JP2016056687A - Electric fan - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric fan having a configuration that a support pillar is rotated to enable a blower part to be oscillated and an electrical wire is hardly broken.SOLUTION: An electric fan of this invention includes: a pedestal 20 comprising a pedestal side connection part 50 that can be turned in respect to a pedestal casing 21, a pedestal side electric contact 56 arranged at the pedestal side connection part 50 and rotatable in respect to the pedestal side connection part 50, a pedestal side electric wire 55 having one end connected to a control substrate 27 fixed to the pedestal casing 21 and having the other end connected to a pedestal side electric contact 56; and a blower part 10 comprising a blower part side connection part 40 that can be connected to the pedestal side connection part 50, a blower part side electric contact 46 arranged at the blower part side connection part 40 in a rotatable manner in respect to the blower part side connection part 40 and that can be connected to the pedestal side electric contact 56, and a blower part side electric wire 45 having one end connected to a fan motor 13 and the other end connected to the blower part side electric contact 46.SELECTED DRAWING: Figure 19

Description

  The present invention relates to a structure of an electric fan.

  In recent years, there has been an increase in the movement to obtain the effect of heating or cooling a room more effectively by agitating the air in the living space with a circulator because of the need for a comfortable living space or increased awareness of energy saving. . Under such circumstances, there is a demand for a fan that can be used throughout the year with a function of stirring the air in the living space like a circulator.

  In order to effectively stir the air in the living space, it is necessary to stir the air near the floor. Therefore, a fan having a function of stirring the air in the living space is required to have a function of adjusting the height of the blower unit that blows out the wind. As a function of adjusting the height of the blower unit, for example, as in Patent Document 1, a blower unit having a blade, an electric motor, and a guard (the head of Patent Document 1 is applicable), and a pedestal that supports the blower unit. There is an electric fan in which the connecting struts can be attached and detached, and the blower unit and the pedestal can be directly attached. Such a fan can adjust the height of the blower section by removing the support.

  In addition, the electric fan support is provided at both ends of the electric wire and the electric wire held by the electric support to electrically connect the power plug provided on the pedestal and the electric motor provided on the blower unit. Electrical contacts.

Japanese Utility Model Publication No. 58-191494

  Since the fan part of the electric fan of Patent Document 1 has a swing mechanism that swings the fan part such as a neck piece in addition to the blades, the electric motor, and the guard, the center of gravity is high.

  In order to improve the stability of the electric fan by lowering the center of gravity, a structure is conceivable in which the blower unit is swung by providing a swing mechanism on the pedestal side and rotating the support. In such a structure, the electric wire whose one end is held by the pedestal side connecting portion (supporting cylinder 3 of Patent Document 1) erected from the pedestal is the electric wire held by the removable column. In contrast, the other end of the wire is held on the pedestal. For this reason, when swinging, the pedestal side connection portion rotates, but the pedestal does not rotate, and the electric wire held in the pedestal side connection portion is held in the place held by the pedestal and the pedestal side connection portion. Twisted between points. Since this twisting causes distortion in the electric wire, there is a problem that it is easy to break.

  This invention is for solving such a subject, and it aims at obtaining the electric fan of the structure which can swing the blower by rotating a base side connection part, and an electric wire is hard to break. To do.

  The electric fan of the present invention includes a pedestal side connecting portion that is rotatable with respect to the pedestal casing, a pedestal side electrical contact that is provided at the pedestal side connecting portion and is rotatable with respect to the pedestal side connecting portion, and one end portion. Is connected to the power supply unit fixed to the pedestal casing, and the other end is a pedestal side electric wire connected to the pedestal side electrical contact, and the blower unit side that can be connected to the pedestal side connection unit The connection part, the blower part side electrical contact that is provided in the blower part side connection part so as to be rotatable with respect to the blower part side connection part, and can be connected to the pedestal side electrical contact, one end of which is connected to the fan motor One end part has a blower part provided with a blower part side electric wire connected to the blower part side electrical contact.

  In the fan according to the present invention, the pedestal-side electrical contact is rotatable with respect to the pedestal-side connecting portion, and the blower-unit-side electrical contact is rotatable with respect to the blower-unit-side connecting portion. By swinging, it is not twisted only in the section between the pedestal side electrical contact and the power supply unit, but is twisted in a section longer than the section between the pedestal side electrical contact and the power supply unit, so the amount of distortion per unit length is reduced, It becomes difficult to break.

It is a front view which shows the state which connected the air blower part of the electric fan which concerns on Embodiment 1 directly to the base. It is a front view which shows the state which isolate | separated the air blower part and base of the electric fan of FIG. It is a front view which shows the state which connected the air blower part of the electric fan which concerns on Embodiment 1 to the base via the support | pillar. It is a front view which shows the state which isolate | separated the air blower part, the support | pillar, and the base of the electric fan of FIG. 3 is a bottom view of the electric fan according to Embodiment 1. FIG. It is sectional drawing of the base of the electric fan based on Embodiment 1 applicable to the AA cross section of FIG.2, FIG4 and FIG.5. It is a bottom view of the blower part side connection part of the electric fan which concerns on Embodiment 1. FIG. It is sectional drawing of the air blower part side connection part of the electric fan which concerns on Embodiment 1 equivalent to CC cross section of FIG. FIG. 3 is an exploded cross-sectional view of a fan unit side connection portion of the electric fan according to Embodiment 1. FIG. 9 is an enlarged cross-sectional view of a fan unit side connection portion of the electric fan according to Embodiment 1 corresponding to a region D of FIG. 8. It is a top view of the base side connection part of the electric fan which concerns on Embodiment 1. FIG. It is sectional drawing of the base side connection part of the electric fan which concerns on Embodiment 1 equivalent to the EE cross section of FIG. FIG. 3 is an exploded cross-sectional view of a pedestal side connection portion of the electric fan according to Embodiment 1. It is an expanded sectional view of the base side connection part of the electric fan which concerns on Embodiment 1 and corresponds to the area | region F of FIG. It is a top view of the edge part by the side of the 1st support | pillar side connection part of the support | pillar of the electric fan which concerns on Embodiment 1. FIG. It is a top view of the edge part by the side of the 2nd support | pillar side connection part of the support | pillar of the electric fan which concerns on Embodiment 1. FIG. It is sectional drawing of the edge part by the side of the 1st support | pillar side connection part of the support | pillar of the electric fan which concerns on Embodiment 1 corresponding to the GG cross section of FIG. It is sectional drawing of the edge part by the side of the 2nd support | pillar side connection part of the support | pillar of the electric fan which concerns on Embodiment 1 corresponding to the HH cross section of FIG. It is sectional drawing of the electric fan equivalent to the BB cross section of FIG. 5 of the state which connected the air blower part directly to the base in the electric fan which concerns on Embodiment 1. FIG. It is sectional drawing of the fitting location of the fan part side connection part of the electric fan which concerns on Embodiment 1, and the base side connection part corresponded to the II cross section of FIG. It is sectional drawing of the electric fan equivalent to the BB cross section of FIG. 5 of the state which connected the air blower part to the base via the support | pillar in the electric fan which concerns on Embodiment 1. FIG.

