CN2158106Y

CN2158106Y - Adjustable temperature controller for spiral power spring

Info

Publication number: CN2158106Y
Application number: CN 93228233
Authority: CN
Inventors: 戴庆凯
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-05-18
Filing date: 1993-05-18
Publication date: 1994-03-02
Anticipated expiration: 2003-05-18

Abstract

The utility model discloses an adjustable temperature controller for spiral power spring, which is composed of a pull button, a pull lever, a scale disk, spiral power springs, two contact heads, conducting wires and an insulating outer shell; an adjusting device comprises the pull button, the pull lever and the scale disk; the spiral power springs are coiled by sheet-shaped steel bars; the two contact heads are arranged on the outer end point of the spiral power spring and the end part of the pull lever; the conducting wires are connected with the contact heads and a binding post. The utility model has the advantages of simple structure, sensitivity, accuracy, low cost, long service life, etc., which is suitable for the temperature control of the household appliances, particularly the electrically heated blanket.

Description

Adjustable temperature controller for spiral power spring

The utility model belongs to a kind of temperature controller, particularly the adjustable type temperature controller.

At present, temperature controller mainly contains temperature controllers such as heater element temperature adjustment, capacitance decompression temperature adjustment, the temperature adjustment of diode half-wave rectification, bidirectional triode thyristor temperature adjustment, because complex structure or volume are big or price height or the narrow a lot of occasions of range of adjustment are just inapplicable.That bimetal controller has is simple in structure, reliable, long service life and the low advantage of cost, widespread use.This class temperature controller temperature control scope is definite after product approval, and the user can't adjust the temperature control point as required voluntarily, brings limitation to use undoubtedly.So sensitive, reliable, simple, long-life and the temperature controller of arbitrarily adjusting are still people problem to be solved.

The utility model principle is to adopt clockwork spring, clockwork spring is that the steel bar with sheet is rolled into, the outer end points of clockwork spring has a contact, insulate between contact and the clockwork spring, the contact relative with the clockwork spring contact is positioned on the tommy bar end of regulating device by insulator, draw lead from contact and be connected with binding post, clockwork spring, contact, lead and governor motion all place insulation crust, and end points and shell connecting place are the temperature-sensitive sensitizing ranges in the clockwork spring.When temperature controller is heated, make clockwork spring produce tension force, reach design temperature, clockwork spring expands outwardly; Tension force is enough to make the contact of clockwork spring outer end to move by cycloidal path, separates with the tommy bar contact, makes down circuitry; Reduce to temperature control point when following when temperature, clockwork spring shrinks because of cold, restores to the original state, and the closed again energising of contact realizes so repeatedly from temperature control.By the position of regulating device adjustment tommy bar contact, in certain temperature range, regulate the temperature control purpose arbitrarily to reach.

Adjustable type clockwork spring temperature controller of the present utility model respectively has a contact by outer end points of clockwork spring, the switch knob of forming regulating device, tommy bar, index dial, clockwork spring and tommy bar end, forms with lead and insulation crust that contact is connected with binding post on the shell respectively for two.

Contact in the adjustable type clockwork spring temperature controller of the present utility model preferably adopts silver or silver-plated.Contact is fixed on outer end points of clockwork spring and the tommy bar distal point by insulator.The lead of drawing from contact links to each other with the binding post on being fixed on shell.During temperature control, no current is by clockwork spring and tommy bar all the time.

Can be connected by support between the contact of the outer end points of clockwork spring and the lead in the adjustable type temperature controller of the present utility model, contact and the sliding contact of support top metal piece, support is fixed on the shell, insulate between support and the shell, and lead is welded on the support top metal piece.Because of contact is not to be connected with lead, contact position can change arbitrarily when clockwork spring is out of shape, and is not subjected to the restriction of lead.

Governor motion of the present utility model is made up of the tommy bar that contact is housed, switch knob and index dial.Tommy bar passes the shell guide groove and is connected with switch knob, and switch knob can drive tommy bar and slide in guide groove, regulates the tommy bar contact position, thereby reaches the purpose of temperature control.Range of adjustment can directly show from the shell index dial.

Tommy bar can pass through shell wainscot relative fixed, but can free slide along guide groove.

