CN2391038Y - Oscillation amplitude regulator for electric appliance - Google Patents

Abstract

The utility model relates to a mechanical driving device, which is used for adjusting the pendulum deflection of electric fans and electric warming ovens. The utility model changes the length of one of two short arms in a changeover mechanism of four-connecting rod rotation-oscillating motion to change the pendulum deflection. An adjustment rotating knob arranged outside an electric appliance casing is connected with a driving arm together, and the rotation of the rotating knob can drive a driven arm to rotate via the driving arm. The rotation of the driven arm causes the distance of the small shaft of the upper connecting rocker-a long arm in the four-connecting rod mechanism to the shaft line of the driving arm to change. The length of one short arm in the four-connecting rod mechanism is changed. Thus the adjustment of the pendulum deflection of the electric appliance can be realized.

Description

The swing amplitude regulator of electrical equipment

The utility model relates to the mechanical movement conversion mechanism of a kind of rotation that is mainly used in the amplitude of oscillation adjusted of household electric appliance-swing.

The swing mechanism that is widely used in electric fan and electric heater at present is four fixing connecting rod mechanical devices of a kind of amplitude of oscillation.The Consumer is when using the swing function of these electrical equipment, and the amplitude of oscillation angle that its needed amplitude of fluctuation in most cases all is difficult to fix with electrical equipment conforms to, and this has brought very big inconvenience for their use, and the utilization efficiency step-down has also caused the waste of the energy.

For many years, domestic many scientific workers react hope that the Consumer improves this situation for realizing that adjustable amplitude of fluctuation has proposed a lot of Technological improvement plans, and what see patent documentation promptly reaches tens.But what these patents all failed to be satisfied with addressing this problem, and has adopted complicated structure such as planet wheel, sprocket wheel chain, helical line chute to cause manufacture difficulty to strengthen such as patents such as ZL87210896.1, ZL90215513.X, ZL93237042.X; The method that patent such as ZL87212070.8, ZL90215306.4 has adopted backguy, slide block etc. surely to lean on inadequately; Other patent also exists similar shortcoming and ubiquity inconvenient operation more, does not have indication of amplitude of oscillation angle or the very insecure problem of indication.Because the existence of these shortcomings does not see as yet that so far these patents can be widely used in commercialization production.

Task of the present utility model just provides a kind of simple in structure, easy processing, clear, the easy to operate mechanical transmission mechanism of pivot angle indication, realizes that the amplitude of fluctuation of household electric appliance such as electric fan, electric heater can be adjusted in the several angle scope.

This swing amplitude regulator is a rotation based on four connecting rod forms-oscillating motion switching mechanism, it is characterized in that it comprises a controlling device of being made up of knob 1, master arm 2, slave arm 3, connecting rod 4 and gear 9 or support 10, turning knob 1 can pass through master arm 2, connecting rod 4 drives slave arm 3 and rotates, thereby changed the distance that the little axle 5 that connects L2 on the slave arm 3 arrives knob 1 shaft axis, also just change L3 in the quadratic crank mechanism or the length of L4, thereby reached the effect of adjusting the amplitude of oscillation.

Knob 1 can endwisely slipping along the master arm 2 with square shaft under the guiding of center square hole, because the reset response of spring 6, knob 1 will be adjacent to dial 7, and rely in the hole in several pin holes that pin 8 inserts on the circumference that is distributed in dial 7.Pull up, rotate and then unclamp knob 1 itself and dial 7 are locked on a new relative position.Knob 1 is one to one with respect to the change in location of dial 7 and the length change of L3 or L4, just the variation with amplitude of fluctuation is one to one, so no matter dial 7 along with how gear 9 that fuses with it or support 10 move, can indicate the angular dimension of the amplitude of oscillation on it.

