electric fan

Abstract

To provide an electric fan that can improve stability.SOLUTION: An electric fan comprises an air blowing part 3, a strut part 2 extending downward from the air blowing part 3, and a base part 1 supporting the strut part 2. The base part 1 comprises; a depression part 9 recessed downward in a central part, into which a lower part of the strut part 2 is fitted; a plurality of outer peripheral leg parts 10 protruding downward from a peripheral edge part of the base part 1; and a plurality of inner peripheral leg parts 11 protruding downward from a peripheral edge part of the depression part 9. A ground contact surface on which the base part 1 is placed is in contact with the outer peripheral leg parts 10. The base part comprises a gap 18 between the ground contact surface and the inner peripheral leg parts 11. When the strut part 2 is inclined, the inner peripheral leg parts 11 come into contact with the ground contact surface.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a fan equipped with anti-vibration rubber feet.

Background Art

[0002] Conventionally, this type of fan has anti-vibration rubber feet attached to the bottom for suppressing vibration. (See, for example, Patent Document 1). The anti-vibration rubber feet of the conventional fan will be described below. A plurality of cylindrical protrusions are provided on the back surface of a base portion (not shown), and anti-vibration rubber feet are fixed to the cylindrical protrusions.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In such a conventional fan, it has a blowing section, a support column section extending downward from the blowing section, and a base section supporting the support column section. The base section has a plurality of anti-vibration rubber feet protruding downward from the peripheral edge of the base section. The grounding surface on which the base section is placed is in contact with the anti-vibration rubber feet. When a user accidentally touches the guard of the blowing section during movement, if the rigidity of the base section that supports the support column section is weak and easily deformed, the sway of the blowing section and the support column section of the fan becomes large, and there is a problem that the fan may fall over.

[0005] Therefore, the present invention solves the above conventional problems, and an object thereof is to provide a fan capable of improving the stability of the fan.

Means for Solving the Problems

[0006] To achieve this objective, the present invention comprises a blower, a support column extending downward from the blower, and a base supporting the support column, wherein the base has a recess in the center that is recessed downward and into which the lower part of the support column fits, a plurality of outer circumferential feet protruding downward from the periphery of the base, and a plurality of inner circumferential feet protruding downward from the periphery of the recess, the outer circumferential feet are in contact with the ground surface on which the base is placed, and there is a gap between the ground surface and the inner circumferential feet. With the outer foot portion in full contact with the ground surface, When the aforementioned support column tilts The base portion is deformed, The inner foot portion and the ground surface come into contact. [Effects of the Invention]

[0007] As described above, the present invention improves the stability of the fan and prevents it from tipping over. [Brief explanation of the drawing]

[0008] [Figure 1] Perspective view of a fan according to Embodiment 1 of the present invention [Figure 2] Deconstruction diagram of the fan [Figure 3] Deconstructed view of the base, support column, and nut of the fan from the contact surface side. [Figure 4] Cross-sectional view of the base of the electric fan. [Figure 5] Perspective view of the base of the fan. [Figure 6] Perspective view from the contact surface side of the disassembled nut section of the fan. [Modes for carrying out the invention]

[0009] Embodiments of the present invention will be described below with reference to the drawings.

[0010] (Embodiment 1) Figure 1 is a perspective view of the fan according to Embodiment 1 of the present invention, showing the fan from the upper right. Figure 2 is an exploded view of the fan according to Embodiment 1 of the present invention, showing the fan from the upper right. Figure 3 is an exploded view of the base, support column, and nut portion of the fan according to Embodiment 1 of the present invention, showing the base portion from the ground surface side, showing the base portion from below.

[0011] As shown in Figures 1, 2, and 3, the fan comprises a base 1, a support column 2, and an air blower 3.

[0012] The base portion 1 is placed on a floor or the like, has a bowl shape with an open bottom, and supports the support column portion 2.

[0013] The support column 2 is detachably attached to the base 1 and includes a support column portion 4 that extends vertically, and at the lower end of the support column portion 4, there is a roughly box-shaped switch portion 5 that extends horizontally and downward and contains a switch board (not shown) for controlling the fan. The support column portion 4 is roughly cylindrical in shape and extends vertically, and the support column portion 4 extends downward from the air blower portion 3.

