TWI826693B - Electrostatic spray device and box - Google Patents

Abstract

The present invention provides an electrostatic spray device 1, which is an electrostatic spray device 1 that sprays charged liquid. It is provided with: a main body 2, and a box 3 that can attach and detach the installed part 23 of the main body 2; the installed part 23 has a fitting convex part. 24, 25 and insertion holes 27, 28; the mounting part 6 of the box 3 is provided with: fitting recessed parts 67, 68 and protruding pins 66, 631; when the mounting part 6 is mounted on the mounted part 23, the pin 66 The insertion of 631 into the insertion holes 27 and 28 enables the liquid to be charged, and the insertion of the guide pins 66 and 631 into the insertion holes 27 and 28 is achieved by the fitting of the fitting convex portions 24 and 25 with the fitting recessed portions 67 and 68. .

Description

Electrostatic spray device and box

The present invention relates to electrostatic spray devices and cartridges.

Electrostatic spray devices for spraying charged liquid are known. For example, the electrostatic device described in Japanese Patent Publication No. 2007-521941 sprays a liquid composition through electrostatic force. This electrostatic device has a casing that can be attached and detached. The housing system holds the high voltage generator and power supply. The cassette has a giving unit and a container. The imparting unit includes a nozzle and an electrode. The container contains a supply of liquid composition. The single system is designed to be removably mounted on a support formed on the housing. A conductive pin is connected to the electrode, and the pin protrudes from the imparting unit. When the holder is installed on the given unit, the pin is electrically connected to the voltage terminal provided on the side of the housing.

The present invention relates to an electrostatic spray device that sprays charged liquid. It is provided with: a main body and a box that can attach and detach the attached part of the main body; the attached part has a fitting convex part and an insertion hole; The above-mentioned cartridge is provided with: a liquid storage part that stores the above-mentioned liquid; and an installation part installed on the above-mentioned mounted part; the above-mentioned installation part has: a fitting recessed part provided to be fitted with the above-mentioned fitting convex part; and a fitting recessed part provided so as to be inserted. a protrusion to the insertion hole; when the mounting portion is mounted to the mounted portion, the insertion of the protrusion into the insertion hole enables the liquid to be charged, and the fitting protrusion is engaged with the fitting The fitting of the recess guides the insertion of the protrusion into the insertion hole.

Furthermore, the present invention relates to a cartridge for an electrostatic spray device that ejects a charged liquid, and is provided with: a liquid storage portion that stores the liquid; and an mounting portion that is mounted on the mounted portion of the main body of the electrostatic spray device; The above-mentioned mounting part has: a fitting recessed part provided so as to fit into the fitting convex part provided in the above-mentioned part to be installed; and a protrusion provided so as to be inserted into the insertion hole provided in the above-mentioned part to be installed; in the above-mentioned installation part When the part is installed on the mounted part, the liquid can be charged by the insertion of the protrusion into the insertion hole, and the insertion of the protrusion into the insertion hole is guided by the fitting between the fitting protrusion and the fitting recess. hole insertion.

In the above-mentioned electrostatic device described in Japanese Patent Publication No. 2007-521941, if the installation direction of the imparting unit relative to the holder is deviated, the insertion direction of the pin to the housing side will be deviated. Therefore, there is a risk that the pins may be damaged or broken. In addition, there is a risk that the relative position between the pin and the voltage terminal may deviate, and the electrical connection between the pin and the voltage terminal may become incorrect. Not only the pin, but also the protrusion provided on the box side and the protrusion that can charge the liquid by being inserted into the device body side, the above situation may occur. That is, if the installation direction of the box is deviated, there is a risk that the protrusion may deviate from the insertion direction of the main body side. In this way, for the conventional device, it is expected to suppress the deviation of the insertion direction of the protrusion and improve the stability and certainty of the insertion direction.

Therefore, the present invention relates to an electrostatic spray device and a cartridge that can suppress deviation in the insertion direction of protrusions.

In order to solve the above problems, according to a certain aspect of the present invention, there is provided an electrostatic spray device that sprays a charged liquid, and is provided with: a main body, and a box that can attach and detach an attached part of the main body; The fitting convex part and the insertion hole; the box is provided with: a liquid storage part for storing liquid; and a mounting part installed on the mounted part; the mounting part has: a fitting recessed part configured to fit with the above-mentioned fitting convex part; and a protrusion configured to be inserted into the insertion hole; when the mounting part is mounted on the mounted part, the liquid can be charged by the insertion of the protrusion into the insertion hole, and the fitting protrusion and the fitting The fitting of the recess guides the insertion of the protrusion into the insertion hole.

According to another aspect of the present invention, there is provided a cartridge for an electrostatic spray device that sprays a charged liquid, which includes: a liquid storage portion that stores the liquid; and an attachment portion that is attached to an attached portion of the main body of the electrostatic spray device. ; The mounting portion has: a fitting recessed portion configured to fit into a fitting convex portion provided on the mounted portion; and a protrusion configured to be inserted into an insertion hole provided in the mounted portion; When the mounting portion is installed, the insertion of the protrusion into the insertion hole allows the liquid to be charged, and the insertion of the protrusion into the insertion hole is guided by the fitting of the fitting convex portion and the fitting recess.

According to the electrostatic spray device and the cartridge for the electrostatic spray device of the present invention, deviation in the insertion direction of the protrusion to the main body side can be suppressed. This prevents the protrusions from being damaged or broken, and allows the liquid to be charged more reliably.

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In addition, in this specification and the drawings, elements having substantially the same function and configuration are designated by the same reference numerals, and repeated descriptions are omitted.

An electrostatic spray device 1 according to an embodiment of the present invention shown in Fig. 1 adopts the electrostatic spray method. The electrostatic spray method is a method of applying a positive or negative high voltage to a liquid to charge the liquid, and spraying the charged liquid toward an object. The liquid may be a composition containing multiple components. The sprayed liquid system is repeatedly refined and expanded in space through Coulomb repulsion, forming a thin film on the surface of the object. When a liquid containing a volatile substance is used as a solvent for electrostatic spraying, a film can be formed on the surface of the object because the solvent containing the volatile substance dries during the electrostatic spraying process or after it is attached to the object. . The electrostatic spray device 1 can be used, for example, in applications where people use their hands or for personal use of the user, and can spray charged liquid toward an object, such as the user's own or other people's skin or nails. The liquid system contains raw materials for electrospinning, and may be a liquid to which a high voltage is applied, that is, a spinning liquid (liquid composition). That is, the electrostatic spray device 1 may be an electrospinning device that forms a deposit of fibers on the surface of an object using an electrostatic spray method.

When forming a deposit of fibers by electrostatic spraying, the cross-sectional shape of the fibers is preferably circular or elliptical. The thickness of the fiber refers to the diameter when the cross-sectional shape of the fiber is circular, and the length of the major diameter when the cross-sectional shape is elliptical. When the fiber thickness is expressed in terms of a circle equivalent diameter, it is preferably 10 nm or more, more preferably 50 nm or more. Moreover, it is preferably 3000 nm or less, more preferably 1000 nm or less. The thickness of the fiber can be measured, for example, by the following method. That is, the fiber is observed with a scanning electron microscope (SEM) at a magnification of 10,000 times, and defects (such as fiber blocks, fiber intersections, and liquid droplets) are removed from the two-dimensional image. Select 10 fibers randomly from among them, draw a line orthogonal to the length direction of the fiber and read the fiber diameter directly, then the fiber thickness can be measured.

In addition, the length of the fibers forming the coating is infinite in principle, but in practice it is preferable to have a length that is at least 100 times the thickness of the fibers. For example, the coating formed preferably contains fibers with a length of 10 μm or more, more preferably 50 μm or more, and more preferably 100 μm or more.

The liquid (liquid composition) used in the electrostatic spray device 1 will be described in detail below. As the liquid composition, for example, a solution in which a polymer compound having film-forming ability is dissolved in a solvent can be used. As such a polymer compound, either a water-soluble polymer compound or a water-insoluble polymer compound can be used. As the solvent, water, alcohol, and ketone can be used.

The liquid composition used in the present invention contains the following components (a), (b) and (c). The mass ratio (b/c) of component (b) to component (c) is preferably 0.4 or more and 50 the following. (a) One or more volatile substances selected from alcohols and ketones (b) Polymer compounds with film-forming ability (c)Water

In this specification, component (b) is a polymer compound selected from water-soluble polymers and water-insoluble polymers, and is preferably a polymer compound containing water-insoluble polymers. Here, the so-called "water-soluble polymer compound" means that the polymer compound is immersed in water with a mass of 10 times or more relative to the polymer compound under an environment of 1 atmosphere and normal temperature (20°C ± 15°C). A polymer compound that has the property of dissolving in water to the extent that more than 50% by mass of the polymer compound is dissolved after a sufficient period of time (for example, 24 hours or more). On the other hand, the so-called "water-insoluble polymer compound" means that the polymer compound is immersed in water with a mass of 10 times or more relative to the polymer compound under an environment of 1 atmosphere and normal temperature (20°C ± 15°C). , a polymer compound that has the property of being difficult to dissolve in water to the extent that more than 80% by mass of the impregnated polymer compound does not dissolve when a sufficient period of time (for example, 24 hours or more) has elapsed.

Examples of water-soluble polymer compounds include mucopolysaccharides such as polytridextrose, hyaluronic acid, chondroitin sulfate, poly-γ-glutamic acid, modified corn starch, β-glucan, glucose oligosaccharide, heparin, and keratin sulfate. , cellulose, pectin, xylan, lignin, glucomannan, galacturonic acid, psyllium seed gum, tamarind seed gum, arabic gum, tragacanth gum, modified corn starch, soybean water-soluble Polysaccharides, alginic acid, carageenan, laminarin, agar (agarose), fucoidan, methylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose and other natural polymers, partially saponified polyvinyl alcohol (When not used together with a cross-linking agent), synthetic polymers such as low-saponification polyvinyl alcohol, polyvinylpyrrolidone (PVP), polyethylene oxide, sodium polyacrylate, etc. These water-soluble polymer compounds can be used alone or in combination of two or more types. Among these water-soluble polymer compounds, from the viewpoint of easy formation of a film, polytridextrose, partially saponified polyvinyl alcohol, low saponified polyvinyl alcohol, polyvinylpyrrolidone and polyepoxy are preferably used. Synthetic polymers such as ethane.

