JP2009261514A - Hair dryer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hair dryer having improved durability of a click structure. <P>SOLUTION: The hair dryer is configured in a such a manner that the material of a projection 45 serving as a part to be engaged is different from the material of a base end side connection part 30 serving as a base end side portion to which a click receiving member 36 with the projection 45 is fixedly attached. Suitable materials can be selected for the part to be engaged and the base end side connection part 30 respectively, whereby the durability of a click structure can be improved more than that in the case where the part to be engaged is made of a material suitable for the base end side connection part 30. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a hair dryer.

  As a conventional hair dryer, the one disclosed in Patent Document 1 is known. In the hair dryer disclosed in Patent Document 1, a main body incorporating a blower and a heater and a grip serving as a grip portion are rotatably connected. On the main body side, a cylindrical bearing boss protrudes, and a ring-shaped click body provided with a pair of click protrusions on the outer peripheral surface of the boss is externally fitted. On the other hand, the grip is provided with an annular rib so as to surround the click protrusion, and a click engagement portion corresponding to the click protrusion is provided on the inner peripheral surface of the rib.

With such a configuration, when the grip is rotated, the click projection gets over the click engagement portion while bending the click body in the radial direction, and a click feeling is obtained.
JP-A-2-77207

  In Patent Document 1, the click engaging portion is integrally provided on the outer shell (housing) of the grip. In such a configuration, the resin material suitable for the outer shell is not necessarily optimal as the material of the click engagement portion that repeatedly generates stress each time the grip is rotated. May deteriorate with time, and the click feeling may gradually decrease.

  Then, an object of this invention is to obtain the hair dryer which can improve the durability of a click structure more.

  According to the first aspect of the present invention, there is provided a main body having a blower and a heating section, and a gripping part connected to the main body so as to be foldable, and the relative rotation is performed so that the gripping part can be folded. Either one of the base end side portion and the tip end side portion provided in a movable manner is provided with an engaging portion that protrudes and retracts elastically, and the other is an engaged portion that engages with the engaging portion. In a hair dryer that is fixedly provided so that the engagement state and the non-engagement state of the engagement portion and the engagement portion are switched as the grip portion rotates with respect to the body portion, the material of the engagement portion And the other material are different from each other.

  The invention according to claim 2 is characterized in that the engaged portion is made of a material having higher slidability than the other.

  The invention according to claim 3 is characterized in that the engaged portion is made of a crystalline plastic resin material.

  The invention according to claim 4 is characterized in that a click receiving member having a plurality of engaged portions is provided on the other side.

  The invention according to claim 5 is characterized in that a retaining portion for preventing the engaged portion from slipping out from the other side is provided on the other side.

  According to the first aspect of the present invention, it is possible to select a material more suitable as the engaged portion, so that the durability of the click structure is greater than when the engaged portion is integrally formed of a material suitable for the other. The sex can be further improved.

  According to invention of Claim 2, durability of a click structure can be improved more by improving the slidability of a to-be-engaged part.

  According to invention of Claim 3, durability of a click structure can be improved more by making a to-be-engaged part into a crystalline plastic resin material with comparatively high slidability.

  According to the invention of claim 4, since it becomes possible to attach a plurality of engaged parts at a time, productivity can be further improved.

  According to the invention of claim 5, the engaged portion can be more securely attached.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a side view showing the appearance of a hair dryer according to the present invention, and FIG. 2 is a side sectional view of the hair dryer.

  As shown in FIGS. 1 and 2, the hair dryer 1 according to the present embodiment includes a main body portion 2 and a handle portion 8. In the use state shown in FIG. 1 and FIG. 2, the main body 2 and the handle 8 have a substantially T-shaped appearance. The handle portion 8 is configured to be foldable by the connecting portion 11, and the handle portion 8 is in a posture along the main body portion 2 in a folded state (non-use state, storage state).

