CN114960510A - Hair drier - Google Patents

Abstract

The invention provides a hair dryer, comprising: a blower, a motor; a fan driven by the motor to rotate around the central axis; a power supply device for supplying power to the motor; at least a handle forming a gripping portion for gripping; the air pipe assembly forms an air inlet for air inlet and an air outlet for air outlet; the vertical distance between the highest point of the holding part and the central axis is less than or equal to 100 mm. The distance between the holding part of the blower and the recoil force generated when the blower runs is reduced by adjusting the position of the handle of the air outlet machine, so that the moment of the recoil force generated when the blower runs is reduced at the holding part, and the burden of a user when the blower is used is reduced.

Description

Hair drier

Technical Field

The invention relates to an electric tool, in particular to a hair drier.

Background

A blower is a commonly used garden-like tool that helps a user to clean fallen leaves in the garden with a stream of air. When the air is sprayed out of the hair drier, the sprayed object can generate a reverse recoil force according to momentum conservation, so that a user holds the hair drier and needs to suppress the recoil force generated by the hair drier to prevent the hair drier from deflecting, the use fatigue of the user is increased, and the hair drier is not favorable for lasting operation.

Disclosure of Invention

In order to solve the defects of the prior art, the invention aims to provide a hair drier which is convenient for a user to operate and reduces the load when the user holds and uses the hair drier.

In order to achieve the above main object, the present invention provides a hair dryer including: a motor; a fan driven by the motor to rotate around the central axis; a power supply device for supplying power to the motor; at least one handle forming a gripping portion for gripping; the air pipe assembly forms an air inlet for air inlet and an air outlet for air outlet; the vertical distance between the highest point of the holding part and the central axis is less than or equal to 100 mm.

Optionally, the handle comprises a switch and a slot for mounting the switch, and the perpendicular distance between the tail end of the slot and the central axis is less than or equal to 80 mm.

Optionally, the switch is disposed above the central axis, and a perpendicular distance between a highest point of the grip portion and the central axis is less than or equal to 70 mm.

Optionally, the switch is disposed below the central axis, and a perpendicular distance between the slotted end and the central axis is less than or equal to 30 mm.

Optionally, the air duct assembly includes a second air duct and a first air duct, a portion of the second air duct is disposed inside the first air duct, the air outlet is disposed at the end of the first air duct, and the first air duct extends along the axis of the air duct.

Optionally, a ratio of a length of the first air duct in the axial direction of the central axis to a length of the blower in the axial direction of the central axis is greater than or equal to 40% and less than or equal to 60%.

Optionally, a perpendicular distance between a highest point of the holding portion and the central axis is less than or equal to 70 mm.

Optionally, the vertical distance between the highest point of the whole blower and the central axis is less than or equal to 120 mm.

Optionally, a ratio of an overlapping area of a projection of the handle in a radial direction of the central axis and a projection of the air duct assembly in the direction to a projection area of the handle in the direction is greater than or equal to 70% and less than or equal to 100%.

Optionally, the blower further comprises a fan housing, the fan housing comprising annularly distributed ribs extending in a circumferential direction of the central axis.

Optionally, the hair dryer further comprises: the support is arranged below the blower;

the highest point of the handle is lower than that of the fan cover.

Optionally, the central axis passes through the handle.

In order to achieve the above main object, the present invention provides a hair dryer including: a motor; a fan driven by the motor to rotate around the central axis; a power supply device for supplying power to the motor; at least a handle forming a gripping portion for gripping; the air pipe assembly forms an air inlet for air inlet and an air outlet for air outlet; the perpendicular distance between the highest point of the holding part and the central axis is less than or equal to 140mm, and at least one part between the highest point of the holding part and the battery pack interface is penetrated by the central axis.

Has the advantages that: the invention enables the distance between the holding part of the user for the hair drier and the recoil force generated when the hair drier runs to be reduced by adjusting the position of the handle of the air outlet machine, so as to reduce the moment generated by the recoil force generated when the hair drier runs at the holding part, and reduce the burden of the user when the hair drier is used.

Drawings

FIG. 1 is a schematic perspective view of a hair dryer according to a first embodiment of the present invention;

figure 2 is a schematic perspective view of another angle of the blower of figure 1;

figure 3 is a schematic cross-sectional view of the blower of figure 1;

figure 4 is a schematic plan view of a hair dryer in accordance with a first embodiment of the present invention;

figure 5 is a schematic plan view of the blower of figure 1;

figure 6 is a schematic plan view of a second embodiment of a hair dryer according to the present invention;

figure 7 is a schematic plan view of a blower according to a third embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation that the first and second features are not in direct contact, but are in contact via another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The invention is described in detail below with reference to the figures and the embodiments.