On the other hand, examples of water-insoluble polymer compounds include fully saponified polyvinyl alcohol that can be insolubilized after the film or fiber is formed, and polyvinyl alcohol that can be cross-linked after the fiber is formed by using it together with a cross-linking agent. Partially saponified polyvinyl alcohol, poly(N-propylethyleneimine) graft-dimethylsiloxane/γ-aminopropylmethylsiloxane copolymer, etc., oxazoline modified polysiloxane Oxygen, zein (the main component of corn protein), polyester, polylactic acid (PLA), polyacrylonitrile resin, polymethacrylic acid resin and other acrylic resins, polystyrene resin, polyvinyl butyral resin, polyvinylidene resin Ethylene phthalate resin, polybutylene terephthalate resin, polyurethane resin, polyamide resin, polyimide resin, polyamide imide resin, etc. These water-insoluble polymer compounds can be used individually or in combination of 2 or more types. The component (b) of the present invention is preferably a water-insoluble polymer compound from the viewpoint of being dissolved or dispersed in the component (a) and forming fibers on the skin, nails, etc., and the liquid composition contains a spinning liquid. function. Among these water-insoluble polymers, it is preferable to use a fully saponified polyvinyl alcohol that can be subjected to an insolubilization treatment after the film is formed, and a partially saponified polyvinyl alcohol that can be cross-linked after the fiber is formed by using it together with a cross-linking agent. Acrylic resins such as polyvinyl alcohol, polyvinyl butyral resin, polymethacrylic resin, polyvinyl acetal diethyl amino acetate, poly(N-propyl ethylenimine) graft-di Methylsiloxane/γ-aminopropylmethylsiloxane copolymer, etc., one of oxazoline modified polysiloxane, polylactic acid (PLA), zein, polyurethane resin, or 2 or more types. Component (b) is preferably a water-insoluble polymer compound from the viewpoint of being dissolved or dispersed in component (a) and forming fibers on skin, nails, etc., and the liquid composition has the function of a spinning fluid. The term "component (b)" is dissolved or dispersed means that its dispersed state is uniform under visual inspection, and preferably is transparent or translucent under visual inspection.

The volatile substance of component (a) is a substance that is volatile in a liquid state. Among the liquid compositions, component (a) is formulated for the following purpose: after the liquid composition placed in an electric field is fully charged, it is discharged from the tip of the nozzle toward an object such as skin, and along with component (a) As it gradually evaporates, the charge density of the liquid composition becomes excessive and becomes more refined due to Coulomb repulsion. At the same time, component (a) further evaporates, and finally a coating containing dried fibers is formed. For this purpose, the vapor pressure of the volatile substance is preferably 0.01 kPa or more and 106.66 kPa or less at 20°C, more preferably 0.13 kPa or more and 66.66 kPa or less, still more preferably 0.67 kPa or more and 40.00 kPa or less, still more preferably 1.33kPa or more and 40.00kPa or less.

Among the volatile substances of component (a), as the alcohol, for example, chain aliphatic alcohols of units, cycloaliphatic alcohols of units, and aromatic alcohols of units can be suitably used. Examples of chain aliphatic alcohols as units include C1 to C6 alcohols; examples of cyclic alcohols as units include C4 to C6 cyclic alcohols; examples of aromatic alcohols as units include benzyl alcohol and phenylethanol. Alcohol, etc. Specific examples of these include ethanol, isopropyl alcohol, butanol, phenylethyl alcohol, n-propanol, n-pentyl alcohol, and the like. One or more types selected from these alcohols can be used.

Among the volatile substances of component (a), examples of ketones include C1 to C4 alkyl ketones, such as acetone, methyl ethyl ketone, methyl isobutyl ketone, and the like. One type of these ketones may be used alone, or two or more types may be used in combination.

Among the volatile substances of component (a), one or more types are more preferably selected from the group consisting of ethanol, isopropyl alcohol and butanol, more preferably one or more types are selected from the group consisting of ethanol and butanol, and further more preferably More preferably, ethanol is used.

The content of component (a) in the liquid composition is preferably 50 mass% or more, more preferably 55 mass% or more, still more preferably 60 mass% or more, still more preferably 65 mass% or more. Moreover, the content is preferably 95 mass% or less, more preferably 92 mass% or less, still more preferably 90 mass% or less, and still more preferably 88 mass% or less. The content of component (a) in the liquid composition is preferably 50 mass% or more and 95 mass% or less, more preferably 55 mass% or more and 92 mass% or less, and still more preferably 60 mass% or more and 90 mass% or less. , more preferably 65 mass% or more and 88 mass% or less. By containing the component (a) in the liquid composition in this ratio, the component (a) in the liquid composition can be fully volatilized during the electrostatic spraying method, and a layer containing the component (a) can be formed on the surface of objects such as skin. b) The coating is the main component of fiber.

From the viewpoint of fiber-forming properties, the polymer compound of component (b) is preferably a water-insoluble polymer and a substance soluble in the volatile substance of component (a). Here, the term "dissolved" refers to a dispersed state at 20° C., and the dispersed state is a uniform state visually, and preferably a transparent or translucent state visually.

As a water-insoluble polymer, one appropriate to the nature of the volatile substance of component (a) is used. Specifically, it is a polymer which is soluble in component (a) and preferably insoluble in water. In this specification, the so-called "water-soluble polymer" refers to the density of the impregnated polymer after weighing 1g of the polymer and immersing it in 10g of deionized water for 24 hours under an environment of 1 atmosphere and 23°C. More than 0.5g can be dissolved in water. On the other hand, in this specification, the so-called "water-insoluble polymer" means that after weighing 1g of the polymer in an environment of 1 atmosphere and 23°C, it is immersed in 10g of deionized water. After 24 hours, it has the properties of the immersed polymer. The polymer has the property of being insoluble in 0.5g or more of it, in other words, the polymer has the property of dissolving less than 0.5g.

The content of component (b) in the liquid composition is preferably 4 mass% or more, more preferably 6 mass% or more, and more preferably 8 mass% or more from the viewpoint of film formation. Moreover, from the viewpoint of electrostatic sprayability, the content of component (b) is preferably 40 mass% or less, more preferably 35 mass% or less, and still more preferably 30 mass% or less. The content of component (b) in the liquid composition is preferably from 4 mass% to 35 mass%, more preferably from 6 mass% to 30 mass%, and more preferably from 8 mass% to 25 mass%. When forming a film of fiber accumulation, by containing component (b) in the liquid composition in this ratio, the film of fiber accumulation can be formed stably and efficiently.

Compared with non-ionized solvents such as ethanol, water in component (c) is ionized and becomes charged, so it can impart conductivity to the liquid composition. Therefore, electrostatic spraying is used to stably form a fibrous coating on the surface of objects such as skin. In addition, the water system helps to improve the tightness and durability of the coating formed by electrostatic spray on the object. From the viewpoint of obtaining these effects, component (c) is preferably contained in the liquid composition in an amount of 0.2% by mass or more and 25% by mass or less. The content of component (c) in the liquid composition is preferably 0.3% by mass or more, more preferably 0.35% by mass or more, and still more preferably 0.4% by mass or more. Moreover, the content of component (c) in the liquid composition is preferably 20 mass% or less, more preferably 19 mass% or less, and still more preferably 18 mass% or less. The content of component (c) in the liquid composition is 0.2 mass% or more and 25 mass% or less, more preferably 0.3 mass% or more and 20 mass% or less, more preferably 0.35 mass% or more and 19 mass% or less, and more preferably Preferably, it is 0.4 mass% or more and 18 mass% or less.

Furthermore, from the viewpoint of film formation properties on the surface of an object such as skin, the formability of a fibrous film when fibers are formed, and the improvement of the adhesion of the film to the object, the film improvement From the viewpoint of durability, the mass ratio (b/c) of component (b) and component (c) is preferably 0.4 or more and 50 or less. This mass ratio (b/c) is preferably 0.5 or more, more preferably 0.6 or more. Moreover, the mass ratio (b/c) is preferably 45 or less, more preferably 40 or less. The range of the mass ratio (b/c) is preferably from 0.4 to 50, more preferably from 0.5 to 45, still more preferably from 0.55 to 40, still more preferably from 0.6 to 40.

In addition, from the viewpoint of forming a film on the surface of an object such as skin, electrostatically spraying a liquid composition directly onto the object to stably obtain a fibrous film, and improving the tightness of the resulting film From the viewpoint of improving the durability of the coating, the mass ratio (a/c) of component (a) and component (c) is preferably 3 or more and 300 or less. The mass ratio (a/c) is more preferably 3.5 or more, and more preferably 4 or more. The mass ratio (a/c) is preferably 250 or less, and more preferably 210 or less. The range of the mass ratio (a/c) is more preferably from 3.5 to 250, and more preferably from 4 to 210.

From the viewpoint of the dispersibility of component (b) in the liquid composition, film formation properties, and film durability, the mass ratio (b/a) of component (b) to component (a) is preferable. It is 0.01 or more, preferably 0.02 or more, further preferably 0.04 or more, and further preferably 0.07 or more. The mass ratio (b/a) is preferably 0.55 or less, more preferably 0.50 or less, still more preferably 0.30 or less, still more preferably 0.25 or less.

The liquid composition may contain only the above-mentioned components (a) to (c), or may contain other components in addition to the components (a) to (c). Examples of other components include polyol, liquid oil, plasticizer of the polymer of component (b), conductivity control agent in the liquid composition, water-soluble polymers other than component (b), color pigments, Powders such as body pigments, dyes, fragrances, repellents, antioxidants, stabilizers, preservatives, various vitamins, etc. When the liquid composition contains other components, the content ratio of the other components is preferably 0.1 mass% or more and 30 mass% or less, more preferably 0.5 mass% or more and 20 mass% or less.

The liquid composition may also contain powders such as coloring pigments and extender pigments. From the viewpoint of uniform coating formation, coating durability or tight viscosity, the particle size is 0.1 μm or more at 20°C. The content of the powder is preferably 1% by mass or less, more preferably 0.1% by mass or less, still more preferably 0.01% by mass or less, and preferably does not contain powder except when it is inevitably mixed.

