WO2011066749A1

WO2011066749A1 - Double fan structure

Info

Publication number: WO2011066749A1
Application number: PCT/CN2010/074561
Authority: WO
Inventors: 陈耀祖
Original assignee: Chan Yewchoh
Priority date: 2009-12-02
Filing date: 2010-06-26
Publication date: 2011-06-09
Also published as: CN201574957U

Abstract

A double fan structure includes two fan disks (103) composed of an air screen face case (1031), an air screen bottom case (1032) and a motor (1033) and an impeller (1034) provided therebetween, a plate-shaped outer case formed by locking a front case (101) and a back case (102), and a top cover (104) provided on the top of the outer case and buckled with it. The outer case is provided with two circular through holes, in which, the fan disks (103) are respectively sleeved. A shaft is respectively protruded on up-and-down or left-and-right symmetrical positions of the outer circumference of the fan disks (103), and the shaft is nested in the shaft hole at the corresponding position of the inner wall of the circular through hole, therein, one fan disk (103) is connected with the outer case rotatably in up-and-down direction, and the other is connected with the outer case rotatably in left-and-right direction. A circuit board (105) is held in the cavity formed between the upper end of the outer case and the top cover (104), a power supply unit is held in the cavity in the lower end of the outer case, and two fan disks (103) are electrically connected with the circuit board (105). The double fan structure can improve blowing effect, and is simple in structure and easy to use.

Description

Double fan structure

Technical field

The invention relates to a dual fan structure.

Background technique

The double-fan structure is widely used in the range hood, air conditioner and electric motor. The desktop or vertical fan used in daily life mostly adopts a wind net shell and a wind net bottom shell installed in the wind. The fan structure of the fan disk composed of the mesh casing and the wind turbine and the fan blade, and the fan structure is mostly powered by an external power source, and the use place is limited.

technical problem

The object of the present invention is to overcome the deficiencies in the prior art described above, and to provide a desktop dual fan structure having a dual fan disk, effective air supply in different directions, three power sources, and convenient carrying.

Technical solution

The object of the present invention can be achieved by the following measures:

The double fan structure comprises: a fan disk composed of a wind net face shell, a wind net bottom shell, a motor and a fan blade installed between the wind net surface shell and the wind net bottom shell, and the special feature is that The utility model further comprises a flat-shaped outer casing which is locked by the front shell and the rear shell, and a top cover which is arranged at the top end of the outer casing and is engaged with the outer casing, and the outer casing is provided with two circular through holes, the two circles A fan disk is respectively disposed in the through hole, and the fan disk is respectively protruded from the outer circumferential surface of the outer circumferential surface or the left and right symmetrical positions, and the rotating shaft is nested in the shaft hole corresponding to the inner wall of the circular through hole of the outer casing. One of the fan disks is rotatably connected to the outer casing, and the other fan disk is rotatably connected to the outer casing; the cavity formed by the upper end of the outer casing and the top cover is provided with a circuit board; and the cavity at the lower end of the outer casing is provided with a power supply device. Both fan disks are electrically connected to the circuit board.

The object of the invention can also be achieved by the following measures:

The power supply device includes a rechargeable battery, and a rechargeable battery case is disposed at a bottom of the casing, and the rechargeable battery is installed in the rechargeable battery case; and the rechargeable battery case is provided with a charging battery and used for charging the rechargeable battery. a battery door enclosing the rechargeable battery; the circuit board is electrically connected to the rechargeable battery and the two fan disk motors to form a closed circuit; the bottom end of the rear case is provided with a The interface between the charging board and the external power supply.

The power supply device further includes a plurality of dry batteries, and the inner side of the lower end cavity of the outer casing is respectively provided with a semi-closed cylindrical hole-shaped dry battery box with a bottom opening, and the two dry battery boxes are provided with battery elastic sheets at the bottom of the hole; the dry battery is installed in two In the dry battery box, the circuit board is electrically connected to the dry battery and the two fan disk motors in the two dry battery cases.

The lower end of the rear case extends vertically outward so that the rear case forms an L-shaped structure to support the fan.

The two fan trays are arranged up and down within the outer casing.

