CN109594510B - Hair drier - Google Patents
Hair drier Download PDFInfo
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- CN109594510B CN109594510B CN201710913870.1A CN201710913870A CN109594510B CN 109594510 B CN109594510 B CN 109594510B CN 201710913870 A CN201710913870 A CN 201710913870A CN 109594510 B CN109594510 B CN 109594510B
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- shell
- user
- airflow
- switch
- housing
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
- E01H1/00—Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
- E01H1/08—Pneumatically dislodging or taking-up undesirable matter or small objects; Drying by heat only or by streams of gas; Cleaning by projecting abrasive particles
- E01H1/0809—Loosening or dislodging by blowing ; Drying by means of gas streams
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Cleaning And Drying Hair (AREA)
Abstract
The invention discloses a hair drier, comprising: the fan comprises an air duct, a motor, a fan, a shell and a first switch; the air duct is formed on the air duct, the handle for a user to hold is formed on the shell, and the first switch is mounted on the shell; the air duct is provided with an air inlet at one end of the air duct, the fan is arranged in the air duct, and blowing airflow entering the air duct from the air inlet can be generated when the fan rotates; the first switch includes: a first operation unit at least partially exposed from the housing for user operation, and a first switch element that controls the motor when the first operation unit is operated by a user; wherein the housing is further formed with an airflow inlet and an airflow outlet; when the fan rotates, heat dissipation airflow which flows into the shell from the airflow inlet and flows out of the shell from the airflow outlet can be generated in the shell; the first switching element is located outside the flow path of the heat dissipating airflow within the housing. The first switch in the hair drier has long service life.
Description
Technical Field
The invention relates to a hair drier, in particular to a switch of the hair drier.
Background
A blower is a garden-like implement that a user may operate to blow grass clippings, leaves, etc. to sweep a garden or garden.
The hair dryer will typically include: a main switch for starting the motor, other function switches, a shell, a circuit board and a blowing nozzle.
The main switch sometimes also integrates a speed regulation function. Because the main switch is arranged on the handle and arranged at the lower side of the handle, the user can hardly observe the stroke of the main switch, so that the user can not easily operate the motor at an ideal rotating speed, and the blowing effect and the blowing efficiency of the hair dryer can not be guaranteed.
The main switch or other function switches are usually arranged in a containing cavity formed by the shell, when the hair dryer runs, radiating airflow flowing through the containing cavity is generated and used for radiating a circuit board in the containing cavity, obviously, the radiating airflow easily blows dust to the main switch or other function switches, and in the past, the main switch or other function switches fail due to excessive dust accumulation.
The blowing nozzle is used for the direction air current of blowing, and the stability of current blowing nozzle is relatively poor, and the air current of blowing moreover velocity of flow can be by more of decay when the blowing nozzle, influences the effect of blowing, and in addition, the air current of blowing can produce great noise when the blowing nozzle.
In addition, the weight of the hair dryer as a whole is usually several kilograms, which causes the user to feel fatigue after long-term use and affects the working efficiency of the user.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a hair drier with long service life.
In order to achieve the above object, the present invention adopts the following technical solutions:
a hair dryer, comprising: the fan comprises an air duct, a motor, a fan, a shell and a first switch; the fan is driven by the motor, the shell is provided with a handle for a user to hold, and the first switch is mounted to the shell; the air duct is provided with an air inlet at one end of the air duct, the fan is arranged in the air duct, and blowing airflow entering the air duct from the air inlet can be generated when the fan rotates; the first switch includes: a first operation unit at least partially exposed from the housing for user operation, and a first switch element that controls the motor when the first operation unit is operated by a user; wherein the housing is further formed with an airflow inlet and an airflow outlet; when the fan rotates, heat dissipation airflow which flows into the shell from the airflow inlet and flows out of the shell from the airflow outlet can be generated in the shell; the first switching element is located outside the flow path of the heat dissipating airflow within the housing.
Furthermore, a partition plate is formed in the shell, and the circulation path of the heat dissipation airflow in the shell and the first switch element are respectively positioned on two sides of the partition plate.
Further, the hair dryer still includes: the circuit board is electrically connected with the motor and the first switch element; the heat dissipation airflow flows through the circuit board.
Further, the hair dryer still includes: a heat dissipating element connected to the circuit board; the heat dissipation airflow flows through the heat dissipation element.
