Suction device

Abstract

To provide a suction device that exhibits excellent quietness without increasing noise not only when used horizontally but also when used in a tilted state.SOLUTION: A suction pump unit 3 is supported by a swinging support column 4 fixed to a bottom member 22 so that the suction pump unit 3 is swingable within a casing 2. A cylindrical leg portion 21e of a support column part 21c provided in the casing body 21 so as to face the bottom member 22 side is inserted through a support column part insertion hole 39b which is provided in a base part 3b of the suction pump unit 3 and has an inner diameter larger than the outer diameter of the cylindrical leg portion 21e. A vibration-absorbing material 21h is provided around the cylindrical leg portion 21e such that the vibration-absorbing material 21h abuts the support column part insertion hole 39b, and the suction pump unit 3 swings only to a position where it does not come into contact with an inner wall surface of the casing 2.SELECTED DRAWING: Figure 7

Description

Technical Field

[0001] The present invention relates to a suction device capable of sucking a liquid substance.

Background Art

[0002] For example, as a suction device capable of sucking a liquid substance, there is one used, for example, in a nasal aspirator for sucking the nasal mucus of a baby who cannot blow his or her own nose. As a suction device used in a conventional nasal aspirator, there is already known one in which a suction pump unit including a suction pump and a motor is built in a casing (also referred to as a housing) (Patent Documents 1, 2, and 3).

[0003] In addition, in the suction device as described above, a suction device 100 as shown in FIGS. 14 and 15 has already been put on the market. This suction device 100 includes a suction pump unit 200 composed of a suction pump 210, a motor 220 for driving the suction pump 210, and a base portion 230 for supporting these from below, which is accommodated in a casing 300.

[0004] In addition, in the suction pump unit 200, the base portion 230 is supported by a swing support column 400 made of a rubber elastic body whose lower end is fixed to the bottom member 310 of the casing 300. That is, the swing support column 400 has a base portion 230 supported at its upper end portion and a constricted portion 410 at an intermediate portion.

[0005] As described above, in this suction device 100, the base portion 230 of the suction pump unit 200 is supported by the swing support column 400 whose lower end is fixed to the bottom member 310 of the casing 300. Since the vibration generated by the operation of the suction pump 210 of the suction pump unit 200 and the motor 220 that drives the suction pump 210 is transmitted to the swing support column 400 via the base portion 230, the vibration is absorbed by the swing support column 400 and is less likely to be directly transmitted to the bottom member 310, preventing the vibration noise from leaking outside the casing 300 as noise.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0007] By the way, the suction device 100 as described above is not only placed on a horizontal flat surface, but also when the suction device 100 is used in a tilted state, such as when the placement surface is tilted, there are irregularities on the placement surface, or when it is held by hand. However, in order to enhance the vibration absorption property, the swing support column 400 is provided with a constricted portion 410 in the middle part and is easily bent. Therefore, when the inclination becomes large, as shown in Fig. 15, the suction pump unit 200 swings greatly, a part of the suction pump unit 200 hits the inner wall surface of the casing 300, and the vibration of the suction pump unit 200 is directly transmitted to the casing 300, making it easy for the vibration to leak outside the casing 300 as noise.

[0008] On the other hand, if the material of the swing support column 400 is made hard, or the degree of constriction of the constricted portion 410 is reduced, etc., so as to suppress the amount of easy bending of the swing support column 400, the swing of the suction pump unit 200 can be suppressed to a small extent, and it is possible to prevent the suction pump unit 200 from contacting the inner wall surface of the casing due to the swing. However, the swing support column 400 cannot sufficiently absorb the vibration transmitted to the swing support column 400, and it easily leaks out as noise outside the casing 300 through the bottom member 310.

[0009] In view of the above circumstances, an object of the present invention is to provide a suction device that has excellent quietness and does not generate a large amount of noise when used not only horizontally but also in an inclined state.

