CN2464759Y

CN2464759Y - Water drainage electric motor

Info

Publication number: CN2464759Y
Application number: CN 01215129
Authority: CN
Inventors: 李翠明; 何少琼
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-02-09
Filing date: 2001-02-09
Publication date: 2001-12-12
Anticipated expiration: 2011-02-09

Abstract

The utility model relates to a water drainage motor, which comprises a combined switch, a cam wheel, a micromotor, an electromagnet, a stopping wheel, a driving gear component and a traction rod. The utility model is characterized in that the combined switch comprises two double contact switches (K1, K2) which are composed of two sets of spring pieces that are respectively installed on an identical plane in a switch base, wherein, the double contact switches (K1, K2) are respectively connected between external power supply lines (L1, L2) and the micromotor. The cam wheel has a single layer and two sections of curved surfaces, and is installed between the two sets of spring pieces in the switch base. Because of smaller height, simple structure and high reliability, the water drainage motor of the utility model can be widely used on various washing machines.

Description

A kind of drain motor

The utility model relates to a kind of drain motor, relates in particular to the switch of two-stage stroke formula traction drain motor of washing machine drainage device and the improvement of control cam.

Chinese patent 97109997.9 discloses a kind of two-stage stroke traction gear driving motor that is used for the washing machine drainage device, this washing machine has impeller and the Washing dewatering tub that rotates in washing or rinse cycle, described geared dynamo comprises: a motor, in order to produce the torque of water supply and sewage device running; Upper and lower output cam, its radius is different and be installed on the same axle, by the motor torque motion; Be connected to down the connecting rod of output cam, thereby spur an end of combining mechanism in order to the attaching parts of pulling drainage arrangement; Double-contact is in order to according to the rotation of output cam and the on/off relay point; And the external connection terminals that is connected with the contact.Though above-mentioned two-stage stroke traction electric machine can be realized two kinds of stroke purposes, because of all being continues to use traditional overlapping compound mode of reed switch multilayer and adopt the control of multilayer cam, so there is the more high shortcoming of the height of complex process and switch sections.

The purpose of this utility model is that reed switch and cam are improved, and the two-period form drain motor that a kind of technology is simple, assembling is highly lower is provided.

To achieve these goals, the technical solution adopted in the utility model is: drain motor comprises stacked switch, cam, micro machine, electromagnet, stopping wheel, driving gear component, drawing pull bar, stopping wheel places one side of electromagnet, and mesh with driving gear component, micro machine is by driving gear component traction drawing pull bar and driving cam, it is characterized in that: described stacked switch is by be contained in the double contact switch K1 that conplane two groups of spring leafs are formed respectively in switch base, K2, double contact switch K1, K2 is connected to external power cord L1, between L2 and the micro machine, cam is an individual layer and the cam that two sections curved surfaces are arranged, and it is installed between interior two spring plate group of switch base.

Adopt the drain motor of structure described in the utility model, the multilayer cam is changed into the individual layer cam, the multiple layer combination switch changes the individual layer stacked switch into, can effectively reduce the height of drain motor, and make drain motor can control the two-pass motion mode reliably, thereby make washing machine can utilize the effectively various washing states of control of these modes, because drain motor height of the present utility model is less, simple in structure, the reliability height can be widely used on all types of washing machines.

Below in conjunction with accompanying drawing the utility model is described in detail.

Fig. 1 individual layer double contact switch of the present utility model assembly;

Fig. 2 individual layer cam of the present utility model;

Fig. 3 drain motor structural representation described in the utility model;

One of working state schematic representation of Fig. 4-1 drain motor;

Two of the working state schematic representation of Fig. 4-2 drain motor;

Three of the working state schematic representation of Fig. 4-3 drain motor;

Fig. 5 drain motor control circuit of the present utility model schematic diagram.

