CN2140557Y - Temp regulating switch - Google Patents

Abstract

The utility model relates to a temperature control switch, belonging to the technical field of double-metal sheet temperature-control switch. Temperature-sensing elements and the dynamic and static contacts of the switch are sealed in a fine sealing cavity, and temperature-sensing elements and the dynamic and static contacts of the switch are isolated from the medium to be temperature measured. A mechanism used for slightly regulating the operating temperature of the switch is arranged. Various temperature controlled switch series with fixed operating temperature are convenient for being made. The utility model has the advantages of simple structure, small size, and fast temperature response, and an over temperature protective circuit of a temperature alarm or various motor electric appliances can be formed by adding the utility model on a power source, an electronic buzzer or a relay.

Description

Temp regulating switch

The utility model belongs to the bimetal plate temperature controling switch technical field.

Existing double-metal sheet type temperature detect switch (TDS) for example thermal relay, electric iron thermostat etc. all is to utilize the bimetal leaf temperature distortion to start the switching function that contact is realized connecting and disconnecting of the circuit.Its shortcoming is that volume is bigger, and complex structure is difficult to the accurately operating temperature of by-pass cock, and its temperature element and switch contact directly contact with tested temperature control medium, and vulnerable to pollution corrodes, and influences useful life.

Goal of the invention of the present utility model be a kind of operating temperature of being convenient to by-pass cock of design, simple in structure, volume is little, the bimetal plate temperature controling switch of sealing.

The utility model temperature detect switch (TDS) is realized by following technical proposals, this temperature detect switch (TDS), by cavity body (1), bimetal leaf element (2), moving contact (3), fixed contact (4), adjustment screw (5), electrode (6) and electrode (7) constitute, it is characterized in that, cavity body (1) has the cavity of a sealing, two gold plaque elements (2), moving contact (3), fixed contact (4) is installed in this cavity: an end of bimetal leaf element (2) is a stiff end, fix and connect with of cavity body (1) with electrode (6), the other end is a free end, moving contact (3) is installed, the inwall of this free end and cavity body (1) is gapped, can free movement; Relevant position on the direction of motion of moving contact (3) temperature distortion is equipped with fixed contact (4); The mutual alignment of fixed contact (4) and moving contact (3) is fixing and insulation by cavity body (1); The operating temperature value of crack that is temperature detect switch (TDS) between moving contact (3) and the fixed contact (4) is tightly to revolve the adjustment screw (5) that cooperates by one with cavity body (1) to regulate; Fixed contact (4) connects with electrode (7).The deformation direction that is heated in conjunction with bimetal leaf according to technique scheme, can make the temperature detect switch (TDS) of contact open in usual or normally closed type contact, when promptly arriving predetermined temperature, normally open contact closure or normally closed interlock disconnect, temperature raise contact closure or disconnection when reaching predetermined temperature both can have been made, also can make temperature and reduce contact closure or disconnection when reaching a certain predetermined temperature, just can make the temperature detect switch (TDS) of the different operating temperature values of several series.Above-mentioned bimetal leaf element (2) can be made sheet and also can make U type or a plurality of U-shaped sheet and connect from beginning to end in the opposite mode of adjacent U-shaped opening direction and form (see figure 5), and U-shaped sheet and combination thereof are convenient to realize the axial adjustment structure and are improved heat sensitivity.Above-mentioned dynamic and static contact material is silver preferably.If make the elongated tubular temperature detect switch (TDS), bimetal leaf element (2) is preferably formed by two sections different materials connections, and wherein a bit of is bimetal leaf, and a long section is a sheet metal, and in this case, the bimetal leaf end is a stiff end, and the sheet metal end is a free end.Above-mentioned fixed contact (4) also can directly be filled the post of by adjustment screw (5), and at this moment, screw (5) material is a copper, and spiral shell tail end iron chains connect silver contact (4), and this screw (5) is made conductive attachment with electrode (7) by metal nuts.

