GB2185531A

GB2185531A - Oscillating electrician

Info

Publication number: GB2185531A
Application number: GB08700283A
Authority: GB
Inventors: Yoshiki Hashimoto; Noriyasu Horio; Masato Ogura; Masaaki Sendo; Kinzo Suzuki
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 1986-01-20
Filing date: 1987-01-07
Publication date: 1987-07-22
Also published as: GB2185531B; SG73490G; GB8700283D0; HK102290A; HK102190A; HK76390A

Abstract

The fan comprises a main body having blades 4, an electric motor 5 and guards 1,3, a base 23 arranged below the main body and connected detachably to the main body, a support connected detachably to said main body and said base, and furthermore provided with an electric motor (47, Figure 7) in control box 12 for head oscillation in an area beneath the fan so that the head part of the electric fan occupies less room at the rear of the fan. <IMAGE>

Description

SPECIFICATION Electrician This invention relates to electric fans, and particularly a new type of electricfan being diversifiable for various usage changes, having an electric motor for head oscillation in an area other than behind a head part, an electric motor for head oscillation being fixed enabling to operate near a wall surface, and with a head oscillating device.

Figure 1 and Figure 2,for example, are an exploded perspective view and a sectional view at a cut line II - II showing a conventional electricfan publicly laid open undertheJapanese Utility Model No.52-103948.

In the drawings, the mark (a) indicates a support formed with a groove (b) to be fixed to a main body (not shown) comprised of blades an electric motor, guards and etc. in the upper part. The mark (c) indicates a switch box extended to one direction of the bottom line ofthe support (a) and the mark (d) indicates a base formed with a receptive groove (e) along the longitudinal line in the central area.

A conventional electric fan is constructed of as shown above, the switch box (c) being to be inserted to the receptive groove ofthe base (d) and the main body being fixed to the groove (b) of the support.

Usuallythere are various kinds in the electric fans such as for semi-floor type for Japanese room, desk settype and the height of support is different each dependent upon a purpose. Though there are some types of electric fans with the height adjustable for a kind of usage, their range of adjustments is limited in the extents and so it is known that each exclusive support (1 ) is necessary forthe use of semi-floortype or desk set type.

In an electric fan explained above, it has been a problem that we have to select an electric fan with a size of support specifically for a kind of purpose, such as fo r semi-floor type or desk set type, and diversion of one type for other type is not possible.

Furthermore, it has been another problem that it is not possible to reduce production cost of various parts by commonizing their sizes and increase production efficiency.

Avertical section view ofa head partofFigure3 shown in the Japanese Patent Laid Opened No.

57-34477 is known today.

In the drawing, (91) indicates a head part having a front cover (91 a) and a back cover (91 b), (92) indicates an electric motor for blades housed in the interior of the head cover (91 ), and blades (not shown) are connected to an axle (92a). (93) indicates an spindle fixed to the electric motor for blades (92), extended downward and received pivotally byway of a neckpiece (not shown), (94) indicates a plate fixed to the back portion ofthe electric motor for blades (92) and the back cover (91 b), (95) indicates an electric motorfor head oscillation fixed to the plate (94) and an axle (95a) protrudes downward from it.

(96) indicates a crank fixed to the axle (95a) and (97) indicates an head oscillation rod rotatably held by the crank (96).

As a conventional electric fan is constructed as above, an electric motor for head oscilation is arranged behind an electric motorfor blades and the known head oscillation device is made up of such construction as the rotational movement is transmitted to the axle (95a), the crank (96) and the head oscillation rod (97).

Consequently, in a conventional electric fan, due to the arrangement of an electric motor for heas oscillation behind an electric motor for blades, the shape of the head part ofthe electric fan protrudes backward, which requires larger packing form, also.

It makes difficultto operate it near a wall surface also. Another inconvenience such as requiring a larger space has been a problem, also.