Means for Solving the Problems

[0010] In order to achieve the above object, the suction device of the present invention includes a pump unit, a suction pump including a motor for operating the pump unit, a suction pump unit including a base unit for supporting the suction pump, and at least accommodating the suction pump unit and having a connection port for a suction nozzle to which a suction nozzle can be connected from the outside. The casing includes a bottom member and a casing body that forms a space for accommodating at least the suction pump unit between the bottom member. The bottom member has a plurality of swing struts with lower ends fixed to its bottom, and the suction pump unit is a suction device that is horizontally swingably supported by the plurality of swing struts. In the casing, there are a plurality of strut portions extending from at least one of the casing body and the bottom member to the other. The base unit has a strut portion insertion hole through which at least one of the strut portions is inserted at a position facing at least one of the strut portions. The strut portion insertion hole is sized to be able to regulate the swing of the suction pump unit within a range where the strut portion contacts the inner peripheral wall of the strut portion insertion hole due to the swing and a part of the suction pump unit can be prevented from contacting the casing within the casing, and at least one of the inner peripheral surface of the strut portion insertion hole and the portion of the strut portion that contacts the inner peripheral surface of the strut portion insertion hole is formed of a vibration-absorbing material.

[0011] Although not particularly limited, the suction device of the present invention preferably has a configuration in which at least a part of the peripheral wall of the suction pump and the base unit are integrally formed by resin molding. That is, with the above configuration, the number of parts can be reduced, the manufacturing process can be simplified, and cost reduction can be achieved.

[0012] Although not particularly limited, the swing strut of the suction device of the present invention preferably has a configuration formed of a rubber elastic body having a constricted portion between a swing portion that supports the base unit and a bottom fixing portion fixed to the bottom of the bottom member. That is, if configured as described above, the swingability can be controlled by the constricted portion, so that a general-purpose rubber material can be used, and cost reduction can be achieved.

[0013] The suction device of the present invention is not particularly limited, but preferably has a configuration in which the suction pump unit has two suction pump parts, and a mechanism is provided in which a cam connected to the diaphragm valve of each suction pump part is driven by one motor. That is, if configured as described above, a suction pump unit that is small and has high suction performance can be obtained.

Effects of the Invention

[0014] As described above, the suction device of the present invention includes a pump part, a suction pump including a motor that operates this pump part, a suction pump unit that includes a base part that supports this suction pump, and at least houses the suction pump unit, and has a connection port for a suction nozzle to which a suction nozzle can be connected from the outside. The casing includes a bottom member and a casing body that forms a space for housing at least the suction pump unit between the bottom member. The bottom member has a plurality of swing struts with their lower ends fixed to its bottom, and the suction pump unit is swingably supported in the horizontal direction by the plurality of swing struts. The suction device is characterized in that in the casing, there are a plurality of strut parts extending from at least one of the casing body and the bottom member to the other, and the base part has a strut part insertion hole through which at least one of the strut parts passes at a position facing the strut part. The strut part insertion hole is sized such that the suction pump unit can swing, and the swing can be restricted within a range that can avoid the strut part contacting the inner peripheral wall of the strut part insertion hole and a part of the suction pump unit contacting the casing within the casing due to the swing. At least one of the inner peripheral surface of the strut part insertion hole and the portion of the strut part that contacts the inner peripheral surface of the strut part insertion hole is formed of a vibration-absorbing material, so that it has the following effects.

[0015] That is, even when used in an inclined state, the outer peripheral surface of the support column portion only swings to a position where it abuts against the inner peripheral surface of the support column insertion hole and the suction pump unit does not contact the inner wall surface of the casing. Moreover, even when the outer peripheral surface of the support column portion abuts against the inner peripheral surface of the support column insertion hole, vibrations generated on the suction pump unit side are absorbed by the vibration-absorbing material and are difficult to be transmitted to the casing side. Therefore, whether the suction device is used horizontally or in an inclined state, noise does not increase, and a suction device with excellent quietness can be obtained.

