JP5258369B2 - Hair dryer - Google Patents

Description

  The present invention relates to a hair dryer.

  2. Description of the Related Art Conventionally, a hair dryer is known in which an air passage extending from a suction port to a blowout port is formed in a main body portion, and a filter unit is detachably attached to the suction port side of the main body portion (for example, Patent Document 1).

In this type of hair dryer, a protrusion is provided on one of the main body and the filter unit, and a recess for receiving the protrusion is provided on the other. It is supposed to be attached to.
JP-A-6-46919

  However, in the configuration for fitting the concave and convex portions, the protrusion is provided integrally with the general portion of either the main body portion or the filter unit (the one provided with the protrusion). In such a configuration, the material suitable as the general portion However, it is not always optimal as a material for the protrusion that repeatedly generates stress each time the filter unit is attached to or detached from the main body, and the protrusion deteriorates with time due to repeated use over many years, and the main body due to the engagement between the protrusion and the recess. In some cases, the bonding force between the filter unit and the filter unit gradually decreases.

  Then, an object of this invention is to obtain the hair dryer which can improve the durability of the engagement structure used for attaching a filter unit to a main-body part so that attachment or detachment is possible.

In the invention of claim 1, in the hair dryer in which an air passage extending from the inlet to the outlet is formed in the main body, and the filter unit is detachably attached to the inlet of the main body, the filter unit of the main body The mounting portion is provided with a protrusion that protrudes elastically in a direction that intersects the mounting direction of the filter unit as a separate member from the surface thereof, and a receiving portion that receives the protrusion is provided in the main body mounting portion of the filter unit. The protrusion is composed of an attachment for attaching to the filter unit attachment portion and a protrusion received in the receiving portion. The attachment is formed in a band plate shape, and the central portion in the longitudinal direction is substantially C-shaped. It is provided with a belt-shaped portion that is bent and elastically deformable, and hook portions are provided at both ends in the longitudinal direction to form a substantially Ω-shape, and the protrusion is formed at a substantially central portion in the longitudinal direction of the belt-shaped portion. The filter unit mounting portion is formed in a double cylindrical shape including an outer cylindrical portion and an inner cylindrical portion, and the mounting tool includes the outer cylindrical portion and the inner cylindrical portion. A belt-like portion is attached between the outer cylindrical portion and the outer cylindrical portion so as to be elastically deformable, and a slit-like through hole is formed in the outer cylindrical portion so as to protrude outward from the surface of the outer cylindrical portion. The protrusion is made of a material having a higher slidability than the material of the filter unit mounting portion.

  In the invention of claim 2, inclined surfaces are respectively formed on the front side and the back side of the projection in the mounting direction, and the receiving unit is mounted when the filter unit is mounted on the two inclined surfaces. The inclined surface on the side close to the part is inclined more gently with respect to the mounting direction than the inclined surface on the opposite side.

The invention of claim 3 is characterized in that the protrusion is made of a crystalline plastic resin material.

In the invention of Claim 4, it is between the outer cylindrical portion and the inner cylindrical portion, in the circumferential direction on both sides of the through hole is provided with a pair of ribs, the fitting to the rib characterized in that the formation of the second through-hole for receiving the hook portion for attachment to the filter unit mounting portion.

According to the invention of claim 1, since it is possible to select a more suitable material for the protrusion, the durability of the engagement structure compared to a case where the protrusion is integrally formed with a material suitable for the filter unit mounting portion. Can be further improved. In addition, since the protruding portion is provided at a substantially central portion in the longitudinal direction of the band-shaped portion so as to protrude outward from the band-shaped portion, the number of components is reduced and assembled as compared with the case where these are configured as separate components. Workability can be improved. Furthermore, the durability of the engagement structure can be further improved by configuring the material of the protrusions with a material that is more slidable than the material of the filter unit mounting portion .

  According to invention of Claim 2, the force required when mounting | wearing with a filter unit can be made comparatively small, and the force required when removing a filter unit can be made comparatively large.