In one embodiment of the present invention, referring to fig. 1-3, a blower 100 includes a motor 110, a fan 120, a power supply device, a duct assembly 130, and a handle 140. The duct assembly 130 forms an intake opening 133 for intake air and an outlet opening 134 for outlet air. The fan 120 is driven by the motor 110 to rotate around the central axis 101, and the power supply device is used for supplying power to the motor 110, and can be a battery pack or an alternating current power supply. The handle 140 is formed with a holding portion 142 for a user to hold, and the switch 150 for controlling the motor 110 is disposed on the handle 140, so that the user can hold the handle 140 and press the switch 150 to control the operation of the motor 110 when holding the handle 140. Handle 140 has a slot 141 for receiving a switch 150. switch 150 is typically a trigger that a user presses to turn on the motor, and switch 150 may also be other operating members such as a button. The slot 141 is generally disposed at the middle upper portion of the handle 140, and the user can touch and push the switch 150 while holding the handle 140. The fan 120 rotates to guide the airflow from the air inlet 133 into the interior of the air duct assembly 130 and out of the air outlet 134, and the airflow is used to assist in cleaning fallen leaves or other debris. Alternatively, the switch may be provided at other locations of the hair dryer than at the handle.

Referring to fig. 2 and 3, the air duct assembly 130 includes a first air duct 131 and a second air duct 132, a portion of the second air duct 132 is disposed in the first air duct 131, and an air outlet 134 is disposed at one end of the first air duct 131. The blower 100 further includes a connecting portion 160 and a hood 170, the connecting portion 160 connects the second air duct 132 and the handle 140, the connecting portion 160 is disposed in an open manner to form an air inlet 133, and the hood 170 covers the air inlet 133. The second duct 132 forms a guide cone 1321 for fixing the motor 110 therein, the motor 110 is disposed inside the guide cone 1321, and the fan 120 is disposed behind the guide cone 1321. The motor 110 includes a rotatable motor shaft that extends from the cone 1321 and is coupled to the fan 120, and the fan 120 is driven by the motor shaft to rotate about the central axis 101.

Referring to fig. 2, the blower 100 further includes a support 180, the support 180 is disposed under the blower 100, and the support 180 may be disposed under the connecting portion 160 or under both the connecting portion 160 and the handle 140. The support 180 serves to support the blower 100 so that the blower 100 as a whole can be smoothly placed on a flat surface.

In one embodiment of the present invention, referring to fig. 1-3, both the first and second air ducts 131, 132 extend along the central axis 101, and the terminal ends 1411 of the slots 141 are positioned above the central axis 101. During operation of the hair dryer 100, airflow from the first air duct 131 exits the outlet 134 substantially in a first direction that coincides with the axial direction of the central axis 101. When the user holds the handle 140 and blows air by using the air blower, the user receives recoil force generated by the air flow jet, and the direction of the recoil force is basically a second direction 102 opposite to the first direction. The user holds the handle 140 near the slot 141, because the tail end 1411 of the slot 141 is positioned above the central axis 101, the slot 141 is positioned above the recoil force direction, the recoil force is positioned below the holding part of the handle 140 held by the user, and the recoil force generates a moment M1 at the holding part, in order to prevent the moment M1 from driving the blower 100 to deviate from the whole machine position, the user needs to bear the gravity of the blower 100 and also needs to provide a force for overcoming the moment M1, so that the fatigue of the user using the blower is increased, and the durable operation is not facilitated.

Referring to fig. 4, the switch 150 is disposed above the central axis 101, and a perpendicular distance between the end 1411 of the slot 141 and the central axis 101 is less than or equal to 80mm, where the perpendicular distance between the end 1411 of the slot 141 and the central axis 101 is a perpendicular line from the end 1411 of the slot 141 to the central axis, and a length of the perpendicular line is a perpendicular distance from the end 1411 of the slot to the central axis.

