JP2016043286A - Ultrasonic atomization device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ultrasonic atomization device capable of always stable atomization by allowing a vibration plate to abut and support on the upper end surface whole surface of a liquid absorption material by uniform pressing force with a simple structure.SOLUTION: An ultrasonic atomization device is formed in a structure that having a liquid storage container 3 having a liquid absorption material 4 in a case body 1, and an annular ring-shaped holder 6 for fixing a vibration plate 5a and a piezoelectric vibrator 5b is arranged on the lid body 2 side of the case body 1, and a boss 17 provided in an arm piece 16 projected in the annular ring-shaped holder 6, is vertically movably loosely fitted in a vertically long guide hole 20 projected in a bearing piece 19 suspended from the lid body 2 side, and rash action in the circumferential direction of the annular ring-shaped holder 6 is suppressed, and an under surface of the vibration plate 5a is always allowed to abut and support on the upper end surface whole surface of the liquid absorption material 4 by uniform pressing force by dead weight of the annular ring-shaped holder 6.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an ultrasonic atomizer that sprays liquid such as water, fragrances, insecticides, repellents such as small animals, etc. by vibration of an ultrasonic oscillating unit comprising a piezoelectric vibrator and a diaphragm. The present invention relates to an ultrasonic atomizer that uses a liquid material to supply liquid to the diaphragm of the ultrasonic oscillator.

  Ultrasonic atomization in which liquid in a liquid storage chamber such as a liquid container is sucked up by a liquid absorbing material and supplied to the vibration plate of the ultrasonic oscillation unit, and the liquid adhering to the vibration plate is atomized by the vibration energy of the ultrasonic oscillation unit As a device, devices having various structures have been developed. For example, in Patent Document 1, a cylindrical guide is erected in a liquid storage chamber, and this guide is always urged upward by a spring. The liquid absorbing material is inserted so as to be movable up and down, and a vibration plate fixed and supported by the piezoelectric vibrator is disposed above the liquid storage chamber, and the lower surface of the vibration plate is provided from the liquid storage chamber. An ultrasonic atomizing device is described in which the upper end surface of the liquid absorbing material protruding upward is brought into pressure contact with the elastic pressure of the spring.

  In Patent Document 2, an ultrasonic vibration unit is configured by fixing a piezoelectric vibrator integrally provided with a diaphragm to a ring-shaped support member, and the ultrasonic vibration unit is formed into a cylindrical guide member. The ultrasonic vibration unit is housed movably up and down with a slight gap, and the lower part of the vibration plate fixed to the piezoelectric vibrator without using a spring is immersed in the liquid storage chamber by its own weight. An ultrasonic atomizing device is described in which a liquid absorbing material disposed in a state is in contact with and supported by an upper end surface protruding from a liquid storage chamber.

JP-A-6-320083 Japanese Patent No. 5099410

  However, according to the former ultrasonic atomizing device, a gap is generated between the lower end of the liquid absorbing material and the inner bottom surface of the liquid storage chamber by the spring pushing up the liquid absorbing material, and the material is stored for a long time. When the liquid in the liquid chamber decreases and its liquid level becomes lower than the lower end surface of the liquid absorbing material, it cannot be atomized even though the liquid remains at the bottom of the liquid storage chamber. There is a problem that the liquid is wasted.

  Furthermore, it is difficult to adjust the spring force and the pressing force against the diaphragm becomes too large, making it difficult to ensure a stable contact state between the diaphragm and the liquid absorbing material, and the smooth atomization function is impaired. There is a problem.

  On the other hand, according to the latter ultrasonic atomizer, the diaphragm is placed on the liquid absorbing material by the weight of the ultrasonic vibration unit in which the piezoelectric vibrator integrally provided with the diaphragm is fixed to the ring-shaped support member. Since it is in contact with and supported by the end surface, the lower end surface of the liquid absorbing material can be brought into contact with and supported by the inner bottom surface of the liquid storage chamber, so that all the liquid in the liquid storage chamber can be fogged without remaining. The contact relationship between the diaphragm and the liquid absorbing material can be set to a contact pressure state that enables good atomization by reducing the weight of the ring-shaped support member. Since the cylindrical guide member is accommodated in a vertically movable manner with a slight gap, if the ultrasonic vibration unit is tilted due to vibration during transportation or installation, the ultrasonic wave Ring-shaped support in the vibration unit The outer peripheral corner portion of the guide member is locked to the inner peripheral surface of the guide member so that the diaphragm is in contact with the upper end surface which is the liquid absorbing surface of the liquid absorbing material obliquely, and the diaphragm and the upper end surface of the liquid absorbing material There is a problem that the contact state with the liquid is not uniform, and there is a portion where the liquid is not sufficiently supplied from the liquid absorbing material to the diaphragm, and stable atomization cannot be performed.

