Hair dryer

Abstract

The utility model relates to the technical field of household appliances, and provides a hair drier which comprises a hair drier body, a handle and a button assembly, and the hair drier body is provided with an air outlet; the handle is connected to the hair dryer body, the handle is provided with an air inlet and comprises an inner handle and an outer handle, a first air duct communicated with the air outlet is arranged in the inner handle, the outer handle sleeves the inner handle, a second air duct is arranged between the inner handle and the outer handle, the second air duct is communicated with the first air duct, and the air inlet end of the first air duct is communicated with the air inlet; the button assembly is arranged in the second air duct. According to the hair dryer, when the hair dryer works, negative pressure generated at the air inlet can guide air possibly leaked from the button assembly to pass through the second air channel and be guided back to the first air channel again, in the process, due to the existence of the negative pressure at the air inlet, the air cannot leak from the button assembly, user experience can be effectively improved, and the user experience is improved. And the continuity and the stability of air flow can be ensured, and unnecessary air loss is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to a hair dryer. Background Art

[0002] Hair dryers are household appliances that people often use in their daily lives. Generally, people use hair dryers to dry their hair after washing it. Hair dryers are composed of a heating wire and a fan. The fan is driven directly by an electric motor to drive the rotor to rotate the blades. When the blades rotate, air is sucked in from the air inlet, and the centrifugal airflow formed is blown out from the air outlet. When air passes through the heating wire, if the heating wire is powered on, the hair dryer blows out hot air; if the heating wire is not working, the hair dryer blows out cold air. In this way, the hair dryer achieves the purpose of drying and shaping the hair. However, hair dryers inevitably have the possibility of air leakage at the button assembly, and this air leakage can easily greatly reduce the user experience. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the related art. To this end, the utility model provides a hair dryer, which is used to solve the defect of air leakage at the wiring part of the button assembly of the hair dryer in the prior art.

[0004] The hair dryer according to the embodiment of the utility model comprises:

[0005] The hair dryer body is provided with an air outlet;

[0006] A handle connected to the hair dryer body, the handle is provided with an air inlet, the handle comprises an inner handle and an outer handle, the inner handle is provided with a first air duct connected to the air outlet, the outer handle is sleeved on the inner handle, a second air duct is provided between the inner handle and the outer handle, the second air duct is connected to the first air duct, and an air inlet end of the first air duct is connected to the air inlet;

[0007] The button assembly is arranged in the second air duct.

[0008] According to the hair dryer of the embodiment of the utility model, the button assembly is arranged in the second air duct between the inner handle and the outer handle, which effectively solves the problem of wind leakage that may occur at the button assembly in the traditional hair dryer. When the hair dryer is working, the negative pressure generated at the air inlet will guide the wind that may leak from the button assembly through the second air duct and redirect it back to the first air duct. In this process, due to the existence of negative pressure at the air inlet, the wind will not leak from the button assembly and return to the first air duct, which can effectively improve the user experience, ensure the continuity and stability of the wind flow, and avoid unnecessary wind loss.

[0009] According to one embodiment of the utility model, an installation cavity and an air inlet cavity are formed inside the second air duct, the button assembly is arranged in the installation cavity, the air inlet cavity is located at one end of the installation cavity away from the hair dryer body, the air inlet cavity is connected to the air inlet end of the first air duct, the side wall of the air inlet cavity is provided with the air inlet, and a fan assembly is arranged in the first air duct to form a negative pressure area in the air inlet cavity.

[0010] According to one embodiment of the utility model, the inner handle includes an air inlet section and an installation section, the air inlet section is located in the air inlet cavity, the fan assembly is arranged in the installation section, the installation section corresponds to the installation cavity, and the cross-section of the air inlet section is smaller than the cross-section of the installation section.

[0011] According to one embodiment of the utility model, the inner handle is provided with a wire passing hole, the wire passing hole connects the air outlet end of the first air duct and the second air duct, and the wiring harness connecting the button assembly is connected to the electronic control assembly located on the hair dryer body through the wire passing hole.

[0012] According to an embodiment of the present utility model, the angle between the wire hole and the second air duct is between 30° and 60°.

[0013] According to an embodiment of the utility model, it also includes a guide member, and the guide member is arranged between the wire hole and the air outlet.

