JP2550650Y2 - Liquid biasing device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid urging device for driving a pump to urge a liquid and discharging the liquid from a nozzle, such as an oral hygiene device.

[0002]

2. Description of the Related Art Conventionally, for example, some oral hygiene devices include:
In order to select multiple nozzles appropriately and use them interchangeably,
For example, the nozzle was attached in the following configuration.

(1) As shown in FIG. 7, the other end of a tube 2 having one end connected to a discharge side of a pump (not shown) is connected to a base end (lower end in the figure) of a cylindrical holder 1. Then, the nozzle 2 is detachably attached to the holder 1 by fitting the base 2a of the nozzle 2 to the tip of the holder 1 in a liquid-tight manner via a waterproof O-ring 3.

(2) As shown in FIG. 6, an outer peripheral groove 2b is provided on the base 2a of the nozzle 2 on the upper side in the drawing. On the other hand, holder 1
Is provided with a plurality of hook portions 1c extending upward and having inward claws 1b at the tip (the upper end in the figure) 1a so as to be openable and closable. A spring 4 is provided on the outer periphery of the hook portion 1c, a cylindrical member 5 is slidably covered on the outer side of the spring 4, and the distal end 1a of the holder 1 is fitted to the base end of the cylindrical member 5. The cylindrical member 5 is formed by urging the inward annular convex portion 5a provided at the distal end thereof with the spring 4 to contact the hook portion 1c, and tightening the hook portion 1c with the annular convex portion 5a. When the nozzle 2 is to be mounted, the cylindrical member 5 is once depressed by hand, and then the base 2a is inserted into the hook portion 1c, and is fitted in a liquid-tight manner via the waterproof O-ring 3, so that the hook portion 1c The pawl 1b is engaged with the outer peripheral groove 2b. Then, release the hand and push up the cylindrical member 5 with the spring 4 so that the annular convex portion 5a is formed.
And tighten the hook portion 1c. When removing the nozzle 2, the cylindrical member 5 was pushed down to release the fastening of the hook portion 1 c, and the nozzle 2 was pulled out from the holder 1.

(3) As shown in FIG. 5, a screw portion 1d is provided on the inner periphery of the tip of the holder 1, and a screw portion 2c is also provided on the outer periphery of the base 2a of the nozzle 2. Then, the nozzle 2 was screwed into the holder 1 and attached to the holder 1 via a waterproof O-ring 3 in a liquid-tight manner.

[0006]

However, in (1) shown in FIG. 7, the waterproof O-ring 3 is attached to the holder 1 and the nozzle 2 so as to overcome the pressure of the liquid passing through the discharge passage 6 in the holder 1.
There is a problem that it is necessary to tighten relatively tightly between the nozzles, which makes it difficult to attach and detach the nozzle 2.

[0007] (2) shown in FIG. 6 has a problem in that the structure is complicated using the spring 4 and the cylindrical member 5 and the cost is increased.

In (3) shown in FIG. 5, the nozzle 2 must be rotated each time the nozzle 2 is attached and detached, which is troublesome. In addition, when the direction of the discharge port at the tip is appropriately adjusted by rotating the nozzle 2, it is necessary to provide a retaining mechanism for preventing the nozzle 2 from rotating excessively, thereby complicating the structure. There was a problem to do.

Therefore, an object of the present invention is to make it possible to easily attach and detach a nozzle without incurring complicated structure and high cost.

[0010]

SUMMARY OF THE INVENTION Therefore, the invention according to claim 1 is, for example, as shown in the following illustrated embodiments.
The base 17a of the nozzle 17 is fitted into the connecting portion 13 of the apparatus main body 10, the discharge path 14 of the apparatus main body 10 communicates with the discharge path 18 of the nozzle 17, and the liquid urged by the pump in the apparatus main body 10 is discharged. In the liquid urging device that discharges from the nozzle 17 through the discharge path from the discharge path 14, magnets 15 and 20 are provided at opposing portions of the connecting portion 13 and the base portion 17a, respectively.
In addition, the same number of magnetic poles 15b and 20b are provided by alternately arranging NS at the same pitch in the circumferential direction.

According to a second aspect of the present invention, in the liquid urging device according to the first aspect, the nozzle-side magnet 20 is rotatably provided with respect to the base portion 17a, as shown in the following embodiments. It is characterized by becoming.

According to a third aspect of the present invention, as shown in the following embodiments, a shock absorbing material 16 is provided between the magnets 15 and 20 in the liquid urging device according to the first aspect. It is characterized by becoming.

