CN209761815U

CN209761815U - Portable practical fan

Info

Publication number: CN209761815U
Application number: CN201920558302.9U
Authority: CN
Inventors: 韦荣清
Original assignee: Dongguan Shixingsheng Electronic Technology Co Ltd
Current assignee: Dongguan Shixingsheng Electronic Technology Co Ltd
Priority date: 2019-04-23
Filing date: 2019-04-23
Publication date: 2019-12-10
Anticipated expiration: 2029-04-23

Abstract

The utility model discloses a portable practical fan, including portable fan aircraft nose, bracing piece, base, battery and circuit assembly, the back of aircraft nose is fixed with a roating seat, and roating seat and bracing piece swing joint form the structure that can rotate from top to bottom, and the bottom of bracing piece forms the fixed knot structure that can conveniently dismantle through the grafting mode with the base. The utility model has the advantages that the base and the fan are made into the structure which can be conveniently separated, thereby being beneficial to improving the portable effect, the fan supporting rod can be directly held by hand to blow when going out for traveling, and the lifting lug connecting belts can be arranged on the two sides of the fan head to be sleeved on the neck to blow, so that the use is more convenient; the base design can be as cell phone stand, increases its service function, and the fan head can rotate and arbitrary selection angle about-45- +45 degrees, is convenient for blow head, chest and belly. In addition, the fan speed is adjusted by designing a simple circuit in a mode of changing the duty ratio of the voltage signal.

Description

Portable practical fan

Technical Field

The utility model relates to a fan product technical field, concretely relates to portable fan.

Background

The fan is widely used for cooling in various fields due to low cost, low power consumption and convenient use, and is most commonly used for indoor floor fans, table fans, wall fans and the like. However, such fans are generally cumbersome and inconvenient to carry. Therefore, a portable fan has been invented by some people, and the fan can be taken along for use when people go out or go to the occasion without the fan or the air conditioner. However, the current portable fans have the following problems that most of the portable fans can not shake the head, and a few of the portable fans can shake the head, but can shake the head left and right, and can not shake the head up and down, so that the head and the body cannot blow together conveniently; secondly, the bracing piece generally can not conveniently be dismantled the separation with the base, need carry together with the base when leading to carrying, and not only more hard, simultaneously because the base is great heavier to cause inconvenient handheld use. In addition, the current portable fans can only be placed for use or held by hands, which causes inconvenience for certain applications.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is the defect of prior art, provide a simple structure, both conveniently place the use, conveniently hand the use again, can conveniently blow portable practical fan of health and head.

In order to solve the technical problem, the utility model adopts the following technical scheme: the utility model provides a portable practical fan, including portable fan aircraft nose, bracing piece, base, battery and circuit assembly, its characterized in that: the back of aircraft nose is fixed with a roating seat, and roating seat and bracing piece swing joint form the structure that can rotate from top to bottom, and the bottom of bracing piece forms the fixed knot structure that can conveniently dismantle through the grafting mode with the base.

Furthermore, the base is provided with an inserting hole, the lower section of the supporting rod is sleeved with a rod sleeve made of a soft rubber sleeve, the friction force is better, the supporting rod is not easy to fall off and shake after being inserted, and the supporting rod and the rod sleeve are inserted into the inserting hole together to form a fixed structure with the base.

Furthermore, the lower section of the supporting rod is provided with an inserting rod, the outer diameter of the inserting rod is smaller than the outer diameter of the main body of the supporting rod, and the rod sleeve is sleeved with the inserting rod to form a structure flush with the surface of the main body of the supporting rod; the back of the insertion rod, the back of the rod sleeve and the back of the insertion hole are respectively provided with a positioning surface with a planar structure, the positioning surface of the rod sleeve is matched with the positioning surface of the insertion rod, the positioning surface of the insertion hole is matched with the positioning surface of the rod sleeve, and the positioning surfaces of the insertion rod, the rod sleeve and the rod sleeve are sequentially tightly matched to form a positioning structure of the support rod.

Furthermore, a fixed head is arranged at the top end of the supporting rod, and the rotating seat is arranged on the fixed head through a fixed shaft; the rotary seat is provided with a key groove, the fixed shaft is provided with a spline, and the spline is embedded into the key groove to form an assembly structure of the rotary seat and the fixed shaft, so that the rotary seat forms a rotation angle from minus 45 degrees below a horizontal line to plus 45 degrees above the horizontal line, and the belly, the chest and the head can be conveniently blown by holding the fan by hands; the two ends of the fixed shaft are respectively provided with a shaft cap, the shaft cap at one end and the fixed shaft are of an integrated structure, the shaft cap at the other end is tightly inserted on the rotating seat through a bolt on the shaft cap, and the outer end faces of the shaft caps at the two ends are flush with the rotating seat.