  The present invention has been made in view of such problems, and the object of the present invention is to bring the diaphragm into contact with and support the entire upper end surface of the liquid absorbent material with a uniform pressing force with a simple structure. Therefore, it is an object of the present invention to provide an ultrasonic atomizing apparatus that can always perform stable atomization.

  In order to achieve the above object, an ultrasonic atomizing device according to the present invention includes a case body and a lid body that is detachably covered with the case body and has a spray port at the center thereof. And a liquid storage container disposed in the case body, a liquid absorbing material in which the lower half of the liquid storage container is immersed in the liquid storage container, and an upper end of the liquid storage container protrudes upward from the mouth of the liquid storage container. An ultrasonic oscillator having a piezoelectric vibrator and a diaphragm that are in contact with and receiving the lower surface of the diaphragm against the upper end surface of the liquid-absorbing material; and disposed below the spray port of the lid. An annular holder that fixes the ultrasonic oscillator in an internally fitted state, an arm piece that projects from the outer peripheral surface of the annular holder, and a projecting surface that projects from the side of the tip of the arm piece A short-axis boss and the arm piece boss above the lid that is suspended from the lower surface of the lid Characterized in that it comprises a bearing piece having a vertically long guide hole movably loosely fitted in the direction.

  In the ultrasonic atomizing apparatus configured as described above, the invention according to claim 2 is a pair of the arm pieces projecting in parallel with each other at a small interval in the circumferential direction of the annular holder and these arms. While the bosses project from the outer surfaces of the pieces facing in opposite directions, a pair of bearing pieces are suspended from the lower surface side of the lid so as to sandwich the arm pieces, and these bearing pieces Bosses projecting from the pair of arm pieces are loosely fitted in the guide holes provided in the upper and lower directions, respectively.

  In the invention according to claim 3, the lower ends of the guide holes provided in the pair of bearing pieces are opened downward from the lower end surfaces of the bearing pieces, and a receiving plate member is installed between the lower end surfaces of these bearing pieces. The bearing piece is closed to the open end of the guide hole by the receiving plate member, and the bearing piece is more than the lower surface of the arm piece of the annular holder in which the boss is loosely fitted in the guide hole of the bearing piece. A gap is formed between the upper surface of the receiving plate member and the lower end surface of the arm piece of the annular holder with the lower end of the ring plate positioned downward.

  According to a fourth aspect of the present invention, the peripheral wall portion between the pair of arm pieces in the annular holder is cut out to form a lead wire outlet for drawing out the lead wire from the ultrasonic oscillator to the outside of the annular holder. It is characterized by being.

  According to a fifth aspect of the present invention, a short cylindrical partition wall is provided in the center of the case body, and a space surrounded by the partition wall is formed in the storage chamber of the liquid container. A space between the wall and the peripheral wall protruding from the outer peripheral edge of the case body is formed in a power storage chamber that supplies power to the ultrasonic oscillator.

  Furthermore, in the invention according to claim 6, a cap is attached to the mouth of the liquid container, and a vertical cylinder is provided at the center of the cap, and a liquid absorbing material is inserted into and supported by the vertical cylinder. It is characterized by being.

  According to the first aspect of the present invention, the liquid supply surface of the liquid absorbent material in which the lower half portion is immersed in the liquid storage container disposed in the case body and the upper end portion protrudes upward from the mouth portion of the liquid container; An ultrasonic atomizer configured to abut and support the vibration plate of the ultrasonic oscillator on the upper end surface, and to atomize the liquid sucked up by the liquid absorbing material by vibration of the vibration plate that vibrates by energization The ultrasonic oscillator is fitted and fixed in an annular holder, and an arm piece projects from the outer peripheral surface of the annular holder and projects from the side of the tip of the arm piece. The boss is loosely fitted in a vertically long guide hole provided in the lower part of the bearing piece suspended from the lower surface side of the lid of the case body, so that it can be freely moved in the vertical direction, so it fits in the annular holder. The center of the bottom surface of the diaphragm of the fixed ultrasonic oscillator Can be kept accurately abut, is the receiving in a stable state to the surface.