[0014] The air blower unit 3 comprises a fan motor unit 6 fixed to the upper end of the support column unit 2, a blade unit 7 fixed to the rotation shaft (not shown) of the fan motor unit 6, and a guard unit 8 covering the blade unit 7. When the fan motor unit 6 is driven, the blade unit 7 fixed to the rotation shaft of the fan motor unit 6 rotates, and air is blown out.

[0015] The base portion 1 has a recessed area 9 in the center that is recessed downwards, into which the lower part of the support column portion 2 fits. The periphery of the base portion 1 has multiple outer peripheral feet 10 that protrude downwards, and an inner peripheral foot 11 that protrudes downwards from the periphery of the recessed area 9. One example of the outer peripheral feet 10 and inner peripheral feet 11 is made of rubber. The support column portion 2 has a threaded portion 12 that protrudes downwards from the bottom surface at the lower end of the support column portion 4, and a ring-shaped nut portion 13 that screws onto this threaded portion 12.

[0016] FIG. 4 is a cross-sectional view of the base portion of the fan according to Embodiment 1 of the present invention, and is a view of the base portion as seen from the rear side. The back side in FIG. 4 is the front side in the fan. In FIG. 4, the base portion is in a state of being placed on the floor surface 17, and a plurality of outer peripheral feet 10 are grounded on the floor surface 17, while the inner peripheral feet 11 have a gap 18 between them and the floor surface 17.

[0017] FIG. 5 is a perspective view of the base portion 1 of the fan according to Embodiment 1 of the present invention. Inside the base portion 1, a recessed portion 9 that is recessed downward at the center is provided. The recessed portion 9 includes a support recessed portion 14 where the bottom surface of the support portion 4 contacts, a hole 15 provided in the support recessed portion 14 through which a screw portion 12 passes, and a switch recessed portion 16 into which a switch portion 5 fits.

[0018] FIG. 6 is a perspective view from the grounding surface side of the disassembled nut portion of the fan according to Embodiment 1 of the present invention. At the lower end of the support portion 4, there is a screw portion 12 and a nut portion 13 that protrude downward from the bottom surface. The nut portion 13 has a hollow substantially cylindrical shape and includes a screw portion (not shown) inside, which is screwed with the screw portion 12. As shown in FIG. 6, the lower end of the support portion 2 fits into the recessed portion 9 of the base portion 1. The support portion 2 is fixed to the base portion 1 by inserting the switch portion 5 of the support portion 2 into the switch recessed portion 16 of the base portion 1, inserting the screw portion into the hole 15, and screwing the nut portion 13 with the screw portion 12.

[0019] The feature in this embodiment is that the inner peripheral feet 11 of the base portion 1 are the points that contact the grounding surface when the support portion 2 tilts. As shown in FIGS. 3 and 4, in a state where the fan is stably placed on the floor surface 17 which is the grounding surface, the outer peripheral feet 10 are in contact with the floor surface, while the inner peripheral feet 11 have a gap 18 between them and the floor surface. Here, when the user accidentally contacts the guard portion 8 of the blowing portion during movement, if the blowing portion 3 and the support portion 2 of the fan swing with respect to the floor surface 17, the base portion 1 may deform and the support portion 2 may tilt. When tilted in this way, the plurality of inner peripheral feet 11 protruding downward from the peripheral edge portion of the recessed portion 9 contact the floor surface, thereby reducing the tilt of the support portion 2 and suppressing the tipping over of the fan.