Furthermore, a mobile phone supporting part protruding upwards is arranged on the top face of the front part of the base, a mobile phone support structure is formed by matching the mobile phone supporting part and the supporting rod, a mobile phone can be placed on the mobile phone supporting part and then is leaned against the supporting rod, and the mobile phone can be blown and seen at the same time.

Furthermore, two sides of the machine head are respectively provided with a lifting lug, the two lifting lugs form a bilateral symmetry structure, and the fan can be hung up by a rope for use, such as being hung on a neck or being hung on a wall.

Further, the battery is rechargeable lithium battery, is equipped with the interface that charges on the bracing piece.

Preferably, the charging interface is a TYPE-C interface, a LIGHT TNING interface or a MIRCO-USB interface.

The circuit of the circuit component comprises a fan control chip U1 and a charging management chip U2, the models of the fan control chip U1 and the charging management chip U2 are OXOF11CB and TP4056 respectively, a charging interface is connected with an input pin of the charging management chip U2, a battery is connected with an output pin of the charging management chip U2, and the fan control chip U1 is connected with the battery; the negative pole of the motor MG1 is connected with a MOS tube Q2 to form a negative pole EN end, the negative pole EN end is connected with a pin 2 of the fan control chip U1, the positive pole of the motor MG1 is connected with a battery through an inductor L1 in one way, the other end is connected with a MOS tube Q1 to form a positive pole NMOS end, and the positive pole NMOS end is connected with a pin 4 of the fan control chip U1; a pin 5 of the fan control chip U1 is connected to a control switch MODE.

A charging process indicator light red light-emitting diode D5 and a full indicator light green light-emitting diode D4 are also arranged between the charging management chip U2 and the charging interface; and a background lamp consisting of a triode and an LED is connected out of a pin 7 of the fan control chip U1 and is arranged on the machine head.

The DC5V power supply is inserted through a charging interface MIC5pin socket, and the lithium battery is charged through a charging management chip U2; the whole charging process is controlled, and overcharge, short circuit and overheating are prevented; when the charging is performed, the red light of the red light-emitting diode D5 is always on, when the charging is performed, the green light of the green light-emitting diode D4 is always on, and the light-emitting diode D5 is off. When a control switch MODE key is pressed, a fan control chip U11 acquires signals and is processed by an internal MCU (microprogrammed control Unit), then the internal MCU opens a motor cathode EN end through an MOS (metal oxide semiconductor) tube Q2, outputs PWM (pulse width modulation) through a motor anode NMOS end, and BOOSTs an BOOST circuit formed by an inductor L1, an MOS tube Q1 and a diode SS 24; the obtained voltage is filtered by capacitors C2 and C3 and is sent to the positive pole of the motor, so that the motor works; and a voltage division feedback circuit consisting of resistors R4 and R3 corrects the voltage at the motor end to stabilize the voltage of the motor during working. The function of the control switch Mode key is divided into 3 gears, key signals at different time are collected through an MCU in a fan control chip U1, the duty ratio of PWM at the NMOS end of the positive electrode of the motor is changed, and therefore voltage at two ends of the motor is adjusted, and wind power size conversion is achieved. The backlight can be turned on/off by pressing the Mode button of the control switch for about 2S. In the motor working process, when the voltage of the lithium battery is lower than about 3.0V, the red light 1HZ of the light-emitting diode D3 (connected with the pin 3 of the fan control chip U1) flickers to prompt a user to charge.

The utility model has the advantages that the base and the fan are made into the structure which can be conveniently separated, thereby being beneficial to improving the portable effect, the fan supporting rod can be directly held by hand to blow when going out for traveling, and the lifting lug connecting belts can be arranged on the two sides of the fan head to be sleeved on the neck to blow, so that the use is more convenient; the base design can be as cell phone stand, increases its service function, and the fan head can rotate and arbitrary selection angle about-45- +45 degrees, is convenient for blow head, chest and belly.

