JP2011067318A - Hair care device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hair care device suppressing plastic deformation of a rotation ring against repeated bending deformation of the rotation ring without changing the material of the rotation ring. <P>SOLUTION: The hair care device includes a tactile mechanism for restricting turning of a grip housing relative to a body housing at a use position and a folded position. The tactile mechanism includes a first engagement body 10 provided at one member (body housing) and having first protrusions 12 protruded in a direction orthogonal to the turning axis, and a second engagement body provided at the other member (grip housing) in a manner to turn relative to the first engagement body 10, and having second protrusions configured to make press-contact with the first protrusions 12 to ride over each other. Portions 10K at which the first protrusions 12 of the first engagement body 10 are provided have a radial thickness t1 larger than the radial thickness t2 of the other portions 10N. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a hair care device in which a grip housing is rotatably connected to a connecting portion of a main body housing.

  Conventionally, the main body housing of the main body portion having a hair care function, the grip housing of the grip portion rotatably attached to the connecting portion of the main body housing, and the main body housing of the grip housing in each of the use position and the folding position 2. Description of the Related Art A hair care device including a moderation mechanism that regulates rotation is known (see, for example, Patent Document 1).

  In this case, the moderation mechanism is engaged with a boss portion provided on the main body housing, and a rotation ring (first engagement body) provided with a click projection (first protrusion) on the outer periphery. And a click engaging part (second convex part) that projects directly from the grip housing and engages the first convex part. Then, by rotating the grip housing with respect to the main body housing, the rotating ring and the grip housing rotate relative to each other so that the click protrusion and the click engagement portion can get over each other in a pressure contact state. Yes.

  Therefore, during normal use, the click projection on the rotating ring can be combined with the click engagement portion on the other side to hold the grip portion, and when the grip portion is folded, the click projection and the click engagement portion are mutually connected. A feeling of clicking can be generated by getting over.

JP-A-2-77207

  However, in the conventional hair care device, when the click projection and the click engagement portion get over each other, reaction forces (loads) in opposite directions are generated in the click projection and the click engagement portion, respectively. The load acts in the radial direction of the rotating ring. At this time, the larger the load, the greater the holding force and click feeling of the grip portion, and consequently the rigidity of the moderation mechanism can be increased and the backlash of the grip portion can be eliminated.

  By the way, when a load is generated on the rotating ring in this way, the rotating ring is bent and deformed in a direction in which the rotating portion is crushed in the central direction. This bending deformation is repeated each time the grip portion is folded, and the rotating ring is easily plastically deformed due to repeated fatigue. As described above, when the rotating ring is plastically deformed, the pressure contact force between the click projection and the click engagement portion may be reduced, and the grip portion may be loosely generated.

  Therefore, to suppress plastic deformation of the rotating ring, it is conceivable to form the rotating ring from a material having higher rigidity, for example, a metal such as aluminum. However, this is disadvantageous in terms of workability and cost. End up.

  Then, an object of this invention is to obtain the hair care apparatus which can suppress a plastic deformation, without changing the material of a rotating ring with respect to a rotating ring being repeatedly bent and deformed.

  In the invention of claim 1, the main body housing, the grip housing rotatably attached to the connecting portion of the main body housing, and the rotation of the grip housing with respect to the main body housing in each of the use position and the folding position. A moderation mechanism that regulates, and the moderation mechanism has a first convex portion that is provided on one member of the main body housing and the grip housing and projects in a direction perpendicular to the rotation center axis. The first engaging body and the second projecting section that are provided on the other member so as to be rotatable relative to the first engaging body and that can be overcome with each other with pressure contact with the first projecting section. A second care body having a second engagement body, wherein the first engagement body has a thickness in a radial direction of a portion where the first convex portion is provided, The thickness in the radial direction Characterized in that it is also thicker.

  The invention according to claim 2 is characterized in that the first engaging body is formed in an annular shape around the rotation center axis.

  In the invention of claim 3, the first protrusion is provided on the outer periphery of the first engagement body, and the second engagement body is disposed to face the outer periphery of the first engagement body. The second convex portion is provided in a portion of the second engaging body facing the outer periphery of the first engaging body.

  In the invention of claim 4, a locking portion for locking the first engagement body to the one member is provided inside the portion where the thickness of the first engagement body is reduced. It is characterized by that.

  The invention according to claim 5 is characterized in that a plurality of the first convex portions and the locking portions are provided in the circumferential direction of the first engaging body.

