Hair dryer

Abstract

A hair dryer is characterized by comprising: a main body including, in the front thereof, an air discharge part for discharging air; and an accessory tuyere coupled to the air discharge unit. The air discharge part comprises: an annular discharge hole located in the front of the main body; and a discharge flow path extending rearward from the discharge hole and expanding. The cross section of the discharge flow path is trapezoidal, and the strength and the air volume of air discharged from the air discharge part can be improved.

Description

Technical Field

[0001] The invention relates to a hair dryer. Background Art

[0002] In order to remove a required amount of moisture from wet human hair or to style hair from a current style to a desired style, a hair dryer that discharges gas through a gas discharge portion can be used.

[0003] A fan unit for flowing gas may be built inside the hair dryer, and the hair dryer including such an internal structure may be designed in consideration of its own load, etc., so that it can be used conveniently by the user.

[0004] The heater module is located in the head, and if the temperature of the housing also rises due to the heat of the heater module, there may be a risk of burns, and it may also affect internal components such as the control unit. Therefore, a structure is required that can transfer all the heat of the heater module to the air passing through the flow path rather than to the outside or other parts.

[0005] In particular, a built-in battery is required for wireless use, and additional space for installing the battery must be ensured in the hair dryer. In addition, a hair dryer is required that can be equipped with additional components such as an ion generator to expand the function and that can be combined with accessories.

[0006] However, since the hair dryer is used by hand, it is necessary to achieve an optimal configuration with a minimum number of components so as not to increase the size or weight due to adding multiple functions. Summary of the invention

[0007] Problem that the invention aims to solve

[0008] An object of the present invention is to provide a hair dryer including a nozzle coupling portion that can easily assemble a nozzle to an air discharge portion.

[0009] Another object of the present invention is to provide a hair dryer having improved strength and air volume of air discharged from an air discharge portion.

[0010] Technical solutions to the problem

[0011] The present invention provides a hair dryer, characterized in that it includes: a main body, including an air outlet portion for discharging air at the front; and an accessory nozzle, which is combined with the air outlet portion, and the air outlet portion includes: a ring-shaped outlet hole, which is located in front of the main body; and an outlet flow path, which extends and expands backward from the outlet hole; the cross-section of the outlet flow path constitutes a trapezoidal shape.

[0012] The length of the discharge flow path may be 2.6 times or more and 2.7 times or less of a front end width of the discharge flow path.

[0013] The rear end width of the discharge flow path may be 1.8 times or more and 2 times or less of the front end width of the discharge flow path.

[0014] The present invention may include a heater module located behind the air discharge portion of the main body, and the air discharge portion may include a curved surface portion extending from the heater module toward the discharge flow path.

[0015] The heater module may include: a cylindrical heating coil; a plurality of support walls radially arranged on the outer side of the heater core; a heating coil wound around the outer end of the support wall; and an air cutting portion formed at the front end corners of at least a portion of the plurality of support walls corresponding to the shape of the curved portion.

[0016] The present invention may include: a main body, including a head magnet located in the front and an air outlet portion located at the periphery of the head magnet and discharging air; and an accessory nozzle combined with the air outlet portion; the accessory nozzle may include: a nozzle frame, including a fluid inlet, a fluid outlet and a nozzle flow path, the fluid inlet is for air to flow in, the fluid outlet is for air to be discharged, and the nozzle flow path extends from the fluid inlet to the fluid outlet; an intermediate frame, located at the center of the fluid inlet of the nozzle frame and connected to the nozzle frame by a frame bridge; a nozzle magnet, arranged on the intermediate frame and combined with the head magnet; and a ring-shaped silicone guide, protruding toward the back side at the periphery of the nozzle magnet.

[0017] The air discharge portion may be formed at a position corresponding to a ring-shaped gap between the intermediate frame and the outer ring frame.

[0018] The main body may include a ring-shaped nozzle coupling groove corresponding to the silicone guide on the periphery of the head magnet.

[0019] The silicone guide may include: a mold portion disposed on the middle frame; and a silicone portion double-injected to the mold portion; and the silicone portion may surround an end portion of the mold portion in a U-shape.

[0020] The tuyere may include: a tuyere screw penetrating through the tuyere magnet and the silicone guide to be fastened to the middle frame; and a magnet cover covering a head of the tuyere screw and the tuyere magnet.

[0021] The fluid outlet of the nozzle frame may have a rectangular shape that is long in one direction, and the middle frame may protrude forward in a conical shape and include frame wings that expand in the one direction.

[0022] The front dimension of the nozzle flow path of the nozzle frame may be smaller than or equal to the rear dimension.

[0023] The hair dryer includes a nozzle housing inserted from the front to the rear of the nozzle frame to cover the outer side surface of the nozzle frame.

[0024] The nozzle frame may include an outer ring frame located at the periphery of the fluid inlet and coupled to the periphery of the discharge hole of the main body. The outer ring frame may include an elastic material and be fastened to the frame bridge of the middle frame.

[0025] The accessory air nozzle may include a central support rib located in the center of the width direction of the air nozzle frame, and the air nozzle flow path may include: a straight section extending forward from the fluid inlet; and an expansion section extending from the straight section to the fluid outlet, and the angles of the side walls located on both sides of the width direction are greater than those of the straight section.

[0026] A front end of the straight section may be located on the same line as the central supporting rib in the width direction.

[0027] Effects of the Invention

[0028] The hair dryer of the present invention can easily assemble the accessory nozzle to the air discharge portion.

[0029] In addition, the hair dryer of the present invention can increase the strength and volume of wind blown out from the air discharge portion.

