CN208088201U - Hand blower - Google Patents

Abstract

The utility model discloses a hand-held hair dryer, which comprises: a motor, including a rotor and a stator; a fan, driven by the rotor to rotate around a central axis; a casing, including a housing part for accommodating the motor and the fan; The air duct of the airflow; the handle, for the user to hold; the fan is a centrifugal fan, and the fan is combined with the rotor; in the direction along the central axis, the stator and the fan are at least partially overlapped. The hand-held hair dryer disclosed by the utility model has a compact structure and is convenient to use in a narrow space.

Description

Handheld Hair Dryer

technical field

The utility model relates to a hand-held hair dryer, in particular to an electric hand-held hair dryer.

Background technique

A hair dryer is a garden tool used for garden cleaning.

The hair dryer includes a motor and a fan. The motor drives the fan to rotate to generate airflow to blow fallen leaves and the like.

Hand dryers include handles. The user holds the handle to operate the hand-held hair dryer for operation.

Traditional centrifugal hair dryers have larger motors and fans, making the hair dryer larger in size and inconvenient to operate in a narrow space.

Utility model content

In order to solve the deficiencies of the prior art, the purpose of the utility model is to provide a hand-held hair dryer which is small in size and easy to operate in a narrow space.

In order to achieve the above object, the utility model adopts the following technical solutions:

A hand-held hair dryer, comprising: a motor, including a rotor and a stator; a fan, driven by the rotor to rotate around a central axis; a casing, including a housing portion for accommodating the motor and the fan; the casing is formed with an air duct for guiding the airflow generated by the fan ; a handle for the user to hold; the fan is a centrifugal fan, and the fan is combined with the rotor; in the direction along the central axis, the stator and the fan are at least partially overlapped.

Further, the motor is an outer rotor motor; the fan is arranged on the outer periphery of the motor.

Further, in the direction along the central axis, the stator at least partially overlaps with the air duct.

Further, the dimension of the whole formed by the fan and the motor along the direction of the central axis is equal to the dimension of the motor or the fan along the direction of the central axis.

Further, the handle defines a mid-section plane; the handle is at least partially symmetrical about the mid-section plane; the central axis is perpendicular to the mid-section plane; The ratio is greater than or equal to 2 and less than or equal to 3.5.

Further, the handle defines a mid-section plane; the handle is at least partly symmetrical about the mid-section plane; the central axis is perpendicular to the mid-section plane; the size of the accommodating part in the direction of the central axis is smaller than the size of the hand-held hair dryer in the direction of the central axis.

Further, the handle defines a mid-section plane; the handle is at least partially symmetrical about the mid-section plane; the central axis is perpendicular to the mid-section plane; and the air duct is at least partially symmetrical about the mid-section plane.

Further, the ratio of the dimension of the receiving portion in the direction along the central axis to the dimension of the fan in the direction along the central axis is greater than or equal to 1 and less than or equal to 3.

Further, the casing is formed with a first air inlet and a second air inlet; the fan rotates to drive airflow from the first air inlet and the second air inlet into the air duct along the central axis; the first air inlet and the second air inlet are arranged on the machine sides of the shell.

Further, the hand-held hair dryer further includes: a battery pack, which is detachably connected to the casing; a dimension of the accommodating portion in the direction of the central axis is smaller than a dimension of the battery pack in the direction of the central axis.

In the hand-held hair dryer disclosed in the utility model, the stator of the motor and the fan overlap at least partially in the direction of the central axis, thereby reducing the size of the whole composed of the motor and the fan in the direction of the central axis. Makes the handheld hair dryer easy to use in tight spaces.

