Suction device

Abstract: The invention relates to a facial suction device for massaging facial skin and the like by suction, and its object is to control suction force appropriately and operation noise small. The suction device according to the invention includes a suction pump comprising a diaphragm (9) of which the center part is formed in a dome section (11), a suction valve (13a) and an exhaust valve (13b) both made of thin plate and disposed on the end of the diaphragm. And the dome section (11) of said diaphragm (9) is expanded and contracted by the rotation of an eccentric shaft of a motor (4), whereby the suction valve (13a) and the exhaust valve (13b) are operated to draw air in through a suction cylinder (19) and expel it through an exhaust port. The suction cylinder, with an adaptor on its end, is applied to the face.

Description: FIELD OF THE INVENTION This invention relates to a facial suction device for massaging the facial skin and the like by sucking. BACKGROUND OF THE INVENTION Generally, in case of conducting a facial treatment when making-up one's face and the like, a facial cream and the like is applied on the face to massage the skin spreading and extending the cream by hands. This massage quickens the circulation of the blood, stimulates and refreshes the skin to give a beautiful bare skin. It is convenient if such a treatment can be conducted by using a device with an automatic suction operation since an easy treatment can be done without trouble or labor, the massage of the whole face can be done uniformly and stain in pore of the skin is sucked to remove. For this purpose, a suction device and the like using reciprocate piston type suction pump is developed and partially used. However, in the suction device, there are disadvantages that the skin is hurt because of too large suction force and that users feel unpleasant because of too large noise occurred by driving the suction pump. It is difficult for the conventional device to conduct the effective facial treatment comfortably. DE 2,819,513 discloses a facial massage and cleansing device incorporating a motor which drives a pump, which gives suction on one part of the device, and a torque transmission member, which operates through a different part of the device. The torque transmission member is mounted on a locally fixed shaft which has an axial bore connected at one end of the suction side of the pump. The other end is attached to the part associated with the air intake. A massage brush can be attached in the axial direction of the shaft, the axis of which is preferably perpendicular to the motor shaft. JP 54-115949 discloses a device for massaging wet skin with a sucking action carried out by a diaphragm pump. A steam generator is incorporated in the device to make the skin soft and wet. OBJECT OF THE INVENTION Accordingly, the object of the invention is to provide a suction device with appropriate suction force and small operation sound of the suction pump. DISCLOSURE OF THE INVENTION In order to accomplish the above-mentioned object, a suction device according to the present invention comprises a hollow case having a front part (A) and a rear part (B), the front part of the case having a suction opening, a suction pump included in the case and a driving motor for the suction pump housed in the case, the case having an upper part (1b) and a lower part (1a), the suction device comprising: a bottom plate; a diaphragm made of flexible material and disposed on the bottom plate, the diaphragm forming a dome and having a flat section with first and second projections; first and second holes formed in the first and second projections, respectively; a suction valve made of flexible material extending from the wall to the center of the first hole; an exhaust valve made of flexible material extending from the wall to the center of the second hole; a suction cylinder of which one open end faces the suction valve and the other open end extends to the suction opening of the hollow case; an exhaust passage of which one end faces the exhaust valve and the other end communicates with the outside of the case; first and second channels on the surface of the bottom plate and extending from the dome portion of the diaphragm to the first and second holes, respectively, the dome portion of the diaphragm being connected to an eccentric shaft disposed on an axis of the motor, so that the dome moves up and down when the motor is operated. The device is characterised in that the suction opening is located in the upper part (1b) or the case at the end of the front part of the case forward of the suction valve so that the suction cylinder is inclined towards the end of the front part of the case and in that a filter is disposed in the suction cylinder. EFFECT OF THE INVENTION That is, the suction device according to the invention does not comprise a piston but a diaphragm having a suction valve and an exhaust valve. And said suction valve and exhaust valve are formed in a flexible or elastic thin plate form. Therefore, the suction force is arranged appropriately for a facial treatment, and at the same time noise occurred at the use is small, so that the facial treatment can be done pleasantly. When the treatment is conducted on a wide part such as cheek and on a narrow part such as surroundings of eyes, it is possible to conduct a treatment corresponding to the use every time by selecting properly and adapting different type adaptor to the tip part of a suction cylinder of the suction device. Furthermore, it is possible to prevent foreign substance from entering the suction pump by providing a filter in this suction cylinder, thereby the life of the suction device is extended and at the same time the cleanness of the suction device is maintained. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 illustrates, in plan view, an embodiment according to the present invention, Fig. 2 illustrates, in front view, the same, Fig. 3 illustrates, in vertical section, the same, Fig. 4 illustrates, in perspective view, a main part thereof, Fig. 5 illustrates, in back view, a flat section of a support base, Fig. 6 illustrates, in plan view, a diaphragm used therein, (a),(b), (c), (d) and (e) of Fig. 7 illustrate, in explanatory view, operation of a suction valve, and (a),(b), (c), (d) and (e) of Fig. 8 illustrate, in explanatory view, operation of an exhaust valve. EMBODIMENT Followings are descriptions in detail of embodiments according to the present invention. Figs. 1 to 3 illustrate an embodiment of a suction device according to the present invention. That is, in these figures, the reference numeral 1 indicates a cylinder-like case of which the middle portion is constricted in order to be gripped easily. Said case 1 is made by fitting a semi-cylindrical upper case 1b on a semi-cylindrical lower case 1a. The reference numeral 1c indicates a battery accommodation section cover disposed at said lower case 1a and provided removably. This suction device is divided into two, front and rear. The front part is formed as a suction pump block A and the rear part is formed as a battery block B. In the suction pump block A, a diaphragm pump type suction pump 9a and a motor 4 for driving it are accommodated. In the battery block B, battery or batteries 24 for supplying electric power to the motor 4 are accomodated. Said suction pump 9a and the driving motor 4 are disposed at a support base 2 integrally formed as shown in Fig. 4. The left part of the support base 2 in the figure is formed semi-cylindrical part 2a and the motor 4 is disposed therein in a state that the rotation axis 5 (invisible for concealment) of the motor is inserted into a setting hole (invisible for concealment) disposed on an interior wall. The reference numeral 6 indicates an eccentric shaft disposed at the rotation axis and 6a indicates its eccentric axis. The reference numeral 11 indicates a dome section of a diaphragm 9 to be mentioned later and 8 indicates a projection for fixing disposed at the summit thereof. The eccentric axis 6a of the motor 4 is inserted at the center of the projection 8 through a metal ring 7. By this, the dome section 11 of the diaphragm 9 moves reciprocately, up and down (see the drawing), by eccentric rotation of the eccentric axis 6a. The right part of said support base 2 in the figure forms a plate form section 2b having side walls at both right and left edges. The reference numerals 27a, 27b indicate setting portions disposed at both right and left side walls respectively. Said plate form section 2b has a hole 3 at its center and a suction cylinder 19 is planted in the front end of the plate form section 2b (the right side in the drawing). A filter 19a is accommodated exchangeably in said suction cylinder 19 as shown in Fig. 3. In Fig. 4, the reference numeral 20 indicates a reinforcing rib, 21 indicates a rubber ring for vibration prevention of the suction cylinder 19 and 22 indicates a ring form seal material disposed at the front end of the suction cylinder 19. In the back surface of said plate form section 2b of the support base 2, a recess 2c (shown in hatching) is formed as shown in Fig. 5 (a back view in a state that the diaphragm 9 is removed from Fig. 4). In the Fig. 5, the reference numeral 3 indicates a center hole and 16 shows a suction hole of the suction cylinder 19. A ring form groove 16a is formed around the suction hole surrounding it. Projections 17, which are low, are formed at circumference of said center hole 3, the surrounding edge section and the hole edge portion of the suction hole 16. The reference numeral 2d is a screw hole . The diaphragm 9 comprises a flexible or elastic plate made of rubber as shown in Fig. 6. The whole shape of the diaphragm 9 is formed to fit the whole shape of the recess 2c disposed at the back surface of said flat section 2b and the center portion thereof is formed as a dome section 11 so that it fits the center hole 3 of the flat section 2b. A thin plate suction valve 13a which corresponds to the suction hole 16 disposed at the back surface of said flat section 2b is formed at a semi-circular projection 10a of said diaphragm 9 on the same plane as the surface of the semi-circular projection 10a and movably up and down, and a thin plate exhaust valve 13b is also formed at a semi-circular projection 10b on the same plane as the back surface of the semi-circular projection 10b. The reference numerals 12a, 12b indicate holes at the circumference of valves 13a, 13b respectively. The reference numeral 14 indicates a shallow concave groove corresponding to the projections 17 at the back surface of said flat section 2b. The diaphragm 9 is unified with said flat section 2b as shown in Fig. 4 by positioning the dome section 11 in the center hole 3 of the flat section 2b and pressing the diaphragm 9 against the flat section 2b in a state that the suction valve 13a is fitted with the suction opening 16 of the flat section 2b in Fig. 5 and the