Brief Description of the Drawings

[0016]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Mode for Carrying Out the Invention

[0017] Hereinafter, the present invention will be described in detail with reference to the drawings showing its embodiments. FIGS. 1 to 13 show a first embodiment of the suction device of the present invention.

[0018] As shown in FIG. 1, this suction device 1 is used as a nasal inhaler, and the casing 2 includes a casing body 21, a bottom member 22, and a nasal mucus trap 23. In FIG. 1, 24 is a power supply connector and 25 is a knob switch.

[0019] The casing body 21 is provided with a fitting recess 21a for the nasal mucus trap 23 in a shape in which a part of the circumferential direction of the upper end portion is cut out, and a knob switch 25 of the suction pump unit 3 on its upper surface. Although not shown, the fitting recess 21a is configured such that the nasal mucus trap 23 is detachable, and in a mounted state where the nasal mucus trap 23 is completely fitted into the fitting recess 21a, a suction port for connecting the inside of the nasal mucus trap 23 and a suction path (not shown) of the suction pump unit 3 described in detail later is provided on the inner wall surface. As shown in FIG. 2, the knob switch 25 is provided with a sealing material 25a made of a soft elastic material in a gap with the casing body 21, and can maintain an airtight state inside the casing body 21.

[0020] Further, as shown in FIG. 1 or FIG. 2, the casing body 21 has a substantially spindle-shaped inverted cup shape with a circular cross-section, excluding the fitting recess 21a of the nasal discharge trap 23. An annular rib 21b that fits into a fitting groove 22f of a bottom member 22 described later is provided at the lower end, and six (only two are shown in FIG. 2) support columns 21c arranged in a circular pattern at equal pitches in the circumferential direction of the casing body 21 are provided on the inside. The support column 21c intermittently has a meat-thinning recess, and includes a support column main body 21e having a square outer shape and a columnar leg portion 21f extending from the lower end of the support column main body 21e.

[0021] The columnar leg portion 21f has a diameter that is substantially the same as or slightly smaller than the inner diameter of the support column receiving hole 22c of the bottom member 22, which will be described in detail later. Among the six support columns 21c, four support columns 21c are arranged so as to penetrate through the support column insertion holes 39b of the base portion 3b, which will be described in detail later. A tube-shaped vibration-absorbing material 21h made of a rubber elastic body such as silicone rubber is fitted to the columnar leg portion 21f at a portion facing the support column receiving hole 22c.

[0022] The nasal discharge trap 23 is fitted into the fitting recess 21a as described above and is provided with a tube connection nozzle 23a. The tube connection nozzle 23a is adapted to connect to a suction tube unit 5 having a suction nozzle 51 with a trap at its tip.

[0023] That is, the nasal discharge trap 23 stores the nasal discharge sucked through the suction tube unit 5 inside, so that the suction pump unit 3 can suck only air. Further, the nasal discharge trap 23 can be removed from the fitting recess 21a to wash the nasal discharge accumulated inside.

[0024] As shown in FIGS. 3, 5, and 6, the bottom member 22 has a circular cross-section, a dish-shaped bottom member body 22a whose peripheral edge rises upward, six support column receiving holes 22c, and four swing support columns 4. The bottom member body 22a has an annular groove 22f annularly provided on its upper end surface. The annular groove 22f has a ring-shaped sealing material 27 made of a foamed resin elastomer or foamed rubber fitted therein. And when the casing body 21 and the bottom member 22 are in a closed state, the annular rib 21b of the casing body 21 fits into the annular groove 22f while compressing and deforming the sealing material 27.

[0025] The six support receiving holes 22c are sized such that the cylindrical legs 21f of the support portion 21c can fit therein, and screw insertion holes 22d are formed at the bottom thereof. Then, the bottom member 22 and the casing body 21 are fixed in a closed state by the cylindrical legs 21f of the support portion 21c fitting into the corresponding support receiving holes 22c respectively, and fixing screws 26 are screwed into the screw holes of the cylindrical legs 21f through the screw insertion holes 22d from the bottom surface side of the bottom member 22.

