CN2356171Y

CN2356171Y - Electric fan

Info

Publication number: CN2356171Y
Application number: CN 98244904
Authority: CN
Inventors: 黄国镇
Original assignee: 黄进成
Priority date: 1998-10-16
Filing date: 1998-10-16
Publication date: 1999-12-29
Anticipated expiration: 2008-10-16

Abstract

The utility model relates to an electric fan. A fan body is erected on a base, and the fan body can rotate on the base under the control of an eccentric swing mechanism. The utility model is characterized in that the utility model also comprises an inner ring frame which is used for sheathing and surrounding the casing periphery of the fan body, and the inner ring frame is extended with two butted scarf joint parts to hold the casing of the fan body. After the casing of the fan body is held, the fan body can rotate taking the two scarf joint parts as pivots. The outer side of inner ring frame is provided with an outer ring frame, the outer ring frame is erected on the base, is provided with an inner ring wall, and is sheathed at the periphery of the outer ring wall of the inner ring frame. The inner ring frame and the fan body are combined, can do a rotation relative to the outer ring frame, and the directions of rotation and blowing of the fan body and be altered.

Description

Electric fan

The utility model relates to a kind of electric fan, and relating in particular to a kind of utilization can be connected fan body and pedestal by counterrotating inner and outer rings frame, the electric fan of rotation wind direction when changing the fan body air-supply with this.

The prior art electric fan roughly is directly to set up a fan body on a pedestal top in design; for the wind energy that fan body is sent enough is sent to different orientation in response to needs; the Height Adjustment mechanism of adjustment height can be set on pedestal usually; the aligning elevation gear that can change luffing angle is set between pedestal and fan body; it can pedestal be the beat mechanism that fulcrum horizontally rotates that fan body inside installs one again; by the cooperation of aforementioned each mechanism, the wind energy that makes electric fan send is enough adjusted height, luffing angle and horizontal position.

Though the prior art electric fan need be provided with several regulating mechanisms in response to each orientation in design, but its air supply mode still can't satisfy the popular needs of consumption in use, for example: when the user is sitting in when handling official business on the office chair, though can adjust the height and the orientation of air-supply by height and aligning elevation gear, but the angle of adjusting the back air-supply is confined to certain position, can't fill the parts of body that allows of part and experience cool breeze, though and electric fan has the function of rotation air-supply, but the direction of rotation air-supply only is confined to substantially horizontal, therefore, both feet may be awfully hot when air-supply is adjusted to above the waist, if will fan net presses to foot, that petty upper part of the body blows again less than wind, supposes in the occasion of using, user necessary one sits, one the station work the time, single electric fan also can't satisfy two users' needs simultaneously; The reason that produces aforesaid drawbacks is that general fan body is merely able to horizontally rotate wind is sent, and can't send with diagonally opposing corner orientation or vertical orientations rotation, and the utility model is exactly to improve at the aforesaid drawbacks that is present in for a long time on the electric fan.

Main purpose of the present utility model is that a kind of improved electric fan is being provided, the orientation of air-supply when it can change rotation arbitrarily.

The purpose of this utility model is achieved in that

A kind of electric fan, this electric fan is to set up a fan body above a pedestal, this fan body is installing one motor in a shell, this motor has a running shaft and rotates with transmission one flabellum, at the fan net of shell the place ahead assembling one coating flabellum, the position installs one again in the enclosure of fan body can drive the beat mechanism that fan body rotates; Be characterized in that this electric fan also comprises: an inner ring frame, this inner ring frame cover is trapped among the shell periphery of fan body, extend the shell of the interlocking portions of two butt joints with the clamping fan body on it, it is the fulcrum rotation that clamping aft-fan body is able to two interlocking portions, in the outside of inner ring frame and form an external annulus; With an outer shroud frame, this outer shroud framework is located on the pedestal, and it has an internal ring wall, and above-mentioned internal ring wall also is linked in the external annulus periphery of inner ring frame; Described inner ring frame and fan body combine and with respect to the rotation of outer shroud frame, can change the direction of fan body rotation air-supply.

In above-mentioned electric fan, wherein, described this inner ring frame is to be formed by a preceding frame circle and after-frame circle tandem docking, and is affixed by the number screw rod between the two.

In above-mentioned electric fan, wherein, described this outer shroud frame be by a upper frame bar of semicircular in shape and once moulding dock up and down and form, between the two by the two screw rods Joint.