  The invention according to claim 6 is characterized in that the first convex portion and the locking portion are provided in two places on one straight line corresponding to each passing through the center of the first engaging body. .

  According to the first aspect of the present invention, when the grip housing is extended and bent, the first engaging body and the second engaging body rotate relative to each other, and the first convex portion and the second engaging portion of the first engaging body are rotated. When the second convex portion of the engaging body climbs over each other, a load due to the pressure contact between the first convex portion and the second convex portion is input in the radial direction of the first engaging body. At this time, the thickness in the radial direction of the portion provided with the first convex portion is made thicker than the thickness in the radial direction of the other portions, so that the strength is increased in the portion where the thickness is increased. The repulsive force of the first engaging body can be increased. Therefore, even when the bending deformation of the first engaging body is repeated every time the grip portion is folded, the first engaging body is plastically deformed due to repeated fatigue. It can be suppressed without changing to a highly rigid one.

  According to the second aspect of the present invention, the first engaging body is formed in an annular shape with the rotation center axis as the center, so that the configuration of the moderation mechanism can be simplified.

  According to the invention of claim 3, the same effect as that of claim 1 can be obtained.

  According to the invention of claim 4, since the locking portion for locking the first engagement body to the one member is provided inside the portion where the thickness of the first engagement body is reduced, The stress generated when the load is applied to the first engagement body is concentrated on the portion where the thickness is reduced, but the stress can be supported by the one member via the locking portion. . Thereby, it can suppress that a 1st engaging body deform | transforms greatly with the said load.

  According to the fifth aspect of the present invention, since the plurality of first protrusions and the locking portions are provided in the circumferential direction of the first engaging body, the circumferential direction of the location where the load acts and the location where the stress is supported is provided. Since the interval can be shortened, the deformation of the first engagement body can be further suppressed.

  According to the invention of claim 6, since the first convex portion and the locking portion are provided in two places on one straight line corresponding to each passing through the center of the first engaging body, the place where the load acts and The location where the stress is concentrated can be set to the opposite position across the center of the first engagement body.

It is an external appearance perspective view of the hair dryer concerning one Embodiment of this invention. It is sectional drawing of the hair dryer shown in FIG. It is the disassembled perspective view which looked at the moderation mechanism of the one-side housing which makes the main-body part outline of the hair dryer shown in FIG. 1 from the outer side. It is a disassembled perspective view which shows the outer side of the connection part of the other side housing which makes the main-body-part outline of the hair dryer shown in FIG. 1, and the inner side of the attaching part to the main-body part of the other-side housing which forms the grip part outline. It is a disassembled perspective view which shows the outer side of the connection part of the other side housing which makes the main-body part outline of the hair dryer shown in FIG. 1, and the outer side of the other side housing which makes the grip part outline. It is the perspective view which looked at the state which assembled | attached the rotating ring to the connection part of the one side housing which makes the main-body part outline of the hair dryer shown in FIG. It is the perspective view which isolate | separated the rotation control part and looked at the attaching part to the main-body part of the one-side housing which makes the grip part outline of the hair dryer shown in FIG. It is the perspective view which looked at the state which attached the rotation control part to the attachment part to the main-body part of the one side housing which makes the grip part outline of the hair dryer shown in FIG. A state in which the connecting portion of the one-side housing that forms the outer portion of the main body of the hair dryer shown in FIG. 1 and the attachment portion to the main portion of the one-side housing that forms the outer portion of the grip portion are coupled via the rotation ring and the rotation restricting portion. FIG. It is explanatory drawing in the state which extended the grip part of the hair dryer shown in FIG. 1 to the use position. It is explanatory drawing in the state which bent the grip part of the hair dryer shown in FIG. 1 to the folding position. It is a front view of the rotation ring used for the connection part of the hair dryer shown in FIG. It is the figure which showed the simulation result of the deformation | transformation state at the time of a load acting on the conventional rotation ring. It is the figure which showed the simulation result of the deformation | transformation state at the time of a load acting on the rotation ring of this embodiment. It is the front view which showed the modification of the rotating ring shown in FIG. It is the figure which showed the modification of the quick ring of the hair dryer shown in FIG. It is the figure which showed the modification of the quick ring of the hair dryer shown in FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIGS. 1-14 is the figure which showed one Embodiment of the hair care apparatus concerning this invention. Below, although the hair dryer 1 is demonstrated as a hair care apparatus, the hair care apparatus of this invention shall include other apparatuses and apparatuses, such as a hairbrush, for example. 1 to 8, X indicates the left side, Y indicates the front side, and Z indicates the upper side.