[0014] According to an embodiment of the present utility model, the guide member includes a guide surface which is recessed and faces away from the first air duct.

[0015] According to one embodiment of the utility model, the inner handle includes a first inner handle and a second inner handle, one of the first inner handle and the second inner handle is connected to the hair dryer body, the second inner handle is detachably connected to the first inner handle, and the first inner handle and the second inner handle form the first air duct.

[0016] According to an embodiment of the present invention, the ratio of the cross-sectional area of ​​the air inlet section of the first air duct to that of the second air duct is 8:1 to 5:1.

[0017] According to an embodiment of the present invention, a noise reduction component is further included, wherein the noise reduction component is connected to the inner wall of the first air duct and is used to reduce the noise of the first air duct.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic diagram of an exploded structure of a hair dryer provided in an embodiment of the present application is shown.

[0021] Figure 2 A schematic cross-sectional view of the hair dryer provided in the embodiment of the present application.

[0022] Reference numerals:

[0023] 100, hair dryer body; 101, air outlet; 110, electric control component; 120, flow guide; 121, flow guide surface;

[0024] 200, handle; 201, air inlet; 202, first air duct; 203, second air duct; 204, installation cavity; 205, air inlet cavity; 210, inner handle; 211, air inlet section; 212, installation section; 213, wire hole; 214, first inner handle; 215, second inner handle; 220, outer handle;

[0025] 300. Button component;

[0026] 400, motor assembly;

[0027] 500. Noise reduction component. DETAILED DESCRIPTION

[0028] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0029] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0030] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, wherein the fixed connection can include an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0031] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0032] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model embodiment. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0033] The hair dryer is mainly used for drying and shaping hair, and can also be used for local drying, heating and physical therapy in laboratories, physical therapy rooms, industrial production, art, etc. Although there are many types of hair dryers, their structures are similar, and they are all composed of a handle 200, a hair dryer body, a switch button, a power cord and other components.

[0034] In the related art, in order to reduce the air leakage problem at the button of the hair dryer, some sealing solutions are made at the button. However, due to the problem of the production process, there is inevitably a certain probability of air leakage at the button. Generally, the air leakage will come out from the gap between the buttons and be felt by the human body. To this end, the present application provides a hair dryer.

[0035] like Figure 1 The exploded schematic diagram of the structure of the hair dryer provided in the embodiment of the present application is shown; Figure 2A schematic cross-sectional view of the hair dryer provided in an embodiment of the present application.

[0036] According to the embodiment of the utility model, the hair dryer includes a hair dryer body 100, a handle 200 and a button assembly 300. The hair dryer body 100 is provided with an air outlet 101; the handle 200 is connected to the hair dryer body 100, and the handle 200 is provided with an air inlet 201. The handle 200 includes an inner handle 210 and an outer handle 220. The inner handle 210 is provided with a first air duct 202 connected to the air outlet 101, and the outer handle 220 is sleeved on the inner handle 210. A second air duct 203 is provided between the inner handle 210 and the outer handle 220. The second air duct 203 is connected to the first air duct 202, and the air inlet end of the first air duct 202 is connected to the air inlet 201; the button assembly 300 is arranged in the second air duct 203.

[0037] It is understandable that the wind leakage problem often leads to a reduction in the wind force of the hair dryer, and in some cases, the user may even feel that the wind is blown out from an unexpected position, which not only reduces the performance of the hair dryer, but also may affect the user's experience. In the hair dryer of the embodiment of the utility model, the button assembly 300 is arranged in the second air duct 203 between the inner handle 210 and the outer handle 220, which effectively solves the problem of wind leakage that may occur at the button assembly 300 in the traditional hair dryer. When the hair dryer is working, the negative pressure generated at the air inlet 201 will guide the wind that may leak from the button assembly 300 through the second air duct 203 and redirect it back to the first air duct 202. In this process, due to the existence of negative pressure at the air inlet 201, the wind will not leak from the button assembly 300, which can effectively improve the user experience, and can also ensure the continuity and stability of the wind flow, avoiding unnecessary wind loss.

