JP5851566B2 - Fan - Google Patents

Description

  The present invention relates to a battery-type electric fan.

An electric fan using a rechargeable battery (DC power supply) as a power source does not require an AC 100V power supply for general households, and can be carried and used in various places such as a construction site. In addition, it can be used repeatedly by removing the battery and charging with a separately prepared charger. For example, if a rechargeable battery pack used as a battery for an electric tool such as an electric drill or screw tightener can be used as a power source at a construction site, etc., this type of battery pack can be used efficiently with a fan and an electric tool. be able to.
The following patent document discloses a technique related to an electric fan using a rechargeable battery pack as a power source. According to the disclosed technology, since the battery pack having a relatively large weight is mounted on the lower end portion of the support leg to function as a pedestal, the electric fan can be stably installed.

Japanese Unexamined Patent Publication No. 3-175598

However, since the above-mentioned conventional electric fan does not have a so-called swing function, once it is installed, its blowing direction is fixed. For this reason, when changing a ventilation direction, it was necessary to interrupt work and to change the installation direction of the said fan, and it was necessary to improve the usability in this respect.
The present invention has been made in view of the conventional problems relating to a fan available rechargeable battery pack (10) as a power source (rechargeable fan), so that it blows air toward more extensive than traditional The purpose is to further improve its usability.

The above problems are solved by the following invention.
The invention according to claim 1 is a blade, a guard portion that covers the periphery of the blade, an electric motor that is arranged behind the blade and that rotates the blade, and for supplying electric power to the electric motor A battery mounting part for mounting the rechargeable battery pack, and a pair of left and right leg parts that support the guard part and the battery mounting part, and the pair of left and right leg parts are more than the blades. It is coupled to each other via a leg base at the rear, and the leg base is coupled to the battery mounting portion, and the guard portion supports the tilting posture between a forward tilting posture and a rearward tilting posture. Thus, the electric fan is configured to be capable of changing the air blowing direction diagonally downward or diagonally upward .
According to the first aspect of the present invention, the direction of the air blow can be changed by rotating the guard portion to the forward tilted posture or the backward tilted posture, so that the usability of the electric fan can be improved.
Further, according to the first aspect of the invention, it is possible to use the bus Tteripakku as a power source, in construction sites, etc., without having to prepare an AC power source or the like can be used the fan. The electric fan can be used mainly for maintaining a good working environment by generating a cool breeze in a hot working environment or blowing off surrounding dust and the like.

It is the whole fan front view concerning this embodiment. It is (II) arrow view of FIG. 1, Comprising: It is a right view of an electric fan. It is (III) arrow view of FIG. 1, Comprising: It is a left view of an electric fan. It is (IV) arrow directional view of FIG. 3, Comprising: It is the whole fan rear view. It is (V) arrow directional view of FIG. 1, Comprising: It is a top view of an electric fan. It is (VI) arrow view of FIG. 1, Comprising: It is a bottom view of an electric fan. FIG. 5 is a sectional view taken along the line (VII)-(VII) in FIG. 4 and is a plan view of the swing mechanism.

