JP6087657B2 - Rotating device for rotary cleaning tool and ear stick - Google Patents

Description

  The present invention relates to a cleaning tool such as an earpick and a toothbrush, a cleaning tool such as a gap cleaning tool, and a cleaning tool (hereinafter collectively referred to as a cleaning tool), and in particular for rotating an electric rotary cleaning tool. The present invention relates to a rotating device and an earpick attached to the rotating device.

  Patent Document 1 describes an automatic earpick as an example of an electric rotary cleaner. FIG. 7 shows the configuration of the automatic earpick described in Patent Document 1. In FIG. 7, reference numeral 1 denotes an electric motor main body, and the electric motor main body 1 is formed of a case 4 in which a driving unit 2 and a battery 3 serving as a power source unit are accommodated. An opening cylinder portion 4 a is formed on the distal end side of the case 4 so as to surround the rotating shaft 2 a of the driving unit 2 housed therein. A connecting elastic portion 5 that transmits the rotational force of the drive unit 2 is attached to the rotation shaft 2 a of the drive unit 2.

  Reference numeral 6 denotes an earpick part main body, and a base end part of the earpick part main body 6 is attached to the connection elastic part 5. The earpick part main body 6 rotates integrally with the rotation shaft 2 a of the drive part 2 via the connection elastic part 5. An earpick shaft 7 is formed at the tip of the earpick main body 6. A brush part 8 is implanted and formed on the earpick shaft part 7. The brush portion 8 is implanted in a spiral shape continuously in the direction opposite to the rotation direction of the rotary shaft 2a from the distal end side to the proximal end side of the peripheral side surface portion of the earpick shaft portion 7.

  According to this automatic earpick, the earwax or the like in the ear canal can be automatically scraped by the rotation of the brush unit 8.

Registered Utility Model No. 311382

  By the way, the conventional automatic earpick device described above does not employ a waterproof structure, and therefore, if the earpick part main body 6 can be removed from the connection elastic part 5, for example, the dirt of the earpick part main body 6 can be washed away. When the electric motor main body 1 is dirty, it cannot be washed.

  On the other hand, the electric rotary cleaning tool is not limited to the electric rotary earpick, for example, there is also an electric rotary toothbrush, and it is extremely convenient if the earpick and the toothbrush bar can be replaced with one rotary device. The rotating device can be used for a plurality of purposes. When considering application to such an electric rotary toothbrush, the rotating device needs a waterproof structure.

  In view of such circumstances, an object of the present invention is to provide a rotating device for a rotary cleaning tool having a waterproof structure, and further provide an earpick excellent in performance and safety attached to the rotating device. There is.

According to the invention of claim 1, the rotating device for the rotary cleaning tool includes a case, a power supply unit and a driving unit housed in the case, and a holder to which the shaft of the rotary cleaning tool is inserted and attached. The holder is positioned at an opening formed at one end of the case and is driven to rotate by a drive unit. Packing is provided between the holder and the case, and the inner peripheral surface of the holder into which the shaft portion is inserted is A shape that matches the D-cut shape formed by the shaft portion is fixed to a tip side portion that protrudes to the outside from the opening of the holder, and a locking piece formed on the shaft portion is locked to provide a rotary cleaner. It is assumed that a locking window for preventing the removal is formed .

  In the invention of claim 2, in the invention of claim 1, the holder is supported by the case via the bearing, and a rubber seal is provided on the end face of the bearing on the opening side.

According to the invention of claim 3, ear bars attached to the rotary device for rotating the cleaning tool of claim 1 or 2, wherein the said shaft portion, ear part formed by insert molding on the front end side of the shaft portion more becomes, ear portion is made of a flexible material, is intended to tip with a thin screw configuration, the flange-shaped stopper to prevent over insertion into the ear canal is assumed to be formed on the shaft portion.

  According to the invention of claim 4, in the invention of claim 3, the earpick part is made of rubber.

  According to a fifth aspect of the present invention, in the third or fourth aspect of the present invention, the protrusion constituting the screw shape has a trapezoidal cross-sectional shape.

  According to the rotating device for a rotary cleaner according to the present invention, since it has a waterproof structure, it can be used for applications that require waterproofing. Therefore, for example, it can be used for various applications such as an electric rotary earpick and an electric rotary toothbrush that requires waterproofing, and a rotating device that is highly convenient in that respect can be provided.

  Moreover, if the earstick according to the present invention is used, the earwax can be efficiently scraped to clean the earwax, and the eardrum is not damaged due to excessive insertion. Therefore, the ear stick excellent in performance and safety can be provided.