Embodiment 1 FIG.
FIG. 1 is a front view showing a state in which the fan part of the electric fan according to Embodiment 1 is directly connected to a pedestal. FIG. 2 is a front view showing a state where the blower unit and the pedestal of the electric fan shown in FIG. 1 are separated from each other. The electric fan 100 includes a blower unit 10 and a pedestal 20 that supports the blower unit 10.

  The blower unit 10 includes a fan 11, a protective guard 12 that protects the fan 11, a fan motor 13 (see FIG. 19) that is a DC motor that rotates the fan 11, and a blower unit casing 14 that houses the fan motor 13. And a blower part side connection part 40 provided in the blower part casing 14. The blower part side connection part 40 protrudes from the lower part side of the blower part casing 14.

  The pedestal 20 includes a pedestal casing 21 having a space inside, and a pedestal-side connection portion 50 provided so as to protrude from the center of the upper surface of the pedestal casing 21. The protrusion side end of the blower part side connection part 40 has a shape that can be connected to the protrusion side end part of the pedestal side connection part 50, as will be described later, and the blower part side connection part 40 and the pedestal side connection part 50. And the blower unit 10 can be attached to the base 20 as shown in FIG. The pedestal side connection portion 50 is formed separately from the pedestal casing 21 and can be rotated with respect to the pedestal casing 21.

  FIG. 3 is a front view showing a state in which the fan part of the electric fan according to Embodiment 1 is connected to the pedestal via a support. FIG. 4 is a front view showing a state in which the blower unit, the column, and the pedestal of the electric fan shown in FIG. 3 are separated from each other. The electric fan 100 has a support 30 that can be connected to the blower unit 10 and the pedestal 20.

  One end portion of the support column 30 is provided with a first support column-side connection portion 30 a formed in the same shape as the protruding end portion of the blower unit connection portion 40. The other end of the support column 30 is provided with a second support column side connection portion 30b formed in the same shape as the protruding end portion of the base connection portion 50. For this reason, the 1st support | pillar side fitting part 30a can be fitted with the base side connection part 50. FIG. The 2nd support | pillar side fitting part 30b can be fitted with the air blower part side connection part 40. FIG. Therefore, as shown in FIG. 3, the blower unit 10 can be attached to the pedestal 20 via the support column 30. Thus, the electric fan 100 of Embodiment 1 can change the height of the air blower part 10 by attaching or detaching the support | pillar 30. FIG.

  Next, the swing mechanism of the first embodiment will be described. FIG. 5 is a bottom view of the electric fan according to the first embodiment. FIG. 6 is a cross-sectional view of the pedestal of the electric fan according to the first embodiment corresponding to the AA cross section of FIGS. 2, 4, and 5. In addition, although the bottom part of the electric fan of Embodiment 1 is covered with the baseplate 21a of the base casing 21, in FIG. 5, the baseplate 21a of the base casing 21 of the base 20 is abbreviate | omitted for description. The pedestal 20 includes a oscillating mechanism including a swing motor 22, a first gear 23, a second gear 24, a bearing 25, and a bearing fixing plate 26 inside the pedestal casing 21. Yes. The swing motor 22 is fixed to the base casing 21. The first gear 23 is attached to the drive shaft of the swing motor 22. When the drive shaft of the swing motor 22 rotates, the first gear 23 also rotates. The second gear 24 meshes with the first gear 23, and when the first gear 23 rotates, the second gear 24 also rotates. The center of rotation of the second gear 24 coincides with the central axis in the cross section perpendicular to the longitudinal direction of the pedestal side connecting portion 50. The second gear 24 is provided with an opening through which a pedestal-side electric wire 55 described later passes. The bearing 25 is a rolling bearing and includes a rolling element 25c between the inner ring 25a and the outer ring 25b. The inner ring 25 a is sandwiched between the pedestal side connection part 50 and the second gear 24. The outer ring 25 b is sandwiched between the base casing 21 and the bearing fixing plate 26. In the first embodiment, the bearing 25 includes a rolling bearing, but other bearings such as a sliding bearing, a magnetic bearing, and a fluid bearing may be used.

  When the drive shaft of the swing motor 22 rotates, the rotational force of the swing motor 22 is transmitted to the pedestal side connection portion 50 via the first gear 23 and the second gear 24. As described above, since the pedestal side connection portion 50 can be rotated with respect to the pedestal casing 21, the pedestal side connection portion 50 is rotated by the rotational force of the swing motor 22 to perform the swing operation. Further, the direction of rotation of the swing motor 22 and the direction of rotation of the pedestal side connection portion 50 are linked. For example, in the first embodiment, when the swing motor 22 rotates clockwise, the pedestal side connection is performed. The part 50 rotates counterclockwise, and when the swing motor 22 rotates counterclockwise, the pedestal side connection part 50 rotates clockwise.

  The swing angle of the pedestal side connection 50 during the swing operation is proportional to the rotation angle of the swing motor 22 and the gear ratio of the first gear 23 and the second gear 24. In the case of the electric fan of the first embodiment, the gear ratio between the first gear 23 and the second gear 24 is constant, and therefore the swing angle of the pedestal side connection portion 50 is determined by the rotation angle of the swing motor 22. For this reason, the swing angle of the pedestal side connecting portion 50 can be controlled by controlling the rotation angle of the swing motor 22. In the present invention, the rotation angle of the swinging motor 22 includes a rotation angle of 360 ° or more. When the drive shaft of the swinging motor 22 rotates twice, it is 720 °, when it rotates three times, 1080 °, N When rotating (N is an arbitrary real number), it is (360 × N) °.

  The base casing 21 has a control board 27 and an operation input board 28 in addition to the swing mechanism. The control board 27 is fixed to the base casing 21 via a spacer 27a (see FIG. 19), and is electrically connected to the swinging motor 22. The control board 27 can be electrically connected to a power source such as a commercial power source, and can supply power to the swing motor 22 to rotate the swing motor 22. A control unit such as a microcomputer is mounted on the control board 27, and the swing motor 22 is controlled by the control unit. In addition, the control unit can control the rotation angle of the swing motor 22, and the control unit has a rotation angle of the swing motor 22 that rotates the base side connection unit 50 by a predetermined swing angle in advance. Is remembered. In this case, the control unit first rotates the swing motor 22 in one direction by a rotation angle stored in advance (step S1). After execution of step S1, the control unit rotates the swing motor 22 by an angle twice as large as the rotation angle stored in advance in a direction opposite to one direction of step S1 (step S2). After execution of step S2, the control unit rotates the swing motor 22 by twice the rotation angle stored in advance in the same direction as that of step S1 (step S3). After executing step S3, the process returns to step S2 again, and steps S2 and S3 are repeated. In this way, the control unit controls the swing motor 22 so that the pedestal side connection unit 50 swings left and right by a predetermined swing angle with the position immediately before the start of the swing motor 22 being 0 °. The driving can be repeated.