Further, a partition plate for separating the circuit board and the first switching element is formed in the housing.
Further, the heat dissipating member is located on a side of the partition plate where the circuit board is disposed.
Furthermore, the shell comprises a left shell and a right shell which form a whole when in butt joint, the left shell is provided with a left partition plate part, and the right shell is provided with a right partition plate part; when the left shell and the right shell are in butt joint, the left partition plate part and the right partition plate part are combined into a partition plate.
Further, the hair dryer still includes: a main switch for starting the motor; the main switch includes: a main operation unit mounted to the handle, and a main switching element controlling the motor to be started when the main operation unit is operated by a user; the main operation unit includes: an actuating portion for contacting the main switching element; wherein the user's hand can simultaneously hold the main operating unit while holding the handle, and the actuating portion is located outside the flow path of the heat dissipating air flow in the housing.
Further, the first switch is a speed regulating switch for a user to regulate the rotating speed of the motor, and the first operation unit is a knob.
Further, the hair dryer still includes: a second switch including a second operation unit for user operation and a second switching element capable of operating the motor at a maximum rotation speed when the second operation unit is operated by a user; wherein the second operation unit includes a second actuation portion for contacting the second switching element, the second actuation portion being disposed within the housing, the second actuation portion and the second switching element being located outside a circulation path of the heat dissipating airflow within the housing.
The invention has the advantages that: a partition board used for separating the circulation path of the heat dissipation airflow from the first switch is arranged in the shell of the hair drier, so that the first switch is not easy to deposit dust, and the service life of the first switch is prolonged.
Drawings
Figure 1 is a perspective view of a hair dryer;
figure 2 is a plan view of the blower of figure 1;
figure 3 is a top view of the blower of figure 1;
figure 4 is a cross-sectional view of the blower of figure 1 with the battery pack removed;
figure 5 is an exploded view of the blower of figure 1;
figure 6 is a plan view of the blower of figure 1 with the left housing removed;
figure 7 is a plan view of the blower of figure 1 with the right housing removed;
FIG. 8 is an enlarged view of a portion of the structure of FIG. 6;
FIG. 9 is an enlarged view of a portion of the structure of FIG. 7;
FIG. 10 is a plan view of the mouthpiece of FIG. 1;
FIG. 11 is a perspective view of the mouthpiece of FIG. 10;
FIG. 12 is a cross-sectional view of the mouthpiece of FIG. 10;
FIG. 13 is a cross-sectional view of the inner wall of the connection in FIG. 10;
figure 14 is a perspective view of the blower of figure 1 with the hook separated;
FIG. 15 is an enlarged schematic view of a portion of the structure of FIG. 14;
FIG. 16 is a plan view of the hanger in FIG. 14;
FIG. 17 is a perspective view of the hanger in FIG. 14;
fig. 18 is a top view of the hanger in fig. 14.
Detailed Description
The blower 100 shown in fig. 1 to 5 includes: an air duct 11, a motor 12, a fan 13, a battery pack 14, and a housing 15. Wherein, the air duct 11 is formed with an air duct 111 extending along the first straight line 101, and the air duct 11 is formed with an air inlet and an air outlet at two ends of the air duct 111. The motor 12 and the fan 13 are both disposed in the air duct 111, the motor 12 is used for driving the fan 13 to rotate around the first straight line 101, and when the fan 13 rotates, the blowing air flow entering the air duct 111 from the air inlet can be generated. The motor 12 is embodied as an electric motor, and the battery pack 14 is used to power the motor 12. The housing 15 connects the air duct 11 and the battery pack 14, the housing 15 is further formed with a handle 151 for a user to hold, the handle 151 is disposed on the same side of the air duct 11 and the battery pack 14, the housing 15 is further formed around an air inlet space 152 for allowing an air flow to enter the air duct 111, and the air inlet space 152 is open in a plurality of radial directions around the circumference of the first straight line 101. The air duct 11, the air intake space 152 and the battery pack 14 are arranged substantially along the first straight line 101, the air intake space 152 is further provided between the air duct 11 and the battery pack 14, and the handle 151 is also provided at least partially between the air duct 11 and the battery pack 14, so that the center of gravity of the blower 100 and the handle 151 can be as close as possible in the direction along the first straight line 101, thereby enabling a user to operate the blower 100 more stably.
For convenience of explaining the technical solution of the present invention, directions indicated by arrows in fig. 1 are defined as: upper side, lower side, left side, right side, front side, and back side.
