CN201421871Y

CN201421871Y - Centrifugal switch used for driving motor

Info

Publication number: CN201421871Y
Application number: CN2009201230363U
Authority: CN
Inventors: 鲁文龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-06-21
Filing date: 2009-06-21
Publication date: 2010-03-10
Anticipated expiration: 2019-06-21

Abstract

The utility model discloses a centrifugal switch used for driving a motor, which comprises a centrifuge and a wire box body. A sliding net sleeve which telescopes axially and is in slip fit with a shaft is assembled on the centrifuge, a contact point pole piece set is assembled in the wire box body, the front end of a movable bar in running fit with the wire box body controls the leave and joint of the contact point in the contact point pole piece set, a poke rod is arranged on a centrifugal switch, the middle part of the centrifugal switch is in running fit with one side of the bottom surfaceof the wire box body and reset through a torsion spring, the front end head of the poke rod is connected with the bottom end surface of the sliding net sleeve, the sliding net sleeve controls the rotation of the poke rod, and the tail end of the poke rod collides on the movable bar. The utility model has the advantages that the adoption that the sliding net sleeve serves as a contact point startand stop working face ensures the steady operation of the movable bar; the integral type poke rod simplifies the structure of the centrifugal switch, at the same time, improves the ruggedness of the poke rod, that is, prolongs the service life of the whole centrifugal switch; and the integral type poke rod relieves the complexity of the installation, and improves the convenience of the routine maintenance.

Description

A kind ofly be applicable to motor-driven centrifugal switch

Technical field

The utility model relates to a kind of centrifugal switch, particularly a kind of motor-driven centrifugal switch.

Background technology

Be fitted with centrifugal switch in existing washing machine, the dry cleaner equipment, this centrifugal switch is mainly used in electric motor starting, high-revolving conversion, the principle of centrifugal switch mainly relies on the centrifugal force of balancing weight to realize the conversion of corresponding contacts, adopts sedimentator, wiring boxcar as its primary structure of washing machine centrifugal switch commonly used; One end of sedimentator disposes the control panel of axial slip, disposes transfer contact in the wiring boxcar, and wiring boxcar exterior oscillations has motion bar, and the difference of motion bar control transformation contact changes, and the swing of motion bar is driven by control panel; By existing structure, the contact zone of motion bar and control panel is the outer circle diameter of control panel on circle, because outer circle diameter is limited after all to the contact area of circle, easily slippage in use causes fault first; Second contact area is little, and is easy to wear, reduced the useful life of whole utensil.

The centrifugal switch of the Chinese patent literature patent No. 200510122011.8 disclosed split-phase motors is arranged again, comprising: sleeve, it is inserted in the stopper of axle, and is formed with flange part on its outer peripheral face; Slide block, it is in the outside of above-mentioned sleeve, movably inserts along the direction of principal axis of above-mentioned sleeve, and when arriving set position, disconnects the ancillary coil circuit; Centrifugal actuator, it is formed with more than 2 at least, and when above-mentioned axle is rotated, opens laterally by the centrifugal force that produces; Extension spring, it is to the flexible restoring force of directive effect of the above-mentioned centrifugal actuator of convergence, and the inner face of sleeve is formed with draw-in groove, and this draw-in groove carries out face with the two sides of the direction of rotation of above-mentioned stopper and contacts.The sleeve keying operation of contact, slippage control below is up and down adopted in this design, and this opening/shutting mode is owing to take the mode of directly touching, and its impulsive force is bigger, and the contact opens and closes fluctuation of service, and is fragile.

The utility model content

Technical problem to be solved in the utility model is that the present situation at prior art provides a kind of designs simplification, stable, long service life and regular maintenance to be applicable to motor-driven centrifugal switch easily.

The utility model solves the problems of the technologies described above the technical scheme that is adopted:

A kind ofly be applicable to motor-driven centrifugal switch, comprise sedimentator and line box body, be fitted with an axial stretching and the sliding sliding network cover of joining of axle on the sedimentator; Be fitted with contact pole piece group in the line box body, and clutch by contact in this contact pole piece group of motion bar front-end control that is rotatably assorted with the line box body, this centrifugal switch also is provided with a poke rod, be rotatably assorted online box body bottom surface one side and resetted by torsion spring of its middle part; The front end of this poke rod contacts with sliding network cover bottom face, and is rotated by sliding this poke rod of network cover control, and the poke rod tail end is conflicted on motion bar.

