CN1467383A

CN1467383A - Self stepless angle adjusting equipment for electric fan

Info

Publication number: CN1467383A
Application number: CNA021343063A
Authority: CN
Inventors: 蒋亮健
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-07-08
Filing date: 2002-07-08
Publication date: 2004-01-14

Abstract

An electric fan self-motivating non-stepped angle regulating device driven by fan motor worm, the device is realized by the co-operating operation of worm, worm gear, gear power transmission and ratchet wheel ratchet clutch, cam pendulum bar sampler, pendulum bar baffle plate pallet controlling machine, and pendulum bar staddle lower arranged teeth differential planet-wheel speed-variator, thus realizing stabilized non-stepped angular modulation.

Description

Electric fan self-acting type stepless angle modulation apparatus

Technical field

The present invention relates to the angle pendulum regulating mechanism of electric fan, especially a kind of electric fan self-acting type stepless angle modulation apparatus.

Back of the body border technology

In the prior art, the patent No. is the invention of ZL89100824,1 oscillation angle adjuster for electric fan, showed a kind of self-powering type pivot angle adjusting gear case apparatus, referring to original text as can be known this pivot angle regulating tooth roller box obtain angle modulation motive force by the fan electromotor worm screw,---worm gear---gear transmission transfer mechanism that passes through worm screw,---fork sample detecting device, fork---concerted action of baffle plate ratchet control mechanism through click clutch, cam, but drive the crank-motion of planetary gear train displacement, and reach the purpose of electric fan self-acting type angle modulation.But, because but the planetary gear train displacement crank mechanism of mentioning in the original text only shows wherein a kind of external tooth planetary gear structure pattern, but this kind external tooth planetary gear train displacement crank is meshed with central gear on planet carrier by the single-ended cantilever arrangement of planet axis by planet wheel, influenced by the cantilever action power of the eccentric pin shaft of planet wheel other end assembling, this external tooth planetary gear structure mode in use often produces abnormal dislocation, displacement, even local part breaking, cause the self-powering type angle modulation malfunctioning.In addition, but the concrete dependency structure form of showing another kind of inner gear planetary displacement crank is not arranged in the original text, obviously, the structural type that the single-ended cantilever structure of this outer gear planetary wheel is formed is need be improved.

Summary of the invention

The object of the invention be to provide a kind of reliably, be difficult for producing dislocation, the malfunctioning and electric fan self-acting type stepless angle modulation apparatus that damages.

The present invention includes housing, worm screw---worm gear---reduction gears mechanism, the click clutch, cam---swing-bar mechanism, fork---push pedal ratchet control mechanism, hollow shaft, central shaft, the center lower gear, connecting rod and lower planet frame, be shaped on cylindrical cavity in the lower planet frame of hollow shaft lower end, inner gear planetary is housed in the cylindrical cavity, inner gear planetary and the engagement of center lower gear, inner gear planetary outside end face has eccentric pin shaft, below the lower planet frame pressing plate is arranged, pressing plate is encapsulated in inner gear planetary in the cylindrical cavity of lower planet frame, pressing plate has through hole, and eccentric pin shaft passes through hole and can make the circumference cycle rotation in through hole.Above-mentioned through-hole diameter is slightly larger than the eccentric pin shaft diameter and adds crank maximum eccentricity sum, and less than the inner gear planetary external diameter, be shaped on inner chamber in the gearwheel of hollow shaft upper end, establish the tooth differential planetary gear between central shaft upper end and the bearing support, the tooth differential planetary gear places in the inner chamber of gearwheel, make bearing support and central shaft realize the gear ratio of transformation of speed, equal the gear ratio of inner gear planetary and center lower gear.Above-mentioned tooth differential planetary gear can be that internal gear is the tooth differential planetary gear of fixed component, it comprises that internal gear is packed in the gearwheel inner chamber, planet wheel is with public planet wheel mode and internal gear and sun gear engagement, sun gear is contained in the central shaft upper end, planet carrier is provided with planetary spindle and planet wheel is assembled into movingly, and the planet carrier upper-end surface is established upper shaft and passed upper cover plate mesopore tipping bearing support; Above-mentioned tooth differential planetary gear also can be that planet carrier is the tooth differential planetary gear of fixed component, it comprises that planetary spindle is located at the gearwheel inner chamber with means of fixation, planet wheel is contained on the planetary spindle to become movingly, internal gear is contained in the inner chamber to become movingly with one heart, planet wheel is with public mesomerism gear mode and internal gear and sun gear engagement, sun gear is contained in the central shaft upper end with one heart, and internal gear outside end face is established upper shaft and passed upper cover plate mesopore tipping bearing support.

