CN2266792Y

CN2266792Y - Probing bar type temperature-controlling plug

Info

Publication number: CN2266792Y
Application number: CN 96209555
Authority: CN
Inventors: 曹开华
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-05-20
Filing date: 1996-05-20
Publication date: 1997-11-05
Anticipated expiration: 2006-05-20

Abstract

The utility model relates to a probing bar type temperature-controlling plug. A double metal thermal induction rod is installed inside a casing, an oscillating arm is installed on the double metal thermal induction rod, and a fixed arm is arranged above the double metal thermal induction rod. An elastic sheet switch is arranged below the other end of the fixed arm, and the elastic sheet switch is composed of an upper elastic sheet and a lower elastic sheet. A post rod is screwed on the fixed arm, and a turn button is installed on the post rod. The utility model is characterized in that at least more than one convex pole is arranged on the bottom surface inside the casing, and is positioned below the upper elastic sheet of the elastic sheet switch. When the temperature of the utility model is quite low, the upper elastic sheet can be blocked by the convex pole, the upper elastic sheet no longer falls, and the power failure can be maintained. The elastic sheet switch can not switch on under the closed state because of the low temperature.

Description

Probing bar type temperature control plug

The utility model is about a kind of probing bar type temperature control plug, refer to especially a kind of when low temperature by projection block elastic sheet switch on shell fragment and keep outage, in the time of can not making elastic sheet switch in off position because of the low temperature probing bar type temperature control plug of conducting voluntarily.

Existing most family is many with the electric heater heating or the electrothermal furnace cooking, and electric heater or electrothermal furnace are a big electric current, high-power electrical equipment, for preventing that electric heater, electrothermal furnace excessive loads from producing damage, therefore in the plug of lead, be provided with the sensible heat breaker device, it is cut off the power supply when being higher than design temperature avoids electric heater, electrothermal furnace to continue heating and damage, or reduction of service life, and avoid meeting accident etc.

Above-mentioned sensible heat breaker device, as shown in Figure 5, be installing a pair of metal fever inductive rod b in housing a, and this bimetallic thermoinduction rod is a hollow pipe c, installing one metal bar d in its pipe, and install a swing arm e in mouth of pipe place, and the outer end of this metal bar d is fixed on the appropriate location of swing arm e, be provided with a fixed arm f again in the top of hollow pipe c, other end below in this fixed arm f is equiped with elastic sheet switch g, shell fragment g2 is formed and this elastic sheet switch g reaches down by last shell fragment g1, and the end of last shell fragment g1 is the terminal top that is positioned at swing arm e, on fixed arm f, be installed with a push rod h again, go up installing one knob i in push rod h, and this push rod h leans on elastic sheet switch g, rotary knob i makes push rod h pushing shell fragment g2 down, make elastic sheet switch g be able to conducting or open circuit, but and nationality by rotary knob i the pushing deviation post of shell fragment g2 and design temperature down.

And above-mentioned bimetallic inductive rod b in order to sensing temperature, be hollow pipe c and metal bar d by two kinds of different coefficients of expansion on it, the distortion (coefficient of expansion of hollow pipe c is greater than the coefficient of expansion of metal bar d) that produces different length in its back that is heated, and make swing arm e be offset downward or upward, upwards skew of this swing arm e when ambient temperature raises, and be able to the last shell fragment g1 of elastic sheet switch g is upwards moved on the top, shell fragment g1 and following shell fragment g2 are separated and cut off the power supply; Otherwise when ambient temperature reduced, this swing arm e offset downward and makes the last shell fragment g1 of elastic sheet switch g and following shell fragment g2 keep in touch, and is in "on" position, makes electric heater continue heating.