According to the invention of claim 3 , the durability of the engaging structure can be further improved by using the crystalline plastic resin material having a relatively high slidability as the protrusion.

According to the invention of claim 4 , in addition to the effect of claim 1, the band-like portion can be elastically deformed and the hook portion can be securely held.

  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 side view showing the internal configuration of a hair dryer according to this embodiment (partial sectional view), FIG. 2 is an exploded perspective view of a portion where a filter unit is attached to a main body, and FIG. FIG. 4 is a cross-sectional view in a section along the center line of the air passage in the portion to which the filter unit is attached, and FIG. 4 is a cross-sectional view in a section perpendicular to the center line of the air passage in the portion to which the filter unit is attached.

  As shown in FIG. 1, a hair dryer 1 according to the present embodiment has a shape in which a main body 2 and a handle 3 are combined 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 suction port 4a to the blowout port 4b is formed in the cylinder of the casing 2a. The air passage 4 is provided with a blower 5 including an electric motor and an axial fan, and the air from the inlet 4a to the outlet 4b in the air passage 4 by rotating the axial fan by the electric motor. A stream is generated. A heater 6 is provided on the downstream side of the air passage 4 so that heated hot air can be blown out from the outlet 4b. And in the main-body part 2, the ion generation part 7 is provided, and it can discharge | emit ion (mist) from the 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 9b is routed in the handle casing 3a. In addition, an operation switch 8 is provided at a middle portion in the longitudinal direction of the handle portion 3. In the present embodiment, the power cord 9 has a flat shape in which two lead wires 9a are arranged adjacent to each other. The power cord 9 is pulled out through a 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 a bushing 10.

  The ion generation unit 7 includes a discharge electrode 7b formed in a needle shape and an annular ground electrode 7c disposed so as to surround the periphery of the discharge electrode 7b. The discharge electrode 7b and the ground electrode 7c A high voltage is applied during The ion generation unit 7 includes a cooling unit composed of a Peltier element or the like. The cooling unit causes moisture in the air to condense on the discharge electrode 7b, and the condensed water is discharged by discharge accompanying high voltage application. It splits to produce charged fine particles (ions) of negatively charged water. The ions generated in this way are released by using an air branch or the like that is a partial branch of the air flow in the air passage 4.

  The air inlet 4 a of the air passage 4 is covered with two filters 13 and 14. Of these, the downstream filter 13 is directly attached to the main body side frame 11 fixed to the main body 2, and the upstream filter 14 is attached to the main body side frame 11 via the filter side frame 12. In the present embodiment, the main body side frame 11 corresponds to the filter unit mounting portion, the upstream filter 14 and the filter side frame 12 correspond to the filter unit, and the filter side frame 12 corresponds to the main body mounting portion of the filter unit. Equivalent to.

  The upstream filter 14 includes a filter portion 14a formed as a substantially planar mesh, and a relatively low cylindrical portion 14b formed at the periphery of the filter portion 14a. A plurality of hook portions 14 c are formed on the opposite side of the tubular portion 14 b to the filter portion 14 a, and the hook portions 14 c and the tubular portion 14 b are fitted into an annular concave groove portion 12 a formed on the filter side frame 12. Thus, the filter 14 is attached to the filter side frame 12.

  The filter side frame 12 is formed in a substantially cylindrical shape, and an elongated recess 12c is formed in the inner peripheral surface 12b along the circumferential direction. Further, the outer peripheral surface 12d is formed with a concavo-convex shape with a hooking portion 12e for hooking a finger or the like when pulling out.

  The downstream filter 13 includes a filter portion 13a formed as a substantially hemispherical mesh, and a tubular portion 13b having a relatively low height formed at the periphery of the filter portion 13a. In the cylindrical portion 13b, a plurality of hook portions 13c are formed on the opposite side of the filter portion 13a. The plurality of hooks 13c are inserted into a plurality of recesses 11d formed on the outer periphery of the main body side frame 11, and the cylindrical portion 13b is inserted into an annular concave groove 11c formed on the main body side frame 11. By doing so, the filter 13 is detachably attached to the main body side frame 11.