The air duct 11 is substantially a cylinder surrounding the first line 101, and both ends of the air duct 11 along the first line 101 are open to form an air inlet and an air outlet. The motor 12 and the fan 13 are disposed at a portion of the air path 111 near the air intake, and the fan 13 is disposed at a rear side of the motor 12. An air inlet cover 16 is further installed at a position where the air inlet is formed in the air duct 11, the air inlet cover 16 is in a grid shape, the air inlet cover 16 enables blowing air flow to uniformly enter the air duct 111, and the air inlet cover 16 can also prevent large-particle impurities from entering the air duct 111.
The housing 15 further includes: a coupling portion 153, a connecting structure 154, and a base 155. The coupling portion 153 is used for detachably coupling the battery pack 14 to the housing 15 in a direction parallel to the first line 101, the connecting structure 154 is used for connecting the air duct 11 and the battery pack 14, and the connecting structure 154 surrounds the air inlet space 152. The base 155 is provided at the lower side of the air duct 11 and the battery pack 14 for supporting the whole blower 100.
The housing 15 is also substantially symmetrical about a plane of symmetry 102 parallel to the first line 101. Specifically, the housing 15 includes a left housing 156 and a right housing 157 that are symmetrical about the symmetry plane 102, and the left housing 156 and the right housing 157 may be two separate pieces that can be fixedly connected by screws. The left shell 156 and the right shell 157 form the shell 15 when being butted, and a containing cavity 158 is formed around the left shell 156 and the right shell 157 when being butted.
To control the blower 100, the blower 100 further comprises: the motor 12 includes a circuit board 17, a main switch 18, a first switch and a second switch, wherein the circuit board 17 is disposed in a containing cavity 158 formed in the housing 15, in this embodiment, the first switch is specifically a first speed regulating switch 19, the second switch is a second speed regulating switch 20, and the main switch 18, the first speed regulating switch 19 and the second speed regulating switch 20 are all electrically connected to the circuit board 17, so as to control the motor 12.
A main switch 18 is provided on a handle 151 of the housing 15, the main switch 18 being embodied as a trigger for operation by a user to activate the motor 12. As shown in fig. 6 to 9, the main switch 18 includes: a main operation unit 181 and a main switching element 182. The main operation unit 181 is attached to the grip 151, the user can hold the main operation unit 181 with the hand of the user holding the grip 151 while holding the grip 151, and the main switching element 182 can control the motor 12 to be started when the main operation unit 181 is operated by the user. More specifically, the palm of the user's hand is in contact with the grip 151 and the bent fingers of the user are in contact with the main operation unit 181, so that the user can hold the grip 151 and the main operation unit 181 simultaneously with one hand, and thus the user can conveniently and rapidly start the motor 12 while holding the grip 151, and also can release the main switch 18 when the user's hand releases the grip 151. The main operating unit 181 forms a rotational connection with the housing 15 about a second straight line 103, the second straight line 103 being perpendicular to the first straight line 101 and the second straight line 103 also being perpendicular to the plane of symmetry 102. The main operation unit 181 includes: an operating portion 181a and an actuating portion 181b, the operating portion 181a exposing the housing 15 for operation by a user, the actuating portion 181b being disposed within the handle 151, that is, within the accommodating chamber 158. The actuating portion 181b is further in contact with the main switch element 182, the main switch element 182 is connected to the circuit board 17, and when the user contacts the operating portion 181a and rotates the first operating unit 191 relative to the housing 15 about the first straight line 101, the position of the actuating portion 181b is changed to trigger the main switch element 182, and the main switch element 182 controls the motor 12 to start.
A first speed switch 19 is mounted on the housing 15, the first speed switch 19 being for a user to adjust the speed of the motor 12. In the direction along the first straight line 101, the first speed adjusting switch 19 is further located between the battery pack 14 and the air inlet, so that the first speed adjusting switch 19 can be disposed as close to the handle 151 as possible, so that the user's hand can contact the first speed adjusting switch 19 when the user holds the handle 151, thereby facilitating the user to adjust the rotation speed of the motor 12.