Yet in frigid zone country, sometimes have the weather of ultralow temperature, the temperature anomaly of external environment is low, this moment is if rotary knob i has made push rod h downwards and pass elastic sheet switch g, lean against on the swing arm e and go up shell fragment g1, and make that shell fragment g1 separates with following shell fragment g2 on this, this moment, this elastic sheet switch g was in closing state, right because extraneous temperature reduction, lean against on the swing arm e and go up shell fragment g1, and this swing arm e is connected on the bimetallic inductive rod b, this metal inductive rod b still can respond to extraneous temperature, and since the coefficient of expansion of hollow pipe c greater than the coefficient of expansion of sheet metal d, therefore, this fork e still can continue down to be offset when low temperature, though elastic sheet switch g has been in closed condition, makes that because of ambient temperature is low fork e still continues to offset downward, and make that going up shell fragment g1 follows fork e to move down, make eventually that shell fragment g1 contacts with following shell fragment g2 this on, make elastic sheet switch g be conducting state thereby startup electric heater; Therefore, be under the situation of closing, elastic sheet switch g connected again automatically start electric heater at elastic sheet switch g, very easy causing danger in such cases, if family is medium-term and long-term unoccupied, then meets accident easily, and very waste power supply.

Inventor of the present utility model is at thoughts on the existing sensible heat breaker device of probing bar type temperature control plug device in housing that is used on the electric heater, though be under the situation of closing at elastic sheet switch g, still can be subjected to the influence of external environment low temperature and make automatically conducting and start electric heater of elastic sheet switch g, very easy causing danger in such cases, and the various shortcoming of very wasting power supply, the purpose of this utility model is to provide a kind of structure improved probing bar type temperature control plug, this plug is positioned at the housing inner bottom surface and is positioned at the projection that is provided with at least more than one on the elastic sheet switch below the shell fragment, make that living in shell fragment by the projection shelves when low temperature environment no longer falls down to keep outage, do not open voluntarily because of low temperature in the time of can not making elastic sheet switch in off position, so can avoid meeting accident, and can save power supply.

The inventor sets about design, finally design a kind of a pair of metal fever inductive rod of in a housing, installing, this bimetallic thermoinduction rod is to be a hollow pipe, installing one metal bar in pipe, and install a swing arm in mouth of pipe place, the outer end of this sheet metal is fixed on the appropriate location of swing arm, be provided with a fixed arm in the top of hollow pipe again, other end below in this fixed arm is equiped with elastic sheet switch, shell fragment was formed under this elastic sheet switch was reached by last shell fragment, and the end of last shell fragment is the terminal top that is positioned at swing arm, on fixed arm, be installed with a push rod again, installing one knob on push rod, and this push rod is to lean on elastic sheet switch, rotary knob makes push rod pushing shell fragment down, make elastic sheet switch be opened or close, it is characterized in that: this housing inner bottom surface and be positioned at the below of shell fragment on the elastic sheet switch and establish at least more than one projection, make and when crossing low temperature, can no longer fall down by means of block shell fragment by projection, shell fragment is blocked by projection and keep outage, in the time of can not making elastic sheet switch in off position because of low temperature voluntarily conducting meet accident avoiding, and saved power supply.

Below in conjunction with accompanying drawing, the utility model is described in further details.

Fig. 1 is a three-dimensional structure diagram of the present utility model;

Fig. 2 is an assembled sectional view of the present utility model;

Fig. 3 is another embodiment assembled sectional view of the present utility model;

Fig. 4 is an another embodiment combination stereogram of the present utility model;

Fig. 5 is the constitutional diagram of prior art;

As Fig. 1, shown in Figure 2, the utility model mainly is an installing a pair of metal fever inductive rod 2 in a housing 1, this bimetallic thermoinduction rod 2 is a hollow pipe 21, installing one metal bar 22 in pipe, and install a swing arm 23 in mouth of pipe place, and the outer end of this metal bar 22 is fixed on the appropriate location of swing arm 23, and the coefficient of expansion of this hollow pipe 21 is greater than metal bar 22, be provided with a fixed arm 24 again in the top of hollow pipe 21, other end below in this fixed arm 24 is equiped with elastic sheet switch 25, shell fragment 252 was formed under this elastic sheet switch was reached by last shell fragment 251, and the end of last shell fragment 25 1 is the terminal top that is positioned at swing arm 23, be provided with a push rod 26 in fixed arm 24 tops again, installing one knob 27 on push rod 26, this push rod 26 is to lean on elastic sheet switch 25, rotary knob 27 makes push rod 26 pushings shell fragment 252 down, make elastic sheet switch 25 be able to conducting or open circuit, on housing 1 inner bottom surface and be positioned at elastic sheet switch 25 on be provided with at least more than one projection 28 below the shell fragment 251.

