JP5009853B2 - Hair care equipment - Google Patents

Description

  The present invention relates to a hair care device.

As a conventional hair care device, one disclosed in Patent Document 1 is known. In Patent Document 1, a bushing for covering the power cord is provided at a portion where the power cord is pulled out, and an adherent piece for partially closing the inside of the bushing is provided at the tip portion. Thereby, when the power cord is bent and disconnected, the spark generated at the disconnected portion is prevented from leaking out of the bushing.
JP 2002-369714 A

  The hair dryer disclosed in Patent Document 1 has a configuration mainly corresponding to disconnection due to bending of a power cord.

  As a result of further investigations on suppression of spark leakage from the bushing cylinder, the inventors have been able to more effectively suppress spark leakage when the power cord is twisted and disconnected. I found a simple structure.

  That is, an object of the present invention is to obtain a hair care device that can more effectively suppress the spark generated when the power cord is twisted and disconnected from the inside of the bushing cylinder.

In the invention of claim 1, a hair care device in which a portion of a power cord that supplies power to a built-in electrical component is covered with a cylindrical bushing, and a proximal end side of the bushing is fixed to the casing. In the above bushing, a twist restricting portion for restricting the twist of the power cord is provided in the bushing, and by controlling the twist of the power cord by the twist restricting portion, a disconnection scheduled portion due to the twist of the power cord is set in the bushing cylinder, A spark attenuating portion for attenuating a spark generated in the cylinder due to a disconnection of the power cord at the planned disconnection portion is provided in a portion on the tip side of the twist regulating portion in the bushing cylinder, and the bushing cylinder comprising a tube covering the power cord, by the tube, that the cylinder was closed at the distal end than the expected disconnection portion And butterflies.

  The invention according to claim 2 is characterized in that the torsion restricting portion is provided as a portion in which the clearance between the bushing and the power cord in the bushing cylinder is narrower than the spark attenuating portion.

  The invention according to claim 3 is characterized in that the clearance is gradually increased from the twist restricting portion to the spark attenuating portion.

According to a fourth aspect of the present invention, the tube is a heat shrinkable tube attached to a power cord.

In the invention of claim 5, a thermal contraction region is provided on the distal end side of the tube, an expansion region that is not contracted is provided on the proximal end side of the tube, and a boundary portion between the thermal contraction region and the expansion region is disconnected. It arrange | positions at the front-end | tip part side rather than the plan part, and the inside of the bushing cylinder is obstruct | occluded by the said boundary part.

According to the invention of claim 1, by providing the twist restricting portion, the breakage position due to the twist of the power cord is defined in the bushing cylinder, and the spark generated at the breakage position is more securely weakened by the spark attenuation portion. The spark can be prevented from leaking out of the cylinder from the front end side of the bushing. That is, with a relatively simple configuration, it is possible to suppress a spark generated when the power cord is twisted and disconnected from leaking out of the bushing cylinder. In addition, since the tube serves as a spark barrier in the bushing cylinder, it is possible to more reliably prevent the spark from leaking from the tip of the bushing to the outside of the cylinder.

  According to the second aspect of the present invention, since the amount of twist of the power cord in the bushing cylinder is regulated by setting the clearance, the twist restricting portion can be obtained with a relatively simple configuration.

  According to the third aspect of the present invention, the spark generated in the disconnection scheduled portion is likely to enter the torsion restricting portion side, that is, the proximal end portion side in the bushing cylinder, and the spark is correspondingly on the distal end portion side of the bushing. From the outside of the cylinder can be further suppressed.

According to invention of Claim 4 , the said tube can be equipped comparatively easily.

According to the invention of claim 5, since the inside of the bushing cylinder is closed on the tip side from the planned disconnection portion by the tube, it is further more reliably prevented that the spark leaks out of the cylinder from the opening portion on the tip side of the bushing. can do.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that similar components are included in the following embodiments. Therefore, below, the same code | symbol is provided about these similar components, and the overlapping description is abbreviate | omitted.

