CN2082455U

CN2082455U - Mechanical timer

Info

Publication number: CN2082455U
Application number: CN 91202451
Authority: CN
Inventors: 陈德祯
Original assignee: Native State Owned Shantou Bell Plant
Current assignee: Native State Owned Shantou Bell Plant
Priority date: 1991-02-08
Filing date: 1991-02-08
Publication date: 1991-08-07

Abstract

A mechanical timer for a fan is mainly characterized in that: the original mechanical timer is improved, a notch is formed on a timing cam of the timer, a fixed contact connected with the other tap of the fan speed regulator is additionally arranged, when a braking plate of the timer falls into the notch, a movable contact connected with a power supply lead-in wire is connected with the additionally arranged fixed contact, and the rotating speed is simultaneously selected in the timing process of the timer, so that a speed regulation key can be omitted, the appearance is improved, and the operation is simplified.

Description

Mechanism type timer

The utility model relates to a kind of mechanical timer of electric fan.

The mechanical timer of selling on the existing market, mainly be to rotate, on this cam, have a breach, utilize the edge of cam or breach to withstand keep plate by escapement control timing cam, disconnect thereby make pair of contact contact conducting or break away from, reach timing controlled.Owing to have only a breach and pair of contact on the cam, this timer can only carry out timing break-make control to a certain rotating speed, in addition, and the speed regulator that is used with this timer, must on fan panel, establish the speed governing button, during use, or first turn timer, the back is by last speed governing button, press the speed governing button earlier, back turn timer must divide two steps to finish, comparatively trouble in the operation.

The purpose of this utility model is to provide a kind of improved mechanical timer, and it not only can realize regularly break-make control, but also can realize simultaneously rotating speed is carried out Direct Transform.

Its objective is such realization: this timer comprises that an escapement is used to control rotating speed;

One rotating shaft is used for to practicing on the above-mentioned escapement;

Practice cam on one, it and above-mentioned rotating shaft are fixed;

One cam regularly, by above-mentioned go up to practice to drive when practicing on the cam turn over angle when certain, by above-mentioned escapement control, get back to the home position lentamente again, have first breach on this timing cam, be used for outage control;

One moving contact is used for being connected with power lead-ining line;

First fixed contact is used for being connected with a tap of fan governor;

One keep plate when it is positioned on the edge of above-mentioned timing cam, makes above-mentioned moving contact contact conducting with first fixed contact, and simultaneously, the reed of keep plate breaks away from above-mentioned escapement, allows escapement drive above-mentioned timing cam and rotates; And when keep plate fell into first breach that above-mentioned timing cam opens, the above-mentioned moving contact and first fixed contact broke away from and disconnect, and simultaneously, the reed of keep plate is controlled above-mentioned escapement and quit work;

Second fixed contact is used for being connected with another tap of speed regulator, and it is positioned at the below of first fixed contact;

Also have second breach on the above-mentioned timing cam, its depth ratio first breach is slightly dark, makes that above-mentioned moving contact contacts conducting with second fixed contact when above-mentioned keep plate falls into this breach, and simultaneously, the reed of keep plate is controlled above-mentioned escapement and quit work.

Timer of the present utility model, owing on timing cam, have a breach again, and set up a fixed contact, make that moving contact contacts conducting with the above-mentioned fixed contact of setting up when keep plate falls into this breach, make timer not only have effect regularly, and can also directly realize conversion to rotating speed, thus the speed governing button can be saved, simultaneously, simplified operation, timing and two kinds of operations of speed governing can once be finished.

Figure one is a kind of concrete structure schematic diagram of the utility model.

The utility model is described in further detail below in conjunction with accompanying drawing:

With reference to timer shown in Figure 1, by clockwork spring (not drawing among the figure), great wheel 7, two take turns 3, three-wheel 4, four-wheel 5, escape wheel 6, the escapement that fork pendulum 8 is formed, by practicing on the rotating shaft 15, and through last experienced cam 1 drive, timing cam 2 turns over angle when certain, first breach 16 is arranged on timing cam 2, timer inside also is provided with and is used for the moving contact 11 that is connected with power lead-ining line, the fixed contact 12 that is connected with speed regulator one tap, and be used to control the keep plate 9 that moving contact 11 contacts and breaks away from fixed contact 12, when keep plate 9 is positioned at the edge of timing cam 2, keep plate 9 makes moving contact 11 contact conducting with first fixed contact 12, fan is with a certain rotational speed, and when keep plate 9 falls into first breach, the moving contact 11 and first fixed contact 12 break away from, simultaneously, the reed of keep plate 9 is pushed down fork pendulum 8, fan stops operating, in order to realize the purpose of this utility model, set up second fixed contact 10 in timer inside, it is connected with another tap of speed regulator, be positioned at the below of first fixed contact, and on timing cam 2, have second breach 17, its depth ratio first breach 16 is slightly dark, make when turn rotating shaft 15 when keep plate 9 falls into second breach 17, moving contact 11 contacts conducting with second fixed contact 10, simultaneously, the reed of keep plate 9 is pushed down fork pendulum 8, train quits work, and at this moment, fan will rotate down with another rotating speed always.

Consider the summer in sweltering heat, people wish to enter the sleep forefan with big rotational speed, but the requirement that rotate with less rotating speed always the back of sleeping soundly, as long as second breach 17 is opened forming the certain angle place with first breach 16, just can meet the demands.Suppose that this moment, keep plate was positioned at first breach, 16 places, as long as turn rotation axis 15 is crossed a low-angle in the counterclockwise direction, keep plate 9 will be raised up on the edge of timing cam 2, moving contact 11 contacts conducting with first fixed contact 12, fan is with a certain rotational speed (arrange this rotating speed and be big rotating speed), through behind the certain hour, when escapement drives timing cam and walks to keep plate 9 and fall into second breach 17, moving contact 11 contacts conducting with second fixed contact 10, fan is just with less rotational speed, and simultaneously, the reed of keep plate 9 is pushed down fork pendulum 8, the rotation train quits work, and fan is rotated down always.

Claims

1, a kind of mechanical timer of electric fan comprises:

A, an escapement are used to control rotating speed;

B, a rotating shaft are used for to practicing on the above-mentioned escapement;

Practice cam on the C,, it and above-mentioned rotating shaft are fixed;

D, one is cam regularly, by above-mentioned go up to practice to drive when practicing on the cam turn over angle when certain, by above-mentioned escapement control, get back to the home position lentamente again, have first breach on this timing cam, be used for outage control;

E, a moving contact are used for being connected with power lead-ining line;

F, first fixed contact are used for being connected with a tap of fan governor;

G, a keep plate when it is positioned on the edge of above-mentioned timing cam, make above-mentioned moving contact contact with first fixed contact, and simultaneously, its reed breaks away from above-mentioned escapement, allow escapement work; And when keep plate fell into first breach that above-mentioned timing cam opens, the above-mentioned moving contact and first fixed contact broke away from, and simultaneously, the reed of keep plate is controlled above-mentioned escapement and quit work;

It is characterized in that it also comprises:

H, second fixed contact are used for being connected with another tap of speed regulator, and it is positioned at the below of first fixed contact;

Have second breach on I, the above-mentioned timing cam, its depth ratio first breach is slightly dark, makes that above-mentioned moving contact contacts conducting with second fixed contact when above-mentioned keep plate falls into this breach, and simultaneously, the reed of keep plate is controlled above-mentioned escapement and quit work.

2, according to the timer of claim 1, it is characterized in that: described second breach open with the angled part of first breach.