According to above-mentioned structure, when the utility model is implemented as shown in Figure 2, when normal condition, can make push rod 26 pushing elastic sheet switchs 25 with design temperature by first rotary knob 27, this elastic sheet switch 25 is to be conducting state, can be by the temperature in the bimetallic thermoinduction rod 2 sensing external worlds, if it is indoor when having reached the temperature that sets, because the coefficient of expansion of these bimetallic thermoinduction rod 2 hollow pipes 21 is greater than the coefficient of expansion of metal bar 22, therefore the length deformation of hollow pipe 21 is greater than metal bar 22, make swing arm 23 upwards be offset, and the last shell fragment 251 with elastic sheet switch 25 upwards moves on the top simultaneously, make the

last shell fragment

251 and 252 separation of following shell fragment of elastic sheet switch 25 form off state, therefore make electric heater no longer heat, when if ambient temperature is lower than the design temperature that had before set again, this hollow pipe 21 shrinks sooner than metal bar 22, therefore this swing arm 23 can offset downward, and the last shell fragment 251 of elastic sheet switch 25 is moved down along with swing arm 23, shell fragment 251 is contacted with following shell fragment 252, make elastic sheet switch 25 become conducting state again, this electric heater promptly begins heating again; And when not in use, rotatable knob 27 makes push rod 26 pass the following shell fragments 252 of elastic sheet switchs 25 downwards, and itself and last shell fragment 25 1 are separated, this elastic sheet switch 25 off state, so this electric heater promptly can not heat.

And when 25 one-tenth off states of elastic sheet switch, and the external world is the weather of utmost point low temperature, this bimetallic thermoinduction rod 2 still can the sensing external world low temperature, hollow pipe 21 continues to shrink makes fork 23 continue to offset downward, and on housing 1 inner bottom surface and last shell fragment 251 belows that are positioned at elastic sheet switch 25 be provided with at least more than one projection 28, when meeting low temperature, this projection 28 promptly can block shell fragment 251, make it no longer continue down to be offset, thereby down be offset conducting automatically because of swing arm 23 when avoiding when 25 one-tenth of elastic sheet switchs open circuit, running into extremely low temperature, preventing unexpected the generation, and can save the energy.

As shown in Figure 3, this projection 28 also can be designed to a link stopper 30, and be positioned at the below of swing arm 23, when 25 one-tenth of elastic sheet switchs open circuit and extraneous temperature when low, should go up shell fragment 251 along with swing arm 23 offsets downward, this swing arm 23 this moment can be withstood by block 30, makes it no longer continue down to be offset, shell fragment 251 can not contacted with following shell fragment 252, can avoid elastic sheet switch 25 under off state, to run into low temperature equally and conducting automatically.

As shown in Figure 4, this projection 28 also can be designed to cross bar horizontal more than 31, and be positioned at the both sides, below of shell fragment 251, can when low temperature, block shell fragment 251 equally, it is not offset downward to avoid elastic sheet switch 25 conducting automatically under low temperature and off state by cross bar 31.

Claims

1, a kind of probing bar type temperature control plug, be included in installing a pair of metal fever inductive rod in the housing, this bimetallic thermoinduction rod is a hollow pipe, installing one metal bar in pipe, and install a swing arm in mouth of pipe place, the outer end of this metal bar is fixed on the appropriate location of swing arm, be provided with a fixed arm in the top of hollow pipe again, other end below in this fixed arm is equiped with elastic sheet switch, shell fragment was formed under this elastic sheet switch was reached by last shell fragment, and the end of last shell fragment is the terminal top that is positioned at swing arm, is installed with a push rod on fixed arm, installing one knob on push rod, and this push rod is to lean on elastic sheet switch, rotatable knob makes push rod pushing shell fragment down, makes the elastic sheet switch can conducting or open circuit, and it is characterized in that:

On the housing inner bottom surface and be positioned at elastic sheet switch on be provided with at least more than one projection below the shell fragment, make that can block shell fragment by projection when crossing low temperature no longer down is offset, to keep off-position.

2, probing bar type temperature control plug as claimed in claim 1 is characterized in that described projection also can be designed to a link stopper, and is positioned at the below of the swing arm of bimetallic thermoinduction rod.

3, probing bar type temperature control plug as claimed in claim 1 is characterized in that described projection also can be designed to more than one cross bar, and is positioned at the below of shell fragment.