Blower

Abstract

To provide a blower that has a detachable air intake port and can be cleaned readily.SOLUTION: A blower includes a blower part that includes: a fan; a motor for driving the fan; a motor cover for holding the motor; and a case part for accommodating the motor cover. The case part includes: a first member firmly fixed to the motor cover; and a second member including an air intake port, through which air taken by the fan circulates, and detachably connected to the first member.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] One aspect of the present invention relates to a blower such as a circulator. [Background technology]

[0002] Conventionally, there have been circulators used to agitate and circulate air in a space. Patent Document 1 discloses a circulator that has an air flow path 3 that connects an air intake 4 on the back to an air outlet 5 on the front, creates an air flow with a blower fan 6 arranged in the air flow path 3, and circulates the indoor air with the air flow. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2011-208910 A Summary of the Invention [Problem to be solved by the invention]

[0004] Conventional circulators take in air through an air intake provided on the rear cover, but the air intake is configured to be partitioned by multiple ribs to prevent foreign objects from coming into contact with the fan. On the other hand, when the circulator is in use, dust accumulates on the ribs, which can cause poor air flow and make the circulator unhygienic. However, since the rear cover is fixed to the motor cover that supports the fan and the motor that rotates the fan, and the support legs are inserted into the cover, it is difficult to remove the rear cover in its entirety, which creates the problem that it is difficult to remove the dust accumulated on the ribs. [Means for solving the problem]

[0005] In order to solve the above problems, the present invention provides the following blower.

[0006] One aspect of the present invention is a blower equipped with a blower section including a fan, a motor that drives the fan, a motor cover that holds the motor, and a case that houses the motor cover. The case section has a first member fixed to the motor cover, and a second member that has an air intake port through which air taken in by the fan flows and is detachably connected to the first member.

[0007] According to the blower having the above configuration, the second member can be removed from the blower body including the first member, making it easy to remove dust accumulated at the air intake of the second member and to clean the second member.

[0008] Preferably, the above blower further comprises a support portion including a support leg which is inserted into the slit of the case portion and pivotally attached to the motor cover.

[0009] With the blower configured as described above, the direction of the fan can be easily rotated by rotating the motor cover relative to the support leg, making it possible to easily and effectively circulate air in the space in which it is placed.

[0010] In the above blower, the slit is preferably formed in the first member.

[0011] With a blower of the above configuration, there is no need to provide a slit between the first member and the second member, and the configuration makes it easier to prevent interference between the support leg and other members caused by dimensional errors between the first member and the second member, etc.

[0012] In the above-mentioned blower, preferably, the first member and the second member are joined to each other such that, in a cross section of the joint, one side of each protrudes relative to the other side, and the convex portion of the first member faces the concave portion of the second member, and the concave portion of the first member faces the convex portion of the second member.

[0013] According to the blower having the above configuration, the first member and the second member are joined with a spigot structure, so that the gap between the first member and the second member can be made inconspicuous. Even if there is a small gap between the first member and the second member, it is possible to suppress the occurrence of rattle. This is particularly effective when the first member and the second member are made of resin, since manufacturing variations such as some distortion are likely to occur. In addition, the strength of each end where the first member and the second member are joined can be increased, making them less likely to break.

[0014] In the above blower, preferably, the second member has a shape with a lower side open, and the first member has a shape extending into the open portion of the second member.

[0015] According to the blower having the above configuration, the first member covers the lower open portion of the second member, and the first member can be stably supported.

[0016] In the above blower, the first member and the second member preferably have a convex portion and a concave portion, which fit into each other, on surfaces facing each other in the attachment / detachment direction.

[0017] According to the blower having the above configuration, the first member and the second member can be easily positioned by fitting the convex portion and the concave portion together. In particular, in the blower of the present invention, the user removes the second member and attaches the second member to the first member each time, so such a configuration that allows easy positioning is effective.