[0020] In addition, the plurality of inner peripheral feet 11 are provided at the peripheral edge of the switch recessed portion 16. That is, the plurality of inner peripheral feet 11 are provided at the peripheral edge of the switch recessed portion 16 that is apart from the strut recessed portion 14 where the bottom surface of the strut portion 4 contacts. If the plurality of inner peripheral feet 11 are provided in the strut recessed portion 14, the strut recessed portion 14 may descend due to the weight of the strut portion 2, the gap between the inner peripheral feet 11 and the floor surface may become small, and the plurality of inner peripheral feet 11 may contact the floor surface without the strut portion 2 tilting. That is, compared with the case where the plurality of inner peripheral feet 11 are provided at the peripheral edge of the strut recessed portion 14, in the case where the plurality of inner peripheral feet 11 are provided at the peripheral edge of the switch recessed portion 16, it is easier to secure the gap between the inner peripheral feet 11 and the floor surface, and only when the strut portion 2 tilts, the plurality of inner peripheral feet 11 protruding downward from the peripheral edge of the recessed portion 9 are more likely to contact the floor surface. Therefore, the toppling of the fan can be further suppressed.

[0021] As shown in FIG. 6, regarding the switch recessed portion 16, the space between the side surface of the switch recessed portion 16 of the fan on the side of the strut recessed portion 14 and the screw portion 12 of the strut portion 2 is small. When the user performs the tightening and loosening operations of the nut portion 13, a finger is easily caught in the space between the switch recessed portion 16 and the nut portion 13, and the tightening operation of the nut portion 13 is difficult. Therefore, by making the shape of the side surface of the switch recessed portion 16 on the side of the strut recessed portion 14 concave inward in the switch recessed portion 16 as it goes downward, the space between the switch recessed portion 16 and the nut portion 13 becomes larger, the catching of a finger is suppressed, and the tightening operation of the nut portion 13 becomes easier.

[0022] In addition, the side surface of the switch portion 5 of the strut portion 2 on the side of the strut portion 4 is recessed inward in the switch portion 5 as it goes downward. Thereby, when the strut portion 2 is mounted on the base portion 1, due to this recess, the switch portion 5 of the strut portion 2 easily enters into the switch recessed portion 16 of the base portion 1.

Industrial Applicability

[0023] The electric fan according to the present invention is useful in general households and other settings as an electric fan that improves stability and reduces the risk of tipping over. [Explanation of symbols]

[0024] 1. Base 2 Support section 3. Air blower 4 Support section 5. Switch section 6. Fan motor section 7. Wing section 8 Guard section 9. Recessed area 10. Outer perimeter of the foot 11. Inner circumference of the foot 12. Screw part 13. Nut part 14. Recessed section of the support post 15 holes 16. Switch recess 17 Floor surface 18 gaps

Claims

1. The air blower unit, A support column extending downward from the aforementioned air blower, It has a base portion that supports the aforementioned support column, The base portion is, The central part has a recess that is indented downwards, into which the lower part of the support column fits, Multiple outer foot portions protruding downward from the peripheral edge of the base portion, It has a plurality of inner circumferential foot portions that protrude downward from the peripheral edge of the recessed portion, The base portion is placed on the ground surface and the outer foot portion are in contact with each other. There is a gap between the contact surface and the inner foot portion. A fan in which, when the support column is tilted while the outer foot portion is in full contact with the ground surface, the base portion deforms and the inner foot portion comes into contact with the ground surface.

2. The aforementioned support column is The support column extends vertically, A roughly box-shaped switch section extends horizontally and downward from the lower part of the aforementioned support column, and contains a switch board. The threaded portion protruding downward from the bottom surface of the aforementioned support column, It has a nut portion that screws onto the aforementioned threaded portion, The recessed portion of the base is The bottom surface of the support column portion contacts the support column recess portion, A hole is provided in the recessed portion of the support column, through which the threaded portion passes, It has a switch recess portion into which the aforementioned switch portion fits, The support column is fixed to the base by inserting the threaded portion into the hole and screwing the nut portion onto the threaded portion. The fan according to claim 1, wherein the plurality of inner circumferential foot portions are provided on the periphery of the switch recess portion.

3. The electric fan according to claim 2, wherein the side surface of the base portion of the switch recess on the side of the support column recess is recessed inward towards the switch recess as it extends downward.

4. The electric fan according to claim 3, wherein the side surface of the switch portion of the support column that is on the support column side is recessed inward towards the switch portion as it extends downward.

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