Handheld blower

Abstract

The utility model provides a handheld hair drier which comprises a machine shell assembly, a hair drier body assembly, a hair drier body assembly, a hair drier body assembly and a hair drier body assembly, and the machine shell assembly is internally provided with a first assembling groove and a second assembling groove, the holding handle is connected with the machine shell assembly and is held by an operator; the battery pack is assembled in the first assembling groove and located below the holding handle. The air blowing assembly comprises fan blades, a motor, a duct assembly and an air outlet pipe, the fan blades, the motor and the duct assembly are assembled in the second assembling groove, the air outlet pipe is connected with the machine shell assembly, the machine shell assembly is provided with an air inlet, the air outlet pipe is provided with an air outlet, and the air inlet, the second assembling groove and the air outlet are communicated with one another to form an airflow channel; in the air inlet direction of the air blowing assembly, the first assembling groove and the second assembling groove are partially overlapped up and down, and a distance exists between the lower wall face of the first assembling groove and the center line of the duct assembly. Compared with the prior art, the handheld blower has the advantages of being good in balance, compact in layout and capable of guaranteeing sufficient air inlet amount.

Description

Technical Field

[0001] The utility model relates to a handheld hair dryer, belonging to the technical field of gardening tools. Background Art

[0002] As is well known, the handheld hair dryers sold and used in the market generally use 220V AC power supply. Its structure mainly consists of four parts: a motor, a fan blade, a blowing and suction air duct, and an operation handle. The fan blade is driven by the motor to rotate to generate wind power, so as to achieve the purpose of air supply. The handheld hair dryer is mainly used indoors, mainly for cleaning dust, and is widely used in industries such as the repair industry and industrial and mining enterprises. It is simple to operate and convenient to use.

[0003] However, in order to ensure high-power output for the existing handheld hair dryers, the required battery pack capacity is relatively large. And the battery pack capacity is closely related to the weight of the battery pack, that is, the larger the battery pack capacity, the heavier the weight. Therefore, it will cause the center of gravity of the handheld hair dryer to be unbalanced.

[0004] In view of this, it is necessary to improve the existing handheld hair dryer to solve the above problems. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a handheld hair dryer, which places the battery pack below the holding handle and partially sinks into the area of the air flow channel, so that the handheld hair dryer has better balance, a compact layout, and can also ensure sufficient air intake.

[0006] To achieve the above purpose, the utility model provides a handheld hair dryer, including:

[0007] A housing assembly, which is internally provided with a first assembly groove and a second assembly groove located below the first assembly groove;

[0008] A holding handle, which is connected to the housing assembly for the operator to hold;

[0009] A battery pack, which is assembled in the first assembly groove and located below the holding handle; and

[0010] A blowing assembly, including a fan blade, a motor and a duct assembly assembled in the second assembly groove, and an air outlet pipe connected to the housing assembly. The housing assembly is provided with an air inlet, and the air outlet pipe is provided with an air outlet. The air inlet, the second assembly groove and the air outlet are interconnected to form an air flow channel;

[0011] Wherein, in the air inlet direction of the blowing assembly, the first assembly groove and the second assembly groove overlap up and down, and there is a distance between the lower wall surface of the first assembly groove and the center line of the duct assembly.

[0012] As a further improvement of the present utility model, the casing assembly is provided with a first air inlet communicating the outside with the first assembly groove and a first air outlet communicating the first assembly groove and the second assembly groove. The battery pack is provided with a second air inlet and a second air outlet. The second air inlet is disposed opposite to and communicated with the first air inlet, and the second air outlet is disposed opposite to and communicated with the first air outlet.

[0013] As a further improvement of the present utility model, the opening direction of the first assembly groove faces away from the air outlet, so that the battery pack is inserted into the first assembly groove along the air inlet direction.

[0014] As a further improvement of the present utility model, the first air inlet is opened on one side of the casing assembly facing the holding handle.