  (First Embodiment) FIG. 1 is a cross-sectional view of a hair dryer as a hair care device according to this embodiment, and FIG. 2 is an enlarged view of a bushing mounting portion of FIG.

  As shown in FIG. 1, a hair dryer 1 as a hair care device according to the present embodiment has a shape in which a main body 2 and a handle 3 are joined in a substantially T-shape. The handle portion 3 can be folded with the rotating portion R as a bending base point. FIG. 1 shows a state in which the handle portion 3 is extended.

  The casing 2a of the main body portion 2 is formed in a substantially cylindrical shape by abutting the right and left divided bodies having a substantially arched cross section. An air passage 4 extending from the intake port 4a to the blowout port 4b is formed in the cylinder of the casing 2a. In the air passage 4, an electric motor 5 and an axial fan 6 driven by the electric motor 5 are provided. By rotating the axial fan 6 by the electric motor 5, air is sucked into the air passage 4. An air flow from the mouth 4a to the outlet 4b is generated.

  In addition, a heater 8 is provided on the downstream side of the air passage 4 so that heated warm air can be blown out from the outlet 4b. Furthermore, the mist generating part 7 by electrostatic atomization is provided, and the atomized mist can be discharged | emitted from the mist discharge port 7a.

  The handle casing 3a of the handle portion 3 is formed by abutting divided bodies having a substantially arched cross section and having different left and right sides. A lead wire 10b is routed in the handle casing 3a. Further, an operation switch 9 is provided at the middle portion in the longitudinal direction of the handle portion 3.

  In the above configuration, the electric motor 5, the mist generating unit 7, and the heater 8 correspond to electrical components that operate with supplied power. Electric power is supplied to these electrical components via the lead wire 10b. The inner conductor of the lead wire 10 b is electrically connected to the inner conductor of the lead wire 10 a constituting the power cord 10. In the present embodiment, the power cord 10 has a flat shape in which two lead wires 10a are arranged adjacent to each other and coupled.

  In the present embodiment, the power cord 10 is pulled out from the through hole 3 b formed in the handle casing 3 a at the tip of the handle portion 3, and the portion to be pulled out is covered with the bushing 11.

  The bushing 11 is formed by molding an insulating resin material into an elongated cylindrical shape. The in-cylinder 11a has a flat (for example, a substantially rectangular tube shape or a substantially oval shape) cross section corresponding to the cross-sectional shape of the power cord 10, and the power cord 10 is inserted into the in-cylinder 11a. . In addition, the outer periphery of the bushing 11 on the front end side in the longitudinal direction is provided with a concavo-convex shape 11b to improve flexibility and aesthetics.

  The base end side of the bushing 11 is accommodated in the handle casing 3a, and a pair of substantially disk-shaped overhanging portions 11c is provided in the accommodated portion with the cylinder 11a interposed therebetween. A through hole 11d is formed in a substantially central portion of the overhang portion 11c. The handle casing 3a is provided with a cylindrical protrusion 3d. The bushing 11 is fixed to the handle casing 3a by fitting the protrusion 3d into the through hole 11d. A power bushing 11 and a bushing 11 covering the power cord 10 are also passed through a through hole 3b provided at the tip of the handle portion 3.

  Each lead wire 10a of the power cord 10 is sandwiched by a pair of mutually opposing ribs 3c (only one rib 3c is shown in FIG. 2) provided on each divided body of the handle casing 3a. Thus, the power cord 10 is fixed to the handle casing 3a.

  Further, a substantially disc-shaped ring portion 11e having a through hole 11f protrudes from a portion of the bushing 11 outside the handle casing 3a on the base end side.