  The main body 2 has a housing 9 serving as an outer shell thereof. The housing 9 is formed in a substantially cylindrical shape by combining a divided body 10L and a divided body 10R that are divided in the direction of the rotation axis of the handle portion 8 (direction perpendicular to the paper surface of FIGS. 1 and 2).

  A suction port 5 for taking in outside air is formed at the end of one side (right side in FIGS. 1 and 2) in the longitudinal direction of the cylindrical portion of the main body 2 and the other end (left side in FIGS. 1 and 2). The part is formed with an air outlet 6 for blowing the air inside the main body to the outside, and an air flow path 12 extending from the suction port 5 to the air outlet 6 is formed inside the main body part 2.

  The air flow path 12 is provided with the blower unit 3, the rectifying unit 15, and the heating unit 4 from the upstream side. In the present embodiment, the filter unit 18 is disposed between the suction port 5 and the blower unit 3. Therefore, the air that flows into the cylinder of the main body 2 from the suction port 5 and passes through the filter unit 18 is blown by the blower 3, rectified by the rectifier 15, heated by the heating unit 4, and blown. It will blow out from the exit 6.

  The air blowing unit 3 includes an electric motor 16 and a fan 17 that is rotationally driven by the electric motor 16, and the air 17 is generated by rotating the fan 17 by the electric motor 16. To do. The operation of the electric motor 16 is controlled by a switch 8 a provided on the handle portion 8.

  The rectifying unit 15 includes a plurality of ribs 13 and rectifying blades 14. In the present embodiment, the electric motor 16 is fixed in the air flow path 12 using this rib 13.

  The heating unit 4 includes a heater (for example, a ceramic heater, not shown) accommodated in a substantially cylindrical holding frame 19. The heating unit 4 can be turned on and off with a switch 2 a provided on the main body 2. That is, it is possible to use the air flow as it is without heating.

  On the downstream side of the heating unit 4, the air flow is further accelerated by passing through the wind pressure nozzle 20, which is a space having a smaller diameter than the outlet 4 a on the other side in the longitudinal direction of the heating unit 4, The air is blown out from the air outlet 6. In addition, as shown in FIG. 2, in this embodiment, the flow rate of the air blown by the blower outlet 6a is further provided with the set nozzle 21 with which the end part of the other longitudinal direction of the main-body part 2 is detachably mounted. The diffusion range and the like are adjusted appropriately.

  An air flow path 12 a that branches an air flow from the air flow path 12 and introduces it into the mist generating section 22 is formed in the cylinder of the main body 2. Further, a mist discharge port 7 having substantially the same discharge direction as that of the air outlet 6 is formed at a position near the air outlet 6 (upper side in FIGS. 1 and 2) of the main body 2.

  In the present embodiment, the mist generation unit 22 includes an electrostatic atomization unit 23 that performs electrostatic atomization to generate atomized water droplets (mist), and a circuit unit that drives the electrostatic atomization unit 23. 24.

  The electrostatic atomizer 23 includes a discharge electrode, a ground electrode, and a Peltier element on the substrate 25a, and water droplets generated by condensation of moisture in the air by the Peltier element are applied between the discharge electrode and the ground electrode. It is atomized by applying a high voltage. The atomized mist is blown out from the mist discharge port 7. The circuit unit 24 includes a substrate 25b and a plurality of electronic components 26 mounted on the substrate. The circuit unit 24 generates a high voltage that acts on the electrostatic atomizing unit 23 and generates mist in the electrostatic atomizing unit 23. To control. Further, the mist generating unit 22 can switch the generation and stop of the mist with a switch 2 b provided in the main body unit 2.

  The handle portion 8 has a handle housing 8b as an outer shell thereof. The handle housing 8b is formed by combining a divided body 27L and a divided body 27R that are divided in the rotation axis direction of the handle portion 8 (the direction perpendicular to the paper surface of FIGS. 1 and 2). A power cord 29 is pulled out from the distal end portion of the handle portion 8 while being covered with a substantially cylindrical bushing 28.