The two fan trays are arranged side by side in the outer casing.

a frame-shaped handrail for carrying a hand is arranged outside the upper end of the rear casing, and the handrail is composed of a cross bar and two legs extending perpendicularly at two ends of the cross bar, the two legs extending vertically into the rear casing and corresponding to The rear case is telescopically connected so that the handrail can be folded until the crossbar fits snugly against the back shell surface.

A touch type power switch button, a time button, and a wind speed button each connected to the circuit board are disposed on an outer surface of the top cover.

The touch power switch button, the time button, and the wind speed button are respectively connected with a speaker for emitting a prompt sound, and the speaker is placed in a cavity formed by the upper end of the outer casing and the top cover.

Beneficial effect

Compared with the prior art, the present invention has the following advantages: by providing two fan discs on the fan casing, and one of the fan discs can rotate up and down with respect to the outer casing through the shaft shaft disposed on the inner wall of the circular hole of the outer casing through the rotating shaft disposed thereon The other fan disk can be rotated to the left and right of the outer casing by the shaft disposed on the inner wall of the circular hole of the outer casing, thereby improving the fan air supply effect, and the fan is provided with a rechargeable battery and a dry battery for independent power supply. It can be directly used by external power supply, and it can be easily carried without being restricted by place. It has simple structure, convenient and practical.

DRAWINGS

Figure 1 is a front view of the present invention.

Figure 2 is a plan view of the present invention.

Figure 3 is a left side view of the present invention.

Figure 4 is a right side view of the present invention.

Figure 5 is a rear elevational view of the present invention.

Figure 6 is a perspective view of the present invention.

Figure 7 is an exploded perspective view of the fan disk of the present invention.

Figure 8 is an exploded perspective view of the outer casing of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiments of the invention

The invention will be further described in detail below with reference to the accompanying drawings:

As shown in FIG. 1 , FIG. 2 and FIG. 3 , the dual fan structure provided by the present invention comprises: a wind net face shell 1031 , a wind net bottom shell 1032 , a wind net surface shell 1031 , and a wind net bottom shell . A fan disc 103 composed of a motor 1033 and a blade 1034 between 1032, and a motor cover 1035 is disposed on the motor 1033. The dual fan structure further includes a flat shell and a setting formed by the front shell 101 and the rear shell 102. A top cover 104 at the top end of the outer casing and engaging the outer casing, the lower end of the rear casing 102 extends vertically outwardly so that the rear casing 102 forms an L-shaped structure to support the fan, so that the fan can be supported by the bottom of the outer casing to stand on a horizontal surface. The housing is provided with two circular through holes, and the fan trays 103 are respectively sleeved on the outer circumferential surface of the outer circumferential surface or the left and right symmetrical positions respectively. The fan disk 103 is nested in the shaft hole corresponding to the inner wall of the circular through hole of the outer casing, wherein the fan disk 103 is rotatably connected to the outer casing, and the other fan disk 103 is rotatably connected to the outer casing. A silicone ring 1036 is disposed at a joint between the two fan trays 103 and the outer casing; a circuit board 105 is disposed in a space formed by the upper end of the outer casing and the top cover 104; a power supply device is disposed at a lower end of the outer casing, and both fan disks 103 pass through a motor line on the motor 1033. The tablet 1037 is electrically connected to the circuit board 105.

In this embodiment, the power supply device includes a rechargeable battery 106, and a rechargeable battery case 107 is disposed at the bottom of the housing. The rechargeable battery 106 is disposed in the rechargeable battery case 107. The rechargeable battery case 107 is connected to the rechargeable battery 106 and used for The charging battery 106 is charged with a charging plate (not shown); the bottom of the charging battery case 107 is provided with a battery door 108 enclosing the rechargeable battery 106, and the battery door 108 is fixed to the outer casing by the battery door pressing piece 1081; the circuit board 105 They are electrically connected to the rechargeable battery 106 and the two fan disk motors 1033 to form a closed circuit. The bottom end of the rear case 102 is provided with an interface for connecting a charging board (not shown) to an external power source. The interface of the bottom end of the rear case 102 is connected to an external power source, and the rechargeable battery 106 can be charged by a charging board (not shown), or the two fan motors 1033 can be directly powered by an external power source.