The first speed regulating switch 19 includes: a first operation unit 191 and a first switch element 192, the first operation unit 191 is used for operation by a user, the first switch element 192 is connected with the circuit board 17, and thus, the circuit board 17 is electrically connected with the motor 12 and the first switch element 192. When the first operating unit 191 is operated by the user, the first switching element 192 can control the motor 12 to operate at different rotational speeds. The first operating unit 191 is disposed close to the handle 151, and a distance between two closest points of the first operating unit 191 and the main operating unit 181 is less than or equal to 5cm, and further, a distance between two closest points of the first operating unit 191 and the main operating unit 181 is less than or equal to 2cm, so that a thumb of a hand of the user holding the handle 151 can contact the first operating unit 191 when the user holds the handle 151 and the main operating unit 181, thereby facilitating the user to perform speed adjustment in real time. The first operating unit 191 and the housing 15 form a rotational connection with a third straight line 104 as an axis, the third straight line 104 and the second straight line 103 are parallel to each other, and the third straight line 104 and the first straight line 101 are perpendicular to each other. The first operation unit 191 is a knob rotatably coupled to the housing 15, and the user adjusts the rotation speed of the motor 12 by rotating the knob. The first operating unit 191 is also disposed on one side of the symmetry plane 102 of the housing 15, and the first operating unit 191 may be specifically mounted on the left housing 156 or the right housing 157, and in this embodiment, the first operating unit 191 is disposed on the left housing 156.
In fact, in the present embodiment, the main switch 18 is a trigger for starting the blower 100, so that after the user operates the main switch 18 to start the motor 12, the user can also adjust the rotation speed of the motor 12 by adjusting the angle of rotation of the main operation unit 181 relative to the housing 15. That is, the user can adjust the rotational speed of the motor 12 by means of the main switch 18 as well as by means of the first speed switch 19. If the user can only operate the main switch 18 to adjust the speed, it is obvious that the user cannot accurately adjust the rotation speed of the motor 12 to achieve the desired blowing effect, and at this time, the user can only judge by relatively rough experience, which is easy to deviate from the expected effect, but the hair dryer 100 of the present application is additionally provided with the first speed adjusting switch 19, the second speed adjusting switch 19 is arranged differently from the main switch 18, and the first speed adjusting switch 19 is also arranged outside the holding area of the handle 151, so that the user can easily observe the stroke generated by the first operating unit 181, thereby adjusting the rotation speed of the motor to achieve the desired blowing effect, and in addition, the housing 15 can also be provided with scales reflecting the stroke of the first operating unit 181. Thus, the first speed regulating switch 18 is arranged on the hair drier 100 for the user to regulate the rotating speed of the motor 12, so that the flow rate of the blowing air flow of the hair drier 100 is reasonable, the problem that fallen leaves caused by overlarge flow rate are easy to blow away can be avoided, the problem of low efficiency caused by too small flow rate can also be avoided, and the hair drier 100 can give consideration to the blowing effect and the blowing efficiency.
The hair dryer 100 further includes a control circuit capable of controlling the rotational speed of the motor 12 in accordance with the angle of rotation of the main operation unit 181 relative to the housing 15 when the main operation unit 181 is activated by a user, and capable of controlling the motor 12 to be activated when the main operation unit 181 is not activated and the first operation unit 191 is activated by a user. That is, when the main operation unit 181 is not triggered, the user may also start the motor 12 by operating the first operation unit 191 and may also adjust the rotation speed of the motor 12 by operating the first operation unit 191 after the motor 12 is started. In addition, when the user adjusts the rotation speed of the motor 12 by operating the first operating unit 191, if the user does not trigger the main operating unit 181 and stops triggering the first operating unit 191 so that the first operating unit 191 keeps rotating at a position rotated by a certain angle, the control device will control the motor 12 to rotate at a certain rotation speed, thereby achieving the purpose of cruise control at a constant speed. In this way, the user can operate either one of the main operation unit 181 and the first operation unit 191 to start the motor 12, or can adjust the rotation speed of the motor 12 by rotating either one of the main operation unit 181 and the first operation unit 191.
The second speed regulating switch 20 includes a second operating unit 201 and a second switching element 202, the second operating unit 201 is at least partially exposed from the housing 15, and the second switching element 202 is connected to the circuit board 17 such that the second switching element 202 enables the motor 12 to operate at the maximum rotation speed when the second operating unit 201 is operated by a user. The second operation unit 201 is a button 221a provided on the grip 151, and the second operation unit 201 and the main operation unit 181 are provided on the upper and lower sides of the grip 151, respectively. The second operation unit 201 further includes: a second actuator portion 201a, the second actuator portion 201a being disposed within the receiving cavity 158 of the housing 15, the second actuator portion 201a being for contact with a second switch unit. The plane of symmetry 102 also passes through the second operating unit 201, i.e. the second operating unit 201 is arranged partly at the left housing 156 and partly at the right housing 157.