  As shown in FIGS. 1 and 2, the hair dryer 1 includes a main body portion 3 having a hair care function and a grip portion 5 that is rotatably connected to a connecting portion 31 of the main body portion 3.

  Inside the main body 3, a wind tunnel 2 is formed from an air suction port 3a covered with a filter at the rear end (right side in the drawing) to an air outlet 3b at the front end (left side in the drawing). Air W is formed by rotating the fan F accommodated in the wind tunnel 2. That is, the air flow W flows into the wind tunnel 2 from the outside through the air suction port 3a, passes through the wind tunnel 2 and is discharged to the outside from the air outlet 3b.

  The fan F is disposed on the most upstream side of the wind tunnel 2, a motor M that rotationally drives the fan F is disposed on the downstream side thereof, and a heater H as a heating mechanism is disposed on the further downstream side of the motor M. The The operation mode of the heater H can be switched by the second switch 61 provided in the connecting portion 31 of the main body 3. When the heater H is operated, the heater H is heated from the air outlet 3 b. When warm air is blown out and the heater H is not operated, the cold air is blown out from the air outlet 3b.

  A pair of ion emission ports 3c and 3d are provided on the upper front surface of the main body 3, and negative ions generated by the built-in ion generator I are forward (leftward in FIG. 2) from the ion emission port 3c. To be released. In this case, platinum ions may be emitted from one of the ion emission ports 3d. By imparting such a function, the hair is glossy and moisturized, and is effective in removing hair.

  A first switch 6 serving as a main switch is provided at the front center portion of the grip portion 5 so as to be switchable in a plurality of stages. The first switch 6 performs power on / off and air volume adjustment. Further, a third switch 62 is provided at the base of the side surface of the connecting portion 31 of the main body 3, and the mist is turned on / off by the ion generator I by the third switch 62. In FIG. 1, reference numeral 3e denotes a light emitting unit. The light emitting unit 3e is in each operation state such as a state where warm air is blown out using a heater H or a state where mist is discharged. By changing the emission color accordingly, it can be used as display means for the operation mode of the hair dryer 1.

  A moderation mechanism 4 is provided between the lower end portion of the connecting portion 31 and the upper end portion of the grip portion 5 to restrict the rotation of the grip portion 5 at each of the use position and the folding position.

  At this time, the main body 3 is configured by combining a main body left housing 3Hl and a main body right housing 3Hr whose outer shell is divided into left and right, and similarly the grip portion 5 has an outer shell left and right. The grip left housing 5Hl and the grip right housing 5Hr which are divided into two parts are combined.

  Therefore, the moderation mechanism 4 is provided between the outer lower portion of the connecting portion 31 of the main body right housing 3Hr as shown in FIG. 3 and the inner upper portion of the grip right housing 5Hr as shown in FIG. As shown in FIG. 5, it is provided between the outer lower part of the grip mounting portion 31 of the main body left housing 3Hl and the inner upper part of the grip left housing 3Hl.

  The moderation mechanism 4 of the present embodiment is fixed to a main body 3 (main body right side housing 3Hr) as one member around the rotation center axis C (see FIGS. 3 and 4) of the moderation mechanism 4 as a center. A rotating ring 10 as an engaging body, and a click ring 20 as a second engaging body that is disposed opposite to the outer periphery of the rotating ring 10 and is fixed to the grip portion 5 (grip right housing 5Hr) as the other member. (See FIG. 7).

  As shown in FIG. 3, the rotating ring 10 is formed in a ring shape having a predetermined length a in the direction of the rotation center axis C, and a locking projection 11 (locking portion) is provided on the inner peripheral surface thereof. In addition, the first convex portion 12 protrudes from the outer peripheral surface.

  Further, as shown in FIG. 6 and FIG. 6, the rotating ring 10 is disposed in a circular recess 32 provided outside the main body right side housing 3Hr, and the rotation center axis C described above from the bottom surface of the circular recess 32. It is fitted to the outside of the boss portion 33 protruding as a center. At this time, the fitting portion between the rotating ring 10 and the boss portion 33 is provided with a gap that allows deformation of the rotating ring 10 described above.

  An engaging groove 33a is formed on the outer peripheral portion of the boss portion 33, and the engaging protrusion 11 of the rotating ring 10 is engaged with the engaging groove 33a. And eventually integrated with the connecting portion 31 of the main body 3 in the rotational direction.