The viscosity of the liquid composition is determined by the ease of electrostatic spraying, the viewpoint of stably forming a fibrous coating, the viewpoint of spinnability during electrostatic spraying, the viewpoint of improving the durability of the coating, and the viewpoint of improving the feel of the coating Generally speaking, the preferred system is 2~3000mPa‧s at 25℃. The viscosity is preferably 10 mPa‧s or more, more preferably 20 mPa‧s or more, and still more preferably 30 mPa‧s or more. Moreover, the viscosity is preferably 1500 mPa‧s or less, more preferably 1000 mPa‧s or less, still more preferably 800 mPa‧s or less. The range of viscosity is preferably 2mPa‧s or more and 3000mPa‧s or less, more preferably 20mPa‧s or more and 1500mPa‧s or less, still more preferably 30mPa‧s or more and 1000mPa‧s or less, still more preferably 30mPa‧s Above and below 800mPa‧s. The viscosity of the liquid composition is measured using an E-type viscometer at 25°C. As the E-type viscometer, for example, an E-type viscometer (VISCONIC EMD) manufactured by Tokyo Keiki Co., Ltd. can be used. The measurement conditions at this time are 25℃, cone plate rotor No. 43, the rotation number is selected according to the viscosity, the viscosity above 1300mPa‧s is set to 5rpm, the viscosity above 250mPa‧s and less than 1300mPa‧s is set to 10rpm, the viscosity above 25mPa‧s but less than 250mPa‧s is set to 50rpm, and the viscosity less than 25mPa‧s is set to 100rpm.

Next, the schematic structure of the electrostatic spray device 1 of this embodiment will be described with reference to FIGS. 1 to 6 . For convenience of explanation, a three-dimensional orthogonal coordinate system is set in each figure. FIG. 1 is a side view of the electrostatic spray device 1 viewed from the positive x-axis direction. The electrostatic spray device 1 is, for example, a handheld type, and has a shape, size and weight that can be held and used by a user with one hand. The electrostatic spray device 1 (hereinafter simply referred to as the device 1) includes a main body 2 and a cartridge 3 (see Fig. 3). The box 3 can be freely removed from the body 2 and contains the sprayed liquid.

The main body 2 has a housing 20, a guard 21 and an actuating part 5 (see Fig. 2). The casing 20 accommodates the actuator 5 . The housing 20 has a holding part 20A and a main receiving part 20B. The grip portion 20A is cylindrical and has a size and shape that is easy for the user to hold with his hand. The main accommodating part 20B has a flat cylindrical shape and extends in the z-axis direction belonging to the axial direction of the nozzle 61 . In addition, the shapes of the holding part 20A and the main receiving part 20B are not limited to the shapes of FIG. 1 . As a material constituting the housing 20, resin which is an insulating material can be used. The material constituting the casing 20 preferably contains an antistatic agent, or the outer surface of the casing 20 is preferably painted. On the other hand, when the user holds the device 1 , the outer surface of the housing 20 preferably has an area formed of a conductive material at the position where the user's hand contacts it. A conductive material may also be used on a part of the holding part 20A, such as the surface. This is because the unnecessary charge of the device 1 can be discharged to the user holding the holding part 20A, that is, it is used for grounding. The following power switch 52 that is touched by the user's fingers when the device 1 is in use is preferably made of conductive material. Examples of the conductive material include, in addition to metal, a mixed material of metal and resin.

As shown in FIG. 2 , the actuating part 5 has a battery 51 and a power switch 52 housed in the holding part 20A, an interlock switch 53 housed in the main housing part 20B, a motor controller 54 , a motor 55 and a high voltage generator 56 . The battery 51 functions as a power source for the device 1 and supplies power to the motor 55 and the high voltage generator 56 . The motor controller 54 is a control device for the motor 55. It receives a DC voltage supply from the battery 51 and supplies power to the motor 55, while controlling its rotational speed.

The motor 55 is an electric motor for driving the pump 62 on the cartridge 3 side, and has the function of an electric actuator of the actuating part 5 . The output shaft of the motor 55 is connected to the drive shaft through a reduction gear. Secure the joint to this drive shaft. A joint 627 is also fixed to the drive shaft 623 of the pump 62 . These joints are detachably connected to each other. Thereby, the drive shaft on the body 2 side and the drive shaft 623 of the pump 62 are detachably connected. The output of the motor 55 is reduced by a reduction gear and transmitted to the drive shaft on the body 2 side, thereby driving the pump 62 .

The high voltage generator 56 includes, for example, an oscillator and a transformer. On the output side of the high voltage generator 56, a terminal 57 is electrically connected. The terminal 57 has a shape and function such as a spring, and is detachably connected to the second pin 631 on the box 3 side. The high voltage generator 56 receives a DC voltage supply from the battery 51 and generates a high voltage, which is supplied to the second pin 631 on the box 3 side via the terminal 57 .

The power switch 52 and the interlock switch 53 are arranged in series between the battery 51 , the motor controller 54 and the high voltage generator 56 . The power switch 52 switches whether the motor 55 and the high voltage generator 56 are powered by the battery 51 . The interlock switch 53 switches whether the motor 55 and the high voltage generator 56 are powered by the battery 51 . The two switches 52 and 53 are, for example, normally open type and have a movable joint and a fixed joint. Move to close the switch by pressing the movable joint. That is, it becomes ON. When the interlock switch 53 is turned on, the power switch 52 is turned on, and the battery 51 supplies power to the motor 55 and the high voltage generator 56 . When the interlock switch 53 is closed and its contact is open, even if the power switch 52 is open, the battery 51 still does not supply power to the motor 55 and the high voltage generator 56 .

As shown in FIG. 3 , the cartridge 3 includes an attachment portion 6 and a liquid storage portion 4 . The mounting part 6 includes a housing 60 , a nozzle 61 , a pump 62 and an electrode 63 . In each figure, the direction in which the liquid is ejected from the nozzle 61, in other words, the direction in which the axis of the nozzle 61 extends is defined as the z-axis, and the side in which the liquid advances is regarded as positive. Set the x-axis and y-axis in the plane orthogonal to the z-axis.

The casing 60 is made of, for example, an insulating synthetic resin. The housing 60 houses the pump 62 and the electrode 63 . The outer shape of the housing 60 is plate-shaped, and the surfaces on both sides in the z-axis direction are wider than the other surfaces. The housing 60 is integrally formed with a nozzle 61 . The nozzle 61 protrudes relative to the surface of the housing 60 on the positive z-axis direction side. In addition, the nozzle 61 may be formed as a separate member from the casing 60 and then fixed to the casing 60 . Inside the nozzle 61, there is a cylindrical passage portion extending in the z-axis direction. The z-axis positive direction end of the passage portion is connected to the opening 610 of the nozzle 61 . The connection portion 64 is integrally formed with the housing 60 using the same material as the housing 60 . The connecting portion 64 protrudes relative to the surface 600 on the negative z-axis direction side of the housing 60 (see FIG. 7 ). The liquid containing part 4 can be connected to the connecting part 64 .

The liquid storage part 4 has a container 40 and a connection part 41. The container 40 is in the shape of a flat bag made of a sheet material such as a thin film and can be freely deformed. The container 40 is formed of, for example, an insulator. At the mouth of the container 40, the connecting portion 41 is fixed. The connection part 41 has a socket 410, a check valve 411, and a locked part 412. The socket 410 is made of synthetic resin such as an insulator. The check valve 411 prevents liquid from flowing back from the socket 410 to the inside of the container 40 . The locked portion 412 is integrally formed with the socket 410 and extends toward both sides of the socket 410 in the y-axis direction.

As shown in Figures 4 to 6, the outer surface of the housing 20 of the body 2 has a mounting surface 200. The mounting surface 200 is a portion of the outer surface of the main receiving portion 20B of the housing 20 that extends in a direction substantially perpendicular to the axis of the nozzle 61, and is the surface on which the cartridge 3 is mounted. When the box 3 is installed on the body 2, the protective member 21 is detachably installed on the housing 20 in a manner that covers the installed surface 200. In the state shown in FIG. 1 , the mounting portion 6 of the box 3 is held between the protective member 21 and the housing 20 . The nozzle 61 protrudes from the hole provided in the protective member 21 . The mounting portion 6 can be pressed toward the housing 20 of the main body 2 through the surrounding portion of the hole of the protective member 21 .

As shown in FIG. 5 , when viewed from the opening 610 of the nozzle 61 for ejecting liquid, the mounting surface 200 of the main receiving portion 20B of the housing 20 has an elongated shape as if an elliptical circle is stretched in the long axis direction. The short axis of the above-mentioned eccentric circle extends toward the x-axis direction, and the long axis extends toward the y-axis direction.

The main receiving part 20B of the housing 20 has an installed part 23 and a container receiving part 260. The mounted portion 23 is a recess for accommodating the mounting portion 6 of the box 3 . The container accommodating part 260 is a space for accommodating the container 40 of the liquid accommodating part 4 of the cassette 3 . On the mounting surface 200, the mounting portion 23 and the container receiving portion 260 have openings. The container receiving portion 260 and its opening 26 extend in the y-axis direction along the surface of the housing 20 on the positive x-axis direction side. The container 40 is inserted into the container receiving portion 260 through the opening 26 .

The details of the mounted portion 23 will be described below. The mounted portion 23 is a support on which the mounting portion 6 of the box 3 is mounted. When the cartridge 3 is installed on the housing 20 of the main body 2 , the mounting part 6 is held by the mounted part 23 . The mounted portion 23 is located at or near the center of the mounted surface 200 in the y-axis direction, and has a concave shape relative to the mounted surface 200 . The mounted portion 23 has a bottom surface 230 and wall surfaces 231 and 232 . The bottom surface 230 is parallel to the xy plane. The wall surfaces 231 and 232 extend in the z-axis direction. The two wall surfaces 231 and 232 are opposite to each other in the y-axis direction, and hold the bottom surface 230 in the y-axis direction. The wall surface 231 on the Y-axis positive direction side has: a portion 231A that extends linearly toward the x-axis direction; and an arc-shaped portion 231B in the xy plane. The arc-shaped portion 231B is connected to the end of the mounting surface 200 on the negative x-axis direction side via a surface 231C extending in the x-axis direction and the z-axis direction. The wall surface 232 on the negative y-axis direction side also has the same structure as the wall surface 231.