1A is a plan view showing an electric rotary earpick in which one embodiment of the earpick according to the present invention is attached to one embodiment of the rotating device for a rotary cleaning tool according to the present invention, and FIG. The elements on larger scale of FIG. 1B. 1A is a plan view of the ear stick in FIG. 1, B is a front view thereof, and C is a side view thereof. The front view which shows the other example of the rotary cleaning tool attached to the rotation apparatus for rotary cleaning tools in FIG. The perspective view which shows the stopper added to the electric rotary earpick shown in FIG. The bottom view which shows the state in which the stopper shown in FIG. 5 was attached to the electric rotary earpick shown in FIG. Sectional drawing which shows the prior art example of an electric rotary cleaning tool.

  Embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows the configuration of an electric rotary earpick in which one embodiment of the earpick according to the present invention is attached to one embodiment of a rotating device for a rotary cleaning tool according to the present invention, and FIG. The detail of the principal part of a cross-sectional structure is shown.

  The rotating device 10 has an elongated rod-like outer shape so that it can be easily gripped, and the case constituting the outer shape is constituted by a short upper case 11 and a long lower case 12 following the upper case 11 in this example. Has been. The upper case 11 and the lower case 12 are made of resin and are fitted and fixed to each other. As shown in FIG. 1B, a battery 13 as a power supply unit, a power switch 14, a motor 15 as a drive unit, and a gear box 16 are accommodated in the lower case 12.

  The movable portion where the power switch 14 is located is provided with a rubber 17 having a convex shape formed in two colors with the lower case 12, and the power switch 14 is pressed by pressing a pressing portion 17 a formed on the rubber 17. Is pressed, and the power switch 14 is sequentially switched on and off. In FIG. 1B, 18 and 19 are terminals that are in contact with the positive electrode and the negative electrode of the battery 13, respectively, and the terminal 18 is attached to a battery cap 21 that covers the rear end of the lower case 12. In FIG. 1B, detailed illustration of wiring and the like is omitted.

  A holder 22 is positioned in the opening 11 a formed at one end (tip) of the upper case 11. The holder 22 includes a cylindrical portion 22a, a bottom surface portion 22b that covers one end of the cylindrical portion 22a, and a cylindrical connecting portion 22c that is formed to protrude outside (outer surface) of the bottom surface portion 22b. A rotating shaft 16a protruding from the gear box 16 is connected and fixed to the connecting portion 22c. The tip end side of the cylindrical portion 22 a protrudes from the opening 11 a of the upper case 11.

  When the power switch 14 is turned ON, the motor 15 rotates, and the rotation of the rotating shaft 15a of the motor 15 is transmitted to the holder 22 via the gear box 16 so that the holder 22 is rotationally driven. A gear box 16 having a plurality of gears is provided to decelerate the rotation of the motor 15. In this example, the gear is a helical gear.

  As described above, the cylindrical portion 22a of the holder 22 connected to the rotary shaft 16a of the gear box 16 and driven to rotate is supported by the upper case 11 via the ball bearing 23. Further, a packing 24 is provided between the holder 22 and the upper case 11 on the opening 11a side. The packing 24 has a shape as shown in an enlarged view in FIG. 2, and includes an annular thick portion 24a and an annular thin portion 24b located on the inner periphery of the thick portion 24a. The thin portion 24b has a cross-sectional shape as shown in FIG. The packing 24 is made of rubber, for example.

A projecting portion 22 e is formed in a flange shape on the outer peripheral surface of the cylindrical portion 22 a of the holder 22, and the packing 24 is surrounded by the projecting portion 22 e of the holder 22, the cylindrical portion 22 a and the upper case 11. Is placed in the space. The outer peripheral side of the thick portion 24 a is formed in a trapezoidal cross section and is pressed against the inner peripheral surface of the upper case 11, while the inner end side of the thin portion 24 b is pressed against the cylindrical portion 22 a of the holder 22. . Further, narrow (thin) ridges 24c and 24d are formed in annular shapes on both end surfaces in the axial direction of the annular thick portion 24a, and these ridges 24c and 24d are respectively formed in the upper case 11. Are in pressure contact with the inner surface of the front end of the holder 22 and the protrusion 22 e of the holder 22.

  Since the packing 24 has the shape as described above, the holder 22 does not hinder the rotation of the holder 22 and the holder 22 can rotate well.

  The rotating device 10 is provided with the above-described packing 24 so that the opening 11a at the tip of the upper case 11 is waterproofed, and the battery cap 21 at the rear end of the lower case 12 is attached to the portion. As shown in FIG. 1B, since the O-ring 25 is disposed in the fitting portion between the lower case 12 and the battery cap 21, the waterproof portion of the battery cap 21 mounting portion is also realized. It has a waterproof structure.