The utility model temperature detect switch (TDS) advantage is, bimetal leaf element and dynamic and static contact all are installed among the enclosed cavity of a tiny thin-walled, isolated with external environment and tested temperature control medium, be provided with the accurately mechanism of by-pass cock operating temperature, be convenient to make the serial temperature detect switch (TDS) of various fixedly operating temperatures.Simple in structure, the material saving, volume is tiny, and thermal inertia is little, and the variations in temperature response is rapid, reliable operation.The utility model temperature detect switch (TDS) can directly be combined into temperature alarm with power supply, electronics news Chinese percussion instrument, or forms overtemperature alarm and protective circuit with relay circuit, and motor, the various faults of electrical equipment were carried out the temperature rise protection.In like manner also can realize low-temperature warning or protection.

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

Fig. 1 is a structural representation of the present utility model, is preferred embodiment.Fig. 2, Fig. 3, Fig. 4 are respectively the structural representations of the utility model the 2nd, 3,4 embodiment.Fig. 5 is that bimetal leaf element (2) connects the schematic diagram that forms from beginning to end by a plurality of U-shaped sheets.

Fig. 1 cavity body (1) is made of copper pipe a and the combination of insulated tube b two parts, and it has a sealed at both ends cavity.The sealed end of copper pipe a is fixedly connected with the stiff end of two gold plaque elements (2), the free end of bimetal leaf (2) is equipped with silver moving contact (3) and stretches out the tube chamber that enters insulated tube from the openend transverse plane of copper pipe, and the free end of bimetal leaf (2) can be done the thermal deformation campaign in the clear in cavity (1); On the direction of motion of moving contact (3), the relevant position is equipped with the adjustment screw (5) of band fixed contact (4) on the insulation tube wall, and copper pipe connects with electrode (6) and electrode (7) respectively with the lead of drawing of fixed contact.Fig. 2 is second embodiment of technical solutions of the utility model, cavity body (1) is a tubular insulator, its material is a glass, pottery or heat resistant plastice, cavity body (1) two ends are installed with cap shape metal electrode (6), (7), bimetal leaf element (2) is made into U-shaped, one end of this U-shaped sheet is a stiff end, be fixedly connected with electrode (6), as welding, the other end of U-shaped sheet is a free end, silver moving contact (3) is equipped with in its outside, and there is screw in electrode (7) central authorities, and the adjustment screw (5) that the spiral shell tail end is equipped with fixed contact (4) is tightly revolved with this screw and cooperated.Fig. 3 is the 3rd an example structure schematic diagram of technical solutions of the utility model, cavity body (1) is a tubular insulator, as the thin-walled porcelain tube, cap shape metal electrode (6), (7) are packed in cavity body (1) two ends respectively, sheet bimetal leaf element (2) stiff end and electrode (6) are fixedly connected, reed shape fixed contact (4) connects with electrode (7), and is gapped between the dynamic and static contact, and adjustment screw (5) is installed on cavity body (1) sidewall.Fig. 4 is the 4th example structure schematic diagram of the utility model.Cavity body (1) is a glass tube, bimetal leaf element (2), moving contact (3), fixed contact (4) all is encapsulated among this glass tube cavity, its manufacturing process is identical with known dry reed switch, moving contact (3) fixed contact (4) is electrode (6), (7) from sealed at both ends the drawing of cavity, gapped between the dynamic and static contact, there is screw tightly to revolve on the cavity wall and cooperates with fixed contact adjustment screw (5).

Claims (1)

1, a kind of temperature detect switch (TDS), constitute by cavity body (1), bimetal leaf element (2), moving contact (3), fixed contact (4), adjustment screw (5), electrode (6) and electrode (7), it is characterized in that, cavity body (1) has the cavity of a sealing, bimetal leaf element (2), moving contact (3), fixed contact (4) are installed in this cavity: an end of bimetal leaf element (2) fixes with an end of cavity body and connects with electrode (6), the other end is a free end, moving contact (3) is installed, and free end is gapped to cavity inner wall; Relevant position on the moving contact direction of motion is equipped with fixed contact (4); Between fixed contact (4) and the moving contact (3) by cavity body (1) relative fixed and insulation; The crack is regulated by an adjustment screw (5) of making threaded engagement with cavity body (1) between moving contact (3) and the fixed contact (4); Fixed contact (4) connects with electrode (7).

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