Referring to fig. 5, a perpendicular distance L2 between the highest point of the grip portion 142 and the central axis 101 is 100mm or less, and the central axis 101 passes through the handle 140. The grip portion 142 is an area for the user to grip, and the highest point thereof may be regarded as the highest point of the grip portion in the area behind the switch 150, or the highest point of the entire grip portion, which does not limit the scope of the invention. This distance allows the blower 100 of the present invention to be constructed such that the handle 140 is closer to the central axis 101, i.e., the height of the handle 140 is closer to the height of the axis of the fan 120, compared to the conventional blower 100, thereby reducing the moment arm of the moment M1, reducing the magnitude of the moment M1 and the burden on the user. Optionally, a ratio of an overlapping area of a projection of the handle 140 in a radial direction of the central axis 101 and a projection of the air duct assembly 130 in the direction to a projection area of the handle 140 in the direction is greater than or equal to 70% and less than or equal to 100%.

Optionally, the blower includes a primary handle and a secondary handle, the primary handle and the secondary handle form a first grip portion and a second grip portion, respectively, and at least one of the first grip portion and the second grip portion is arranged such that the distance between the highest point of the grip portion and the central axis is less than 100 mm. Optionally, the distance between the highest point of the first holding part and the central axis is less than 100 mm.

Correspondingly, referring to fig. 5, the height of the whole blower provided by the invention is reduced, so that the vertical distance L3 between the highest point of the whole blower and the central axis is less than or equal to 120 mm. The blower is made more balanced and the portability of the blower is increased.

The position of the handle 140 of the hair dryer 100 is relatively moved downward relative to the position of the handle 140 of the driven hair dryer 100, so that the handle 140 of the driven hair dryer 100 is closer to the air inlet 133, the ratio of the overlapping area of the projection of the handle 140 in the radial direction of the central axis 101 and the projection of the air duct assembly 130 in the radial direction to the projection area of the handle 140 in the radial direction is greater than or equal to 70% and less than or equal to 100%, and the central axis 101 passes through the handle 140. The area of the handle 140 overlapping the air duct assembly 130 on the central axis 101 increases, thereby affecting the intake of air into the hair dryer 100, and thus interfering with the improvement of the blowing efficiency. Thus, the hood 170 comprises annularly distributed ribs extending in circumferential direction of the central axis 101, such that the air flow can enter the air inlet 133 from the side of the hood 170. The air duct assembly 130 includes an intake vent 133 and an exhaust vent 134. The first air duct 131 connects the air inlet 133 and the air outlet 134, and the second air duct 132 forms an inner air inlet 133. The hood 170 is disposed at the air inlet 133, and the hood 170 is disposed to surround one end of the second air duct 132, so that a part of the air entering from the hood 170 can flow from the front end and the rear end of the air inlet 133 to the inner air inlet 133, thereby ensuring that the air inlet amount of the blower 100 is not disturbed.

Optionally, the ratio of the length of the first air duct 131 in the axial direction of the central axis 101 to the length of the blower 100 in the axial direction of the central axis 101 is greater than or equal to 40% and less than or equal to 60%, so as to improve the balance of the blower 100, and make the blower 100 more in accordance with human mechanics.

Referring to fig. 5, optionally, the switch 150 is disposed above the central axis 101, and a perpendicular distance between the end 1411 of the slot 141 and the central axis 101 is less than or equal to 50mm, where the perpendicular distance between the end 1411 of the slot 141 and the central axis 101 is a perpendicular line from the end 1411 of the slot 141 to the central axis, and a length of the perpendicular line is a perpendicular distance from the end 1411 of the slot to the central axis 101. The vertical distance between the highest point of the holding part 142 and the central axis 101 is not more than 70mm, and the calculation method of the vertical distance between the highest point of the holding part 142 and the central axis 101 is the same as the above.

The highest point of the handle 140 is lower than the highest point of the hood 170, which further reduces the amount of moment generated at the grip by the recoil force generated by the air exiting the blower 100.

Optionally, when the blower 100 is placed horizontally, the central axis 101 extends horizontally, the end 1411 of the slot 141 is at the same height as the central axis 101, that is, the distance between the end 1411 of the slot 141 and the central axis 101 is zero, and the highest point of the handle 140 is lower than the highest point of the hood 170. The user holds the handle 140 with his hand substantially on the central axis 101 so that the moment at the holding location of the recoil force generated by the operation of the blower 100 is zero, and the user only needs to overcome the weight of the blower 100 and the recoil force generated by the blower 100 when operating the blower.

Optionally, the perpendicular distance between the highest point of the grip and the central axis is less than or equal to 140mm, and at least a portion between the highest point of the grip and the battery pack interface is penetrated by the central axis.