[0030] In addition, the hair dryer of the present invention can provide undivided high-speed and high-heat air by improving the shape of the nozzle flow path of the attachment nozzle.

[0031] Effects that can be obtained in the present invention are not limited to the above-mentioned effects, and those skilled in the art can clearly understand other effects that are not mentioned from the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 1 is a front perspective view showing a hair dryer according to an embodiment of the present invention.

[0033] Figure 2 1 is a rear perspective view showing a hair dryer according to an embodiment of the present invention.

[0034] Figure 3 1 is a cross-sectional view showing the interior of a hair dryer according to an embodiment of the present invention.

[0035] Figure 4 It is an exploded perspective view of a head assembly of a hair dryer according to an embodiment of the present invention.

[0036] Figure 5 It is a cross-sectional view of the head of the hair dryer of the present invention.

[0037] Figure 6 This is a diagram showing an air discharge portion of a hair dryer according to another aspect of the present invention.

[0038] Figure 7 It is shown Figure 6 (b) is a diagram of the discharge flow path of the embodiment.

[0039] Figure 8 This is a diagram showing a state where a hair dryer according to an embodiment of the present invention is combined with a nozzle module.

[0040] Fig. 9 It is a figure which shows the nozzle joint part of the hair dryer main body and the attachment nozzle of this invention.

[0041] Fig.10 Another example of the accessory nozzle of the hair dryer of the present invention is shown.

[0042] Fig.11 and Fig.12 It is an exploded perspective view of the accessory nozzle of the hair dryer of the present invention.

[0043] Fig.13 is a cross-sectional view of an accessory air nozzle according to an embodiment of the present invention, taken along Fig. 9 Cross section of BB.

[0044] Fig.14 1 is a perspective view showing an attachment nozzle of a hair dryer according to an embodiment of the present invention.

[0045] Fig.15 It is a diagram showing another embodiment of the attachment nozzle of the present invention.

[0046] Fig.16 is along Fig.15 Cross-sectional view of CC.

[0047] Fig.17 1 is a diagram showing the flow of fluid depending on the presence or absence of a straight section of an attachment nozzle according to an embodiment of the present invention.

[0048] Fig.18 It is an exploded view of another embodiment of the accessory nozzle of the present invention. DETAILED DESCRIPTION

[0049] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention.

[0050] However, the present invention can be implemented in various forms and is not limited to the embodiments. In addition, in order to clearly illustrate the present invention in the drawings, parts not related to the description are omitted, and similar parts are given similar reference numerals throughout the specification.

[0051] In this specification, repeated description of the same components is omitted.

[0052] In addition, in this specification, when it is mentioned that a certain component is "coupled" or "connected" to another component, it should be understood that it can be directly coupled or connected to the other component, but other components may exist between them. On the contrary, in this specification, when it is mentioned that a certain component is "directly coupled" or "directly connected" to another component, it should be understood that no other components exist between them.

[0053] In addition, the terms used in this specification are used only to describe specific embodiments and are not intended to limit the present invention.

[0054] Furthermore, in the present specification, an expression in the singular may include an expression in the plural unless the context clearly indicates otherwise.

[0055] In addition, in this specification, the terms "including" or "having" etc. should be understood as intending to indicate the existence of the features, numbers, steps, actions, structural elements, parts or their combinations disclosed in this specification, and are not intended to preclude the existence or additional possibilities of one or more other features, numbers, steps, actions, structural elements, parts or their combinations.

[0056] In addition, in this specification, the term "and / or" includes a combination of a plurality of items or any one of the plurality of items. In this specification, "A or B" may include "A" or "B" or "A and B".

[0057] The present invention relates to a portable device that can be used by a user, which refers to an electronic device that is small in size and can be used by a user. Since the portable device is not used in a laid-down state but is directly held by the user, it needs to be light in weight, and the grip of the handle 102 is important. In addition, since pollutants and the like can easily flow in from the outside, a waterproof function may be required.

[0058] The portable device of the present invention relates to a beauty device, and as a representative example, a hair dryer 100 for hair care can be taken as an example. Although the description is based on the hair dryer 100, it is not limited to this, and the present invention can also include portable devices such as skin beauty devices or body care devices that users hold and use.

[0059] Figure 1 1 is a front perspective view showing a hair dryer 100 according to an embodiment of the present invention. Figure 2 FIG. 1 is a back perspective view of a hair dryer 100 according to an embodiment of the present invention. Figure 3 is a cross-sectional view of a hair dryer 100 according to an embodiment of the present invention, taken along Figure 2 A cross section of AA.

[0060] The x-axis in the figure indicates the left-right direction, the y-axis indicates the front-back direction, and the z-axis indicates the up-down direction. When viewed from the front, +x is the right side, and -x is the left side. +y is the front, -y is the back, +z is the top, and -z is the bottom.

[0061] The hair dryer 100 according to an embodiment of the present invention includes a main body composed of a head 101 and a handle 102. An air inlet 104 for air to flow in from the outside is provided below the handle 102, and the head 101 includes an air outlet 103 for discharging air.

[0062] The main bodies 101 and 102 of the hair dryer 100 include an air flow path from the air inlet 104 to the air outlet 103 . The air flow path of the present invention is not a straight flow path, but moves in the vertical direction at the handle 102 and bends in the horizontal direction at the head 101 .

[0063] The air inlet 104 may be located below the handle 102, and the air outlet 103 may be located in front of the head 101. The handle 102 and the head 101 have shapes corresponding to the extending direction of the air flow path. For ease of use, the handle 102 may extend in a direction slightly inclined forward from the vertical direction relative to the head 101.