[0015] As a further improvement of the present utility model, the handheld hair dryer further includes a control board and a noise reduction sponge assembled in the second assembly groove. The control board is disposed close to the holding handle, and the noise reduction sponge is disposed at the air inlet and below the control board.

[0016] As a further improvement of the present utility model, a heat sink is disposed on one side of the control board facing the noise reduction sponge, and corresponding openings are provided on one side of the noise reduction sponge facing the control board. At least part of the heat sink is exposed to the openings.

[0017] As a further improvement of the present utility model, define one end of the noise reduction sponge close to the air inlet as the starting end, and one end of the duct assembly close to the air inlet as the air inlet end. In the air inlet direction, the distance between the starting end and the air inlet end is greater than 80 mm.

[0018] As a further improvement of the present utility model, the ratio of the maximum power of the handheld hair dryer to the weight of the battery pack is between 0.5 and 1.6, and the ratio of the maximum blowing force of the handheld hair dryer to the weight of the battery pack is between 5 and 18.

[0019] As a further improvement of the present utility model, a net cover is provided at the air inlet. In the vertical direction perpendicular to the air inlet direction, the ratio of the air inlet area of the net cover to the cross-sectional area of the duct assembly is greater than 1.4.

[0020] As a further improvement of the present utility model, the duct assembly includes a metal duct surrounding the outer periphery of the motor, and the fan blade is a metal fan blade.

[0021] The beneficial effects of the present utility model are as follows: By placing the battery pack below the holding handle, the handheld hair dryer of the present utility model has better balance; in addition, by arranging the first assembly groove and the second assembly groove to overlap in the upper and lower parts, and there is a distance between the lower wall surface of the first assembly groove and the center line of the duct assembly, the battery pack can partially sink into the area of the air flow channel, which not only has a compact layout but also can ensure sufficient air intake volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of a handheld hair dryer according to a preferred embodiment of the present utility model.

[0023] Figure 2 is Figure 1 an exploded view of the handheld hair dryer shown.

[0024] Figure 3 is Figure 1 a sectional view of the handheld hair dryer shown.

[0025] Figure 4 is Figure 1 a schematic structural diagram of the handheld hair dryer shown after removing the blowing assembly.

[0026] Figure 5 is Figure 4 a schematic structural diagram after removing the battery pack.

[0027] Figure 6 is Figure 4 an exploded view of...

[0028] Figure 7 is Figure 6 another view of the battery pack in...

[0029] Figure 8 is a diagram of the air flow direction at the battery pack.

[0030] Figure 9 is Figure 5 an exploded view after removing the mesh cover.

[0031] Figure 10 is Figure 9 a further exploded view of...

[0032] Figure 11 is a diagram of the air flow direction at the control board.

[0033] Figure 12 is a schematic structural diagram of another embodiment of the handheld hair dryer of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] To make the objectives, technical solutions, and advantages of the present utility model clearer, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] As Figure 1 shown, the present utility model discloses a handheld hair dryer 100 for handheld use. The handheld hair dryer 100 includes a housing assembly 1, a grip handle 2, a battery pack 3, and a blowing assembly 4. The grip handle 2 is connected to the housing assembly 1 for an operator to hold.

[0036] It should be noted that: the "upper and lower" in the present utility model are described in terms of the angle when the handheld hair dryer 100 is horizontally placed on the ground (such as Figure 1 ), when the position of the handheld hair dryer 100 changes, the "upper and lower" positional relationship will also change adaptively.

[0037] As Figure 2 and Figure 3 shown, the housing assembly 1 includes a first housing 11 and a second housing 12 assembled with each other. After the first housing 11 and the second housing 12 are assembled, a first assembly groove 13 and a second assembly groove 14 located below the first assembly groove 13 are formed by enclosing.

[0038] The blowing assembly 4 includes a wind blade 41, a motor 42, and a duct assembly 43 assembled in the second assembly groove 14, and an air outlet pipe 44 connected to the housing assembly 1. The housing assembly 1 is provided with an air inlet 10, and the air outlet pipe 44 is provided with an air outlet 440. The air inlet 10, the second assembly groove 14, and the air outlet 440 are interconnected to form an air flow channel.

