CN86209882U

CN86209882U - Multipurpose potentiometer with switch

Info

Publication number: CN86209882U
Application number: CN 86209882
Authority: CN
Inventors: 陈葵
Original assignee: Individual
Current assignee: Individual
Priority date: 1986-12-05
Filing date: 1986-12-05
Publication date: 1987-07-22

Abstract

The utility model relates to a multipurpose potentiometer with a switch. The utility model is provided with a switch contact composed of a sliding contact, a fixed contact or a changeover contact, and the switch contact can also be composed of the sliding contact, the fixed contact and the changeover contact. The utility model can regulate the resistance values of circuits as well as close and open circuits, and can also carry out short connection for partial circuits or all circuits, and meanwhile, the multipurpose potentiometer with a switch has the functions of a potentiometer and a change-over switch. The utility model has the advantages of simple structure, reliable operation and wide ranges of application.

Description

Multipurpose potentiometer with switch

The utility model belongs to a kind of potentiometer of belt switch.

The present potentiometer of belt switch, its switch only plays the effect that opens and closes circuit, function singleness, secondly, self-cleaning contact is to stamp out a dome shaped contact on the slide termination, it with resistance between contact for point.This class contact has a shortcoming, and after using the some time, resistive surface is scratched the formation groove, and many powder under the mill, and these all can cause the consequence of loose contact, and the potentiometer reliability is reduced.

The utility model relates to a kind of belt switch and uses potentiometer more, it has by self-cleaning contact (3), fixed contact (4,5) or two-way contact (10,11,12) make and break contact of Zu Chenging, also can be by self-cleaning contact (3), fixed contact (4,5) and two-way contact (10,11,12) form make and break contact (Fig. 1).It is half-cylindrical that self-cleaning contact (3) is.Fixed contact (4,5) is middle to be the semicolumn groove, is fixed with on the spring leaf (9) of two-way contact (10,11,12) to be semi-cylindrical recesses collets (8).How belt switch can be designed to single shaft single-layer type (Fig. 2 a), multiaxis single-layer type (Fig. 2 b), single shaft multiple field (Fig. 2 c) and orthoscopic (Fig. 2 d) etc. with the profile of potentiometer.

The utility model is formed one with resistance (1) and make and break contact, has the function of potentiometer and diverter switch concurrently.Its self-cleaning contact is to strike out semi-cylindrical recesses (Fig. 1 b) on the slide termination, and its center is by rotating shaft (6) center.The self-cleaning contact of this shape is that line contacts with resistance, and both having made is under worst situation, also is a contact at least.Fixed contact (4,5) (Fig. 1 a, A-A section) is by constituting a little more than resistance board face and the middle contact that is semi-cylindrical recesses.After this shape makes self-cleaning contact and fixed contact contacts, increased contact-making surface between the two, and tangible fluctuating has been arranged in the slide rotation process, made hand that tangible sense of touch be arranged.In order to enlarge the range of application of potentiometer, its fixed contact (7) can be designed to indirect contact switch (Fig. 1 c, B-B section).The indirect contact switch is by insulation projection (8), spring leaf (9), two-way contact (10), normally closed fixed contact (11), often driving fixed contact (12) forms, when the slide (2) of potentiometer did not slide into belt switch contact place, spring leaf (9) was at initial position, under the effect of spring force, contact (10), (11) closure, contact (10), (12) disconnect; When slide slides into belt switch contact place, depress insulation projection (8) by self-cleaning contact (3), interlock spring leaf (9) makes contact (10,11) disconnect contact (10), (12) closure.This switch do not have the contact of electricity between indirect contact switch and the resistance, because of can be connected to respectively in the different circuit with potentiometer.No matter be direct make and break contact (Fig. 1 b), or indirect contact make and break contact (Fig. 1 c), its number of connections can be provided with as required.

How belt switch can be designed to multiple pattern with potentiometer.

1. the single shaft single-layer type (Fig. 2 a): be made of similar present general potentiometer with switch a rotating shaft and one deck potentiometer plate.

2. multiaxis single-layer type (Fig. 2 b): with one heart a potentiometer plate is arranged as three, three axles respectively are with a slide, and they slide on the ring resistance of different radii separately.

3. single shaft multiple field (Fig. 2 c): as three layers of single shafts, be that an axle and three potentiometer plates on three Different Plane are formed, three slides slide on annular concentric resistor disc separately.

4. orthoscopic (Fig. 2 d); It is by linear resistance (1), fixed lever (14), and sliding bar (15), half-cylindrical self-cleaning contact (3), fixed contact (4), potentiometer plate (13) is formed.Sliding bar (15) can be along chute (16) move left and right on the fixed lever (14).Wherein 2,3 may be used on aspects such as stereo system.