  The main body side frame 11 has a double cylindrical shape in which the outer cylindrical portion 11a and the inner cylindrical portion 11b are coupled on the upstream side, and the upstream side in which the outer cylindrical portion 11a and the inner cylindrical portion 11b are coupled. An annular concave groove portion 11c is formed at the end portion. An elongated slit-shaped through hole 11e is formed in the outer cylinder portion 11a along the circumferential direction. As shown in FIG. 4, a pair of ribs 11 f and 11 f that are disposed substantially in parallel with a space between the outer cylinder portion 11 a and the inner cylinder portion 11 b are the center line of the air passage 4. Two pairs are arranged at positions symmetrical to each other.

  And in this embodiment, the attachment tool 15 for attaching the filter side frame 12 to the main body side frame 11 so that attachment or detachment is possible is mounted | worn. The fixture 15 is formed in a strip shape bent in a substantially Ω shape. In addition, hook portions 15b are formed at both ends in the longitudinal direction, and the outer side of the belt-like portion 15a bent in a substantially C shape between the two hook portions 15b is bent outward. A projecting portion 15c that protrudes toward the surface is provided. The belt-like portion 15a is elastically deformed as the projection 15c is pressed. In other words, in the present embodiment, the strip portion 15a corresponds to an elastic deformation portion.

  Further, in order to attach the fixture 15 having such a configuration to the main body side frame 11, each rib 11f is formed with an elongated through hole 11g as a receiving portion for receiving the hook portion 15b.

  In the above configuration, as shown in FIGS. 3, 4, etc., the fixture 15 has the longitudinal direction of the strip-shaped portion 15 a along the circumferential direction of the main body side frame body 11, and the strip-shaped portion 15 a of the outer cylinder portion 11 a. With the posture along the inner periphery, the hook portion 15b is inserted into the through hole 11g, the protrusion portion 15c is inserted into the through hole 11e, and the tip end side of the protrusion portion 15c inserted into the through hole 11e is the outer cylinder portion 11a. It is attached in a state of protruding outward from the surface 11s.

  As shown in FIGS. 3 and 4, in a state where the filter side frame body 12 is mounted on the main body side frame body 11, the protruding portion 15 c protruding from the surface 11 s of the outer cylinder portion 11 a is formed on the filter side frame body 12. It is inserted into a recess 12c formed on the inner peripheral surface 12b. In the present embodiment, the main body side frame body 11 and the filter side frame body 12 are locked to each other by the engagement of the protrusions 15c and the recesses 12c. That is, in this embodiment, the protrusion 15c corresponds to the protrusion of the present invention, and the recess 12c corresponds to a receiving portion that receives the protrusion.

  The fixture 15 is bent (elastically deformed) by pressing the protrusion 15c in the inner diameter direction, and intersects the center line of the air passage 4 from the surface 11s (the through hole 11e formed in the surface 11s (orthogonal in this embodiment). In such a manner that it can be elastically projected and retracted. Therefore, when the filter side frame body 12 is mounted on the main body side frame body 11, the protrusion 15c has a portion on the front side in the mounting direction (left side in FIG. 3) with respect to the concave portion 12c of the filter side frame body 12. When pushed in the radial direction, it is immersed in the through hole 11e, and when it is pushed in the mounting direction to the position where the concave portion 12c overlaps with the through hole 11e, it protrudes radially outward from the through hole 11e and enters the concave portion 12c. Inserted.

  On the other hand, when removing the filter side frame 12 from the state shown in FIGS. 3 and 4, the filter side frame 12 is put on the hook 12e formed on the outer peripheral surface 12d of the filter side frame 12 with fingers. Is pulled out from the main body side frame 11. At this time, the protrusion 15c is immersed in the through hole 11e by being pushed radially inward by a portion on the front side in the mounting direction (left side in FIG. 3) with respect to the concave portion 12c of the filter side frame 12, and enters the through hole 11e. When the frame 12 is pulled out and the pressing is released, the frame 12 protrudes from the through hole 11e in the radially outward direction.

