JP3191871U - Fan - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a foldable fan capable of independently raising a fan on a floor surface at an appropriate height and changing a wind direction angle in the vertical direction. An electric fan 1 is provided on a floor surface with a flat plate-shaped case 21, an electric motor housed inside the case 21, and a fan portion 2 having an axial flow type impeller driven by the electric motor. A frame portion having a flat base portion 3 to be mounted and a pair of arms 41 rotatably attached to both the left and right sides of the case 21 and swingably supported on both the left and right sides of the base portion 3. A self-supporting posture in which a pair of arms 41 stand up from the base portion 3 to raise the fan portion 2 and a folding posture in which the pair of arms 41 and the case 21 are parallel to the base portion 3 to form a flat plate as a whole. It is configured to be deformable between. [Selection diagram] Fig. 1

Description

  The present invention relates to a foldable electric fan useful as a living electric fan.

  Patent Documents 1 and 2 disclose a fan that can be folded compactly when not in use. However, these electric fans are used as portable electric fans or in-car small electric fans, and are not suitable for use as a living electric fan. That is, the living fan is desired to be able to stand up on the floor and raise the fan at an appropriate height, or to change the angle of the wind direction in the vertical direction, but the conventional folding fan described above is Such a configuration could not be provided.

JP-A-5-19596 JP-A 61-160298

  The present invention has been made in view of the above circumstances, and its purpose is to be a folding type that can stand up on the floor and raise the fan at an appropriate height, or change the wind direction angle in the vertical direction. The purpose is to provide a fan.

  In order to achieve the above object, a fan according to the present invention includes a flat case, a motor housed in the case, and a fan unit having an axial-flow impeller driven by the motor. A plate-like base portion placed on the floor surface and a pair of arms that are pivotally mounted on both the left and right sides of the case, and are swingably supported on the left and right sides of the base portion. And a pair of arms that stand up from the base and lift up the fan part, and the pair of arms and the case are folded in parallel with the base so as to form a flat plate as a whole. It is configured to be deformable between postures.

  In use, the electric fan has a self-supporting posture in which an arm rises from a base portion placed on a floor surface, and can generate wind by rotation of an impeller of a fan portion lifted by the arm. At that time, by adjusting the swing of the arm relative to the base part, the fan part can be placed at an appropriate height from the floor, and by adjusting the rotation of the case with respect to the arm, the wind direction angle in the vertical direction is changed. it can. In addition, when not in use, the folding posture is a flat plate shape as a whole, which makes it easy to store and carry.

  As a preferred application example of the present invention, the frame portion is formed in a U shape by the pair of arms and a grip that is connected to the ends of the arms and is located above the fan portion, and the grip in a folded posture. And a case where a gap is formed between the case and the case. According to such a configuration, since the electric fan can be carried while holding the grip, handling in a folded position is particularly facilitated.

  As a preferred application example of the present invention, the pair of arms are configured to be extendable and the case and the base portion are adjacent to each other without interfering with each other in the folded position when they are most contracted. . According to such a configuration, it contributes to the height adjustment of the fan part in the self-supporting posture, and the folding posture is preferably compact.

  As a preferred application example of the present invention, there is a case in which the case and the base portion in a folded posture are within the range of the length of the frame portion along the longitudinal direction of the arm. According to such a configuration, the folding posture is preferably compact.

  As a preferred application example of the present invention, the base portion includes a base body to which the pair of arms are attached, a bottom plate attached to the bottom surface of the base body and rotatably supporting the base body, and the base And an electric motor that drives the main body. According to this configuration, the swing of the electric fan can be realized by rotating the base body on the bottom plate.

The perspective view which shows an example of the electric fan which concerns on this invention Front view of electric fan Side view of electric fan Vertical section of the fan Front view of the fan in the folded position Side view of the fan in the folded position Side view of a fan with different arm tilts

  Hereinafter, an embodiment of a fan according to the present invention will be described with reference to the drawings.

  1-3 shows the folding type electric fan 1 which can be used as a living electric fan. 4 is a longitudinal sectional view of the electric fan 1 cut at the center of FIG. 2 as viewed from the same side as FIG. 3 (right side of FIG. 2). The electric fan 1 includes a fan part 2 that generates wind, a flat base part 3 placed on a floor surface, and a frame part 4 that connects them. As will be described later, the electric fan 1 is configured to be deformable between a self-supporting posture that contributes to use (see FIGS. 1 to 3) and a folded posture that contributes to non-use (see FIGS. 5 and 6).

  Unless otherwise specified, the “up and down direction” and “left and right direction” in the description are directions seen from the user in front of the electric fan 1 used in a self-supporting posture, that is, directions in front view as shown in FIG. Based on “Front” indicates the direction from the electric fan 1 toward the user, and “rear” indicates the opposite direction. Therefore, the left direction in FIG. 3 is “front”, and the right direction is also “rear”.