Description of drawings

Fig. 1 is a perspective view of a hand-held hair dryer;

Fig. 2 is a perspective view of another angle of view of the hand-held hair dryer in Fig. 1;

Fig. 3 is a plan view of the hand-held hair dryer in Fig. 1;

Fig. 4 is an exploded view of the hand-held hair dryer in Fig. 1;

Fig. 5 is a sectional view of the hand-held hair dryer in Fig. 3;

Fig. 6 is a plan view of the fan and motor of the hand-held hair dryer in Fig. 4;

Fig. 7 is a perspective view of the fan and motor of the hand-held hair dryer in Fig. 4;

Fig. 8 is a perspective view of another angle of view of the fan and the motor of the hand-held hair dryer in Fig. 4;

Fig. 9 is a sectional view of the fan and the motor in Fig. 5;

Fig. 10 is a schematic diagram of separation of the fan and the motor in Fig. 6;

Fig. 11 is an exploded view of the motor in Fig. 10 .

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is made concrete introduction.

As shown in FIGS. 1 to 4 , the hand-held hair dryer 100 includes a motor 10 , a fan 20 and a casing 30 .

The motor 10 drives the fan 20 to rotate around the central axis 101 . The fan 20 is a centrifugal fan. As another optional implementation manner, the fan is an axial fan.

The casing 30 accommodates the motor 10 and the fan 20 . The casing 30 is formed with an air duct 35 for guiding the airflow generated by the fan 20 . Specifically, the casing 30 includes a receiving portion 31 . The accommodation part 31 accommodates the motor 10 and the fan 20 .

The casing 30 has a structure of two halves. The cabinet 30 includes a left case 33 and a right case 34 . The left housing 33 and the right housing 34 jointly form an air duct 35 . The motor 10 and the fan 20 are disposed between the left case 33 and the right case 34 .

The handle 50 is for the user to hold. Specifically, the handle 50 is formed by the casing 30 , that is, the handle 50 is a part of the casing 30 . As an optional embodiment, the handle is connected to the casing as an independent part.

Handheld hair dryer 100 also includes a battery pack 40 . The battery pack 40 is electrically connected to the motor 10 . The battery pack 40 supplies power to the motor 10 . The battery pack 40 is detachably connected to the casing 30 . Specifically, the casing 30 is formed with a joint portion 32 . The battery pack 40 is detachably connected to the joint part 32 . As an optional implementation, the hand-held hair dryer includes a cable, and the cable is connected to a mains grid or a battery pack to supply power to the motor.

The handle 50 defines a split surface 102 . The handle 50 is at least partially symmetrical about the split plane 102 . The central axis 101 is perpendicular to the split plane 102 . The hand-held hair dryer 100 is generally symmetrical about the mid-section plane 102 . Those skilled in the art can understand that most of the structure of the hand-held hair dryer 100 is symmetrical with respect to the split plane 102 , and there may be differences in a small part of the structure. The direction perpendicular to the split plane 102 is defined as the width direction.

The center of gravity of the hand-held hair dryer 100 is located in the split plane 102 . The housing 30 is at least partially symmetrical about the midsection plane 102 . The air duct 35 is at least partially symmetrical about the split plane 102 . The battery pack 40 is symmetrical about the split plane 102 . The joint portion 32 is symmetrical with respect to the split plane 102 .

The hand-held hair dryer 100 also includes an air outlet pipe 60 . The air outlet pipe 60 is connected to the casing 30 . The air outlet pipe 60 is formed with an auxiliary air duct. The auxiliary air duct communicates with the air duct 35 .

The casing 30 is formed with a first air inlet 36 , a second air inlet 37 and an air outlet 38 . The fan 20 rotates to drive the air to enter the air channel 35 from the first air inlet 36 and the second air inlet 37 , and to be exhausted from the air outlet 38 .

The airflow enters the air duct 35 from the first air inlet 36 along the direction of the central axis 101 . In other words, the airflow enters the air duct 35 from the first air inlet 36 along a direction perpendicular to the split plane 102 .

The first air inlet 36 and the second air inlet 37 are respectively disposed on two sides of the casing 30 . The direction of the airflow entering the air duct 35 from the first air inlet 36 is opposite to the direction of the airflow entering the air duct 35 from the second air inlet 37 . The right housing 34 forms a first air inlet 36 , and the left housing 33 forms a second air inlet 37 . The direction of the airflow entering the air duct 35 from the first air inlet 36 is perpendicular to the direction of the airflow exiting the air duct 35 from the air outlet 38 . The direction of the airflow entering the air duct 35 from the second air inlet 37 is perpendicular to the direction of the airflow exiting the air duct 35 from the air outlet 38 . The direction in which air flows out of the air duct 35 from the air outlet 38 is perpendicular to the central axis 101 .