  Here, in the present embodiment, the bushing 11 is provided with a twist restricting portion A1 that restricts the twist of the power cord 10. In the present embodiment, on the proximal end side in the longitudinal direction of the bushing 11, the clearance w1 between the bushing 11 and the power cord 10 in the cylinder 11a is made smaller than the clearance w2 of the region (spark attenuation portion A2) on the distal end side. The twist amount of the power cord 10 in the cylinder 11a is reduced.

  And by providing the twist restricting portion A1 in this way, the planned disconnection portion A3 of the power cord 10 is set on the distal end side in the longitudinal direction. That is, when the power cord 10 is largely twisted, the twist of the power cord 10 is restricted at the twist restricting portion A1, so that the power cord 10 has a twist breaking limit at a position adjacent to the tip side from the twist restricting portion A1. It will exceed. The position and section length of the planned disconnection portion A3 can be adjusted based on the maximum twist angle in the twist restricting portion A1, the twist breaking limit angle of the coating of the power cord 10, and the like.

  Furthermore, in the present embodiment, a spark attenuating portion A2 having a required length is provided on the tip side from the twist restricting portion A1. The spark attenuating portion A2 attenuates and extinguishes the spark S generated at the disconnection position B of the power cord 10 before reaching the opening 11g on the distal end side by mainly natural cooling. In the spark attenuating portion A2, the clearance w2 between the bushing 11 and the power cord 10 in the cylinder 11a is set larger than the clearance w1 of the torsion restricting portion A1.

  In this embodiment, the clearance between the bushing 11 and the power cord 10 in the cylinder 11a of the bushing 11 is gradually increased from the twist restricting portion A1 to the spark attenuation portion A2. That is, in the present embodiment, as described above, the clearance w2 in the spark attenuating portion A2 is set larger than the clearance w1 in the torsion restricting portion A1, but when changing the clearance in this way, a sudden change portion such as a step is provided. It is made to change gradually smoothly without providing. Here, if a step or the like is formed between the twist restricting portion A1 and the spark attenuating portion A2, the step becomes a barrier against the spark S generated in the planned disconnection portion A3, and the spark S is the disconnection position. From B, it becomes difficult to advance to the proximal end side of the cylinder 11a of the bushing 11, that is, inside the handle casing 3a, and accordingly, the probability that the spark S proceeds to the distal end side of the cylinder 11a of the bushing 11 may increase. . In this regard, according to the present embodiment, since such a barrier is not formed, the spark S can enter the base end side of the cylinder 11a of the bushing 11 relatively smoothly. Accordingly, it is possible to further suppress the spark S from leaking out of the cylinder from the tip end side of the cylinder 11 a of the bushing 11. The clearance may be gradually increased from the base end to the tip end in the cylinder 11a of the bushing 11, and the clearance of the cylinder 11a (that is, the cylinder inner diameter) is substantially reduced in the region serving as the twist restricting portion A1. The clearance (that is, the inner diameter of the cylinder) may be gradually increased from the end on the front end side in the longitudinal direction of the twist restricting portion A1 to the front end side.

  As described above, in the present embodiment, the bushing 11 is provided with the twist restricting portion A1 that restricts the twist of the power cord 10, and the twist restricting portion A1 restricts the twist of the power cord 10 so that the bushing 11 A disconnection scheduled portion A3 due to the twist of the power cord 10 is set in the cylinder 11a, and the power cord 10 is disconnected at the planned disconnection portion A3 at a portion of the bushing 11 on the tip side from the twist restricting portion A1 of the cylinder 11a. A spark attenuating portion A2 for attenuating the spark S generated inside is provided. That is, by providing the twist restricting portion A1, the disconnection position B due to the twist of the power cord 10 is defined in the cylinder 11a of the bushing 11, and the spark S generated at the disconnection position B is more reliably weakened by the spark attenuation portion A2. Thus, the spark S can be prevented from leaking out of the cylinder from the tip end side of the cylinder 11 a of the bushing 11. That is, it is possible to suppress the spark S generated when the power cord 10 is twisted and disconnected from leaking out of the cylinder 11 a of the bushing 11 with a relatively simple configuration.