  Further, the control board 27 is electrically connected to the fan motor 13, and the fan motor 13 can be rotated by receiving power supplied from the control board 27. For this reason, the control board 27 of Embodiment 1 is equivalent to the electric power supply part of this invention. Moreover, the control part of the control board 27 can control the rotation speed of the fan motor 13 by means, such as changing the voltage value supplied to the fan motor 13, and can control the air volume of the electric fan 100.

  The operation board 28 is fixed to the pedestal casing 21, and the control board 27 and the operation input board 28 are electrically connected by a board electric wire 29. The user can input information about the air volume of the fan 100 and the presence or absence of swinging to the operation input board 28. Information regarding the air volume of the fan 100 and the presence or absence of swinging input to the operation input board 28 is transmitted to the control board 27 via the board electric wire 29. The control unit of the control board 27 controls the fan motor 13 and the swing motor 22 according to the information transmitted from the operation input board 28. In addition, as a method for the user to input information regarding the air volume of the fan 100 and the presence / absence of swinging to the operation input board 28, for example, as part of the operation input board 28, the air volume of the fan 100 and the presence / absence of swinging may be used. A plurality of individually corresponding operation switches are provided on the upper surface of the pedestal casing 21, and the user operates the operation switches to input information about the air volume of the fan 100 and the presence or absence of swinging to the operation input board 28, or the operation Separate from the input board 28, the user can input information on the air volume of the electric fan 100 and the presence / absence of swinging, and includes a remote controller having a transmitter for transmitting the input information. A receiving unit that receives information transmitted from the fan 100 is provided, and the user operates the remote controller to control the air volume and swing of the fan 100 on the operation input board 28. Whether a method of inputting the like information about.

  Next, the blower unit side connection unit 40 will be described. FIG. 7 is a bottom view of the blower portion side connection portion of the electric fan according to Embodiment 1. FIG. FIG. 8 is a cross-sectional view of the blower portion side connecting portion of the fan according to Embodiment 1 corresponding to the CC cross section of FIG. 7. FIG. 9 is an exploded cross-sectional view of the blower portion side connection portion of the electric fan according to Embodiment 1. FIG. 10 is an enlarged cross-sectional view of the fan unit side connection portion of the fan according to Embodiment 1 corresponding to region D in FIG. 8. The blower part side connection part 40 includes a cylindrical blower part side connection part main body 41 and a blower part side concave fitting part 42 provided at an end of the blower part side connection part 41.

  The blower part side connection part main body 41 has a hollow cylindrical shape in which a blower part side connection part internal space 41a is formed. The upper end of the blower part side connection part main body 41 is integrated with the blower part casing 14, and a circular opening 41 b communicating with the blower part side connection part inner space 41 a is formed on the lower end surface of the blower part side connection part main body 41. Has been. Moreover, the lower end surface of the blower part side connection part main body 41 is provided with a terminal receiving groove 41c formed along the periphery of the opening 41b and a plurality of screw holes 41d positioned on the outer peripheral side of the terminal receiving groove 41c. ing.

  The blower portion side concave fitting portion 42 is a cylindrical member having a concave cross-sectional shape in which a hollow portion 42a is formed. A plurality of screw holes 42b are formed in the bottom part 42f of the blower part side concave fitting part 42. By inserting the screw 43 into the screw holes 41d and 42b, the blower part side connecting part main body 41 and the blower part side concave fitting part 42 are fitted to the lower end part of the blower part side connecting part main body 41 and the blower part side concave fitting part. The bottom part 42f of the part 42 is fixed oppositely. A circular opening 42c communicating with the recess 42a is formed in the bottom 42f of the blower part side concave fitting part 42 at a position facing the opening 41b of the blower part side connection part main body 41. The hollow part 42a of the fitting part 42 and the blower part side connection part internal space 41a are connected. Further, a terminal receiving groove 42d is formed in the bottom 42f of the blower portion side concave fitting portion 42 along the circumference of the opening 42c in a shape substantially the same as the terminal receiving groove 41c of the blower portion side connecting portion main body 41. Yes. A terminal receiving space 44 is formed between the blower portion side connecting portion main body 41 and the blower portion side concave fitting portion 42 by the terminal receiving grooves 41c and 42d. Further, on the inner peripheral surface of the recess 42a of the blower part side concave fitting part 42, a fitting rib 42e stands up toward the central axis every 60 ° with respect to the central axis of the blower part side concave fitting part 42. It is installed.

  The blower part side electric wire 45 is accommodated in the blower part side connection part inner space 41a. A convex connector 46 corresponding to the blower unit side electric contact of the present invention is provided at one end of the blower unit side electric wire 45. A disk-shaped connector holding plate 46 a is formed on the outer periphery of the blower unit side convex connector 46. The length of the connector holding plate 46a in the direction perpendicular to the outer periphery of the blower portion side convex connector 46, that is, the thickness T1 of the connector holding plate 46a is the sum of the step heights of the terminal receiving grooves 41c and 42d, that is, the terminal receiving. The space 44 is formed thinner than the distance T <b> 2 from the blower part side connecting part main body 41 to the concave fitting part 42. The radius R1 of the connector holding plate 46a is larger than the radius R2 of the openings 41b and 42c and smaller than the radius R3 of the terminal receiving grooves 41c and 42d. For this reason, the connector holding plate 46 a can be inserted into the terminal receiving space 44. Since the connector holding plate 46a inserted in the terminal receiving space 44 is sandwiched between the blower part side connection part main body 41 and the blower part side concave fitting part 42, the blower part side convex connector 46 is connected to the blower part side connection part. The movement of 40 in the axial direction is restricted. Further, since the thickness T1 of the connector holding plate 46a is thinner than the distance T2 from the blower part side connection part main body 41 of the terminal receiving space 44 to the blower part side concave fitting part 42, the blower part side convex connector 46 is a blower. It can rotate with respect to the blower unit side connection unit 40 about the central axis of the unit side connection unit 40. Moreover, since the blower part side connection part main body 41 is integrated with the blower part casing 14, the blower part side convex connector 46 is also rotatable with respect to the blower part casing 14 and the fan motor 13.

  The other end of the blower unit side electric wire 45 is connected to the fan motor 13, and the blower unit side convex connector 46 and the fan motor 13 are electrically connected via the blower unit side electric wire 45. .

  Next, the pedestal side connection unit 50 will be described in detail. FIG. 11 is a top view of the base connection portion of the electric fan according to Embodiment 1. FIG. 12 is a cross-sectional view of the pedestal side connecting portion of the electric fan according to Embodiment 1, corresponding to the EE cross section of FIG. 11. FIG. 13 is an exploded cross-sectional view of the pedestal side connection portion of the electric fan according to the first embodiment. FIG. 14 is an enlarged cross-sectional view of the pedestal side connecting portion of the electric fan according to Embodiment 1 corresponding to the region F in FIG. The pedestal side connection portion 50 includes a pedestal side connection portion main body 51 and a pedestal side terminal holding plate 52 provided on the pedestal side convex fitting portion 51 a at the upper end of the pedestal side connection portion main body 51.