The mounted portion 23 is a fitting convex portion protruding in the positive z-axis direction with respect to the bottom surface 230, and has a first convex portion 24 and a second convex portion 25. The first convex portion 24 is located on the positive x-axis direction side and the negative y-axis direction side of the mounted portion 23 and has a rod shape. The first convex part 24 has: two side surfaces 241 and 242 located on both sides of the y-axis direction and parallel to the xz plane; a top surface 243 parallel to the xy plane; and a side surface 244 located on the negative side of the x-axis direction and parallel to the yz plane. ; and a semi-cylindrical side surface 245 located on the positive side of the x-axis and extending toward the z-axis direction.

The second convex portion 25 is connected to the arc-shaped portion 232B of the wall surface 232 on the negative y-axis direction side. The second convex portion 25 is formed by connecting the wall portion 25A parallel to the xz plane and the wall portion 25B parallel to the xy plane. The space surrounded by the two wall surfaces 25A, 25B and the bottom surface 230 faces the positive direction of the x-axis. Side opening. The height of the second protrusion 25 relative to the bottom surface 230 (dimension in the z-axis direction) is greater than the height of the first protrusion 24 relative to the bottom surface 230 (dimension in the z-axis direction).

The mounted portion 23 has a plurality of recessed portions that are concave relative to the bottom surface 230 , specifically, a plurality of holes opened in the bottom surface 230 . In this embodiment, there are a first hole 27 , a second hole 28 , and a third hole. 29. The first hole 27 is located on the positive x-axis direction side and the positive y-axis direction end of the mounted portion 23, and has a long hole shape extending in the y-axis direction. In the xy plane, a movable joint of the interlock switch 53 is provided at a position that overlaps the first hole 27 and is adjacent to the z-axis negative direction side of the first hole 27 . The second hole 28 is located at or near the center of the mounted portion 23 in the y-axis direction and at the side end in the positive x-axis direction, and has a semicircular shape that is continuous with the opening 26 of the container receiving portion 260 . In the xy plane, the terminal 57 is provided at a position that overlaps the second hole 28 and is on the negative z-axis direction side of the second hole 28 . The third hole 29 is adjacent to the negative side of the x-axis direction of the first hole 27 and is located at the end of the y-axis square side of the mounted part 23. It is circular in shape and overlaps with the center of the mounted part 23 in the x-axis direction. .

Next, with reference to FIGS. 7 to 9 , details of the housing 60 in the mounting portion 6 of the box 3 will be described. The thickness of the housing 60 (dimension in the z-axis direction) is the same as or slightly larger than the depth (dimension in the z-axis direction) of the mounted portion 23 . The outer peripheral surface of the housing 60, that is, the surface that expands in the peripheral direction of the axis of the nozzle 61, extends in the z-axis direction. The outer peripheral surface is located on both sides of the y-axis direction, and has planar portions 601 and 602 that extend linearly in the x-axis direction, and has an arc-shaped portion 603 in the xy plane on the positive side of the x-axis. The negative x-axis direction side has an arc-shaped portion 604 in the xy-plane and a planar portion 605 extending linearly in the y-axis direction.

The basic shape of the negative side of the x-axis direction of the housing 60 is, as shown in FIG. 9 , an arc shape when viewed in the xy plane, in other words, from the z-axis direction. The specific shape is in the above-mentioned arc-shaped part, so that the end 608 on the positive z-axis direction side remains in a plate shape, and a part on the negative z-axis direction side is cut off along the chord of the above-mentioned arc, so that the end portion 608 on the negative z-axis direction side The other parts are cut off at right angles. Among the above-mentioned remaining plate-shaped end portions 608, the portion that is continuous with the portion 605 of the outer peripheral surface is eaves-shaped and protrudes toward the negative x-axis direction side of the housing 60.

The surface 600 on the negative z-axis direction side of the housing 60 is parallel to the xy plane. When the box 3 is installed on the body 2, the surface 600 is opposite to the bottom surface 230 of the mounted portion 23 of the body 2, and functions as an installation surface for mounting the body 2. The housing 60 has a connecting portion 64, a rib 643, and a cylindrical portion 65 as a protrusion protruding in the negative direction of the z-axis relative to the mounting surface 600; and has a first pin 66 as a projection protruding in the negative direction of the z-axis relative to the mounting surface 600. Protruding protrusions in the direction.

The connection part 64 has a base part 640, a plug 641 and a locking part 642. The base 640 extends along the outer edge of the mounting surface 600 in the positive x-axis direction. The plug 641 is cylindrical and protrudes in the negative z-axis direction relative to the base 640 . The plug 641 can be inserted into the socket 410 of the liquid receiving part 4 . The socket 410 is removably engaged with the plug 641 . The locking parts 642 are provided at both ends of the base 640 in the y-axis direction and have claws. When the plug 641 is inserted into the socket 410, the claws of the locking portion 642 are locked on the locked portion 412, thereby preventing the plug 641 from falling off the socket 410. In this way, the liquid containing portion 4 connected to the mounting portion 6 is located on the outer edge side of the mounting surface 600 in the positive x-axis direction.

The rib 643 is formed in the base 640 from the portion overlapping the plug 641 in the y-axis direction, and extends in the negative x-axis direction along the mounting surface 600, and is connected to the positive z-axis direction side of the second pin 631 and the positive x-axis direction side. The outer circumference is connected. The connecting portion 64 and the rib 643 can be fitted to the center of the opening 26 of the container receiving portion 260 of the body 2 in the y-axis direction or near it.

The cylindrical portion 65 is located at the end of the mounting surface 600 in the positive y-axis direction, has a cylindrical shape, and overlaps with the center O of the mounting surface 600 in the x-axis direction (see FIG. 9 ). The inner side of the cylindrical portion 65 opens toward the inside of the housing 60 and is connected to the inside of the housing 60 .

The first pin 66 is plate-shaped and parallel to the yz plane, with rounded corners. The first pin 66 is integrated with the housing 60 and is made of the same material as the housing 60 . The first pin 66 is adjacent to the positive x-axis direction side of the cylindrical portion 65 and is located on the positive x-axis direction side and the positive y-axis direction end of the mounting surface 600 . The first pin 66 is configured to be inserted into the first hole 27 of the mounted portion 23 of the body 2 . The first hole 27 has the function of an insertion hole. In addition, the first pin 66 may also be cylindrical, or may be made of other materials different from the housing 60 .

The housing 60 has a first recessed portion 67 and a second recessed portion 68, which are formed as fitting recessed portions recessed in the positive direction of the z-axis relative to the mounting surface 600. The first recess 67 is located on the positive x-axis direction side and the negative y-axis direction side of the mounting surface 600 and has an elongated bathtub shape. The first recess 67 has: two side surfaces 671 and 672 located on both sides in the y-axis direction and parallel to the xz plane; a bottom surface 673 parallel to the xy plane; a side surface 674 located on the negative side of the x-axis direction and parallel to the yz plane; and On the positive side of the x-axis, the semi-cylindrical side 675 extends towards the z-axis direction.

The second recessed portion 68 is located on the negative x-axis direction side and the negative y-axis direction end of the mounting surface 600, and has a shape in which a corner portion of the mounting surface 600 is cut into an L shape. The second recess 68 is formed by connecting the side 681 parallel to the xz plane, the side 682 parallel to the yz plane, and the bottom surface 683 parallel to the xy plane. It is not only an opening relative to the mounting surface 600, but also an opening to the housing 60. The outer peripheral surface is also open. The depth (z-axis direction dimension) of the second recessed portion 68 relative to the mounting surface 600 is greater than the depth (z-axis direction dimension) of the first recessed portion 67 relative to the mounting surface 600.

The housing 60 has a first part 60A and a second part 60B. As shown in FIGS. 10 and 11 , the first part 60A has a bottomed cylindrical shape and has: a plate-shaped part 606 integrated with the nozzle 61 ; a wall part 607 surrounding the outer edge of the plate-shaped part 606 ; and a plate-shaped part 606 The surface on the negative side of the z-axis is the bottom surface, and the receiving recess 609 is surrounded by the inner peripheral surface of the wall portion 607 . The storage recess 609 opens toward the negative z-axis direction side. The end of the passage portion of the nozzle 61 in the negative z-axis direction is connected to the bottom opening of the receiving recess 609 . The second part 60B is plate-shaped and covers the opening of the receiving recess 609 of the first part 60A. The outer periphery of the second part 60B has a shape consistent with the outer periphery of the wall part 607 of the first part 60A. The surface 600 on the negative z-axis direction side of the second part 60B forms part of the outer surface of the housing 60 and functions as a mounting surface.

Next, the internal structure of the housing 60 in the mounting part 6 will be described. As shown in FIG. 10 , the electrode 63 includes a first conductor 63A and a second conductor 63B. The first and second conductors 63A and 63B are made of conductive material. The conductive material is made of, for example, metal or conductive resin. Conductive resin includes, for example, synthetic resin and carbon black. The first and second conductors 63A and 63B are disposed inside the receiving recess 609 of the first portion 60A and biased toward the positive y-axis direction.

As shown in FIG. 11 , the first conductor 63A has a bottomed cylindrical shape and has: a plate-shaped bottom 633 extending along the xy plane; a wall 634 protruding in the negative direction of the z-axis relative to the bottom 633; 633, the electrode part protruding toward the positive direction of the z-axis. The electrode part (not shown) is inserted into the passage part of the nozzle 61.

A plurality of components constituting the pump 62 , that is, the passage member 620 , the drive shaft 623 , the drive gear 624 , and the driven gear are provided in a recessed portion surrounded by the surface on the negative side of the z-axis direction of the bottom 633 and the inner peripheral surface of the wall portion 634 . 625 and driven shaft 626. The two gears 624 and 625 are external gears and mesh with each other. That is, the pump 62 is an external gear pump. Furthermore, the pump 62 may be an internal gear pump. The driving gear 624 and the joint 627 are fixed to the driving shaft 623, and the driven gear 625 is fixed to the driven shaft 626. The positive z-axis ends of the two axes 623 and 626 are rotatably supported on the bottom 633 . As shown in FIGS. 7 to 9 , the drive shaft 623 and the joint 627 serve as components for driving the pump 62 and are provided inside the cylindrical portion 65 of the second portion 60B. The tubular portion 65 surrounds the joint 627 . A part of the joint 627 protrudes toward the negative z-axis direction side with respect to the cylindrical portion 65 .