  On the other hand, the click ring 20 may be formed integrally with the grip right housing 5Hr of the grip portion 5, but in this embodiment, as shown in FIG. 7, the click ring 20 is connected to the grip right housing 5Hr. Is formed as a separate body, and is formed in an annular shape that continuously surrounds the outer periphery of the rotating ring 10. In addition, a bottom surface 21 is provided in an annular shape integrally with the click ring 20 at one end portion of the click ring 20 formed in an annular shape in the direction of the rotation center axis C, that is, on the end portion facing the inner side of the grip right housing 5Hr. It has been.

  A second convexity that can be overcome by mutual contact with the first convex portion 12 of the rotating ring 10 on the opposing portion where the click ring 20 faces the outer periphery of the rotating ring 10, that is, the inner peripheral surface of the click ring 20. A portion 22 is provided. At this time, when the first convex portion 12 gets over the second convex portion 22, a load (reaction force) R (see FIG. 12) acting in the central direction is applied to the first convex portion 12.

  As shown in FIG. 8, the second convex portion 22 receives the first convex portion 12 in the central portion when the grip portion 5 is extended with respect to the main body portion 3 and is in use (see FIG. 10). A lid-shaped convex portion 22a and a click convex portion 22b provided at a position displaced from the lid-shaped convex portion 22a by the folding angle θ1 of the grip portion 5 (see FIG. 10). At this time, the protruding portions of the lid-shaped convex portion 22a and the click convex portion 22b are arcuate.

  As shown in FIG. 7, the click ring 20 is arranged inside a circular protrusion 51 provided at the upper end of the grip right housing 5Hr. The center of the circular protrusion 51 coincides with the rotation center axis C, and a stepped hole 52 is formed at the center.

  In the stepped hole 52, a stepped portion 52a is formed on the side facing the circular protruding portion 51 (main body right housing 3Hr), and a tip of a cylindrical shaft 56 described later is attached to the stepped portion 52a. ing.

  On the bottom surface 21 of the click ring 20, as shown in FIG. 7, a plurality of (six in the present embodiment) engaging convex portions 23 are projected toward the circular protruding portion 51 at substantially equal intervals in the circumferential direction. At the same time, a plurality of recesses 53 are provided on the inner side of the circular protrusion 51 to closely fit the engagement protrusions 23.

  The recess 53 is provided between a plurality of radial ribs 53c centered on the rotation center axis C, and the ribs 53c are reinforced by arc-shaped ribs 53d centered on the rotation center axis C. Then, by inserting and engaging the engagement convex portion 23 of the click ring 20 into the recess 53, the click ring 20 is locked to the grip right housing 5Hr in the rotational direction, and consequently, to the grip portion 5 in the rotational direction. Become one.

  At this time, a part of the plurality of engaging protrusions 23, that is, two engaging protrusions 23a positioned below in the present embodiment are slightly protruded from the other engaging protrusions 23b. Thus, when the quick ring 20 is assembled, first, the high engaging convex portion 23a is inserted into the recess 53a using the high engaging convex portion 23a as a guide, and then the remaining engaging convex portion 23b is inserted into the concave portion 53b. It becomes easy to insert the engaging convex portion 23 as a whole.

  Furthermore, in the present embodiment, the two engaging projections 23a positioned below are made longer than the other engaging projections 23b, and the corresponding recess 53a of the circular protrusion 51 is also provided. The lateral width is longer than that of the other recess 53b. In this way, when the click ring 20 is assembled, the engaging protrusion 23a having a long lateral width can be inserted only into the corresponding recess 53a. (The position of the second convex portion relative to the first convex portion) can be assembled.

  Further, in the present embodiment, as shown in FIG. 6, protrusions 34 projecting outward are formed on both sides of the engagement groove 33 a of the boss 33 that fits the rotating ring 10. On the other hand, as shown in FIGS. 7 and 8, a pair of convex portions 54 that lock the protrusion 34 on the peripheral edge of the stepped hole 52 is centered on the surface of the circular protrusion 51 facing the right housing 3 </ b> Hr. It is formed on one straight line passing through.

  When the main body right housing 3Hr and the grip right housing 5Hr are assembled, the rotary ring 10 is assembled to the boss 33 of the main body right housing 3Hr, and the click ring 20 is assembled to the circular protrusion 51 of the grip right housing 5Hr. Thereafter, the circular protrusion 51 is placed on the circular recess 32 of the main body right housing 3Hr from the outside so that the click ring 20 is fitted to the outer periphery of the rotating ring 10. Thus, the main body right housing 3Hr and the grip right housing 5Hr are temporarily assembled.