  The pedestal-side connecting portion main body 51 has a hollow cylindrical shape in which a pedestal-side connecting portion inner space 51 b is formed, and the outer diameter of the pedestal-side convex fitting portion 51 a is the outer diameter of the other part of the pedestal-side connecting portion main body 51. The cross-sectional shape of the upper end portion of the pedestal side connecting portion main body 51 is a convex shape. A circular opening 51c that communicates with the pedestal-side connecting portion inner space 51a is formed on the upper end surface of the pedestal-side convex fitting portion 51a, and a terminal receiving groove 51d is formed along the periphery of the opening 41b. Further, in the pedestal-side convex fitting portion 51 a of the pedestal-side connection portion main body 51, a fitting protrusion 51 e protruding in the circumferential direction of the pedestal-side connection portion main body 51 is based on the central axis of the pedestal-side connection portion main body 51. Are provided every 120 °. The fitting protrusion 51e is provided with a screw hole 51f.

  The pedestal-side terminal holding plate 52 is a disk-shaped member having substantially the same shape as the upper end surface of the pedestal-side convex fitting portion 51a of the pedestal-side connecting portion main body 51 and having a fitting protrusion 52a. A screw hole 52b is formed in the pedestal side terminal holding plate 52 at a position corresponding to the screw hole of the pedestal side connecting portion main body 51, that is, in the fitting projection 52a. When the screw 53 is inserted into the screw holes 51f and 52b, the pedestal-side connection portion main body 51 and the pedestal-side terminal holding plate 52 are opposed to the upper end portion of the pedestal-side connecting portion main body 51 and the bottom surface of the pedestal-side terminal holding plate 52. Fixed. On the surface of the pedestal side terminal holding plate 52 facing the pedestal side connecting portion main body 51, an opening 52 c that penetrates the other surface of the pedestal side terminal holding plate 52 at a position facing the opening 51 c of the pedestal side connecting portion main body 51. The pedestal side connecting portion internal space 51b communicates with the outside through the openings 51c and 52c. Further, a terminal receiving groove 52d along the circumference of the opening 52c is formed on the surface of the pedestal side terminal holding plate 52 facing the pedestal side connecting part main body 51. It is formed into a shape. A terminal receiving space 54 is formed between the pedestal side connecting portion main body 51 and the pedestal side terminal holding plate 52 by the terminal receiving grooves 51d and 52d.

  A pedestal-side electric wire 55 is accommodated in the pedestal-side connecting portion inner space 51b. A pedestal-side concave connector 56 corresponding to the pedestal-side electrical contact of the present invention is provided at one end of the pedestal-side electric wire 55. A disk-shaped connector holding plate 56 a is formed on the outer periphery of the base-side concave connector 56. The length of the connector holding plate 56a in the direction perpendicular to the outer periphery of the pedestal-side concave connector 56, that is, the thickness T3 of the connector holding plate 56a is the sum of the heights of the steps of the terminal receiving grooves 51d and 52c, that is, the terminal receiving space 54. It is formed thinner than the distance T4 from the pedestal side connecting portion main body 51 to the pedestal side terminal holding plate 52. Further, the radius R4 of the connector holding plate 56a is larger than the radius R5 of the openings 51c and 52c and smaller than the radius R6 of the terminal receiving grooves 51d and 52c. For this reason, the connector holding plate 56 a can be inserted into the terminal receiving space 54. Since the connector holding plate 56a inserted into the terminal receiving space 54 is sandwiched between the pedestal side connection portion main body 51 and the terminal holding plate 52, the pedestal side concave connector 56 moves the pedestal side connection portion 50 in the axial direction. It is regulated. Further, since the thickness T3 of the connector holding plate 56a is thinner than the distance T4 from the pedestal side connection portion 50 of the terminal receiving space 54 to the terminal holding plate 52, the pedestal side concave connector 56 has a central axis of the pedestal side connection portion 50. As a center, it can rotate with respect to the pedestal side connecting part main body 51.

  The other end of the pedestal side electric wire 55 is connected to the control board 26, and the pedestal side recessed connector 56 and the control board 26 are electrically connected via the pedestal side electric wire 55.

  Next, the support column 30 will be described. FIG. 15 is a plan view of the end portion on the first strut-side connecting portion side of the electric fan according to the first embodiment. FIG. 16 is a plan view of the second strut-side connecting portion side of the strut of the electric fan according to the first embodiment. FIG. 17 is a cross-sectional view of the end portion on the first strut-side connecting portion side of the strut of the electric fan according to Embodiment 1 corresponding to the GG cross-section of FIG. 15. FIG. 18 is a cross-sectional view of the end portion on the second strut side connecting portion side of the strut of the electric fan according to Embodiment 1 corresponding to the HH cross section of FIG. 16. As described above, the first support column connection portion 30a is provided at one end of the support column 30, and the second support column connection portion 30b is provided at the other end portion. The column 30 includes a hollow cylindrical column main body 31 in which a column internal space 31 a is formed, and a column-side concave fitting portion 32 provided on the first column-side connection portion 30 a side of the column main body 31. And a column-side terminal holding plate 33 provided on the column-side connection part 30b side of the column body 31.

  The first strut connecting portion 30a is formed by attaching the strut-side concave fitting portion 32 to the strut body 31, and has the same shape as the blower portion-side connecting portion 40, that is, the same shape as FIG. Further, the cross-sectional view and the exploded cross-sectional view of the first support column connecting portion 30a have the same configurations as those in FIGS. For this reason, an opening 31b, a terminal receiving groove 31c, and a screw hole 31d corresponding to the opening 41b, the terminal receiving groove 41c, and the screw hole 41d of the blower part side connecting part main body 41 are formed on one end face of the support column body 31, respectively. ing. Further, the support-side recessed fitting portion 32 includes a recessed portion 32a and a screw corresponding to the recessed portion 42a, the screw hole 42b, the opening 42c, the terminal receiving groove 42d, and the fitting rib 42e of the blower portion-side recessed fitting portion 42, respectively. A hole 32b, an opening 32c, a terminal receiving groove 32d, and a fitting rib 32e are formed. Further, the column main body 31 and the column-side concave fitting portion 32 are arranged such that one end surface of the column main body 31 and the bottom portion 32f of the column-side concave fitting portion 32 face each other by inserting a screw 34a into the screw holes 31d and 32b. Fixed. Further, one end portion of the support column 30 is provided with a support column side convex connector 35 having the same shape as the blower unit side convex connector 46 corresponding to the first column side electric contact of the present invention. A disc-shaped connector holding plate 35 a is formed on the outer periphery of the convex connector 35. The column-side convex connector 35 has the column 30 for the same reason as the fan-side convex connector 46 by inserting the connector holding plate 35a into the terminal receiving space 36 formed by the terminal receiving grooves 31c and 32d. At the same time, the movement in the axial direction of the column 30 is restricted, and at the same time, it can be rotated with respect to the column main body 31 around the central axis of the column 30.

