CN2618284Y

CN2618284Y - Temperature controller

Info

Publication number: CN2618284Y
Application number: CN 03221172
Authority: CN
Inventors: 顾锡明; 殷雪云
Original assignee: CHAOCHOU MINGJIA ELECTRONIC EQUIPMENT Co Ltd
Current assignee: CHAOCHOU MINGJIA ELECTRONIC EQUIPMENT Co Ltd
Priority date: 2003-04-11
Filing date: 2003-04-11
Publication date: 2004-05-26
Anticipated expiration: 2013-04-11

Abstract

The utility model relates to a temperature controller, which comprises a shell, a static contact, a dynamic contact, a terminal strip, a bimetal strip base, a bimetal strip, a push rod, and an alloy cap. The utility model is characterized in that the static contact is fixedly positioned on a static contact base. A dynamic contact hole is arranged on the static contact base. The static contact base is inserted into the static contact base groove of the shell and the low end is connected with the terminal strip. An end of the dynamic contact is in the hole of the dynamic contact, while the other end is arranged on the support port. The dynamic static contact is inserted into the dynamic contact groove of the shell and the lower end is connected with the terminal strip. A spring is added below the dynamic contact. An end of the spring is arranged in the spring seat chamber of the shell and the other end is collided with the dynamic contact. The utility model has the advantages of a large loading current, a small volume and being easy to install. The utility model can be applied in various high-power electric heaters.

Description

Temperature controller

Technical field

The utility model relates to the temperature controller in a kind of electric heater, on the power circuit especially for the electric heater that is serially connected in water heater, air-conditioning, insulating pot, electric coffee kettle, microwave oven, water dispenser and so on, plays temperature control and overtemperature protection.

Background technology

At present, generally be used for water heater, air-conditioning, insulating pot, electric coffee kettle, microwave oven, temperature controller structure on the electrical heated appliances such as water dispenser as shown in Figure 1, it comprises housing 11, drive the movable contact spring 5 of contact 10, the static contact 13 of band fixed contact 12, a pair of

lug plate

7,8, bimetallic bar 4, bimetal leaf 2, push rod 3, aluminium lid 1, described movable contact spring 5, static contact 13 is positioned at the die cavity of housing 11, and respectively by rivet 6,9 with a pair of

lug plate

7,8 realize being electrically connected, wherein movable contact spring 5 is an elastic spring, the moving contact 10 of this elastic spring one end under nature contacts with fixed contact 12 on the relative static contact 13, described bimetallic bar 4 is installed in the upper end of housing 11, be embedded with bimetal leaf 2 in it, described push rod 3 is installed in the centre bore of bimetallic bar 4, its upper end contacts with bimetal leaf 2, the lower end contacts with movable contact spring 5, and described aluminium lid 1 is located at the top of bimetal leaf 2 and bimetallic bar 4 is installed in the upper end of housing 11.When thermostat is installed, only needs a pair of lug plate on it 7,8 is serially connected on the power circuit of electric heater and get final product.When electric heater is worked; in case temperature is too high; exceeded predefined temperature; at this moment the bimetal leaf 2 of thermostat will be out of shape; promote push rod 3 and move down, movable contact spring 5 is backed down, moving contact 10 is separated with fixed contact 12; thereby power circuit is disconnected, thereby played the effect of temperature control and overtemperature protection.The thermostat of this structure, the defective of its existence is: owing to movable contact spring 5 is to lean on the elasticity bounce-back of reed self to reset, therefore to make elasticity of spring leaf good, must make the thin thickness of reed, sectional area is little, and the reed sectional area is added restraining factors such as being subjected to the bimetal leaf bearing capacity for a short time, makes the loaded current of circuit less, generally can only be below 10A.But the temperature controller that a lot of electric heaters are used requires the loaded current of circuit more than 10A, and said structure is if make the thermostat of loaded current greater than 10A, then must increase the volume of thermostat housing, but but volume increases the restriction that the back is subjected to installing space, thereby has increased the installation difficulty of thermostat greatly.

Summary of the invention

The purpose of this utility model be to provide a kind of rational in infrastructure, loaded current is big, volume is little, the temperature controller being convenient to install.

The purpose of this utility model reaches like this, a kind of temperature controller, it is by housing 15, the static contact 6 of band fixed contact 7, drive the movable contact spring 10 of contact 9, a pair of

lug plate

19,16, be installed in the bimetallic bar 4 of housing 15 upper ends, be embedded the bimetal leaf 2 in 4 chambeies of bimetallic bar, the push-rod hole 5 and the upper end that are positioned at bimetallic bar 4 contact with bimetal leaf 2, the push rod 3 that the lower end contacts with movable contact spring 10, and be positioned at bimetal leaf 2 tops and aluminum cap 1 that bimetallic bar 4 is installed on the housing 15 constitutes, be characterized in: described static contact 6 is fixedly arranged on the stationary contact bar 8, below static contact 6, be shaped on movable contact spring jack 23 on the stationary contact bar 8, stationary contact bar 8 is embedded in the stationary contact bar groove 20 of housing 15 and the lower end is connected with lug plate 19; The end that described movable contact spring 10 drives contacts 9 is positioned at movable contact spring jack 23 and contacts with the fixed contact 7 of relative static contact 6, the other end then is installed on the supporting mouth 12 of movable contact bar 13, and movable contact bar 13 is embedded in the movable contact bar groove 14 of housing 15 and the lower end is connected with lug plate 16; Side near movable contact bar 13 below described movable contact spring 10 has additional a spring 21, and an end of spring 21 is installed in the spring cavity 18 of housing 15, and the other end and movable contact spring 10 are inconsistent.