The accompanying drawing title:

Fig. 1: belt switch is used the potentiometer structure chart more.

(a) belt switch is used potentiometer more among Fig. 1, (b) fixed contact A-A section, (c) two-way contact B-B section.

Resistance among Fig. 1 (1), slide (2), self-cleaning contact (3), fixed contact (4,5), rotating shaft (6), fixed contact (7) is same with two-way contact (10,11,12), insulation projection (8), spring leaf (9), normally closed contact (10), normal opened contact (12), potentiometer plate (13).

Fig. 2: belt switch is used the pattern of potentiometer more.

(a) single shaft single-layer type among Fig. 2, (b) multiaxis single-layer type, (c) single shaft multiple field, (d) orthoscopic.

Resistance among Fig. 2 d (1), self-cleaning contact (3), fixed contact (4), fixed lever (14), sliding bar (15), chute (16), spring (17).

Fig. 3: belt switch is used potentiometer application example circuit theory diagrams more.

(a) general regulating circuit schematic diagram among Fig. 3, bidirectional triode thyristor (T), diac (D), general belt switch resistor (R), capacitor (C), electrical appliance (Z).

(b) the regulating circuit schematic diagram of using potentiometer (R) to constitute with belt switch more.

Below in conjunction with description of drawings applicating example of the present utility model:

To be used for bidirectional triode thyristor control desk lamp, the circuit of electric iron is an example.At present general regulating circuit such as Fig. 3 a, wherein (Z) is electrical appliance, by bidirectional triode thyristor (T), diac (D), potentiometer (R) (belt switch K), capacitor (C) is formed regulating circuit, before the circuit access failure, potentiometer is in the maximum resistance position, switch (K) is in off-state, and when rotational potentiometer (R) makes switch (K) closure, circuit is connected, continue rotational potentiometer (R), resistance reduces gradually.Make capacitor (C) be charged to can breakdown triggering the voltage required time of diode more and more fast, make the voltage that is added on the electrical appliance (Z) more and more high, when potentiometer rotation to the end, impedance is by short circuit, condenser voltage be charged to can the breakdown triggering diode time the shortest.At this moment controllable silicon is close to standard-sized sheet.Because the puncture voltage of diac is about 40V, therefore bidirectional triode thyristor ability conducting after the supply voltage instantaneous value is 40 volts always, can not accomplish fully whole voltages of power supply are added in the load, at this moment on the bidirectional triode thyristor except before not triggering, outside some " zero load " voltage drop, when flowing through maximum load current, form load voltage on the bidirectional triode thyristor again and fall.The latter produces electric energy loss on bidirectional triode thyristor.Under the situation of the full conducting of bidirectional triode thyristor, the necessity that bidirectional triode thyristor exists in circuit is just little like this.If at this moment the contact of using potentiometer with belt switch deactivates it the bidirectional triode thyristor short circuit more, be in the situation of (I) position as self-cleaning contact among Fig. 3 b.Like this, both whole voltages can be added on the electrical appliance, can bring into play the usefulness of electrical appliance again to greatest extent, reduce the unnecessary electric energy loss on the bidirectional triode thyristor again.Simultaneously, when this potentiometer is in (O) position among Fig. 3 b when self-cleaning contact, potentiometer and capacitor are disconnected fully.Noncontacting switch by bidirectional triode thyristor is formed is in off-state, has played the effect of switch (K) open circuit among Fig. 3 a equally.

At present general potentiometer with switch is all made the band final position, always to the opposite spin of opening, often feels inconvenience when each power cutoff. The utility model can be designed to endless Stop bit is put, and can rotate to 360 degree any directions, and the open and close circuit just makes things convenient for manyly.

The reliability that contacts between the advantage of the present utility model, the self-cleaning contact that has improved potentiometer and resistance; Increase handoff functionality, can improve the usefulness of control loop, of many uses.

Claims

1, a kind of potentiometer of belt switch is characterized in that it has the make and break contact of being made up of self-cleaning contact [3], fixed contact [4,5] or two-way contact [10,11,12].

2, according to the described potentiometer of claim 2, the make and break contact of it is characterized in that its self-cleaning contact (3) also can be arranged, fixed contact (4,5) and two-way contact (10,11,12) being formed.

3, potentiometer according to claim 1 is characterized in that self-cleaning contact (3) is half-cylindrical.

4, according to the described potentiometer of claim 3, it is characterized in that being semi-cylindrical recesses in the middle of the fixed contact (4,5), be fixed with the collets (8) that are semi-cylindrical recesses on the spring leaf (11) of two-way contact (10,11,12).

5,, it is characterized in that profile can be designed to the single shaft single-layer type, multiaxis single-layer type, single shaft multiple field and orthoscopic etc. according to the described potentiometer of claim 4.