  At this time, the protrusions 34 of the boss 33 to which the rotating ring 10 is fitted are respectively positioned in arcuate recesses 54 a formed between the pair of protrusions 54 at the peripheral edge of the stepped hole 52, and the grip 5 The protrusion 34 moves in the arc-shaped recess 54a by the rotation accompanying the folding. When the grip portion 5 is in the extended state, the protrusion portion 34 abuts against one of the pair of convex portions 54, and when the grip portion 5 is bent and folded, the protrusion portion 34 is It strikes against the other of the convex parts 54. Therefore, the first stopper portion S <b> 1 on the inner side is constituted by the protruding portion 34 and the convex portion 54.

  Next, the assembly of the main body left housing 3Hl and the grip left housing 5Hl will be described. As shown in FIG. 4, a circular recess 35 is formed on the lower outer side of the connecting portion 31 of the main body left housing 3Hl, and a circular protrusion 55 is provided on the upper end of the grip left housing 5Hl. On the inner side of the circular protrusion 55, a cylindrical shaft 56 that projects from the rotation center axis C to reach the stepped hole 52 (see FIG. 7) of the grip right housing 5Hr is projected, while the main body left housing 3Hl. An insertion hole 36 is formed in the center of the circular recess 35 to fit the cylindrical shaft 56 in close contact with the rotation center axis C in a rotatable manner.

  In addition, a pair of fan-shaped convex portions 37 project from the outer surface of the circular concave portion 35 with a predetermined angle θ2 around the insertion hole 36, and the inner surface of the circular projecting portion 55 centers around the cylindrical shaft 56. A pair of arcuate recesses 57 for receiving the fan-shaped protrusions 37 are provided.

  Then, as shown in FIG. 5, the circular protrusion 55 of the grip left housing 5 </ b> Hl is placed outside the circular recess 35 of the main body left housing 3 </ b> Hl so that the cylindrical shaft 56 is inserted through the insertion hole 36. Thus, the temporary assembly of the main body right housing 3Hr and the grip right housing 5Hr is completed. At this time, the tip end portion of the cylindrical shaft 56 is in a state of protruding a predetermined amount from the inside of the insertion hole 36.

  Further, when the circular protrusion 55 is put on the circular recess 35, the fan-shaped convex portion 37 is positioned in the arc-shaped concave portion 57, and the fan-shaped convex portion 37 moves in the arc-shaped concave portion 57 as the grip portion 5 rotates. To do. When the grip portion 5 is in the extended state and the folded state, the fan-shaped convex portions 37 come into contact with both end walls 57a of the arc-shaped concave portion 57, and the fan-shaped convex portions 37 and both end walls 57a The second stopper portion S2 is configured.

  Further, as shown in FIG. 4, an arcuate opening 38 is formed in the lower portion of the circular recess 35 of the main body left housing 3 </ b> Hl, and a notch 38 a is formed in a part of the outer peripheral portion of the opening 38. Has been. On the other hand, as shown in FIG. 6, a protrusion 39 is provided at the lower end portion of the connecting portion 31 of the main body right housing 3Hr so as to be inserted in close contact with the cutout portion 38a.

  The main body right housing 3Hr and the grip right housing 5Hr, and the main body left housing 3Hl and the grip left housing 5Hl, which are temporarily assembled in this way, are functional components described above, namely, the fan F, the heater H, After incorporating the motor M, the ion generator I, the first to third switches 6, 61, 62, the power cord 7, etc., the main body right housing 3Hr and the main body left housing 3Hl are brought into contact with each other, and the grip right housing 5Hr The grip left housing 5Hl is butted and the respective butted portions are joined.

  At this time, the tip of the cylindrical shaft 56 protruding from the inside of the insertion hole 36 formed in the main body left housing 3Hl is inserted into the stepped hole 52 of the grip right housing 5Hr as shown in FIG. Thus, a fixing screw (or a bolt) may be inserted into the center hole 52b of the stepped portion 52a from the outside (left side in the figure) and screwed into the center hole 56a of the cylindrical shaft 56 to be tightened. Accordingly, the main body right housing 3Hr and the grip right housing 5Hr, and the main body left housing 3Hl and the grip left housing 5Hl are fixed to each other at the connecting portion 4.

