JPH11210633A - Suction device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the generation of an abnormal rise of the suction pressure. SOLUTION: This suction device carries out the suction by generating a negative pressure by the variation of the inner capacity of a pump chamber 12 by the reciprocating drive of a diaphragm 10. Ribs 15 are provided on the opposite surfaces of the diaphragm 10, at the inner wall of the pump chamber 12. Or ribs 15 are provided on the opposite surfaces in the diaphragm 10 opposite to the inner wall of the pump chamber 12. Even though the suction pressure is raised by the invasion of a foreign matter to the pump chamber 12, the diaphragm 10 is never adsorbed to the inner wall of the pump chamber 12 by the existence of the ribs 15, and thereby, a sudden rise of the suction pressure resulting from the generation of the adsorption is not generated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction device using a diaphragm pump. It is about.

[0002]

2. Description of the Related Art A suction device in a suction-type beauty device uses a diaphragm pump. In this diaphragm pump, as shown in FIG. 5, a diaphragm 10 moves to one side and a pump chamber 12 is moved. The suction pressure P is determined by the ratio between the state where the internal volume of the pump chamber is increased and the state where the internal volume of the pump chamber is reduced by moving to the other side. Fig. 5 (a)
If the maximum internal volume in the state shown in FIG. 5 is V1, the minimum internal volume in the state shown in FIG. 5B is V2, and the atmospheric pressure is P1, the suction pressure P is P = V1 · P1 / V2. Therefore, when used in the above-mentioned suction-type beautifier, the internal volumes V1,
V2 is set.

[0003]

By the way, in this type of suction pump, a filter is attached to the suction side to prevent the intrusion of foreign matter in order to hinder the operation if foreign matter intrudes. It is difficult to prevent moisture intrusion, and when moisture invades, the following problems occur.

That is, if water enters, the suction pressure increases because the minimum internal volume decreases, and when the suction pressure exceeds a certain pressure, the elastic portions of the diaphragm 10 face each other as shown in FIG. Even when the diaphragm is driven, the elastic portion may remain on the wall surface only by operating the coupling portion 11 with the drive system even if the diaphragm is driven. At this time, V1 '<V1, V
To satisfy 2 ′ << V2, the suction pressure P (P = V1 ′ · P
1 / V2 ') rises sharply, and if a suction-type beauty device is used without noticing this, there is a possibility that the skin may be damaged.

[0005] The present invention has been made in view of such a point, and an object of the present invention is to provide a suction device that does not cause an abnormal increase in suction pressure.

[0006]

According to the present invention, there is provided a suction device for performing suction by generating a negative pressure by a change in the internal volume of a pump chamber due to reciprocal driving of the diaphragm. The rib is provided on the surface of the diaphragm facing the pump chamber wall.

[0007] Even if the suction pressure rises due to the intrusion of foreign matter into the pump chamber, the diaphragm does not adsorb to the inner wall of the pump chamber due to the ribs, so that the suction pressure rises sharply due to the suction. It does not occur.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of an embodiment of the present invention will be described. FIGS. 2 and 3 show a suction-type beautifier provided with a suction device according to the present invention. The housing 2 has a motor 3 and a battery 4 built therein, a diaphragm pump 1 as a suction device at one end side, a switch handle 5 on the front side, and an attachment 6 detachably mounted on one end side. Have been. In the figure, reference numeral 20 denotes a circuit board provided with a switch section and the like, and reference numeral 21 denotes a holding frame for the motor 3 and the diaphragm pump 1.

The diaphragm pump 1 is mounted on the holding frame 21.
The diaphragm 10 is disposed on one side of the pump case 13, and the periphery of the diaphragm 10 is clamped and fixed between the pump case 13 and the holding frame 21.
An eccentric shaft 22 fixed to the output shaft of the motor 3 is connected to a connecting portion 11 provided at the center of the diaphragm 10. The diaphragm 10 reciprocates.

A cover 16 is provided on the other side of the pump case 13.
The cover 16 and the pump case 4 are attached.
5, an intake valve 17 and an exhaust valve 18 are provided. The pump chamber 12 is connected to the intake valve 17 and the exhaust valve 1 through a through hole 14 passing through the center of the pump case 13.
8 and is further connected to a ventilation hole 30 penetrating through the cover 16 via an intake valve 17.
A filter 31 is provided at the tip of the ventilation hole 30, and the attachment 6 is attached to the cover 16.
And a hole connected to the vent hole 30.

When the diaphragm 10 is driven by operating the motor 3, the intake valve 17 and the exhaust valve are opened and closed according to the change in the internal volume of the pump chamber 12, and the intake valve 17 is opened to allow air to flow into the pump chamber 12. At the time of taking in, if the opening edge of the attachment 6 is brought into close contact with the skin, the skin will be sucked. Here, the pump case 13 of the diaphragm pump 1 has radial ribs 15 on the surface of the diaphragm 10 facing the elastic portion as shown in FIG. When foreign matter such as water enters the pump chamber 12, the suction pressure increases, but the elastic portion of the diaphragm 10 is adsorbed on the inner wall of the pump chamber 12 due to the air layer generated by the presence of the rib 15. That will not be lost,
Therefore, a situation in which the suction pressure suddenly rises due to the suction does not occur.

Even if the ribs 15 are provided on the surface of the diaphragm 10 on the side of the pump chamber 12 as shown in FIG. Therefore, a situation in which the suction pressure rises sharply does not occur.

[0013]

As described above, according to the present invention, in a suction device for performing suction by generating a negative pressure by a change in the internal volume of a pump chamber due to reciprocal driving of the diaphragm, the pump chamber wall faces the surface facing the diaphragm. Having ribs,
Alternatively, since the rib is provided on the surface of the diaphragm facing the pump chamber wall, even if the suction pressure increases due to the intrusion of foreign matter into the pump chamber, the diaphragm does not stick to the pump chamber wall, and It does not cause a sudden increase in suction pressure due to the occurrence of suction, and does not damage the skin even when used in a suction-type facial beauty device.

[Brief description of the drawings]

FIG. 1 shows an example of an embodiment of the present invention, in which (a)
(b) is a sectional view, and (c) is a front view of a pump case.

FIG. 2 is a cross-sectional view of a suction-type beautifier provided with the above suction device.

FIG. 3 is a front view of a suction-type beautifier provided with the suction device according to the first embodiment.

FIG. 4 shows an example of another embodiment, in which (a) and (b) are cross-sectional views, and (c) is a rear view of a diaphragm.

FIG. 5 shows a conventional example, in which (a) and (b) are sectional views.

6 (a) and 6 (b) are cross-sectional views showing a problem of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Diaphragm pump 10 Diaphragm 12 Pump chamber 15 Rib

Claims (2)

[Claims] 1. A suction device for performing suction by generating a negative pressure by a change in the internal volume of a pump chamber due to reciprocal driving of a diaphragm, wherein a rib is provided on a surface of the pump chamber facing the diaphragm. Suction device. 2. A suction device for performing suction by generating a negative pressure by a change in the internal volume of a pump chamber due to reciprocal driving of a diaphragm, wherein a rib is provided on a surface of the diaphragm facing the pump chamber wall. Suction device.