As shown in fig. 2, the housing 15 is further formed with an airflow inlet 15a and an airflow outlet 15b, the airflow inlet 15a communicates with the accommodating chamber 158 of the housing 15 and the outside, and the airflow outlet 15b also communicates with the accommodating chamber 158 and the outside. When the fan 13 rotates, a heat dissipation airflow that enters the housing 15 from the airflow inlet 15a and then exits the housing 15 from the airflow outlet 15b can be generated in the housing 15, and the heat dissipation airflow can dissipate heat of the electronic component inside the housing 15. The airflow outlet 15b is also open towards the air inlet space 152, so that after the heat dissipation airflow exits from the airflow outlet 15b, the heat dissipation airflow at least partially flows into the air duct 111 through the air inlet under the action of the negative pressure at the air inlet space 152.
As shown in fig. 4 to 9, the housing 15 is further formed with a partition 159, both ends of the partition 159 are connected to the inner wall of the housing 15, and the partition 159 partitions the receiving chamber 158 of the housing 15. The airflow inlet 15a and the airflow outlet 15b are located on the same side of the partition 159. The circuit board 17 is disposed on the side of the partition 159 having the airflow inlet 15 a. Thus, the heat dissipation airflow can flow through the circuit board 17, thereby dissipating heat from the circuit board 17. The blower 100 further includes a heat dissipating member 21, the heat dissipating member 21 is connected to the circuit board 17, the heat dissipating member 21 and the circuit board 17 are located on the same side of the partition 159, and the heat dissipating member 21 may be made of a metal material such as copper or aluminum. Thus, the heat dissipating airflow also flows through the heat dissipating member 21, and the heat transferred from the circuit board 17 to the heat dissipating member 21 is carried out of the blower 100 by the heat dissipating airflow, thereby further improving the heat dissipating effect.
The first switching element 192 of the first speed regulation switch 19 and the second switching element 202 of the second speed regulation switch 20 are disposed on the same side of the partition 159, and the first switching element 192 and the second switching element 202 are disposed on a side of the partition 159 away from the circuit board 17, that is, the circulation path of the heat dissipation airflow in the housing 15 and the first switching element 192 are respectively located on both sides of the partition 159, and the circulation path of the heat dissipation airflow in the housing 15 and the second switching element 202 are also respectively located on both sides of the partition 159. In this way, the first switching element 192 and the second switching element 202 are located outside the circulation path of the heat dissipation airflow in the housing 15, so that dust brought by the heat dissipation airflow can be prevented from entering the side of the partition 159 where the first switching element 192 and the second switching element 202 are located, and the dust can be prevented from affecting the effectiveness of the first switching element 192 and the second switching element 202. Further, the actuating portion 181b of the main switch 18 and the second actuating portion 201a of the second speed regulation switch 20 are disposed on the side of the partition 159 away from the circuit board 17, and the portion of the partition 159 that contacts the actuating portion 181b is disposed on the side of the partition 159 away from the circuit board 17, so that the actuating portion 181b and the second actuating portion 201a are located outside the flow path of the heat dissipation airflow in the housing 15, thereby preventing dust from adhering to the actuating portion 181b and the second actuating portion 201a and causing the actuating portion 181b and the second actuating portion 201a to fail. The arrows in fig. 4 generally illustrate the direction of the flow of the heat dissipating air.
The left case 156 is formed with a left partition portion 159a, the right case 157 is formed with a right partition portion 159b, and the left partition portion 159a and the right partition portion 159b are combined to form a partition 159 when the left case 156 and the right case 157 are butted.
As shown in fig. 1 and 5, the blower 100 further includes a blowing nozzle 22, the blowing nozzle 22 is detachably connected to the air duct 11, and the blowing nozzle 22 is further installed at one end of the air duct 11 forming the air outlet. As shown in fig. 4, the blowing nozzle 22 is formed with a blowing passage 22a, the blowing passage 22a communicating with the air passage 111, the blowing passage 22a extending in the direction of the first straight line 101. When the fan 13 rotates, the blowing air flows through the air passage 111 and the blowing passage 22a in order, and then is blown toward the fallen leaves and the like.