This invention is made to solve above problems and a first object of thins invention is to provide an electric fan improved and capable of using one type for semi-floor, desk set, and floortype purpose, and enable to increase production efficiency by commonizing various parts.

This invention is made to solve above problems and a second object of this invention is to provide an electric fan without a head part protruding backward, with a small packing size, usable near a wall surface, and could be stored in a small space.

The electric fan ofthis invention, basically comprises a main body having blades, electric motors and guards, a base connected detachably to the main body arranged downward ofthis main body, and a support connected detachably to the main body and the base.

Accordingly in this invention, because of being connected detachably directly or indirectly to the main bodyandthebase,thewholeheightofthe electric fan could be lowered by directly connecting the main body and the base, while connecting both via this support makes a higher height.

Furthermore, the electricfan of this invention is a typethatan electric motor for head oscillation is provided in an area otherthan behind the back part of an electric motor for blades, a L-shaped support with head oscillation by an electric motor for head oscillation is provided, a lower member of the fan supports the lower part of the support and the support supports the electric motor for blades in the upper part.

Consequently according to this invention, no such a casethata head partwould protrude backward due to a provision ofthe electric motor for head oscillation in an area behind the electric motorfor blades.

Furthermore, said head oscillating device described in this invention supports a head part having an electric motorfor blades in the upper area of a L-shaped support,the lower part of the support being fixed rotatablyto a lower member, in the lower part ofthe support, an electric motorfor head oscillation being provided, to the support, head oscillation movement being transmitted to.

Accordingly, due to construction of an electric motor for head oscillation provided in the lower part ofthe support supporting the head part, the head part does not protrude backward.

In the following explanation on embodiments of this invnetion will be madetogetherwith the accompanying drawings.

Referring to the drawings, Figure 4 indicates a front view of an electric fan for Japanese tatami room (semi-floor height), Figure 5 indicates a right side view of Figure 4, Figure 6- Figure8 indicate a whole exploded perspective view showing every - construction, Figure 9 indicates an exploded perspective view of a head oscillation device, Figure 10 indicates a vertical section view of a part connecting a support, Figure 11 indicates a front view of a desk set type electric fan, Figure 12 indicates a rightsideview, Figure 13 and Figure 14 indicate perspective views expiaining how they are assembled, Figure 15 indicates a top view of packing form, Figure 16 indicates a vertical side view of Figure 15, Figure 17 indicates a perspective view of Figure 15, Figure 18 - Figure 20 showanother embodiment on head oscillation device of an electric fan, Figure 18 indicates a side section view, Figure 19 indicates the back view, and Figure 20 indicates an exploded perspective view of the major parts of said electric fan.

To start with, the overall structure of an electric fan will be explained referring to one example of embodiments along Figure4to Figure 10.

In Figure 4 and Figure 5, (1) indicates a front guard, (2) indicates a guard ring forming a periphery ofthe front guard (1). (3) indicates a rear guard matched to thefrontguard (1), (4) indicates blades housed in the inside of the front guard (1) and the rear guard (3), (5) indicates an electric motor for blades driving the blades (4), and thus a head partofan electricfan is comprised by said (1) - (5). (7) indicates a rear cover covering a L-shaped support (35) supporting an electric motor (5) for blades in its upper part, (8) is a handle fixed to the upper part ofthe support (35), (9) indicates a neckpiece hold rotatablythe lower part of the support (35), (10) indicates a holding piece fixed movably upward or downward to the neckpiece (9) and preventing the lower part of guarding (2) from getting offforward, (11) indicates a neckpiece cover housing a neckpiece (9), (12)indicates a control box arranged downward ofthe neckpiece cover (11), (13) indicates its case, 14 indicates a cover covering the case (13), (15) indicates an ornamental panel arranged in front of the control box (12) and on which a push button switch (16) is arranged, (17) indicates a knob setting up time on a time switch (61) explained later, and thus the main body (18) of an electric fan is constructed ofthe head part (6) and said (7) - (17) above. (19) indicates a support, (20) indicates a tube forming a major part ofthe support and the upper part being connected to the lower part of the control box (12) by a screw(21), and its lower part is connected to a base (23) by a fixing screw (22). (26) indicates a cord going out backward through a bottom plate (24) and the tube (20) supplying electric powerto an electric motor (47) for head oscillation and the electric motor for blades (5).