Embodiment:

As Fig. 1,2, shown in 3, drain motor comprises stacked switch 1, cam 2, micro machine 3, electromagnet 4, stopping wheel 5, wheel assembly 6 is nibbled in transmission, rack-and-pinion drawing pull bar 7, stopping wheel 5 places one side of electromagnet 4, and it is meshing with driving gear component 6, micro machine 3 is by driving gear component 6 drawing pull bar 7 and driving cam 2, described stacked switch 1 is by be contained in the double contact switch K1 that conplane two groups of spring leafs are formed respectively in switch base, K2, K1, K2 is connected to external power cord L1, between L2 and the micro machine 3, cam 2 is an individual layer and the cam that the equal curved surface of two sections radiuses is arranged, it is installed on two spring plate group K1 in the switch base, between the K2.

The operation principle of drain motor of the present utility model is as follows:

When the rack-and-pinion drawing pull bar 7 of drain motor was in 0 stroke state, control cam 2 made the K1 closure of individual layer double contact switch, and K2 opens, and sees Fig. 4-1 and Fig. 5.Switch on when external control circuit makes L1 and N, micro machine 3 gets electric and turns round, and slows down and drives rack-and-pinion drawing pull bar 7 by driving gear component 6 and make the straight line pulling motion, and meanwhile the projection on the final stage gear drives cam 2 rotations.When 7 actions of rack-and-pinion pull bar arrive first section predetermined stroke, cam 2 makes K switch 2 closures, and K1 opens, see Fig. 4-2, micro machine 3 dead electricity and stall, the distraction procedure of rack-and-pinion drawing pull bar 7 stops, but this moment, electromagnet was still switched on, stopping wheel 5 is braked by electromagnet 4, though rack-and-pinion drawing pull bar 7 is subjected to the external force effect, it is constant still can to rest on original position, after the external control circuit outage, electromagnet 4 discharges, stopping wheel 5 revolutions, and rack-and-pinion drawing pull bar 7 is returned to 0 travel position under external force.

If treat that drain motor is after first section stroke ended and kept the some time, external control circuit keeps under the condition of energising at L1, L2 is also switched on, then micro machine 3 electric after, can continue to drive 7 tractions of rack-and-pinion drawing pull bar until second section travel position by reduction gear component, cam 2 is the K2 switch opens, micro machine 3 outages, this moment, electromagnet 4 was still switched on, under electromagnet 4 and stopping wheel 5 effects, rack-and-pinion drawing pull bar 7 keeps in the K2 de-energized, until L1, the L2 outage, rack-and-pinion drawing pull bar 7 could be returned to 0 travel position under external force.

If external control circuit L1, L2 are a utmost point, N is that the mode of a utmost point is switched on to the traction drain motor, and situation is the same as described above, but during to first section stroke, though cam 2 is opened K1, and K2 is closed before this, micro machine 3 still electric rotation, when second section stroke, cam 2 is all opened K2, K1, sees Fig. 4-3, micro machine 3 dead electricity stalls, rack-and-pinion drawing pull bar 7 is motionless in this position, and remains to till L1, the L2 outage, and just power effect outside is returned to 0 travel position.

From as seen last, as long as change different power supply modes to L1 and L2 by external control circuit, can 1, realize short stroke; 2, short stroke, long stroke; 3, three of long stroke kinds of working methods.

Claims

1, a kind of drain motor, comprise stacked switch (1), cam (2), micro machine (3), electromagnet (4), stopping wheel (5), driving gear component (6), drawing pull bar (7), stopping wheel (5) places one side of electromagnet (4), and mesh with driving gear component (6), micro machine (3) is by driving gear component (6) traction drawing pull bar (7) and driving cam (2), it is characterized in that: described stacked switch (1) is by be contained in the double contact switch K1 that conplane two groups of spring leafs are formed respectively in switch base, K2, two electric shock K switch 1, K2 is connected to external power cord L1, between L2 and the micro machine (3), cam (2) is an individual layer and the cam that two sections curved surfaces are arranged, and it is installed on two spring plate group K1 in the switch base, between the K2.

2, by the described drain motor of claim 1, it is characterized in that: described drawing pull bar (7) is the rack-and-pinion pull bar.

3, by the described drain motor of claim 1, it is characterized in that: the radius of two sections curved surfaces of individual layer cam (2) is identical.