In above-mentioned electric fan, wherein, describedly should interlocking portion be provided with opening draw-in groove in opposite directions, and the outstanding all right one way or the other locating flange of inlay card in two draw-in grooves respectively on the shell of fan body.

In above-mentioned electric fan, wherein, have the fork of two correspondences on described this pedestal, on each fork, form the tank of a circle respectively, can tank be the inlay card piece of fulcrum rotation and give prominence to two on the outer shroud frame.

In above-mentioned electric fan, wherein, be equiped with a positioning block in the tank of described this pedestal, on one first groove of positioning block, the steel ball that a perseverance is shored by a spring is set, and the position corresponding to aforementioned positioning block is embedded a buckle on the inlay card piece of outer shroud frame, also laying most on this buckle can be embedded in by steel ball card on the positioning hole of buckle for the positioning holes of steel ball inlay card, comes to stand surely the combination angle between outer shroud frame and crotch.

In above-mentioned electric fan, wherein, an outstanding confinement block on the internal ring wall of described this outer shroud frame, and an outstanding appearance pearl seat on the external annulus of inner ring frame, this confinement block is resisted against and holds by the pearl seat, with rotatable angle between restriction inner and outer rings frame.

In above-mentioned electric fan, wherein, lay most hole clippings on the internal ring wall of described this outer shroud frame, and assemble a steel ball that shored by a spring corresponding to the position of hole clipping on the inner ring frame, this steel ball card is embedded in the hole clipping, can locate the deflection angle of inner ring frame and fan body.

The utility model electric fan is owing to install an inner ring frame and an outer shroud frame additional between its pedestal and fan body, and the outer shroud frame is combined on the pedestal, and inner ring frame and fan body combine, interlock, by the relative rotation of inner ring frame on the outer shroud frame, the orientation of air-supply in the time of can making the fan body that can only horizontally rotate air-supply originally can change rotation arbitrarily thus.

By the description of following some embodiments to the utility model electric fan, can further connect the purpose of this utility model, specific structural features and advantage in conjunction with its accompanying drawing.Wherein, accompanying drawing is:

Fig. 1 is the three-dimensional appearance structural representation according to an embodiment of the electric fan that the utility model proposes.

Fig. 2 is according to the three-dimensional decomposition texture schematic representation of an embodiment's of the electric fan that the utility model proposes portion of element.

Fig. 3 is according to the corresponding three-dimensional decomposition texture schematic representation between shell and inner ring frame among the embodiment of the electric fan that the utility model proposes.

Fig. 4 is the perspective view according to beat mechanism among the embodiment of the electric fan that the utility model proposes.

Fig. 5 overlooks the movement structure schematic representation according to beat mechanism among the embodiment of the electric fan that the utility model proposes.

Fig. 6 is according to the surface structure schematic representation after the adjustment angle among the embodiment of the electric fan that the utility model proposes.

Fig. 7 is the three-dimensional appearance structural representation according to another embodiment of the electric fan that the utility model proposes.

As shown in Figure 1, 2, an embodiment of the utility model electric fan comprises: a pedestal 1, a fan body 2, an inner ring frame 3 and an outer shroud frame 4, in fan written or printed documents 2, more assemble a beat mechanism 5; Wherein:

This pedestal 1, has a foot rest 11 that can firmly be seated in the plane, this foot rest 11 is to be provided with a pole 112 in the support of a pin frame 111 central authorities, these pole 112 tops form the pin-joint part 113 that a diameter dwindles, on the pin-joint part 113 and set up a crotch 12,, can reach the purpose of adjusting height by the control of a control knob 121, but it is identical with general electric fan highly how it adjust, and the emphasis that is not this case improvement does not describe in detail at this; And this crotch 12 is to pitch frames 122 butt joints by two of tandem docking to form, the butt joint back forms two upwardly extending forks 123 on two crotch 12, two forks, 123 tops form the pin-joint part 124 of a circle respectively, be respectively equipped with a circular tank 125 on each pin-joint part 124, assemble a positioning block 126 respectively in each tank 125, on positioning block 126, be provided with first groove 127 of two correspondences, the steel ball 129 that assembling one spring 128 and is shored by spring 128 in one first groove 127 in each positioning block 126.