Above-mentioned poke rod front end is branched into two member bodies according to arc, and this member body front end all is shaped on the projection body, and the crowning of this projection body and above-mentioned sliding network cover bottom face touching.

Above-mentioned poke rod tail end is shaped on driving handle, and conflicting with above-mentioned motion bar front end by this driving handle cooperates.

Above-mentioned poke rod middle part is provided with rotation seat, and correspondingly, above-mentioned line box body bottom surface one side is shaped on the supporting seat of projection, and supporting seat and rotation seat are rotatably assorted.

Above-mentioned torsion spring is through on the swivel pin, and an end of torsion spring is by line box body location, and the other end of torsion spring is located by rotation seat.

Establish block on the above-mentioned rotation seat, the other end of above-mentioned torsion spring is spacing by this block.

Compared with prior art, advantage of the present utility model is:

Adopt the end face of sliding network cover to open and close working face as the contact, its contact area is big, changes the method for original employing looped drive, has guaranteed that motion bar is stable; The integral type poke rod when having simplified the centrifugal switch structure, has improved the intensity of poke rod, has promptly also improved the useful life of whole centrifugal switch; The integral type poke rod is beneficial to and reduces the complexity of installing, and has improved the convenience of regular maintenance.

Description of drawings

Fig. 1 is the vertical partial schematic sectional view of the utility model embodiment sedimentator when static;

Fig. 2 is the floor map of the utility model embodiment sedimentator when static;

Vertical partial schematic sectional view when Fig. 3 is the work of the utility model embodiment sedimentator;

Floor map when Fig. 4 is the work of the utility model embodiment sedimentator;

Fig. 5 is that the master during the keeping flat of poke rod looks schematic diagram among Fig. 1;

Fig. 6 is the elevational schematic view of Fig. 5;

Fig. 7 is that the utility model embodiment one is used for the decomposing schematic representation on the washing machine;

Fig. 8 is that the utility model embodiment two is used for the decomposing schematic representation on the dryer.

Embodiment

Embodiment is further described the utility model below in conjunction with accompanying drawing.

As shown in Figure 1 and Figure 2, a kind ofly be applicable to motor-driven centrifugal switch, form by two parts: sedimentator 1 and line box body 2.Sedimentator 1 is installed on the machine shaft, and line box body 2 is installed on the electric motor end cap.

The structure of general sedimentator 1 comprises the driving seat 11 that cooperates with the motor shaft plug-in mounting, and the equal symmetrical hanging sleeve of these driving seat 11 top cross-arms has balance weight body 12, is linked with extension spring 13 between the balance weight body 12, and extension spring 13 control balance weight body 12 are inwardly by cage; And hook with the both sides of sliding network cover 3 bottom side of this balance weight body 12; Increase along with the motor rotary speed, balance weight body 12 overcomes the centrifugal force of rotation outwards to be thrown away, and drives outwards shrinking back of sliding network cover 3, and the axial stretching of sliding like this network cover 3 drives poke rod 4, thereby drive motion bar 5, and then the conversion of control line box body 2 interior pole piece group 6 each contact, contact.

The closure of contact pole piece group 6 is to be accomplished in the motion of sedimentator 1 closure-throw away by poke rod 4, motion bar 5 with disconnecting in the line box body 2, sees Fig. 1, Fig. 2, Fig. 3, Fig. 4.

As shown in Figure 5, described poke rod 4 front ends are branched into two member bodies 41 according to arc, and described member body 41 front ends all are shaped on projection body 42, and the crowning of this projection body 42 and described sliding network overlap the touching of 3 bottom faces.

On poke rod 4, the high spot of projection body 42 is to overlap 3 plane contact and the position of separating with sliding network, and driving handle 43 is and motion bar 5 contact and the positions of separating, block 45 be torsion spring 23 1 ends by only.The other end of torsion spring 23 is by ending, so that poke rod 4 can not arrogated to oneself because of the gap after sedimentator 1 is thrown away with line box body 2 table planes.Torsion spring 23 has the effect of stage clip simultaneously, and poke rod 4 is packed into axially can play in the fixed support on the line box body 2.

Described supporting seat 21 comprises two securing supports 24 that are arranged in parallel, and described rotation seat 44 places between two securing supports 24, and by swivel pin 22 with the two cross-under together.