[0018] In the above blower, preferably, a joint between the first member and the second member has a pair of vertical sides extending in the up-down direction and a horizontal side connecting the upper ends of the vertical sides. The first member and the second member have a first convex portion and a first concave portion, and a second convex portion and a second concave portion, which fit together, on surfaces facing each other in the attachment / detachment direction. The first convex portion and the first concave portion are provided on the vertical sides, and the second convex portion and the second concave portion are provided on the horizontal side.

[0019] According to the blower having the above configuration, even if a vertical or horizontal external force acts on either the first member or the second member, rattling can be suppressed by the action of the convex and concave portions provided on the vertical and horizontal sides and fitted together.

[0020] In the above blower, preferably, the recess is a long hole, and the protrusion is a ridge provided at a position corresponding to the long hole so as to extend along the long hole. The protrusion may be a plurality of ridges provided at positions corresponding to the long hole so as to extend along the long hole.

[0021] According to the blower having the above configuration, even if the first member and the second member are misaligned, they can be easily fitted together by fitting the convex portion with the concave portion. This is particularly effective when the first member and the second member are made of resin, since manufacturing variations such as slight distortion are likely to occur.

[0022] In the above blower, at least one of the protrusions and the recesses preferably has a tapered surface at a position facing the recesses or the protrusions provided on the opposing surface.

[0023] According to the blower having the above configuration, the recessed portion and the protruding portion can be easily fitted together. Also, the protruding portion can be press-fitted into the recessed portion, which can prevent rattling between the first member and the second member.

[0024] In the above blower, preferably, a nut having a threaded hole into which a bolt for connecting to the second member is screwed is embedded in the first member, and the second member has a through hole through which the bolt is inserted.

[0025] According to the blower having the above configuration, the first member and the second member can be stably connected. In addition, even if the second member is repeatedly removed from the first member, the screw hole can be prevented from being crushed. Furthermore, the screwing of the bolt and the nut can prevent the second member from falling off the first member even if vibrations occur due to the operation of the blower.

[0026] In the above blower, the nut is preferably configured to be embedded in the first member such that at least a part of a surface on the side where the screw hole is formed is covered with resin.

[0027] According to the blower having the above configuration, it is possible to prevent the connecting nut from being lost. [Brief description of the drawings]

[0028] [Figure 1] FIG. 1 is a perspective view of the exterior of a blower as viewed from the front. [Diagram 2] FIG. 2 is an external perspective view of the blower as seen from the rear. [Diagram 3] FIG. 3 is a front view of the blower. [Figure 4] FIG. 4 is a rear view of the blower. [Diagram 5] FIG. 5 is a top view of the blower. [Figure 6] FIG. 6 is a perspective view of the blower from which the second member has been removed, as viewed from the rear. [Figure 7] FIG. 7 is an exploded perspective view of the blower as viewed from the rear. [Figure 8] FIG. 8 is an exploded perspective view of the blower as viewed from the front. [Figure 9] FIG. 9 is a plan view of the first member as viewed from the outside (rear). [Figure 10] FIG. 10 is a plan view of the second member as viewed from the inside (front). [Figure 11] FIG. 11 is a cross-sectional view of the joint between the first member and the second member taken along the line AA in FIG. [Figure 12] FIG. 12 is a cross-sectional view of the joint between the first member and the second member taken along the line BB in FIG. [Figure 13] FIG. 13 is a perspective view of the blower of the first modified example with the second member removed, as viewed from the rear. [Figure 14] FIG. 14 is an external perspective view of the blower of the second modification, as viewed from the front. [Figure 15] FIG. 15 is an external perspective view of the blower of the second modification, as viewed from the rear. [Figure 16] FIG. 16 is a perspective view of the fan of the second modification example with the second member removed, as viewed from the rear. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0029] Hereinafter, an embodiment of a blower of the present invention will be described in detail with reference to the drawings. However, the embodiment described below is merely one example of the present invention, and is not intended to limit the technical scope of the present invention. In each drawing, the same components are given the same reference numerals, and their description may be omitted.