Next, an embodiment of the present invention will be described with reference to FIGS. As shown in the figure, the electric fan 1 of this embodiment includes a main body 10 and a pedestal 20. The main body 10 includes an electric motor 11 (DC motor), a three-blade blade (fan) 12 that is rotated by the electric motor 11, a guard 13 that covers the periphery of the blade 12, and a guard 13. A support frame portion 14 for supporting the main body portion 10 on the pedestal portion 20 is provided. The pedestal portion 20 has a function of installing (self-standing) the main body portion 10 on the installation surface F, and includes a pedestal main body 21 and a pair of left and right leg portions 22 and 22.
The guard part 13 of the main body part 10 has a front / rear two-part structure in which a circular saddle-shaped front guard 13a and rear guard 13b are abutted against each other at a joint surface J2. Each of the front guard 13a and the rear guard 13b has a mesh structure in which a plurality of circular frames in which steel wires are arranged concentrically and a plurality of radiation frames arranged in the radial direction are coupled.
The electric motor 11 is disposed at the center of the back surface of the guard portion 13 (the center of the rear guard 13b). A handle portion 15 for carrying is provided on the upper portion of the electric motor 11. The electric motor 11 is activated using a battery pack 23 described later as a power source.
The left and right side portions of the guard portion 13 are supported on the support frame portion 14 via tilting support shaft portions 14a and 14a that are coaxial with each other. The guard portion 13 is supported so as to be tiltable within a certain angle range in the front-rear direction with the left and right tilt support shaft portions 14a and 14a as the center. A positive stop mechanism using a leaf spring is incorporated in the left and right tilting support shaft portions 14a and 14a. By this positive stop mechanism, the forward tilting posture or the backward tilting posture of the guard portion 13 and thus the main body portion 10 can be held at an arbitrary tilt angle. As shown in FIG. 4, the electric motor 11 is disposed in the center between the left and right tilt support shaft portions 14 a and 14 a on the front and rear tilt axis J <b> 1 in the rear view.
The support frame portion 14 is a frame body having a semicircular arc shape along a range of the lower half of the guard portion 13, and tilting support shaft portions 14 a and 14 a are provided at the left and right upper end portions thereof. As shown in FIG. 4, the main body 10 is supported on the upper surface of the pedestal main body 21 via a main body support shaft 14 b provided at the center (lower end) of the support frame 14. An axis line (a swing axis line J0 described later) of the main body support shaft part 14b is located on the coupling surface J2 of the guard part 13. For this reason, the main-body part 10 can be swung (rotated) more compactly (within a narrower space).
The main body support shaft portion 14 b is coupled to a swing mechanism 30 provided in the pedestal main body 21. The main body 10 is supported by the swing mechanism 30 so as to be rotatable (swingable) within a range of a certain angle from side to side. The swing mechanism 30 will be described later.

The pedestal main body 21 of the pedestal portion 20 has a rectangular box shape, and mainly includes the above-described swing mechanism 30, power supply circuit portion, and operation portion. A battery pack 23 is mounted on the lower surface side of the pedestal main body 21. The battery pack 23 is mounted in a recess 21 a for mounting the battery pack provided on the lower surface on the front side of the base body 21. The battery pack 23 is mounted so as not to protrude from the battery mounting recess 21a. The battery pack 23 is a slide-mounted lithium ion battery that is used as a power source for a battery-type power tool such as an electric screw tightener or a grinder, and the battery pack removed from the power tool can be used as it is.
The battery pack 23 is attached and detached by sliding it back and forth with respect to the battery mounting recess 21a. As shown in FIG. 1, a removal button 23 a is provided on the front surface of the battery pack 23. By pushing down the detach button 23a downward in FIG. 1 with a fingertip, the battery pack 23 can be slid forward (front side) in FIG. 1 and removed from the battery mounting recess 21a. The removed battery pack 23 can be repeatedly used as a power source of the electric fan 1 or a power source of another electric tool by charging with a separately prepared charger. The electric power of the battery pack 23 is supplied to the electric motor 11 or a swing motor 31 described later through a power supply circuit (not shown).
When the battery pack 23 is mounted in the battery mounting recess 21a, the mounting site is set so that the center of gravity thereof coincides with the swing axis J0. For this reason, the electric fan 1 can be installed in a stable state in a state where the battery pack 23 that is a relatively heavy weight is attached.