[0026] The swing support 4 is formed of an elastic material made of rubber or elastomer. As shown in FIGS. 2, 3, and 7, the lower end is fixed to the bottom member 22, and has a constricted portion 41 for facilitating bending at an intermediate position in the vertical direction. The upper side of the constricted portion 41 becomes a swing portion 42 that swings due to the bending of the constricted portion 41. And the swing portion 42 is provided with an annular engagement groove 42a that engages with the swing support fitting portion 39a of the base portion 3b, which will be described in detail later.

[0027] The suction pump unit 3 includes a suction pump 3a and a base portion 3b as shown in FIGS. 4, 5, 6, 8, and 9. The suction pump 3a includes a pump portion 31 and a motor 32.

[0028] The pump portion 31 includes a diaphragm valve drive member housing portion 33, a pair of check valve support members 34, a pair of suction and exhaust chamber forming members 35, a pair of diaphragm valves 36, a pair of clamping plates 36b, a diaphragm valve drive member 38, and a lid 39 for the diaphragm valve drive member housing portion 33. The diaphragm driving member accommodating portion 33 is a resin molded product, and its lower end portion is integrally molded with a base portion 3b which will be described in detail later.

[0029] Also, as shown in FIG. 13, the diaphragm driving member accommodating portion 33 has a motor mounting portion 33b on one side surface in the short side direction, and as shown in FIG. 9, an insertion port 33a for the diaphragm valve driving member 38 is opened on the other side surface in the short side direction. As shown in FIGS. 8 and 9, the insertion port 33a is configured such that a lid 33f is fixed with screws and closed.

[0030] Furthermore, as shown in FIG. 11, on both sides in the longitudinal direction of the diaphragm driving member accommodating portion 33 (only one side is shown in FIG. 11), there are diaphragm valve mounting ports 33c which open in a state of being provided with valve support ribs 33d for supporting the peripheral edge portion of the diaphragm valve 36 on the inner peripheral surface. As shown in FIG. 13, the motor mounting portion 33b is provided with a shaft insertion hole 33e through which a rotation shaft 32a of a motor 32 to be described later is inserted.

[0031] As shown in FIG. 10, the diaphragm valve driving member 38 includes an eccentric cam 38a and two connecting rods 38b pivotally supported so as to be rotatable about the eccentric cam 38a via the eccentric cam 38a. The eccentric cam 38a is provided with a motor shaft fitting hole 38d having a deformed cross section. Each of the connecting rods 38b is provided with a valve support plate 38c at its tip.

[0032] Although not shown, the diaphragm valve driving member 38 is inserted into the diaphragm valve driving member accommodating portion 33 from the insertion port 33a in a state where both connecting rods 38b are bent in a U-shape about the eccentric cam 38a, and then, in the diaphragm valve driving member accommodating portion 33, by rotating both connecting rods 38b about the eccentric cam 38a, the valve support plates 38c are respectively accommodated in the diaphragm valve driving member accommodating portion 33 so as to face the outside from one of the diaphragm valve mounting ports 33c. Also, in this posture, the eccentric cam 38a is arranged such that its motor shaft fitting hole 38d faces the shaft insertion hole 33e of the motor mounting portion 33b.

[0033] The diaphragm valve 36 is supported at its central portion by the valve support plate 38c and at its outer edge portion in close contact with the valve support rib 33d. In this supported state, the valve fixing screw 36a is screwed in, and the portion supported by the valve support plate 38c is clamped and fixed between the clamping plates 36b.