  The second column connecting part 30b is formed by attaching the column side terminal holding plate 33 to the column main body 31, and has the same shape as the pedestal side connecting unit 50, that is, the same shape as FIG. Further, the cross-sectional view and the exploded cross-sectional view of the second support post 30b have the same configuration as that of FIGS. Therefore, a column-side convex fitting portion 31e corresponding to the pedestal-side convex fitting portion 51a is formed at the other end of the column main body 31, and a cross-sectional shape of the other end of the column main body 31 is formed. Is convex. Further, the support protrusion convex fitting portion 31e has a fitting protrusion 31f corresponding to the fitting protrusion 51e of the pedestal side connecting portion main body 51 every 120 ° with respect to the central axis of the pedestal side connecting portion main body 51. Is provided. An opening 31g, a terminal receiving groove 31h, and a screw hole 31i corresponding to the opening 51c, the terminal receiving groove 51d, and the screw hole 51f of the pedestal side connecting part main body 51 are formed on the end face of the support-side convex fitting part 31e. Yes. The support-side terminal holding plate 33 includes fitting protrusions 52a, screw holes 52b, openings 52c of the pedestal-side terminal holding plates 52, and fitting protrusions 33a, screw holes 33b, openings corresponding to the terminal receiving grooves 52d, respectively. 33c and a terminal receiving groove 33d are formed. Further, the column main body 31 and the column side terminal holding plate 33 are fixed so that the other end surface of the column main body 31 and the bottom surface of the column side terminal holding plate 33 face each other by inserting the screw 34b into the screw holes 31i and 33b. Is done. Further, a column-side concave connector 37 having the same shape as the base-side concave connector 56 corresponding to the second column-side electrical contact of the present invention is provided at the other end of the column 30. A connector holding plate 37a is formed on the outer periphery of the connector. The support-side concave connector 37 is inserted into the terminal receiving space 38 formed by the terminal receiving grooves 31h and 33d, and the connector holding plate 37a is inserted into the support-side concave connector 56 in the axial direction of the support 30. At the same time as the movement is restricted, the column 30 can rotate with respect to the column body 31 about the central axis of the column 30.

  A column-side electric wire 39 is accommodated in the column space 31a. One end of the column-side electric wire 39 is connected to the column-side convex connector 35, and the other end is connected to the first column-side concave connector 36. Accordingly, the column-side convex connector 35 and the column-side concave connector 36 are electrically connected via the column-side electric wire 39.

  Next, the fitting of the blower unit side connection unit 40, the pedestal side connection unit 50, and the support column 30 will be described in detail. FIG. 19 is a cross-sectional view of the electric fan corresponding to the BB cross section of FIG. 5 in a state where the blower unit is directly connected to the base in the electric fan according to the first embodiment. 20 is a cross-sectional view of a fitting portion of the fan-side connecting portion and the pedestal-side connecting portion of the fan according to Embodiment 1 corresponding to the II cross section of FIG. FIG. 21 is a cross-sectional view of the electric fan corresponding to the BB cross section of FIG. 5 in a state where the blower unit is connected to the pedestal via the support in the electric fan according to the first embodiment. 19 and 21, illustrations of the swing mechanism, the operation input board 28, and both ends of the cross section of the base 20 are omitted.

  As shown in FIG. 16, the blower part side connection part 40 and the pedestal side connection part 50 are connected by fitting the blower part side concave fitting part 42 and the pedestal side convex fitting part 51 a. Further, the fitting protrusions 51e and 52a of the pedestal side connection part 50 are located between the fitting ribs 42e of the blower part side connection part 40. Further, since the blower unit side convex connector 46 and the pedestal side concave connector 56 are also connected when the blower unit side connection unit 40 and the pedestal side connection unit 50 are connected, the control board 26 and the fan motor 13 are connected to the pedestal side. Electrical connection is made via the electric wire 55, the pedestal side concave connector 56, the blower unit side convex connector 46, and the blower unit side electric wire 45, and power can be supplied to the fan motor 13.

  When the swing mechanism rotates the pedestal side connection part 50 in a state where the blower part side connection part 40 and the pedestal side connection part 50 are connected, the fitting protrusions 51e and 52a come into contact with the fitting ribs 42e, and the neck The force for rotating the pedestal side connection portion 50 by the swing mechanism is transmitted to the blower portion side connection portion 40 via the fitting protrusion 51e and the fitting rib 42e. Thus, the swing mechanism can rotate the blower unit side connection unit 40 and the blower unit 10 with respect to the base casing 21 and can perform a swing operation.

  Further, as shown in FIG. 19, the pedestal side convex fitting portion 51 a and the column-side concave fitting portion 32 are fitted, whereby the pedestal-side connecting portion 50 and the first column-side fitting portion 30 a of the column 30 are connected. The blower part side concave fitting part 42 and the strut side convex fitting part 31e are fitted to connect the blower part side connecting part 40 and the second strut side fitting part 30b of the pillar 30. The Furthermore, when the pedestal side connection portion 50 and the support column 30 are connected, the pedestal side concave connector 56 and the support column side convex connector 35 are connected, and when the blower unit side connection portion 40 and the support column 30 are connected, Since the pedestal-side convex connector 46 and the column-side concave connector 36 are connected, the control board 26 and the fan motor 13 include the pedestal-side electric wire 55, the pedestal-side concave connector 56, the column-side convex connector 35, and the column-side electric wire 39. , The column side concave connector 36, the blower unit side convex connector 46, and the blower unit side electric wire 45, and the electric power can be supplied to the fan motor 13.

  Even when the blower unit side connection unit 40 and the pedestal side connection unit 50 are connected via the support column 30, if the swing mechanism rotates the pedestal side connection unit 50, the fitting protrusion of the pedestal side connection unit 50 The forces 51 e and 52 a come into contact with the fitting ribs 32 e of the support column 30, and the force for rotating the pedestal side connection part 50 of the swing mechanism is transmitted to the support column 30. Further, the fitting protrusions 31f and 33a of the support column 30 are in contact with the fitting rib 42e of the blower part side connection part 40, and the base part connection part 50 of the swing mechanism is also rotated by the blower part side connection part 40. The force is transmitted to the blower unit side connection unit 40. Thus, the swing mechanism can rotate the support column 30, the blower part side connection part 40, and the blower part 10 with respect to the base casing 21, and can perform a swing operation.

  Both when the blower unit side connection unit 40 and the pedestal side connection unit 50 are directly connected and when the blower unit side connection unit 40 and the pedestal side connection unit 50 are connected via the support column 30, during the swinging operation, The pedestal-side electric wire 55 connecting the fan motor 13 of the blower unit 10 and the control board 10 fixed to the pedestal casing 21 is twisted by the swing operation. The amount of twist of the pedestal side electric wire 55 is proportional to the swing angle.