  Furthermore, even when the annular holder is tilted due to shaking or vibration during transportation, carrying or installation, the tip of the arm piece protruding from the outer peripheral surface of the annular holder The short-shaft boss provided on the bottom adjusts to the above-mentioned tilt while moving in the vertical guide hole provided at the lower part of the bearing piece that is suspended from the lower surface side of the lid body, and the vibration and vibration are reduced. In this case, it is possible to automatically return the diaphragm so that the lower surface of the diaphragm is in close contact with the entire upper end surface of the liquid absorbing material.

  Accordingly, the lower surface of the vibration plate of the ultrasonic oscillation unit is brought into contact with the entire upper end surface of the liquid absorbing material with a simple structure by utilizing the weight of the annular holder having the ultrasonic oscillation unit with a uniform pressing force. The liquid sucked up by the liquid absorbing material can be evenly supplied from the upper end surface of the liquid absorbing material to the entire lower surface of the diaphragm in contact with the upper end surface, and adheres to the diaphragm. The liquid can always be atomized stably by the vibration energy of the ultrasonic oscillator.

  According to the invention of claim 2, the arm pieces are paired on the outer peripheral surface of the annular holder, and protrude in parallel with each other at a small interval in the circumferential direction of the holder of the annular holder. While projecting bosses on the outer surfaces of the arm pieces facing in opposite directions, a pair of bearing pieces are suspended from the lower surface side of the lid so as to sandwich the arm pieces, and these bearing pieces Since the bosses projecting from the pair of arm pieces are freely fitted in the guide holes provided in the upper and lower directions, the circular holders are prevented from moving in the circumferential direction while preventing the circular holders from moving in the circumferential direction. Stable atomization function that can keep the central part of the lower surface of the diaphragm of the ultrasonic oscillation part fitted and fixed to the annular holder in contact with the entire upper surface of the liquid absorbent material Can be maintained.

  According to the invention of claim 3, since the lower end of the guide hole provided in the pair of bearing pieces is opened downward from the lower end surface of the bearing piece, when assembling and producing the ultrasonic atomizer, Insert a pair of arm pieces projecting from the outer peripheral surface of the annular holder provided with the ultrasonic oscillation portion into the guide hole from the lower end of the guide hole with a boss projecting from the outer surface of these arm pieces. However, it is possible to easily incorporate the annular holder into the pair of bearing pieces by intervening between the pair of bearing pieces, and then fix the receiving plate member between the lower end surfaces of the bearing pieces in an erected state. By closing the open end of the guide hole with the lever receiving plate member, the annular holder can be mounted so that it cannot be unintentionally detached from the bearing piece, and when the lid is opened, According to the top surface of the plate member An annular holder by the receiving arm piece annular holder Te can be catch to prevent withdrawal downwardly.

  Furthermore, the lower end of the bearing piece is positioned below the lower surface of the arm piece of the annular holder in which the boss is loosely fitted in the guide hole of the bearing piece, and the upper surface of the backing plate member and the arm piece of the annular holder Since the gap is formed between the lower end surface of the ring and the ultrasonic holder that is fitted and fixed to the annular holder without being obstructed by the receiving plate member, It is possible to contact and receive the entire upper surface of the material in an accurate and stable state, and the liquid adhering to the diaphragm can be efficiently atomized by the vibration energy of the ultrasonic oscillator.

  According to the invention of claim 4, the peripheral wall portion between the pair of arm pieces in the annular holder is excised to form a lead wire outlet for drawing out the lead wire from the ultrasonic oscillator part to the outside of the annular holder. Therefore, even if the ultrasonic oscillator is mounted in the annular holder, the lead wire connected to the ultrasonic oscillator can be pulled out through the outlet and the wiring in the case can be done easily and accurately. be able to.

According to the invention of claim 5, a short cylindrical partition wall is provided at the center of the case body, and a space surrounded by the partition wall is formed in the storage chamber of the liquid container. The space between the partition wall and the peripheral wall projecting from the outer peripheral edge of the case body is formed in the power supply storage chamber for supplying power to the ultrasonic oscillator, so that the liquid storage container and the power supply are connected to the case body. In addition to being able to be easily mounted at a predetermined position, the liquid container and the power source can be easily replaced, and the lead wire from the power source to the ultrasonic oscillator disposed above the liquid container, etc. it can be carried out of the wiring easily and accurately.

  According to the sixth aspect of the present invention, a cap is attached to the mouth of the liquid container, a vertical cylinder is provided at the center of the cap, and a liquid absorbing material is inserted into and supported by the vertical cylinder. Therefore, the liquid absorbing material can be easily and accurately disposed at the center of the liquid storage container so that the lower end of the liquid absorption material is in contact with the inner bottom surface of the liquid storage container, and the liquid remains at the bottom of the liquid storage container. All liquids can be atomized without any problems.