[0013]

According to the first aspect of the present invention, the nozzle 1
7 is attached to the apparatus body 10, the nozzle 17
Of the nozzle-side magnet 2
0 faces the main body side magnet 15, and the nozzle 17 is rotated as appropriate. Then, the north pole and the south pole are magnetically attracted to each other at a relative position where they face each other. When the nozzle 17 is removed, one of the magnets is rotated, and the same magnetic poles are opposed to each other by shifting such a relative position. Then
Both magnets 15 and 20 repel each other and separate.

According to the invention of claim 2, this nozzle 1
At the time of mounting 7, one nozzle-side magnet 20 rotates with the main body-side magnet 15 and the nozzle-side magnet 20 facing each other. Then
At the relative position where the north pole and the south pole face each other, they are magnetically attracted to each other. When the nozzle 17 is detached, the nozzle-side magnet 20 is rotated, and the same magnetic poles are opposed to each other by shifting such a relative position. Then, the two magnets 15 and 20 repel each other and separate.

According to the third aspect of the present invention, when the nozzle 17 is attached and the main body side magnet 15 and the nozzle side magnet 20 are attracted, the shock is absorbed by the cushioning material 16.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 shows the structure of the upper part of a hand-held oral hygiene apparatus according to an embodiment of the present invention. Reference numeral 10 in the drawing denotes a cylindrical device main body that can be gripped with one hand. The apparatus main body 10 has a liquid supply hole 11b formed in a top 11a in the outer case 11. Then, a tank chamber 12 is formed in the outer case 11. Although not shown, the tank chamber 12 is connected to the suction side of the pump at the lower side. Then, in the center of the tank chamber 12, a cylindrical connecting portion 13 whose tip extends toward the liquid supply hole 11b.
To form The connecting portion 13 has a liquid discharge passage 1 therein.
4 and the base end (not shown) of the discharge passage 14 is connected to the discharge side of the pump. Further, the connecting portion 13 has a magnet mounting portion 13a at the tip, and fixes the main body side magnet 15 on the magnet mounting portion 13a. An annular recess 13b is provided on the inner periphery near the tip. The main body side magnet 15 is shown in FIG.
As shown in (a), the magnetic pole 1 has a donut shape with a through hole 15a at the center, and a plurality of magnetic poles 1 at the same pitch in the circumferential direction.
5b are alternately arranged in NS. Further, as shown in FIG. 1, a ring-shaped shock absorbing cushioning material 16 is fixed on the main body side magnet 15 by bonding or the like. The buffer member 16 and the through hole 15a penetrate the base portion 17a and are fitted to the discharge path 14, and the nozzle 17 is detachably and rotatably attached to the connecting portion 13.

As shown in FIG. 1, the nozzle 17 has a discharge passage 18 formed therein, and a discharge port 17c formed at a tip 17b.
Is opened, and an annular concave portion 17d is provided on the outer periphery of the base portion 17a.
Then, a waterproof O-ring 19 provided between the base portion 17a and the connecting portion 13 is held in a liquid-tight manner. Also, nozzle 1
7 has a flange portion 17e on a base portion 17a, and the flange portion 17e
The nozzle-side magnet 20 is provided on the lower surface, i.e., on the portion 17 f facing the connecting portion 13. The nozzle side magnet 20 is shown in FIG.
As shown in the figure, the shape is a polygon with a through hole 20a at the center, and a plurality of magnetic poles 20b are provided in the circumferential direction alternately with NS. In addition, the same number of magnetic poles 20b are arranged at the same pitch as the main body side magnet 15. Then, the base 17a is fitted into the through hole 20a, and the nozzle-side magnet 20 is rotatable with respect to the base 17a.

When the nozzle 17 is attached to the connecting portion 13 in the above-described oral hygiene apparatus, the base 17a is inserted into the discharge passage 14, the nozzle magnet 20 faces the main body magnet 15, and the nozzle 17 Is rotated. Then, as shown in FIG. 3A, the north pole and the south pole strongly adsorb to each other at a relative position where they face each other. Then, the nozzle 17 is attached to the connecting portion 13 as shown in FIG. At this time, the shock caused by the collision between the magnets 20 and 15 is absorbed by the cushioning material 21 interposed between the magnets 20 and 15. Thus, the mounting state as shown in FIG. 1 is obtained.

When the oral hygiene apparatus is used after the nozzle 17 is attached, the nozzle 17 is directed toward the oral cavity by holding the apparatus main body 10, and then the pump is operated to urge the liquid to be sucked and discharged. The liquid is discharged into the oral cavity from the discharge port 17c of the nozzle 17 through. In this case, when it is desired to adjust the direction of the discharge port 17c, the nozzle 17
Is rotated in an appropriate direction.