exhaust valve 13b is fitted with the semi-circular hole 2e, which is lower by one step than the bottom of the recess 2c, surrounded by chain line A of the plate form section 2b. By this, the diaphragm 9 is fitted with the recess 2c at the back surface of the flat section 2b shown in Fig. 5 and the dome section 11 in the middle of the diaphragm 9 is protruded upward slightly from the center hole 3 of the flat section 2b as shown in Fig. 3. The concave groove 14 of the diaphragm 9 is engaged with the projection 17 at the back surface of the flat section 2b. By unifying said diaphragm 9 and the flat section 2b, the surface of the diaphragm 9 contacts closely the bottom part of the recess 2c shown in chain line in Fig. 5. In this case, the bottom part (surrounded portion in chain line A) corresponding to the semi-circular projection 10b having the exhaust valve 13b is lower by one step, so that at this part, a clearance is formed between the bottom of the recess 2c and the diaphragm 9. In this state, a fixing projection 8 planted at the dome section 11 is in connection with the eccentric axis 6a of the motor 4. And a bottom plate 18 is disposed at the back surface of the diaphragm 9 by utilizing a screw hole 2d of the support base 2. Thus the support base 2 with the motor 4 and the diaphragm 9 is fixed with the suction pump block A by utilizing setting portions 27a, 27b of the support base 2 as shown in Fig. 3. Thereby, the surrounding edge section of the diaphragm 9 is held and fixed between the flat section 2b of the support base 2 and the bottom plate 18. A first channel 28a which extends from the part corresponding to the dome section 11 of the diaphragm 9 to the part corresponding to a first hole 12a is formed on the surface of said bottom plate 18 as shown in Figs. 6 and 7. A suction opening 16 is opened and closed by a suction valve 13a which is disposed at the upper side of the first hole 12a. When the suction valve 13a is open, since the tip opening of the suction cylinder 19 is communicated with the inside of the dome section 11 of the diaphragm 9 through the first hole 12a and the first channel 28a, the suction can be conducted from the tip opening of the suction cylinder 19. A second channel 28b which extends from the part corresponding to the dome section 11 of the diaphragm 9 to the part corresponding to a second hole 12b is formed on the surface of said bottom plate 18 as shown in Figs. 6 and 8. Said second channel 28b is opened and closed by an exhaust valve 13b which is disposed at the lower side of the second hole 12b. In this case, as shown in Fig. 5, since the part surrounded by a chain line A is lower by a step in the recess 2c of the back of the support base 2, the part 10b of the diaphragm 9 corresponding there to is not in contact with the base of the recess 2c and forms the clearance connected to the atmosphere. As a result, when the exhaust valve 13b is open, the inner side of the dome section 11 of the diaphragm 9 is in communication with the outside through the second channel 28b and the above clearance, thereby the air in the dome can be exhausted outside. In Fig. 3, an adapter 23 which is cylindrical form and has large diameter from halfway is disposed removably at the tip of the suction cylinder 19, and a battery 24 is accommodated in a battery block B, the numeral 25 indicates a switch, and vibration inhibition sheet 26 is disposed at the bottom of the support base 2. At first, a facial cream is applied on a face and extended to fit the skin. Then, the switch 25 is turned on to start the motor 4, and the suction device is moved along the surface of the face during the tip opening of the adapter 23 is pressed slightly on the face. As a result, the air of the adapter 23 is sucked from the suction cylinder 19 into the inside of the dome section 11 by means of pumping function of the diaphragm 9 in the dome section 11 through the filter 19a. By this suction force, the cream is sucked, the facial skin is stimulated and the massage effect is occurred. In this case, the above suction force is occurred as shown in Fig. 7 and Fig. 8. When the projection for fixing 8 of the diaphragm 9 is lifted by the lifting force of the eccentric shaft 6 occurred by driving the motor 4, said lifting force is transmitted to the whole of the diaphragm 9. Thereby, the inner space of the dome section 11 expands as shown in Fig. 7 (a) and Fig. 8 (a) to be in a state of negative pressure. In this case, the root portion of the exhaust valve 13b is pulled upwardly and pressed to the edge of the flat section 2b. The tip side of the exhaust valve 13b goes down along the above edge as the fulcrum, and closes the second channel 28b, thereby the inner side of the dome section 11 is blockaded. In that time, the root portion of the suction valve 13a is also pulled upwardly and the tip side thereof goes down along the flat section 2b in the vicinity of the suction hole 16 as the fulcrum, thereby the suction hole 16 is opened. As a result, the air in the adapter 23 is sucked into the inner side of the above dome section 11 through the suction cylinder 19, the first hole 12a and the first channel 28a. Then the eccentric shaft 6 rotates, and the projection for fixing is brought down from the above state by lifting force occurred by the rotation. Thereby, the inner space of the dome section 11 is contracted as shown in (b) and (c) of Fig. 7 and (b) and (c) of Fig. 8. Accordingly, the air in the dome section 11 is compressed, pushes up