The air flow can enter the casing 30 from both sides of the casing 30 , avoiding the problems of excessive noise caused by air intake from one side and easy absorption of foreign matter.

As a specific implementation manner, the first air inlet 36 is the main air inlet. The second air inlet 37 is a cooling air outlet. The airflow entering the air duct 35 through the second air inlet 37 flows through the inside of the motor 10 to dissipate heat for the motor 10 and cool the motor 10 . Specifically, the area of the first air inlet 36 is larger than the area of the second air inlet 37 . As another optional implementation manner, the area of the first air inlet is equal to the area of the second air inlet.

As shown in FIGS. 5 to 10 , the motor 10 includes a rotor 11 and a stator 12 . A fan 20 is coupled to the rotor 11 . The rotor 11 drives the fan 20 to rotate. Specifically, the motor 10 is an outer rotor motor. More specifically, the motor 10 is an outer rotor brushless motor. The fan 20 is provided on the outer periphery of the motor 10 . The fan 20 and the motor 10 form an integral body so that the fan 20 and the motor 10 have a high balance, which is beneficial to reduce vibration.

As shown in FIG. 5 , in the direction along the central axis 101 , the stator 12 at least partially overlaps with the fan 20 . In the direction along the central axis 101 , the stator 12 at least partially overlaps with the air duct 35 . In the direction along the central axis 101 , the stator 12 , the fan 20 and the air duct 35 at least partially overlap. Specifically, the dimension of the fan 20 and the motor 10 in the direction along the central axis 101 is equal to the dimension of the motor 10 in the direction of the central axis 101 . As another implementation manner, the dimension of the whole formed by the fan and the motor along the direction of the central axis is equal to the dimension of the fan along the direction of the central axis.

The structural arrangement of the motor 10 and the fan 20 shortens the size of the fan 20 and the motor 10 in the direction along the central axis 101 , so that the size of the accommodating portion 31 in the direction along the central axis 101 becomes smaller. It avoids the side-by-side arrangement of the fan and the motor of the traditional hair dryer, which causes the excessive size of the hair dryer in the direction of the central axis to cause the width of the hair dryer to be too large, resulting in inconvenient use. The size of the hand-held hair dryer 100 in the width direction is reduced, which is helpful for users to use it in a narrow space. The range of use of the hand-held hair dryer 100 is improved.

As shown in FIG. 3 , the ratio of the dimension L1 of the hand-held hair dryer 100 along the central axis 101 to the dimension L2 of the handle 50 along the central axis 101 is greater than or equal to 2 and less than or equal to 3.5.

As shown in FIG. 3 , the dimension L3 of the receiving portion 31 along the direction of the central axis 101 is smaller than the dimension L1 of the hand-held hair dryer 100 along the direction of the central axis 101 . A dimension L3 of the receiving portion 31 on the central axis 101 is smaller than a dimension L4 of the battery pack 40 in the direction of the central axis 101 .

The receiving portion 31 is disposed at the front of the battery pack 40 . The battery pack 40 is disposed at the rear end of the hand-held hair dryer 100 . In the case of the same battery pack 40 , the size of the accommodating portion 31 is reduced, so that the hand-held hair dryer 100 can be used in a relatively narrow space while maintaining the same battery life. The use of the user will not be affected due to the large width of the accommodating portion 31 .

As shown in FIG. 5 , a ratio of a dimension L3 of the receiving portion 31 along the central axis 101 to a dimension L5 of the fan 20 along the central axis 101 is greater than or equal to 1 and less than or equal to three.