The utility model is to realize on the basis of original oscillator device, does not destroy original general structure layout fully, thereby the design of original structure part changes seldom; The number of spare parts that increases newly is few, simple shape, and required precision is low, and processing and assembling all are easy to; Only need pull up for the user and turning knob 1 can be realized the change of the amplitude of oscillation to the respective angles marker location of dial 7.

The utility model will further be illustrated by accompanying drawing and representative embodiment, wherein:

Fig. 1 is the structure diagram that is used to adjust the device of L3 length;

Fig. 2 adjusts L3 length change schematic representation;

Fig. 3 is the structure diagram that is used to adjust the device of L4 length;

Fig. 4 adjusts L4 length change schematic representation;

Fig. 5 is one of embodiment who is used for by electric fan;

Fig. 6 be used for electric fan embodiment two;

Fig. 7 is the embodiment who is used for electric heater;

Fig. 8 is the structure and the fundamental diagram of four connecting rod rotation-swinging transmission mechanisms.

In Fig. 8, L1 and L2 are two and are generally isometric connecting rod, in object construction, L1 is that the electrical equipment main body 11 of swing is own, L3 is the driving link that rotates, and the rotation of L3 can be obtained by reducing gear by the main shaft of fan electromotor, also can be obtained by the motor via reducer structure of special use.To make L1 produce reciprocal swing when L3 rotates, A, C are the limit positions of L1 reciprocally swinging.When the rotation of L3 was clockwise direction, B was the intermediateness of L1 from A to C, and D is L1 gets back to A from C a intermediateness.As can be seen from the figure when A, C state, four connecting rods have been formed two different triangles, but utilize trigonometric function knowledge or obtain the amplitude of fluctuation of L1 by the graphing method solving a triangle.Can find out also that from figure the length that changes L3 or L4 can cause the variation of pivot angle.Can find out also that from figure it is L3＜L4 that this movement conversion mechanism keeps stable necessary condition.When adjusting L3, its excursion is 0≤L3＜L4, and the excursion of its pivot angle N is 0≤N＜180. When adjusting L4, its excursion is L3＜L4≤X, and the excursion of its pivot angle N is 180.＞N 〉=R, X is a size to be determined in the formula, is subjected to the restriction of structure, it is very big that X can not select, thereby its corresponding pivot angle R also can not be transferred to very little.

The reducing gear that drives the L3 rotation, the final stage of only having drawn gear 9 have been saved in the structural drawing of adjustment L3 shown in Figure 1.With reference to Fig. 2, have limit stoper on the gear 9, thereby there are two limit positions in the rotation of knob 1, be 0 and be slightly less than L4 to the length of the distance L 3 of the shaft axis of knob 1 corresponding to the little axle 5 of these two limit positions, the corresponding amplitude of oscillation promptly be 0 ° be slightly less than 180 °.Each neutral position of knob can mark corresponding angle indication by the position of calculating, mapping or corresponding each pin hole of experiment all corresponding to an amplitude of oscillation angle on dial.Under the condition of electrical structure size permission, dial is programmable big, and pin hole is done to such an extent that try one's best more intensively on it, and the adjustment progression of pivot angle just can be more like this.

The device of adjustment L4 shown in Figure 3 has and similar structure shown in Figure 1, and its middle gear 9 is replaced by support 10, and electrical equipment body 11 is supported in swing on the support 12, and little axle 5 distances to knob 1 shaft axis are 14.With reference to Fig. 4, the length of two pairing L4 of limit position that the determined knob 1 of limit stoper on the support 10 rotates is respectively to be slightly larger than L3 and an a certain undetermined size bigger than L3, and its corresponding pivot angle then is to be slightly less than 180 ° and a minimum swash angle to be selected.

The embodiment of electric fan shown in Figure 5 has adopted the mode of adjusting L3, because the length of L3 can be adjusted into 0, so can save clutch device 13 in the reducing gear.

