The electric fan that a kind of pitching angle is adjustable
Technical field
The utility model relates to a kind of fan, particularly the adjustable electric fan of a kind of pitching angle.
Background technique
Existing electric fan is in order to satisfy the multi-faceted air-supply requirement of Consumer, the mechanism of shaking the head about generally can arranging and shaking the head up and down, mainly include two kinds, a kind of is to drive respectively with two motors to shake the head and shake the head up and down about two groups of fourbar linkages of control are realized, its component are many, complex structure, the manufacture cost height makes trouble; Another kind is to utilize about an Electric Machine Control realization to shake the head, shake the head up and down by regulating the positioning device manual tune, with reference to Fig. 1, electric fan for existing manual tune pitching angle, it mainly comprises the supporting frame 2 ' that is connected with base, supporting frame 2 ' upper end is hinged with the pitch rotation frame 3 ' that can rotate about in the of 2 ' around supporting frame, be provided with the adjusting positioning means of luffing angle between adjusting and positioning supporting frame 2 ' and the pitch rotation frame 3 ' between supporting frame 2 ' and the pitch rotation frame 3 ', described adjusting positioning means comprises the blind hole 31 ' that is arranged at pitch rotation frame 3 ' bottom, be provided with ball 12 ' in the blind hole 31 ' and press the spring 11 ' of ball 12 ', one side of support frame as described above 2 ' is provided with a plurality of positioning holes 21 ', and described ball 12 ' can be corresponding with each positioning hole 21 ' and be absorbed in the positioning hole 21 ' under the effect of spring 11 '.Thereby this structure relies on ball 12 ' and adjusting and the location of cooperating of each positioning hole 21 ' realizing pitching angle, simple in structure, cost of production is low, but because it only depends on side location, stressed property is poor, spring 11 ' lost efficacy easily, regulate the positioning means poor reliability, influence the stability of whole electric fan when serious, and then influence the normal use of electric fan, and this structure need be pressed ball 12 ' simultaneously and rotate pitch rotation frame 3 ', troublesome poeration when being regulated.
The model utility content
In order to overcome the deficiencies in the prior art, the utility model provides a kind of simple in structure, adjustable electric fan of pitching angle reliable pitching angle easy to adjust.
The technological scheme that its technical problem that solves the utility model adopts is:
The electric fan that a kind of pitching angle is adjustable, comprise the supporting frame that is connected with base, supporting frame upper end is hinged with the pitch rotation frame that can rotate up and down around supporting frame, pitch rotation frame top is provided with the oscillating mechanism of pitch rotation frame left-right rotation relatively, be provided with the adjusting positioning means of luffing angle between adjusting and positioning supporting frame and the pitch rotation frame between support frame as described above and the pitch rotation frame, described adjusting positioning means comprises the positioning block that is arranged at pitch rotation frame bottom, the bottom end of described positioning block is provided with some profile of tooth screens, the support frame as described above bottom is provided with under external force the card base of resiliently deformable downwards, the top end of described card base is provided with projection or groove, and projection or groove can form different pitching angle with each profile of tooth clamping matching and also can follow the card base resiliently deformable and snap in or withdraw from the profile of tooth screens.
As improvement of the technical scheme, described positioning block bottom end is the circular arc bottom end in the center of circle for the hinged center with supporting frame and pitch rotation frame.
Further, described card base is arch.
Further, described projection or groove are circular arc.
Further, support frame as described above is connected with base by column, and described column is provided with and surrounds the cavity of supporting frame to prevent that it from exposing.
Further, described oscillating mechanism is connected with fan blade, fan blade is provided with blade cover outward, described blade cover comprises forward and backward cover, described oscillating mechanism comprises forward and backward housing, and described front case is provided with locating column and is with externally threaded erection column, and described back cover is provided with through hole, and with tapped fixed block front case is fixedlyed connected with back cover after cooperating the positioning hole that front case is positioned, erection column to pass through hole with locating column.
Further, described forward and backward cover connects by the locked clip device of band opening, and the opening two ends of described clip connect locking by bolt, and the inwall of described clip is provided with the annular slot of being convenient to tighten forward and backward cover.
Further, described front case lower end is provided with the arc piece that auxiliary oscillating mechanism rotates, and described pitch rotation is set up and is equipped with the cylinder that matches with the arc piece.
