CN2310886Y

CN2310886Y - Double automatic speed change device for electric fan

Info

Publication number: CN2310886Y
Application number: CN 97206649
Authority: CN
Inventors: 贾根祥
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-02-28
Filing date: 1997-02-28
Publication date: 1999-03-17
Anticipated expiration: 2007-02-28

Abstract

The utility model relates to a double automatic speed change device for an electric fan, comprising a first timer, a speed change coil which is connected with the first timer, and a first speed selecting switch and a second speed selecting switch which are connected with the speed change coil respectively. The utility model is characterized in that the utility model also comprises a linked switch which is connected with the second speed selecting switch and forms a linkage with the second speed selecting switch, a second timer which is connected in series with the linked switch and is provided with a time memory implement, and a relay which is connected in series with the second timer. Because the double timer technical proposal is adopted, automatic speed change can be realized, and the utility model can realize timing operation after the speed change.

Description

The two throw-over devices automatically of electric fan

The utility model relates to the two throw-over devices automatically of a kind of electric fan.

The various ceiling fans of Chu Shouing, table fan generally all are provided with regularly and arrangements for speed regulation in the market, but artificial direct control is all wanted in the adjusting of its speed, and be very inconvenient.Chinese patent application number 87213551.9 disclosed electric fan timing automatic throw-over devices, though the automatic throw-over of electric fan energy after the regular hour, but the electric fan behind the throw-over is closed without manual operation can only be with the invariablenes turning speed running of previous setting, like this under the situation that the temperature difference is big between the before midnight in summer and the time after midnight, even low-grade wind speed but continuous running also are easy to the people is caught a cold, be the needs that the sort of electric fan all has been difficult to satisfy people so existing nothing is appointed.

The purpose of this utility model provides a kind of electric fan, not only possesses the timing automatic throw-over, and can carry out the timing running behind the timing automatic throw-over, to satisfy people's needs.

The purpose of this utility model is achieved in that the two throw-over devices automatically of a kind of electric fan, and it comprises:

First timer comprises timer that has a moving together contact and the time selection switch that is connected with timer, is used to control operating time and the conversion of control power supply input and the energising and the outage of relay of electric fan;

Speed control coil, it is connected with described first timer, is used to control the rotating speed of motor;

First rate selection switch and second speed selector switch, they are connected with speed control coil respectively, in order to the output voltage of selecting speed control coil so that the speed of control motor;

It is characterized in that it also comprises:

Gang switch, it is connected linkage with the second speed selector switch, is used for the energising and the outage of the relay of control wiring;

Second timer comprises timer, the time selection switch and the time memory device that with timer link to each other fixedly connected with timer, and it and described gang switch polyphone are used for timing and control timing initial point;

Relay, it is connected with second timer, is used for the disconnection and closure of the relay contact (normally-closed contact KA1, normally opened contact KA2, KA5 and KA6) of control wiring.

Owing to adopted the technological scheme of above-mentioned dual timer, electric fan is throw-over automatically not only, and can regularly turn round behind throw-over, has satisfied people's needs widely.Two groups of timing device, under normal situation mutual control, conversion mutually, can also use separately respectively as the common timing governor of two covers simultaneously, be particularly suitable for using away from the backwoodsman user of maintenace point, because, do not influence another set of use when one of them speed regulator fault.

Below in conjunction with drawings and Examples the utility model is further described.

Fig. 1 is the two throw-over manipulated or operated apparatus automatically of electric fan;

Fig. 2 is the location diagram of braking plate and relay and second timer;

Fig. 3 is the bispin button adjusting speed construction of switch schematic representation of the two throw-over devices automatically of electric fan;

Fig. 4 is the A-A cross-section structure of Fig. 3;

Fig. 5 is the B-B cross-section structure of Fig. 3.

By Fig. 1 and Fig. 2 as can be known, the timer of first timer T1 has three contacts, and a is a normally opened contact, and b is the time-delay break contact, and c is the time-delay moving together contact; The timer of second timer T2 has two contacts, and a ＇ is a normally opened contact, and b ＇ is the time-delay break contact.When people carry out two throw-over automatically, at first the time selection K switch 1 with first timer T1 places time-delay break contact b, the time selection K switch 2 of second timer T2 places time-delay break contact b ＇, the first rate selection