Structure and Fig. 1 of the regulating mechanism of present embodiment are identical, and the vertical point on right side line has provided turn-knob 1, the dial 7 of regulating mechanism, the axial location of master arm 2, the profile of only having drawn turn-knob 1 and dial 7 among the figure among the figure; The dot and dash line of level has provided the position of L2 among the figure; The line of the vertical point on the left side has provided the shaft core position of blower-casting swing, and the left end of L2 is connected with swinging center by having 14 of fixed length.

The embodiment of electric fan shown in Figure 6 has adopted the mode of adjusting L4, because the amplitude of oscillation can not be adjusted into 0 °, does not swing usage mode for what realize electric fan, has kept the clutch 13 in the retarder that is arranged at L3 one end.

Structure and Fig. 3 of the regulating mechanism of present embodiment are identical, and the vertical point on left side line has provided turn-knob 1, the dial 7 of regulating mechanism, the axial location of master arm 2, the profile of only having drawn turn-knob 1 and dial 7 among the figure among the figure; The dot and dash line of level has provided the position of L2 among the figure; The vertical point line on the right side has provided the position of L3 axis of rotation, and the right-hand member of L2 is hinged with an end of the rotation of the L3 with fixed length.

The example of electric heater shown in Figure 7 has adopted the mode of adjusting L3, and motor special and reducing gear that it is used to swing all do not show.

The structure of the regulating mechanism of present embodiment is also identical with Fig. 1, sees also the explanation of Fig. 5, and blower-casting has changed the housing of electric heater into here.

But the utility model can also be applied to decorate the amplitude modulation swing of electrical equipment such as shot-light, program laser lamp, searchlight.

Claims (3)

1, the electrical equipment swing amplitude regulator that a rotation based on four connecting rod forms---oscillating motion switching mechanism constitutes, its amplitude of oscillation adjustment realizes by the length that changes its galianconism L3 or galianconism L4, it is characterized in that: stretch out fixedly connected dial (7) on the hollow shaft of outer gear (9) of Electric Apparatus Chassis or support (10), the outer end of casing that passes the mandrel of hollow shaft is connecting turn-knob (1), the other end fixedly connected master arm (2), an engaging and disengaging gear can make turn-knob (1) and dial (7) be in combination or separated state, the axis client that slave arm (3) rotates is fixed on gear (9) or the support (10), its round end is hinged by the end of a long-armed L2 in little axle (5) and the quadratic crank mechanism, little axle (5) has constituted the length of galianconism L3 or L4 to the distance of master arm (2) rotation axis, when turn-knob (1) and dial (7) when being in bonding state, this length remains unchanged, the amplitude of oscillation of electrical equipment is constant, when they are in separated state, turn-knob (1), mandrel and master arm (2) can rotate in the hollow shaft of dial (7), the rotation of master arm (2) makes driven example (3) along with rotation by a driving mechanism, so changed on it little axle (5) to the distance of master arm (2) axis, just change the length of L3 or L4, reached the effect of adjusting the amplitude of oscillation.

2, swing amplitude regulator according to claim 1, it is characterized in that: the two ends of connecting rod (4) are hinged with the round end of master arm (2) and slave arm (3) respectively, and they have constituted the driving mechanism that slave arm (3) is rotated along with master arm (2) with turn-knob (1), gear (9) or support (10).

3, according to the described swing amplitude regulator of claim 1, it is characterized in that: the engaging and disengaging gear between turn-knob (1) and the dial (7) is by the turn-knob that has pin (8) (1), having a series of dial (7) and springs (6) that are distributed in the pin hole of garden on week constitutes, turn-knob (1) can slide along the mandrel of the master arm with square-section (2), when pin (8) is thrown off pin hole on the dial (7) along with the slip of turn-knob (1), engaging and disengaging gear is in separated state, the relative position of turn-knob (1) and dial (7) can change, and when pin (8) resets the new pin hole of of entering dial (7) with turn-knob (1) under the effect of spring (6), engaging and disengaging gear is in bonding state, and turn-knob (1) and dial (7) just have been linked to be one.

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