As shown in FIG. 10 , the motor 10 is provided with a cooling fan 13 . The cooling fan 13 drives the air flow through the motor 10 to dissipate heat from the motor 10 . The fan 20 is formed with a mounting hole 21 for mounting the motor 10 . The motor 10 is disposed in the installation hole 21 . The fan 20 is a centrifugal fan. The fan 20 includes blades 22 and a fixing portion 23 . The fixing part 23 is used for fixing and supporting a plurality of blades 22 . Specifically, a plurality of vanes 22 are disposed on one side of the fixing portion 23 . The fan 20 can also be called a single-side intake fan. As another implementation manner, fan blades are provided on both sides of the fixing part. Specifically, the fan blade is symmetrical with respect to the fixed part. The fan can also be called a double-side intake fan.

As shown in FIG. 11 , the motor 10 includes a rotor 11 and a stator 12 . The rotor 11 includes a rotor housing 111 , a rotor shaft 112 , a rotor magnet 113 and a connecting seat 114 . The rotor magnet 113 is fixed to the rotor case 111 . The rotor shaft 112 is fixed to the rotor housing 111 . The connecting base 114 connects the rotor shaft 112 and the rotor casing 111 . The rotor shaft 112 and the rotor housing 111 are fixed to the connection seat 114 . The connecting base 114 forms the cooling fan 13 . The cooling fan 13 serves as a part of the rotor 11 . The stator 12 includes a stator bracket 121 and a stator coil 122 . The stator coil 122 is fixed to the stator bracket 121 . The rotor housing 111 rotates around the stator coils 122 . As shown in FIGS. 10 and 11 , the fan 20 is fixed to the rotor housing 111 and rotates synchronously with the rotor housing 111 .

The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the industry should understand that the above-mentioned embodiments do not limit the utility model in any form, and all technical solutions obtained by means of equivalent replacement or equivalent transformation all fall within the protection scope of the utility model.

Claims (10)

1. A hand-held hair dryer, comprising: Electric machines, including rotors and stators; a fan driven by the rotor to rotate around the central axis; a handle for the user to hold; a housing including a housing portion housing the motor and the fan; It is characterized by: The casing is formed with an air duct for guiding the airflow generated by the fan; the fan is a centrifugal fan coupled to the rotor; In a direction along the central axis, the stator at least partially overlaps the fan. 2. The hand-held hair dryer according to claim 1, characterized in that: The motor is an outer rotor motor; the fan is arranged on the outer periphery of the motor. 3. The hand-held hair dryer according to claim 1, characterized in that: In the direction along the central axis, the stator at least partially overlaps with the air duct. 4. The hand-held hair dryer according to claim 1, characterized in that: The dimension of the whole formed by the fan and the motor along the direction of the central axis is equal to the dimension of the motor or the fan along the direction of the central axis. 5. The hand-held hair dryer according to claim 1, characterized in that: the handle defines a mid-section; the handle is at least partially symmetric about the mid-section; The central axis is perpendicular to the midsection plane; The ratio of the size of the hand-held hair dryer along the central axis to the size of the handle along the central axis is greater than or equal to 2 and less than or equal to 3.5. 6. The hand-held hair dryer according to claim 1, characterized in that: the handle defines a mid-section; the handle is at least partially symmetric about the mid-section; The central axis is perpendicular to the midsection plane; A dimension of the receiving portion in the direction of the central axis is smaller than a dimension of the hand-held hair dryer in the direction of the central axis. 7. The hand-held hair dryer according to claim 1, characterized in that: the handle defines a mid-section; the handle is at least partially symmetric about the mid-section; The central axis is perpendicular to the midsection plane; The air duct is at least partially symmetrical about the mid-section plane. 8. The hand-held hair dryer according to claim 1, characterized in that: A ratio of a dimension of the receiving portion along the direction of the central axis to a dimension of the fan along the direction of the central axis is greater than or equal to 1 and less than or equal to 3. 9. The hand-held hair dryer according to claim 1, characterized in that: The casing is formed with a first air inlet and a second air inlet; The fan rotates to drive airflow from the first air inlet and the second air inlet into the air duct along the central axis; The first air inlet and the second air inlet are arranged on two sides of the casing. 10. The hand-held hair dryer according to claim 1, characterized in that: The hand-held hair dryer also includes: a battery pack detachably connected to the casing; A dimension of the receiving portion in the direction of the central axis is smaller than a dimension of the battery pack in the direction of the central axis.