[0030] [Embodiment 1] [exterior] Figures 1 to 5 are external views of blower 1. Figure 1 is a perspective view seen from the front, Figure 2 is a perspective view seen from the rear, Figure 3 is a front view, Figure 4 is a rear view, and Figure 5 is a top view. Blower 1 is designed to increase air speed with a spherical grill structure, and to look compact with an evolved spherical design.

[0031] As shown in the figure, the blower 1 has a blowing section 2 and a support section 3. The blowing section 2 is supported by the support section 3.

[0032] In blower 1, blower section 2 is supported by support section 3 so as to be rotatable in the circumferential direction relative to the axial direction extending up and down. In other words, blower section 2 is rotatable laterally relative to support section 3. In this specification, this is sometimes referred to as blower section 2 having a left-right swing function. In addition, blower section 2 is rotatable in the up-down direction relative to support section 3.

[0033] The blower unit 2 includes a case unit 20 having a spherical outer shell, including a front case 21 and a rear case 22 that can be separated at a midpoint between the front and rear. The case unit 20 can be separated into the front case 21 and the rear case 22. This makes it easy to manufacture the front case 21 and the rear case 22, and also makes it easy to arrange parts inside the case unit 20 during manufacturing.

[0034] [Specific configuration of each part] [Blower section] Fig. 6 is a perspective view of blower 1 from the rear with second member 222 removed from first member 221 of rear case 22. Fig. 7 and Fig. 8 are exploded perspective views of blower 1, Fig. 7 is a view from the rear and Fig. 8 is a view from the front.

[0035] As described above, the blower 2 includes the case 20 including the front case 21 and the rear case 22. The blower 2 accommodates the fan 27, the motor 28, and the motor cover 29 inside the case 20.

[0036] As shown in Figures 7 and 8, the front case 21 is formed in a shape like a spherical shell with the front half of the front part cut off, and has a circular opening 21a that opens forward. The front case 21 can be formed of a synthetic resin material such as polypropylene. A spherical grill 23 is fitted into the circular opening 21a from the rear. That is, the front case 21 has the grill 23 with the air outlet 2a formed on the front side.

[0037] The front case 21 is detachably connected to the first member 221 of the rear case 22. The front case 21 may be connected in a fixed state to the first member 221, but being detachable is useful in that the fan 27 can be easily cleaned. The front case 21 may be detachably connected to the second member 222. However, since the second member 222 is removed from the first member 221 during cleaning, etc., the front case 21 may be configured not to be connected to the second member 222 to facilitate removal. Since the front case 21 is connected to the motor cover 29 via the first member 221, and the motor cover 29 is connected to the support leg 33, it can be said that the front case 21 is supported by the support leg 33 via the first member 221 and the motor cover 29.

[0038] The grill 23 is a front panel made of, for example, a synthetic resin material having high impact resistance. In this embodiment, the grill 23 has a plurality of spiral fins 24, and the plurality of fins 24 are formed in a convex curved shape so as to gradually protrude toward the center O of the spiral. By configuring the grill 23 in this way, when air is blown from the rear of the grill 23 and the airflow passes through the grill 23, a spiral airflow is generated that moves straight while swirling. In this embodiment, the grill 23 is formed so that the front surface forms a part of a sphere. The fins 24 are for guiding the blown air, and may be called an "airflow guide plate."

[0039] Thus, in blower 1, front case 21 including grill 23 forms a front hemisphere of blower section 2.

[0040] The rear case 22 is formed in a shape like a spherical shell with the rear part of the front half cut off, and becomes the case part 20 by being connected to the front case 21. The rear case 22 includes a first member 221 and a second member 222. The rear case 22 is formed in a hemispherical shape by a plurality of bars 22a provided on the first member 221 and the second member 222, and an air intake 22b for taking in outside air is formed over almost the entire surface of the rear case 22. Like the front case 21, the rear case 22 can be formed of a synthetic resin material such as polypropylene.