  That is, in the present embodiment, the attachment 15 is attached to the main body side frame 11, and the protrusion 15c protrudes from the surface 11s of the outer cylinder portion 11a of the main body side frame 11 so as to be able to project and retract, so that the filter side frame The body 12 can be inserted into and removed from the main body side frame body 11. Note that the specifications of each part such as the interval between the ribs 11f and 11f, the formation position of the through hole 11g, and the shape of the fixture 15 take into account the elastic deformation of the belt-like part 15a and the engagement between the protrusion 15c and the recess 12c. It can be understood that this is set appropriately.

  Further, in the present embodiment, the main body side frame 11 (general part thereof, the whole in the present embodiment) and the fixture 15 are made of different materials. It is made of a material having higher slidability than the material of the general part). Specifically, for example, the main body side frame 11 is made of an amorphous plastic material such as acrylonitrile butadiene styrene (ABS) or polycarbonate (PC), and the fixture 15 is made of polyamide (PA), polyacetal (POM) or polyethylene. A crystalline plastic material such as terephthalate (PET) or polyphenylene sulfide (PPS) is used. The material of the main body side frame 11 is preferable in terms of heat resistance, flame retardancy, and aesthetics, and the material of the fixture 15 is preferable in terms of slidability and rigidity.

  As described above, in the present embodiment, the main body side frame body 11 serving as the filter unit mounting portion protrudes elastically in a direction intersecting with the mounting direction of the filter side frame body 12 constituting the filter unit from the surface 11s. Protruding portions 15c that protrude as possible are provided, while the filter side frame 12 is provided with recesses 12c that receive the protrusions 15c, and the filter unit (filter side frame 12 is engaged by engagement of the protrusions 15c and the recesses 12c. The upstream filter 14) integrated with the main body 2 is locked to the main body 2 so that the material of the protrusion 15c is different from the material of the main body frame 11. For this reason, it becomes possible to select a more suitable material for the protrusion 15c, and the engagement structure has a higher durability than the case where the protrusion 15c is integrally formed with a material suitable for the main body side frame 11. It can be improved further.

  In the present embodiment, the protrusion 15 c is made of a material that is more slidable than the main body side frame 11. If the protrusion is made of a material with relatively low slidability, the amount of deformation locally increases on the protrusion side, for example, the protrusion is caught on the filter side frame when attaching or detaching. Stress concentration may increase. In this regard, in the present embodiment, since the protrusion 15c is made of a material having a relatively high slidability, such stress concentration can be suppressed and the durability of the engagement structure can be further improved.

  In the present embodiment, the protrusion 15c is made of a crystalline plastic resin material. Therefore, the slidability of the protrusion 15c can be improved and the stress concentration can be suppressed.

  Moreover, in this embodiment, since the projection part 15c was comprised as a different member (separate part) from the main body side frame 11, compared with the case where these are integrated, the stress which arises in the projection part 15c or its peripheral part is further increased. Can be reduced.

  Moreover, in this embodiment, the projection part 15c and the strip | belt-shaped part 15a as an elastic deformation part were integrated. For this reason, compared with the case where these are comprised as another component, a number of parts can be reduced and assembly workability | operativity can be improved.

(First Reference Example ) FIG. 5 is a side view of a main body side frame portion as a filter unit mounting portion equipped in a hair dryer according to this reference example , and FIG. 6 is a sectional view taken along line VI-VI in FIG.

In this reference example , instead of the fixture 15 of the first embodiment, an attachment portion 15A integrated with the main body side frame 11A is provided, and the other portions are the same as those of the first embodiment. The configuration is as follows. The main body side frame 11A can be used in place of the main body side frame 11 disclosed in the first embodiment, and the filter side frame 12 can be attached to the main body side frame 11A.

In this reference example , the outer cylinder portion 11a is cut out in a substantially U shape to form a through hole 15d, and a protruding portion 15c is formed on the distal end side of the band-like portion 15a remaining in a cantilever shape inside the through hole 15d. It is provided. In such a configuration, when the filter side frame 12 is attached to and detached from the main body side frame 11A, the belt-like portion 15a is elastically deformed and bent, and the projection 15c protrudes and sinks with respect to the surface 11s of the outer cylinder portion 11a. Will do.