In Figure 6-Figure 10, (31) indicates a guard mark, which is fastened to the central area ofthe front guard (1) by a screw (32). (33) indicates a nutto fix the blades (4) to the electric motor for blades, (34) indicates a plateforfixing the electric motor, through which plate (34) the electric motor for blades (5) being fastened to the rear guard (3) by a screw (5A).

(35) indicates a L-shaped supportto which upper part the back side ofthe rear guard (3) is fixed, the lower part ofthe support being fixed to the neckpiece (9) by a screw (36) and covered by being fastened with the rear cover (7) by a screw (37). (38) indicates a depression and elevation angle adjustment plate and is fixed rotatably to the lower part of the neckpiece (9) by a bolt (39) and nut (40). (41) and (42) indicate respectively a twisted spring and a spring holding plate stored in the neckpiece (9) giving recovering forces to the neckpiece (9) connected to the depression and elevation angle adjustment plate, (43) and (44) are respectively a pressing spring and balls stored in the lower part of the neckpiece (9) selecting a position which determines a depression and elevation angle ofthe neckpiece (9) by working with the depression and elevation angle adjustment plate (38), (45) indicates a spindle fixed to the depression and elevation angle adjustment plate (38) and extended downward, (46) indicates a screw fixing the neckpiece (9) to the neckpiece (11), (47) indicates an electric motor for head oscillation fixed inside the case (13) via supporting plate (48) by a screw (49), a crank (50) is fixed to the axle by a pin (50a), a rod (51) is rotatably fixed to the tip ofthe crank (50) by a screw (53) through a washer (52). (54) indicates an axle tube supporting the spindle (45) inserted in the case (13), (55) indicates an arm with one end inserted by the spindle and the other end fixed rotatably to the end of the rod (51), (56) indicates a clutch fixed to the lower area ofthe depression and elevation angle adjustment plate (38), housing a pressing spring (57) and a ball (58) inside, and housed in the inside of a cavity of the arm (55) connected frictionally to the arm (55) by the pressing spring (57). (59) indicates a condensorto be screwed by a screw (60), (61) indicates a time switch controlled by the knob (17), and thus (47) - (61) are stored in the inside of the case (13). (62) indicates an E-ringforstopping coming off being inserted to the tip of the spindle (45), (63) indicates a screw-fixing the push button switch (16) to the ornamental panel (15), (64) indicates, as shown in Figure 10, a tube holder formed with a conical concaved surface (64a) matching to a conical convexed surface (1 3a) formed in the lower part ofthe case (13) in its upper area and having a female thread (64b) in its down area, and having an uneven surface (64c) and a groove (64d) in the upper peripheral surface and having a hole (64e) in the lower edge area, (65) indicates a spring pressing plate fixed in the lower part of the case (13) by a screw (66), (67) indicates a pressing spring pressed in by the pressing plate (65) and pressing a ball (68) placed in front ofthe edge ofthe spring to an uneven upper peripheral surface (64c) ofthetube holder (64), and thus a duplicate head oscillation device is constructed by said (64c), and (65) - (68).

(69) indicates a cover arranged in the upper inside of the tube (20), (70) indicates a guide piece connecting the cover (69) and the tube (20), (71) indicates a fixing plate guided by the guide plate (70) and with thetip of the screw (21) screwed into, (72) indicates an E-ring inserted to the tip ofthe screw (21), (73) indicates a pressing spring provided with the screw (21) and arranged between the tube (20) and afixing plate (71), (74) indicates a tube holder fixed in the lower inside of the tube (20) as shown Figure 8 and having in the inside the female thread same as that of the tube holder (64), and (75) indicates a cord case cover provided on the lower surface of the bottom plate (24).