[0034] As shown in FIG. 12, the check valve support member 34 includes an exhaust side check valve 34a and an intake side check valve 34b which has the same shape as the exhaust side check valve 34a and is provided in an upside - down state with respect to the exhaust side check valve 34a. A fitting groove 34c for a substantially dome - shaped packing (not shown) that partitions the exhaust side check valve 34a side and the exhaust side check valve 34a side is formed. Although not shown, the intake / exhaust chamber forming member 35 has an intake chamber and an exhaust chamber recessed by a partition on one surface. The intake chamber faces the intake side check valve 34b, the exhaust chamber faces the exhaust side check valve 34a, and the intake chamber and the exhaust chamber are hermetically partitioned by the packing. As shown in FIG. 8, the intake / exhaust chamber forming member 35 is fixed to the check valve support member 34 with screws.

[0035] The intake / exhaust chamber forming member 35 further includes an intake nozzle 35a communicating with the intake chamber and an exhaust nozzle 35b communicating with the exhaust chamber, respectively. The intake / exhaust chamber forming member 35 and the check valve support member 34 are overlapped such that the intake side check valve 34b faces the intake chamber, the exhaust side check valve 34a faces the exhaust chamber, and the packing fits into the fitting groove 34c. The fixing screw 30 is screwed into the end face of the diaphragm drive member housing portion 33 from the intake / exhaust chamber forming member 35 side, thereby fixing the intake / exhaust chamber forming member 35 to the diaphragm drive member housing portion 33.

[0036] Although not shown, one end of the first intake tube is connected to the intake nozzles 35a of the intake / exhaust chamber forming members 35 on both sides, respectively. And these first intake tubes are each connected at the other end to the cheese and are connected to the suction passage provided in the fitting recess 21a via a second intake tube connected to the branch pipe portion of the cheese. That is, the suction forces from the intake nozzles 35a on both sides are totaled so that the inside of the nasal mucus trap 23 can be decompressed through the suction passage with a strong suction force.

[0037] On the other hand, although not shown, one end of an exhaust tube is connected to each of the exhaust nozzles 35b of the intake and exhaust chamber forming member 35. Also, although not shown, the other end of the exhaust tube is connected to an exhaust hole provided at the bottom of the bottom member 22 so that the air exhausted from the exhaust nozzle 35b is exhausted from the exhaust hole.

[0038] As shown in FIG. 13, the motor 32 includes a rotating shaft 32a having the same cross-sectional shape as the motor shaft fitting hole 38d of the eccentric cam 38a. And the motor 32 is fixed to the motor mounting portion 33b in a state where the rotating shaft 32a is fitted into the motor shaft fitting hole 38d of the eccentric cam 38a through the shaft insertion hole 33e.

[0039] As shown in FIGS. 4 to 6, FIG. 8, FIG. 9, or FIGS. 11 to 13, the base portion 3b has a size that protrudes from the suction pump 3a and includes four swing support fitting portions 39a and four support portion insertion holes 39b. The swing support fitting portion 39a is formed in a substantially U-shaped notch that opens in the longitudinal direction on both sides of the longitudinal side edge of the protruding portion of the base portion 3b.

[0040] The support portion insertion hole 39b is formed in a circular shape with an inner diameter larger than the outer diameter of the vibration absorbing material 21h at a position corresponding to the four support portions 21c with the vibration absorbing material 21h attached on the inner side in the short direction of each swing support fitting portion 39a. And, as shown in FIGS. 5 and 6, the suction pump unit 3 including the base portion 3b is mounted on the bottom member 22 in a state of being swingably supported by the four swing struts 4 by fitting the swing strut fitting portions 39a into the engagement grooves 42a of the swing struts 4 at the inner edge portions of each U-shape.

[0041] As described above, after the suction pump unit 3 is mounted on the bottom member 22 via the swing struts 4, as shown in FIG. 2, the casing main body 21 is such that the four strut portions 21c with the vibration-absorbing material 21h mounted thereon penetrate through the strut portion insertion holes 39b, the columnar leg portions 21f are fitted into the strut receiving holes 22c, and the fixing screws 26 are screwed in from the bottom surface side of the bottom member 22, whereby the casing main body 21 is fixed to the bottom member 22.