[0038] It is understandable that, when the outer handle 220 is sleeved on the inner handle 210, the second air duct 203 can be arranged adjacent to the first air duct 202, and the first air duct 202 is not surrounded by the second air duct 203; it is understandable that by arranging the second air duct 203 adjacent to the first air duct 202, the space inside the hair dryer can be maximized, making the overall structure more compact. Of course, the second air duct 203 can also be arranged in a ring shape in the first air duct 202. It is understandable that the second air duct 203 arranged in a ring shape can better surround the first air duct 202 to form a more uniform and stable wind flow environment, and can make full use of the negative pressure effect generated at the air inlet 201 to effectively reduce the wind loss of the hair dryer.

[0039] It is understandable that the button assembly 300 can be an inductive button or a mechanically pressed button, and no specific limitation is given here. The button assembly 300 can include a power switch button, a wind speed adjustment button, a temperature adjustment button, a cold air / hot air switch button, and a styling mode button, etc. The above buttons can be provided separately or combined to form a multifunctional control panel.

[0040] It should be noted that the air inlet end of the first air duct 202 is connected to the air inlet 201 by the air inlet end of the first air duct 202 being connected to the air inlet 201 through the second air duct 203. Alternatively, the air inlet end of the first air duct 202 is directly connected to the air inlet 201.

[0041] According to one embodiment of the utility model, an installation cavity 204 and an air inlet cavity 205 are formed inside the second air duct 203, the button assembly 300 is arranged in the installation cavity 204, the air inlet cavity 205 is located at one end of the installation cavity 204 away from the hair dryer body 100, the air inlet cavity 205 is connected to the air inlet end of the first air duct 202, the side wall of the air inlet cavity 205 is provided with an air inlet port 201, and a fan assembly is arranged in the first air duct 202 to form a negative pressure area in the air inlet cavity 205.

[0042] It is understandable that the fan assembly disposed in the first air duct 202 will form a negative pressure area in the air inlet chamber 205 when in operation. This negative pressure effect helps to enhance the suction force of the air inlet 201, allowing air to enter the hair dryer more smoothly. The air inlet chamber 205 of the second air duct 203 is connected to the air inlet end of the first air duct 202, which helps the gas in the second air duct 203 to enter the air inlet chamber 205 from the installation chamber 204, and will not leave from the gap of the button assembly 300 of the installation chamber 204. The process of gas flowing in the second air duct 203 can be specifically referred to Figure 2 In the direction of the arrow.

[0043] It is understandable that the side wall of the air inlet cavity 205 is provided with an air inlet 201, which helps to increase the air inlet area and improve the air inlet efficiency, thereby ensuring that the hair dryer can obtain sufficient air flow when working.

[0044] According to one embodiment of the utility model, the inner handle 210 includes an air inlet section 211 and an installation section 212. The air inlet section 211 is located in the air inlet cavity 205. The fan assembly is arranged in the installation section 212. The installation section 212 corresponds to the installation cavity 204. The cross-section of the air inlet section 211 is smaller than the cross-section of the installation section 212.

[0045] It is understandable that the air inlet section 211 is located in the air inlet cavity 205, ensuring that air can smoothly enter from the air inlet 201 and flow to the fan assembly through the air inlet section 211. The mounting section 212 is used to accommodate the fan assembly. The cross-section of the mounting section 212 is larger than the cross-section of the air inlet section 211. The mounting section 212 has a larger internal space and can accommodate larger or more complex fan assemblies. In addition, the end surfaces of the mounting section 212 and the air inlet section 211 with varying cross-sections can form a limiting structure to facilitate the assembly and positioning of the fan assembly. The fan assembly is arranged in the mounting section 212 to ensure that the fan assembly is stably supported. The mounting section 212 corresponds to the mounting cavity 204, and the electrical connection between the button assembly 300 and the fan assembly is more convenient.

[0046] In one embodiment, the inner handle 210 includes a first inner handle 214 and a second inner handle 215. The air inlet section 211 is also divided into a first air inlet section 211 and a second air inlet section 211. The first air inlet section 211 and the second air inlet section 211 are provided with mutually matching mounting posts and mounting holes. The matching of the mounting posts and the mounting holes can not only connect the first air inlet section 211 and the second air inlet section 211, but also enhance the structural stability of the entire air inlet section 211.

[0047] In one embodiment, a flaring structure is disposed inside the air inlet section 211 , the flaring structure forms part of the first air duct 202 and is connected to the air inlet cavity 205 , and the flaring direction of the flaring structure is toward the hair dryer body 100 .