Drawings

FIG. 1 is a three-dimensional structure of the present invention;

FIG. 2 is an exploded view of the present invention;

FIG. 3 is an exploded view of the present invention from another perspective;

Fig. 4 is a schematic circuit diagram of the present invention.

in the figure, 1 is the aircraft nose, 11 is the lug, 2 is the bracing piece, 21 fixed head, 22 is the peg graft pole, 23 is the locating surface, 3 is the rod cover, 31 is the locating surface, 4 is the base, 41 is the spliced eye, 42 is the locating surface, 43 is the cell-phone supporting part, 5 is the roating seat, 51 is the keyway, 52 is the fixed orifices, 6 is the fixed axle, 61 is the spline, 7 is the axle cap, 8 is the interface that charges.

Detailed Description

In this embodiment, referring to fig. 1, fig. 2 and fig. 3, the portable practical fan includes a portable fan head 1, a support rod 2, a base 4, a battery and a circuit module, a rotary seat 55 is fixed on the back of the fan head 1, the rotary seat and the support rod 2 are movably connected to form a structure capable of rotating up and down, and the bottom end of the support rod 2 and the base 4 form a fixing structure capable of being conveniently detached through a plugging manner.

The base 4 is provided with the inserting hole 41, the lower section sleeve of the support rod 2 is provided with the rod sleeve 3 made of the soft rubber sleeve, the friction force is better, the support rod 23 is not easy to fall off and shake after being inserted, and the support rod and the rod sleeve are inserted into the inserting hole 41 together to form a fixed structure with the base 4.

The lower section of the supporting rod 2 is provided with an inserting rod 22, the outer diameter of the inserting rod 22 is smaller than the outer diameter of the main body of the supporting rod 2, and the rod sleeve 3 is sleeved with the inserting rod 22 to form a structure flush with the surface of the main body of the supporting rod 2; the back of the insertion rod 22, the back of the rod sleeve 3 and the back of the insertion hole 41 are respectively provided with a positioning surface 23, 31 and 42 with a plane structure, the positioning surface 31 of the rod sleeve 3 is matched with the positioning surface 23 of the insertion rod 2, the positioning surface 42 of the insertion hole 41 is matched with the positioning surface 31 of the rod sleeve 3, and the positioning surfaces 23, 31 and 42 of the three are sequentially and tightly matched to form a positioning structure of the support rod 2, so that the support rod 2 cannot rotate by itself.

A fixed head 21 is arranged at the top end of the support rod 2, and the rotating seat 5 is arranged on the fixed head 21 through a fixed shaft 6; the key groove 51 is arranged in the rotating seat 5, the spline 61 is arranged on the fixed shaft 6, the spline 61 is embedded into the key groove 51 to form an assembly structure of the rotating seat 5 and the fixed shaft 6, the rotating seat 5 is rotated by an angle from minus 45 degrees below the horizontal line to plus 45 degrees above the horizontal line, and the rotating seat can be positioned at any angle (as can be understood, the technical scheme is the prior art), so that the belly, the chest and the head can be conveniently blown by holding the fan by hands; the two ends of the fixed shaft 6 are respectively provided with a shaft cap, wherein the shaft cap at one end and the fixed shaft 6 are in an integral structure, the shaft cap 7 at the other end is tightly inserted into the fixing hole 52 of the rotating seat 5 through a bolt on the shaft cap, and the outer end surfaces of the shaft caps at the two ends are flush with the rotating seat 5.

The top surface of the front part of the base 4 is provided with a mobile phone supporting part 43 which protrudes upwards, and a mobile phone support structure is formed by matching the mobile phone supporting part 43 with the supporting rod 2, so that a mobile phone can be placed on the mobile phone supporting part 43 and then lean against the supporting rod 2, and the mobile phone can be seen while blowing air.

Two sides of the machine head 1 are respectively provided with a lifting lug 11, the two lifting lugs 11 form a bilateral symmetry structure, and the fan can be hung up by a rope for use, such as being hung on a neck or being hung on a wall.

The battery is rechargeable lithium cell, is equipped with the interface 8 that charges on bracing piece 2.

the charging interface 8 is a TYPE-C interface, a LIGHT TNING interface or a MIRCO-USB interface.

The circuit of the circuit component comprises a fan control chip U1 and a charging management chip U2, wherein the fan control chip U1 and the charging management chip U2 are respectively OXOF11CB (U1) and TP4056 (U2) and are both 8 pins, a charging interface is connected with an input pin of the charging management chip U2, a battery is connected with an output pin of the charging management chip U2, and the fan control chip U1 is connected with the battery; the negative pole of the motor MG1 is connected with a MOS tube Q2 to form a negative pole EN end, the negative pole EN end is connected with a pin 2 of the fan control chip U1, the positive pole of the motor MG1 is connected with a battery through an inductor L1 in one way, the other end is connected with a MOS tube Q1 to form a positive pole NMOS end, and the positive pole NMOS end is connected with a pin 4 of the fan control chip U1; a pin 5 of the fan control chip U1 is connected to a control switch MODE.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the invention, i.e. the present invention is intended to cover all equivalent variations and modifications within the scope of the present invention.