In an electric fan constructed above, on electricity being applied to the electric motor for blades (5),the electric fan start rotating the blades (4) and sending airthroughthefrontguard (1).

On the other hand on electricity being applied to the electric motor for head oscillation, the crank (50) rotates and the rod (51) makes reciprocating movement, and this movement is transmitted to the arm (55). Thus, the arm (55) makes titubation movement at the center of the axis, and makes the spindle (45) connected to the arm (55) by way ofthe clutch (56) and the support (35) bywayofthe neckpiece (9) titubate. The head part (6) oscillates thisway. Furthermore, when the main body (18) is horizontally moved, since the ball (68) rolls on the uneven surface (64c) of the tube holder (64) and stops at the place desired, oscillation movement starts at this point making so-called duplicate head oscillation.Furthermore, when the head part (6) is tilted forward or backward, the neckpiece (9) could be held at any desired position by the appropriate recovering forces of the twisted spring and the depression and elevation angle adjustment plate and the function of the pressing spring and balls.

Though the above is a construction of semi-floor type, this could be used for desk set type by taking the main body (18) offthe tube (20), and connecting the main body (18) to the base (23) directly. The attaching and detaching process ofthistube (20) is explained in the following.

Firstofall, as shown by a straight line in Figure 10, after a fixing plate (71) being placed apart from the inside wall ofthetube (20), the lower end ofthetube holder (64) held to the main body(18) bythegroove (64d) and the screw (66) matching is to be inserted to the upper portion ofthetube (20). As the screw (21) is rotated, the fixing plate (71) moves to the right side being guided by the guide piece and the end ofthe fixing plate (71) fits to the hole (64e) ofthe tube holder (64) as shown buy a broken line. This way, by the tube holder (64) being fixed to the tube (20), upward coming offoftheelectricfanwill bestopped.

The handling procedurefortaking offthe main body will be in the reverse manner. Aftertaking offthe tube (20), by inserting the tube holderto the holeof the base directly and screwing thetubefixing screw to the female thread (64b) of the tube holder (64), we could use the electric fan for desk set type as shown in Figure 8 and Figure 9.

Furthermore, the cord (26) could be taken outside ofthetubeholder(64)throughthesupport(19)and the base (23).

On the other hand, packing of the disassembled parts before assembly is done as shown in Figure 15 - Figure 17. That is, the main body (18), the support (19) and the base (23) separated from a whole unit will be stored in the inside of an outer case (81) together with packing materials.

This time it is possible to use a smaller outer case (81) by packing them closely since the shape ofthe main body is different from a conventional shape and not part is protruding backward from the head part (6).

In addition to the example that one product could be used for two type purposes such as semi-floor type and desk set type by the use or not use ofthe support (19), the product could be further used for floortype purpose and for othervarious usages.

Next, Figure 18 - Figure 20 indicate another embodiment provided with another type of head oscillating device that is of an electric motor for head oscillation (47a) provided in the inside of a support (35a), not in the inside of a control box (13),and Figure 18 is a side section view, Figure 19 is a back view, and Figure 20 is an exploded perspective view.