[0048] According to one embodiment of the utility model, the inner handle 210 is provided with a wire hole 213, which connects the air outlet end of the first air duct 202 and the second air duct 203, and the wiring harness (not shown in the figure) connecting the button assembly 300 is connected to the electronic control assembly 110 located on the hair dryer body 100 through the wire hole 213.

[0049] It is understandable that the wire hole 213 allows the button assembly 300 to be connected to the electronic control assembly 110. In the related art, a sealing solution is usually made at the wire hole 213, however, the sealing effect often fails to meet the requirements. The wire hole 213 of the present application connects the first air duct 202 and the second air duct 203, which can greatly reduce the accuracy requirements of the wire hole 213. Since there is a negative pressure in the air inlet area, the wind passing through the wire hole 213 will be pulled back to the air inlet area according to the Bernoulli principle. Therefore, the wire hole 213 of the present application does not need to consider the sealing problem, thereby reducing the production cost. At the same time, the wind will no longer leak from the button of the button assembly 300, and the human body cannot detect the air leakage, which provides a better user experience.

[0050] According to an embodiment of the present invention, the angle between the wire hole 213 and the second air duct 203 is between 30° and 60°. It can be understood that by setting the angle between the wire hole 213 and the second air duct 203 to be between 30° and 60°, the wire harness connecting the button assembly 300 can pass through the inner handle 210 at a more reasonable and smooth angle, reducing the stress and friction that the wire harness may be subjected to at the bend, thereby reducing the risk of damage to the wire harness.

[0051] Moreover, within the angle range of 30° to 60°, the connection between the wire hole 213 and the second air duct 203 is more stable, which helps to ensure the long-term reliable operation of the hair dryer. The airflow enters the second air duct 203 from the first air duct 202 through the wire hole 213 more smoothly, reducing noise.

[0052] According to an embodiment of the utility model, a guide member 120 is further included, and the guide member 120 is arranged between the wire hole 213 and the air outlet 101. It can be understood that the guide member 120 can effectively guide the direction of air flow, avoiding the turbulence and eddy flow of the air flow inside the hair dryer body 100. This helps to improve the overall wind effect of the hair dryer, making the wind force more concentrated and uniform.

[0053] The guide 120 is located between the wire hole 213 and the air outlet 101, which can prevent the wire harness from being directly impacted or disturbed by the airflow during the blowing process. This helps to protect the integrity of the wire harness, extend its service life, and reduce the risk of performance degradation or failure caused by wire harness problems.

[0054] According to an embodiment of the utility model, the guide member 120 includes a guide surface 121 that is recessed away from the first air duct 202. It is understandable that the guide surface 121 that is recessed away from the first air duct 202 can effectively guide the airflow to the air outlet 101, reducing the airflow entering the second air duct 203. The guide surface 121 can guide the airflow to pass more smoothly, reducing the resistance of the airflow during the flow process. Not only can the blowing efficiency of the hair dryer be improved, but also energy consumption can be reduced to a certain extent, making the product more energy-saving and efficient.

[0055] The guide surface 121 may be a curved surface, or a groove structure formed by multiple planes, which is not specifically limited here.

[0056] According to one embodiment of the utility model, the inner handle 210 includes a first inner handle 214 and a second inner handle 215, one of the first inner handle 214 and the second inner handle 215 is connected to the hair dryer body 100, and the second inner handle 215 is detachably connected to the first inner handle 214, and the first inner handle 214 and the second inner handle 215 enclose a first air duct 202.

[0057] It is understandable that by dividing the inner handle 210 into two detachable parts, namely the first inner handle 214 and the second inner handle 215, the assembly and disassembly process of the hair dryer becomes simpler and more convenient. The detachable connection between the first inner handle 214 and the second inner handle 215 also facilitates the precise adjustment and positioning of the air duct during the production and assembly process, ensuring the performance and quality of the product, and also facilitates the installation of the fan assembly disposed inside the inner handle 210.

[0058] According to an embodiment of the present invention, the ratio of the cross-sectional area of ​​the air inlet section of the first air duct 202 to that of the second air duct 203 is 8:1 to 5:1.