  Moreover, in this embodiment, the handle | steering-wheel part 8 is comprised so that the front end side may be rotated centering | focusing on the connection part 11, and it may be folded. A base end side connecting portion 30 that is a base end side portion is provided on the main body 2 side of the connecting portion 11. Further, on the handle portion 8 side of the coupling portion 11, a distal end side coupling portion 31 that is a distal end portion is provided. Then, a screw is passed through the through hole 33 formed in the proximal end side connecting portion 30 and the through hole 42 formed in the distal end side connecting portion 31 so that the proximal end side connecting portion 30 and the distal end side connecting portion 31 are relative to each other. It is connected so that it can rotate.

  The hair dryer 1 according to the present embodiment is provided with a click structure that gives a click feeling in the folding operation of the handle portion 8. Hereinafter, the click structure will be described with reference to FIGS. 3 is a perspective view showing the click structure of the connecting portion provided in the main body portion of the hair dryer, FIG. 4 is an enlarged view of the housing recessed portion formed in the recessed portion of the proximal end side connecting portion, and FIG. FIG. 6 is a plan view of the hair dryer handle and the click body attached to the handle as seen from the axial direction of the rotation shaft.

  In the present embodiment, a click receiving member 36 having a protrusion 45 as an engaged portion protruding in the radial inward direction of the rotation axis A is attached to the proximal end side connecting portion 30, while When the click body 44 having a projection 44c as an engaging portion protruding in the radially outward direction of the moving shaft A is attached and the base end side connecting portion 30 and the distal end side connecting portion 31 are relatively rotated, these protrusions are Can get a sense of click by getting over each other.

  As shown in FIG. 3, the proximal end side connecting portion 30 is formed with a substantially annular annular recess 35 that accommodates a substantially ring-shaped click body 44, and the annular recess 35 serves as a side surface in the radially outward direction. A plurality of protrusions 45 projecting in the radially inward direction are formed on the inner peripheral surface 32a. On the side where the handle portion 8 is connected to the annular recess 35 (the tip end side of the handle portion 8, the lower side in FIG. 3), a rib wall 41 extending in an arc shape with a substantially constant width is provided. Of the plurality of protrusions 45, the protrusion 41a provided on the rib wall 41 is formed as a protrusion 41a in which the rib wall 41 itself protrudes in the radially inward direction. Three protrusions 45 a, 45 b, 45 c provided other than the rib wall 41 are provided on the click receiving member 36.

  As shown in FIG. 4, the click receiving member 36 includes a belt-like portion 37 extending substantially along an arc centered on the rotation axis A, and a plurality of (three in this embodiment) extending radially outward from the belt-like portion 37. ) Arm portion 37b and a columnar portion 37c erected in the direction of the rotation axis A on the distal end side of the arm portion 37b. A protrusion (projection) 38a having a substantially arch-shaped cross section is formed in a portion of the columnar portion 37c that is on the inner side of the rotation axis A.

  A substantially arc-shaped accommodation recess 35b corresponding to the belt-like portion 37 is formed on the bottom surface 35a of the annular recess 35, and the belt-like portion 37 is fitted into this accommodation recess 35b.

  As shown in FIG. 5, the inner circumferential surface 32 a of the annular concave portion 35 is formed with a concave groove-shaped accommodation concave portion 32 </ b> A corresponding to the base portion 37 e on the outer side of the rotation axis A. The base part 37e is inserted in 32A. Engaging convex portions 32f, 32e, and 32g are formed on the bottom surface 32b and the side surfaces 32c and 32d, respectively, of the accommodating recess 32A, and the engaging convex portions are respectively formed on the bottom surface 38b and the side surface 38c of the base portion 37e. Engaging recesses 38f, 38e, 38g corresponding to the portions 32f, 32d, 32g are provided. In such a configuration, the engaging convex portion 32f provided on the bottom surface 32b of the accommodating concave portion 32A functions as a retaining member for the columnar portion 37c in the circumferential direction of the rotating shaft A, and is provided on the side surface of the accommodating concave portion 32A. The joint protrusions 32e and 32g function as a stopper for the columnar portion 37c in the radially inward direction. Further, by adjusting the height of the engaging protrusion 32f, the thickness of the protrusions 45a, 45b, 45c is changed, and the elastic force when the protrusion 44c gets over the protrusions 45a, 45b, 45c, that is, the strong click feeling. Can be changed. The height of the engaging protrusion 32f can be adjusted relatively easily by the depth of the recess corresponding to the engaging protrusion of the mold during resin molding.