  Further, in the present embodiment, the twist restricting portion A1 is provided as a portion where the clearance between the bushing 11 and the power cord 10 in the cylinder 11a of the bushing 11 is narrower than the spark attenuation portion A2 (w1 <w2). That is, since the twist amount of the power cord 10 in the cylinder 11a of the bushing 11 is regulated by setting the clearance, the twist restricting portion A1 can be obtained with a relatively simple configuration.

  In this embodiment, the clearance is gradually increased from the twist restricting portion A1 to the spark attenuation portion A2. Therefore, the spark S generated at the planned disconnection portion A3 is more likely to enter the twist regulating portion A1 side, that is, the proximal end portion side of the cylinder 11a of the bushing 11, and accordingly, the spark S is the distal end portion of the bushing 11. It is possible to further suppress leakage from the side to the outside of the cylinder.

  (Second Embodiment) FIG. 3 is a sectional view of a portion provided with a bushing of a hair dryer as a hair care device according to this embodiment.

  In the hair dryer 1 </ b> A according to the present embodiment, the power cord 10 covered with the tube 12 is inserted into the bushing 11, and this point is different from the first embodiment. Specifically, the tube 12 is a heat-shrinkable tube that is heated and shrunk, and is provided with a heat-shrinkable region 12a on the distal end side (longitudinal distal end side of the bushing 11), but does not shrink on the proximal end side. In a state where the region 12b is provided and is inserted into the bushing 11 and assembled, the boundary portion 12c between the heat shrink region 12a and the expansion region 12b is disposed on the tip side from the planned disconnection portion A3. At this time, in the expansion region 12b, the outer diameter of the expansion region 12b (that is, the diameter of the tube 12 before thermal contraction) is set to the inner diameter of the cylinder 11a of the bushing 11 so as to be in close contact with the inner wall surface of the cylinder 11a of the bushing 11. Thus, the cylinder interior 11a of the bushing 11 is closed by the boundary portion 12c.

  Accordingly, the spark S generated at the disconnection position B cannot be advanced to the distal end side from the boundary portion 12c because the boundary portion 12c serves as a barrier, and the region 11h (expansion region) from the boundary portion 12c of the tube 12 to the proximal end side. 12b and the outside of the power cord 10).

  That is, according to the present embodiment, the tube 12 closes the in-cylinder 11a of the bushing 11 on the distal end side from the planned disconnection portion A3, so that the spark S leaks out of the cylinder from the opening 11g on the distal end side of the bushing 11. Can be more reliably suppressed. Even in such a configuration, it is preferable to provide the spark attenuating portion A2. However, even when the spark attenuating portion A2 is not provided, the effect of being blocked by the boundary portion 12c can be obtained.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above embodiments, and various modifications can be made. For example, the present invention can be implemented as various hair care devices shown in FIGS.

  The hair dryer 1 </ b> B with a brush in FIG. 4 is provided with a brush 14 having a bristle 14 a at the tip of the main body 13. And the blower outlet 14b which blows off warm air or cold wind is formed in the brush 14. As shown in FIG. This hair dryer 1B with a brush incorporates an electric motor for driving a fan, a heater and the like (not shown) as electric parts, and in a portion for pulling out the power cord 10 for supplying power to them from the casing of the main body part 13, A bushing 11 and a tube 12 similar to those in the second embodiment are provided.

  The hair iron 1 </ b> C in FIG. 5 is provided with heating and clamping portions 16 </ b> A and 16 </ b> B at the distal end portion of the main body portion 15. This hair iron 1C has a built-in heater or the like (not shown) as an electrical component, and a bushing similar to that of the second embodiment is provided at a portion where the power cord 10 for supplying electric power is pulled out from the casing of the main body 15. 11 and tube 12 are equipped.