[0041] 9 is a view of the first member 221 as seen from the outside (rear). As shown in FIGS. 4 and 9, the first member 221 has a shape extending in the up-down direction along a spherical surface. The edge of the first member 221 that joins with the second member 222 is in an inverted U shape, with the upper ends of parallel vertical sides 221a and 221b connected by a curved horizontal side 221c. The edge 221d that joins with the front case 21 of the first member 221 extends in an arc shape facing the front case 21.

[0042] The first member 221 is supported by the motor cover 29 in a fixed state. That is, the first member 221 is fixed by the support leg 33 via the motor cover 29. The lower end of the first member 221 where the edge portion 221d is located is not abutted against the support portion 3 and is in a floating state. The first member 221 is formed with two slits 2211 extending in the vertical direction through which the support leg 33 is inserted. The two slits 2211 are each along the curved shape of the first member 221 and extend linearly parallel to each other when viewed from the back. The blower 1 has a vertical swing structure in which the blower portion 2 rotates in the vertical direction relative to the support portion 3, and the provision of the slit 2211 provides a structure in which the support leg 33 does not interfere with the first member 221 during vertical swing. When the slit 2211 is provided in the first member 221, it is possible to easily achieve positioning accuracy during assembly. The slit 2211 may be shaped to extend to the edge 221d that is the joint with the front case 21, or may be formed from a position away from this edge 221d.

[0043] FIG. 10 is a view of the second member 222 as seen from the inside (front). As shown in FIG. 4 and FIG. 10, the second member 222 has a shape that becomes a hemisphere when connected to the first member 221. The second member 222 is detachably connected to the first member 221. The second member 222 has a circular outer edge that is a joint with the front case 21, and an inner edge that is a joint with the first member 221 is an inverted U-shape with an open lower side. Since the second member 222 is supported by the first member 221, it is preferable to arrange the second member 222 as in this embodiment, in which the first member 221 is located below the second member 222, because this increases stability.

[0044] The inner edge of the second member 222 is formed in such a manner that the upper ends of the parallel vertical sides 222a and 222b are connected by the curved horizontal side 222c, similar to the first member 221. In other words, the first member 221 can be said to have a shape that extends to the open portion of the second member. The second member 222 can be removed from the blower 1 by removing it from the first member 221, and can be cleaned separately, and can also be washed with water as necessary.

[0045] (Joining of the first member 221 and the second member 222) As described above, the first member 221 and the second member 222 are joined together in an inverted U-shape with the lower side open.

[0046] FIG. 11 is a cross-sectional view including a joint portion between the first member 221 and the second member 222 at the position AA in FIG. 4. In the joint portion, the first member 221 has a convex portion 2212 on the inner surface side and a concave portion 2213 on the outer surface side. The second member 222 has a concave portion 2223 on the inner surface side and a convex portion 2222 on the outer surface side. On the inner surface side, the convex portion 2212 of the first member 221 and the concave portion 2223 of the second member 222 face each other. On the outer surface side, the convex portion 2222 of the second member and the concave portion 2213 of the first member 221 face each other. In this joint portion, the inner surface and the outer surface of the first member 221 and the second member 222 are both continuous. That is, the joint portion between the first member 221 and the second member 222 has a stepped spigot structure in cross section. In other words, the first member 221 and the second member 222 are arranged so as to overlap in the thickness direction at the joint portion, and the thickness of the first member 221 and the second member 222 at the joint portion is thin so that the thickness of the overlapping portion is approximately the same as that of other portions of the first member 221 and the second member 222.

[0047] In the rear case 22 of the blower 1, the first member 221 and the second member 222 are joined with a spigot structure as described above, so that the gap at the joint can be made inconspicuous. In addition, this spigot structure can suppress the occurrence of rattle even if there is a small gap between the first member 221 and the second member 222. This is particularly effective when the first member 221 and the second member 222 are made of resin, since manufacturing variations such as some distortion are likely to occur. Furthermore, this spigot structure can increase the strength of each end where the first member 221 and the second member 222 are joined, making them less likely to break.

