush is operated to vibrate while jetting pulsating water from the outlet. , regarding a hydraulically driven toothbrush device having a switching valve for switching between toothbrush independent operation in which the toothbrush vibrates without ejecting pulsating water, in order to make the swing angle of the toothbrush constant during the toothbrush independent operation and water jet operation. , a constant pressure mechanism is provided in the piston pump section that generates pulsating water.

In the above-mentioned water pressure driven toothbrush device, a water pressure driven toothbrush has been developed which is capable of water jet operation and independent toothbrush operation.

This toothbrush is constructed as shown in FIG.

1 in the figure is a handle main body, which has a cylinder chamber 2 inside, has a pulsating water supply pipe 3 connected to one end, and has a toothbrush 4 rotatably fitted to the other end.

A piston 5 is provided in the cylinder chamber 2, and the piston 5 has a protrusion 6 on the outside, and the protrusion 6 is inserted into a helical groove 8 of a helical guide member 7 provided on the inner wall of the cylinder chamber 2. Therefore, the piston 5 is capable of converting reciprocating motion into rotational motion.

A hollow support shaft 9 is coupled to the piston 5, which is provided so as to penetrate through the center and is formed hollow so as to serve as a water passage.Both ends of this hollow support shaft 90 are connected to bearing members 10°1
1 to be rotatably and axially movable, the base end opens at the pressure receiving side of the piston 5 at °C, the distal end is connected to the water inlet 12 of the toothbrush 4, and Mechanically coupled.

A V-lip 13 is provided at the pressure-receiving end of the piston 5 to make the pressure-receiving effective, and a return spring 14 is provided at the opposite end.

The toothbrush 4 has a spout 16 at the bristles 15.

Further, a water passage hole 17 is formed in the bearing member 10 on the piston pressure receiving side that holds the hollow support shaft 9.

A valve 18 is provided to switch the toothbrush 4 between independent operation and water flow operation.

This valve 18 is held by a holding member 19 so as to correspond to the inflow side opening end of the hollow support shaft 9, and is provided so as to be freely movable in the axial direction.

A control valve 21 is provided on the side of the valve 18 and can be switched to two positions, above and to the side of the valve 18, by rotating the operating lever 20 by 9000 degrees.

Note that 22, 23, and 24 in the figure are seal members.

This toothbrush body operates as follows.

That is, when the control piece 21 is in the illustrated position and the movement of the valve 18 is regulated at ℃°C, when pulsating water is sent from the supply pipe 3, the valve 18 tries to move due to the pulsating pressure. However, since its movement is restricted, the position of the valve 18 remains unchanged.

On the other hand, the piston 6 that receives the pulsating pressure is pushed up and rotates while being guided by the spiral guide member 7. That is, the toothbrush 4 also swings by a certain rotation angle via the hollow support shaft 9, and then when the pulsating pressure disappears, the spring 14 As a result, the piston 5 returns to its downward movement, and the toothbrush 4 also rotates in the opposite direction.

Therefore, the toothbrush 4 is swung according to the pulsation.

During this operation, the inflow side opening of the hollow support shaft 9 is opened by the regulation of the valve 18, and a part of the pulsating water passes through the hollow support shaft 9 and is ejected from the spout 16 of the toothbrush 4.

In other words, water jet operation is performed.

Next, when the operating lever 20 is rotated 90 degrees, the tip of the control piece 21 located above the valve 18 is located on the side of the valve 18, and the tip of the control piece 21 located above the valve 18 is located on the side of the valve 18
Free the axial movement of 8.

Therefore, when pulsating water is supplied, the valve 18 is pushed up and closes the inflow side opening of the hollow support shaft 9.

Although the piston 5 moves with pulsating pressure in the same manner as described above, pulsating water is not ejected from the spout 16.

In other words, the toothbrush is operated independently.

By the way, as mentioned above, the pressures applied to the pressure receiving surface of the piston 5 are different in the water jet operation and the toothbrush independent operation.

That is, during the water jetting operation, a portion of the pulsating water is jetted out, so that the pressure applied to the pressure receiving surface of the piston 5 is reduced.

Therefore, the reciprocating motion of the piston 5, that is, the rotational deflection angle becomes smaller than when the toothbrush is operated alone.

In such a device that uses pulsating pressure to perform water jet operation and toothbrush independent operation, the toothbrush has two different rotational deflection angles, which is undesirable from the point of view of use.