  In this example, as shown in FIG. 2, a contact-type rubber seal 26 is provided on the end surface of the ball bearing 23 on the front end side (the opening 11a side of the upper case 11). The side is further waterproof.

  Next, the configuration of the earpick 30 attached to the holder 22 of the rotating device 10 will be described.

  FIG. 3 shows a configuration of the earpick 30, and the earpick 30 includes a shaft portion 31 and an earpick portion 41. The shaft portion 31 includes a large-diameter base portion 32, a small-diameter tip portion 33 (see FIG. 1B), and a tapered intermediate portion 34 extending from the base portion 32 to the tip portion 33. A stopper 35 having a flange shape is formed at the boundary between the base portion 32 and the intermediate portion 34, and a stopper 36 having the same shape as the stopper 35 is formed on the base portion 32 so as to be separated from the stopper 35.

  The outer peripheral surface of the base portion 32 on the base end side of the stopper 36 has a D-cut shape in which a part of the cylindrical surface is cut to form a flat portion 32a. Further, in the portion where the flat portion 32 a is formed, the locking piece 37 having a cantilever shape is formed in a shape that is cut into the base portion 32 following the stopper 36 with the stopper 36 side as a support end. Yes. A locking protrusion 37 a is formed on the outer surface of the free end of the locking piece 37.

  The shaft portion 31 having the above shape is made of a hard resin such as polypropylene. On the other hand, the earpick part 41 is made of a flexible elastomer, and specifically made of rubber such as silicone rubber. The rubber has a hardness of about 40 ° to 70 °.

  The ear pick part 41 is formed and integrated by insert molding with an undercut from the tip part 33 to the intermediate part 34 of the shaft part 31. As shown in FIG. 1B, two through holes (undercut portions) 38 for resin flow erosion are formed in the intermediate portion 34 of the shaft portion 31.

  A screw part 42 having a thin tip is formed at a portion of the ear picker 41 located around the tip 33 of the shaft 31. In this example, the screw portion 42 is gradually thickened toward the rear end, and the protrusion 42a constituting the screw shape has a trapezoidal cross-sectional shape with a thickness (width) as shown in FIG. 1B. ing.

  The ear stick 30 having the above-described configuration is attached to the holder 22 with the shaft portion 31 inserted into the holder 22 of the rotating device 10. The inner peripheral surface of the cylindrical portion 22a of the holder 22 into which the shaft portion 31 is inserted has a shape that matches the D-cut shape of the shaft portion 31. Also, as shown in FIG. 22d is formed. When the ear stick 30 is inserted into the cylindrical portion 22a, the rotation is restricted and the ear stick 30 rotates integrally with the holder 22, and the locking protrusion 37a of the locking piece 37 is engaged as shown in FIG. It is locked to the stop window 22d and is prevented from coming off. It should be noted that the stopper 36 of the earpick 30 is in contact with the holder 22.

  When removing the earpick 30 from the holder 22, it is only necessary to push the locking projection 37 a located in the locking window 22 d to release the locking, whereby the earpick 30 can be easily pulled out. In addition, when inserting / removing the earpick 30, it is only necessary to hold the two stoppers 35, 36 with a finger, and the two stoppers 35, 36 function as a finger hook.

  The electric rotary earpick composed of the rotating device 10 and the earpick 30 described above has the advantages and effects listed below.

<Earpick 30>
1) Since the earpick part 41 is made of a flexible material, the ear canal is not damaged. In addition, for example, the conventional brush type has a problem of occurrence of disconnection or breakage, and the hard one has a problem that the scraping efficiency is poor due to sliding, but such a problem can be solved.

2) Since the screw part 42 has a tapered shape, the earwax is not pushed in, and the earwax is reliably caught. Further, since the protrusion 42a constituting the screw portion 42 has a thickness, the earwax is easily caught and the earwax can be efficiently removed.
3) By slowing down the rotation, the earwax is not scattered, the earwax can be sent out in a screw shape, and can be scraped out well, and the earwax can be cleaned without being left behind.

4) Since the stopper 35 for preventing excessive insertion into the external auditory canal is provided, the eardrum is not damaged due to excessive insertion. Note that the distance L1 from the tip of the ear stick 30 to the stopper 35 and the diameter D of the stopper 35 are, for example, a standard 30 mm depth to the eardrum of the ear canal and a standard 4.5 mm × 6.6 mm ellipse of the ear canal diameter.
L1 = 29mm, D = 8.5mm
Set to

<Rotating device 10>
1) Since it has a waterproof structure as described above, it can be washed, for example, and can be used for applications that require waterproofing.
2) Since the gear in the gear box 16 is a helical gear in order to reduce rotational vibration noise, the gear box 16 is excellent in quietness, and further a silencing effect can be obtained by the sealing effect of the packing 24. .