[0039] In this embodiment, in the air inlet direction of the blowing assembly 4, the upper and lower parts of the first assembly groove 13 and the second assembly groove 14 overlap, and there is a distance B between the lower wall surface of the first assembly groove 13 and the center line of the duct assembly 43, and this distance B is greater than 0 mm.

[0040] The battery pack 3 is assembled in the first assembly groove 13 and located below the grip handle 2. In this way, on the one hand, the handheld hair dryer 100 can have better balance; on the other hand, the battery pack 3 can partially sink into the second assembly groove 14 (i.e., the area of the air inlet channel), which not only makes the internal layout of the handheld hair dryer 100 compact, but also can ensure sufficient air intake. In addition, when the handheld hair dryer 100 is working, the wind blade 41 can drive the external air to flow in the air flow channel and take away the heat in the battery pack 3.

[0041] Combined with Figure 4 and Figure 5As shown, specifically, the opening direction of the first assembly slot 13 is away from the air outlet 440, so that the battery pack 3 is inserted into the first assembly slot 13 along the air inlet direction. A plug seat 131 is provided on the side of the first assembly slot 13 away from the air inlet 10, and the plug seat 131 is used to electrically connect with the battery pack 3 after the battery pack 3 is inserted into the first assembly slot 13, and the battery pack 3 supplies power to the handheld hair dryer 100.

[0042] A release button 132 is provided on the side of the first assembly slot 13 close to the air inlet 10, and a pop-up structure 133 is provided on the side away from the air inlet 10. The release button 132 is provided at the top edge of the housing assembly 1, and is used to abut against the battery pack 3 when the battery pack 3 is assembled into the first assembly slot 13, so that the battery pack 3 cannot be separated from the first assembly slot 13; and is also used to separate from the battery pack 3 when the battery pack 3 needs to be taken out, so that the battery pack 3 is released. The pop-up structure 133 is accommodated in the first assembly slot 13, and is used to provide an elastic force for the battery pack 3 when the battery pack 3 is released, so as to help the battery pack 3 to be easily popped out of the first assembly slot 13.

[0043] In other words, when the battery pack 3 is assembled in the first assembly slot 13, the battery pack 3 is electrically connected to the insert seat 131, the release button 132 is in contact with the battery pack 3, and the pop-up structure 133 is compressed; when the battery pack 3 needs to be taken out, the release button 132 is operated to separate the release button 132 from the battery pack 3. At this time, the battery pack 3 pops out of the first assembly slot 13 under the action of the restoring force of the pop-up structure 133, making it convenient for the operator to take out the battery pack 3.

[0044] like Figures 6 to 8 As shown, the housing assembly 1 is also provided with a first air inlet 15 connecting the outside with the first assembly slot 13 and a first air outlet 16 connecting the first assembly slot 13 and the second assembly slot 14. The battery pack 3 is provided with a second air inlet 31 and a second air outlet 32, wherein the second air inlet 31 is arranged opposite to the first air inlet 15 and connected to each other, and the second air outlet 32 is arranged opposite to the first air outlet 16 and connected to each other. With such arrangement, when the motor 42 is started, a negative pressure can be formed inside the handheld hair dryer 100, thereby forcing the airflow from the outside to enter the first assembly slot 13 from the first air inlet 15, and then enter the battery pack 3 from the second air inlet 31, driving the heat in the battery pack 3 to flow out from the second air outlet 32, and then flow into the second assembly slot 14 from the first air outlet 16, and flow out along with the airflow in the airflow channel, thereby achieving the effect of dissipating heat for the battery pack 3.

[0045] In this embodiment, the first air inlet 15 is provided on the side of the housing assembly 1 facing the gripping handle 2, so as to form forced convection and natural convection at the first air inlet 15, thereby enhancing the heat dissipation of the battery pack 3 and achieving a better heat dissipation effect. Of course, in other embodiments, the first air inlet 15 may also be provided on the side wall of the housing assembly 1, which is not limited here.