[0048] As shown in Fig. 9, the edge of the first member 221 that is joined to the second member 222 is composed of vertical sides 221a and 221b and a horizontal side 221c. On the other hand, as shown in Fig. 10, the edge of the second member 222 that is joined to the first member 221 is composed of vertical sides 222a and 222b and a horizontal side 222c. The vertical sides 221a and 222a, the vertical sides 221b and 222b, and the horizontal sides 221c and 222c face each other. A recess 2214 is formed in the vertical side 221a of the first member 221, a recess 2215 is formed in the vertical side 221b, and recesses 2216 and 2217 are formed in the horizontal side 221c. A convex portion 2224 is formed on the vertical side 222a of the second member 222, a convex portion 2225 is formed on the vertical side 222b, and convex portions 2226 and 2227 are formed on the horizontal side 222c. That is, the recesses 2214 to 2217 are elongated holes, and the convex portions 2224 to 2227 are ridges extending along the elongated holes. The recesses 2214 to 2217 may be through holes or grooves having a bottom. The recesses 2214 and the convex portion 2224, the recesses 2215 and the convex portion 2225, the recesses 2216 and the convex portion 2226, and the recesses 2217 and the convex portion 2227 are formed at positions facing each other, and are fitted together when the first member 221 and the second member 222 are connected.

[0049] In this way, the first member 221 and the second member 222 are configured to have the recesses 2214-2217 and the protrusions 2224-2227, respectively, so that the positioning of both members can be easily performed. In particular, in the blower 1, the user removes the second member 222 from the first member 221 and attaches the second member 222 to the first member 221 each time, so such a configuration that allows easy positioning is effective. Even if some positional deviation occurs between the first member 221 and the second member 222, the first member 221 and the second member 222 can be easily connected by fitting the protrusions and the recesses. In particular, when the first member 221 and the second member 222 are made of resin, manufacturing variations such as some distortions are likely to occur, so this is effective. Note that the first member 221 may have a protrusion, and the second member 222 may have a recess.

[0050] In the above example, the convex portions 2224-2227 are ridges provided so as to extend along the long holes of the concave portions 2214-2217, but they may be a plurality of ridges provided along the long holes.

[0051] Fig. 12 is a cross-sectional view of the joint between the first member 221 and the second member 222 at the position BB in Fig. 4. As shown in Fig. 12, the convex parts 2224 and 2225 of the second member 222 are fitted into the concave parts 2214 and 2215 of the first member 221, respectively. The convex parts 2224 and 2225 have rounded corners and a tapered shape, and have a tapered surface. The concave parts 2216 and 2217 of the first member 221 are also fitted into the convex parts 2226 and 2227 of the second member 222 in a similar manner, and the convex parts 2226 and 2227 have a tapered shape with a tapered surface.

[0052] By configuring the convex portions 2224 to 2227 of the second member 222 to have tapered surfaces in this manner, the first member 221 and the second member 222 can be easily fitted together due to the guiding action of the tapered surfaces when fitting them together.

[0053] In addition, in the fitting structure of the recess and protrusion of the first member 221 and the second member 222, the protrusion may be press-fitted into the recess. With such a configuration, the position of the second member 222 with respect to the first member 221 becomes more stable.

[0054] As shown in FIG. 6 and FIG. 9, the first member 221 has screw holes 2218 and 2219 formed by embedding a metal nut. The nut is embedded by insert molding when the resin first member 221 is molded. As a result, the nut is embedded in the first member 221 in a state where at least a part of the surface of the nut on the side where the screw hole 2218 is formed, except for the screw hole 2218, is covered by the resin forming the first member 221. On the other hand, as shown in FIG. 6 and FIG. 10, the second member 222 has through holes 2228 and 2229 at positions facing the screw holes 2218 and 2219 of the first member 221, respectively. When the first member 221 and the second member 222 are connected, a bolt is inserted through the through holes 2228 and 2229 of the second member 222 and screwed into the screw holes 2218 and 2219 to screw them together.