Further, described oscillating mechanism comprises motor, and motor is connected with driving mechanism, and driving mechanism is the second-stage worm gear worm gears, and the output shaft of driving mechanism is connected with crank, and crank is hinged with connecting rod, and rod hinge connection is on the pitch rotation frame.
Further, described oscillating mechanism is connected with pitch rotation frame buckle.
The beneficial effects of the utility model are: the utility model is by the profile of tooth screens of positioning block bottom end and projection or the groove fit of card base top end, thereby the pitch rotation frame is located, in contrast to traditional spring ball structure that only depends on the location, side, effectively area of contact is big, locatees more reliable; Projection or groove can be followed the card base resiliently deformable and be snapped in or withdraw from the profile of tooth screens simultaneously, directly rotate the pitch rotation frame and can regulate different pitching angle, and be easy to operate.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the electric fan of existing manual tune pitching angle;
Fig. 2 is the utility model mounting structure schematic representation;
Fig. 3 is installment state decomposing schematic representation of the present utility model;
Fig. 4 is the decomposing schematic representation of partial structurtes in the utility model;
Fig. 5 is the sectional view of Fig. 4 installment state;
Fig. 6 is the stereogram of the supporting frame in the utility model;
Fig. 7 is the plan view of Fig. 4 installment state;
Fig. 8 is back cover in the utility model and the decomposing schematic representation of front case installment state;
Fig. 9 is the partial schematic diagram of the clip in the utility model.
Embodiment
With reference to Fig. 2 to Fig. 9, the adjustable electric fan of a kind of pitching angle of the present utility model, comprise the supporting frame 2 that is connected with base, supporting frame 2 upper ends are hinged with the pitch rotation frame 3 that can rotate up and down around supporting frame 2, described pitch rotation frame 3 tops are provided with the oscillating mechanism 4 of pitch rotation frame 3 left-right rotation relatively, be provided with the adjusting positioning means of luffing angle between adjusting and positioning supporting frame 2 and the pitch rotation frame 3 between support frame as described above 2 and the pitch rotation frame 3, described adjusting positioning means comprises the positioning block 31 that is arranged at pitch rotation frame 3 bottoms, the bottom end of described positioning block 31 is provided with some profile of tooth screens 32, support frame as described above 2 bottoms are provided with under external force the card base 21 of resiliently deformable downwards, the top end of described card base 21 is provided with projection 22 or groove, and projection 22 or groove can cooperate the different pitching angle of formation with each profile of tooth screens 32 and can follow card base 21 resiliently deformables and snap in or withdraw from profile of tooth screens 32.
The utility model is by the profile of tooth screens 32 of positioning block 31 bottom ends and projection 22 or the groove fit of card base 21 top ends, thereby with pitch rotation frame 3 location, in contrast to traditional spring ball structure that only depends on the location, side, effectively area of contact is big, locatees more reliable; Projection 22 or groove can be followed card base 21 resiliently deformables and be snapped in or withdraw from profile of tooth screens 32 simultaneously, directly rotate pitch rotation frame 3 and can regulate different pitching angle, and be easy to operate.
Preferably, described positioning block 31 bottom ends are the circular arc bottom end in the center of circle for the hinged center with supporting frame 2 and pitch rotation frame 3, this circular arc bottom end makes pitch rotation frame 3 avoid interfering with card base 21 in rotation process, also make simultaneously profile of tooth screens 32 equate with effective area of contact maintenance between the projection 22, thereby make rotatory force even.Preferably, described card base 21 is arch, because the upper-end surface of card base 21 is curved, avoid interfering with the circular arc bottom end, simultaneously because supporting frame 2 adopts plastics, card base 21 relies on two-end-points to support, and makes relatively easily distortion behind card base 21 pressurizeds, and because arch has certain sagitta, so easy-rupturing not during card base 21 pressurizeds.
Further, consider that the degree of reliability that is connected between projection 22 or groove and the profile of tooth screens 32 has influence on the reliability of location between pitch rotation frame 3 and the supporting frame 2 and easiness in relative rotation, effective area of contact too much will cause and relatively rotate difficulty between pitch rotation frame 3 and the supporting frame 2, effective area of contact is crossed the major general and is caused reliability of positioning poor, preferably, described projection 22 or groove are circular arc, circular arc matches with profile of tooth screens 32 and makes that projection 22 or groove are easier under the rotatory force effect of pitch rotation frame 3 and snap in or withdraw from profile of tooth screens 32, make simultaneously to cooperate between profile of tooth screens 32 and projection 22 or the groove closely, connect reliable.Certainly above-mentioned just preferred embodiment, projection 22 or groove also can be arranged to the profile of tooth suitable with profile of tooth screens 32.