The pedestal main body 21 is supported at a position raised from the installation surface F by a pair of left and right legs 22, 22. An operation space S is provided between the base body 21 and the installation surface F by the legs 22 and 22 so that the user can easily attach and remove the battery pack 23 by inserting his / her hand.
The left and right leg portions 22, 22 are provided so as to protrude from the left and right side portions of the pedestal main body 21 to the side in a direction orthogonal to the vertical plane including the mounting direction of the battery pack 23.
The left and right leg portions 22 and 22 are each formed by bending one steel pipe into a rectangular frame shape, and are provided symmetrically. Hereinafter, the left leg 22 will be described. In the figure, the same leg is also attached to the right leg 22. The left leg 22 extends from the left side of the pedestal main body 21 to the upper side 22a, the upper front / rear 22b extending forward from the left end of the upper side 22a, and the front of the upper front 22b. It has a vertical part 22c, a lower front and rear part 22d extending rearward from the lower part of the vertical part 22c, and a lower side part 22e extending rightward from the rear part of the lower front and rear part 22d. The lower side portion 22e is coupled to a leg base 21b provided at the rear portion of the base body 21. The left and right leg portions 22 are connected to each other by the leg base 21b.
The respective portions 22a, 22b, 22c, 22d, and 22e of the left and right leg portions 22 and 22 are continuously connected to each other through smoothly curved corner portions. Resin-made leg guards 25 and 26 are attached to the corners of the vertical part 22c and the lower front and rear part 22d and the corners between the lower front and rear part 22d and the lower side part 22e, respectively. As shown, the leg guards 25 and 26 are grounded to the installation surface F at the left and right leg parts 21 and 21, respectively. The left and right leg portions 22, 22 are grounded to the installation surface F via the resin leg guards 25, 26, thereby preventing the installation surface F from being damaged.

Next, as described above, the swing mechanism 30 is housed inside the base body 21. The swing mechanism 30 has a function of rotating (swinging) the main body 10 left and right within a certain angle range. In this embodiment, the swinging is performed electrically (automatically). Yes.
As shown in FIGS. 4 and 7, the swing mechanism 30 of the present embodiment is an electric type using a swing motor 31 as a drive source. An eccentric disc 32 is attached to the output shaft 31 a of the swing motor 31. An eccentric pin 33 is attached to the peripheral edge of the upper surface of the eccentric disc 32 so as to protrude upward. On the other hand, an operating arm 34 is attached to the main body support shaft portion 14 b of the main body portion 10 protruding from the upper surface of the base main body 21. The operating arm 34 is fixed in a state of projecting radially from the main body support shaft portion 14b. The operating arm 34 is provided with an engagement hole 34a having a long slot shape that is long in the longitudinal direction. The eccentric pin 33 is inserted into the engagement hole 34a from below.
For this reason, when the swing motor 31 is activated, the eccentric pin 33 revolves around the output axis of the swing motor 31 as the eccentric disk 32 rotates. In the revolving motion of the eccentric pin 33, the longitudinal direction component of the engaging hole 34 a is absorbed by the eccentric pin 33 moving along the engaging hole 34 a, and other displacement components are swung by the operating arm 34. It is transmitted as movement. Due to the revolving motion of the eccentric pin 32, the operating arm 34 reciprocates (rotates) around the swing axis J0 within a certain angle range, and thereby the main body 10 rotates (swings) to the left and right.

As shown in FIG. 1, an operation panel 24 that is operated by a user is provided on the upper front portion of the base body 21. In the center of the operation panel 24, a power button 24a is arranged. When the power button 24a is pressed, the electric motor 11 of the main body 10 is activated and the fan 12 is rotated. When the fan 12 rotates, air is generated from the front side. When the power button 24a is pressed in this on state, the electric motor 11 is stopped and the rotation of the fan 12 is stopped.
An air volume switching button 24b is arranged on the right side of the power button 24a. Depending on the number of times the air volume switching button 24b is pressed, the intensity of the air volume is switched between three levels. The switched air volume can be known from the number of lighting of the three air volume display lamps 24c to 24c arranged above the air volume button 24b. The air volume indicator lamps 24c are set to “weak” when one is lit, “medium” when two are lit, and “strong” when three are lit.
A swing button 24d is disposed above the power button 24a. When the swing button 24d is pressed, the swing motor 31 is activated and the main body 10 swings left and right within a certain angle range. As the main body 10 swings left and right, the air blowing range expands left and right. When the swing button 24d is pressed again in this swing state, the swing motor 31 stops and the swing operation of the main body 10 is stopped.
An operation stop timer button 24e is arranged on the left side of the power button 24a. Depending on the number of times the timer button 24e is pressed, the time until the operation is stopped can be arbitrarily selected and switched. The setting state of the off timer is notified by three timer lamps 24f to 24f arranged side by side on the upper side. The timer lamp 24f is set to "1 hour" when one is lit, "2 hours" when two are lit, and "4 hours" when three are lit. In the continuous operation state in which the off timer is not set, all three timer lamps 24f to 24f are turned off. The timer setting state set by the timer button 24e is also canceled by stopping the main body 10 by pressing the power button 24a.