The longitudinal section front view of an ultrasonic atomizer. The perspective view of the ultrasonic atomizer of the state which opened the cover body. The disassembled perspective view of the arrangement | positioning part of the ultrasonic oscillation part between a cover body and a liquid storage container. The partial expanded sectional view of a diaphragm. FIG. 6 is a longitudinal front view of a part of the ultrasonic wave oscillating unit and the lid mounted on the liquid container. FIG. The simplified sectional view of the annular holder attachment part which has equipped the ultrasonic oscillation part. The longitudinal cross-sectional front view of the state which opened the cover body upwards from the case body. The perspective view which shows a use condition.

  A specific embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 3, the ultrasonic atomizing device integrally includes a cylindrical peripheral wall 1 b having a short height on the outer peripheral edge of the bottom plate portion 1 a. And a peripheral wall 2b having a fixed height downward from the outer peripheral edge of the top plate portion 2a. The lower half of the peripheral wall 2b is the upper half of the peripheral wall 1b of the case body 1. A liquid container 3 that includes a lid 2 that is detachably placed on the outer peripheral surface, and in which liquid such as water, fragrance, insecticide, repellents such as small animals is placed on the case body 1 side, While a liquid absorbing material 4 for sucking up the liquid in the liquid container 3 is disposed, an ultrasonic oscillation unit 5 that ultrasonically vibrates when energized on the lid 2 side, and the ultrasonic oscillation unit 5 is fitted in And an annular holder 6 fixed to the liquid container 3 so that the liquid in the liquid container 3 is struck by the liquid absorbing material 4. Is supplied to the oscillation portion 5, the liquid is atomized are configured to spray from the spray port 7 is opened in a central portion of the cover body 2 by the vibration of the ultrasonic generator 5.

  The ultrasonic oscillating device 5 will be described in more detail. The ultrasonic oscillating unit 5 has a ring-shaped piezoelectric vibrator 5b on the outer peripheral edge of a diaphragm 5a formed in a disk shape having a constant thickness and a constant diameter. The lead wires 8a and 8b having limit switches LS are connected to electrodes (not shown) provided on the upper and lower surfaces of the piezoelectric vibrator 5b, respectively, and the lead wires 8a and 8b are connected to the above. The ultrasonic circuit is connected to the oscillation circuit of the circuit board 9 attached to the lower surface of the lid member 2 and this oscillation circuit is connected to the power source 10, and the ultrasonic oscillation is generated from the oscillation circuit by energizing the oscillation circuit from the power source 10. The drive voltage is applied to the unit 5 to cause the ultrasonic oscillation unit 5 to vibrate ultrasonically.

  The diaphragm 5a in the ultrasonic oscillator 5 is made of a thin metal material such as nickel or stainless steel, and the piezoelectric vibrator 5b is made of piezoelectric ceramics. As shown in FIG. 4, the diaphragm 5a is formed with countless fine holes 11 having a small diameter from the lower end toward the upper end, penetrating in the thickness direction of the diaphragm 5a. The liquid absorbent material 4 is formed into a rod-shaped core shape having a constant diameter and length by a material having a high liquid absorbency such as urethane foam and other foamed resins in addition to fiber bundles such as synthetic resin fibers. Yes. The case body 1, the lid body 2, the liquid container 3, and the annular holder 6 are made of synthetic resin.

  A circular partition wall 1c having a fixed height standing from the bottom plate portion 1a is provided at the center of the case body 1, and a space surrounded by the partition wall 1c is formed in the liquid container 3. The space between the partition wall 1c and the peripheral wall 1b projecting from the outer peripheral edge of the bottom plate portion of the case body 1 is formed in the storage chamber 12, and power is supplied to the ultrasonic oscillator 5. It is formed in a power storage chamber 13 composed of a battery to be supplied.

  The liquid storage container 3 is integrally formed with a mouth 3b that is smaller in diameter than the container main body 3a and protrudes upward from the storage chamber 12 at the center of the upper end of the container main body 3a stored in the storage chamber 12 in a fitted state. The cap 3c is screwed into the opening 3b. Further, a vertical cylindrical body 14 having an upper end connected to the lower surface of the top surface portion of the cap body 3c is integrally provided at the center of the cap body 3c, and the lower end of the vertical cylindrical body 14 is connected to the container body section. 3a is opened upward, and the upper end is opened upward through a through hole 15 having the same diameter as the inner diameter of the vertical cylinder 14 drilled in the center of the top surface of the cap body 3c. By inserting the liquid absorbing material 4, the vertical cylindrical body 14 causes the lower end surface of the liquid absorbing material 4 to abut the inner bottom surface of the liquid storage container 3 and the upper end portion protrudes upward from the through hole 15. The liquid absorbing material 4 is supported.