Description of drawings

Fig. 1 is the general structure schematic representation of the embodiment of the invention;

Fig. 2 is another routine structural representation of fixed component with the planet carrier for tooth differential planetary gear in the embodiment of the invention;

Fig. 3 is the bottom assembling partial schematic diagram of planet carrier.

Embodiment

With embodiment and accompanying drawing the present invention is described in further detail below:

With reference to Fig. 1, Fig. 2 and Fig. 3, the present invention includes housing 19, worm screw 7---worm gear 16---gear 5 reducing gears, the click clutch, cam---swing-bar mechanism, fork---push pedal ratchet control mechanism, hollow shaft 17, central shaft 18, center lower gear 16, connecting rod 13 and planet carrier 9, be shaped on cylindrical cavity 10 in the lower planet frame 9 of hollow shaft 17 lower ends, inner gear planetary 11 is housed in the cylindrical cavity 10, inner gear planetary 11 and 16 engagements of center lower gear, inner gear planetary 11 outside end faces have eccentric pin shaft 14, pressing plate 12 is arranged below the lower planet frame 9, pressing plate 12 is encapsulated in inner gear planetary 11 in the cylindrical cavity 10 of lower planet frame 9, pressing plate 12 has through hole 15, through hole 15 slightly larger in diameter add crank maximum eccentricity sum in eccentric pin shaft 14 diameters, and less than inner gear planetary 11 external diameters, eccentric pin shaft 14 passes through hole 15 and can make the circumference cycle rotation in through hole 15.But thereby constitute one group of displacement crank that adopts the inner gear planetary structure to form.Be shaped on inner chamber 25 in the gearwheel 5 of hollow shaft 17 upper ends, establish the tooth differential planetary gear between central shaft 18 upper ends and the bearing support 1, the tooth differential planetary gear places in the inner chamber 25 of gearwheel 5, make bearing support 1 and central shaft 18 realize the gear ratio of transformation of speed, equal the gear ratio of inner gear planetary 11 and center lower gear 16, thereby but make fork 2 on the bearing support 1 constitute one group with inner gear planetary displacement crank displacement track sampler one to one.Described tooth differential planetary gear can be that internal gear 20 is the tooth differential planetary gear of fixed component, it comprises that internal gear 20 is packed in gearwheel 5 inner chambers 25, planet wheel 21 is with public planet wheel mode and internal gear 20 and sun gear 23 engagements, sun gear 23 is contained in central shaft 18 upper ends, planet carrier 24 is provided with planetary spindle 22 and is assembled into movingly with planet wheel 21, and planet carrier 24 upper-end surfaces are established upper shaft 27 and passed upper cover plate 26 mesopores tipping bearing support 1; Described tooth differential planetary gear also can be that planet carrier is the tooth differential planetary gear of fixed component, it comprises that planetary spindle 30 is located at gearwheel 5 inner chambers 25 with means of fixation, planet wheel 29 is contained on the planetary spindle 30 to become movingly, internal gear 28 is contained in the inner chamber 25 to become movingly with one heart, planet wheel 29 is with public mesomerism gear mode and internal gear 28 and sun gear 31 engagements, sun gear 31 is contained in central shaft 18 upper ends with one heart, and internal gear 28 outside end faces are established upper shaft 32 and passed upper cover plate 33 mesopores tipping bearing support 1.