Furthermore, in this reference example , the material of the protrusion 15c and the material of the general part of the main body side frame 11A are different from each other by two-color molding. That is, in this reference example , at least the protrusion 15c is made of a material having higher slidability than the general part of the main body side frame 11A, and the same crystallinity as disclosed in the first embodiment. As a plastic material. The boundary of the two-color molding can be determined as appropriate. For example, only the protruding side tip portion of the protruding portion 15c, the protruding portion 15c, the protruding portion 15c and the band-shaped portion 15a, and from the protruding portion 15c to the periphery of the root portion of the band-shaped portion 15a. Can be made of a material different from the general part.

Therefore, it is possible by this reference example, effects similar to those of the first embodiment. In addition, in this reference example , the protrusion 15c and the band-shaped portion 15a are integrated with the main body side frame 11A, so that the number of parts is reduced compared to the case where they are configured separately, and the workability during assembly is improved. There is an advantage that you can.

Furthermore, in this reference example , as shown in FIG. 6, the protrusion 15c is on the near side (right side in FIG. 6) of the filter unit (filter side frame 12) mounting direction (direction along line I in FIG. 6). ) And the back side (left side in FIG. 6) are formed with inclined surfaces 15i and 15p, respectively. Of the two inclined surfaces 15i and 15p, when the filter unit is mounted, the concave portion 12c (FIG. 2) The inclined surface 15i on the side close to (see FIG. 4) is more gently inclined with respect to the mounting direction (the direction along the line I) than the inclined surface 15p on the opposite side. Specifically, the angle formed between the inclined surface 15i on the near side in the insertion direction and the line I in a side view is 45 °, and the angle formed between the inclined surface 15p on the opposite side and the line I is 60 °. With this configuration, it is possible to make the force required when mounting the filter unit relatively small, and make the force required when removing the filter unit relatively large and difficult to remove. Needless to say, such a configuration can be similarly applied to the first embodiment or other reference examples . The set angle can be changed as appropriate.

(Modified example of the first reference example ) FIG. 7 is a side view of the main body side frame as a filter unit mounting part equipped in a hair dryer according to a modified example of the first reference example , and FIG. It is sectional drawing.

  In this modified example, two elongated slit-like through holes 15d having the same length are arranged side by side along the circumferential direction in the outer cylinder portion 11a of the main body side frame 11B. A substantially rectangular both-end support beam-like belt-like portion 15a is formed between 15d and 15d, and a protrusion 15c is provided at a substantially central portion of the belt-like portion 15a to constitute a mounting portion 15B. Even in such a configuration, when the filter side frame body 12 is attached to and detached from the main body side frame body 11B, the belt-like portion 15a is elastically deformed and bent, and the projection portion 15c protrudes and retracts from the surface 11s of the outer cylinder portion 11a. Will do.

Then, similarly to the first reference example , two-color molding is performed, and at least the protrusion 15c is made of a material having higher slidability than the general part of the main body side frame 11B, and further disclosed in the first embodiment. It is a crystalline plastic material similar to that described above.

Therefore, the effect similar to the said 1st reference example can be acquired also by this modification.

( Second Reference Example ) FIG. 9 is a cross-sectional view of a main body of a hair dryer according to this reference example , and FIG. 10 is an enlarged view of a part of FIG.

A hair dryer 1C according to this reference example basically has the same configuration as the hair dryer 1 according to the first embodiment. However, the point which comprised the processus | protrusion and the elastic deformation part as a different member is different from the said 1st Embodiment and the said reference example .

That is, in the present reference example , as shown in FIG. 10, in the main body side frame 11 </ b> C fixed to the main body 2 </ b> C, the movable portion 15 </ b> C including the protruding portion 15 c is moved by the coil spring 16 as an elastic body. 15c is attached so as to be biased in a direction protruding outward from the through hole 11e. A pedestal 11h of a coil spring 16 is provided in the inner cylinder part 11b, and a guide rib 11j of the movable part 15C is provided in the outer cylinder part 11a.