As shown in fig. 10 to 13, the mouthpiece 22 includes: a fitting part 221, a blowing part 222, and a connecting part 223. The fitting part 221 is used for mounting the mouthpiece 22 to the air duct 11, the blowing part 222 is formed with a blowing port 222a for blowing air, one end of the connecting part 223 is connected to the fitting part 221, the other end is smoothly connected to the blowing part 222, and the connecting part 223 makes the flow velocity of the blowing air flow become large when passing through the connecting part 223, thereby improving the blowing effect.
Specifically, the fitting part 221 is fitted around the outer wall of the air duct 11, the outer wall of the fitting part 221 is further formed with a button 221a, the inner side of the button 221a is formed with a locking groove 221b, the outer wall of the air duct 11 is formed with a protrusion 112 that can be inserted into the locking groove 221b, and the mouthpiece 22 can be quickly mounted to the air duct 11 by a user through the engagement of the locking groove 221b and the protrusion 112. The fitting portion 221 may be embodied as a cylinder around the first axis. The inner wall of the fitting part 221 is further formed with an inner guide part 221c, the outer wall of the air duct 11 is formed with an outer guide part 113, and the fitting part 221 is fitted to the air duct 11 in the direction of the first straight line 101 by the cooperation of the inner guide part 221c and the outer guide part 113. Specifically, the inner guide portion 221c is a groove disposed on the inner wall of the assembly portion 221, the groove extends in a direction parallel to the first straight line 101, the outer guide portion 113 is a protrusion disposed on the outer wall of the air duct 11, the protrusion also extends in a direction parallel to the first straight line 101, when the assembly portion 221 is coupled to the air duct 11, the protrusion slides in the groove in a direction parallel to the first straight line 101, so as to play a role of guiding, and the rotation of the mouthpiece 22 relative to the air duct 11 can be limited by the cooperation of the groove and the protrusion.
In addition, the ratio of the length L1 of the air duct 11 in the direction of the first straight line 101 to the length L2 of the assembly part 221 in the direction of the first straight line 101 is greater than or equal to 7 and less than or equal to 11, the ratio of the maximum circumference of the assembly part 221 in the direction around the first straight line 101 to the length of the assembly part 221 in the direction of the first straight line 101 is greater than or equal to 3 and less than or equal to 4.5, and further, the length of the assembly part 221 in the direction of the first straight line 101 is greater than or equal to 50mm, so that the length of the assembly part 221 in the direction of the first straight line 101 is sufficiently long, the stability of the blowing nozzle 22 after being mounted on the air duct 11 is improved, the blowing nozzle 22 is prevented from shaking, the blowing effect is improved, and noise.
The blowing portion 222 is for blowing air, and the blowing portion 222 is a revolving body having the first straight line 101 as a rotation center. The inner wall of the blowing portion 222 forms a cylindrical passage 222b around the first straight line 101, and the cylindrical passage 222b is a part of the blowing passage 22a, so that the blowing port 222a is circular, thereby making the range of blowing air by the hair dryer 100 relatively large and the air outlet relatively uniform.
The connection part 223 is disposed between the fitting part 221 and the blowing part 222, and the connection part 223, the fitting part 221 and the blowing part 222 are integrally molded. The connection portion 223 is also a rotation body having the first straight line 101 as a rotation center. The inner wall of the connection portion 223 is further formed with a connection passage 223a around the first straight line 101, the connection passage 223a is a part of the blowing passage 22a, and both ends of the connection passage 223a may be engaged with the air passage 111 and the cylindrical passage 222b, respectively. The connection passage 223a is a revolving body structure having the first straight line 101 as a rotation center.
In the present embodiment, the connecting channel 223a gradually decreases along the first straight line 101 from the mounting portion 221 to the blowing portion 222, that is, the connecting channel 223a gradually decreases from the back to the front, so that the blowing air flow is accelerated when flowing through the connecting channel 223 a.
The connecting channel 223a is symmetrically arranged with respect to the symmetry plane 102, and the cross section of the connecting channel 223a in the symmetry plane 102 is a two-segment symmetrical curve 223 b. Both ends of the curve 223b are connected to the fitting part 221 and the blowing part 222. The included angle between the tangent line of each point on the curve 223b and the first straight line 101 is firstly enlarged and then reduced from one end of the curve 223b connected with the connecting part 223 to one end connected with the blowing part 222, so that the connecting channel 223a presents a streamline structure, the noise is reduced, the energy loss is reduced, and the blowing effect is improved.
