Low-wind-resistance roller handheld appliance

Abstract

The utility model discloses a low wind resistance roller hand-held appliance which comprises a hand-held part, a fan and a roller, the hand-held part is provided with an air duct, an air inlet and an air outlet, the air inlet and the air outlet are communicated with the air duct, the hand-held part is provided with a first sinking groove with a top opening, the first sinking groove sinks into the air duct, and the bottom of the first sinking groove comprises a flow guide structure used for reducing wind resistance; the fan is installed in the air duct, and the central axis of the fan is located below the central axis of the handheld part; the rolling wheel is rotatably mounted in the first sinking groove, and the rolling wheel is located between the air outlet and the fan; the central axis of the fan deviates downwards relative to the central axis of the handheld part so as to change the blowing direction of the whole air duct, so that one part of the air duct can avoid the shielding of the first sinking groove, and in cooperation with the air flow guide of the flow guide structure, the blockage of the air duct is reduced, the smoothness of the air duct is improved, and the air speed and the air pressure are improved.

Description

Technical Field

[0001] The utility model relates to the field of hair dryers, in particular to a low wind resistance roller handheld device. Background Art

[0002] The existing hair dryer is provided with a roller on its handheld part, and the wind speed and air outlet temperature of the hair dryer are adjusted by rolling the roller.

[0003] In order to make the roller adjustment more comfortable, existing hair dryers have most of the roller embedded in the handheld portion, which causes the portion of the roller extending into the handheld portion to block the air duct inside the handheld portion, resulting in obstruction of the air duct and reduced wind speed and pressure. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a low wind resistance roller handheld device.

[0005] According to the first aspect of the utility model, a low wind resistance roller handheld device includes a handheld part, a fan and a roller, the handheld part has an air duct and an air inlet and an air outlet connected to the air duct, the handheld part has a first sink groove with a top opening, the first sink groove is sunken into the air duct, and the bottom of the first sink groove includes a guide structure for reducing wind resistance; the fan is installed in the air duct, and the central axis of the fan is located below the central axis of the handheld part; the roller is rotatably installed in the first sink groove, and the roller is located between the air outlet and the fan.

[0006] The low wind resistance roller handheld device according to the embodiment of the utility model has at least the following technical effects: the central axis of the fan is offset downward relative to the central axis of the handheld portion to change the blowing direction of the entire air duct, so that a part of the air duct can avoid the obstruction of the first sink groove, and cooperate with the gas diversion of the guide structure to reduce the obstruction of the air duct, improve the fluency of the air duct, and increase the wind speed and wind pressure.

[0007] According to some embodiments of the utility model, the air duct also includes an air outlet section, wherein the air outlet section is located between the air outlet end of the fan and the air outlet, and the flow cross-sectional area at any point of the air outlet section is greater than or equal to the flow cross-sectional area of ​​the air duct corresponding to the fan.

[0008] According to some embodiments of the utility model, the guide structure includes a first guide segment and a second guide segment connected in sequence along the air outlet direction of the air duct, and the distance between the first guide segment and the central axis of the handheld part gradually decreases along the air outlet direction of the air duct.

[0009] According to some embodiments of the utility model, the second guide section is straight, and is provided with a first wind-breaking protrusion protruding away from the roller, and the first wind-breaking protrusion (153) is conical at one end close to the fan.

[0010] According to some embodiments of the present invention, it further includes a control switch installed on the handheld part, and the control switch is located between the fan and the air outlet.

[0011] According to some embodiments of the utility model, a second groove is provided on the hand-held part, the second groove is sunk into the air duct, the second groove is used to install the control switch, the bottom of the second groove includes a third guide section and a fourth guide section connected in sequence along the air outlet direction of the air duct, and the distance between the third guide section and the central axis of the hand-held part gradually decreases along the air outlet direction of the air duct.

[0012] According to some embodiments of the utility model, the fourth guide section is straight, and is provided with a second wind-breaking protrusion protruding away from the control switch, and the second wind-breaking protrusion is conical at one end close to the fan.