  The fan unit 2 includes a flat case 21, an electric motor 22 accommodated in the case 21, and an axial flow type impeller 23 driven by the electric motor 22. The case 21 is constituted by a rear case member 21a positioned at the rear and a front case member 21b positioned at the front, and forms a casing on a flat plate by fitting them together. The rear case member 21a and the front case member 21b are formed with lattice windows for sucking and discharging air, respectively. The case 21 and the impeller 23 are made of resin, for example.

  The front surface (front surface) and back surface (rear surface) of the case 21 are generally flat, and the fan unit 2 is configured to be thin. 2, the case 21 has a D-shape having a side surface extending linearly in the vertical direction on both left and right sides, an upper surface extending linearly in the left-right direction, and a lower surface extending in a circular arc that protrudes downward. Present. However, the shape of the case 21 is not limited to this, and other shapes such as a simple rectangle and a circle can be appropriately employed.

  The electric motor 22 is attached to the rear case member 21a, and an impeller 23 is connected to a rotating shaft that protrudes forward. The thickness of the electric motor 22 including the rotation shaft is smaller than the thickness of the case 21, and the electric motor 22 and the impeller 23 that is rotatably supported by the electric motor 22 are housed in the case 21. The electric motor 22 is constituted by a DC motor, for example. Although the impeller 23 of this embodiment has seven blades, the number of blades can be changed as appropriate.

  The frame part 4 has a pair of arms 41 extending in parallel to each other. The pair of arms 41 is rotatably mounted on both the left and right sides of the case 21 and is swingably supported on both the left and right sides of the base portion 3. In the present embodiment, the arm 41 is attached at the center in the vertical direction of the case 21 (rear case member 21a). Further, the end portion of the arm 41 is supported in front of the side surface of the base portion 3 (base body 31), and the fulcrum of swinging of the arm 41 is set in front of the side surface of the base portion 3.

  As long as the relative rotation operation of the arm 41 and the case 21 is possible, a conventionally well-known mechanism can be employed without any particular restriction, but the shaft of one member is provided on the other member. A shaft support structure supported by a provided bearing is simple and preferable. Further, a click mechanism that generates a click feeling (moderation feeling) at the time of operation, and a mechanism that incorporates a damper (such as a rotary damper or a swing damper) that applies a braking force to the motion can be appropriately employed. In combination with these, it is also effective to provide a mechanism with a built-in stopper that prevents rotation beyond a predetermined angle.

  As long as the relative swing operation of the arm 41 and the base part 3 is possible, a conventionally known mechanism can be employed without any particular restriction, and a shaft support structure is also preferable. Similarly to the above, a mechanism incorporating a click mechanism or a damper can be employed, and a mechanism incorporating a stopper can be used in combination. As the click mechanism, for example, the structure disclosed in the registered utility model publication No. 3150936 can be adopted, but is not limited thereto.

  As a preferred application example, there is a structure in which a click mechanism is employed in the attachment portion between the arm 41 and the case 21 and a mechanism in which a damper is incorporated in the attachment portion between the arm 41 and the base portion 3 is cited. In this case, since a click feeling is obtained when adjusting the inclination of the case 21 with respect to the arm 41, operability when changing the wind direction angle in the vertical direction is excellent. Further, since the braking force acts on the swing of the arm 41 with respect to the base portion 3, the tilt of the arm 41 does not change with a light force, and the overall posture is stabilized.

  The fan 1 has a self-standing posture in which the pair of arms 41 rises from the base portion 3 as shown in FIGS. 1 to 3 and raises the fan portion 2, and the pair of arms 41 and the case 21 as shown in FIGS. It is comprised so that it can deform | transform between the folding attitude | positions which become parallel and parallel and form a flat plate shape as a whole. This deformation can be operated by adjusting the rotation of the case 21 with respect to the arm 41 and adjusting the swing of the arm 41 with respect to the base portion 3. FIG. 7 shows a state in which the arm 41 is tilted backward from the state of FIG. 3 and the fan unit 2 is slightly tilted with respect to the arm 41.

  In the self-supporting posture, the fan unit 2 is lifted away from the floor surface. By adjusting the swing of the arm 41, the fan unit 2 can be arranged at an appropriate height from the floor surface. In FIG. 7, the fan unit 2 is arranged at a position lower than that in FIG. Further, by adjusting not only the swing of the arm 41 but also the rotation of the case 21, the wind direction angle in the vertical direction can be changed. For this reason, when using the electric fan 1 as a living electric fan, it is useful. On the other hand, in the folded position, it is folded like a pipe chair, so it is easy to carry and requires less storage space.

  5 and 6 are drawn in a state where the folded electric fan 1 is stood up, but in the present embodiment, since it does not have a structure that is self-supporting in a folded posture, it is actually leaned against a wall or laid on the floor surface. It will be. In this folded position, the case 21 and the base portion 3 are adjacent to each other along the longitudinal direction of the arm 41 without interfering with each other, and are within the range of the length of the frame portion 4 along the longitudinal direction of the arm 41. ing. As a whole, it has a rectangular flat plate shape having four sides composed of a pair of arms 41, a rod-shaped grip 42, and the front surface of the base portion 3, and has a sense of unity in appearance.