The utility model is owing to be designed to the moving seesaw-type disconnecting apparatus with movable contact spring 10, and the return of movable contact spring 10 is to rely on its beneath spring 21 to realize, so elasticity no requirement (NR) to movable contact spring 10, thereby can increase the sectional area of movable contact spring 10 by the thickness that increases movable contact spring 10, thereby under the situation of thermostat constancy of volume, the loaded current of circuit can be increased to more than the 10A, both go for having made things convenient for installation again on the various powerful electric heaters.

Accompanying drawing and drawing explanation

Figure 1 shows that the applicant lifts and the structure chart of prior art.

Fig. 2 is a perspective view of the present utility model.

Fig. 3 is a plane structure chart of the present utility model.

Embodiment

Housing 15 of the present utility model adopts plastic moulding to form, and is shaped on the stationary contact bar groove of planting for stationary contact bar 8 20, the movable contact bar groove 14 that supplies 13 plants of movable contact bar and the spring cavity 18 that is used to place spring 21 on it.

Static contact 6 of the present utility model, stationary contact bar 8 are the metallic conduction sheet, generally can select copper current-conducting piece for use.Offer a movable contact spring jack 23 for movable contact spring 10 plants in the centre of stationary contact bar 8, directly over the movable contact spring jack 23, be installed with static contact 6 on the stationary contact bar 8, it is the fixed contact 7 of material that the below point of static contact 6 welds with silver, is shaped in the lower end of stationary contact bar 8 to be used for the fixing feet 22 that is connected with lug plate 19.

Movable contact spring 10 of the present utility model, movable contact bar 13 are the metallic conduction sheet, generally can select copper current-conducting piece for use.To weld with silver be the moving contact 9 of material to point above an end of movable contact spring 10, is shaped on a cutter groove 11 on the other end of movable contact spring 10, realizes and being connected of movable contact bar 13 by the scarf of the supporting mouth 12 on cutter groove 11 and the movable contact bar 13.Also be shaped in the lower end of movable contact bar 13 and be used for the fixing feet 24 that is connected with lug plate 16.

Spring 21 of the present utility model is located in the below, spring cavity 18 of movable contact spring 10, and near a side of movable contact bar 13.

Temperature controller of the present utility model is assembled like this, at first will be inserted in the stationary contact bar groove 20 of housing 15 with the stationary contact bar 8 of static contact 6, and make the fixing feet hole of fixing feet 22 insertings on the lug plate 19 that is positioned at housing 15 bottoms of stationary contact bar 8 lower ends, with both rivet clasps, an end that again movable contact spring 10 is driven contacts 9 inserts in the movable contact spring jack 23 and contacts with fixed contact 7 on the static contact 6, and the other end is by supporting mouth 12 scarves of cutter groove 11 with movable contact bar 13, in spring cavity 18, place spring 21 then, again movable contact bar 13 is inserted in the movable contact bar groove 14 of housing 15, and make the fixing feet hole 17 of fixing feet 24 insertings on the lug plate 16 that is positioned at housing 15 bottoms of movable contact bar 13 lower ends, with both rivet clasps, then install bimetallic bar 4 in the upper end of housing 15, put into push rod 3 in the push-rod hole 5 of bimetallic bar 4, put into bimetal leaf 2 in the seat chamber of bimetallic bar 4, the upper end and the bimetal leaf 2 of push rod 3 are conflicted, lower end and movable contact spring 10 are inconsistent, by aluminum cap 1 bimetallic bar 4 are being locked on the housing 15 above the bimetal leaf 2 at last.

Temperature controller of the present utility model is serially connected on the power circuit of electric heater by a pair of lug plate 19,16.When heating-up temperature too high, when having exceeded predefined temperature, bimetal leaf 2 in the circuit on the thermostat will deform (promptly to lower recess), thereby promoting push rod 3 moves down, movable contact spring 10 is backed down, the moving contact 9 of movable contact spring 10 1 ends is separated with the fixed contact 7 of static contact 13, power circuit is disconnected.Otherwise, when the temperature in the heater is lower than predefined temperature, then the bimetal leaf on the thermostat 2 can upwards rebound again and resets in the circuit, at this moment movable contact spring 10 under the effect of spring 21 bounces to top offset, the moving contact 9 that makes movable contact spring 10 1 ends and the fixed contact 7 of static contact 13 center of gravity again fit together, thereby power circuit is connected.

Claims

1, a kind of temperature controller, it is by housing (15), the static contact (6) of band fixed contact (7), drive the movable contact spring (10) of contact (9), a pair of lug plate (19), (16), be installed in the bimetallic bar (4) of housing (15) upper end, be embedded the bimetal leaf (2) in bimetallic bar (4) seat chamber, the push-rod hole (5) and the upper end that are positioned at bimetallic bar (4) contact with bimetal leaf (2), the push rod (3) that the lower end contacts with movable contact spring (10), and be positioned at bimetal leaf (2) top and aluminum cap (1) that bimetallic bar (4) is installed on the housing (15) constitutes, it is characterized in that described static contact (6) is fixedly arranged on the stationary contact bar (8), below in static contact (6), be shaped on movable contact spring jack (23) on the stationary contact bar (8), stationary contact bar (8) is embedded in the stationary contact bar groove (20) of housing (15) and the lower end is connected with lug plate (19); The end that described movable contact spring (10) drives contact (9) is positioned at movable contact spring jack (23) and contacts with the fixed contact (7) of relative static contact (6), the other end then is installed on the supporting mouth (12) of movable contact bar (13), and movable contact bar (13) is embedded in the movable contact bar groove (14) of housing (15) and the lower end is connected with lug plate (16); Side at the close movable contact bar (13) in the below of described movable contact spring (10) has additional a spring (21), and an end of spring (21) is installed in the spring cavity (18) of housing (15), and the other end and movable contact spring (10) are inconsistent.