  In a conventional fan, the blower unit side electric wire, the pedestal side electric wire, and the column side electric wire are respectively integrated with the fan unit side connection unit, the pedestal side connection unit, and the column by means such as being embedded by insert molding. Was retained. In this case, among the electric wires, the fan portion side connection portion, the pedestal side connection portion, and the holding portion of the support column rotate with respect to the pedestal casing at an angle corresponding to the swing angle by the swing operation. The control board is fixed to the pedestal casing, and the pedestal-side electric wire is in the section between the holding location with the pedestal-side connection and the holding location with the control board, so the pedestal-side electric wire is twisted by swinging operation. It was. On the other hand, since the fan part side electric wire exists in the area between the holding location with a fan part side connection part, and the holding location with a fan motor, the fan part side electric wire was not twisted. In addition, the column-side electric wire is in the section between the column on one end side and the holding unit of the column-side electric wire, and the column between the column on the other end side and the holding unit of the column-side electric wire. It was not done. For this reason, only when the blower part side connection part and the pedestal side connection part are directly connected and when the blower part side connection part and the pedestal side connection part are connected via a support, only the pedestal side electric wire swings. It was twisted by driving.

  In the electric fan according to the first embodiment, the pedestal that is a holding position between the pedestal-side recessed connector 56 that is a holding position of the pedestal-side electric wire 55 and the pedestal-side connecting part 50 and the blower-side connecting part 40 of the fan-side electric wire 45. The side convex connectors 46 are held so as to be rotatable about the central axes of the pedestal side connection part 50 and the blower part side connection part 40 with respect to the pedestal side connection part 50 and the blower part side connection part 40, respectively. Further, the column 30 convex connector 35 which is a holding position with the column 30 on one end side of the column side electric wire 39 and the column side concave connector 36 which is a holding site with the other column 30 are also used for the column 30. On the other hand, it is rotatably held around the central axis of the support column 30. For this reason, the pedestal side concave connector 56, the blower unit side convex connector 46, the support column side convex connector 35, and the support column side concave connector 36 are connected to the pedestal side connection unit 50 and the blower unit side connection unit 40 by swinging operation. And it can rotate with respect to the base casing 21 at an angle different from each of the columns 30. Therefore, when the blower part side connection part 40 and the pedestal side connection part 50 are directly connected, the pedestal side electric wire 55 and the blower part side electric wire 45 are integrated in the section between the fan motor 13 and the control board 26. Become twisted. Further, when the blower unit side connection unit 40 and the pedestal side connection unit 50 are connected via the support column 30, the pedestal side electric wire 55, the support column side electric wire 39, and the blower unit side electric wire 45 are connected to the fan motor 13. In the section between the control boards 26, they are twisted together.

  Since the electric wire is distorted by torsion, and the distortion causes the electric wire to break, it is desirable that the amount of distortion is as small as possible. The amount of distortion of the electric wire due to twisting is proportional to the twist angle per unit length, and the twist angle per unit length becomes smaller as the interval between sections where the twist occurs is longer and the swing angle is smaller. That is, the electric wire is more difficult to be disconnected as the interval between sections where the twist occurs is longer and the swing angle is smaller. In an electric fan in which a conventional electric wire and support are integrated, the section where the twist occurs is between the holding position of the pedestal side connecting portion and the holding position of the control board, and the interval of this section is from the total length of the pedestal side electric wire. Can not take long. On the other hand, in the electric fan of the first embodiment, the section where the twist occurs is a section between the fan motor 13 and the control board 26. The interval between the sections is a length obtained by adding the total length of the pedestal side electric wires 55 and the total length of the blower unit side electric wires 45 when the blower portion side connecting portion 40 and the pedestal side connecting portion 50 are directly connected, When the blower unit side connection unit 40 and the pedestal side connection unit 50 are connected via the support column 30, the total length of the pedestal side electric wire 55, the total length of the support column side electric wire 39, and the total length of the blower unit side electric wire 45 are added. Length. Therefore, the electric fan of the first embodiment can take a longer section where twisting occurs than a conventional electric fan in which an electric wire and a support are integrated, so that the amount of distortion of the electric wire due to torsion is reduced, and the fan motor It is difficult to disconnect the electric wire connecting the control board.

  Further, in the swing operation by the swing mechanism, the swing mechanism includes the blower unit 10, the blower unit side connection unit 40, and the pedestal side connection unit 50, and the central axis of the pedestal side connection unit 50 and the blower unit side connection unit 40. Rotate repeatedly as a center. At this time, since the electric wire connecting the fan motor and the control board is also repeatedly twisted, the mechanical strength of the electric wire is reduced due to fatigue, and eventually the wire is broken due to fatigue failure. In addition, the greater the amount of distortion due to twist, the more the mechanical strength of the electric wire is reduced due to fatigue, and the number of twists until disconnection decreases. The electric fan of the first embodiment has a smaller amount of distortion of the electric wire due to torsion than the electric fan in which the electric wire and the support are integrated. Therefore, it is difficult to disconnect the electric wire.

  As described above, the electric fan 100 according to the first embodiment includes the pedestal-side concave connector 56, the blower-side convex connector 46, the support-side convex connector 35, and the support-side concave connector 36, respectively. 50, the blower part side connection part 40, and the structure which can be rotated with respect to the support | pillar 30, the distortion amount by the twist of the electric wire which connects a fan motor and a control board becomes small, and an electric wire is disconnected. It is difficult to do.

  Furthermore, in the electric fan 100 of Embodiment 1, since the amount of distortion is reduced by taking a longer interval between sections where twisting occurs than in the conventional electric fan, the swing angle can be set larger than that in the conventional electric fan. Can blow air current over a wide range.

  Moreover, in the electric fan 100 of Embodiment 1, since the base side electric wire 55 and the fan part side electric wire 45 are integrally twisted, the base side electric wire 55 can be shortened rather than the conventional electric fan. Since the length of the pedestal side connection portion 50 can be shortened by shortening the pedestal side electric wire 55, the height of the fan 100 when the blower portion side connection portion 40 and the pedestal side connection portion 50 are directly connected is set. Can be lowered.

  Furthermore, in the electric fan 100 of Embodiment 1, since the swing mechanism is housed in the base 20, the weight of the blower unit 10 is reduced by the weight of the swing mechanism. If the weight of the blower unit 10 is heavy, the center of gravity of the fan becomes high, and the fan easily falls over. In addition, when adjusting the height of the fan, the fan that adjusts the height by attaching and detaching the support post is designed to remove the blower part from the support post or pedestal and then attach and detach the support post. The user feels inconvenient in adjusting the height. In the electric fan of the first embodiment, since the weight of the blower unit 10 is reduced by the weight of the swing mechanism, the height can be easily adjusted. In particular, since the swing mechanism is housed in the pedestal 20, the weight of the pedestal 20 is increased by the weight of the swing mechanism, and the center of gravity of the electric fan 100 is lowered. Moreover, since the fan motor 13 of Embodiment 1 is a DC motor, compared with the AC motor generally used for a fan motor, the fan part 10 can be further reduced in weight and the center of gravity of the electric fan 100 becomes low. .