Support frame as described above 2 is connected with base by column 1, and described column 1 is provided with and surrounds the cavity of supporting frame 2 to prevent that it from exposing.Column 1 plays a supportive role, and avoids supporting frame 2 to expose simultaneously, makes that whole electric fan outward appearance is more attractive in appearance.Particularly, in the present embodiment, described pitch rotation frame 3 is positioned at positioning block 31 tops and is provided with the hinging hole 33 hinged with supporting frame 2, support frame as described above 2 comprises that the upper end is provided with the U-shaped rotating turret 23 of being convenient to 3 rotations of pitch rotation frame, offer on the two side of U-shaped rotating turret 23 for hinged fixed hole 24, described column 1 upper end is provided with the U-shaped arm 11 suitable with U-shaped rotating turret 23, offer the mounting hole 12 corresponding with fixed hole 24 on U-shaped arm 11 two sides, bolt passes mounting hole 12, fixed hole 24 and hinging hole 33, use nut lockk bolt again, thereby realize pitch rotation frame 3, connection between supporting frame 2 and column 1 three.
Further, described oscillating mechanism 4 is connected with fan blade 5, the fan blade 5 outer blade covers 6 that are provided with, described blade cover 6 comprises forward and backward cover 61,62, described oscillating mechanism 4 comprises forward and backward housing 71,72, described front case 71 is provided with locating column 712 and is with externally threaded erection column 711, described back cover 62 is provided with through hole 621, and cooperate the positioning hole 622 that front case 71 is positioned, erection column 711 to pass through hole 621 then with tapped fixed block 8 front case 71 to be fixedlyed connected with back cover 62 with locating column 712.During installation the locating column 712 of front case 71 is aimed at the positioning hole 622 of back covers 62, erection column 711 is penetrated through hole 621 after, fixed block 8 is screwed in erection columns 711, thus with front case 71 and back cover 62 quick location and installation.Preferably, described forward and backward cover 61,62 clip 63 lockings by the band opening connect, the opening two ends of described clip 63 connect locking by bolt, and the inwall of described clip 63 is provided with is convenient to tighten forward and backward cover 61,62 annular slot 631, this design easy disassembly, connect reliable.Preferably, described front case 71 lower ends are provided with the arc piece 713 that auxiliary oscillating mechanism 4 rotates, described pitch rotation frame 3 is provided with the cylinder 36 that matches with arc piece 713, in the oscillating mechanism 4 left-right rotation processes, arc piece 713 is connected to cylinder 36 outer side surfaces and rotates, and makes that the rotation of oscillating mechanism 4 is more steady.
Further, described oscillating mechanism 4 comprises motor 41, and motor 41 is connected with driving mechanism 42, driving mechanism 42 is the second-stage worm gear worm gears, the output shaft of driving mechanism 42 is connected with crank 43, and crank 43 is hinged with connecting rod 44, and connecting rod 44 is articulated on the pitch rotation frame 3.Second-stage worm gear worm drive reduction speed ratio is big, changes transmission direction simultaneously, and under identical reduction speed ratio, it is littler to take up room, and makes that oscillating mechanism 4 is compacter, makes whole electric fan lighter and handier.
For quick mounting oscillating mechanism 4 and rotating turret, described oscillating mechanism 4 is connected with pitch rotation frame 3 buckles, particularly, pitch rotation frame 3 upper ends are provided with protruding 35 the pillar 34 of buckleing, pillar 34 is connected with support platform, and oscillating mechanism 4 lower ends are provided with clamping through hole 45, and pillar 34 inserts clamping through hole 45, protruding button 35 snaps in the upper-end surface of clamping through hole 45 simultaneously, and oscillating mechanism 4 lower ends are connected to the support platform upper-end surface.
Certainly, the utility model can also have other structural distortion except above-mentioned mode of execution, and these equivalent technical solutions also should be within its protection domain.