Its working procedure is as follows: motor power is by worm screw 7, and worm gear 6, worm-wheel shaft 8 drive gearwheel 5 rotations.Put the spatial position of having decided breach 3 by the displacement that the adjusting knob (not shown) on the control panel is made in the certain limit baffle plate 4, promptly imported given signal to regulating system; Being conditioned object---crank length is taken a sample by cam swing mechanism, amplification by fork 2 also is reflected on the baffle plate 4 by the free end position of fork 2, baffle plate 4 itself is again a comparator, it obtains the difference of sampled value and setting value by computing, when sampled value is consistent with setting value, fork 2 positions overlap with breach 3 positions, at this moment fork 2 whenever circle all must be by breach and do not stopped, if sampled value is different with setting value, its free end was blocked by plate washer 4 when fork 2 forwarded on plate washer 4 positions, rush open the clutch of bearing support 1 immediately, bearing support 1 following tooth differential planetary gear is moved,, drive central shaft 18 and rotate through the speed change conversion, cause that inner gear planetary 11 changes crank length around central gear 16 actions, thereby change the pivot angle of electric fan.Meanwhile, 2 swings of cam drive fork are slided fork 2 free ends on baffle plate 4 edges, constantly make comparisons on baffle plate 4 with new sampled value and setting value.Because cam profile is continuous, so no matter the change of setting value is to increase or reduce, sampled value finally can account for the setting value unanimity, at this moment fork 2 free ends find breach 3 and pass through breach 3, thereby discharge the central shaft 18 be braked and engaging clutch again, so fan is with new pivot angle operation.Because the engagement of inner gear planetary 11 and central gear 16 almost is that face contacts, and improves the bearing capacity of planet wheel transmission greatly; And inner gear planetary 11 adopts cylindrical cavity 10, and pressing plate 12 two-end bearing support structures have bigger rigidity than the single-ended cantilever structure of outer gear planetary wheel, thereby can realize high positive drive.In shake the head operation and pivot angle adjustment process, also be not easy to misplace even be subjected to unusual impact force, displacement and damage parts, its operation is steadily reliably all the time.

The present invention can realize electric fan self-acting type stepless angle modulation, and its engagement is reliable and stable, is adapted at using in all kinds of electric fans.

Claims

1, a kind of electric fan self-acting type stepless angle modulation apparatus, it comprises housing (19), worm screw---worm gear---reduction gears mechanism, the click clutch, cam---swing-bar mechanism, fork---push pedal ratchet control mechanism, hollow shaft (17), central shaft (18), center lower gear (16), connecting rod (13) and lower planet frame (9), it is characterized in that: be shaped on cylindrical cavity (10) in the lower planet frame (9) of hollow shaft (17) lower end, inner gear planetary (11) is housed in the cylindrical cavity (10), inner gear planetary (11) and center lower gear (16) engagement, inner gear planetary (11) outside end face has eccentric pin shaft (14), pressing plate (12) is arranged below the lower planet frame (9), pressing plate (12) is encapsulated in inner gear planetary (11) in the cylindrical cavity (10) of lower planet frame (9), pressing plate (12) has through hole (15), through hole (15) slightly larger in diameter adds crank maximum eccentricity sum in eccentric pin shaft (14) diameter, and less than inner gear planetary (11) external diameter, eccentric pin shaft (14) passes through hole (15) and can make the circumference cycle rotation in through hole (15), be shaped on inner chamber (25) in the gearwheel (5) of hollow shaft (17) upper end, establish the tooth differential planetary gear between central shaft (18) upper end and the bearing support (1), the tooth differential planetary gear places in the inner chamber (25) of gearwheel (5).

2, electric fan self-acting type stepless angle modulation apparatus according to claim 1, it is characterized in that: described tooth differential planetary gear can be that internal gear (20) is the tooth differential planetary gear of fixed component, it comprises that internal gear (20) is packed in gearwheel (5) inner chamber (25), planet wheel (21) is with public planet wheel mode and internal gear (20) and sun gear (23) engagement, sun gear (23) is contained in central shaft (18) upper end, planet carrier (24) is provided with planetary spindle (22) and is assembled into movingly with planet wheel (21), and planet carrier (24) upper-end surface is established upper shaft (27) and passed upper cover plate (26) mesopore tipping bearing support (1).

3, electric fan self-acting type stepless angle modulation apparatus according to claim 1, it is characterized in that: described tooth differential planetary gear also can be that planet carrier is the tooth differential planetary gear of fixed component, it comprises that planetary spindle (30) is located at gearwheel (5) inner chamber (25) with means of fixation, planet wheel (29) is contained on the planetary spindle (30) to become movingly, internal gear (28) is contained in the inner chamber (25) to become movingly with one heart, planet wheel (29) is with public mesomerism gear mode and internal gear (28) and sun gear (31) engagement, sun gear (31) is contained in central shaft (18) upper end with one heart, and internal gear (28) outside end face is established upper shaft (32) and passed upper cover plate (33) mesopore tipping bearing support (1).

4, electric fan self-acting type stepless angle modulation apparatus according to claim 1, it is characterized in that: described tooth differential planetary gear makes bearing support (1) and central shaft (18) realize the gear ratio of transformation of speed, equals the gear ratio of inner gear planetary (11) and center lower gear (16).