[0042] And, in the state where the bottom member 22 of the suction device 1 assembled in this way is placed on a horizontal plane, as shown in FIG. 2, the swing portion 42 is disposed directly above the fixing portion of the swing strut 4 to the bottom member 22, and each vibration-absorbing material 21h is held in a non-contact state with respect to the inner edge of the strut portion insertion hole 39b. As shown in FIG. 7, when the suction device 1 is tilted, the swing portion 42 swings until at least one of the vibration-absorbing materials 21h comes into contact with the inner edge of the strut portion insertion hole 39b. Note that the strut portion insertion hole 39b has a hole diameter such that the suction pump unit 3 does not contact the inner wall surface of the casing 2 when any one of the vibration-absorbing materials 21h comes into contact with the inner edge of the strut portion insertion hole 39b. Also, in FIGS. 4 and 5, reference numeral 32b denotes a vibration absorber for the motor 32 made of foamed rubber or foamed resin, which may be provided as necessary.

[0043] Since the suction device 1 is configured as described above, it exhibits the following excellent effects. (1) Since the base portion 3b of the suction pump unit 3 is swingably supported by the four swing struts 4, the vibrations of the suction pump 3a and the motor 32 are absorbed by the swinging of the swing struts 4. (2) Since the four support columns 21c are respectively inserted into the corresponding support column insertion holes 39b, the movement range of the suction pump unit 3 can be restricted in all horizontal directions, and no matter in which direction it is tilted for use, the suction pump unit 3 will not contact the inner wall surface of the casing 2. (3) As shown in FIG. 7, even if the suction device 1 is tilted for use and swings until the vibration-absorbing material 21h abuts against the inner peripheral surface of the support column insertion hole 39b, the suction pump unit 3 will not directly contact the inner surface of the casing 2. Therefore, not only when the suction device 1 is used horizontally, but also when the suction device 1 is used in a tilted state, the noise will not increase, and it can be made excellent in quietness. (4) Since the vibration-absorbing material 21h is provided, the vibration of the suction pump unit 3 is absorbed by the vibration-absorbing material 21h, and it becomes difficult for the vibration to be transmitted to the casing main body 21 through the support column 21c. (5) Since the base portion 3b and the diaphragm valve drive member housing portion 33 are integrally formed, the number of parts can be reduced and the cost can be reduced. (6) The sealing material 27 is filled and mounted in the annular groove 22f. When the casing main body 21 and the bottom member 22 are in a closed state, the annular rib 21b of the casing main body 21 fits into the annular groove 22f while compressing and deforming the sealing material 27. Therefore, the sound of the motor 32 and the vibration sound of the suction pump unit 3 are less likely to leak out from the joint portion between the casing main body 21 and the bottom member 22 to the outside of the casing 2, and noise reduction can be achieved. (7) A sealing material 25a made of a soft elastic material is provided so as to close the gap between the casing main body 21 and the knob switch 25. Even if a gap is generated due to the molding error of the casing main body 21 and the knob switch 25, the gap is closed by the sealing material 25a. Therefore, the sound of the motor 21 and the vibration sound of the suction pump unit 3 are less likely to leak out to the outside of the casing 2, and noise reduction can be achieved. Note that the method of achieving noise reduction by using the sealing material 27 (25a) as described in (6) and (7) above can also be adopted in conventional suction devices.

[0044] The present invention is not limited to the above-described embodiments. For example, in the above-described embodiments, a vibration-absorbing material was attached to a position facing the column portion insertion hole of the column portion, but a rubber ring may be fitted inside the column portion insertion hole, or these may be used in combination. In the above-described embodiments, the casing had a circular cross-section, but it may have an oval cross-section or a rectangular cross-section.

[0045] In the above-described embodiments, the column portion insertion hole was circular, but it may be elliptical or polygonal. In the above-described embodiments, the base portion was integrally formed, but it may be formed separately and fixed and integrated with screws or an adhesive.