The upper part of a support (35a) is fastened to a rear guard (3) by a screw (76) and in the lowerparta spindle (45a) extending to the lower part is fixed to a screw (77) prevents the support (35a) from coming off. The neckpiece (9a) is inserted to a cut (79) ofthe upper part of a base (78) and held rotatably by a pin (80). (81) indicates a screw to select a position for a depression and elevation angle ofthe neckpiece (9) by pressing the inserted part ofthe neckpiece (9) inserted to the base (78). An electric motor for head oscillation (47) is fixed in the interior of a support (35a) and one of the ends of a crank is fixed to the axle.The other end of the crank (50a) is connected rotatably to one of the edges of a rod (51 a) by a screw (83) and an E-shaped ring inserted into the edge.The other end of the rod (51 a) is connected rotatably to an arm (86) projecting sideway from the neckpiece by a screw (85). A head oscillating device comprising an electric motor for head oscillation (47a), a crank (50a), a rod (51 a) and etc. is stored in the inside of a support (35c) and in the backward of the support (35c) a rear cover (89) is fastened by a screw (90) and in the front part, a front cover (89b) covers the front area.

In otherwords,the head oscillating device is almost same as the previous embodiment, that the crank(50a) rotates by the rotating of an electric motor for head oscillation (47a), and by the reciprocating movement ofthe rod (51 a) the support (35a) makes oscillating movement at the center of the spindle (45a). Thus it is possible to have a function same as the previous embodiment.

As explained above, this invention has such advantages that the type of the electric fan could be used forthe different purposes, that is, semi-floor type, desk set type, floor type and etc. due to a construction that comprises a main body having blades, an electric motorfor blades, and a guard, a base provided downward connected detachably to the main body, effecting that higher production efficiency could be realized by commonizing the parts and sizes of packing cases could be smaller.

As explained above, this invention has another advantages that a construction that an electric motor for head oscillation is provided in an area otherthan the one behind an electric motor for blades and a L-shaped support oscillating by the electric motor for head oscillation is provided, having the lower part of this support supported by a lower member and supporting an electric motor for blades in the upper area, eliminates a head part protruding backward, makes the size of package form smaller, enables its operation near a wall surface, and enables its storage in a smallerspace.

As explained above, this invention has another advantage that a construction that a L-shaped supportsupporting in the upper area a head part having an electric motor for blades, the lower part of the support being held rotatably by a lower member, an electric motor for head oscillation being provided in the lower area of this support, head oscillation being transmitted to the support, eliminates a head part protruding backward, makes the size of package forms smaller, enables its operation near a wall surface, and enables its storage in a small space.

Claims

1. An electric fan comprising : a main body provided with a head part having a plurality of blades, an electric motor for blades, and a set of guards housing said parts, a neckpiece, an electric motor for head oscillation and a control box in a downward area below said head part; a base detachably connectable directly to the lower part of the main body; and a support provided between said main body and said base with the upper part and the lower parteach detachably connectabletosaid main body and said base respectively.

2. An electricfan as claimed in claim 1 in which the support is made of a tube with the upper part of the tube being connected to the lower part ofthe control box of said main body by a screw and the lower part of the tube being connectedtothe base by a tu be fixing screw.

3. An electric fan comprising : a main body provided with a head part having a plurality of blades, an electric motor for blades, and a set of guards housing said parts, arranged with a neckpiece, a control box and an electric motor for head oscillation provided in an area otherthan the one behind the electric motorfor blades in a downward area below said head part and the main body being provided with a support formed almost in an L-shape and with the lower part supported by said control box driven by said electric motorfor head oscillation with said electric motor for blades being su pported at the upper in ner side.

4. An electric fan as claimed in claim 3 in which the supporttitubates and oscillates the head part by the electric motor for head oscillation via a transmission device.

5. An electricfan comprising : a main body provided with a head part having a plurality of blades, an electric motorforblades and a set of guards housing said parts, arranged with a neckpiece and a control box in a downward area below said head part and provided with a support formed almost in a L-shape with said head part being supported at the upper inner side with the lower part being held rotatably by said control box and the main body being provided with an electric motorfor head oscillation provided in the lower part of said support transmitting head oscillation movementto said support.

6. An electricfan as claimed in claim 5 in which the supporttitubates and oscillates the head part by the electric motor for head oscillation via a transmission device.

7. An electric fan, su bstantially as herein before described with reference to Figures 4 to 10 of the accompanying drawings.