the exhaust valve 13b and flows out by the pressure. At that time, the suction valve 13a is pushed up by the pressure of the air in the dome section 11, thereby the suction hole 16 of the suction cylinder 19 is blockaded, and then it prevents the air in the dome section 11 from flowing back to the suction cylinder 19. Next, the eccentric shaft 6 rotates, and the projection for fixing 8 is lifted again. Thereby, the inner space in the dome section 11 expands to be negative pressure state as shown in (d) and (e) of Fig. 7. The exhaust valve 13b closes the second channel 28b, the suction valve 13a opens the suction hole 16 of the suction cylinder 19, thereby the air in the adapter 23 is sucked into the inside of the dome section 11. Such an operation is repeated at regular cycle to conduct the suction operation. The adapter 23 can be exchanged according to the using condition at using the above suction device. In the case that a wide part such as, cheek and neck is treated, the adapter having large diameter is used. In the case that the suction force is too strong, the attachment made of the synthetic rubber is applied to the tip of the adapter, thereby the narrow part, such as, lower side of nose and surroundings of eye, can be treated. In the case that a part except the above is treated, an adapter having the different diameter from the above or the ellipsoidal caliber is used. As mentioned above, with the suction device according to the embodiment, by a cleansing effect of cream, a suction effect and a massage effect that facial skin is stimulated, the circulation of the blood is quickened, the skin becomes beautiful and is refreshed, and the user feels good. Since the suction valve 13a and the exhaust valve 13b are made of the thin rubber plate to make the occured sound small, and further since the vibration inhibition sheet 26 is disposed at the bottom side of the case 1 and the rubber ring 21 for vibration inhibiting is disposed between the reinforcing rib 20 of the suction cylinder 19 and the upper case 1b, the vibration is absorbed and the suction device is pleasantly used. Since the air to be exhausted flows from the gap of the diaphragm 9 and the support base 2 into the hollow case and it is exhausted outside from the clearance of fitting parts of upper and lower hollow cases, the exhaustion is smoothly conducted and also the inside of the hollow case is automatically cleansed. Further, since the filter 19a is accommodated in the suction cylinder 19, the foreign substance does not enter from outside, the life of the motor 4 is extended and the clean condition is maintained in the inside of the suction device. Application at using becomes sharply large by exchanging the adapter 23 according to the using condition.

Claims: A suction device comprising a hollow case (1) having a front part (A) and a rear part (B), the front part having a suction opening, a suction pump and driving motor (4) for the suction pump housed in the case, the case having an upper part (1b) and a lower part (1a), the suction device comprising: a bottom plate (18); a diaphragm (9) made of flexible material and disposed on the bottom plate, forming a dome (11) and having a flat section with first (10a) and second (10b) projections; first (12a) and second (12b) holes formed in the first and second projections, respectively; a suction valve (13a) made of flexible material extending from the wall to the center of the first hole; an exhaust valve (13b) made of flexible material extending from the wall to the center of the second hole; a suction cylinder (19) of which one open end faces the suction valve and the other open end extends to the suction opening of the hollow case; an exhaust passage of which one end faces the exhaust valve and the other end communicates with the outside of the case; first (28a) and second (28b) channels on the surface of the bottom plate and extending from the dome portion of the diaphragm to the first and second holes, respectively, the dome portion of the diaphragm being connected to an eccentric shaft (6) disposed on an axis (5) of the motor, so that the dome moves up and down when the motor is operated, characterised in that the suction opening is located in the upper part (1b) of the case at the end of the front part (A) of the case (1) forward of the suction valve so that the suction cylinder (19) is inclined towards the end of the front part (A) of the case and in that a filter (19a) is disposed in the suction cylinder (19) . A suction device according to claim 1, in which the suction opening of the suction cylinder (19) can accomodate removeably any of a plurality of differently shaped adaptors (23) . A suction device according to claim 1 or 2, in which the dome portion (11) of the diaphragm (9) passes through a hole (3) in a support base (2) which overlies the diaphragm, and in which each of the inlet (13a) and outlet (13b) valves is formed of the diaphragm by a partial cut-out in the diaphragm communicating with the dome portion through a respective one of the first and second channels (28a, 28b) in the bottom plate (18), the valves communicating respectively with the suction cylinder (19) and the exhaust passage through openings in the support base.

Inventors: SAKA KENJI, TERAI MASAO, YAMAMOTO KANJI, SAKA, KENJI, TERAI, MASAO, YAMAMOTO, KANJI
Applicants: KANEBO LTD, KEY TRADING CO LTD, KANEBO, LTD., KEY TRADING CO., LTD.
Application year: 1989
Main classification: A61H9
IPC codes: A61H9, A61H7, A45D44