As shown in Figure 1 and Figure 2, motor is not when switching on work, the sedimentator 1 of centrifugal switch is in closure state, the poke rod 4 one end projection bodies 42 that sliding network overlaps 3 baseplanes and line box body 2 in the sedimentator 1 press, on the supporting seat 21 of poke rod 4 by swivel pin 22 fixing online box bodies 2, the other end driving handle 43 of poke rod 4 presses motion bar 5.Motion bar 5 makes silver contact A and silver contact B under the pressing of poke rod 4 and compress the spring leaf of contact pole piece group 6 in the line box body 2, and silver contact D starts with silver contact E and contacts.The electric motor starting winding loop is in on-state.

As shown in Figure 3, Figure 4, the entry into service of motor energized, rotating speed reaches 72% to 83% o'clock of its synchronous speed, sedimentator 1 is owing to action of centrifugal force is thrown away, make the sliding network that presses motion bar 5 overlap 3 baseplanes and throw off, the spring leaf of contact pole piece group 6 backs down the motion bar 5 of rotary type under the elastic force effect of self, make silver contact A and silver contact B, the startup silver contact of silver contact D and silver contact E is thrown off, and silver contact C contacts with silver contact D.

Fig. 7 is the utility model embodiment one, promptly is used for the structure chart on the washing machine; Fig. 8 is the utility model embodiment two, promptly is used for the structure chart on the dryer; The motor difference that washing machine, dryer were equipped with is so the intermediate shaft hole difference of corresponding driving seat 11; The electric motor starting rotating speed and the Second-Stage Rotating Speed of being furnished with also are not quite similar, so the weight of the balance weight body 12 that washing machine, dryer are adaptive is not quite similar, so no matter be washing machine and drier, or miscellaneous equipment, when if rotating speed of motor need be changed, the utility model is all applicable, should correspondingly get final product for every kind of pairing axle of equipment prescription formula, structure weight.

Claims

1, a kind ofly is applicable to motor-driven centrifugal switch, comprises sedimentator (1) and line box body (2), be fitted with an axial stretching and the sliding sliding network cover (3) of joining of axle on the described sedimentator (1); Be fitted with contact pole piece group (6) in the described line box body (2), and clutch by this interior contact of contact pole piece group (6) of motion bar (5) front-end control that is rotatably assorted with described line box body (2), it is characterized in that: also be provided with a poke rod (4), its middle part is rotatably assorted and resets in described line box body (2) bottom surface one side and by torsion spring (23); The front end of this poke rod (4) contacts with described sliding network cover (3) bottom face, and controls this poke rod (4) by described sliding network cover (3) and rotate, and described poke rod (4) tail end is conflicted on motion bar (5).

2, a kind of motor-driven centrifugal switch that is applicable to as claimed in claim 1, it is characterized in that: described poke rod (4) front end is branched into two member bodies (41) according to arc, described member body (41) front end all is shaped on projection body (42), and the crowning of this projection body (42) and the touching of described sliding network cover (3) bottom face.

3, as claimed in claim 1 or 2ly be applicable to motor-driven centrifugal switch, it is characterized in that: described poke rod (4) tail end is shaped on driving handle (43), and conflicting with described motion bar (5) front end by this driving handle (43) cooperates.

4, as claimed in claim 3ly be applicable to motor-driven centrifugal switch, it is characterized in that: described poke rod (4) middle part is provided with rotation seat (44), correspondingly, described line box body (2) bottom surface one side is shaped on the supporting seat (21) of projection, and supporting seat (21) is rotatably assorted with described rotation seat (44).

5, as claimed in claim 4ly be applicable to motor-driven centrifugal switch, it is characterized in that: described supporting seat (21) comprises two securing supports (24) that are arranged in parallel, described rotation seat (44) places between two securing supports (24), and by swivel pin (22) with the two cross-under together.

6, as claimed in claim 5ly be applicable to motor-driven centrifugal switch, it is characterized in that: described torsion spring (23) is through on the described swivel pin (22), one end of torsion spring (23) is by line box body (2) location, and the other end of torsion spring (23) is located by rotation seat (44).

7, as claimed in claim 6ly be applicable to motor-driven centrifugal switch, it is characterized in that: establish block (45) on the described rotation seat (44), the other end of described torsion spring (23) is spacing by this block (45).