[0064] The handle 102 may be configured as a cylinder having a diameter that a user can grasp with his hand, and the head 101 may be configured as a cylinder having a larger diameter than the handle 102. The handle 102 may have the same diameter from the bottom to the top, and the head 101 may have a slightly smaller diameter at the front in order to guide the wind to be discharged toward the air discharge portion 103.

[0065] The air inlet 104 may include an air inlet hole 1283 formed along the periphery of the handle 102 and may include a filter 1293 to prevent foreign matter such as dust from flowing in. A filter frame to which the filter 1293 is fixed may be located at the lower portion of the handle 102 and constitute the air inlet 104 .

[0066] The filter 1293 is made of a material different from the housings 111 and 121 that constitute the appearance of the hair dryer 100. Since it is a thin film-shaped component, it may be damaged by external impact. Therefore, a filter cover 128 for protecting the filter 1293 may be included. In order to clean and replace the filter 1293, the filter cover 128 may be configured to be detachable.

[0067] The air outlet 103 may be located in front of the head 101 and include a circular opening. Figure 3As shown, the heating coil of the heater module 150 of the present invention is configured in a circular ring shape with a hollow central portion, and the air discharge portion 103 may have a corresponding ring shape.

[0068] Reference Figure 3 The head shell 111 forming the appearance of the head 101 is a cylindrical member which is open at the front and rear. For the flow of air, the head shell 111 can be constructed to have a slightly smaller diameter at the front.

[0069] A heater module 150 for heating air and a substrate module 130 for controlling the hair dryer 100 may be provided inside the head housing 111. In the substrate module 130, a plurality of printed circuit boards 132 may form a layered structure and be stacked, and a display 135 for providing information on the operating status of the hair dryer 100 to the user and for touch input may be provided behind the substrate module 130.

[0070] In addition to the substrate module 130 , the handle portion 102 is also provided with a switch substrate for buttons and a substrate of the air motor 171 . For convenience of description, the substrate of the substrate module 130 is referred to as a head substrate 132 .

[0071] The heater module 150 and the substrate module 130 of the head 101 can be combined via the head frame 112 to form a head assembly 114. The head 101 can be assembled by inserting the combined head assembly 114 from the rear to the front of the head housing 111.

[0072] The heater module 150 may be disposed in front of the head 101 based on the handle connection portion 1115 , and the substrate module 130 may be disposed in the rear.

[0073] The heater module 150 may include a coil 156 that receives power to heat the air. The coil 156 may have a larger resistance to increase the amount of heat generated, and may be wound in a spiral or bent in a serpentine shape to maximize the contact area with the air.

[0074] In this embodiment, a coil 156 is used which is spirally arranged inside the head 101. The coil 156 is a heating coil in a serpentine shape which extends radially inward and then bends to extend outward.

[0075] Since the heating coil of the heater module 150 is arranged in a ring shape, an empty space is formed in the center portion. The heater module 150 of the present invention can use the space by arranging the ion generator 158 that generates ions inside the coil 156.

[0076] The substrate module 130 may be disposed away from the heater module 150 toward the rear side. The space between the heater module 150 and the substrate module 130 provides a space for the air supplied from the handle portion 102 to be supplied to the heater module 150 by changing the path, and the space may protect the substrate module 130 from the heat of the heater module 150. In addition, since the heat generated in the substrate module 130 is cooled by the cold air supplied from the handle portion 102, the heating problem of the substrate module 130 does not occur.

[0077] The handle connection part 1115 combined with the upper end of the handle part 102 may be located at the central portion of the head 101. The handle connection part 1115 of the head housing 111 into which the upper end of the handle part 102 is inserted may be located at the lower portion of the cylindrical member.

[0078] The handle portion 102 may include a handle frame 122 on which various components are mounted, and a handle housing 121 surrounding the outside of the handle frame 122 and forming an appearance. The handle portion 102 may include an air motor 171 that guides air flow so that air flows in from an air inflow portion 104 located at a lower portion of the handle portion 102.

[0079] A power input cable 191 connected to an external power source is connected to the lower portion of the handle portion 102 , and the inside of the handle portion 102 may include a power connection cable 192 connected to the head substrate 132 of the head portion 101 through connection with the power input cable 191 .

[0080] In order to prevent the portion connected to the lower end of the handle portion 102 from being bent and disconnected, the power input cable 191 may include disconnection prevention ribs 1912 extending radially from the power input cable 191 .

[0081] The handle 102 implements the representative functions of the hair dryer 100 operated by the user with the physical buttons 162 and 166. The handle 102 may include a power button 162 for turning the power on / off and an action button 166 for adjusting the wind intensity or temperature. The power button 162 may be located at the front of the handle 102, and the action button 166 may be located at the rear of the handle 102.

[0082] The button can be a push switch, a toggle switch, a sliding switch 1625, etc. In this embodiment, the power button is implemented in a sliding manner, and the function change is implemented in a push button form.

[0083] The air motor 171 located below the button portions 162 and 166 forces air to flow in through the air inlet portion 104 located at the lower end of the handle portion 102 and to be discharged from the air outlet portion 103. Since the air motor 171 may generate vibration and noise, a motor damper 173 made of an elastic material surrounding the outer peripheral surface of the air motor 171 can be used to suppress the vibration and noise.

[0084] Figure 4 FIG. 1 is an exploded perspective view of a head assembly 114 of a hair dryer 100 according to an embodiment of the present invention. Figure 5 1 is a cross-sectional view of a head portion 101 of a hair dryer 100 according to the present invention.