[0059] It is understandable that the ratio of the cross-sectional area of ​​the air inlet section of the first air duct 202 and the second air duct 203 is 8:1 to 5:1, which can ensure that the airflow is reasonably distributed between the first air duct 202 and the second air duct 203. The first air duct 202 with a larger cross-sectional area can allow more air to circulate and meet the air volume requirements of the hair dryer. The second air duct 203 with a smaller cross-sectional area can make the gas actively reflux based on the Bernoulli principle to reduce the occurrence of air leakage in the hair dryer. When the airflow at the air inlet end continuously enters the first air duct 202, the airflow entering the second air duct 203 will actively return to the air inlet end, and the smaller the cross-sectional area, the faster the gas reflux speed in the second air duct 203.

[0060] According to an embodiment of the present invention, a noise reduction component 500 is further included. The noise reduction component 500 is connected to the inner wall of the first air duct 202 to reduce the noise of the first air duct 202 .

[0061] It can be understood that by reducing the noise of the first air duct 202 through the noise reduction component 500, the noise generated by the hair dryer during use is greatly reduced, providing a quieter and more comfortable use environment for the user.

[0062] In one embodiment, the noise reduction component of the noise reduction assembly 500 is provided with a plurality of through holes which may be circular or polygonal in shape. When the airflow passes through the noise reduction component, it is divided into multiple beams by the noise reduction component and flows through the corresponding through holes, so as to reduce the cross-sectional area of ​​each airflow section, thereby reducing the noise when the hair dryer is working.

[0063] In one embodiment, the noise reduction assembly 500 includes a plurality of noise reduction components, and at least two noise reduction components are disposed at intervals.

[0064] Finally, it should be noted that the above implementation modes are only used to illustrate the present invention, rather than to limit the present invention. Although the present invention is described in detail with reference to the embodiments, a person skilled in the art should understand that various combinations, modifications or equivalent replacements of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention, and should be included in the scope of the claims of the present invention.

Claims

1. A hair dryer, characterized in that: include: The hair dryer body is provided with an air outlet; A handle connected to the hair dryer body, the handle is provided with an air inlet, the handle comprises an inner handle and an outer handle, the inner handle is provided with a first air duct connected to the air outlet, the outer handle is sleeved on the inner handle, a second air duct is provided between the inner handle and the outer handle, the second air duct is connected to the first air duct, and an air inlet end of the first air duct is connected to the air inlet; The button assembly is arranged in the second air duct.

2. The hair dryer according to claim 1, characterized in that: An installation cavity and an air inlet cavity are formed inside the second air duct, the button assembly is arranged in the installation cavity, the air inlet cavity is located at one end of the installation cavity away from the hair dryer body, the air inlet cavity is connected to the air inlet end of the first air duct, the side wall of the air inlet cavity is provided with the air inlet, and a fan assembly is arranged in the first air duct to form a negative pressure area in the air inlet cavity.

3. The hair dryer according to claim 2, characterized in that: The inner handle includes an air inlet section and an installation section, the air inlet section is located in the air inlet cavity, the fan assembly is arranged on the installation section, the installation section corresponds to the installation cavity, and the cross section of the air inlet section is smaller than the cross section of the installation section.

4. The hair dryer according to claim 1, characterized in that: The inner handle is provided with a wire passing hole, which connects the air outlet end of the first air duct and the second air duct, and the wiring harness connecting the button assembly is connected to the electric control assembly located on the hair dryer body through the wire passing hole.

5. The hair dryer according to claim 4, characterized in that: The angle between the wire hole and the second air duct is between 30° and 60°.

6. The hair dryer according to claim 4, characterized in that: It also includes a guide member, which is arranged between the wire hole and the air outlet.

7. The hair dryer according to claim 6, characterized in that: The air guide member includes an air guide surface which is recessed away from the first air duct.

8. The hair dryer according to any one of claims 1 to 7, characterized in that The inner handle includes a first inner handle and a second inner handle, one of the first inner handle and the second inner handle is connected to the hair dryer body, the second inner handle is detachably connected to the first inner handle, and the first air duct is formed between the first inner handle and the second inner handle.

9. The hair dryer according to any one of claims 3 to 7, characterized in that The ratio of the cross-sectional area of ​​the air inlet section of the first air duct to that of the second air duct is 8:1 to 5:

1.

10. The hair dryer according to any one of claims 1 to 7, characterized in that It also includes a noise reduction component, which is connected to the inner wall of the first air duct and is used to reduce the noise of the first air duct.

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