Referring to fig. 6, in one embodiment of the present invention, the first air duct 131a includes an inclined portion that makes a front end of the first air duct 131 inclined, e.g., inclined upward. Such that the front end of the first air duct 131a extends along a first axis 103, the first axis 103 intersecting the central axis. At this time, the airflow flows out in the axial direction of the first axis 103, and generates a recoil force in the direction of the first axis 103, the recoil force generating a moment M2 at the grip. The perpendicular distance between the slotted end 1411a and the central axis 101 is not more than 80mm, and the perpendicular distance between the slotted end 1411a and the central axis is a perpendicular line from the slotted end 1411a to the central axis, and the length of the perpendicular line is the perpendicular distance from the slotted end 1411a to the central axis. The magnitude of the moment M2 can be reduced to some extent.

Optionally, other portions of the first air duct 131 are curved, or the joint between the first air duct 131 and the second air duct 132 is curved, and the perpendicular distance between the end 1411 of the slot 141 and the central axis 101 is less than or equal to 80 mm.

Referring to fig. 7, in one embodiment of the present invention, the switch 150b is disposed below the central axis and the perpendicular distance of the slotted tip 1411b from the central axis is 30mm or less. The portion of the handle 140b that is disposed relatively below the air duct is preferably not too low to increase the load on the user to operate the blower 100b, while reducing the moment of recoil of the blower 100 b.

The vertical distance between the highest point of the whole blower and the central axis is less than or equal to 120mm, and the highest point of the whole blower can be positioned at the fan cover or the handle according to the specific position of the handle.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by using equivalent alternatives or equivalent variations fall within the scope of the present invention.

Claims (13)

1. A hair dryer, comprising:

a motor;

a fan driven by the motor to rotate around a central axis;

a power supply device for supplying power to the motor;

at least one handle forming a gripping portion for gripping;

the air pipe assembly forms an air inlet for air inlet and an air outlet for air outlet;

the method is characterized in that:

the vertical distance between the highest point of the holding part and the central axis is less than or equal to 100 mm.

2. The hair dryer of claim 1, wherein:

the handle comprises a switch and a slot for mounting the switch, and the perpendicular distance between the tail end of the slot and the central axis is less than or equal to 80 mm.

3. The hair dryer of claim 2, wherein:

the switch is arranged above the central axis, and the vertical distance between the highest point of the holding part and the central axis is less than or equal to 70 mm.

4. The hair dryer of claim 2, wherein:

the switch is arranged below the central axis, and the perpendicular distance between the slotted end and the central axis is less than or equal to 30 mm.

5. The hair dryer of claim 2, wherein:

the air pipe assembly comprises a second air pipe and a first air pipe, part of the second air pipe is arranged inside the first air pipe, the air outlet is arranged at the tail end of the first air pipe, and the first air pipe extends along the axis of the air pipe.

6. The hair dryer of claim 5, wherein:

the ratio of the length of the first air duct in the axial direction of the central axis to the length of the blower in the axial direction of the central axis is not less than 40% and not more than 60%.

7. The hair dryer of claim 1, wherein:

the vertical distance between the highest point of the holding part and the central axis is less than or equal to 70 mm.

8. The hair dryer of claim 1, wherein:

the vertical distance between the highest point of the whole blower and the central axis is less than or equal to 120 mm.

9. The hair dryer of claim 1, wherein:

the ratio of the overlapping area of the projection of the handle in the radial direction of the central axis and the projection of the air duct assembly in the direction to the projection area of the handle in the direction is greater than or equal to 70% and less than or equal to 100%.

10. The hair dryer of claim 1, wherein:

the hair-dryer still includes the fan housing, the fan housing includes the rib of annular distribution, the rib is in the circumference of central axis is upwards extended.

11. The hair dryer of claim 10, wherein:

the hair dryer further comprises: a support disposed below the blower;

the highest point of the handle is lower than that of the fan cover.

12. The hair dryer of claim 1, wherein:

the central axis passes through the handle.

13. A hair dryer, comprising:

a motor;

a fan driven by the motor to rotate around a central axis;

the battery pack interface is used for connecting a battery pack;

at least a handle forming a gripping portion for gripping;

the air pipe assembly forms an air inlet for air inlet and an air outlet for air outlet;

the method is characterized in that:

the perpendicular distance between the highest point of the holding part and the central axis is less than or equal to 140mm, and at least one part between the highest point of the holding part and the battery pack interface is penetrated by the central axis.

Images