[0085] The head assembly 114 may include a heater module 150 that heats air flowing in from the handle and a base module 130 on which a control unit for controlling the hair dryer 100 is mounted. The heater module 150 and the base module 130 may be fastened by the head frame 112 .

[0086] The head frame 112 includes: an air discharge guide 112a for guiding air to the air discharge portion 103 in the front; and a heater storage portion 112b for accommodating the heater module 150. A head groove 1127 for fastening to the substrate module 130 may be provided at an end portion 112d extending rearward from the heater storage portion 112b. The heater storage portion 112b is separated from the head groove 1127 by 112c, and as a position corresponding to the handle connection portion 1115, the head frame 112 includes a handle fastening hole 1125 arranged to overlap the handle connection portion 1115.

[0087] The handle fastening hole 1125 is a portion for the air rising along the handle portion 102 to flow into the head portion 101. Figure 4 As shown, the head frame 112 has a portion including a handle fastening hole 1125 and is open at the rear. When the substrate module 130 is combined with the head frame 112, the handle fastening hole 1125 can be formed by the substrate module 130 covering the open rear end of the handle fastening hole 1125.

[0088] The discharge air guide 112a located in front of the head frame 112 may include: a ring-shaped discharge hole 1122 for discharging the air heated by the heater module 150; and a front portion 1112, wherein a nozzle joint portion 113 is disposed at the center of the discharge hole 1122. Figure 5 As shown, the discharged air guide 112a may include a discharge flow path 1123 having a narrowed inclined surface in order to increase the speed of the discharged wind.

[0089] The head frame 112 extends to the rear of the heater module 150, and the rear is open so that the heater module 150 can be inserted. The head hook hole 1128 located at the rear end of the heater module 150 is fastened to the head hook 1318 of the head frame 112. The head hook hole 1128 formed at the rear end of the head frame 112 is fastened to the head hook 1318 formed on the outer side surface of the substrate frame 131 to form the head assembly 114.

[0090] The heater module 150 may include a plurality of support walls 153, 154 radially inserted into the outer side of the cylindrical heater core 151, and may include a heating coil 156 wound around the periphery of the support wall. The heating coil 156 is wound in a spiral shape and forms two layers in the radial direction. The radial length of the first support wall 153 supporting the outer coil 1561 is longer than the radial length of the second support wall 154 supporting the inner coil 1562.

[0091] The interior of the heater core 151 may provide a space for arranging components such as the ion generator 158, and the wiring 1582 of the ion generator and the wiring 1592 of the temperature sensor located in the front may extend from the interior of the heater core 151 to the back of the heater core 151. The heater module 150 includes a ring-shaped heater flow path located on the outer periphery of the heater core 151. A cylindrical inner heat insulating cover 1512 and an outer heat insulating cover 152 may be provided on the inner and outer sides of the heater flow path so that heat is not transferred to the outside of the heater flow path. The inner heat insulating cover 1512 and the outer heat insulating cover 152 may use a material with low thermal conductivity such as mica.

[0092] The nozzle coupling portion 113 located in the center of the exhaust air guide 112a can be coupled to the front side of the heater core 151 and may include: a head magnet 1132 coupled to the accessory nozzle 200; a magnet seating portion 1311 for seating the head magnet 1132; a screw 1137 for fixing the magnet seating portion 1311 to the head frame 112; and a magnet cover 1134 for covering the head magnet 1132.

[0093] A ring frame 1135 may be included around the head magnet 1132 , and a ring nozzle coupling groove 1136 for guiding the position of the accessory nozzle 200 may be formed between the head magnet 1132 and the ring frame 1135 .

[0094] like Figure 7As shown, the plurality of head substrates 1321, 1322, 1323 of the substrate module 130 are configured to form a layered structure, and may include cylindrical substrate frames 1311, 1312 for receiving the head substrates 1321, 1322, 1323. In order to receive the plurality of head substrates 1321, 1322, 1323, the substrate frames 1311, 1312 may be composed of a plurality of pieces, and are assembled to form one substrate module 130.

[0095] In the case of mounting components that are greatly affected by electromagnetic waves such as antenna 134a, it is necessary to shield electromagnetic waves. In order to avoid interference between components mounted between the plurality of substrates 1321, 1322, 1323, and to prevent the pressure of strong wind from exerting pressure on the display unit 135 at the rear, an intermediate substrate frame 1313 may be included between the head substrates 1321 and 1322.

[0096] like Figure 2 As shown, a touch screen display 135 may be disposed on the back of the substrate module 130 , and a rear end of the substrate module 130 may be exposed to the rear of the head frame 112 to form an appearance of the rear of the head 101 .

[0097] The head housing 111 includes openings at the front and rear, and may include a front sealing ring 1128 located in front of the head assembly 114 and a rear sealing ring 137 located at the rear, so that wind does not flow out through a gap between the head assembly 114 and the head housing 111 .

[0098] The front sealing ring 1128 is located at the discharge air guide 112a. Since the front portion 1112 of the head shell 111 includes the annular front portion 1112 arranged along the edge, the front sealing ring 1128 can be located between the discharge air guide 112a of the head frame 112 and the annular front of the head shell 111, and overlapped in the front-to-back direction.

[0099] like Figure 4 As shown, the rear sealing ring 137 may be located at the outer periphery of the substrate frame 131 of the substrate module 130. Figure 5 As shown, the rear seal ring 137 is arranged to overlap the head housing 111 and the substrate module 130 in the radial direction.