  The hair brush 1D of FIG. 6 is provided with a brush 18 having a bristle 18a at the tip of the main body portion 17. This hairbrush 1D incorporates an electric motor or heater for hair cutters (none of which is shown) as an electrical component, and the power cord 10 for supplying power to them is pulled out from the casing of the main body portion 17 at the portion described above. The same bushing 11 and tube 12 as in the second embodiment are provided.

  4 to 6, only the bushing 11 according to the first embodiment (no tube) can be applied instead of the bushing 11 and the tube 12 according to the second embodiment. Of course.

  Further, the specifications of the bushing, the tube, and the power cord to which these are applied are not limited to the above embodiment, and the present invention can be applied to various types. Moreover, you may provide the rib etc. which prevent a twist as a twist control part.

  Further, in the bushing cylinder, the clearance between the power cord and the bushing may be larger than the clearance of the twist restricting portion on the base end side (handle portion side) from the twist restricting portion. Thereby, it is possible to easily advance the spark toward the base end side.

  It can be easily understood that each of the above-disclosed configurations functions effectively against a spark caused by a break due to bending of the power cord.

It is sectional drawing of the hair dryer as a hair care apparatus concerning 1st embodiment of this invention. It is the figure which expanded the bushing mounting part of FIG. It is sectional drawing of the part which provided the bushing of the hair dryer as a hair care apparatus concerning 2nd embodiment of this invention. It is a figure (partial cross section figure) which shows the hair dryer with a brush as a hair care apparatus concerning the modification of 2nd embodiment of this invention. It is a figure (partial cross section figure) which shows the hair iron as a hair care apparatus concerning the modification of 2nd embodiment of this invention. It is a figure (partial cross section figure) which shows the hairbrush as a hair care apparatus concerning the modification of 2nd embodiment of this invention.

Explanation of symbols

A1 Twist restriction part A2 Spark attenuation part A3 Disconnection scheduled part B Disconnection position S Spark w1 Clearance of twist restriction part w2 Clearance of spark attenuation part 1, 1A Hair dryer (hair care device)
1B Hair dryer with brush (hair care device)
1C hair iron (hair care device)
1D hair brush (hair care device)
3a Handle casing (casing)
5 Electric motor (electric parts)
7 Mist generator (electrical parts)
8 Heater (electric parts)
10 Power cord 11 Bushing 11a In-cylinder 12 Tube

Claims (5)

In a hair care device in which a portion of a power cord that supplies power to a built-in electrical component is covered with a cylindrical bushing and a base end side of the bushing is fixed to the casing.
The bushing is provided with a twist restricting portion that restricts the twist of the power cord, and by restricting the twist of the power cord by the twist restricting portion, a disconnection scheduled portion due to the twist of the power cord is set in the bushing cylinder,
A spark attenuating part for attenuating a spark generated in the cylinder due to a disconnection of the power cord at the scheduled disconnection part is provided in a portion on the tip side of the twist restricting part in the cylinder of the bushing ,
A tube covering the power cord in the bushing cylinder;
A hair care device characterized in that the tube closes the inside of the cylinder in the vicinity of the planned disconnection portion and at the distal end side .   The hair care device according to claim 1, wherein the twist restricting portion is provided as a portion where a clearance between the bushing and the power cord in the bushing cylinder is narrower than the spark attenuating portion.   The hair care device according to claim 2, wherein the clearance is gradually increased from the twist restricting portion to the spark attenuating portion. The hair care device according to claim 1, wherein the tube is a heat shrinkable tube attached to a power cord. Provide a heat shrink region on the distal end side of the tube, provide an expansion region that does not shrink on the proximal end side of the tube,
5. The hair according to claim 4, wherein a boundary portion between the heat shrink region and the expansion region is disposed closer to a distal end side than a planned disconnection portion, and the inside of the bushing is blocked by the boundary portion. Care equipment.

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