The ratio of the length L1 of the air duct 11 in the direction of the first straight line 101 to the length L3 of the connecting portion 223 in the direction of the first straight line 101 is greater than or equal to 6 and less than or equal to 13, so that the length of the connecting portion 223 is not too long, and the energy of the blowing air flow is not attenuated due to too long flowing path, and the length of the connecting portion 223 is not too short, and the energy of the blowing air flow is not attenuated due to the insufficient smoothness of the connecting passage 223 a.
As shown in fig. 14 to 18, the hair dryer 100 further includes a hook 23 for hanging the hair dryer 100 on a user's belt, harness, or the like, so that the user can bear a part of the weight of the hair dryer 100 by the harness when operating the hair dryer 100, thereby reducing the force on the user's hand and thus reducing the user's fatigue.
The hook 23 specifically includes: a mounting portion 231 and a hook body 232, the mounting portion 231 being used to mount the hook 23 to the housing 15, and the hook body 232 being used to contact the harness to effect suspension of the hair dryer 100. Wherein, the hook body 232 is formed with an opening 232a along a curved line, the opening 232a is opened, and the user can couple the strap to the hook 23 through the opening 232 a. In the present invention, the distance between the hook 23 and the center of gravity G of the blower 100 when the battery pack 14 is included is 50mm or more and 80mm or less, which enables the user to operate the blower 100 relatively stably.
Specifically, the hook 23 is also provided at the joint 153 of the case 15 and near the battery pack 14. The hook 23 is provided on a side of the intake vent adjacent to the battery pack 14 in a direction along the first line 101. Further, the hook 23 is also disposed on the side of the air inlet cover 16 adjacent to the battery pack 14 in the direction along the first straight line 101. Thus, the position of the hook 23 is set reasonably, so that the user can conveniently hold the handle 151 and stably operate the hair dryer 100 when hanging the hair dryer 100 on the harness.
The mounting portion 231 includes a mounting surface 231a extending in a plane parallel to the first line 101 and also parallel to the plane of symmetry 102. When the hook 23 is mounted to the housing 15 through the mounting portion 231, the mounting surface 231a will be attached to the surface of the housing 15, thereby avoiding wobbling and loosening of the hook 23. The surface of the housing 15 is further formed with insertion grooves 15c in a recessed manner, the mounting surface 231a is formed with insertion portions 231b facing the housing 15, the number of the insertion grooves 15c is 2, the number of the insertion portions 231b is also 2, and the two insertion portions 231b are inserted into the corresponding insertion grooves 15c, respectively. The mounting surface 231a is also formed with a through hole 231c penetrating the mounting surface 231a in a direction perpendicular to the symmetry plane 102, and then inserted into the housing 15 through the through hole 231c by a fastener, thereby achieving the fixation of the hook 23 to the housing 15. The fastener may be a screw. The two insertion portions 231b are also respectively provided at both sides of the through hole 231 c.
In the present invention, the number of the hooks 23 is one. It is understood that, in other embodiments, the number of the hooks 23 may also be 2, two hooks 23 may be respectively disposed on both sides of the symmetry plane 102, and specifically, two hooks 23 are respectively disposed on the left shell 156 and the right shell 157, so as to adapt to the operation habit of the user.
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 (9)
1. A hair dryer, comprising:
the air duct is formed with an air duct;
the motor is arranged in the air duct;
a fan drivable by the motor;
a housing formed with a handle for a user to hold;
the air duct is arranged at one end of the air duct and is provided with an air inlet, and the fan is arranged
The fan is arranged in the air duct and can generate blowing air flow entering the air duct from the air inlet when rotating;
the method is characterized in that:
the hair dryer further comprises:
a first switch mounted to the housing;
the first switch includes:
the first operation unit at least partially exposes the shell for operation of a user;
a first switching element that controls the motor when the first operation unit is operated by a user;
wherein the housing is further formed with an airflow inlet and an airflow outlet; when the fan rotates, a heat dissipation airflow which flows into the shell from the airflow inlet and flows out of the shell from the airflow outlet can be generated in the shell; a partition plate is formed in the shell, a circulation path of the heat dissipation airflow in the shell and the first switch element are respectively located on two sides of the partition plate, and the first switch element is located outside the circulation path of the heat dissipation airflow in the shell.