[0013] According to some embodiments of the utility model, it also includes an arc-shaped installation cover and a cover body, the control switch has a control part, the installation cover has a installation hole, the installation hole is sleeved outside the control part, the cover body is installed on the control part, the edge of the installation hole is located inside the edge of the cover body, and the top of the installation cover has a water guiding structure for guiding water on the cover body to both sides of the installation cover.

[0014] According to some embodiments of the present invention, the water guiding structure includes a plurality of water guiding protrusions arranged at intervals, and the plurality of water guiding protrusions are respectively located outside the cover body.

[0015] According to some embodiments of the present invention, most of the roller is embedded in the handheld part.

[0016] 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

[0017] Additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 A cross-sectional view of a low wind resistance roller handheld device according to an embodiment of the utility model;

[0019] Figure 2It is a schematic diagram of the structure of the upper cover of the handheld part;

[0020] Figure 3 It is a schematic diagram of the structure of the lower cover of the handheld part;

[0021] Figure 4 A schematic diagram of the structure of the handheld part after the cover plate for fixing the roller is taken out of the handheld part;

[0022] Figure 5 It is a schematic diagram of the structure after the cover body, the mounting cover and the control switch are separated;

[0023] Figure 6 It is a structural schematic diagram of the cover body being installed on the mounting cover and the control switch.

[0024] Figure numerals: hand-held part 100, air duct 110, air outlet section 111, air outlet end 1111, air inlet 120, air outlet 130, first trough 140, guide structure 150, first guide section 151, second guide section 152, first wind-breaking protrusion 153, second trough 160, third guide section 161, fourth guide section 162, second wind-breaking protrusion 163, fan 200, roller 300, control switch 400, control part 410, installation cover 500, installation hole 510, water guide structure 520, water guide protrusion 521, cover body 600. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0026] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 a limitation on the present invention.

[0027] In the description of the present utility model, the meaning of "more than" is more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0028] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0029] Reference Figure 1 As shown, the low wind resistance roller handheld device according to an embodiment of the utility model includes a handheld part 100, a fan 200 and a roller 300. The handheld part 100 has an air duct 110 and an air inlet 120 and an air outlet 130 connected to the air duct 110. The handheld part 100 has a first sinking groove 140 with a top opening. The first sinking groove 140 is sunken into the air duct 110, and the bottom of the first sinking groove 140 includes a guide structure 150 for reducing wind resistance; the fan 200 is installed in the air duct 110, and the central axis α of the fan 200 is located below the central axis β of the handheld part 100; the roller 300 is rotatably installed in the first sinking groove 140, and the roller 300 is located between the air outlet 130 and the fan 200.

[0030] The central axis α of the fan 200 is offset downward relative to the central axis β of the hand-held part 100. Relative to the existing air duct 110, the entire air duct 110 of the utility model is displaced downward by a certain distance, thereby changing the blowing direction of the entire air duct 110, so that a part of the air duct 110 can avoid the obstruction of the first trough 140, and cooperate with the gas diversion of the guide structure 150 to make the gas flow more smoothly through the bottom of the first trough 140, so as to reduce the obstruction of the air duct 110, improve the fluency of the air duct 110, and increase the wind speed and wind pressure.

[0031] Specifically, Figure 1 As shown, the handheld part 100 is placed horizontally, the left end of the handheld part 100 is the air inlet 120, the right end of the handheld part 100 is the air outlet 130, and the central axis α of the fan 200 is located directly below the central axis β of the handheld part 100; when working, under the action of the fan 200, wind enters the air inlet 120, enters the air duct 110, and then exits from the air outlet 130; the handheld part 100 can be connected to the wind cylinder part of the hair dryer; the fan 200 can be a brushless motor; the roller 300 is connected to an encoder, and the control voltage of the decoder is a safe DC voltage of 5V, to ensure that there is no risk of leakage when the user adjusts the roller 300.