[0100] Figure 6 1 is a diagram showing the air outlet 103 of the hair dryer 100 according to another aspect of the present invention. The hair dryer 100 may include a ring-shaped outlet hole 1122 at the front, and may include an outlet flow path 1123 connected to the heater module 150 inside the outlet hole 1122.

[0101] The discharge flow path 1123 may be located at the head frame 112 and at the front end of the heater housing portion 112 b. The head frame 112 may include a curved surface portion 1121 that compensates for the size difference between the discharge flow path 1123 and the flow path of the heater module 150.

[0102] exist Figure 6 In (a), the tip of the gently curved surface portion 1121 extending from the heater module 150 includes the air discharge portion 103 in a form directly connected to the discharge hole 1122. This is a form in which the discharge flow path 1123 is shortened or omitted.

[0103] exist Figure 6 In (b), the rear end of the discharge hole 1122 may include a discharge flow path 1123 that is gradually narrowed. Figure 6 As shown in (b), the discharge flow path 1123 having a trapezoidal cross section can increase the strength of the wind discharged through the discharge hole 1122 by ensuring a predetermined flow path length and gradually reducing the size of the flow path.

[0104] Figure 7 It is shown Figure 6 (b) is a diagram of the discharge flow path 1123 of the embodiment. The discharge flow path 1123 can be defined based on the cross-sectional shape of the discharge flow path 1123. The width of the front end of the discharge flow path 1123 is similar to the width of the discharge hole 1122, and the width of the rear end of the discharge flow path 1123 that contacts the curved surface portion 1121 extending from the heater accommodating portion 112b is wider than the front end (a <b)。

[0105] If you connect the front end and the back end, Figure 7 As shown, the cross section of the discharge flow path 1123 is formed into a trapezoidal shape. The width b of the rear end can be formed to have a dimension 2.6 to 2.7 times the width a of the front end.

[0106] If the width b of the rear end is too wide compared to the width a of the front end, the effect of increasing the wind speed may be reduced. If the size is small, there is a problem of reduced wind volume. In order to increase the wind volume and wind speed, it is derived that the rear end has a size 2.6 to 2.7 times that of the front end (b = 2.6a to 2.7a) which is the optimal numerical range.

[0107] The length c of the discharge flow path 1123 may be about 1.8 to 2 times the width a of the front end. If the length c of the discharge flow path 1123 is long, the air volume and air speed can be increased, but if the length c of the discharge flow path 1123 is too long, the size of the product may become larger. The present invention is characterized in that the discharge flow path 1123 is extended long toward the rear end within the length range required for the installation space of the nozzle coupling portion 113 of the air discharge portion 103 of the hair dryer 100.

[0108] By having the discharge flow path 1123 with a trapezoidal cross section in the numerical ranges a, b, and c as described above, it is possible to obtain an effect of improving the wind speed and the wind volume. Figure 6 Compared with the embodiment (a), Figure 6 The embodiment (b) can increase the wind speed by about 1.5 m / s, and can also increase the wind volume by 0.03 cmm.

[0109] However, through Figure 6 The discharge flow path 1123 is formed long as in (a), and the curved surface of the head frame 112 can be larger than Figure 6 The form (a) is arranged closer to the heater module 150. In this case, the space between the support wall 154 arranged radially along the flow path of the heater module 150 and the curved surface 1121 may be narrowed.

[0110] Therefore, if Figure 7 As shown, an air cutout portion 1547 that is recessed corresponding to the shape of the curved surface portion 1121 of the head frame 112 may be formed at the front corner of the support wall 154 .

[0111] By forming an air cutout portion 1547 at the front edge of the support wall 154 , the function of the heating coil 156 supporting the support wall 154 can be maintained and a space connected to the discharge flow path 1123 can be ensured.

[0112] Figure 8 The figure shows a state where the main body is combined with an accessory nozzle 200. Fig. 9 1 is a diagram showing the nozzle coupling portion 113 and the accessory nozzle of the hair dryer 100 of the present invention. In order to switch the air discharge mode to the form desired by the user, the air discharge portion 103 can be detachably provided with the accessory nozzle 200 of various forms.

[0113] Although Figure 1 The ring-shaped opening shown in the air discharge portion 103 discharges wind in a wider range to easily dry the hair, but for the purpose of styling or scalp care, it is beneficial to change the discharge form of the wind.

[0114] As described above, in order to change the air discharge form according to the purpose, a detachable accessory nozzle 200 can be used. Since the central part of the air discharge part 103 is a part that does not discharge air, a nozzle coupling part 113 can be arranged. The nozzle coupling part 113 can be provided with a head magnet 1132 coupled to the accessory nozzle 200. The back side of the accessory nozzle 200 can include a nozzle magnet 212 arranged opposite to the head magnet 1132. By selectively attaching and detaching the accessory nozzle 200 in the form of an accessory, the hair dryer 100 can be used for various purposes.

[0115] A fluid inlet 2211 connected to the air outlet 103 of the head 101 is provided at the rear of the accessory nozzle 200, a fluid outlet 2213 is formed at the front of the accessory nozzle 200, and a nozzle flow path 2212 connecting the fluid inlet 2211 and the fluid outlet 2213 is formed inside the accessory nozzle 200. Although the fluid inlet 2211 has a ring shape corresponding to the shape of the air outlet 103, the fluid outlet 2213 may be different depending on the purpose.

[0116] Fig.10 Another example of the accessory nozzle 200 is shown. Fig.10 (a) shows a shaping air nozzle 200b, which has a fluid outlet 2213 that is longer in the width direction and shorter in the height direction to provide stronger wind in a concentrated manner.