Please cooperate referring to Fig. 2, shown in 3, this fan body 2, has a shell 21, this shell 21 is to be formed by a front shroud 211 and a back cover 212 tandem dockings, the butt joint back forms the room 213 of a hollow on shell 21, assembling one motor 22 in the room 213, this motor 22 has a running shaft 221, this running shaft 221 forms a pivot end 222 to the end that front shroud 211 extends, this pivot end 222 and and a flabellum 23 (see figure 1) combinations, it forms a worm screw portion 223 to the end that back cover 212 extends, set up one again is positioned at and is installed in seat 20 below the worm screw portion 223 in motor 22 rear ends, in order to reach purpose of safety, front shroud 211 the place aheads installing one coats fan net 24 (see figure 1)s of flabellum 23; This shell 21 should be in formation one perforation 214 out of the ordinary of forward and backward cover top, 211,212 docking site and bottom again, the outwards outstanding respectively loop mapping bead 215 of two perforation, 214 aperture peripheries, above back cover 212, offer always to through hole 216, a curve bath 217 is offered by the below in forward and backward cover 211,212 docking sites.

This inner ring frame 3 is set in the periphery of shell 21, and it is that preceding frame circle 31 and one after-frame circle 32 tandem dockings by a circle form, and again by number screw rod 30 Joints, the butt joint back forms an external annulus 33, an internal ring wall 34 and an inner via hole 35 on pedestal between the two; Wherein, these external annulus 33 tops, the distinctly outstanding appearance pearl piece 331 in position, bottom, on each appearance pearl piece 331, form the appearance hole of bead 332 that opening deviates from external annulus 33 respectively, the position below the appearance hole of bead 332 in more install a spring 333 and a steel ball 334, at the two outstanding respectively blocks 335 of dual-sides that hold 331 of pearl pieces; And extend on the internal ring wall 34 two be separated by 180 degree and and hold the interlocking portion 341 of pearl piece 331 correspondences, form opening draw-in groove 342 in opposite directions in each interlocking portion 341, location bead 215 inlay cards for shell 21, below draw-in groove 342 other form again always to limiting holes 343, be positioned at a raceway 344 be set on the internal ring wall 34.

This outer shroud frame 4, be used for inner ring frame 3 and fan body 2 are erected on the pedestal 1, its be by a upper frame bar 41 and once moulding 42 dock up and down and form, between the two by two screw rods 40 Joints, the butt joint back forms an external annulus 43, an internal ring wall 44 and an accessibke porosity 45 on pedestal; Wherein, these external annulus 43 tops project upwards an inverted U-shaped carrying handle 431, the conglobate inlay card piece 46 in an outstanding respectively butt joint back in the pedestal both sides, this two inlay cards piece 46 can be fastened on respectively in two tanks 125 of crotch 12, two inlay card pieces, 46 outer side surfaces that form by the circular block butt joint of two halves more respectively button establish a buckle 47, on the above-mentioned buckle 47 and wear one the ring with first groove, 127 corresponding positioning hole 471, the inlay card piece 46 that forms in conjunction with positioning block 126 and butt joint by crotch 12, buckle 47, the three is fitted, outer shroud frame 4 after the combination more can crotch 121 on two tanks 125 be the fulcrum rotation, between the two again with the change of corresponding relation on steel ball 129 and the positioning hole 471, in adjusting, outer shroud frame 3,4 angles; The position is provided with most and can supplies the hole clipping 441 of steel ball 334 engagings on the internal ring wall 44 of following moulding 42 again, the outstanding confinement block 442 in the position of corresponding upper frame bar 41 on outer shroud frame 4, be resisted against appearance pearl piece 331 sides by confinement block 442, limit the angle of swing of inner ring frame 3, twine because of rotation to avoid electric wire with respect to outer shroud frame 4.

Please cooperate referring to shown in Fig. 3,4, this beat mechanism 5 is assembled in being installed on the seat 20 of fan body 2, and it comprises: a driving gear 51, a driven gear 52, swing sheet 53, a connecting piece 54 and a controlling rod 55; Wherein, driving gear 51 has one can be entangled 511, the first tooth portions of the first tooth portion, 511 bottoms of closing with the worm screw portion 223 of running shaft 221 and be provided with coaxial and second a tooth portion 512 that the number of teeth is less, and its top is directly to extending a main shaft 513; And driven gear 52 is to be plugged in to be installed on the seat 20, and be positioned at the below of worm screw portion 223, above-mentioned driven gear 52 has one can entangle the 3rd tooth portion 521 of closing with the second tooth portion 512, give prominence to a coaxial extension rod 522 in the 3rd tooth portion 521 bottoms, above-mentioned extension rod 522 bottoms are installed on the fixed end 531 of swing sheet 53, swing forms a free end 532 that can fixed end 531 rotates for fulcrum on the sheet 53 again, this free end 532 and and a pivot end 541 of connecting sheet 54 be articulated, form one away from pivot end 541 1 ends on the above-mentioned connecting sheet 54 and be plugged in the interior restriction end 542 of inner ring frame 3 limiting holes 343; Control the state of closing of entangling of 52 of driving gear 51 and driven gears for convenience, socket controlling rod 55 on the main shaft 513 of driving gear 51, this controlling rod 55 also protrudes in through hole 216 tops of fan body 2.