[0032] In some embodiments of the present invention, Figure 1As shown, the air duct 110 includes an air outlet section 111, which is located between the air outlet end 1111 of the fan 200 and the air outlet 130. The flow cross-sectional area at any point of the air outlet section 111 is greater than or equal to the flow cross-sectional area of ​​the air duct 110 corresponding to the fan 200 (the flow cross-sectional area of ​​the air duct 110 corresponding to any point from the air inlet end to the air outlet end 111 of the fan 200). The flow cross-sectional area setting of the air duct 110 is combined with the offset setting of the air duct 110 to ensure that the air duct 110 in the handheld device is free of bottlenecks and resistances.

[0033] In some embodiments of the present invention, Figure 1 As shown, the guide structure 150 includes a first guide section 151 and a second guide section 152 which are sequentially connected along the air outlet direction of the air duct 110. The first guide section 151 is used to guide the airflow to the second guide section 152. By providing the first guide section 151, the gas from the fan 200 can be more easily guided to the second guide section 152 under the action of the first guide section 151, thereby ensuring that the air duct 110 in the handheld device has no bottleneck and resistance; specifically, the distance between the first guide section 151 and the central axis of the handheld part 100 decreases along the air outlet direction of the air duct 110, and the distance between the second guide section 152 and the central axis of the handheld part 100 is smaller than the distance between the right end of the first guide section 151 and the central axis of the handheld part 100. Furthermore, the middle part of the first guide section 151 is connected with a first straight section.

[0034] In a further embodiment of the present invention, Figure 1 As shown, the second guide section 152 is straight and is provided with a first wind-breaking protrusion 153. The first wind-breaking protrusion 153 and the second guide section 152 cooperate with the first guide section 151 to reduce wind resistance and improve the smoothness of the air duct 110. Specifically, the first wind-breaking protrusion 153 is conical on one side close to the first guide section 151 to facilitate wind breaking.

[0035] In some embodiments of the present invention, Figure 1 As shown, it also includes a control switch 400 installed on the handheld part 100, and the control switch 400 is located between the fan 200 and the air outlet 130, that is, the control switch 400 is installed at one end of the handheld part 100 close to the air outlet 130, which is convenient for users to adjust; the control switch 400 is a switch for controlling the power switch of the hair dryer, the one-button cold air switch of the hair dryer, or other functions of the hair dryer.

[0036] In a further embodiment of the present invention, Figure 1As shown, a second groove 160 is provided on the handheld part 100, and the second groove 160 is sunk into the air duct 110. The second groove 160 is used to install the control switch 400. The bottom of the second groove 160 includes a third guide section 161 and a fourth guide section 162 connected in sequence along the air outlet direction of the air duct 110. The third guide section 161 is used to guide the airflow to the fourth guide section 162. So that the gas from the fan 200 can be more easily guided to the fourth guide section 162 under the action of the third guide section 161, ensuring that the air duct 110 in the handheld device is free of bottlenecks and resistance; specifically, the distance between the third guide section 161 and the central axis of the handheld part 100 decreases along the air outlet direction of the air duct 110, and the distance between the fourth flow section 162 and the central axis of the handheld part 100 is smaller than the distance between the right end of the third guide section 161 and the central axis of the handheld part 100. Furthermore, the middle part of the third guide section 161 is connected to the second straight section.

[0037] In a further embodiment of the present invention, Figure 3 As shown, the fourth guide section 162 is straight, and the fourth guide section 162 is provided with a second wind-breaking protrusion 163. The second wind-breaking protrusion 163 and the fourth guide section 162 cooperate with the third guide section 161 to reduce wind resistance and improve the smoothness of the air duct 110; specifically, the second wind-breaking protrusion 163 is conical on one side close to the third guide section 161 to facilitate wind breaking.

[0038] In a further embodiment of the present invention, Figure 4 , 5 6, it also includes an arc-shaped installation cover 500 and a cover body 600. The control switch 400 has a control part 410, and the installation cover 500 has a mounting hole 510. The mounting hole 510 is sleeved outside the control part 410. The cover body 600 is installed on the control part 410. The edge of the mounting hole 510 is located inside the edge of the cover body 600. The top of the installation cover 500 has a water guide structure 520 for guiding water on the cover body 600 to both sides of the installation cover 500. By providing the water guide structure 520, if water drops flow from the cover body 600 to the installation cover 500, the water will flow to both sides of the installation cover 500 under the action of the water guide structure 520, and will not enter from the mounting hole 510, thereby preventing water from entering the AC high voltage area (at the control part 410), thereby greatly reducing the risk of leakage and improving safety protection without increasing additional costs.