  Further, when the main body left housing 3Hl and the main body right housing 3Hr are brought into contact with each other, the protrusion 39 of the main body right housing 3Hr is closely fitted to the notch 38a of the main body left housing 3Hl, and the lower portions of both the housings 3Hl and 3Hr are fitted. Alignment is performed.

  The body part 3 and the grip part 5 assembled in this way are connected via the moderation mechanism 4 so as to be relatively rotatable between the extended state and the folded state of the grip part 5. Then, as the main body part 3 and the grip part 5 are relatively rotated around the moderation mechanism 4, the rotating ring 10 and the click ring 20 are relatively rotated. Then, the first convex portion 12 of the rotating ring 10 and the second convex portion 22 (the lid-shaped convex portion 22a and the click convex portion 22b) of the click ring 20 are moved so as to be able to overcome each other with pressure contact. It will be.

  That is, as shown in FIG. 10, when the grip portion 5 is extended when the hair dryer 1 is used, the first convex portion 12 gets over the bump 22c on the click convex portion 22b side of the lid-shaped convex portion 22a and is adjacent. It is located at the center between the mating lid-shaped convex portions 22a, and the extended state of the grip portion 5 is maintained in this state. In this extended state, the first stopper portion S1 and the second stopper portion S2 are also effective.

  Further, as shown in FIG. 11, when the use of the hair dryer 1 is finished and the grip portion 5 is folded, the first convex portion 12 can get over the click convex portion 22b to obtain a click feeling. At this time, the first stopper portion S1 and the second stopper portion S2 are effective at the position where the first convex portion 12 gets over the click convex portion 22b, and the relative rotation between the rotating ring 10 and the click ring 20 is stopped. The folded state of the grip part 5 is maintained.

  Further, in the present embodiment, the click ring 20 is formed of a material having higher strength than the grip right housing 5Hr (grip part 5) provided integrally in the rotation direction. That is, the left and right housings 3Hl and 3Hr of the main body 3 and the left and right housings 5Hl and 5Hr of the grip part 5 are integrally formed by injection molding using synthetic resin as a material, but the click ring 20 is also integrally formed by synthetic resin. In the case of molding, the click ring 20 is formed using a synthetic resin material having higher strength than the synthetic resin material of the grip portion 5. In this case, the click ring 20 can be formed using a metal such as aluminum, but is preferably formed using a synthetic resin having high strength in terms of workability and cost.

  Further, the click ring 20 is integrally supported by the grip right housing 5Hr in the rotation direction. The grip right housing 5Hr has a non-contact portion that does not contact the outside (outer periphery) of the click ring 20 as shown in FIG. 58 is provided. That is, the click ring 20 is integrated with the grip right housing 5Hr in the rotation direction by fitting the engaging convex portion 23 into the recess 53 provided inside the circular protruding portion 51 as described above. At this time, the outer periphery of the circular protrusion 51 is substantially flush with the tip surface of the recess 53 to form a non-contact portion 58, and a portion that contacts the outer periphery of the click ring 20 is eliminated.

  On the other hand, instead of providing the non-contact portion 58 of the click ring 20 in the grip right housing 5Hr as described above, in the present embodiment, a holding portion 32a for holding the outside of the click ring 20 is provided in the main body right housing 3Hr. It has become. The holding portion 32 a is formed by the outer peripheral wall 32 a of the circular recess 32 using the circular recess 32 in which the boss portion 33 is formed.

  Furthermore, in this embodiment, as shown in FIG. 11, it is located outside the click ring 20 between the main body portion 3 and the grip portion 5, and a predetermined rotation between the main body portion 3 and the grip portion 5 is performed. An outer folding stopper portion S3 for restricting the moving state is provided. The folding stopper portion S3 includes a projecting portion 40 that extends further downward from the front lower end portion of the grip connecting portion 31 of the main body portion 3, a receiving seat 59 provided on the rear inner surface of the grip portion 5, It becomes a stopper when the grip part 5 is folded.

  As shown in FIGS. 4 and 6, the protruding portion 40 is provided as a divided protruding portion 40 a, 40 b that is divided into the main body right housing 3 Hr and the main body left housing 3 Hl, and the both housings 3 Hr, 3 Hl are abutted with each other. Thus, the halved protrusions 40a and 40b are joined to form a tongue-like protrusion 40 having a tip protruding in an arc shape.

