Electrostatic spray device, cartridge, and cover

Patent metadata

Field	Value
Publication number	US-12263497-B2
Application number	US-202017614696-A
Country	US
Kind code	B2
Filing date	May 22, 2020
Priority date	May 31, 2019
Publication date	Apr 1, 2025
Grant date	Apr 1, 2025

Abstract

Provided is a hand-held type electrostatic spray device ( 1 ) spraying an electrically charged liquid, the electrostatic spray device ( 1 ) comprising: a voltage source; a needle-shaped electrode ( 53 : a base electrode) for electrically charging the liquid to which a voltage is applied from the voltage source and which includes a linear tip portion; a second bottom portion ( 32 : an additional electrode) of a second electrode member ( 3 ) to which a voltage is applied from the voltage source; and a conductor ( 6 ) which is electrically isolated from the second bottom portion ( 32 ) and the needle-shaped electrode ( 53 ) and is disposed on a spray side of the liquid from the second bottom portion ( 32 ), at least a part of the conductor ( 6 ) overlapping with the second bottom portion ( 32 ) in a direction orthogonal to a spray direction of the liquid.

First claim

The invention claimed is:

1. A hand-held type electrostatic spray device which has a shape or a size that a user is capable of retaining with a hand and sprays an electrically charged liquid, the electrostatic spray device comprising:
a voltage source;
a base electrode for electrically charging the liquid to which a voltage is applied from the voltage source and which includes a linear tip portion;
an additional electrode to which a voltage is applied from the voltage source; and
a conductor which is electrically isolated from the base electrode and the additional electrode and is disposed apart with respect to the additional electrode in a spray direction of the liquid,
wherein at least a part of the conductor overlaps with the additional electrode viewed from a direction along the spray direction of the liquid, and
wherein the conductor is disposed along a circumference of the tip portion of the base electrode.

2. The electrostatic spray device according to claim 1 , wherein at least a part of the conductor includes a surface expanding along the direction orthogonal to the spray direction of the liquid.

3. The electrostatic spray device according to claim 1 , further comprising:
a cartridge,
wherein the cartridge includes a cartridge side housing which is an insulator containing the base electrode and the additional electrode, and
the conductor is provided on an outer surface of the cartridge side housing.

4. The electrostatic spray device according to claim 3 ,
wherein the cartridge further includes a nozzle, and
the conductor is disposed along a circumference of the nozzle on the additional electrode side from a tip portion of the nozzle.

5. The electrostatic spray device according to claim 1 , further comprising:
a main body side housing which contains the voltage source;
a nozzle which protrudes from an outer surface of the main body side housing; and
a cover which is an insulator covering the circumference of the nozzle on the outer surface of the main body side housing,
wherein the conductor is provided on an outer surface or an inner surface of the cover.

6. The electrostatic spray device according to claim 1 ,
wherein the liquid is a solution in which a high-molecular compound that is capable of forming a fiber is dissolved in a solvent.

7. The electrostatic spray device according to claim 1 ,
wherein a deposited material of a fiber is formed on a surface of a target by an electrostatic spray method.

8. The electrostatic spray device according to claim 1 , further comprising:
a main body side housing;
a cover; and
a cartridge,
wherein the main body side housing is formed of an insulating material.

9. The electrostatic spray device according to claim 1 ,
wherein the base electrode is provided within a passage from a container containing the liquid to a nozzle.

10. The electrostatic spray device according to claim 1 , further comprising:
a first electrode member which includes a first bottom portion, a first wall portion, a needle-shaped electrode, a container connection portion, and a terminal,
wherein the needle-shaped electrode functions as the base electrode.

11. The electrostatic spray device according to claim 1 ,
wherein at least a part of the additional electrode includes a surface expanding along the direction orthogonal to the spray direction of the liquid.

12. The electrostatic spray device according to claim 1 , further comprising:
a tubular electrode which protrudes toward a nozzle side from the additional electrode,
wherein the tubular electrode is connected to the additional electrode.

13. The electrostatic spray device according to claim 1 , further comprising:
a second electrode member which is formed of a conductive material,
wherein the second electrode member includes a second wall portion, a second bottom portion, and a tubular electrode,
wherein the second bottom portion functions as the additional electrode, and
wherein the tubular electrode and the additional electrode are portions of the second electrode member.

14. The electrostatic spray device according to claim 1 ,
wherein the conductor is formed in the shape of a ring in a circumference direction of an axis of a nozzle.

15. The electrostatic spray device according to claim 1 ,
wherein the conductor is disposed in a position overlapping with a tip of the base electrode or in the additional electrode side from the tip, in a direction along the spray direction of the liquid.

16. A hand-held type electrostatic spray device which has a shape or a size that a user is capable of retaining with a hand and sprays an electrically charged liquid, the electrostatic spray device comprising:
a voltage source;
a base electrode for electrically charging the liquid to which a voltage is applied from the voltage source and which includes a linear tip portion;
an additional electrode to which a voltage is applied from the voltage source; and
two or more conductors which are electrically isolated from the base electrode and the additional electrode and are disposed apart with respect to the additional electrode in a spray direction of the liquid,
wherein at least a part of the two or more conductors overlaps with the additional electrode viewed from a direction along the spray direction of the liquid, and
wherein the two or more conductors are electrically isolated from each other and are disposed to overlap with each other viewed from a direction along the spray direction of the liquid.

17. A hand-held type electrostatic spray device which has a shape or a size that a user is capable of retaining with a hand and sprays an electrically charged liquid, the electrostatic spray device comprising:
a voltage source;
a base electrode for electrically charging the liquid to which a voltage is applied from the voltage source and which includes a linear tip portion;
an additional electrode to which a voltage is applied from the voltage source; and
a conductor which is electrically isolated from the base electrode and the additional electrode and is disposed apart with respect to the additional electrode in a spray direction of the liquid,
wherein at least a part of the conductor overlaps with the additional electrode viewed from a direction along the spray direction of the liquid,
wherein the electrostatic spray device further comprises a tubular electrode to which a voltage is applied from the voltage source and which surrounds the tip portion of the base electrode,
wherein the tubular electrode is connected to the additional electrode, and
wherein the conductor is disposed along a circumference of the tubular electrode.

Assignees

• Kao Corp

Inventors

• Kodama Shinji

Classifications

• A61M35/003

  Portable hand-held applicators having means for dispensing or spreading integral media (hand-held massage devices with liquid delivery A61H7/003) · CPC title

• B05B5/0535

  at least two electrodes having different potentials being held on the discharge apparatus, one of them being a charging electrode of the corona type located in the spray or close to it, and another being of the non-corona type located outside of the path for the material · CPC title

• B05B5/1691 Primary

  Apparatus to be carried on or by a person or with a container fixed to the discharge device · CPC title

• B05B5/0533

  Electrodes specially adapted therefor; Arrangements of electrodes · CPC title

• A45D34/04

  Appliances specially adapted for applying liquid, e.g. using roller or ball · CPC title