[0055] In this way, the first member 221 and the second member 222 are connected by screwing the bolt and the nut, so that the connection can be stable. In addition, even if the first member 221 and the second member 222 are repeatedly attached and detached, the screw hole can be prevented from being crushed. In addition, even if vibration occurs due to the operation of the blower 1, the second member 222 can be prevented from falling off the first member 221 by screwing the bolt and the nut. Furthermore, if a nut is embedded in the first member 221 by insert molding, it is possible to prevent the connection nut from being lost. In addition, if a metal nut is embedded in the first member 221 instead of the detachable second member 222, the second member 222 can be formed only from resin. This configuration is preferable because there is no risk of rusting of the metal member even if the second member 222 is washed with water.

[0056] Although the mechanism for joining the first member 221 and the second member 222 has been described above, the present invention is not necessarily limited to this configuration.

[0057] For example, the configurations for joining or fitting the first member 221 and the second member 222 may be reversed or may be partially reversed. Specifically, a configuration in which the recesses 2214-2217 of the first member 221 and the protrusions 2224-2227 of the second member 222 are reversed, or a configuration in which two of the four protrusions are reversed may be adopted.

[0058] Incidentally, the case unit 20 is formed into a spherical shape by fitting the front case 21, into which the grill 23 is fitted, and the rear case 22 together. By making the exterior of the blower unit 2 into a spherical shape in this way, it is possible to give it a sophisticated appearance, and by eliminating the corners, it is possible to give it a more compact appearance. It is also possible to enhance the cuteness and stylishness of the appearance.

[0059] In addition, the grill 23 may be configured to support the multiple fins 24 by circular rings that intersect with each fin 24, in order to prevent fingers from getting in between the gaps between the multiple fins 24 and also to reinforce the grill 23.

[0060] A cylindrical air duct 26 is provided on the outer periphery of the grill 23. The air duct 26 is a cylindrical member provided on the circumferential outside of the fan 27, and the inner diameter of the air duct 26 is set to be approximately equal to the inner diameter of the air outlet 2a. That is, in the blower 1, the air outlet 2a of the blower section 2 is located inside the part of the grill 23 where the air duct 26 is provided. In the blower 1, the cylindrical air duct 26 is provided inside the blower section 2, thereby ensuring the directionality and linearity of the air, which are functions unique to a circulator.

[0061] The motor 28 drives the fan 27. The motor 28 includes a motor body 28a and an output shaft 28b that protrudes forward from the motor body 28a. The fan 27 is attached to the tip of the output shaft 28b. When the motor 28 is driven, the output shaft 28b rotates, thereby causing the fan 27 to rotate around the output shaft 28b.

[0062] The motor cover 29 holds the motor 28. Specifically, the motor body 28a is covered and held by the motor cover 29 with the output shaft 28b inserted into an insertion hole 291 of the motor cover 29. The first member 221 of the rear case 22 is attached in a fixed state to the motor cover 29, and the support leg 33 of the support part 3 is rotatably connected thereto.

[0063] In this way, with the motor 28 and fan 27 attached to the rear case 22 via the motor cover 29, the rear case 22 is fitted into the front case 21 in which the grill 23 is fitted, thereby forming a blower section 2 with a blowing mechanism built in.

[0064] [Support part] The support unit 3 is placed on an installation surface such as a floor surface, and a power cord 80 is attached to the support unit 3. As shown in Fig. 8, the support unit 3 includes a main body portion above which the blower unit 2 is disposed, and a pair of support legs 33 fixed to the main body portion and supporting the blower unit 2 inside the case unit 20.

[0065] It is preferable that the size of the main body of the support part 3 in a plan view is approximately the same as or smaller than the size of the blower part 2 in a plan view. In this way, the size of the support part 3 in a plan view of the blower 1 can be made approximately the same as the size of the blower part 2 in a plan view, as shown in FIG. 5, and the blower 1 as a whole can be prevented from becoming too large. If the size of the main body of the support part 3 in a plan view is made approximately the same as the size of the blower part 2 in a plan view, the blower 1 can be made smaller while preventing the blower 1 from falling over. In other words, the blower 1 can be placed more stably while making the blower 1 smaller.