As shown in FIG. 11 , the passage member 620 has a suction passage part 621 and a discharge passage part 622. The suction passage portion 621 extends in the positive y-axis direction from or near the center in the y-axis direction of the end of the mounting portion 6 on the positive x-axis direction side, and is connected to the meshing portions of the gears 624 and 625 . The discharge passage portion 622 has a hole 622A. The hole 622A is connected to the passage portion of the nozzle 61 . The discharge passage portion 622 extends from the meshing portion of the gears 624 and 625 toward the negative y-axis direction and is connected to the hole 622A. The two gears 624 and 625 are located on the positive y-axis direction side with respect to the hole 622A.

As shown in FIG. 10 , the second conductor 63B is provided in the first conductor 63A. The second conductor 63B has a plate shape extending along the xy plane. The pump 62 is accommodated in the space surrounded by the first conductor 63A and the second conductor 63B. The drive shaft 623 of the pump 62 penetrates the hole 635 provided in the second conductor 63B and protrudes toward the negative z-axis direction side with respect to the second conductor 63B. The z-axis negative direction end of the driven shaft 626 of the pump 62 is rotatably supported on the second conductor 63B.

The second pin 631 and the conductive tube 632 are integrally formed with the second conductor 63B and are made of the same conductive material as the second conductor 63B. The second pin 631 and the conductive tube 632 protrude in the positive z-axis direction with respect to the surface of the second conductor 63B on the positive z-axis direction side.

As shown in FIGS. 7 to 9 , the second pin 631 protrudes toward the z-axis negative direction side of the housing 60 and penetrates the hole 600A provided in the second portion 60B. The second pin 631 is a cylindrical protrusion protruding in the negative z-axis direction relative to the mounting surface 600 of the housing 60, and is located at or near the center of the mounting surface 600 in the y-axis direction and on the positive x-axis direction side. The z-axis positive end of the second pin 631 is connected to the second conductor 63B inside the housing 60 . The second pin 631 is configured to be inserted into the second hole 28 of the mounted portion 23 of the body 2 . The second hole 28 functions as an insertion hole.

The conductive tube 632 is cylindrical and is fitted into the connecting portion 64 of the housing 60 to the inner periphery of the plug 641 . The conductive tube 632 protrudes toward the negative z-axis direction relative to the end of the plug 641 in the negative z-axis direction. The z-axis negative end of the conductive tube 632 is inserted into the inside of the container 40 of the liquid containing part 4 . The z-axis positive end of the conductive tube 632 is connected to the second conductor 63B inside the housing 60 . The inside of the conductive tube 632 functions as a passage portion for liquid circulation. The internal passage of the conductive tube 632 is connected to the inside of the container 40 via the check valve 411, opens on the surface of the second conductor 63B in the positive z-axis direction, and is connected to the suction passage portion 621.

Next, the installation of the box 3 on the body 2 will be described. When the cartridge 3 is installed on the body 2, the liquid containing part 4 of the cartridge 3 is received in the container containing part 260 of the housing 20 of the body 2. The mounting portion 6 of the box 3 is mounted on the mounted portion 23 of the housing 20 of the main body 2 . The portions 602 and 601 on both sides of the outer peripheral surface of the mounting portion 6 in the y-axis direction are respectively opposite to the portions 231A and 232A of the wall surfaces 231 and 232 of the mounted portion 23 . On the other hand, a gap is formed between the eave-shaped end 608 of the mounting portion 6 and the bottom surface 230 of the mounted portion 23 , and this gap is open toward the negative x-axis direction side of the device 1 . Through this gap, the user can engage and pull out the end portion 608 with fingers when assembling and dismounting the mounting portion 6, thereby simplifying the assembly and disassembly.

The first pin 66 is inserted into the first hole 27 of the mounted part 23 . When the first pin 66 is inserted into the first hole 27, it will contact and press the movable joint of the interlock switch 53 on the body 2 side. Thereby, the interlock switch 53 is turned on, and the battery 51 can supply power to the high voltage generator 56 and the motor 55 . The second pin 631 is inserted into the second hole 28 of the mounted part 23 . When the second pin 631 is inserted into the second hole 28, the terminal 57 in contact with the output side of the high voltage generator 56 in the body 2 is electrically connected to the output side of the high voltage generator 56. Thereby, the high voltage generator 56 can energize the second conductor 63B. Since the terminal 57 is disposed on the negative side of the z-axis relative to the second hole 28 , that is, disposed inside the body 2 relative to the bottom surface 230 of the mounted portion 23 , the terminal 57 can be prevented from accidentally coming into contact with the human body. The cylindrical part 65 is inserted into the third hole 29 of the mounted part 23 . Thereby, the joint 627 is connected to the joint of the drive shaft fixed to the main body 2 side, and has a function as a rotating member for driving the pump 62 .

When the power switch 52 is pressed while the cartridge 3 is installed in the body 2, the battery 51 supplies power to the motor 55 and the high voltage generator 56. Motor 55 will drive pump 62, causing gears 624, 625 to rotate. The pump 62 sucks the liquid from the container 40 side and discharges it toward the nozzle 61 side. The liquid system is guided from the inside of the container 40 to the opening 610 of the nozzle 61 through the internal passage of the conductive tube 632, the suction passage part 621, the discharge passage part 622, the hole 622A and the passage part of the nozzle 61. The high voltage generator 56 applies a high voltage to the electrode 63 and applies a high voltage to the liquid via the electrode 63 . The liquid is electrostatically charged by the electrode 63 including the electrode portion inserted into the passage portion of the nozzle 61 . The charged liquid system is sprayed toward the object from the opening 610 of the nozzle 61 due to the potential difference between the object and the electrode 63 .

When a deposit of fibers is formed by the electrostatic spray method, the voltage (spinning voltage: equivalent to the potential difference between the electrode and the object) applied to the electrode of the electrostatic spray device 1 is used to fully charge the liquid composition. From a viewpoint, it is preferably 5 kV or more, more preferably 8 kV or more, and more preferably 10 kV or more. Moreover, from the viewpoint of preventing discharge between the electrode and the object, the spinning voltage is preferably 30 kV or less, more preferably 25 kV or less. From the above viewpoint, the spinning voltage is preferably 5 kV or more and 30 kV or less, more preferably 10 kV or more and 25 kV or less.

As described above, by the insertion of the first pin 66 into the first hole 27, the insertion of the second pin 631 into the second hole 28, and the insertion of the protrusion into the insertion hole, the liquid can be charged and the body 2 can be moved. That is, the first pin 66 and the second pin 631 function as the above-mentioned protrusions.

The first recessed portion 67 of the mounting portion 6 is provided to fit into the first recessed portion 24 of the mounted portion 23 . Thereby, the deviation of the movement direction of the mounting part 6 with respect to the mounted part 23 is suppressed. For example, since the side surface 671 of the first recessed part 67 and the side surface 241 of the first convex part 24 opposite to the surface 671 both extend in the z-axis direction, the mounting part 6 is moved by the sliding of the two surfaces 671 and 241. The movement direction with respect to the mounted part 23 is limited to the z-axis direction. Moreover, when the mounting part 6 is moved relative to the mounted part 23, the positional deviation of the mounting part 6 with respect to the mounted part 23 is suppressed by the fitting of the 1st recessed part 67 and the 1st convex part 24. For example, by making the side surface 671 of the first recessed part 67 contact the side surface 241 of the first convex part 24 facing the surface 671, the mounting part 6 is positioned in the negative y-axis direction relative to the mounted part 23. In this way, since the movement direction of the mounting part 6 relative to the mounted part 23 and the positional deviation during movement are suppressed, the mounting and detaching of the mounting part 6 to the mounted part 23, in other words, the mounting and detaching of the cartridge 3 to the housing 20 is smoothed. and stabilized. Thereby, for example, the connector 627 of the pump 62 can be connected to the connector on the motor 55 side more smoothly and reliably, so that the liquid suction and discharge operations by the pump 62 can be stabilized.

Furthermore, by the fitting of the first recessed portion 67 and the first protruding portion 24, as the moving direction of the mounting portion 6 with respect to the mounted portion 23 is guided, the insertion directions of the pins 66 and 631 with respect to the holes 27 and 28 are respectively guided. The inclination of the pins 66 and 631 with respect to the z-axis, that is, the normal line of the bottom surface 230 of the mounted part 23 is suppressed. Thereby, the deviation in the insertion direction of the pins 66 and 631 can be suppressed, and the stability and certainty of the insertion direction can be improved. In addition, by fitting the first recessed portion 67 and the first protruding portion 24, positional deviation when the mounting portion 6 moves relative to the mounted portion 23 is suppressed. When the pins 66 and 631 are inserted, the pins 66 and 631 are Positional deviation with respect to the mounted portion 23 is suppressed. Therefore, interference between the inner periphery of the holes 27 and 28 in the mounted portion 23 and the pins 66 and 631 can be avoided, and damage or breakage of the pins 66 and 631 can be prevented. In addition, the contact between the first pin 66 and the movable joint of the interlock switch 53 or the contact between the second pin 631 and the terminal 57 can be realized more accurately and reliably.

Moreover, after the mounting part 6 is mounted on the mounted part 23, the fitting of the first concave part 67 and the first convex part 24 also suppresses the pins 66, 631 from being inclined with respect to the z-axis. In other words, the angular deviation of the pins 66 and 631 with respect to the mounted part 23 is suppressed. Therefore, the contact between the first pin 66 and the movable joint of the interlock switch 53 or the contact between the second pin 631 and the terminal 57 can be realized more accurately and reliably. Furthermore, from the viewpoint of suppressing inclination, the height of the first convex portion 24 or the second convex portion 25 relative to the bottom surface 230 of the mounted portion 23 is preferably greater than the height of the pins 66 and 631 relative to the mounting surface 600 . In addition, the mounting surface 600 of the mounting portion 6 or the bottom surface 230 of the mounted portion 23 does not need to be a planar shape extending along the xy plane. In this embodiment, by making the mounting surface 600 and the bottom surface 230 of the mounted portion 23 contact each other at a portion extending along the xy plane, the inclination of the pins 66 and 631 relative to the z-axis can be more effectively suppressed.

In addition, when the mounting part 6 is mounted on the mounted part 23, the positional deviation of the pins 66, 631 relative to the mounted part 23 is suppressed by the fitting of the first recessed part 67 and the first convex part 24. For example, since the side surface 671 of the first recessed part 67 extends along the xz plane, the side surface 671 of the first recessed part 67 contacts the side surface 241 of the first convex part 24, so that the mounting part 6 faces the negative y-axis direction relative to the mounted part 23. Movement is restricted. Thereby, the pins 66 and 631 can be positioned at the correct position more stably and reliably. Therefore, the contact between the first pin 66 and the movable joint of the interlock switch 53 or the contact between the second pin 631 and the terminal 57 can be realized more accurately and reliably.