[0117] Or, if Fig.10 As shown in (b), the scalp drying nozzle 200c can be used to disperse the wind over a wide range to dry the scalp. Since the wind is discharged close to the scalp, the speed of the discharged wind can be reduced.

[0118] The styling nozzle 200b and the scalp drying nozzle 200c may also be coupled to the front of the head 101 via the nozzle magnet 212 of the fluid inlet 2211 at the rear.

[0119] Fig.11 and Fig.12 It is an exploded perspective view of the accessory nozzle 200 of the hair dryer 100 of the present invention. Fig.11 This is a picture viewed from the rear. Fig.12 This is a view viewed from the front, and thus the main body of the hair dryer 100 is also shown.

[0120] Fig.13 As a cross-sectional view of an accessory air nozzle 200 according to an embodiment of the present invention, Fig. 9 Cross section of BB. Fig.14 The partial cross-sectional view of the hair dryer 100 as one embodiment of the present invention is a cross-sectional view of a state where the attachment nozzle 200 is coupled to the head 101 .

[0121] The accessory nozzle 200 may include a nozzle frame 221, an intermediate frame 211, and a nozzle magnet 212. The nozzle frame 221 may include a fluid inlet 2211 for air to flow in, a fluid outlet 2213 for air to be discharged, and a nozzle flow path 2212 extending from the fluid inlet 2211 to the fluid outlet 2213.

[0122] The fluid inlet 2211 and the fluid outlet 2213 have different shapes. In this embodiment, the fluid inlet 2211 may be circular, and the fluid outlet 2213 may be a rectangular shape with a longer length in one direction. Fig.13 As shown, the width of the fluid inlet 2211 and the fluid outlet 2213 are similar in width direction. Fig.14 As shown, the fluid inlet 2211 may have a narrower width than the fluid outlet 2213 in the vertical direction.

[0123] The nozzle flow path 2212 may have the following Fig.13 As shown, the width is constant in the horizontal direction, such as Fig.14 A shape that narrows in the vertical direction as shown.

[0124] The middle frame 211 located at the center of the fluid inlet 2211 may be located at the center of the fluid inlet 2211 by a frame bridge 2115 extending radially. The space between the fluid inlet 2211 and the middle frame 211 may be connected to the discharge hole 1122 of the head 101, and the wind discharged from the discharge hole 1122 may flow into the fluid inlet 2211.

[0125] The fluid inlet 2211 is in close contact with the air outlet 103 so that the air discharged from the discharge hole 1122 can be supplied to the accessory nozzle 200 without leakage. The nozzle frame 221 can be provided with a ring-shaped outer ring frame 223 around the fluid inlet 2211, and the outer ring frame 223 contacts the front part 1112 of the head shell 111 located around the discharge hole 1122.

[0126] The outer ring frame 223 has a shape corresponding to the front portion 1112 of the head shell 111, and may have a shape protruding backwards corresponding to the slope of the front portion 1112 of the head shell that is inclined from the periphery toward the center. The outer ring frame 223 may include an elastic material such as silicone so that no gap is generated between the outer ring frame 223 and the front portion 1112 of the head shell.

[0127] The frame bridge 2115 of the middle frame 211 can be combined with the outer ring frame 223. After the frame bridge 2115 is inserted into the groove formed in front of the outer ring frame 223, if the outer ring frame 223 and the nozzle frame 221 are fastened, the middle frame 211 and the nozzle frame 221 can be fastened. Since the outer side of the nozzle frame 221 is covered by the nozzle housing 222, the nozzle screw 224 fastening the nozzle frame 221 and the outer ring frame 223 will not be exposed to the outside.

[0128] The nozzle housing 222 covering the nozzle frame 221 is configured to form a gap with the nozzle cover so as to protect the user from being burned when the user touches the accessory nozzle 200 and to form the appearance of the accessory nozzle 200 .

[0129] Since the fluid inlet 2211 of the nozzle frame 221 is larger than the fluid outlet 2213 , the nozzle housing 222 can be fastened to the nozzle frame 221 by being inserted from the front to the rear of the nozzle frame 221 .

[0130] The nozzle housing 222 and the nozzle frame 221 may be as follows: Fig.14 As shown, the fastening is performed using a hook disposed adjacent to the fluid inlet 2211 so that the fastening structure is not exposed to the outside.

[0131] The middle frame 211 protrudes forward in a conical shape, and can guide the wind flowing in from the circular fluid inlet 2211 to be converted into wind discharged widely in the width direction like the fluid outlet 2213 .

[0132] The middle frame 211 may include frame wings extending in the width direction (the direction in which the length is longer) of the fluid outlet 2213. The frame wings may be as shown in FIG. Fig.14 As shown, it also extends further forward of the middle frame 211.

[0133] The back side of the middle frame 211 may be provided with a nozzle magnet 212 coupled to the head magnet 1132 located at the head 101 , and the middle frame 211 may include a screw boss 2117 for inserting a magnet screw 213 fastened to the nozzle magnet 212 .

[0134] The periphery of the nozzle magnet 212 may include a silicone guide 215 protruding rearward. The silicone guide 215 may protrude further toward the rear direction than the nozzle magnet 212, so that the nozzle magnet 212 and the head magnet 1132 are correctly attached without being misaligned.

[0135] The nozzle coupling portion 113 of the head 101 may include a nozzle coupling groove 1136 introduced toward the rear at the periphery of the head magnet 1132, such as Fig.14 As shown, a silicone guide 215 may be inserted into the nozzle joint 113 .