switch K3 places

1,2,3, arbitrary position in 4 and 5, second speed selector switch K4 places 1 ＇, 2 ＇, 3 ＇, arbitrary position among 4 ＇ and 5 ＇, gang switch K5 and K6 interlock simultaneously close, this moment, source current passed through scheduling coil B through the b contact of first timer T1, the first speed governing selector switch K3, the normally-closed contact KA1 power supply motivation running of relay, the closure of the normally-closed contact KA3 of relay J makes power supply through gang switch K5 starter tutorial light 6 simultaneously.Because the disconnection of the normally opened contact KA2 of relay J, second speed K switch 4 selected speed can't be realized, end owing to braking plate 8 is fixed on the interior moving plate of relay simultaneously, when relay is not switched on, the other end contact of braking plate 8 is on the timer of second timer, as shown in Figure 2, play the effect of picking up counting of resistance system timer, this moment, second timer T2 was in state time memory.When first timer T1 timing arrives the fixed time, the b contact automatic disconnection of first timer T1, supply disconnecton.Because the disconnection of b contact, K1 is incorporated into the c contact automatically, this moment power supply by the c contact of first timer T1 through gang switch K6 through second timer T2 engage relay, behind the relay power, this moment normally opened contact KA2, KA4, KA5 and KA6 closure, KA1 and KA3 disconnect, be fixed on braking plate 8 on the relay J simultaneously and leave the timer of second timer T2, as shown in Figure 2, this moment, second timer T2 picked up counting, source current by the c contact of first timer T1 through the contact of relay KA6, speed control coil B, the second speed control switch K4, the running of KA2 power supply machine, the closure of the normally opened contact KA4 of relay makes tutorial light 7 starters simultaneously.Like this electric fan successfully from a kind of wind speed excessively to another kind of wind speed, arrive the time of setting until second timer 2, power supply is just cut off automatically, electric fan shuts down.

Equally also can be transformed into the wind speed of first timer and the control of first speed switch from the wind speed of second timer and the control of second speed switch.

If do not need regularly running behind the electric fan timing automatic throw-over, as long as the time selection K switch 2 of second timer T2 is placed a ＇ contact, at this moment second timer T2 does not work, and electric fan is running always behind the timing throw-over.

If electric fan does not need throw-over only to need regularly running or when often opening, can use wherein a cover rate selection switch and timer or a cover rate selection switch to get final product.

When above-mentioned rate selection switch K3, K4 also can make bispin button adjusting speed switch, as Fig. 3, Fig. 4 and shown in Figure 5, with a swing arm 1, be enclosed within lower-layer insulation sheet 2, middle level insulating trip 3, upper strata insulating trip 4 on the swing arm, cover on the

insulating trip tinsel

51,52 and 53 and energising

spring

61 and 62 form.Lower-layer insulation sheet 2 is fixedlyed connected with swing arm 1 or is made disjunctor, middle level insulating trip 3 and upper strata insulating trip 4 flexibly connect with swing arm 1, on the internal surface of lower-layer insulation sheet 2 and upper strata insulating trip 4, fixed the

energising spring

61 and 62 of two bendings that vary in size respectively, the energising spring contacts with the middle level insulating trip respectively, the corresponding skin that covered is the tinsel 52 of five lamellules 51 and one and half garden annulars on the two sides of middle level insulating trip, and internal layer is two symmetrically arranged half garden annular sheet metals 53.

Claims

1. two throw-over devices automatically of an electric fan, it comprises:

It is characterized in that it also comprises:

2. the two throw-over devices automatically of a kind of electric fan according to claim 1, it is characterized in that: device time memory in the second timer is made by a braking plate, the one end is fixedly connected in the relay, and the other end does not contact with the timer of second timer when relay is switched on.

3. according to claim 1 or the two throw-over devices automatically of 2 described a kind of electric fans, it is characterized in that: rate selection switch is a bispin button adjusting speed switch, by a swing arm, be enclosed within the lower-layer insulation sheet on the swing arm, the middle level insulating trip, the upper strata insulating trip, the tinsel and the energising spring that cover on the insulating trip are formed, lower-layer insulation sheet is fixedlyed connected with swing arm, middle level insulating trip and upper strata insulating trip and swing arm flexibly connect, on the internal surface of lower-layer insulation sheet and upper strata insulating trip, fixed the energising spring of two bendings that vary in size respectively, the energising spring contacts with the middle level insulating trip respectively, and the corresponding skin that covered is the tinsel of five lamellules and one and half garden annulars on the two sides of middle level insulating trip, internal layer is two symmetrically arranged half garden annular sheet metals.