  In the above-described example, the screw portion 42 of the earpick 30 has a thin tip and a thick rear end. For example, the middle portion may have a thick shape (bump shape).

  Further, the rotating device 10 includes a packing 24 and a rubber seal 26 for waterproofing on the tip end side of the upper case 11, but if it is easy to waterproof as in the case of using the above-mentioned electric rotary earpick, for example, packing Only 24 may be used.

  FIG. 4 shows a toothbrush bar that can be attached to the rotating device 10 in place of the earpick 30.

  The toothbrush bar 50 includes a shaft part 51 having a shape similar to that of the shaft part 31 of the earpick 30 and a toothbrush part 52 that is implanted around the tip of the shaft part 51. In addition, in FIG. 4, illustration of the flocking of the toothbrush part 52 currently formed by planting is abbreviate | omitted and shown.

  If this toothbrush bar 50 is attached to the rotating device 10, an electric rotary toothbrush can be constructed.

  FIG. 5 shows a stopper 60 as another component that can be attached to the electric rotary earpick shown in FIG. As described above, the earpick 30 is provided with the stopper 35 for preventing excessive insertion into the ear canal. The position of the stopper 35 is set based on a standard depth to the eardrum of the ear canal. . Therefore, for example, when a person or a child with a short ear canal uses an electric rotary earpick, the safety is lacking.

  The stopper 60 shown in FIG. 5 is intended to ensure safety even when used by a person or child with a short ear canal. As shown in FIG. 5, the stopper 60 has a cylindrical shape having a substantially truncated cone shape, and a notch 61 is formed on the base end side thereof.

FIG. 6 shows a state in which the stopper 60 is attached to the electric rotary earpick shown in FIG. 1, and the notch 61 is aligned with the protruding step portion 11 b formed in the upper case 11 of the rotating device 10. The stopper 60 is attached by fitting. The distance L2 from the tip of the ear stick 30 to the stopper 60 is, for example,
L2 = 20mm
It is said. The outer diameter of the tip of the stopper 60 is larger than the diameter of the ear canal.

  As described above, the example in which the ear stick 30 and the toothbrush bar 50 are attached to the rotating device 10 as the rotating cleaner has been described. However, the rotating cleaner attached to the holder 22 of the rotating device 10 is not limited thereto. Examples of rotary cleaning tools include those for whitening teeth, for removing partial stains on fibers, and for cleaning gaps such as keyboards. Various instruments such as a vessel, a partial stain remover, and a gap cleaner can be configured.

DESCRIPTION OF SYMBOLS 10 Rotating device 11 Upper case 12 Lower case 13 Battery 14 Power switch 15 Motor 16 Gear box 21 Battery cap 22 Holder 23 Ball bearing 24 Packing 25 O-ring 26 Rubber seal 30 Ear stick 31 Shaft part 35, 36 Stopper 37 Locking piece 41 Earpick Part 42 screw part 50 toothbrush bar 51 shaft part 52 toothbrush part 60 stopper

Claims (5)

Case and
A power supply unit and a drive unit housed in the case;
A holder to which the shaft of the rotary cleaner is inserted and attached;
The holder is positioned at an opening formed at one end of the case and is driven to rotate by the driving unit.
A packing is provided between the holder and the case ,
The inner peripheral surface of the holder into which the shaft portion is inserted is a shape that matches the D-cut shape formed by the shaft portion,
A locking window that locks the locking piece formed on the shaft portion to prevent the rotary cleaner from coming off is formed at a tip side portion of the holder that protrudes outside from the opening . A rotating device for a rotary cleaning tool. The rotating device for a rotary cleaning tool according to claim 1,
The holder is supported by the case via a bearing;
A rotating device for a rotary cleaning tool, wherein a rubber seal is provided on an end surface of the bearing on the opening side. An earpick attached to the rotary device for a rotary cleaning tool according to claim 1 or 2,
And before Symbol shaft portion,
It consists of an earpick part formed by insert molding on the tip side of the shaft part,
The earpick part is made of a flexible material, the tip has a thin screw shape,
An ear stick characterized in that a flange-like stopper for preventing excessive insertion into the ear canal is formed on the shaft portion. The earpick according to claim 3.
The earpick is characterized in that the earpick part is made of rubber. The earpick according to claim 3 or 4,
The protrusion that constitutes the screw shape has a trapezoidal cross-sectional shape.

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