[0136] When the accessory nozzle 200 is installed and removed from the nozzle coupling portion 113 of the head 101 , if the accessory nozzle 200 is made of injection molding or metal material, noise and wear may be generated. Therefore, the silicone guide 215 may include silicone made of elastic material.

[0137] Since the silicone guide 215 should be inserted into the nozzle coupling portion 113 to fix the accessory nozzle 200 so that it does not move, it needs to have a rigid structure. The silicone guide 215 may include a mold part 2152 composed of an injection molded object to have rigidity.

[0138] like Fig.13As shown, the mold part 2152 includes a receiving portion for accommodating the magnet, and the mold part 2152 may protrude more toward the back than the nozzle magnet 212. The silicone guide 215 may be molded by double injection molding so that the silicone part 2151 surrounds the outer side of the mold part 2152.

[0139] Silicone part 2151 may be configured to surround the end of mold part 2152 in a U shape so as not to be separated from mold part 2152. If a hole is formed in mold part 2152 so that silicone flows into the hole of mold part 2152, the fastening force between silicone part 2151 and mold part 2152 can be increased.

[0140] The mold part 2152 protruding toward the back side of the nozzle magnet 212 is covered by the silicone part 2151 so as not to damage the nozzle coupling part 113, and is inserted into the nozzle coupling groove 1136 of the head 101. In addition, the silicone part 2151 may also be formed at the part where the nozzle magnet 212 is placed.

[0141] When the nozzle magnet 212 is fastened to the middle frame 211 by the screw 213, the silicone part 2151 is pressurized, so that the nozzle magnet 212, the silicone guide 215 and the middle frame 211 can be firmly combined. A magnet cover 214 covering the nozzle magnet 212 and the magnet screw 213 can also be provided on the back of the nozzle magnet 212.

[0142] Fig.15 1 is a diagram showing another embodiment of the attachment nozzle 200 of the hair dryer 100 of the present invention. The attachment nozzle 200 of this embodiment aims to fix the shape of the hair by supplying hot air with high wind speed and high heat concentrated in a narrow area.

[0143] The fluid outlet 2313 of the accessory nozzle 200 of this embodiment is wider in the width direction and narrower in height than the above-mentioned accessory nozzle 200. Therefore, the nozzle frame 231 and the nozzle housing 232 are formed such that the fluid outlet 2313 is further expanded in the width direction than the fluid inlet 2311.

[0144] Since the width in the horizontal direction is wider, the central portion may sag, and thus a central supporting rib 234 may be included in the central portion of the nozzle flow path 2312 . Fig.16 is along Fig.15 The central support rib 234 may be located at a central portion in the width direction and may be closer to the front end than the middle frame 211.

[0145] However, there is a problem that the wind moving from the fluid inlet 2311 toward the fluid outlet 2313 along the conical shape of the middle frame 211 collides with the central support rib 234 and is discharged in a divided manner in the left-right direction.

[0146] In particular, as in the present invention, when the width of the fluid outlet 2313 is large, the nozzle flow path 2312 expands forward, and there is a Fig.17 Therefore, the present invention can divide the nozzle flow path 2312 into a straight section 2312a and an expansion section 2312b to guide the wind to be discharged in a straight line without being separated.

[0147] The straight section 2312a is the portion adjacent to the fluid inlet 2311, and the expansion section 2312b is the portion adjacent to the fluid outlet 2313. In order to compensate for the width difference between the fluid inlet 2311 and the fluid outlet 2313, the nozzle flow path 2312 has an expansion shape, but not at a predetermined inclination, but as Fig.16 As shown, it can be divided into two intervals.

[0148] Although the width of the straight section 2312a in the front-to-back direction is not greatly different, the width difference between the front and rear ends of the expansion section 2312b is larger. Therefore, the angle formed by the two side walls 235 in the width direction of the expansion section 2312b is greater than the angle formed by the two side walls 235 in the width direction of the straight section 2312a.

[0149] The side walls 235 of the straight section 2312a may be parallel (the angle between the two side walls in the width direction is 0°), or may be open within a specified angle (approximately less than 10°). The straight section 2312a may extend to the same line as the front end of the central support rib 234 in the width direction ( Fig.16 Y).

[0150] Since the straight section 2312a guides the wind in a straight direction so that it does not spread, it can be Fig.17 As shown in (b), the wind separation phenomenon caused by the central support rib 234 is reduced.

[0151] Accessory nozzle 200 Fig.10 Therefore, the straight section 2312a and the expansion section 2312b can be realized by changing the thickness of the side wall 235 of the nozzle frame 231, so that the shape of the nozzle flow path 2312 divided into the straight section 2312a and the expansion section 2312b will not be exposed to the outside.

[0152] The sidewall 235 may have the thickest thickness at a boundary Y between the straight section 2312a and the expansion section 2312b.

[0153] Fig.18 FIG. 2 is an exploded view of another embodiment of the accessory nozzle 200 of the present invention.

[0154] like Fig.16 As shown, since the fluid outlet 2313 of the nozzle frame 231 is relatively wide, it is not possible to Fig.13 The nozzle frame 231 is inserted from the rear of the nozzle housing 232 as in the embodiment of the present invention. Fig.18 As shown, it consists of two parts.

[0155] The first nozzle frame 231a includes a fluid inlet 2311 and the rear half of the nozzle flow path 2312, and the second nozzle frame 231b includes a fluid outlet 2313 and the front half of the nozzle flow path 2312. Fig.18 As shown, the first nozzle frame 231 a may have a conical shape, and the second nozzle frame 231 b may be provided with a side wall 235 .