On the other hand, the ultrasonic wave oscillating unit 5 has a lower surface central portion of the vibration plate 5a on the liquid absorbing material 4 below the spray port 7 provided in the central portion of the top plate portion 2a of the lid 2. It is disposed in the lid 2 so as to be in contact with and supported by the end face. As shown in FIG. 3, the annular holder 6 in which the ultrasonic wave oscillating portion 5 is fixed in the fitted state is provided with a liquid absorbing material insertion hole 6c having a diameter larger than that of the liquid absorbing material 4 at the center. An annular wall portion 6b having a height higher than the thickness of the ring-shaped piezoelectric vibrator 5b of the ultrasonic wave oscillating portion 5 is projected from the outer peripheral edge of the circular frame-shaped bottom portion 6a. The outer peripheral surface of the ring-shaped piezoelectric vibrator 5b is fitted to the inner peripheral surface of the lower half portion of the annular wall portion 6b, and the lower end surface of the ring-shaped piezoelectric vibrator 5b is placed on the circular frame-shaped bottom portion 6a. The piezoelectric vibrator 5b is fixed in the annular holder 6 in a contacted and supported state.

  The annular holder 6 includes an imaginary line extending in the extending direction of the diameter of the annular holder 6 with a small gap in the circumferential direction of the annular holder 6 from a part of the outer peripheral surface of the lower half of the annular wall 6b. A pair of left and right horizontally elongated rectangular arm pieces 16, 16 having a fixed length so as to be parallel to each other on both sides of the imaginary line with the center as the center, and the tips of these arm pieces 16, 16 Short-axis bosses 17 and 17 are projected in a direction perpendicular to the projecting direction of the arm pieces 16 and 16 on the outer surfaces facing the directions opposite to each other.

  Further, in the annular wall portion 6b of the annular holder 6, the peripheral wall portion between the pair of arm pieces 16, 16 is cut out over the entire height of the annular wall portion 6b and mounted in the annular holder 6. The lead wires 8a and 8b connected to the piezoelectric vibrator 5b of the ultrasonic oscillating unit 5 are formed in a lead wire outlet 18 for drawing out the annular holder 6. As described above, the lead wires 8a and 8b are connected to the oscillation circuit of the circuit board 9 mounted on the lower surface of the lid 2, and are further connected to the power source 10 from the oscillation circuit.

  On the other hand, the pair of protrusions projecting from the outer peripheral surface of the annular holder 6 on the lower surface of the top plate portion 2a on the outer peripheral side of the spray port 7 established at the center of the top plate portion 2a of the lid 2. Corresponding to the arm pieces 16, 16, a pair of rectangular plate-like bearing pieces 19, 19 are suspended in parallel with each other at a wider interval than between the arm pieces 16, 16. The pair of arm pieces 16 and 16 are sandwiched between the pair of arm pieces 16 and 16 so that the outer surfaces of the arm pieces 16 and 16 are along the lower portions of the inner surfaces of the bearing pieces 19 and 19 facing each other, and The arm pieces 16 and 16 are intervened.

  Further, the lower part of these bearing pieces 19 and 19 has a width slightly larger than the diameter of the bosses 17 and 17 projecting from the arm pieces 16 and 16, and the lower end is below the lower ends of the bearing pieces 19 and 19. The vertically long guide holes 20 and 20 that are open toward the center are formed, and the bosses 17 and 17 are inserted into the guide holes 20 and 20 through the lower end openings of the guide holes 20 and 20, The bosses 17 and 17 are loosely fitted in the guide holes 20 and 20 so as to be movable in the vertical direction and finely movable in the width direction of the guide holes 20 and 20, that is, in the length direction of the arm pieces 16 and 16. For example, when the diameter of the boss 17 is 2 mm, the width of the guide hole 20 is 2.5 mm and the length is 3.25 mm.