Claims

1. The utility model provides a portable practical fan, including portable fan aircraft nose, bracing piece, base, battery and circuit assembly, its characterized in that: the back of aircraft nose is fixed with a roating seat, and roating seat and bracing piece swing joint form the structure that can rotate from top to bottom, and the bottom of bracing piece forms the fixed knot structure that can conveniently dismantle through the grafting mode with the base.

2. The portable utility fan of claim 1, wherein: the base is provided with an inserting hole, the lower section of the supporting rod is sleeved with a rod sleeve made of a soft rubber sleeve, and the supporting rod and the rod sleeve are inserted into the inserting hole together to form a fixed structure with the base.

3. The portable utility fan of claim 2, wherein: the lower section of the supporting rod is provided with an inserting rod, the outer diameter of the inserting rod is smaller than the outer diameter of the main body of the supporting rod, and the rod sleeve is sleeved with the inserting rod to form a structure flush with the surface of the main body of the supporting rod; the back of the insertion rod, the back of the rod sleeve and the back of the insertion hole are respectively provided with a positioning surface with a planar structure, the positioning surface of the rod sleeve is matched with the positioning surface of the insertion rod, the positioning surface of the insertion hole is matched with the positioning surface of the rod sleeve, and the positioning surfaces of the insertion rod, the rod sleeve and the rod sleeve are sequentially tightly matched to form a positioning structure of the support rod.

4. The portable utility fan of claim 1, wherein: the top end of the supporting rod is provided with a fixed head, and the rotating seat is arranged on the fixed head through a fixed shaft; a key groove is formed in the rotating seat, a spline is formed on the fixed shaft, the spline is embedded into the key groove to form an assembly structure of the rotating seat and the fixed shaft, and the rotating angle formed by the rotating seat is from-45 degrees below a horizontal line to +45 degrees above the horizontal line; the two ends of the fixed shaft are respectively provided with a shaft cap, the shaft cap at one end and the fixed shaft are of an integrated structure, the shaft cap at the other end is tightly inserted on the rotating seat through a bolt on the shaft cap, and the outer end faces of the shaft caps at the two ends are flush with the rotating seat.

5. The portable utility fan of claim 1, wherein: a mobile phone supporting part protruding upwards is arranged on the top surface of the front part of the base, and a mobile phone support structure is formed by matching the mobile phone supporting part and the supporting rod.

6. The portable utility fan of claim 1, wherein: two sides of the machine head are respectively provided with a lifting lug, and the two lifting lugs form a bilateral symmetry structure.

7. The portable utility fan of claim 1, wherein: the battery is rechargeable lithium cell, is equipped with the interface that charges on the bracing piece.

8. The portable utility fan of claim 7, wherein: the charging interface is a TYPE-C interface, a LIGHT TNING interface or a MIRCO-USB interface.

9. A portable utility fan in accordance with claim 8, wherein: the circuit of the circuit component comprises a fan control chip U1 and a charging management chip U2, the models of the fan control chip U1 and the charging management chip U2 are OXOF11CB and TP4056 respectively, a charging interface is connected with an input pin of the charging management chip U2, a battery is connected with an output pin of the charging management chip U2, and the fan control chip U1 is connected with the battery; the negative pole of the motor MG1 is connected with a MOS tube Q2 to form a negative pole EN end, the negative pole EN end is connected with a pin 2 of the fan control chip U1, the positive pole of the motor MG1 is connected with a battery through an inductor L1 in one way, the other end is connected with a MOS tube Q1 to form a positive pole NMOS end, and the positive pole NMOS end is connected with a pin 4 of the fan control chip U1; a pin 5 of the fan control chip U1 is connected to a control switch MODE.

10. A portable utility fan in accordance with claim 9, wherein: a charging process indicator light red light-emitting diode D5 and a full indicator light green light-emitting diode D4 are also arranged between the charging management chip U2 and the charging interface; and a background lamp consisting of a triode and an LED is connected out of a pin 7 of the fan control chip U1 and is arranged on the machine head.