[0156] The first nozzle frame 231 a is inserted from the rear of the nozzle housing 232 , and the second nozzle frame 231 b is inserted from the front of the nozzle housing 232 and fastened, thereby constituting the nozzle frame 231 located inside the nozzle housing 232 .

[0157] The central supporting rib 234 may be provided at a portion of each of the first nozzle frame 231 a and the second nozzle frame 231 b so as to be connected when the first nozzle frame 231 a and the second nozzle frame 231 b are fastened.

[0158] The first nozzle frame 231a and the second nozzle frame 231b can be fastened using hooks and hook grooves. Fig.16 The hook fastening structures 2317, 2318 shown adjacent to and behind the fluid inlet 2311 and as shown in FIG. Fig.18 The central support rib 234 is shown to be fastened by hook fastening structures 2315, 2316 configured adjacent to the central support rib 234.

[0159] The hook fastening structures 2315 and 2316 adjacent to the central support rib 234 can prevent the central support rib 234 from being misaligned, and the first nozzle frame 231 a and the second nozzle frame 231 b can be aligned.

[0160] In the hair dryer 100 of the present invention, the attachment nozzle 200 can be easily assembled to the air discharge portion 103 .

[0161] Furthermore, the hair dryer 100 of the present invention can increase the strength and volume of the wind blown out from the air blowout portion 103 .

[0162] In addition, the hair dryer 100 of the present invention can provide high-speed and high-temperature air that will not be split by improving the shape of the nozzle flow path of the attachment nozzle 200.

[0163] Although the present invention has been described with reference to specific embodiments, it will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the technical concept of the present invention as provided by the appended claims.

Claims

1. A hair dryer, characterized in that: include: A main body including an air discharge portion for discharging air at the front; as well as An accessory air nozzle, combined with the air discharge portion; The air discharge unit comprises: a ring-shaped discharge hole located in front of the main body; and A discharge flow path extending rearward from the discharge hole and expanding; The discharge flow path has a trapezoidal cross section.

2. The hair dryer according to claim 1, characterized in that: The length of the discharge flow path is not less than 2.6 times and not more than 2.7 times the width of the front end of the discharge flow path.

3. The hair dryer according to claim 1, characterized in that: The rear end width of the discharge flow path has a width that is not less than 1.8 times and not more than 2 times the front end width of the discharge flow path.

4. The hair dryer according to claim 1, characterized in that: comprising a heater module located behind the air outlet of the main body, The air discharge portion includes a curved surface portion extending from the heater module toward the discharge flow path.

5. The hair dryer according to claim 4, characterized in that: The heater module includes: A cylindrical heater core; A plurality of support walls are radially arranged on the outer side of the heater core; a heating coil wound around the outer end of the support wall; and The air cutout portion is formed at a front edge corner of at least a portion of the plurality of support walls corresponding to the shape of the curved surface portion.

6. A hair dryer, characterized in that: include: A main body including a head magnet located at the front and an air discharge portion located at the periphery of the head magnet and discharging air; as well as An accessory air nozzle, combined with the air discharge portion; The accessory nozzle comprises: The nozzle frame comprises a fluid inlet, a fluid outlet and a nozzle flow path, wherein the fluid inlet is for air to flow in, the fluid outlet is for air to be discharged, and the nozzle flow path extends from the fluid inlet to the fluid outlet; An intermediate frame is located at the center of the fluid inlet of the nozzle frame and is connected to the nozzle frame by a frame bridge; A nozzle magnet, disposed on the middle frame and combined with the head magnet; and The ring-shaped silicone guide protrudes toward the back side at the periphery of the nozzle magnet.

7. The hair dryer according to claim 6, characterized in that: The air discharge portion is formed at a position corresponding to a ring-shaped gap between the intermediate frame and the outer ring frame.

8. The hair dryer according to claim 6, characterized in that: The main body includes a ring-shaped nozzle coupling groove corresponding to the silicone guide on the periphery of the head magnet.

9. The hair dryer according to claim 6, characterized in that: The silicone guide comprises: a mold part, disposed on the middle frame; and a silicone portion, double injection molded to the mold portion; The silicone portion surrounds the end portion of the mold portion in a U shape.

10. The hair dryer according to claim 6, characterized in that: include: A tuyere screw, passing through the tuyere magnet and the silicone guide to be fastened to the middle frame; as well as The magnet cover covers the head of the air nozzle screw and the air nozzle magnet.

11. The hair dryer according to claim 6, characterized in that: The fluid outlet of the nozzle frame has a rectangular shape that is long in one direction. The middle frame protrudes forward in a conical shape and includes frame wings expanding along the one direction.

12. The hair dryer according to claim 6, characterized in that: The front dimension of the nozzle flow path of the nozzle frame is smaller than or equal to the rear dimension. The hair dryer includes a nozzle housing inserted from the front to the rear of the nozzle frame to cover the outer side surface of the nozzle frame.

13. The hair dryer according to claim 6, characterized in that: The nozzle frame includes an outer ring frame, which is located at the periphery of the fluid inlet and combined with the periphery of the discharge hole of the main body. The outer ring frame comprises an elastic material and is fastened to the frame bridge of the intermediate frame.

14. The hair dryer according to claim 6, characterized in that: The accessory nozzle includes a central support rib located in the center of the width direction of the nozzle frame, The nozzle flow path comprises: a straight section extending forward from the fluid inlet; and An expansion section extends from the straight section to the fluid outlet, and the angle of the side walls of the expansion section on both sides of the width direction is greater than that of the straight section.

15. The hair dryer according to claim 6, characterized in that: The front end of the straight section is located on the same line as the central supporting rib in the width direction.

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