The second concave portion 68 of the mounting portion 6 is provided to be able to fit into the second convex portion 25 of the mounted portion 23 . Thereby, by fitting the second recessed portion 68 and the second protruding portion 25, the same advantages as those caused by the fitting of the first recessed portion 67 and the first protruding portion 24 can be obtained. In addition, the second protruding portion 25 does not need to be provided in the mounted portion 23 .

The first recessed portion 67 has a bottom surface 673 and a peripheral wall standing up from the bottom surface 673. The upright peripheral wall can easily restrict the movement of the first protruding portion 24. In the first recess 67, the peripheral wall preferably has two surfaces 671 and 672 or surfaces 674 and 675 facing each other. For example, the surfaces 671 and 672 are opposite to each other in the y-axis direction. Thereby, the movement of the first convex portion 24 relative to the first recessed portion 67 is restricted on both sides in the y-axis direction, thereby further restricting the movement. In this way, since the movement is restricted on both sides of the opposing direction, the inclination of the pins 66 and 631 with respect to the z-axis and the positional deviation of the pins 66 and 631 with respect to the mounted portion 23 can be more effectively suppressed.

The second recess 68 has three surfaces 681, 682, and 683 extending in different directions. Thereby, the movement of the second convex portion 25 relative to the second concave portion 68 is restricted in three directions, that is, three dimensions. Therefore, the inclination of the pins 66 and 631 with respect to the z-axis and the positional deviation of the pins 66 and 631 with respect to the mounted part 23 can be suppressed more effectively. In addition, since the first recessed portion 67 also has three surfaces 671, 673, 674, etc. extending in mutually different directions, it can be said to be the same as above.

The first recess 67 has a curved side surface 675 . This surface 675 is a curved portion of the inner peripheral surface of the first recessed portion 67, and may also be semi-cylindrical. This surface 675 makes it easy to restrict the movement of the first convex portion 24 relative to the first recessed portion 67 in three dimensions and in more directions. In addition, by reducing the corner of the side surface 675 of the first recessed portion 67 and making it smooth, the gap between the side surface 675 of the first recessed portion 67 and the side surface 245 of the first convex portion 24 facing it can be easily reduced. gap. Thereby, the inclination of the pins 66 and 631 with respect to the z-axis and the positional deviation of the pins 66 and 631 with respect to the mounted part 23 can be suppressed more effectively.

Furthermore, if the first concave portion 67 and the first convex portion 24 can be fitted, the outer shape of the first concave portion 67 projected onto the xy plane and the outer shape of the first convex portion 24 projected onto the xy plane can also be different. In other words, when the z-axis direction, that is, the direction in which the first recessed portion 67 and the first protruding portion 24 are fitted is the fitting direction, the shape of the cross section of the first protruding portion 24 orthogonal to the fitting direction may also be The shape of the cross section of the first recess 67 orthogonal to the fitting direction is different. For example, the first convex portion 24 may have a cuboid shape without a semi-cylindrical portion on the positive x-axis direction side. On the other hand, in this embodiment, the inner peripheral surface of the first recessed portion 67 and the outer peripheral surface of the first convex portion 24 have shapes that overlap each other when viewed from the fitting direction. The first convex portion 24 has a semi-cylindrical portion on the positive x-axis direction side, and has the same cross-sectional shape perpendicular to the fitting direction as the first recessed portion 67 . The term "same shape" here refers to similar shapes. Thereby, it is easy to reduce the gap between the side surface 675 of the first recessed part 67 and the side surface 245 of the first convex part 24 facing it.

The shortest distance d6 between the second pin 631 and the first recess 67 (see FIG. 9 ) is smaller than the distance d1 between the second pin 631 and the center O of the mounting surface 600 . By making the distance d6 small in this way, the above-mentioned advantage of guiding the second pin 631 and the like by the fitting between the first recessed portion 67 and the first convex portion 24 can be effectively obtained.

When the mounting part 6 is mounted on the mounted part 23, the mounting surface 600 is tilted rotatably around the straight line extending along the mounting surface 600 and passing through the center O. The first recessed portion 67 and the first pin 66 of the mounting portion 6 are provided on opposite sides with the above-mentioned straight line, for example, the straight line L1 shown in FIG. 9 . Thereby, the fitting between the first recessed portion 67 and the first protruding portion 24 suppresses the inclination of the mounting surface 600 caused by the rotation around the straight line L1, thereby suppressing the inclination of the first pin 66 with respect to the z-axis. tilt. Similarly, the second recessed portion 68 of the mounting portion 6, the first pin 66, and the second pin 631 are disposed on the opposite side while holding, for example, a straight line L2 orthogonal to the straight line L1 shown in FIG. 9 and passing through the center O. Thereby, the fitting between the second concave portion 68 and the second convex portion 25 suppresses the inclination of the mounting surface 600 caused by the rotation around the straight line L2, thereby suppressing the inclination of the pins 66, 631 with respect to the z-axis. tilt.

In addition, only by fitting the first recessed portion 67 and the first protruding portion 24 or by fitting the second recessed portion 68 with the second protruding portion 25, the relative position of the pins 66 and 631 relative to z can be obtained. The above-mentioned advantages include suppression of the inclination of the shaft and suppression of positional deviation of the pins 66 and 631 relative to the mounted portion 23 . On the other hand, in this embodiment, the fitting between the first recessed part 67 and the first convex part 24 and the fitting between the second recessed part 68 and the second convex part 25 can be performed more effectively. Get the above advantages. Furthermore, from this point of view, it is preferable to provide a plurality of sets for fitting the fitting recessed portions and the fitting convex portions, and the number is not limited to two sets.

The shortest distance d7 between the first recessed part 67 and the second recessed part 68 is set to be greater than the shortest distance d6 between the second pin 631 and the first recessed part 67, for example. By increasing the distance d7 in this way, the above-mentioned functional improvement caused by the two recessed portions 67 and 68 can be achieved.

The first recessed portion 67 and the second recessed portion 68 are provided on opposite sides across a straight line extending along the mounting surface 600 and passing through the center O, such as the straight line L2 shown in FIG. 9 . Thereby, by the fitting on both sides of the straight line L2, that is, the fitting between the first recessed part 67 and the first convex part 24 and the fitting between the second recessed part 68 and the second convex part 25, it is possible to suppress The inclination of the mounting surface 600 caused by the rotation around the straight line L2 can thereby suppress the inclination of the pins 66 and 631 relative to the z-axis. Moreover, it suffices that at least a part of the first recessed part 67 and at least a part of the second recessed part 68 are provided on opposite sides across the straight line L2.

Furthermore, the planar portions 601 and 602 on both sides in the y-axis direction of the outer circumferential surface of the mounting portion 6 are respectively slidable relative to the portions 231A and 232A of the wall surfaces 231 and 232 of the inner circumferential surface of the mounted portion 23 . Thereby, the movement or rotation direction of the mounting part 6 relative to the mounted part 23 is restricted to be parallel to the xz plane. Therefore, the mounting surface 600 can easily rotate around the straight line orthogonal to the portions 601 and 602 as the flat portions. On the other hand, as described above, by positioning the second recessed portion 68 of the mounting portion 6 and the pins 66 and 631 on opposite sides of the straight line (for example, the straight line L2) orthogonal to the portions 601 and 602, the above-mentioned rotation can be effectively suppressed. move. Furthermore, by positioning a portion of the first recessed portion 67 on the positive x-axis direction side and the second recessed portion 68 on opposite sides across a straight line (for example, straight line L2) orthogonal to the portions 601 and 602, the above-mentioned rotation can be effectively suppressed.

The cylindrical portion 65 of the mounting portion 6 is configured to fit into the third hole 29 of the mounted portion 23 . The cylindrical part 65 functions as a fitting convex part of the mounting part 6, and the third hole 29 functions as a fitting recessed part on the main body side. Similar to the fitting between the first concave portion 67 and the first convex portion 24, the inclination of the pins 66, 631 with respect to the z-axis can be suppressed by the fitting between the cylindrical portion 65 and the third hole 29, and The above-mentioned advantages include the position deviation of the pins 66 and 631 relative to the mounted portion 23 .

When the mounting part 6 is mounted on the mounted part 23 , the mounting surface 600 is tilted rotatably around a straight line extending along the mounting surface 600 and passing through the center O. The cylindrical portion 65 and the recessed portions 67 and 68 of the mounting portion 6 are provided on the opposite side with the above-mentioned straight line, for example, the straight line L1 shown in FIG. 9 . Thereby, by the fitting of both sides of the straight line L1, that is, the fitting of the cylindrical portion 65 and the third hole 29, and the fitting of the recessed portions 67, 68 and the convex portions 24, 25, it is possible to suppress the interference caused by the surroundings of the straight line L1. The inclination of the mounting surface 600 caused by the rotation can thereby suppress the inclination of the pins 66 and 631 relative to the z-axis.

The first recessed portion 67 , the second recessed portion 68 and the cylindrical portion 65 are provided on the mounting surface 600 . That is, the fitting recessed portion and the fitting convex portion are fitted at three positions of the mounting surface 600 . Thereby, the above-mentioned advantages such as the inclination of the pins 66 and 631 with respect to the z-axis and the positional deviation of the pins 66 and 631 with respect to the mounted part 23 can be more effectively suppressed.

The center of the mounting surface 600 exists within the range surrounded by the first recessed portion 67, the second recessed portion 68, and the cylindrical portion 65. Specifically, as shown in FIG. 9 , in the mounting surface 600 , the center R of the first recessed portion 67 , the center S of the second recessed portion 68 , and the center Q of the cylindrical portion 65 are used as vertices and are represented by single-dot dotted lines. Within the scope of the enclosed triangle, there is the center O of the mounting surface 600 . Thereby, the mounting surface 600 can be effectively prevented from rotating and tilting around the straight line extending along the mounting surface 600 and passing through the center O through the fitting of the above-mentioned portions 67 , 68 , and 65 . Therefore, the inclination of the pins 66 and 631 with respect to the z-axis can be suppressed more effectively.