  The position of the lower end of the bearing pieces 19, 19 is from the lid body 2 side so as to be positioned lower than the height position of the upper end surface of the liquid absorbing material 4 disposed in a standing state in the liquid container 3. The lower end portion of the guide holes 20 and 20 provided in the bearing pieces 19 and 19 is positioned below the upper end surface of the liquid absorbing material 4 and has an annular shape. In a state where the diaphragm 5a of the ultrasonic oscillator 5 mounted in the holder 6 is in contact with and supported by the upper end surface of the liquid absorbing material 4, the arm protruding from the annular holder 6 is provided. The lower ends of the pieces 16 and 16 are located slightly above the lower ends of the bearing pieces 19 and 19, and the bosses 17 and 17 projecting from the arm pieces 16 and 16 are vertically long of the guide holes 20 and 20. It is configured to have a structure loosely fitted in the central portion in the vertical direction.

  The lower end surface of the pair of bearing pieces 19 and 19 receives the annular holder 6 on the upper surface when the lid is opened, and prevents the annular holder 6 from being detached downward from the bearing pieces 19 and 19. A receiving plate member 21 is provided. The receiving plate member 21 includes a rectangular central plate piece 21a disposed at a small distance from the arm pieces 16, 16 along the lower surface of the arm pieces 16, 16 of the annular holder 6. The both ends of the central plate piece 21a are integrally provided with a small interval in the length direction of the central plate piece 21a, and project toward the width extending direction of the central plate piece 21a. 21b, 21b; 21c, 21c, and the upper surfaces of these side plate pieces 21b, 21b; 21c, 21c are formed in a horizontally flat surface and projecting ends (tips). ) Are provided with small holes for mounting 26, 26, and these small holes 26 are fitted to the lower ends of the support rods 25, 25 suspended from the lower surface of the lid body 2, so that the above-mentioned annular shape is obtained. The upper surface of both end plate pieces 21b, 21b on the lower side of the projecting ends of the arm pieces 16, 16 in the holder 6 is brought into contact with the lower end surfaces of the bearing pieces 19, 19 to guide holes 2 The receiving plate member 21 is constructed between the lower end surfaces of the bearing pieces 19 and 19 so that the lower ends of the openings 0 and 20 are closed by the side plate pieces 21b and 21b.

  Further, the central plate piece portion 21a of the receiving plate member 21 is gently inclined downward from the distal end side to the proximal end side of the arm pieces 16 and 16 projecting from the upper surface of the annular holder 6. An annular shape that is formed on an inclined surface and rotates downward with the bosses 17 and 17 loosely fitted in the guide holes 20 and 20 provided in the bearing pieces 19 and 19 when the lid 3 is opened. The arm pieces 16 and 16 of the holder 6 are configured to be received by the inclined surfaces.

  Further, in the receiving plate member 21, the central plate piece 21 a has a central portion in the width direction corresponding to below the arm pieces 16, 16 projecting from the annular holder 6 from the distal end toward the proximal end. A wiring hole 27 through which the lead wires 8a and 8b are inserted is provided, and a supporting piece portion 21d is projected outwardly from one side plate piece portion 21c of the both side plate piece portions 21b and 21b; 21c and 21c. In addition, a switch mounting cylinder portion 28 into which the limit switch LS is removably inserted is provided at the distal end portion of the support piece portion 21d.

  The lead wires 8a and 8b connected to the piezoelectric vibrator 5b of the ultrasonic oscillating portion 5 project from the lead wire outlet 18 provided in the wall portion 6b of the annular holder 6 to the annular holder 6. Between the arm pieces 16 and 16 and through the wiring hole portion 27 provided in the central plate piece portion 21a of the receiving plate member 21 below the lead piece member 16 and the lead plate 8a, The limit switch LS mounted on 8b is mounted on the switch mounting cylinder 28 provided on the receiving plate member 21 and the lead wires 8a and 8b are connected to the power source 10 via the oscillation circuit of the circuit board 9. . As described above, since the lower end surfaces of the pair of bearing pieces 19 and 19 are located below the lower end surfaces of the arm pieces 16 and 16 projecting from the annular holder 6, the receiving plate A gap 22 is formed between the upper surface of the member 21 and the lower end surfaces of the arm pieces 16 and 16.

  The lid 2 is pivotally attached to the case body 1 so as to be openable and closable on the outer peripheral surface of the peripheral wall of the case body 1 facing the projecting end side of the arm pieces 16 and 16 projecting from the annular holder 6. 29. On the lower surface of the lid body 2, a cylindrical holder storage chamber 23 surrounding the annular holder 6 is suspended from the periphery of the spray port 7 provided at the center of the lid body 2 downward. The annular holder 6 is stored in the holder storage chamber 23 with a space where the outer peripheral surface of the annular holder 6 does not contact the inner peripheral surface of the holder storage chamber 23. A part of the chamber 23 is cut out over its entire length, and an arm piece outlet 24 is provided for projecting the pair of arm pieces 16, 16 of the annular holder 6 from the holder storage chamber 23 between the bearing pieces 19, 19. Yes.