Please cooperate referring to shown in Fig. 1,4, the beat mechanism 5 of present embodiment is under the state that draws on controlling rod 55 quilts, this driving gear 51 is controlled in the driving meeting of bar 55 and moves, the

second tooth portion

512 and 521 in the 3rd tooth portion can break away to entangle and closed this moment, and the rotating power of running shaft 221 also can't be delivered on the driven gear 52 by driving gear 51, that is to say that at this time the rotation of running shaft 221 can't act on beat mechanism 5, whole fan body 2 can only be blown but can't be horizontally rotated.

Please cooperate referring to shown in Fig. 3,4,5, when controlling rod 55 is pressed down and when driving driving gear 51 and moving down, the first tooth portion 511 of driving gear 51 can entangle mutually with worm screw portion 223 and close, the second tooth portion 512 also can entangle mutually with the 3rd tooth portion 521 of driven gear 52 and close; When running shaft 221 rotations, its power is driven driven gear 52 rotations indirectly; In rotation, fixed end 531 and driven gear 52 Joints by what swing sheet 53, therefore, the free end 532 of swing sheet 53 can be the fulcrum rotation by fixed end 531, and because free end 532 and connecting sheet 54 articulate, and the restriction end 542 of connecting sheet 54 passes the curve bath 217 of shell 21, and plug and be limited in the limiting holes 343 of inner ring frame 3, therefore, in swing sheet 53 beats, because 542 restricted can't displacements are held in the restriction of connecting sheet 54, whole fan body 2 can only be the fulcrum rotation with two interlocking portions 341 of inner ring frame 3, and the purpose of the rotation air-supply that is up to the standard thus that is to say, be subjected to pining down and have only swing sheet 53, to impel fan body 2 rear ends (being exactly the position of assembling beat mechanism 5) swing in rotation; The structure and the general electric fan of aforementioned levels rotation air-supply are roughly the same, below repeat no more

See also shown in Fig. 1,2,5, the outer shroud frame 4 of present embodiment is owing to pass through two inlay card pieces, 46 inlay cards in the tank 125 of crotch 12, fasten with buckle 47 and steel ball 129 between the two, therefore, the fan body 2 that is erected at outer shroud frame 4 just can be adjusted luffing angle for fulcrum by two tanks 125, and its height can be adjusted by

foot rest

11 and 12 of crotch; When the controlling rod 55 of beat mechanism 5 by drawing up, and flabellum 23 is when being started by motor 22, can drive whole fan body 2 is that fulcrum horizontally rotates with two interlocking portions 341 on the inner ring frame 3; That is to say, the line that the angle meeting of fan body 2 rotations and two interlocking portions of inner ring frame 3 are 341 is perpendicular, and since 341 lines of two interlocking portions of inner ring frame 3 shown in Figure 1 and pole 112 linearly, therefore, the sense of rotation of this fan body 2 is and the vertical line of pole 112 level mutually.

See also shown in Fig. 2,6, when present embodiment will change the angle of fan body 2 air-supply swings, be that hand steered fan body 2 also rotates, when rotated because fan body 2 is inlay cards in 341 in two interlocking portions of inner ring frame 3, therefore, Power of Spin can cause inner ring frame 3 and fan body 2 together in 44 rotations of internal ring wall of outer shroud frame 4; That is to say, line and 112 of the poles of adjusting 341 in back two interlocking portions can present orthogonal state, and controlling rod 55 is also partially in a side, therefore, when the running shaft 221 of motor 22 is driven once again, though the line that the still vertical what two interlocking portions of the sense of rotation of this fan body 2 are 341, but because inner ring frame 3 has been rotated the vertical line that the line that causes 341 in two interlocking portions no longer is parallel to pole 112, therefore, the direction of fan body 2 rotation will be by horizontally rotating originally, be transformed into the air supply direction of the reciprocal beat in above and below, as for its skew angle number and fan body 2, inner ring frame 3 is with respect to the angle of swing of outer shroud frame 4 and decide; In like manner, when fan body 2 and inner ring frame 3 are rotated, and when making the line of 341 in two interlocking portions be inclined to the vertical line of pole 112, the sense of rotation of fan body 2 can present the upper left side and the lower right back and forth rotates air-supply.