Furthermore, in the outer peripheral surface of the housing 60 of the mounting portion 6, the portion 605 (see FIGS. 7 and 9 ) connected to the outer peripheral surface of the end portion 608 is connected to the outer surface of the housing 20 of the main body 2 . The shortest distance d4 (see FIG. 9 ) between the inner circumferential surface of the cylindrical portion 65 and the second pin 631 is set to be larger than the shortest distance d4 between the above-mentioned portion 605 of the outer circumferential surface of the housing 60 and the inner circumferential surface of the cylindrical portion 65 . Distance d5. By setting a relatively large distance d4 in this way, it is easy to prevent electrical conduction between the inside of the cylindrical portion 65 and the second pin 631 .

The mounting part 6 has a connecting part 64 connected to the liquid containing part 4 on the mounting surface 600 . The connecting portion 64 is located closer to the outer edge side of the mounting surface 600 than the center O side of the mounting surface 600 . Specifically, as shown in FIG. 9 , with respect to the midpoint of the line segment connecting the center O of the mounting surface 600 and the point P on the outer edge, the connecting portion 64 is located on the point P side. In this way, since the connecting portion 64 exists biasedly in the mounting surface 600 , when the mounting portion 6 is installed, the mounting surface 600 is more likely to be tilted relative to the bottom surface 230 of the mounted portion 23 . That is, there is a high possibility that the pins 66 and 631 are tilted with respect to the z-axis or that the pins 66 and 631 are misaligned with respect to the mounted portion 23 . Therefore, by fitting the recessed portion 67 and the like with the convex portion 24 and the like, the above advantages can be effectively obtained.

When installing the mounting part 6 on the mounted part 23, the connecting part 64 provided at the opening 26 of the container receiving part 260 of the body 2 may be used as a fulcrum, and then the mounting part 6 may be installed. At this time, the mounting surface 600 is tilted rotatably around the straight line extending along the mounting surface 600 and passing through the connecting portion 64 . Here, the pins 66 and 631 are closer to the connecting portion 64 than the center O of the mounting surface 600 . Specifically, as shown in FIG. 9 , in the x-axis direction, the pins 66 and 631 are located between the center O and the connecting portion 64 in the mounting surface 600 . Thereby, compared to the case where the pins 66 and 631 are closer to the end 608 side than the center O in the mounting surface 600, even if the mounting surface 600 is rotated and tilted with the connecting portion 64 as the fulcrum as described above, the tilt can still be suppressed. The resulting displacement of pins 66 and 631.

In addition, the rib 643 is connected to the second pin 631 and is provided to increase the strength of the second pin 631 held relative to the housing 60 . By positioning the second pin 631 closer to the connection portion 64 than the center O, the distance d2 between the second pin 631 and the connection portion 64 can be shortened. Thereby, the rib 643 can be easily disposed, and at the same time, the strength of the rib 643 itself can be improved. Specifically, as shown in FIG. 9 , the shortest distance d2 between the second pin 631 and the connecting portion 64 is shorter than the distance d1 between the second pin 631 and the center O of the mounting surface 600 . Thereby, the above-mentioned advantages can be effectively obtained.

Since the pump 62 of the mounting part 6 is a gear pump, it is easier to be miniaturized than a piston pump and can be installed not on the main body 2 side but on the cartridge 3 side. Therefore, the layout on both sides of the main body can be improved. By aligning the rotational axes of the gears 624 and 625 in the z-axis direction, the size in the z-axis direction in the thickness direction of the housing 60 can be suppressed, and the mounting portion 6 can be made thinner. In order for the pump 62 to efficiently suck in liquid, the container 40 of the liquid containing part 4 is freely deformable and flat. Since the container 40 is flat, the mounting surface 600 of the mounting portion 6 can be widened, so it is easy to provide the recessed portions 67 and 68 on the mounting surface 600 .

The recesses 67 and 68 are located at different positions from the pump 62 in the direction orthogonal to the rotation axis of the pump 62, that is, in the xy plane. Thereby, it is possible to suppress an increase in the size of the housing 60 in the z-axis direction of the rotation axis direction of the pump 62, thereby achieving a thinning of the mounting portion 6. Specifically, as shown in FIG. 9 , when viewed from the negative z-axis direction side, the recessed portions 67 and 68 do not overlap the second conductor 63B but are separated from the second conductor 63B. Thereby, the recesses 67 and 68 are not only located at different positions from the two gears 624 and 625 of the pump 62 in the xy plane, but are also located at different positions from the passage member 620 . Therefore, the size increase of the housing 60 in the z-axis direction can be more effectively suppressed.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings. However, the technical scope of the present invention is not limited to these examples. For those with ordinary knowledge in the technical field of the present invention, it should be understood that within the scope of the technical ideas described in the scope of the patent application, various modifications or modifications can be conceivable, and it should be understood that these examples also fall within the technical scope of the present invention. By.

Regarding the above embodiments, the present invention further discloses the above electrostatic spray device and cartridge. ＜1＞ An electrostatic spray device that sprays charged liquid, and is provided with: a main body, and a box capable of attaching and detaching the mounted portion of the body; the mounted portion has a fitting convex portion and an insertion hole; and the box is provided with: a liquid containing portion that contains the liquid; and an mounting portion mounted on the mounted portion; the mounting portion has: a fitting recessed portion configured to be fitted with the fitting convex portion; and a fitting recessed portion configured to be inserted into the insertion hole. The protrusion; when the above-mentioned mounting part is installed on the above-mentioned mounted part, the liquid can be charged by the insertion of the above-mentioned protrusion into the above-mentioned insertion hole, and by the fitting of the above-mentioned fitting convex part and the above-mentioned fitting recessed part, The protrusion is guided to be inserted into the insertion hole.

＜2＞ A cartridge for an electrostatic spray device that sprays a charged liquid, and is provided with: a liquid storage portion that stores the liquid; and an mounting portion that is mounted on the mounted portion of the main body of the electrostatic spray device; the mounting portion has: a fitting recess provided to fit into a fitting protrusion provided on the mounted part; and a protrusion configured to be inserted into an insertion hole provided in the mounted part; and the mounting part is attached to the mounted part When the part is installed, the liquid can be charged by the insertion of the protrusion into the insertion hole, and the insertion of the protrusion into the insertion hole is guided by the fitting of the fitting protrusion and the fitting recess. ＜3＞ The box of <2> above, wherein the electrostatic spray device is of a handheld type and has a shape, size and weight that can be held and used by a user with one hand. ＜4＞ The box of <2> or <3> above, wherein the main body has an actuating part and a housing housing the actuating part; and the mounted part is provided on the housing of the main body. ＜5＞ The box of <4> above, wherein the main body has a protector removably mounted on the housing; and the mounting portion of the box is held between the protector and the shell of the main body. ＜6＞ The cartridge of <4> or <5> above, wherein the actuating part of the body has: a battery; a motor powered by the battery; a high voltage generator powered by the battery to generate high voltage; A power switch with or without a changeover switch for supplying power from the battery to the above-mentioned motor and the above-mentioned high voltage generator; and a connection with or without a changeover switch for supplying power to the above-mentioned motor and the above-mentioned high-voltage generator from the above-mentioned battery. Lock switch. ＜7＞ The box of <6> above, wherein the housing of the main body has a holding part and a main receiving part, the battery and the power switch are stored in the holding part, the interlock switch, the motor and the high voltage generator are It is accommodated in the above-mentioned main accommodating part, and the above-mentioned mounted part is provided in the above-mentioned main accommodating part. ＜8＞ The box according to any one of the above <4> to <7>, wherein the outer surface of the housing of the above-mentioned main body has a mounting surface, and the mounting portion has a concave shape relative to the mounting surface; the above-mentioned The insertion hole is opened on the bottom surface of the mounted part.

＜9＞ The cartridge according to any one of the above <2> to <8>, wherein the mounting portion has: a pump driven by the motor to suck the liquid into the liquid containing portion; and a high voltage applied by the high voltage generator. , an electrode for charging the above-mentioned liquid; a nozzle for spraying the above-mentioned charged liquid; and a casing for accommodating the above-mentioned pump and the above-mentioned electrode. ＜10＞ The box of <9> above, wherein the housing of the mounting portion has a mounting surface opposite to the bottom surface of the mounted portion; and the fitting recess is provided in the housing of the mounting portion relative to the above-mentioned mounting portion. The mounting surface is in a concave shape; the protrusions protrude from the mounting surface. ＜11＞ The box of any one of the above <2> to <10>, wherein the protrusion includes a first pin, and the first pin is configured to abut the interlock switch of the body by being inserted into the insertion hole; The interlock switch operates in such a manner that it can supply power to the high voltage generator of the main body by contacting the first pin. ＜12＞ The cartridge according to any one of <2> to <11> above, wherein the mounting portion further includes an electrode for charging the liquid; and the protrusion includes a second pin connected to the electrode. The conductive second pin is disposed so as to be abutted against the terminal on the output side of the high voltage generator of the main body by being inserted into the insertion hole. ＜13＞ The cartridge according to any one of the above <2> to <12>, wherein the mounting portion further includes a gear pump; and the fitting recess is located with the gear in a direction orthogonal to the rotation axis of the gear pump. Pump different positions.

＜14＞ The box according to any one of the above <2> to <13>, wherein the fitting recess has two surfaces facing each other. ＜15＞ The box according to any one of <2> to <14>, wherein the fitting recess has three surfaces extending in different directions from each other. ＜16＞ The box according to any one of the above <2> to <15>, wherein the inner peripheral surface of the fitting recess has a curved portion. ＜17＞ The box according to any one of the above <2> to <16>, wherein the inner circumferential surface of the fitting recess and the outer circumferential surface of the fitting protrusion have a structure formed by the fitting recess and the fitting protrusion. Shapes that overlap each other when viewed in the direction of fitting.

＜18＞ The cassette according to any one of the above <2> to <17>, wherein the mounting portion further includes a fitting convex portion capable of fitting into a body-side fitting recess provided in the mounted portion. ＜19＞ The box of <18> above, wherein the fitting convex portion of the mounting portion is cylindrical; and the inner side of the fitting convex portion of the mounting portion is connected to the inside of the mounting portion. ＜20＞ The box of <19> above, wherein the shortest distance between the inner peripheral surface of the fitting convex portion of the mounting portion and the protrusion is longer than the portion of the outer peripheral surface of the mounting portion connected to the outer surface of the body. The shortest distance between the inner peripheral surfaces of the fitting convex portions of the mounting portion is large. ＜21＞ The cartridge of <19> or <20> above, wherein the mounting part is further equipped with a pump; and a member for driving the pump is provided inside the fitting convex part of the mounting part.