2. The hair dryer of claim 1, wherein:
the hair dryer further comprises:
a circuit board electrically connected to the motor and the first switching element;
the heat dissipating airflow flows through the circuit board.
3. The hair dryer of claim 2, wherein:
the hair dryer further comprises:
a heat dissipation element connected with the circuit board;
the heat dissipation airflow flows through the heat dissipation element.
4. The hair dryer of claim 3, wherein:
a partition plate for separating the circuit board and the first switching element is formed in the housing.
5. The hair dryer of claim 4, wherein:
the heat dissipation element is located on one side of the partition plate where the circuit board is located.
6. The hair dryer of claim 4, wherein:
the shell comprises a left shell and a right shell which form a whole when in butt joint, the left shell is provided with a left partition plate part, and the right shell is provided with a right partition plate part; when the left shell and the right shell are in butt joint, the left partition plate part and the right partition plate part are combined into the partition plate.
7. The hair dryer of claim 1, wherein:
the hair dryer further comprises:
a main switch for starting the motor;
the main switch includes:
a main operation unit mounted to the handle;
a main switching element that controls the motor to start when the main operation unit is operated by a user;
the main operation unit includes:
an actuating portion for contacting the main switching element;
wherein the handle is configured to be held by a user's hand while the user's hand is holding the main operating unit, and the actuation portion is located outside the flow path of the heat dissipating airflow in the housing.
8. The hair dryer of claim 6, wherein:
the first switch is a speed regulating switch for a user to regulate the rotating speed of the motor, and the first operation unit is a knob.
9. The hair dryer of claim 1, wherein:
the hair dryer further comprises:
a second switch including a second operation unit for user operation and a second switching element capable of operating the motor at a maximum rotation speed when the second operation unit is operated by a user;
wherein the second operation unit includes a second actuation portion for contacting the second switching element, the second actuation portion being disposed within the housing, the second actuation portion and the second switching element being located outside a circulation path of the heat dissipation airflow within the housing.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710913870.1A CN109594510B (en) | 2017-09-30 | 2017-09-30 | Hair drier |
| PCT/CN2018/095423 WO2019062279A1 (en) | 2017-09-30 | 2018-07-12 | Blower |
| US16/824,094 US11788538B2 (en) | 2017-09-30 | 2020-03-19 | Blower having multiple control switches |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710913870.1A CN109594510B (en) | 2017-09-30 | 2017-09-30 | Hair drier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109594510A CN109594510A (en) | 2019-04-09 |
| CN109594510B true CN109594510B (en) | 2020-09-01 |
Family
ID=65955491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710913870.1A Active CN109594510B (en) | 2017-09-30 | 2017-09-30 | Hair drier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109594510B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113305788B (en) * | 2020-02-27 | 2022-09-20 | 南京泉峰科技有限公司 | Long rod type electric tool |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200943194Y (en) * | 2006-03-01 | 2007-09-05 | 南京德朔实业有限公司 | Air blower |
| FR2973815B1 (en) * | 2011-04-07 | 2014-08-29 | Pellenc Sa | AUTONOMOUS ELECTROPORTATIVE BLOWER WITH MODULAR AIR OUTPUT SPEED |
| CN203222756U (en) * | 2013-03-29 | 2013-10-02 | 南京德朔实业有限公司 | Handheld blower |
| CN108755531B (en) * | 2015-05-11 | 2020-06-02 | 南京德朔实业有限公司 | Hair drier |
| CN106284156B (en) * | 2015-05-15 | 2019-01-18 | 苏州宝时得电动工具有限公司 | Blower |
| CN105840531A (en) * | 2016-05-31 | 2016-08-10 | 常州格力博有限公司 | Air blower |
-
2017
- 2017-09-30 CN CN201710913870.1A patent/CN109594510B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109594510A (en) | 2019-04-09 |
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Address after: 211106 No. 529, 159, Jiangjun Avenue, Jiangning District, Nanjing, Jiangsu Province Patentee after: Nanjing Quanfeng Technology Co.,Ltd. Address before: 211106, No. 159, general road, Jiangning economic and Technological Development Zone, Nanjing, Jiangsu Patentee before: NANJING CHERVON INDUSTRY Co.,Ltd. |