  Next, as shown in FIG. 2, an adapter connection portion 27 for connecting an AC power adapter (not shown) for converting AC 100 V to DC 15 V is provided on the right side of the pedestal main body 21. The electric fan 1 is compatible with both a DC power supply (14.4V or 18V) supplied from the battery pack 23 and an AC power supply (AC100V) converted into DC15V by an AC power adapter connected to the adapter connection unit 27. (For both charge and exchange). When a DC power adapter is connected to the adapter connection unit 27, power supply from the battery pack 23 is automatically cut off, and power is supplied via the adapter connection unit 27. Conversely, when the AC power adapter is removed from the adapter connection unit 27, the power supply is automatically switched from the battery pack 23.

According to the electric fan 1 of the present embodiment configured as described above, the main body portion 10 is provided so as to be able to swing left and right with respect to the pedestal portion 20, so that the user grips the handle 15, etc. The air blowing direction of the main body 10 can be changed without taking the trouble of floating the electric fan 1 and changing the installation direction. In this respect, the usability of the electric fan 1 can be improved.
Moreover, since the swing mechanism 30 of the present embodiment is an electric type (automatic type) using the swing motor 31 as a drive source, if the swing button 24a is turned on, the user will perform any operation thereafter. The main body 10 can be automatically reciprocated from side to side within a certain angle range, thereby realizing a wider range of air blowing than a conventional wind direction fixed fan without a swing mechanism. it can.
In the case of the present embodiment, the main body 10 can be tilted back and forth around the front / rear tilt support shaft portion 14a (front / rear tilt support shaft J1). The air can be blown over a wider range. The forward tilting posture or the backward tilting posture of the main body portion 10 can be held at an arbitrary tilt angle by a positive stop mechanism incorporated in the tilting support shaft portion 14a.
Further, since the swing axis line J0 is located on the coupling surface J2 of the guard portion 13, the main body portion 10 can be rotated most compactly, so that the electric fan can be used even in a narrow space. 1 can be used in a swung state.
Further, since the center of gravity of the relatively heavy battery pack 23 coincides with the swing axis J0, the swinging operation of the main body 10 can be performed in a stable installation state without generating a moment or vibration in the falling direction. It can be carried out.
Further, the left and right leg portions 22 and 22 are arranged in a state of projecting laterally from the left and right side portions of the pedestal main body 21 and projecting in a direction perpendicular to the vertical plane including the mounting direction of the battery pack 23. Therefore, good operability of the operation panel 24 is ensured without obstructing the attachment and removal of the battery pack 23.
In addition, since the handle 15 is provided on the back side of the guard part 13 and on the electric motor 11, the electric fan 1 is made compact in the height direction as compared with the case provided on the upper part of the guard part 13. can do. In addition, since the main body 10 can tilt back and forth about the front / rear tilt axis J1, when the electric fan 1 is lifted by holding the handle 15 provided behind and above the front / rear tilt axis J1, In particular, the main body 10 is tilted forward with respect to the pedestal 20 and the center of gravity of the electric fan 1 is displaced on the vertical line passing through the part where the handle 15 is gripped. It can be easily carried with the posture.

Furthermore, according to the electric fan 1 of the present embodiment, the battery pack 23 as a power source is mounted on the battery mounting recess 21a provided on the lower surface on the front side of the pedestal main body 21, and the sliding direction for mounting and removing the battery pack 23 is provided. Is in a direction substantially along the installation surface F. In addition, an operation space S for the user to insert his / her hand is provided between the pedestal main body 21 and the installation surface F. For this reason, the battery pack 23 can be easily removed from the battery mounting recess 21a and can be easily mounted in the battery mounting recess 21a without having to lift the electric fan 1 by holding the handle portion 15 or the like. In this respect, the operability and usability of the electric fan 1 can be improved.
Further, the battery pack 23 can be mounted by sliding it with respect to the battery mounting recess 21a of the pedestal main body 21 with the mounting portion (terminal portion, slide rail portion) of the battery pack 23 facing upward and the battery pack 23 placed on the palm. Therefore, it is easy to handle when the battery pack 23 is mounted, and can be mounted quickly and easily.
Further, the electric fan 1 can be used by switching between DC 14.4V (or DC 18V) supplied by the battery pack 23 and AC 100V converted to DC 15V through the AC power adapter connected to the adapter connection unit 27. Therefore, the usability can be further enhanced in various places such as when the electric fan 1 is used indoors or outdoors.