In this reference example , the material of the movable portion 15C is a material having higher slidability than the general portion of the main body side frame 11C, and further, the same crystalline plastic material as disclosed in the first embodiment. is there.

  Therefore, the same effect as that of the first embodiment can be obtained by such a configuration.

The preferred embodiments and reference examples of the present invention have been described above, but the present invention is not limited to the above-described embodiments and reference examples , and various modifications can be made. For example, protrusions and elastic deformation portions may be provided on the filter unit side (filter side frame).

It is a side view (partial sectional view) showing the internal configuration of the hair dryer according to the first embodiment of the present invention. It is a disassembled perspective view of the part which attaches a filter unit to the main-body part of the hair dryer concerning 1st Embodiment of this invention. It is sectional drawing in the cross section in alignment with the centerline of the air path of the part which attached the filter unit of the hair dryer concerning 1st Embodiment of this invention. It is sectional drawing in a cross section perpendicular | vertical to the centerline of the air path of the part which attached the filter unit of the hair dryer concerning 1st Embodiment of this invention. It is a side view of the main body side frame part as a filter unit attachment part with which the hair dryer concerning the 1st reference example of this invention is equipped. It is VI-VI sectional drawing of FIG. It is a side view of the main body side frame part as a filter unit attachment part with which the hair dryer concerning the modification of the 1st reference example of this invention is equipped. It is VIII-VIII sectional drawing of FIG. It is sectional drawing of the main-body part of the hair dryer concerning the 2nd reference example of this invention. FIG. 10 is an enlarged view of a part of FIG. 9.

Explanation of symbols

1,1C Hair dryer 2,2C Body part 4 Air passage 4a Suction port 4b Air outlet 11, 11A, 11B, 11C Body side frame (filter unit mounting part)
11s surface 12 filter side frame (main body mounting part)
12c Concave part (receiving part)
14 Filter 15a Band-shaped part (elastic deformation part)
15c Protrusion (protrusion)
15i Inclined surface 15p (on the side close to the receiving portion when the filter unit is mounted) 15p (opposite side) Inclined surface I Mounting direction

Claims (4)

In the hair dryer in which an air passage extending from the suction port to the outlet is formed in the main body, and the filter unit is detachably attached to the suction port side of the main body,
The filter unit mounting portion of the main body is provided with a separate protrusion that protrudes elastically in a direction intersecting the mounting direction of the filter unit from the surface thereof. A receiving portion is provided, and the protrusion is composed of a fitting for attaching to the filter unit attachment portion and a protrusion received in the receiving portion,
The fixture is formed in a band plate shape, and includes a belt-shaped portion that is bent in a substantially C shape in the longitudinal direction and can be elastically deformed. Formed into
The protrusion is provided so as to protrude toward the outer side of the belt-like portion at the substantially central portion in the longitudinal direction of the belt-like portion,
The filter unit mounting portion is configured in a double cylindrical shape composed of an outer cylindrical portion and an inner cylindrical portion,
The attachment is attached so that the belt-like portion can be elastically deformed between the outer tube portion and the inner tube portion,
A slit-like through-hole is formed in the outer cylinder part to project the tip side of the protrusion part outward from the surface of the outer cylinder part,
Hair dryer, wherein that you have configured the material of the protrusions in the above material of the filter unit mounting portion of the sliding material. An inclined surface is formed on each of the protrusion on the front side and the back side in the mounting direction,
Of the two inclined surfaces, when mounting the filter unit, the inclined surface close to the receiving portion is inclined more gently with respect to the mounting direction than the inclined surface on the opposite side. The hair dryer according to claim 1. 3. The hair dryer according to claim 1, wherein the protrusion is made of a crystalline plastic resin material. A pair of ribs are provided between the outer tube portion and the inner tube portion on both sides in the circumferential direction of the through hole, and the rib is attached to the filter unit mounting portion. The hair dryer according to claim 1, wherein a second through hole for receiving the hook portion is formed.

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