[0066] 7 and 8, the main body of the support part 3 has a lower base 31 formed in a circular shape in a plan view, and an upper base 32 that can be fitted into the lower base 31. The covers that form the outer surfaces of both the lower base 31 and the upper base 32 can be made of a synthetic resin material such as polypropylene.

[0067] The main body of the support part 3 is hollow inside, and houses a circuit board, a left-right swing mechanism, and the like.

[0068] Moreover, a single-legged support part 321 is vertically erected behind the center of the cover of the pedestal upper part 32. An operation panel 323 is disposed in front of the support part 321 on the cover of the pedestal upper part 32. And above an upper surface 322 of the support part 321, blower part 2 is disposed with a gap provided between it and upper surface 322.

[0069] The operation panel 323 is provided with, for example, a power button for switching the power on and off, an air volume button for adjusting the air volume of the blower 2, and a swing button for switching left and right swing on and off.

[0070] 8, the support leg 33 is inserted into the slit 2211 of the rear case 22 and pivotally attached to the motor cover 29 so as to be rotatable in the vertical direction. The lower end of the support leg 33 is fixed to the pedestal upper part 32 of the main body part of the support part 3.

[0071] Specifically, the upper sides of the support legs 33 are connected to both sides in the width direction of the motor cover 29 via cylindrical shafts. As a result, the motor cover 29 is supported to be rotatable in the vertical direction relative to the support unit 3 while being sandwiched between the pair of support legs 33. The motor cover 29 holds the motor 28, and the fan 27 is connected to the motor 28. The motor cover 29 is also fixed to a first member 221. The first member 221 is fixed to the front case 21 and detachably connected to a second member 222. In other words, when the motor cover 29 rotates in the vertical direction relative to the support legs 33, the blower unit 2 including the motor cover 29, the motor 28, the fan 27, and the case unit 20 including the front case 21 and the rear case 22 rotates in the vertical direction relative to the support legs 33 fixed to the support unit 3.

[0072] The shaft portion connecting the support leg 33 and the motor cover 29 is preferably provided near the center of the case portion 20, which is circular in a plan view when the blower 1 is viewed from the side. This allows the blower 1 to rotate vertically around the central portion of the spherical case portion 20 as an axis.

[0073] That is, in blower 1, motor cover 29 pivotally attached to a pair of support legs 33 is rotated relative to support part 3, so that the entire blower part 2 rotates up and down relative to support part 3. At this time, support legs 33 rotate in the area where slits 2211 are formed, so the range of movement of blower part 2 in the up and down direction is determined by the length of slits 2211.

[0074] The motor cover 29 may be configured to rotate vertically relative to the support leg 33 by a motor (not shown), or may be configured to rotate vertically manually. In the configuration in which the motor cover 29 rotates vertically by a motor, in addition to the motor 28 that rotates the fan 27, a motor that rotates a shaft connected to the support leg 33 is provided.

[0075] The blower 1 is equipped with a left-right swing mechanism that swings left and right to change the blowing direction. The left-right swing mechanism includes a motor (not shown) provided inside the upper base 32. The motor of the left-right swing mechanism rotates a rotation shaft that extends in the up-down direction. The lower base 31 and the upper base 32 are connected via this rotation shaft. Therefore, when the motor of the left-right swing mechanism rotates, the upper base 32 rotates left and right relative to the lower base 31. Support legs 33 are fixed to the upper base 32, and a motor cover 29 is connected to the support legs 33. In other words, when the motor of the left-right swing mechanism rotates, the blower unit 2 rotates left and right relative to the support unit 3 to swing.

[0076] [Variations] In addition, the blower is not limited to the configuration of the blower 1 of the above-mentioned embodiment. For example, as shown in FIG. 13, the first member 221 and the second member 222 of the rear case 22 may be integrally formed and undetachable, and the rear case 22 may be detachable from the blower 1 body. In this case, the front case 21 is supported by the support legs 33 via the rear case 22, so that the front case 21 is also detachable from the body of the blower 2. In this configuration, a slit 2211 is formed so that the rear case 22 does not interfere with the support legs 33 when it is removed. For example, the lower end of the slit 2211 may be left open. With such a configuration, it is possible to remove the entire case part 20 from the support part 3 for cleaning or the like.