  On the other hand, as shown in FIG. 7, the receiving seat 59 is provided as a trapezoidal cross section on the rear inner surface of the grip right housing 5Hr. At this time, the receiving seat 59 is formed to have a height that combines the depth of the grip right housing 5Hr and the depth of the grip left housing 5Hl. Accordingly, the receiving seat 59 is disposed over the entire inner width of the grip portion 5 by abutting the two housings 5Hr and 5Hl, and the protruding portion 40 can be reliably received by the seat 59 when the grip portion 5 is folded. It can be done. As shown in FIG. 1, the upper part on the front side of the grip portion 5 is a recessed shape portion 5 a that follows the shape of the protruding portion 40.

  In addition, as shown in FIG. 10, in the state which extended the grip part 5, the rear side lower end part 31a of the connection part 31 is contact | abutted to the rear side upper end part 5b of the grip part 5, The rear lower end portion 31a and the rear upper end portion 5b constitute an outer extension stopper portion S4 when the grip portion 5 is extended.

  Here, in this embodiment, as shown in FIG. 12, in the rotating ring 10, the radial thickness t1 of the portion 10K provided with the first protrusion 12 is the radial thickness of the other portion 10N. It is formed thicker than t2, and t1> t2. That is, in order to make the thicknesses t1 and t2 different in this way, the shape along the outer periphery of the rotating ring 10 is circular, and the shape along the inner periphery is the action direction of the load R (upper and lower in the figure). The direction is an ellipse having a minor axis.

  Further, a locking projection 11 serving as a locking portion that is locked to the engaging groove 33a of the boss portion 33 provided in the main body 3 is provided inside the portion 10N where the thickness t2 of the rotating ring 10 is reduced. Yes. At this time, a plurality of first protrusions 12 and locking protrusions 11 are provided in the circumferential direction of the rotating ring 10.

  That is, in the present embodiment, the first convex portion 12 is provided at two places on one straight line L1 passing through the center of the rotating ring 10, and the locking projection 11 is disposed substantially at right angles to the straight line L1. Two points are provided on one straight line L2 passing through the center of the rotating ring 10. Of course, in this case, the lid-shaped convex portion 22a and the click convex portion 22b constituting the second convex portion 22 are provided in pairs corresponding to the pair of first convex portions 12, respectively. The mating grooves 33a are also formed at two locations on one straight line passing through the center corresponding to the locking projections 11.

  With the above configuration, according to the hair dryer 1 of the present embodiment, the rotating ring 10 fixed to the main body 3 and the click ring 20 fixed to the grip 5 are relatively rotated, and the rotating ring 10 When the first convex portion 12 and the second convex portion 22 of the click ring 20 get over each other, the load R due to the pressure contact between the first convex portion 12 and the second convex portion 22 is input to the rotating ring 10.

  At this time, in the present embodiment, the radial thickness t1 of the portion 10K where the first convex portion 12 of the rotating ring 10 is provided is thicker than the radial thickness t2 of the other portion 10N. The strength is increased at the portion 10K where the thickness t1 is increased, and the repulsive force of the rotating ring 10 can be increased.

  That is, as shown in FIG. 13, in the case of the conventional rotating ring 100 having a substantially constant wall thickness, the inside of the portion 10K provided with the first convex portion 12 and the portion 10N provided with the locking projection 11 Although 10R and 10P in which stress is concentrated on the outside in the vicinity are seen, in the case of the rotating ring 10 of the present embodiment, the strength of the portion 10K where the thickness t1 is increased is increased, as shown in FIG. Further, it is understood that the stress concentrated on the 10R and 10P portions has been reduced.

  Therefore, even when the bending deformation of the rotating ring 10 is repeated each time the grip portion 5 is folded, the rotating ring 10 is plastically deformed due to repeated fatigue. It can be suppressed without changing. As a result, the rotary ring 10 can be formed by the same processing, for example, injection molding, using the same material as the conventional one, so that the grip portion 5 can be rattled while facilitating the formation of the rotary ring 10. Can be suppressed.

  In addition, according to the present embodiment, the locking protrusion 11 for locking the rotating ring 10 to the boss portion 33 of the main body 3 in the rotating direction inside the portion 10N where the thickness t2 of the rotating ring 10 becomes thin. Therefore, the stress generated when the load R is applied to the rotating ring 10 is concentrated on the portion 10N where the thickness t2 is reduced, but the stress is supported by the boss portion 33 via the locking portion. Can be made. As a result, the rotation ring 10 is prevented from being greatly deformed by the load R, and the original function of the first convex portion 12 and the second convex portion 22, that is, holding of the grip portion 5 and generation of a click feeling are ensured. it can.