When the nozzle 17 is detached from the connecting portion 13 in order to replace it with another nozzle, the nozzle-side magnet 20 is rotated in an appropriate direction around the base 17a.
Then, from the relative position where the N-pole and S-pole alternately face each other,
As shown in FIG. 3B, the magnetic poles 20 of both magnets 20 and 15
The magnetic attraction is weakened by slightly shifting b.15b, and furthermore, as shown in FIG. 3 (c), the magnetic poles of the same polarity move to the opposite position. Then, both magnets 20 and 15
Repel each other and separate. As a result, the nozzle 17 comes off the connecting portion 13 due to the repulsive force.

In the illustrated embodiment described above, it is necessary to attach and detach the nozzle 17 by holding both the apparatus main body 10 and the nozzle 17 by hand. However, for example, with the following configuration, it is possible to attach and detach the nozzle with one hand.

That is, as shown in FIG. 4, a nozzle storage hole 25a is provided in a storage container 25 for storing nozzles, and a polygonal detent recess 25b is provided at the entrance of the nozzle storage hole 25a. And when storing the nozzle 17,
As shown in FIG.
7 is inserted into the nozzle receiving hole 25a, and the nozzle-side magnet 20 is fitted together with the flange 17e into the rotation-stopping recess 25b.
Is stored in the storage device 25. However, when using,
Hold the apparatus body 10 only with one hand and hold the base 17a of the nozzle 17
Is inserted into the connecting portion 13, the apparatus main body 10 is turned in an appropriate direction, the magnet 15 and the nozzle-side magnet 20 are opposed and adsorbed, and the nozzle 17 and the apparatus main body 10 are connected. Thereafter, the nozzle 17 is pulled out from the container 25.

[0023]

Therefore, according to the first aspect of the present invention, a body-side magnet and a nozzle-side magnet are provided at the opposed portion of the connecting portion of the apparatus body and the base portion of the nozzle, respectively. The side magnet and the nozzle side magnet are opposed to each other and are attracted. When removing, both magnets are rotated and both magnets are repelled and separated, without complicating the structure and increasing the cost. The nozzle can be easily attached to and detached from the apparatus main body.

According to the second aspect of the present invention, since one nozzle-side magnet is provided rotatably with respect to the base of the nozzle, the nozzle is rotated to change the direction of the discharge port of the nozzle. In this case, it is possible to prevent the problem that the nozzle-side magnet is rotated around the nozzle and separated from the main-body-side magnet.

According to the third aspect of the present invention, when the nozzle-side magnet and the main-body-side magnet are attracted to each other, the shock is absorbed by the cushioning material, and the user's comfort can be improved.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing the structure of the upper part of a hand-held oral hygiene device according to an embodiment of the present invention.

FIGS. 2 (a) and 2 (b) are plan views showing the arrangement of magnetic poles of a main body side magnet and a nozzle side magnet in this oral hygiene apparatus.

3 (a) is a state in which the main body side magnet and the nozzle side magnet are attracted to each other, FIG. 3 (b) is an intermediate state in which the attracted state shifts to a repulsive state, and FIG. FIG.

FIG. 4 is a sectional view showing another example of a method of attaching and detaching a nozzle in the oral hygiene device.

FIG. 5 is a longitudinal sectional view showing a nozzle mounting structure in a conventional oral hygiene device.

FIG. 6 is a longitudinal sectional view showing another nozzle mounting structure in a conventional oral hygiene device.

FIG. 7 is a longitudinal sectional view showing still another nozzle mounting structure in a conventional oral hygiene device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Apparatus main body 13 Connecting part 14 Ejection path 15 Main body side magnet 15b Magnetic pole of main body side magnet 16 Shock absorbing material 17 Nozzle 17a Base 18 Discharge path 20 Nozzle side magnet 20b Magnetic pole of nozzle side magnet

Claims (3)

(57) [Scope of request for utility model registration] 1. A base portion of a nozzle is fitted into a connecting portion of an apparatus main body, and a discharge path of the apparatus main body and a discharge path of the nozzle communicate with each other, and a liquid urged by a pump in the apparatus main body is discharged from the discharge path. In the liquid urging device that discharges from the nozzle through the discharge path, magnets are respectively provided at opposing portions of the connecting portion and the base portion, and the same number of magnetic poles are arranged on those magnets alternately at the same pitch in the circumferential direction by NS. A liquid urging device comprising: 2. The liquid urging device according to claim 1, wherein the nozzle-side magnet is provided rotatably with respect to the base. 3. The liquid urging device according to claim 1, wherein a shock absorbing material is provided between the magnets.