  According to the ultrasonic spraying device configured as described above, the annular holder 6 to which the ultrasonic oscillator 5 is attached is extended from a part of the annular wall 6b to the diameter of the annular wall 6b. The pair of arm pieces 16, 16 projecting toward the bottom are inserted between a pair of bearing pieces 19, 19 suspended from the lower surface side of the lid 2, and Since the bosses 17 and 17 projecting on the side surfaces are loosely fitted in the vertically long guide holes 20 and 20 provided in the pair of bearing pieces 19 and 19 so as to be movable up and down, the annular holder 6 is arranged in the circumferential direction. The lower surface of the central portion of the diaphragm 5a of the ultrasonic wave oscillating portion 5 mounted in the annular holder 6 is brought into contact with the upper end surface of the liquid absorbing material 4 provided on the liquid container 3 side. The annular holder 6 can be automatically supported so that the vibration plate 5a is in contact with the entire upper end surface of the liquid absorbing material 4 evenly. Varies, adjusted to abut against the upper end face the entire surface of the liquid absorbing material 4 with the vibrating plate 5a by a predetermined pressing force by the weight of the annular holder 6 with the ultrasonic generator 5 can be supported. The pressing force may be adjusted by attaching a weight to the ultrasonic oscillating unit 5 and adjusting the weight with the weight of the ultrasonic oscillating unit 5.

  When the case body 1 is covered with the lid body 2, the diaphragm 5 a of the ultrasonic wave oscillating unit 5 attached to the annular holder 6 is brought into contact with and received by the upper end surface of the class liquid material 4, and the liquid absorbing material 4. The liquid in the liquid container 3 sucked up by the liquid adheres to the lower surface of the diaphragm 5a from the upper end surface of the liquid absorbing material 4, and in this state, the limit switch LS is activated to turn on the power supply from the power source 10 to the oscillation circuit. Then, an AC drive voltage is applied to the piezoelectric vibrator 5b to excite the piezoelectric vibrator 5b, and the diaphragm 5a vibrates integrally with the piezoelectric vibrator 5b. Due to the vibration of the diaphragm 5a, the liquid is guided into the small holes 11 provided innumerably in the diaphragm 5a by capillarity, and the liquid has a squeezing action in the small holes 11 that are tapered toward the upper end. In response to this, fine and uniform particles are ejected from the small holes 11 while being atomized, and sprayed to the outside from the spray port 7 provided at the center of the lid 2 as shown in FIG.

  When the liquid in the liquid container 3 runs out due to long-term use, the lid 2 is removed from the case body 1 and removed by removing the emptied liquid container 3 from the container storage chamber 12 in the case body 1. Then, a new liquid storage container 3 is disposed in the container storage chamber 12. At this time, the liquid storage container 3 is attached with a cap 3c having a vertical cylindrical body 14 supporting the liquid absorbing material 4 at the mouth 3b. An outer cap (not shown) that covers the upper end of the liquid absorbing material 4 protruding upward from the cap 3c together with the cap 3c is screwed into the cap 3c. Is removed and placed in the container storage chamber 12.

Further, when the lid 2 is pivoted upward with respect to the case body 1 with the pivoting portion 29 as a fulcrum, the diaphragm 5a of the ultrasonic oscillator 5 mounted in the annular holder 6 is opened. While away upwardly from the upper end surface of the liquid absorbing material 4, where the annular holder 6 that is fixed to the ultrasonic oscillation section 5, loosely fitted in the guide holes 20, 20 are provided on the shaft receiving piece 19 The arm pieces 16 and 16 are received by the inclined surface by rotating downward with the bosses 17 and 17 as fulcrums, and the annular holder 6 is supported on the receiving plate member 21 without further tilting. In this state, it can be detached from the case body 1 integrally with the lid body 2.

  When the lid 2 is placed on the case body 1 after the liquid container 3 is replaced, the liquid absorbing material 4 in which the center of the lower surface of the diaphragm 5a of the ultrasonic oscillator 5 protrudes from the mouth 3b of the liquid container 3 is used. And the diaphragm 5a is pressed upward, and the arm pieces 16 and 16 projecting from the annular holder 6 are moved upward from the receiving plate member 21 to move to the boss 17, 17 is located in the middle portion of the guide holes 20 and 20 in the longitudinal direction, and as described above, the diaphragm 5a of the ultrasonic oscillator 5 is moved by the weight of the annular holder 6 on which the ultrasonic oscillator 5 is mounted. The liquid absorbing material 4 can be uniformly brought into contact with and supported by the entire upper end surface.