In a further embodiment, the power supply device further includes a plurality of dry cells, and a semi-closed cylindrical hole-shaped dry battery case 109 having a bottom opening is respectively disposed at two inner sides of the lower end of the outer casing, and the two dry battery cases 109 are provided with a battery elastic piece 1091 at the bottom of the hole; Installed in the two dry battery compartments 109, the circuit board 105 is electrically connected to the dry batteries in the two dry battery compartments 109 and the two fan trays 103 motor 1033 to form a closed loop.

In the present embodiment, the two fan trays 103 are arranged up and down inside the casing. The fan disk 103 at the upper end of the outer casing protrudes from the outer circumferential surface of the outer casing with a rotating shaft, and the rotating shaft is nested in the shaft hole on the inner wall of the circular through hole of the outer casing, so that the upper end fan disk 103 can rotate left and right relative to the outer casing. The fan disk 103 at the lower end of the outer casing protrudes from the outer circumferential surface of the outer casing with a rotating shaft, and the rotating shaft is nested in the corresponding axial hole on the inner wall of the circular through hole of the outer casing, so that the lower fan disk 103 can be up and down relative to the outer casing. Rotate. In other embodiments, the two fan trays can also be arranged left and right within the housing.

In this embodiment, a touch power switch button, a time button, and a wind speed button are disposed on the outer surface of the top cover 104, and the switch button, the time button, and the wind speed button are all connected to the circuit board 105. The touch power switch button, the time button, and the wind speed button are respectively connected with a speaker for not emitting a sound (not shown), and the speaker is placed in a cavity formed by the upper end of the outer casing and the top cover 104, and is pressed. When each button is pressed, a beep will sound. According to the needs of use, the wind speed button of the two fan trays 103 can be adjusted to select the high-speed wind speed or the low-speed wind speed or the stop rotation function, and the time setting can also be performed by adjusting the time button. The time control function of the product can be set to normally open, 2 hours. Three gears in 4 hours.

In a further embodiment, in order to facilitate carrying or hanging the fan, a frame-shaped handrail 110 for carrying is provided on the upper end of the rear case 102, and the hand-held frame 110 is extended by a cross bar and two ends of the cross bar. The legs are formed, and the two legs extend perpendicularly into the casing of the rear casing 102 and are telescopically connected to the rear casing 102 through the handle assembly 1101, the hand buckle 1102 and the spring 1103, so that the handrail 110 can be gathered to the crossbar to be in close contact with the rear casing 102. Shell surface. When the fan needs to be carried, only the outward force of the crossbar is applied, so that the two legs of the crossbar protrude out of the rear casing 102, and the purpose can be achieved.

The working principle of this embodiment:

The product of this embodiment uses touch switch control, respectively, ON/OFF, FAN1, FAN2, TIMER 4 function switch buttons, ON/OFF button controls the power switch, FAN1 and FAN2 buttons control the wind speed of the two fan trays 103, and the TIMER button limits the time. The two fan discs 103 respectively have a DC12V motor 1033 built therein to provide a blowing function, and the operating current is less than 300 mA. This embodiment has two speeds of wind speed, which are low (10V) and high (12V). The time setting control functions are three positions: normally open, 2 hours, and 4 hours. In the embodiment, the rechargeable battery 106 adopts a specification model with an input power of 100 to 240 V, an output voltage of 12 V, and an output current of 0.43 A. The dry battery is a C-type dry battery, and the number is eight, and the two dry battery boxes 109 are respectively loaded. 4. The circuit board (PCB) is provided with battery reverse protection to prevent the battery from being short-circuited and burned out of the PCB after the battery is reversed.