Clockwork spring described in the utility model can be that the steel sheet bar rolls and forms, and also can be to make with resilient temperature sensing metal, in the clockwork spring end points can be by riveted, be welded on the outer casing bottom, the riveted place is the temperature-sensitive sensitizing range.

Shell of the present utility model mainly is that the mountain insulating material is made.The shell of end points should be a metal in fixing clockwork spring, preferably adopts copper or stainless steel material.For the ease of installing and maintenance, shell can be made capable of opening and closing shell.Perhaps shell is divided into two parts: keep clockwork spring and contact in the part, make metal shell, the outside of metal shell can be cylindrical, and spiral tooth socket is arranged, and temperature controller can be fixed in the equipment or object that needs temperature control; Another part is the shell that guide groove, binding post are arranged, and adopts insulating material.

Adjustable type clockwork spring temperature controller of the present utility model, simple in structure, cost is low, and is highly sensitive, accurately, long service life.Be applicable to household electrical appliance, the especially temperature of electric blanket control.

The utility model can further be understood by following drawings and Examples.

Fig. 1 is a kind of adjustable type clockwork spring temperature controller structural representation.

Fig. 2 is an adjustable type clockwork spring temperature controller front view.

Fig. 3 is an adjustable type clockwork spring temperature controller left view.

Fig. 4 is another kind of adjustable type clockwork spring temperature controller structural representation.

1 is outer casing base among the figure, the 2nd, and closure head, the 3rd, hinge, the 4th, guide groove, the 5th, clockwork spring, the 6th, end points in the clockwork spring, the 7th, the outer end points of clockwork spring, the 8th, sheet metal, the 9th, contact, the 10th, support, the 11st, switch knob, the 1st, tommy bar, the 13rd, tommy bar contact, the 14th, power lead, the 15th, shell binding post, 16, the 17th, insulator, the 18th, shell wainscot.

See accompanying drawing 1-3: adjustable type clockwork spring temperature controller, the base 1 of its shell is connected by hinge 3 with top cover 2, can freely uncap, a guide groove 4 is left in lid 2 edges, guide groove 4 side casings mark has the index dial of temperature indicating value, the interior end points 6 of clockwork spring 5 is fixed on the outer casing base 1 by riveting method, clockwork spring 5 outer end points 7 are connected by insulator 16 with sheet metal 8 middle parts, sheet metal 8 one ends are contact 9, one support 10 that is welded on the outer casing base 1 is arranged above the sheet metal 8, support 10 tops are sheet metals, the sheet metal sliding contact on sheet metal 8 and the support (10).There is switch knob 11 at guide groove 4 places, switch knob 11 passes guide groove 4 wainscots 18 with tommy bar 12 and links to each other, tommy bar 12 ends are equipped with contact 13 by insulator 17, contact 13 is relative with contact 9, tommy bar 12 is by wainscot 18 relative fixed of outer casing base 1, but can freely slide, make to reach the position of regulating contact 13, the purpose of regulating temperature control along guide groove 4.Power lead 14 is drawn from support 10 top metal piece and contact 13 respectively, and links to each other with binding post 15 on the outer casing base 1.

See accompanying drawing 4, the structural representation of another embodiment of the present utility model.Wherein the outer end points 7 of clockwork spring 5 is connected with contact 9 by insulator 16, and power lead 14 is drawn with binding post 15 on the outer casing base 1 from contact 9 and linked to each other, and the remainder structure illustrates described identical with accompanying drawing 1-3 Chinese words.

Claims

1, a kind of adjustable type clockwork spring temperature controller, it is characterized in that it is made up of clockwork spring, regulating device, binding post, contact, lead and shell, clockwork spring is that the steel bar with sheet is rolled into, governor motion is made up of switch knob, tommy bar and index dial, fixedly the housing parts of end points is a metal material in the clockwork spring, the remainder shell is an insulating material, and two contacts are loaded on outer end points of clockwork spring and tommy bar end respectively, also have two leads to connect contact and two binding posts respectively.

2, a kind of adjustable type clockwork spring temperature controller as claimed in claim 1, the contact that it is characterized in that the outer end points of clockwork spring is connected by support with lead, support is fixed on the shell, propping up top of the trellis is sheet metal, contact and sheet metal sliding contact are drawn lead from the support top metal piece and are linked to each other with binding post.