In order to solve such problems, the present invention changes the pulsating pressure in a piston pump section that generates pulsating water according to the pressure change applied to the piston of the toothbrush section,
The aim is to keep the rotational deflection angle of the toothbrush constant regardless of changes in operating mode.

FIG. 1 shows a main part of an embodiment of the present invention, which will be explained below based on the drawings.

The drawing shows a piston pump part that generates pulsating water, and 2
5 is a cylinder 26, a piston 27, and a suction side check valve 28.
It is a piston pump having a suction port 29 and a discharge port 30.The piston 27 is a diaphragm 31.
is fixed to the end surface, and is caused to reciprocate by a motor (not shown).

The suction port 29 corresponds to the water supply port 33 of the water storage container 32, and is configured to be supplied with water for cleaning.

Further, a pulsating water supply pipe 3 is connected to the discharge port 30,
Pulsating water is supplied to the aforementioned toothbrush body.

A manual pressure adjustment section 34 and an automatic pressure adjustment section 35 are provided on the side of the cylinder 26.

The means pressure adjusting section 34 includes a hole 36 formed on one side of the cylinder 26, a bypass path 37 that returns to the suction side from the hole 35, and a manual valve body 38 for controlling the hole 36. The pulsating pressure is manually adjusted by controlling the degree of opening of the valve.

Further, the automatic pressure adjustment section 35 presses a hole 39 formed on one side of the cylinder 26, a bypass path 40 extending from the hole 39 to the suction side, a valve 41, and the valve 41 against the hole 39 with a constant pressure. It consists of a spring 42 and a screw 43 for adjusting the set pressure of the spring 42.

Note that 44, 45, and 46 in the figure are seal members.

The water-pressure-driven toothbrush device of the present invention is constructed as described above, and when there is a change in pulsating pressure on the piston 5 by switching between the two operations in the toothbrush section shown in FIG. However, the pressure inside the cylinder 26 of the piston pump section also changes.

Therefore, based on the pulsating pressure during water jet operation in the toothbrush section, if the temperature and pressure are high when the toothbrush is operated alone, the automatic pressure adjustment section 35 in the piston pump section 25 automatically adjusts a portion of the pressure water. In order to adjust the pulsating pressure of the piston pump section 25 to reduce the pulsating pressure of the piston pump section 25, the rotational deflection angle of the toothbrush when the toothbrush is operated alone is almost the same as the rotational deflection angle of the toothbrush during water jet operation. .

As described above, according to the present invention, since the pulsating water pressure in the piston pump section that generates pulsating water can be automatically adjusted according to the pressure change in the toothbrush section, there is no change in the toothbrush rotation deflection angle due to operation switching of the toothbrush section. It is convenient for cleaning with a toothbrush.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a piston pump portion of a hydraulically driven toothbrush device according to an embodiment of the present invention, and FIG. 2 is a sectional view of the toothbrush portion. 1... Handle body, 2... Cylinder chamber, 3... Pulsating water supply pipe, 4...
・Toothbrush, 5... Piston, 7...
Spiral guide member, 9...Hollow support shaft, 16...
... spout, 18... valve, 20...
Operation lever, 21...Control piece, 25...
・Piston pump part, 26...Cylinder, 2
7°°°°°° Piston・30・・・Discharge port, 3
5...Ringing pressure adjustment section, 39...hole, 4
0... Bypass path, 41... Valve, 42
...Spring, 43...Screw.

Claims (1)

[Scope of Claims] 1. Consisting of a toothbrush section driven by pulsating water pressure and a piston pump section generating pulsating water pressure, the toothbrush section reciprocates in response to the pulsating water pressure and is converted into rotational motion to rotate the toothbrush. The piston pump part is equipped with a piston for swinging motion, a means for supplying a portion of the pulsating water to the toothbrush, and a means for opening and closing a supply path for supplying the pulsating water to the toothbrush, and the piston pump part is configured to control pressure fluctuations to the piston pressure receiving part of the toothbrush part. A water pressure 1-driven toothbrush device characterized by having an automatic pressure adjustment section that adjusts the pressure in the cylinder according to the pressure. 2. A patent claim in which the automatic pressure adjustment part is composed of a hole formed in the side of the cylinder, a bypass path leading from the hole to the suction side, a valve that presses against the hole, and a spring that presses the valve at a set pressure. The water pressure driven toothbrush device according to item 1.