In this embodiment, an audible prompt function is provided. When the ON/OFF button is touched, there is a “drop” sound, the fan enters the working state, and the second time touches the ON/OFF button, and there is a “drop” sound, and the fan stops working. This cycle works to ensure that the power is turned off and the power is turned off. The FAN1 key controls the rotation of the first fan disk blade 1034. When the fan enters the working state, touch FAN1, there is a “drop” sound, the first fan disk blade 1034 rotates at a high level, the second touch, there is a “drop” sound, and the first fan disk blade 1034 rotates in a low gear. The third touch, there is a "drop" sound, the first fan disk blade 1034 stops rotating, and thus cycles. The FAN2 key controls the rotation of the second fan disk blade 1034, and its working principle is the same as that of the first fan disk. The TIMER button is used to control the fan working time function. When the fan enters the working state, the fan defaults to the normally open function. The first time the TIMER button is touched, there is a “drop” sound for 2 hours. The second time touches the TIMER button. "One tone sounds, it is turned on for 4 hours; the third time touches the TIMER button, there is a "drop" sound, which is a normally open function;

In this embodiment, three power supply modes are adopted. When the fan is connected to the rechargeable battery 106, the power switch button ON state is in an active state, and the fan is only powered by the rechargeable battery 106. When the fan is not connected to the rechargeable battery 106, the power switch button is in the ON state, and the fan is only powered by the dry battery. It is also possible to power the fan directly from an external power source.

The above are only the preferred embodiments of the present invention, and all changes and modifications made within the scope of the claims of the present invention should be construed as the scope of the claims.

Industrial applicability

Sequence table free content

Claims

The utility model relates to a double fan structure, comprising: a fan disk composed of a wind net face shell, a wind net bottom shell, a motor and a fan blade installed between the wind net surface shell and the wind net bottom shell, characterized in that it further comprises a flat-shaped outer casing locked by a front shell and a rear shell, and a top cover disposed at a top end of the outer casing and engaging with the outer casing, the outer casing is provided with two circular through holes, the two circular through holes A fan disk is respectively disposed in the hole, and the fan disk has a rotating shaft protruding from the upper and lower sides or the left and right symmetrical positions of the fan disk, and the rotating shaft is nested in a shaft hole corresponding to the inner wall of the circular through hole of the outer casing, wherein A fan disk can be vertically connected to the outer casing, and the other fan disk can be rotated and connected to the outer casing; the cavity formed by the upper end of the outer casing and the top cover is provided with a circuit board; the lower end of the outer casing is provided with a power supply device, and the two fans The disks are electrically connected to the circuit board.
The dual fan structure according to claim 1, wherein the power supply device comprises a rechargeable battery, and a rechargeable battery case is disposed at a bottom of the outer casing, wherein the rechargeable battery is installed in the rechargeable battery case; a charging board connected to the rechargeable battery and used for charging the rechargeable battery; a battery door enclosing the rechargeable battery is disposed outside the rechargeable battery case at the bottom of the housing; the circuit board is electrically connected to the rechargeable battery and the two fan disk motors respectively; The bottom end of the rear case is provided with an interface for connecting the charging board to an external power source.
The dual fan structure according to claim 2, wherein the power supply device further comprises a plurality of dry cells, and the inner side of the lower end cavity of the outer casing is respectively provided with a semi-closed cylindrical hole-shaped dry battery case with a bottom opening, and the two dry battery cases are The bottom of the hole is provided with a battery spring; the dry battery is installed in the two dry battery boxes, and the circuit board is electrically connected to the dry battery and the two fan disk motors in the two dry battery boxes.
The dual fan structure according to claim 3, wherein the lower end of the rear case extends vertically outwards to form the rear case to form an L-shaped structure to support the fan.
The dual fan structure according to claim 4, wherein the two fan trays are arranged up and down in the outer casing.
The dual fan structure according to claim 4, wherein the two fan trays are arranged left and right in the outer casing.
The double fan structure according to any one of claims 1 to 6, wherein a frame-shaped handrail for carrying is provided outside the upper end of the rear case, and the handrail is provided by a cross bar and two ends of the cross bar. The two legs are vertically extending, and the two legs extend vertically into the rear casing and are retractably connected to the rear casing, so that the handrail can be gathered to the crossbar to abut the rear casing surface.
The dual fan structure according to claim 7, wherein a touch power switch button, a time button, and a wind speed button each connected to the circuit board are disposed on an outer surface of the top cover.
The dual fan structure according to claim 8, wherein the touch power switch button, the time button and the wind speed button are respectively connected with a speaker for emitting a prompt sound, and the speaker is placed on the upper end of the outer casing and the top cover. Inside the cavity.