  In addition, in the electric fan 100 of Embodiment 1, although there is only one support | pillar 30, the number of the support | pillars 30 may be two or more. When there are two or more struts, even if the number of struts is two or more, the first and second strut-side electrical contacts of the respective struts are connected to the first and second strut-side connections. If it is the structure which can be rotated, it can exhibit the effect that an electric wire becomes difficult to break like the electric fan of Embodiment 1. Moreover, since the 1st support | pillar side connection part is the same shape as an air blower part side connection part, and the 2nd support | pillar side connection part is the same shape as a base side connection part, the number of support | pillars is two or more. In some cases, the second strut-side connection portion of another strut can be connected to the first strut-side connection portion of a certain strut. For this reason, when there are two or more struts, there is an effect that the height of the electric fan can be changed depending on the number of struts interposed between the blower unit and the pedestal. Furthermore, when there are two or more struts, the length of each strut can be set to a different length so that the length of the fan can be changed by changing the length of the struts interposed between the blower unit and the base. There is an effect that it can be changed. Moreover, even if it is a fan used only when connecting an air blower part and a base directly without a support | pillar, the effect that an electric wire becomes difficult to disconnect similarly to the electric fan of Embodiment 1 can be exhibited.

  Moreover, in the electric fan 100 of Embodiment 1, the connector holding plates 46a, 56a, 35a, and 37a are inserted into the terminal receiving spaces 44, 54, 36, and 38, respectively, so that the blower unit side electric wire 45 and the pedestal side are provided. The electric wire 55 and the column-side electric wire 39 are restricted from moving in the axial direction with respect to the blower unit-side connection unit 40, the pedestal-side connection unit 50, and the column 30, respectively. , While restricting movement of the pedestal side electric wire and the column side electric wire in the axial direction, the blower side electric contact, the pedestal side electric contact, the first column side electric contact, and the second column side electric contact, Are only required to be configured to be rotatable with respect to the blower-side connection portion, the pedestal-side connection portion, the first strut-side connection portion, and the second strut-side connection portion. For example, a disk-shaped electric wire holding plate corresponding to a connector holding plate may be formed on the outer periphery of the blower unit side electric wire, and the electric wire holding plate may be inserted into the terminal receiving space 44. Further, without providing a connector holding plate, a bearing is inserted into the terminal receiving space 44, the outer ring of the bearing is in contact with the blower part strut body 41 and the blower part side concave fitting part 42, and the inner ring is connected to the blower side convex connector 46. You may comprise so that it may touch.

  Further, in the electric fan 100 of the first embodiment, the support-side concave connector 36, that is, the holding position of the support-side electric wire 39 and the support 40 on the blower support 40 side is rotatable with respect to the support connection portion. However, you may become the structure which cannot be rotated with respect to support | pillar connection parts, such as insert molding. Also in this case, when the blower part side connection part and the pedestal side connection part are connected via the support column, the pedestal side is a section between the holding position of the support column side electric wire 39 on the blower support column 40 side and the control board 26. Since the electric wire and the pole-side electric wire are twisted together, the interval between the sections where the twist occurs is the total length of the pedestal-side electric wire and the post-side electric wire, so the amount of distortion of the electric wire due to twisting is reduced, and the fan The electric wire connecting the motor and the control board is difficult to be disconnected.

  Moreover, in the electric fan 100 of Embodiment 1, the blower part side connection part 41 and the concave fitting part 42, the pedestal side connection part main body 51 and the pedestal side terminal holding plate 52, the column main body 31 and the column side concave fitting part 32, and The column main body 31 and the column side terminal holding plate 33 are formed as separate bodies and are fixed with screws, but are not limited thereto. For example, the column main body 31 and the column-side concave fitting portion 32 may be integrated by means such as bonding with an adhesive. Also, even when the support column is formed by integrating the support column main body, the support column side concave fitting portion, and the support column side terminal holding plate, the support column is divided into two parts on the left and right with respect to the center axis of the support column. Alternatively, the connector holding plate may be configured to be clamped from the left and right by the divided strut parts.

  Further, in the electric fan 100 of the first embodiment, the swing mechanism is composed of the swing motor 21, the first gear 22, the second gear 23, the bearing 24, and the bearing fixing plate 25. Transmits the rotational force of the swing motor to the blower unit side connecting portion, such as a configuration for transmitting the rotational force of the swing motor to the blower unit side connecting portion by a belt, or a configuration to transmit to the blower unit side connecting portion by a crank mechanism. Any configuration is acceptable. Also, there is no need for a swing mechanism, and even when the user manually rotates the pedestal side connection part, the support, the blower support and the blower part with respect to the pedestal casing, Since the amount of distortion of the electric wire due to torsion that occurs when rotating is reduced, the same effect as the electric fan 100 of the first embodiment can be obtained.

  Moreover, in the electric fan 100 of Embodiment 1, the fan part side main body 41 of the fan part side connection part 40 protrudes from the lower part of the fan part casing 14, and the base side main body 51 of the base side connection part 50 is the base casing 21. Although it protrudes from the upper surface, it is not limited to this. For example, the pedestal-side connecting part main body is not projected from the upper surface of the pedestal, but a pedestal-side convex fitting part that can rotate with respect to the pedestal casing is directly provided on the upper surface of the pedestal, and only the pedestal-side convex fitting part is provided It does not matter as the side connection part main body. Also in this case, the pedestal-side electric wire is connected to the pedestal-side electrical contact provided in the pedestal-side convex fitting portion and the control board inside the pedestal, and the pedestal-side electrical contact is rotatable with respect to the pedestal-side connection portion. Therefore, the same effect as the electric fan of Embodiment 1 can be obtained. Also, the blower part side connection part body is not projected from the lower part of the casing, and instead of the blower part side connection part body, an opening and a terminal receiving groove are formed in the lower part of the blower part casing, and the blower part side concave fitting part is connected to the blower part. It may be directly connected to the lower part of the casing. In this case, the blower portion side concave fitting portion corresponds to the blower side connection portion, and the terminal receiving space is formed between the blower portion casing and the blower portion side concave fitting portion. Since the contact can be rotated via the blower side connecting portion, the same effect as the electric fan of the first embodiment can be obtained.

  Furthermore, in the electric fan 100 of Embodiment 1, although the control part of the control board 27 to which the base side electric wire 55 is connected controls the fan motor 13 and the swing motor 22, it is not restricted to this, and the swing motor A control board having a control unit for controlling 22 may be provided separately, and the control part of the control board to which the pedestal-side electric wire is connected may control the fan motor 13. In this case, the control board to which the pedestal-side electric wire is connected corresponds to the power supply unit of the present invention. In addition, the control board 27 and the operation input board 28 of the first embodiment may be combined and configured as a single board. Furthermore, the power supply unit of the present invention is not limited to the control board 27 as in the first embodiment, and is, for example, a switch that switches whether power from a power source such as a commercial power source is supplied to the fan motor. In addition, if power can be supplied to the fan motor, it is not limited to the substrate.