Various modifications can be made to the embodiment described above. For example, although the case where the swing mechanism 30 of the main body unit 10 is an electric type (automatic swing type) using the swing motor 31 as a drive source is illustrated, it can be simply rotated to the left and right via the main body support shaft part. You may change to the manual swing type. Even if it is the manual swing type which concerns, the ventilation direction of a main-body part can be changed with the state which installed the said fan, and usability can be improved rather than the conventional fixed type.
Moreover, you may abbreviate | omit the front-back tilt function of the main-body part 10. FIG. When the forward / backward tilting function is omitted, the support frame portion 14 may be omitted and the main body support shaft portion for swinging may be directly provided at the lower portion of the guard portion 13.
Furthermore, although the structure which supports the main-body part 10 from the downward direction via the support frame part 14 was illustrated, it is good also as a structure supported so that a main-body part may be suspended from a portal-shaped support frame part.
Further, the battery pack 23 may be mounted on the upper surface or the side portion of the base body 21 as shown in the illustrated example, or on the back side of the main body portion 10. Also good. As illustrated, the battery pack may have a configuration using other mounting forms such as a plug-in type in addition to the slide mounting type.

F ... Installation surface 1 ... Fan 10 ... Main body 11 ... Electric motor 12 ... Blade (fan)
DESCRIPTION OF SYMBOLS 13 ... Guard part, 13a ... Front guard, 13b ... Back guard 14 ... Support frame part, 14a ... Tilt support shaft part, 14b ... Main body support shaft part 15 ... Handle 20 ... Base part 21 ... Base body, 21a ... Battery mounting recessed part 22 ... Leg part 22a ... Upper side part, 22b ... Upper front and rear part, 22c ... Vertical part, 22d ... Lower front and rear part 22e ... Lower side part 23 ... Battery pack, 23a ... Removal button 24 ... Operation panel 24a ... Power button, 24b ... Air volume switching button, 24c ... Air volume display lamp 24d ... Swing button, 24e ... Timer button, 24f ... Timer lamp 25, 26 ... Leg guard 27 ... Adapter connection 30 ... Swing mechanism 31 ... Swing motor 32 ... Eccentric disc 33 ... Eccentric pin 34 ... Actuating arm 34a ... Engagement hole J0 ... Swing axis J1 ... Front and rear tilt axis J2 ... Coupling surface S ... Operation space

Claims (6)

Feathers,
A guard covering the periphery of the blade;
An electric motor disposed behind the blades for rotating the blades;
A battery mounting portion for mounting a rechargeable battery pack for supplying power to the electric motor;
A pair of left and right legs that support the guard part and the battery mounting part;
The pair of left and right legs are coupled to each other via a leg base at the rear of the blade, and the leg base is coupled to the battery mounting portion .
An electric fan configured such that the guard portion is supported so as to be tiltable between a forward leaning posture and a backward leaning posture, and the air blowing direction can be changed obliquely downward or obliquely upward . The electric fan according to claim 1, wherein the battery pack is mounted by sliding the battery pack with respect to the battery mounting portion. 3. The electric fan according to claim 1, wherein each of the pair of left and right legs includes a front leg guard and a rear leg guard. The electric fan according to any one of claims 1 to 3, wherein the guard portion is supported so as to be tiltable back and forth with respect to the leg portion. The electric fan according to any one of claims 1 to 4, further comprising an adapter connection portion for supplying AC power. The electric fan according to any one of claims 1 to 5, wherein a battery pack for an electric tool can be mounted on the battery mounting portion.

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