  A boss 34 as a bearing formed in a substantially cylindrical shape is provided at the center of the annular recess 35 (see FIG. 3). In the cylinder of the boss 34, a through hole 33 is formed that penetrates a bolt that connects the handle portion 8 to the main body portion 2. In addition, a pair of substantially fan-shaped protrusions 34 a are provided on the outer peripheral surface of the boss 34 when viewed in the axial direction.

  The click body 44 accommodated in the annular recess 35 is attached to the distal end side connecting portion 31. As shown in FIG. 6, the distal end side connecting portion 31 is provided with an abutting surface 31a that abuts against the abutting surface 30a (see FIG. 3) of the proximal end side connecting portion 30 in the assembled state. A pair of substantially fan-shaped protrusions 43a are provided on the abutting surface 31a in an axial view, and a substantially ring-shaped click body 44 is externally fitted to surround the protrusions 43a from the outside in the radial direction of the rotating shaft A. The A fitting recess 43b is formed on the outer peripheral surface of the protrusion 43a, and a fitting protrusion 44b that protrudes inward from the ring-shaped base 44a of the click body 44 is fitted into the fitting recess 43b. In addition, a through hole 42 through which a screw passes is formed together with the through hole 33 at a substantially central portion of the abutting surface 31a.

  The click body 44 is provided with a protrusion 44c that protrudes from the base portion 44a toward the outside of the diameter. In the present embodiment, the protrusions 44 c are provided at two positions that are symmetrical about the rotation axis A, that is, every 180 ° along the circumferential direction of the rotation axis A.

  With the above configuration, when the base end side connecting portion 30 and the tip end side connecting portion 31 are assembled, the click body 44 attached to the tip end side connecting portion 31 is accommodated in the annular recess 35 of the base end side connecting portion 30. . When the handle portion 8 is rotated, the protrusion 44c as the engaging portion and the protrusion 45 as the engaged portion are engaged, and when the handle portion 8 is further rotated, the protrusion 44c pressed by the protrusion 45 is elastic inward in the diameter. Thus, the projections 44c and 45 get over each other and a click feeling is obtained. The protrusion 44c of the click body 44 is immersed by elastically deforming so that the ring-shaped base portion 44a is crunched. A pair of protrusions 32 h are provided on the inner circumferential surface 32 a of the annular recess 35 so as to protrude radially inward at positions symmetrical with respect to the rotation axis A apart from the protrusion 45 as the engaged part. Yes. When the ring-shaped base portion 44a of the click body 44 is deformed, these protrusions 32h come into contact with the outer peripheral surface 44e of the base portion 44a and bulge outward from the diameter of the base portion 44a, that is, the click body 44 is excessive. Regulate deformation.

  Next, operations of the click body and the click receiving member when the handle is rotated will be described with reference to FIGS. FIG. 7 is a plan view of the state in which only the click body is accommodated in the base end side connecting portion as seen from the axial direction of the rotation shaft, and shows the state in which the handle is extended, and FIG. 9 is the base end side connecting portion. FIG. 8 is a plan view of the state in which only the click body is accommodated as viewed from the axial direction of the rotation shaft, and shows the state in which the handle is folded. FIG. FIG. 10 is a plan view seen from the axial direction of the rotation shaft, and shows a state where the handle is at an intermediate position between FIG. 7 and FIG. 9.