  In FIG. 3, the arm 41 is slightly tilted backward with respect to the vertical direction. Although it is possible to raise the arm 41 so as to be in the vertical direction, there is little need to tilt forward beyond that. Accordingly, in the state where the base portion 3 is placed on the floor surface, the angle θ of the arm 41 with respect to the horizontal direction is sufficient if it is 90 degrees at the maximum in a self-supporting posture, but may be less than 90 degrees, and may be folded. The posture is 0 degree (see FIG. 6).

  The frame portion 4 has a U-shape formed by the pair of arms 41 described above and a grip 42 that is connected to the ends of the arms 41 and positioned above the fan portion 2. A gap 43 is formed between the grip 42 and the case 21 in the folded posture as well as the self-standing posture, and the grip 42 can be gripped by inserting a finger there. Thereby, the electric fan 1 can be carried using the upper part of the frame part 4 as a handle, and handling in a folded position becomes easy.

  In the present embodiment, the pair of arms 41 is configured to be extendable and retractable, and FIGS. 5 and 6 show the state in which the arm 41 is most contracted, and the case 21 and the base portion 3 are adjacent to each other without interfering with each other even in such a folded posture. The arm 41 is formed of a telescopic telescopic rod, and the length can be adjusted in a plurality of stages. This configuration is preferable because it contributes to the height adjustment of the fan unit 2 in a self-supporting posture and the folding posture becomes compact.

  A lock mechanism (not shown) is provided inside the arm 41 so that the expansion and contraction of the arm 41 is locked in the most extended state and the most contracted state. The locked state is released by pressing a button 44 provided on the grip 42. Such a lock mechanism for a telescopic telescopic rod is conventionally known and applied to a handle of a carry bag (see JP 2010-75328 A as an example).

  The base unit 3 includes a base body 31 to which a pair of arms 41 are attached, a bottom plate 32 attached to the bottom surface of the base body 31 and rotatably supporting the base body 31, and an electric motor 33 that drives the base body 31. And have. The base main body 31 rotates on the bottom plate 32, specifically, rotates around a rotation axis of the electric motor 33 within a predetermined angle range, thereby realizing the swing function of the electric fan 1. The base body 31 has a D-shape similar to that of the case 21 in a plan view in a state where the base body 31 is placed on the floor surface, and is designed and organized.

  An operation unit 34 for performing various operations is provided on the upper surface of the base unit 3. This operation includes, but is not limited to, power on / off switching, air volume adjustment, timer setting, swing switching, air blowing mode switching, and the like. Examples of the air blowing mode include continuous wind, rhythm wind, and good night wind (the air volume decreases with time). An operation by a remote controller (not shown) is also possible, and a light receiving portion 35 for that purpose is provided in the base portion 3. A control circuit for controlling the operation of the electric motor and the like is built in the base unit 3.

  A jack for connecting a power cord is provided on the rear surface of the base portion 3, and power is supplied to the electric motor 22 and the electric motor 33. A wiring cord for supplying power to the blower motor 22 is formed on the rear case member 21 a from the base portion 3 through the inside of one of the arms 41 and via the attachment portion between the arm 41 and the case 21. The motor 22 is reached along the spokes 24 formed. By attaching a covering cover for protecting the wiring cord to the spoke 24, it is possible to prevent the blades of the impeller 23 from interfering with the wiring cord.

  The present invention is not limited to the above-described embodiment, and various improvements and modifications can be made without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 1 Fan 2 Fan part 3 Base part 4 Frame part 21 Case 22 Electric motor 23 Impeller 31 Base main body 32 Bottom plate 33 Electric motor 41 Arm 42 Grip 43 Gap

Claims (5)

A fan portion having a flat case, an electric motor housed in the case, and an axial-flow impeller driven by the electric motor;
A flat base that is placed on the floor;
A frame portion having a pair of arms that are pivotally mounted on both the left and right sides of the case, and are swingably supported on the left and right sides of the base portion;
Deformable between the self-standing posture in which the pair of arms rises from the base portion and raises the fan portion, and the folding posture in which the pair of arms and the case are parallel to the base portion and form a flat plate as a whole. The fan is configured to.   The frame portion is formed in a U shape by the pair of arms and a grip that is connected to the ends of the pair of arms and located above the fan portion, and a gap is provided between the grip and the case in a folded position. The electric fan according to claim 1 formed.   The electric fan according to claim 1 or 2, wherein the pair of arms are configured to be extendable and the case and the base portion are adjacent to each other without interfering with each other in a folded posture when the arms are contracted most.   The electric fan according to any one of claims 1 to 3, wherein the case and the base portion in a folded posture are within a range of a length of the frame portion along a longitudinal direction of the arm.   The base portion includes a base body to which the pair of arms are attached, a bottom plate that is attached to a bottom surface of the base body and rotatably supports the base body, and an electric motor that drives the base body. Item 5. The electric fan according to any one of Items 1 to 4.

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