  In this state, even if the annular holder 6 swings during installation of the ultrasonic atomizer during transportation or use, the lower surface of the diaphragm 5a remains on the liquid absorbing material 4 after transportation or after installation. It is possible to automatically return to the state in which the upper end surface is evenly closely and completely received.

  The pair of bearing pieces 19 and 19 provided with the guide holes 20 and 20 have their inner ends integrally connected to a holder storage chamber 23 whose ends are connected to the lower surface of the lid 2. When the holder storage chamber 23 is not provided, or even if it is provided, the upper end surface may be integrally connected to the lower surface of the lid 2 separately from the holder storage chamber 23. What is necessary is just to suspend from the lower surface side of the cover body 2.

  Also, without opening the lower ends of the guide holes 20 and 20 provided in the bearing pieces 19 and 19 downward from the bearing pieces 19 and 19, a vertically long shape reaching the vicinity of the lower ends of the bearing pieces 19 and 19 You may form in a guide hole.

DESCRIPTION OF SYMBOLS 1 Case body 2 Cover body 3 Liquid container 4 Liquid absorbing material 5 Ultrasonic oscillation part
5a Diaphragm
5b Piezoelectric vibrator 6 Toroidal holder 7 Spray port
12 Container storage room
13 Power storage room
14 Vertical cylinder
16, 16 arms
17, 17 Boss
18 Lead wire outlet
19, 19 Bearing piece
20, 20 Guide hole
21 Back plate member

Claims (6)

  A case body, a cover body that is detachably covered with the case body, a spray opening at the center of the case body, a liquid storage container disposed in the case body, and a lower half portion of the liquid storage container being immersed A liquid-absorbing material having an upper end projecting upward from the mouth of the liquid container, a piezoelectric vibrator that vibrates when energized, and a vibration plate are in contact with the upper surface of the liquid-absorbing material. An ultrasonic oscillator that is received, an annular holder that is disposed below the spray port of the lid and fixes the ultrasonic oscillator in an internally fitted state, and an outer peripheral surface of the annular holder An arm piece projecting on the side, a short shaft boss projecting on the side surface at the tip of the arm piece, and a boss of the arm piece suspended from the lower surface side of the lid. A bearing piece having a vertically long guide hole that is freely fitted in a vertically movable manner. Ultrasonic atomizing device according to symptoms.   On the outer peripheral surface of the annular holder, a pair of arm pieces project in parallel with a small interval in the circumferential direction of the annular holder, and on the outer side surface of these arm pieces facing away from each other. While the boss is projected, a pair of bearing pieces are suspended from the lower surface side of the lid member so as to sandwich the arm pieces, and the pair of arm pieces are inserted into the guide holes provided in the bearing pieces. The ultrasonic atomizer according to claim 1, wherein the protruding bosses are loosely fitted so as to be movable in the vertical direction.   The lower end of the guide hole provided in the pair of bearing pieces is opened downward from the lower end surface of the bearing piece, and the receiving plate member is fixed between the lower end surfaces of the bearing pieces in a erected state. The opening end of the guide hole is closed, and the lower end of the bearing piece is positioned below the lower surface of the arm piece of the annular holder in which the boss is loosely fitted in the guide hole of the bearing piece. The ultrasonic atomizer according to claim 1 or 2, wherein a gap is formed between the upper surface of the backing plate member and the lower end surface of the arm piece of the annular holder.   2. A lead wire outlet port for cutting out a peripheral wall portion between a pair of arm pieces in an annular holder and drawing out a lead wire from an ultrasonic wave oscillation portion to the outside of the annular holder. Item 3. The ultrasonic atomizer according to Item 2.   A short cylindrical partition wall is provided at the center of the case body, and the interior surrounded by the partition wall is formed in the storage chamber of the liquid storage container, while protruding from the partition wall and the outer periphery of the case body. The ultrasonic atomizer according to claim 1, wherein a space between the peripheral wall and the surrounding wall is formed in a power storage chamber that supplies electric power to the ultrasonic oscillator.   A container cap is attached to the mouth of the liquid container, and a vertical cylinder is provided at the center of the cap, and a liquid absorbing material is inserted into and supported by the vertical cylinder. The ultrasonic atomizer described.

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