It is above-mentioned that the upright fan that stands in ground designs in order supportting for the utility model one embodiment, and another embodiment of present embodiment is for can use on desk fan, see also Fig. 7, the electric fan 8 of present embodiment also has a pedestal 81, assembling one outer shroud frame 82 on this pedestal 81 tops one crotch 811, establish an inner ring frame 83 for 82 armfuls at the outer shroud frame, this inner ring frame 83 also is halved together fixing with a fan body 84; Change by previous constructions, can make table type electric fan 8 have the function that changes the rotation air supply direction equally, in sum, the utility model electric fan installs an inner ring frame and an outer shroud frame additional between its pedestal and fan body, and the outer shroud frame is combined on the pedestal, and inner ring frame and fan body combine, interlock, by the relative rotation of inner ring frame on the outer shroud frame, the fan body that can only horizontally rotate air-supply originally is able to along with the inner ring frame rotation, and the generation diagonally opposing corner, the rotation air-supply of direction such as vertical, the wind direction of its crooked mode then can be adjusted the relative position between inner ring frame and outer shroud frame according to need; The improvement of above-mentioned structure not only is unprecedented innovation in like product, more can therefore reach the purpose of any change rotation wind direction, makes electric fan even more ideal in the use, so the utility model is the electric fan of a novelty, practicality really,

Claims

1, a kind of electric fan, this electric fan is to set up a fan body above a pedestal, this fan body is installing one motor in a shell, this motor has a running shaft and rotates with transmission one flabellum, at the fan net of shell the place ahead assembling one coating flabellum, the position installs one again in the enclosure of fan body can drive the beat mechanism that fan body rotates;

It is characterized in that this electric fan also comprises:

One inner ring frame, this inner ring frame cover is trapped among the shell periphery of fan body, extends the shell of the interlocking portions of two butt joints with the clamping fan body on it, and it is the fulcrum rotation that clamping aft-fan body is able to two interlocking portions, in the outside of inner ring frame and form an external annulus; With

One outer shroud frame, this outer shroud framework is located on the pedestal, and it has an internal ring wall, and above-mentioned internal ring wall also is linked in the external annulus periphery of inner ring frame;

Described inner ring frame and fan body combine and with respect to the rotation of outer shroud frame, can change the direction of fan body rotation air-supply.

2, electric fan as claimed in claim 1 is characterized in that: described this inner ring frame is to be formed by a preceding frame circle and after-frame circle tandem docking, and is affixed by the number screw rod between the two.

3, electric fan as claimed in claim 1 is characterized in that: described this outer shroud frame be by a upper frame bar that is semicircle and once moulding dock up and down and form, between the two by the two screw rods Joint.

4, electric fan as claimed in claim 1 is characterized in that: describedly should interlocking portion be provided with opening draw-in groove in opposite directions, and the outstanding all right one way or the other locating flange of inlay card in two draw-in grooves respectively on the shell of fan body.

5, electric fan as claimed in claim 1 is characterized in that: having the fork of two correspondences on described this pedestal, form the tank of a circle respectively on each fork, can tank be the inlay card piece of fulcrum rotation and give prominence to two on the outer shroud frame.

6, electric fan as claimed in claim 5, it is characterized in that: be equiped with a positioning block in the tank of described this pedestal, on one first groove of positioning block, the steel ball that a perseverance is shored by a spring is set, and the position corresponding to aforementioned positioning block is embedded a buckle on the inlay card piece of outer shroud frame, also laying most on this buckle can be for the positioning hole of steel ball inlay card, be embedded in by steel ball card on the positioning hole of buckle, locate the combination angle between outer shroud frame and crotch.

7, electric fan as claimed in claim 1, it is characterized in that: an outstanding confinement block on the internal ring wall of described this outer shroud frame, and an outstanding appearance pearl seat on the external annulus of inner ring frame, this confinement block is resisted against and holds by the pearl seat, with rotatable angle between restriction inner and outer rings frame.

8, electric fan as claimed in claim 7, it is characterized in that: lay most hole clippings on the internal ring wall of described this outer shroud frame, and assemble a steel ball that shored by a spring corresponding to the position of hole clipping on the inner ring frame, this steel ball card is embedded in the hole clipping, can locate the deflection angle of inner ring frame and fan body.