[0077] Also, the fan may have a configuration like fan 1A shown in Fig. 14 to Fig. 16. Fig. 14 and Fig. 15 are perspective views of a modified fan 1A, Fig. 14 being a view seen from the front and Fig. 15 being a view seen from the rear. Fig. 16 is a perspective view of fan 1A from the rear with second member 222A removed from first member 221A of rear case 22A.

[0078] In the blower 1A, the outer shell of the case part 20A is not spherical, but cylindrical with a diameter gradually increasing toward the front. The case part 20A includes a front case 21A and a rear case 22A that can be separated at a midpoint between the front and rear. The rear case 22A includes a first member 221A and a second member 222A. The second member 222A is detachably attached to the first member 221A. The first member 221A has a common configuration with the first member 221 of the blower 1, and the second member 222A has a common configuration with the second member 222A of the blower 1, except for the outer shape.

[0079] In addition, in the blower 1 of the embodiment, the slit 2211 is formed in the first member 221, but the present invention is not limited to this. The slit 2211 may be formed in the second member 222, or may be formed between the first member 221 and the second member 222. However, when the slit 2211 is formed in the second member 222, the slit 2211 needs to have an open shape so that the slit 2211 does not interfere with the support leg 33 when the second member 222 is removed from the first member 221. Specifically, the lower end of the slit 2211 extends to the edge of the second member 222, and this edge is configured to be open.

[0080] [Blower Features] Since the fan 1 described in this specification has a configuration in which the second member 222 of the rear case 22 is detachably connected to the first member 221, the second member 222 can be removed from the fan 1. This configuration makes it easy to remove dust accumulated at the air intake 22b and to clean the second member 222 by removing the second member 222.

[0081] The above is a detailed description of the embodiments and modifications of the present invention. These embodiments and modifications are merely specific examples of configurations and operations of the present invention, and the scope of the present invention is not limited to these embodiments, but is broadly interpreted to the extent that a person skilled in the art can grasp the same technical ideas. [Explanation of symbols]

[0082] 1, 1A...blower 2…Blower section 2a...Air vent 20, 20A…Case section 21, 21A…Front case 21a...Opening 22, 22A…Rear case 221…First member 2211...Slit 2212…Convex part 2213…Recess 2214~2217…Concave 2218…Screw hole 222...Second member 2222…Convex part 2223…Recess 2224~2227…Convex 2228...Through hole 22a…pier 22b...Air intake 23…Grill 24…Finn 26...Wind tunnel section 27…Fan 28…Motor 28a…Motor body 28b…Output shaft 29…Motor cover 291...Through hole 3...Support part 31…Bottom of pedestal 32…Top of the pedestal 321...Strut part 322…Top surface 323…Operation panel 33…Support leg 80…Power cord

Claims

1. a blower unit including a fan, a motor that drives the fan, a motor cover that holds the motor, and a case that houses the motor cover; A support leg connected to the motor cover; a support part that supports the blower part and is fixed to the support leg, The case portion includes a front case and a rear case that can be separated into a front case and a rear case, The rear case includes: A first member supported by the motor cover; a second member having an air intake port through which air taken in by the fan flows and being integral with the first member to form a hemispherical shape; the rear case is detachable from a main body of the blower; The rear case has a slit into which the support leg is inserted, the slit having an open lower end. Blower.

2. The second member has an open bottom shape, the first member is configured to extend into the released portion of the second member; The blower of claim 1.

3. A nut having a screw hole into which a bolt for connecting the first member to the second member is screwed is embedded in the first member, The second member has a through hole through which the bolt is inserted. The blower according to claim 1 or 2.

4. The nut is embedded in the first member such that at least a portion of a surface on which the screw hole is formed is covered with resin. The blower of claim 3.

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