  Moreover, in the electric fan 100 of Embodiment 1, the base side connection part 50 is a convex shape, has a concave connector as a base side electrical contact, and the fan part side connection part 40 is a concave shape. Although it has a convex connector as a blower part side electrical contact, it is not restricted to this. The pedestal side electrical contact and the blower side electrical contact are not limited to the pedestal side concave connector 56 and the blower unit side convex connector 46 of the first embodiment, and the pedestal side electrical contact and the blower side electrical contact are connected to each other. What is necessary is just to be able to connect a fan motor. As such a pedestal side electrical contact and a blower unit side electrical contact, for example, when the pedestal side electrical contact and the blower unit side electrical contact are in a shape that can be fitted, the pedestal side electrical contact and the blower unit side electrical contact are polar. There are cases in which different magnets are provided and connected by magnetic force. Moreover, the base side connection part and the blower part side connection part should just be mechanically connectable with a base side connection part and a blower part connection part. As an example of the pedestal side connection portion and the blower portion connection portion that can be mechanically connected, for example, when the pedestal side connection portion and the blower portion connection portion are fitable, the pedestal side connection portion and the blower portion connection portion are When fixing using fasteners such as clasps, when fixing the pedestal side connection part and the blower part connection part with screws, the pedestal side connection part and the blower part connection part must be polar. There is a case where different magnets are provided and fixed by magnetic force. Further, the pedestal side electrical contact and the blower unit side electrical contact are not limited to the shapes of the pedestal side concave connector 56 and the blower unit side convex connector 46 of Embodiment 1, and the pedestal side electrical contact and the blower unit side electrical contact are connected. If possible. In addition, for the first strut-side fitting portion, the second strut-side fitting portion, the first strut-side electrical contact, and the second strut-side electrical contact of the strut, the pedestal-side connection portion and the blower portion side, respectively. What is necessary is just to be connectable with a connection part, a base side electrical contact, and a blower part side electrical contact.

DESCRIPTION OF SYMBOLS 10 Blower part, 11 Fan, 12 Protection guard, 13 Fan motor, 14 Blower part casing, 20 base, 21 base casing, 22 Swing motor, 23 1st gear, 24 2nd gear, 25 Bearing, 25a Inner ring, 25b Outer ring, 25c rolling element, 26 bearing fixing plate, 27 control board, 27a spacer, 28 operation input board, 29 inter-board wire, 30 struts, 30a first strut side connection part, 30b second strut side connection part, 31 Column body, 31a Column space, 31b opening, 31c Terminal receiving groove, 31d screw hole, 31e Column-side convex fitting part, 31f Fitting projection, 31g opening, 31h Terminal receiving groove, 31i Screw hole, 32 Column side Recessed fitting part, 32a hollow part, 32b screw hole, 32c opening, 32d terminal receiving groove, 32e fitting rib, 3 2f bottom part, 33 column side terminal holding plate, 33a fitting projection, 33b screw hole, 33c opening, 33d terminal receiving groove, 34a screw, 34b screw, 35 column side convex connector, 35a connector holding plate, 36 terminal receiving space , 37 Post side concave connector, 37a Connector holding plate, 38 Terminal receiving space, 39 Post side electric wire, 40 Blower part side connecting part, 41 Blower part side connecting part, 41a Blower part side connecting part inner space, 41b Opening, 41c Terminal receiver Groove, 41d screw hole, 42 blower part side concave fitting part, 42a recess part, 42b screw hole, 42c opening, 42d terminal receiving groove, 42e fitting rib, 42f bottom part, 43 screw, 44 terminal receiving space, 45 blower part Side electric wire, 46 Blower side convex connector, 46a Connector holding plate, 50 Base side connection part, 51 Base side Connection part main body, 51a Base side convex fitting part, 51b Base side connection part inner space, 51c Opening, 51d Terminal receiving groove, 51e Fitting projection part, 51f Screw hole, 52 Terminal holding plate, 52a Fitting projection part, 52b Screw hole, 52c opening, 52d Terminal receiving groove, 53 Screw, 54 Terminal receiving space, 55 Base side electric wire, 56 Base side concave connector, 56a Connector holding plate, 100 Fan

Claims (9)

A pedestal casing, a power supply unit fixed to the pedestal casing, a pedestal side connection portion provided on the upper surface side of the pedestal casing and rotatable with respect to the pedestal casing, and provided on the pedestal side connection portion A pedestal-side electrical contact rotatable with respect to the pedestal-side connecting portion; a pedestal-side electric wire having one end connected to the power supply unit and the other end connected to the pedestal-side electrical contact; A pedestal with
A blower part casing, a fan motor fixed to the blower part casing, a pedestal side connection part and a blower part side connection part provided on the lower side of the blower part casing, and the blower part side connection The blower part side electrical contact that is provided at the blower part side connection part so as to be rotatable relative to the part and is connectable to the pedestal side electrical contact, one end part is connected to the fan motor, and the other end part is A blower unit side electric wire connected to the blower unit side electrical contact, and a blower unit comprising:
A fan with Provided in the first strut-side connecting portion connectable to the pedestal-side connecting portion, the second strut-side connecting portion connectable to the blower portion-side connecting portion, and the first strut-side connecting portion. The first column side electrical contact that can be connected to the pedestal side electrical contact, and the blower unit side electrical contact that is provided at the second column side connection unit so as to be rotatable with respect to the second column side connection unit. A first column-side electrical contact that can be connected to the first column, one end connected to the first column-side electrical contact and the other end connected to the second column-side electrical contact A pedestal-side electric wire, and the first column-side connection portion includes a column provided at one end, and the second column-side connection unit includes a column provided at the other end. The electric fan described in 1. The electric fan according to claim 2, wherein the first strut-side electrical contact is rotatable with respect to the first strut-side connection portion. The pedestal side connection part is a shape that can be fitted to the blower side connection part,
The first support column side connection part is a shape that can be fitted to the pedestal side connection part,
The electric fan according to claim 2 or 3, wherein the second strut-side connection portion has a shape that can be fitted to the blower-side connection portion. The pedestal side electrical contact has a shape that can be fitted to the blower side electrical contact, and when the pedestal side electrical contact and the blower side electrical contact are fitted, the pedestal side electrical contact and the blower side electrical contact are Are electrically connected,
The first column-side electrical contact has a shape that can be fitted to the pedestal-side electrical contact, and when the first column-side electrical contact and the pedestal-side electrical contact are fitted, the first column-side electrical contact An electrical contact and the pedestal side electrical contact are electrically connected,
The second strut-side electrical contact has a shape that can be fitted to the blower-side electrical contact. When the second strut-side electrical contact and the blower-side electrical contact are fitted, the second strut-side electrical contact The electric fan according to claim 4, wherein the electrical contact and the blower side electrical contact are electrically connected. The electric fan according to any one of claims 1 to 5, wherein the pedestal includes a swing mechanism for rotating the pedestal side connection portion. The blower part side connection part protrudes from the lower part of the blower part casing,
The electric fan according to any one of claims 1 to 6, wherein the blower unit side electrical contact is provided at an end portion on a protruding side of the blower unit side connection portion. The pedestal side connection portion protrudes from the upper surface of the pedestal casing,
The electric fan according to any one of claims 1 to 7, wherein the pedestal side electrical contact is provided at an end portion on a protruding side of the pedestal side connection portion. The electric fan according to any one of claims 1 to 8, wherein the fan motor is a DC motor.

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