[0039] In some embodiments of the present invention, Figure 5 , 6As shown, the water guiding structure 520 includes a plurality of water guiding protrusions 521 spaced apart along the axial direction of the hand-held portion 100. The plurality of water guiding protrusions 521 are respectively located outside the cover body 600. A hydrophobic guide groove is formed between two water guiding protrusions 521. If water droplets enter and flow from the cover body 600 to the mounting cover 500, the hydrophobic guide groove will guide the water into both sides of the cover body 600 to prevent water from entering the AC high-voltage area.

[0040] In some embodiments of the present invention, Figure 1 As shown, most of the roller 300 is embedded in the handheld part 100 to achieve the comfort of speed regulation of the handheld device, and in conjunction with the offset of the fan 200 and the setting of the guide structure 150, it is achieved that the speed regulation can be guaranteed to be comfortable without causing obstruction of the air duct 110 and reducing the wind speed and wind pressure.

[0041] In the description of this specification, the description with reference to the terms "some embodiments" or "it is conceivable that" 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. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0042] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A low wind resistance roller handheld device, characterized in that: include: A handheld part, having an air duct and an air inlet and an air outlet connected to the air duct, the handheld part having a first sinking groove with a top opening, the first sinking groove sinking into the air duct, and the bottom of the first sinking groove comprising a guide structure for reducing wind resistance; A fan is installed in the air duct, and the central axis of the fan is located below the central axis of the handheld part; A roller is rotatably installed in the first sink, and the roller is located between the air outlet and the fan.

2. The low wind resistance roller handheld device according to claim 1, characterized in that: The air duct includes an air outlet section, and the air outlet section is located between the air outlet end of the fan and the air outlet. The flow cross-sectional area at any point of the air outlet section is greater than or equal to the flow cross-sectional area of ​​the air duct corresponding to the fan.

3. The low wind resistance roller handheld device according to claim 1, characterized in that: The guide structure comprises a first guide section and a second guide section which are sequentially connected along the air outlet direction of the air duct, and the distance between the first guide section and the central axis of the handheld part gradually decreases along the air outlet direction of the air duct.

4. The low wind resistance roller handheld device according to claim 3, characterized in that: The second flow guide section is straight, and is provided with a first wind-breaking protrusion that protrudes away from the roller. The first wind-breaking protrusion is conical at one end close to the fan.

5. The low wind resistance roller handheld device according to claim 1, characterized in that: It also includes a control switch installed on the handheld part, and the control switch is located between the fan and the air outlet.

6. The low wind resistance roller handheld device according to claim 5, characterized in that: The hand-held part is provided with a second groove, which is sunk into the air duct. The second groove is used to install the control switch. The bottom of the second groove includes a third guide section and a fourth guide section connected in sequence along the air outlet direction of the air duct. The distance between the third guide section and the central axis of the hand-held part gradually decreases along the air outlet direction of the air duct.

7. The low wind resistance roller handheld device according to claim 6, characterized in that: The fourth flow guide section is straight, and is provided with a second wind-breaking protrusion that protrudes away from the control switch. The second wind-breaking protrusion is conical at one end close to the fan.

8. The low wind resistance roller handheld device according to claim 5, characterized in that: It also includes an arc-shaped installation cover and a cover body, the control switch has a control part, the installation cover has a installation hole, the installation hole is sleeved outside the control part, the cover body is installed on the control part, the edge of the installation hole is located inside the edge of the cover body, and the top of the installation cover has a water guide structure for guiding water on the cover body to both sides of the installation cover.

9. The low wind resistance roller handheld device according to claim 8, characterized in that: The water guiding structure comprises a plurality of water guiding protrusions arranged at intervals, and the plurality of water guiding protrusions are respectively located outside the cover body.

10. The low wind resistance roller handheld device according to claim 1, characterized in that: A majority of the roller is embedded in the handheld portion.

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