[0046] like Figures 9 to 11 Combined with Figure 2 and Figure 3 As shown, the handheld hair dryer 100 further includes a control panel 17 and a noise reduction sponge 18 mounted in the second mounting groove 14. The control panel 17 is arranged near the gripping handle 2 and is used to control the working state of the handheld hair dryer 100. The noise reduction sponge 18 is arranged at the air inlet 10 and below the control panel 17, so that the noise can be reduced and the noise reduction sponge 18 can be used to dissipate heat for the control panel 17.

[0047] Specifically, a heat sink 171 is provided on the side of the control board 17 facing the noise reduction sponge 18, and an opening 181 is correspondingly provided on the side of the noise reduction sponge 18 facing the control board 17. The heat sink 171 is at least partially exposed to the opening 181, so that when the external airflow enters the airflow channel from the air inlet 10, it will pass through the opening 181, take away the heat on the heat sink 171, and play a role in heat dissipation and cooling the control board 17. Optionally, the noise reduction sponge 18 is fitted on the inner peripheral wall of the second assembly groove 14, and is divided into a first part 182 close to the gripping handle 2 and a second part 183 away from the gripping handle 2, and the opening 181 is opened on the first part 182.

[0048] The end of the noise reduction sponge 18 close to the air inlet 10 is defined as the starting end, and the end of the duct component 43 close to the air inlet 10 is defined as the wind inlet end. In the wind inlet direction, there is a distance A between the starting end and the wind inlet end, and the distance A is greater than 80 mm.

[0049] The duct assembly 43 includes a duct 431 disposed around the outer periphery of the motor 42. In this embodiment, the duct 431 is a metal duct, and the fan blade 41 is a metal fan blade, so that the metal fan blade can withstand a higher rotation speed, so that the handheld hair dryer 100 of the utility model can have a higher power, thereby achieving a higher wind speed and air volume.

[0050] like Figure 5 and Figure 6 As shown, because a higher air volume is required at a high speed, the handheld hair dryer 100 of the utility model is provided with a mesh cover 19 at the air inlet 10, and the air inlet area of the mesh cover 19 needs to be greater than 9000mm2 Meanwhile, in the vertical direction perpendicular to the air inlet direction, the air inlet area of the mesh cover 19 (unit: mm 2 ) and the cross-sectional area of the duct assembly 43 (unit: mm 2 ) need to have a ratio greater than 1.4.

[0051] The greater the overall power of the handheld hair dryer 100, the greater the blowing force. Therefore, the ratio of the maximum blowing force (unit: N) of the handheld hair dryer 100 to the weight of the battery pack 3 (unit: Kg) is between 5 and 18. Due to the relatively large overall power, to ensure a reasonable battery life for the whole machine, a heavier battery pack 3 needs to be adapted. Therefore, the ratio of the maximum power (unit: KW) of the handheld hair dryer 100 to the weight of the battery pack 3 (unit: Kg) needs to be between 0.5 and 1.6.

[0052] As Figure 1 and Figure 12 shown, optionally, the air outlet pipe 44 can be a blowing pipe, or a blowing nozzle (such as Figure 12 ), or a combination of a blowing pipe and a blowing nozzle (such as Figure 1 ). That is to say, the housing assembly 1 of the present utility model can be directly assembled with the blowing pipe or directly assembled with the blowing nozzle. When the housing assembly 1 is directly assembled with the blowing pipe, a blowing nozzle can also be assembled at the end of the blowing pipe to adapt to different working environments.

[0053] As Figure 9 and Figure 10 and combined with Figure 2 shown, a control panel 20 is provided on the holding handle 2. The control panel 20 is integrated with a switch trigger 21, a constant speed button 22, and an acceleration button 23. After pressing the switch trigger 21, not only can the handheld hair dryer 100 be started, but also the rotation speeds of the motor 42 and the fan blade 41 can be adjusted, so that the handheld hair dryer 100 enters different working states. After pressing the constant speed button 22, the handheld hair dryer 100 can operate at a constant rotation speed. After pressing the acceleration button 23, the handheld hair dryer 100 can operate at the highest rotation speed state. The specific structures of the switch trigger 21, the constant speed button 22, and the acceleration button 23 can adopt existing technical solutions and will not be described in detail and limited here.