  Furthermore, according to the present embodiment, since the first convex portion 12 and the locking projection 11 are provided at a plurality of locations in the circumferential direction of the rotating ring 10, the periphery of the location where the load R acts and the location where the stress is supported are provided. Since the direction interval can be shortened, the deformation of the rotating ring 10 can be further suppressed.

  In addition, according to the present embodiment, the first convex portion 12 and the locking projection 11 are provided at two locations on each of the straight lines L1 and L2 corresponding to each passing through the center of the rotating ring 10, so that the load R The part where the stress acts and the part where the stress concentrates are opposed positions across the center of the rotating ring 10. As a result, the load R and stress can be canceled with each other by the continuous annular portion of the rotating ring 10, and the eccentric force acting on the rotating ring 10, that is, the force pressing the rotating ring 10 against one side of the boss portion 33 is suppressed. Therefore, the supportability of supporting the rotating ring 10 with the main body 3 can be improved.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention. For example, in the above embodiment, in order to make a difference between the radial thickness t1 of the portion 10K provided with the first protrusion 12 and the radial thickness t2 of the other portion 10N, the outer circumference of the rotating ring 10 is changed. The shape along the inner periphery is a circular shape, and the shape along the inner periphery is an elliptical shape in which the acting direction of the load R (vertical direction in the figure) is a short axis. As shown in the modification of FIG. The shape along the inner periphery of the rotating ring 10 may be circular, and the shape along the outer periphery may be elliptical.

  Moreover, in the said embodiment, when the grip part 5 is extended with respect to the main-body part 3 and the 2nd convex part 22 of the quick ring 22 is used, it is a lid which receives the 1st convex part 12 in a center part. Although it is configured by the bump-shaped convex portion 22a and the click convex portion 22b provided at a position displaced by the folding angle θ1 of the grip portion 5 with respect to the lid-shaped convex portion 22a, the modification shown in FIGS. As described above, a lid-like convex portion 22a may be provided at the position of the click convex portion 22b, and the first convex portion 12 may be sandwiched and supported at both the use position and the folding position.

  Moreover, in the said embodiment, although the rotation ring 10 was formed in cyclic | annular form, you may make it other shapes, such as semicircle shape, for example.

  In the above embodiment, the rotary ring 10 is provided integrally with the main body 3 in the rotational direction, and the click ring 20 is provided integrally with the grip portion 5 in the rotational direction. 10 may be provided on the grip portion 5 side, and the click ring 20 may be provided on the body portion 3 side.

  Furthermore, although the hair care device has been described as the hair dryer 1 in the above embodiment, the present invention can be applied to any hair care device in which a foldable grip portion is connected to a body portion having a hair care function. it can.

1 Hair dryer (hair care equipment)
3 Body 3Hr Body housing (one member)
5 Grip part 5Hr Grip housing (the other member)
10 Rotating ring (first engaging body)
11 Locking protrusion (locking part)
12 1st convex part 20 Click ring (2nd engaging body)
22 2nd convex part 31 Connection part C Rotation center axis R Load

Claims (6)

A main body housing, a grip housing rotatably attached to a connecting portion of the main body housing, and a moderation mechanism for restricting the rotation of the grip housing relative to the main body housing at each of a use position and a folding position,
The moderation mechanism is provided on any one member of the main body housing and the grip housing, and includes a first engagement body having a first protrusion projecting in a direction orthogonal to the rotation center axis, A second engagement body having a second protrusion that is provided on the other member so as to be relatively rotatable with respect to the one engagement body, and that can be overcome by mutual contact with the first protrusion; A hair care device comprising:
The hair care device is characterized in that the first engaging body is formed such that a radial thickness of a portion provided with the first convex portion is thicker than a radial thickness of other portions. .   The hair care device according to claim 1, wherein the first engagement body is formed in an annular shape centering on the rotation center axis. The first protrusion is provided on the outer periphery of the first engagement body, and the second engagement body is disposed to face the outer periphery of the first engagement body,
The hair care device according to claim 2, wherein the second convex portion is provided in a portion of the second engaging body facing the outer periphery of the first engaging body.   4. A locking portion for locking the first engagement body to the one member is provided inside a portion where the thickness of the first engagement body is reduced. The hair care apparatus of any one of these.   The hair care device according to claim 4, wherein a plurality of the first convex portions and the locking portions are provided in the circumferential direction of the first engaging body.   5. The hair care device according to claim 4, wherein the first convex portion and the locking portion are provided in two places on one straight line corresponding to each passing through the center of the first engagement body.

Images