  When the handle 8 is rotated with respect to the main body 2 from the state shown in FIG. 7, the protrusions 44c and 44c of the click body 44 get over the protrusions 45a and 45c of the click receiving member 36, and the state shown in FIG. Become. When the handle portion 8 is rotated with respect to the main body portion 2 from the state shown in FIG. 8, the protrusions 44 c and 44 c of the click body 44 get over the protrusion 45 b of the click receiving member 36 and the protrusion 41 a of the rib wall 41. The state shown in FIG.

  In this embodiment, with respect to the pair of protrusions 44c and 44c provided on the click body 44, a pair of protrusions 45a and 45c arranged symmetrically about the rotation axis A in the click receiving member 36, and another pair of protrusions 45b. And the protrusion 41a of the rib wall 41 correspond to each other. In this way, the pressing force at the time of getting over the click body 44 and the click receiving member 36 can be canceled by acting symmetrically about the rotation axis A, and the protrusions 44c and 45 at the time of getting over can be offset. It is possible to suppress the radial force from acting on the proximal end side connecting portion 30 or the distal end side connecting portion 31 by the pressing force.

  Of the protrusions 45 of the click receiving member 36, the pair of protrusions 45 a and 45 c function as protrusions 45 a and 45 c that hold the extended state of the handle portion 8, and the other pair of protrusions 45 b and 41 a are in the folded state of the handle portion 8. Protrusions 45b and 41a for holding

  Here, in the present embodiment, the base end side connecting portion 30 and the click receiving member 36 are made of different materials, and in particular, the click receiving member 36 is made of a material having higher slidability than the material of the base end side connecting portion 30. It is configured. Specifically, for example, the base end side connecting portion 30 (housing 9) is made of an amorphous plastic material such as acrylonitrile butadiene styrene (ABS) or polycarbonate (PC), and the click receiving member 36 is made of polyamide (PA), A crystalline plastic material such as polyacetal (POM), polyethylene terephthalate (PET), or polyphenylene sulfide (PPS) is used. The material of the base end side connecting portion 30 is preferable in terms of heat resistance, flame retardancy, and aesthetics, and the material of the click receiving member 36 is preferable in terms of slidability and rigidity.

  As described above, in this embodiment, the material of the projection 45 as the engaged portion and the base end side connecting portion as the base end side portion to which the click receiving member 36 having the projection 45 is fixedly attached. Different from 30 materials. Therefore, a material having properties such as heat resistance, flame retardancy, and excellent surface aesthetics required for the outer shell (housing) can be selected for the base end side connecting portion 30 formed integrally with the housing 9. For the click receiving member 36, a material having an effective property against repeatedly generated stress can be selected. In other words, it is possible to select a suitable material for the engaged portion and the base end side connecting portion 30, and it is possible to click rather than configuring the engaged portion with a material suitable for the base end side connecting portion 30. The durability of the structure can be further improved.

  In the present embodiment, the protrusion 45 is made of a material having a higher slidability than the proximal end side connecting portion 30. Therefore, stress concentration on the click receiving member 36 can be suppressed, and the durability of the click structure can be further improved.

  In the present embodiment, the protrusion 45 is made of a crystalline plastic resin material. Therefore, the stress concentration on the click receiving member 36 can be suppressed, and the durability of the click structure can be further improved.

  In the present embodiment, the click receiving member 36 having the plurality of protrusions 45 is provided. Therefore, it becomes possible to attach several protrusion 45 at once, and productivity can be improved more.

  In the present embodiment, the base portion 37e is provided as a retaining member that prevents the protrusion 45 from slipping out of the base end side connecting portion 30. Therefore, the click receiving member 36 which is the engaged portion can be firmly attached to the proximal end side connecting portion 30.

  Further, in the present embodiment, among the plurality of protrusions 45 provided on the proximal end side connecting portion 30, the protrusion 41 a disposed on the distal end side is provided on the rib wall 41, and the protrusion 41 a provided on the rib wall 41 is the proximal end. The same material was used as a part of the side connecting portion 30. Therefore, the protrusion 45 (41a) can be provided also in the location where the radial thickness cannot be secured to form the accommodating recess 32A into which the click receiving member 36 is inserted. That is, the structure of the connection part 11 can be reduced in size.