＜22＞ The cassette according to any one of <2> to <21> above, wherein the mounting part further includes a mounting surface provided to face the mounted part. ＜23＞ The box of <22> above, wherein the mounting portion further includes: a fitting convex portion provided on the mounting surface so as to fit into a body-side fitting recessed portion provided on the mounted portion; in the above-mentioned The two fitting recessed portions are provided on the mounting surface, and the center of the mounting surface exists within a range surrounded by the fitting convex portion of the mounting portion and the two fitting recessed portions. ＜24＞ The box of <22> or <23> above, wherein the fitting recess and the protrusion of the mounting part are provided on the mounting surface; and the liquid storage part is connected to the outer edge of the center side of the mounting surface. side. ＜25＞ The cartridge according to any one of the above <22> to <24>, wherein the protrusion of the mounting part is in the mounting surface and is provided between the mounting part and the liquid containing part with respect to the center of the mounting surface. side of the connection. ＜26＞ The box according to any one of the above <22> to <25>, wherein the fitting recess and the protrusion of the mounting part are arranged to hold the straight line extending along the mounting surface and passing through the center of the mounting surface. It is arranged on the above-mentioned mounting surface in a straight line and on the opposite side. ＜27＞ The box according to any one of the above <22> to <26>, wherein the shortest distance between the protrusion of the mounting portion and the fitting recess is shorter than the distance between the protrusion and the center of the mounting surface. ＜28＞ The box according to any one of the above <22> to <27>, wherein a first recess and a second recess are provided on the mounting surface as the fitting recess; the shortest distance between the first recess and the second recess is It is longer than the shortest distance between the above-mentioned protrusion and the above-mentioned first recessed part. ＜29＞ The box according to any one of the above <22> to <28>, wherein a first recess and a second recess are provided on the mounting surface as the fitting recess; and the first recess and the second recess are held in place by the installation. The center of the surface and along the straight line extending from the above-mentioned mounting surface are arranged on the opposite side.

＜30＞ The cassette according to any one of the above <2> to <29>, wherein a plurality of sets are provided for fitting of the fitting recessed portion of the mounting portion and the fitting convex portion of the mounted portion. ＜31＞ The box according to any one of the above <2> to <30>, wherein the fitting recessed portion of the mounting portion has a first recess and a second recess; and the fitting convex portion of the mounted portion has a fitting recess. The first convex part is fitted to the first recessed part, and the second convex part is fitted to the second recessed part.

＜32＞ The cartridge according to any one of the above <2> to <31>, wherein the outer peripheral surface of the mounting portion has a flat surface capable of sliding on the inner peripheral surface of the mounted portion; and the fitting recessed portion of the mounting portion The protrusions are located on opposite sides of each other across a straight line orthogonal to the flat surface. ＜33＞ The cartridge according to any one of the above <2> to <32>, wherein the outer peripheral surface of the mounting portion has a flat surface capable of sliding on the inner peripheral surface of the mounted portion; and the fitting recessed portion of the mounting portion It has a first recessed part and a second recessed part, and the first recessed part and the second recessed part are located on opposite sides of each other across a straight line orthogonal to the flat surface part.

＜34＞ An electrostatic spray device is provided with the above-mentioned main body and the above-mentioned cartridge in any one of the above-mentioned <2> to <33>. ＜35＞ The electrostatic spray device of the above <34>, wherein the electrostatic spray device is provided with: a main body, and an attached part that can attach and detach a cartridge to the main body; the attached part has a fitting convex part and an insertion hole; and the above-mentioned cassette is attached to the When the mounting part mounts the mounted part, the insertion of the protrusion into the insertion hole allows the liquid to be charged, and the fitting of the fitting convex part with the fitting recess guides the pair of protrusions. Insertion of the above insertion hole.

1: Electrostatic spray device 2: Ontology 3:Box 4: Liquid containment department 5:Action part 6:Installation Department 20: Shell 20A:Control Department 20B: Main Containment Unit 21: Protective parts 23: Installed part 24: 1st convex part (fitting convex part) 25: 2nd convex part (fitting convex part) 25A, 25B: Wall 26:Opening part 27: 1st hole (insertion hole) 28: 2nd hole (insertion hole) 29: 3rd hole (fitting recess) 40:Container 41:Connection part 51:Battery 52:Power switch 53:Interlock switch 54:Motor controller 55: Motor 56:High voltage generator 57:Terminal 60: Shell 60A:Part 1 60B:Part 2 61:Nozzle 62:Gear pump 63:Electrode 63A: 1st conductor 63B: Second conductor 64:Connection part 65: Cylindrical part (fitting convex part) 66: 1st pin (protrusion) 67: 1st recess (fitting recess) 68: 2nd recess (fitting recess) 200: Installed surface 230: Bottom 231,232: Wall 231A, 231B, 232A, 232B: part 231C: Noodles 241,242: Side 243:Top surface 244:Side 245:Side 260: Container Containment Department 410:Socket 411: Check valve 412: The stuck part 600:Mounting surface 601,602,603,604,605: part 606: plate-shaped part 607: Wall 608:End 609:Containment recess 610: opening 620:Pathway component 621: Suction passage part 622: spit out passage part 622A: Hole 623:Drive shaft 624:Driving gear 625: driven gear 626: driven shaft 627:Connector 631: 2nd pin (protrusion) 632:Conductive tube 633: Bottom 634: Wall 635:hole 640:Base 641: Embolism 642:Latching part 643: Rib 671:Side 672:Side 673: Bottom surface 674:Side 675:Side 681:Side 682:Side 683: Bottom

Figure 1 is a side view of an electrostatic spray device according to an embodiment of the present invention. 2 is a block diagram showing the electrical connection structure of the actuating part of the main body of the electrostatic spray device of the same embodiment. 3 is a perspective view of the inner box of the electrostatic spray device according to the same embodiment. 4 is a perspective view of the main receiving portion of the main body of the electrostatic spray device of the same embodiment. 5 is a front view of the holder side of the main receiving portion in the main body of the electrostatic spray device of the same embodiment. 6 is a side view of the main receiving portion in the main body of the electrostatic spray device of the same embodiment. 7 is a perspective view of the mounting portion of the cartridge in the electrostatic spray device of the same embodiment. 8 is a side view of the mounting portion of the cartridge in the electrostatic spray device of the same embodiment. 9 is a front view of the mounting surface side of the mounting portion of the cartridge in the electrostatic spray device of the same embodiment. 10 is a perspective view of the electrostatic spray device of the same embodiment, in which a part of the housing on the mounting surface side is omitted from the mounting portion of the cartridge. 11 is a perspective view of the electrostatic spray device of the same embodiment, in which part of the housing and part of the conductor on the mounting surface side are omitted from the mounting part of the cartridge.

1: Electrostatic spray device

2: Ontology

20: Shell

20A:Control Department

20B: Main Containment Unit

21: Protective parts

52:Power switch

61:Nozzle

Claims (10)

An electrostatic spray device that sprays charged liquid and has: ontology, and A box capable of attaching and detaching the installed part of the above-mentioned body; The above-mentioned mounted part has a fitting convex part and an insertion hole; The above box has: A liquid containing part that contains the above liquid; and The mounting part installed on the above-mentioned mounted part; The above installation part has: A fitting recessed portion configured to fit with the fitting convex portion; and A protrusion configured to be inserted into the insertion hole; When the mounting portion is mounted to the mounted portion, the liquid can be charged by inserting the protrusion into the insertion hole, and the fitting convex portion and the fitting concave portion are fitted to guide the liquid. The protrusion is inserted into the insertion hole. A box is used for an electrostatic spray device that sprays charged liquid, and it has: A liquid containing part that contains the above liquid; and The mounting portion is mounted on the mounted portion of the main body of the above-mentioned electrostatic spray device; The above installation part has: A fitting recessed portion that can be fitted with a fitting convex portion provided on the mounted portion; and A protrusion configured to be inserted into an insertion hole provided in the mounted portion; When the mounting portion is mounted to the mounted portion, the liquid can be charged by inserting the protrusion into the insertion hole, and the fitting convex portion and the fitting concave portion are fitted to guide the liquid. The protrusion is inserted into the insertion hole. The box of claim 2, wherein the protrusion includes a first pin, and the first pin is configured to abut the interlock switch of the body by being inserted into the insertion hole; The interlock switch operates in such a manner that it can supply power to the high voltage generator of the main body by contacting the first pin. The cartridge of claim 2 or 3, wherein the above-mentioned mounting part is further provided with an electrode for charging the above-mentioned liquid; The protrusion includes a second pin connected to the conductivity of the electrode, and is configured to be inserted into the insertion hole to contact a terminal on the output side of the high voltage generator of the body. . Such as the box of claim 2 or 3, wherein the above-mentioned installation part is further equipped with a gear pump; The fitting recess is located at a different position from the gear pump in a direction orthogonal to the rotation axis of the gear pump. The box of claim 2 or 3, wherein the fitting recess has two surfaces facing each other. The box of claim 2 or 3, wherein the fitting recess has three surfaces extending in different directions. Such as the box of claim 2 or 3, wherein the above-mentioned installation part further includes: A mounting surface arranged to face the above-mentioned mounted part; and The fitting convex portion provided on the mounting surface is capable of being fitted with the fitting recessed portion provided on the main body side of the mounted portion; Two of the above-mentioned fitting recesses are provided on the above-mentioned mounting surface, The center of the mounting surface exists within the range surrounded by the fitting convex portion and the two fitting recessed portions of the mounting portion. The box of claim 2 or 3, wherein the above-mentioned mounting part has a mounting surface disposed opposite to the above-mentioned mounted part; The fitting recess and the protrusion of the mounting part are provided on the mounting surface; The liquid containing portion is connected to an outer edge side of the center side of the mounting surface. The box of claim 2 or 3, wherein the above-mentioned mounting part has a mounting surface arranged opposite to the above-mentioned mounted part; The fitting recess and the protrusion of the mounting portion are provided on the mounting surface so as to be on opposite sides of a straight line extending along the mounting surface and passing through the center of the mounting surface.