[0054] In summary, for the hand-held hair dryer 100 of the present utility model, by placing the battery pack 3 below the holding handle 2, the hand-held hair dryer 100 has better balance. In addition, by arranging the first assembly groove 13 and the second assembly groove 14 to overlap in the upper and lower parts, and there is a distance between the lower wall surface of the first assembly groove 13 and the center line of the duct assembly 43, the battery pack 3 can partially sink into the air flow channel, especially the area of the air inlet channel, which not only has a compact layout, but also can ensure sufficient air intake volume.

[0055] The above embodiments are only used to illustrate the technical solutions of the present utility model and not to limit them. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present utility model can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present utility model.

Claims

1. A handheld hair dryer, characterized in that, Comprising: A housing assembly having a first assembly groove and a second assembly groove located below the first assembly groove inside; A holding handle connected to the housing assembly for an operator to hold; A battery pack assembled in the first assembly groove and located below the holding handle; And A blowing assembly including a blower blade, a motor and a duct assembly assembled in the second assembly groove, and an air outlet pipe connected to the housing assembly. The housing assembly is provided with an air inlet, and the air outlet pipe is provided with an air outlet. The air inlet, the second assembly groove and the air outlet are interconnected to form an air flow channel; Wherein, in the air inlet direction of the blowing assembly, the first assembly groove and the second assembly groove overlap vertically in part, and there is a distance between the lower wall surface of the first assembly groove and the center line of the duct assembly.

2. The hand-held hair dryer according to claim 1, characterized in that: The housing assembly is provided with a first air inlet communicating the outside with the first assembly groove and a first air outlet communicating the first assembly groove and the second assembly groove. The battery pack is provided with a second air inlet and a second air outlet. The second air inlet and the first air inlet are oppositely arranged and interconnected. The second air outlet and the first air outlet are oppositely arranged and interconnected.

3. The hand-held hair dryer according to claim 2, characterized in that: The opening direction of the first assembly groove faces away from the air outlet, so that the battery pack is inserted into the first assembly groove along the air inlet direction.

4. The handheld hair dryer according to claim 3, characterized in that: The first air inlet is opened on one side of the housing assembly facing the holding handle.

5. The hand-held hair dryer according to claim 1, wherein: The handheld hair dryer further includes a control board and a noise reduction sponge assembled in the second assembly groove. The control board is arranged close to the holding handle, and the noise reduction sponge is arranged at the air inlet and located below the control board.

6. The hand-held hair dryer according to claim 5, characterized in that: A heat sink is arranged on one side of the control board facing the noise reduction sponge, and an opening is correspondingly arranged on one side of the noise reduction sponge facing the control board. At least part of the heat sink is exposed to the opening.

7. The hand-held hair dryer according to claim 5, wherein: Defining one end of the noise reduction sponge close to the air inlet as the starting end, and one end of the duct assembly close to the air inlet as the air inlet end. In the air inlet direction, the distance between the starting end and the air inlet end is greater than 80 mm.

8. The handheld hair dryer according to claim 1, characterized in that: The ratio of the maximum power of the handheld hair dryer to the weight of the battery pack is between 0.5 and 1.6, and the ratio of the maximum blowing force of the handheld hair dryer to the weight of the battery pack is between 5 and 18.

9. The hand-held hair dryer according to claim 1, characterized in that: A mesh cover is arranged at the air inlet. In the vertical direction perpendicular to the air inlet direction, the ratio of the air inlet area of the mesh cover to the cross-sectional area of the duct assembly is greater than 1.

4.

10. The handheld hair dryer according to claim 1, wherein: The duct assembly includes a metal duct surrounding the outer periphery of the motor, and the blower blade is a metal blower blade.

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