  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, in the above embodiment, the example in which the engaged portion and the portion to which the engaged portion is fixedly attached is described as separate parts, but the portion to be engaged and the portion to which the engaged portion is fixedly attached is formed in two colors. Depending on, the material may be different.

  Moreover, as shown in FIG. 2, in the said embodiment, about the mist generating part 22 incorporated in the main-body part 2, the board | substrate 25a which attaches the electrostatic atomization part 23 which performs an electrostatic atomization effect | action, and electrostatic fog Although the substrate 25b on which the electronic component 26 that drives the conversion unit 23 is mounted is formed separately, the electrostatic atomization unit 23 and the electronic component 26 are mounted on a single substrate 25 as shown in FIG. May be.

It is a side view showing the external appearance of the hair dryer concerning one Embodiment of this invention. It is a sectional side view of the hair dryer concerning one Embodiment of this invention. It is a perspective view showing the click structure of the connection part provided in the main-body part of the hair dryer concerning one Embodiment of this invention. It is a top view showing the click receiving member contained in the hair dryer concerning one Embodiment of this invention. It is an enlarged view of the accommodation recessed part formed in the recessed part of the base end side connection part contained in the hair dryer concerning one Embodiment of this invention. It is the top view which looked at the click body attached to the handle of the hair dryer concerning one Embodiment of this invention, and the handle from the axial direction of the rotating shaft. It is the top view which looked at the state which accommodated only the click body in the base end side connection part contained in the hair dryer concerning one Embodiment of this invention from the axial direction of the rotating shaft, and is a figure which shows the state which the handle extended. . It is the top view which looked at the state which accommodated only the click body in the base end side connection part contained in the hair dryer concerning one embodiment of the present invention from the direction of an axis of a rotation axis, and a handle is shown in Drawing 7 and Drawing 9. It is a figure which shows the state in an intermediate position. It is the top view which looked at the state which accommodated only the click body in the base end side connection part contained in the hair dryer concerning one embodiment of the present invention from the direction of an axis of a rotation axis, and is a figure showing the state where a handle was folded up. . It is a disassembled perspective view showing the modification of the hair dryer concerning one Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hair dryer 2 Main-body part 3 Blower part 4 Heating part 8 Handle part (gripping part)
DESCRIPTION OF SYMBOLS 11 Connection part 30 Base end side connection part 31 Front end side connection part 32f Engagement convex part (detachment prevention part)
32e Engaging convex part (preventing part)
32g Engaging convex part (preventing part)
36 click receiving member 41 rib wall 41a protrusion (engaged portion)
44 Click body 44c Protrusion (engagement part)
45 Protrusion (engaged part)
45a Protrusion (engaged part)
45b Protrusion (engaged part)
45c Protrusion (engaged part)

Claims (5)

A base part having a main body part having a blower part and a heating part, and a gripping part connected to the main body part so as to be foldable, and provided so as to be relatively rotatable so that the gripping part can be folded; Either one of the distal end side portions is provided with an engaging portion that elastically protrudes and retracts, and on the other side, an engaged portion that engages with the engaging portion is fixedly provided, and the main body of the gripping portion In the hair dryer in which the engagement state and the non-engagement state of the engagement portion and the engaged portion are switched with the rotation with respect to the portion,
A hair dryer characterized in that the material of the engaged portion is made different from the other material.   The hair dryer according to claim 1, wherein the engaged portion is made of a material having higher slidability than the other.   The hair dryer according to claim 1 or 2, wherein the engaged portion is made of a crystalline plastic resin material.   The hair dryer according to any one of claims 1 to 3, wherein a click receiving member having a plurality of engaged portions is provided on the other side.   The hair dryer according to any one of claims 1 to 4, wherein a retaining portion for preventing the engaged portion from slipping out from the other is provided on the other side.

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