[0046] In the above-described embodiments, among the six column portions, four were provided so as to penetrate the corresponding column portion insertion holes, but if the object of the present invention can be achieved, only one column portion may penetrate the column portion insertion hole, or all six column portions may be provided so as to penetrate the column portion insertion holes respectively. In the above-described embodiments, a sealing material was provided at the joint portion between the casing body and the bottom member and at the gap portion between the knob switch and the casing body so that the sound of the motor and the vibration sound of the suction pump unit are less likely to leak outside the casing 2, thereby achieving noise reduction. However, the suction pump unit may be covered with a rubber elastic body to achieve noise reduction, or these may be used in combination.

[0047] In the above-described embodiments, the suction pump unit was configured to operate two pump portions by one motor, but it may be configured to operate one pump portion by one motor. In the above-described embodiments, the suction pump unit included a diaphragm type pump portion, but the type of the pump is not particularly limited, and a tube pump may be used.

Explanation of Reference Numerals

[0048] 1 Suction device 2 Casing 21 Casing body 21a Fitting recess 21b Annular rib 21c Support column part 21e Support column body part 21f Cylindrical leg part 21h Vibration absorbing material 22 Bottom member 22a Bottom member body 22c Support column receiving hole 22d Screw insertion hole 22f Fitting groove 23 Nasal mucus trap 23a Tube connection nozzle 24 Power supply connector 25 Knob switch 25a Sealing material 26 Fixing screw 27 Sealing material 3 Suction pump unit 3a Suction pump 3b Base part 30 Fixing screw 31 Pump part 32 Motor 32a Rotating shaft 32b Vibration absorbing material 33 Diaphragm valve drive member housing part 33a Insertion port 33b Motor mounting part 33c Diaphragm valve mounting port 33d Valve support rib 33e Shaft insertion hole 34 Check valve support member 34a Exhaust side check valve 34b Intake side check valve 34c Fitting groove 35 Suction and exhaust chamber forming member 35a Intake nozzle 35b Exhaust nozzle 36 Diaphragm valve 36a Valve fixing screw 36b Clamping plate 38 Diaphragm valve drive member 38a Eccentric cam 38b Connecting rod 38c Valve support plate 38d Motor shaft fitting hole 39a Rocking strut fitting part 39b Strut part insertion hole 4 Rocking strut 41 Constricted part 42 Rocking part 42a Engagement groove 5 Suction tube unit 51 Suction nozzle

Claims

1. A suction pump unit including a suction pump and a motor for operating the suction pump, and a base portion for supporting the suction pump unit body portion, A suction device comprising a casing that houses at least the suction pump unit and has a suction tube connection port to which a suction tube can be connected from the outside, The casing includes a bottom member and a casing body that forms a space for housing at least the suction pump unit between the bottom member and the bottom member, The bottom member has a plurality of swing struts with their lower ends fixed to the bottom thereof, The suction pump unit is a suction device that is horizontally swingably supported by the plurality of swing struts, In the casing, there are a plurality of support columns extending from at least one of the casing body and the bottom member to the other, The base portion has a support column insertion hole through which at least one of the support columns passes at a position facing at least one of the support columns, The support column insertion hole is sized such that the suction pump unit can swing and the support column contacts the inner peripheral wall of the support column insertion hole by swinging, and the swing can be restricted within a range that can avoid a part of the suction pump unit contacting the casing within the casing, A suction device, wherein at least one of the inner peripheral surface of the support column insertion hole and the portion of the support column that contacts the inner peripheral surface of the support column insertion hole is formed of a vibration-absorbing material.

2. The suction device according to claim 1, wherein at least a part of the casing of the suction pump and the base portion are integrally formed by resin molding.

3. The suction device according to claim 1 or claim 2, wherein the swing strut is formed of a rubber elastic body having a constricted portion between a base member support portion for supporting the base portion and a bottom fixing portion fixed to the bottom of the bottom member.

Images