CN2082454U

CN2082454U - Bimetallic delay switch

Info

Publication number: CN2082454U
Application number: CN 90204575
Authority: CN
Inventors: 余大彬; 黄世海
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-04-12
Filing date: 1990-04-12
Publication date: 1991-08-07

Abstract

The utility model relates to a thermal delayed automatic switch. The thermal delayed automatic switch adopts a structural mode to complete the function of delayed switching, wherein, the structural mode is that bimetallic strips (2) lock breaker contacts (5) in a cold state and release the breaker contacts (5) after heated and deformed, and simultaneously the reversion of the bimetallic strips (2) is baffled by the released contact heads (5). The bimetallic strips, the contacts, a heater and an operating lever are arranged on a base (1). The utility model overcomes the defect that the delay switch of a jump mechanism, which is directly driven by the deformation force of the heated bimetallic strips, has complicated structure, and has the advantages of simple structure and convenient operation.

Description

Bimetallic delay switch

The bimetallic delay switch that the utility model relates to is a kind of switch that utilizes heat time-delay control apparatus break-make of electrical equipment control aspect.Can be used as daily electrical equipment control and need among the appliance circuit of delay switch to be used to.

Existing thermal time delay switch has directly connects (or disconnection) circuit (seeing patent announcement CN2032360U) after utilizing the bimetal leaf temperature distortion, but reply bimetal leaf cooling back self, can not keep hot opening (or closing) state, therefore can not independently use as delay switch; The deformation force that utilizes bimetal leaf to produce that has directly promotes saltus step mechanism time-delay open circuit (seeing patent announcement CN86 2 03641U), but complex structure, and use inconvenience.

Task of the present utility model is a kind of bimetallic delay switch simple in structure, easy to use, that also can independently use as delay switch of design.

Design of the present utility model is to adopt bimetal leaf (2) cold conditions with contact (5) locking, and restriction contact (5) moves (referring to Fig. 2) to the direction of arrow shown in Figure 2 under self elastic force effect.The time-delay process is that heater (3) is heated bimetal leaf (2) and is out of shape, thereby removes the process to the locking of contact (5), the delay time of the length determine switch of this process.After unlocking, contact (5) will move to direction shown in Fig. 2 arrow under the effect of self elastic force, leaves latched position (referring to Fig. 3).Do not have the effect of joystick (7), contact (5) will rest on the position after unlocking, and heater (3) also no longer heats bimetal leaf (2).As seen contact (5) bimetal leaf (2) be heated finish before with can rest on two different positions afterwards, like this, utilization is controlled by the change in location of the contact (5) of bimetal leaf (2), with cooperating of other contact, and the function of the break-make electrical equipment of can realizing delaying time.In general, bimetal leaf (2) the moving direction approximate vertical of the moving direction of back motion end points and the motion end points of back contact (5) that unlocked by it of being heated.

The utility model has overcome the deformation force promotion saltus step mechanism that utilizes bimetal leaf to produce in design and has finished the baroque shortcoming of switch motion, and the single operating bar is the open and close and the delay function of controllable switch, and it is extremely convenient to use.

The utility model also can be according to using needs manufacture that long-term closure function has both with the time-delay automatic circuit break function and the series of products of time-delay outage automatically (or connection) function only; Also can be according to using needs to install the delay time adjusting device additional and increasing temperature compensation function; Also can install and easy to operate needs manufacture exposed type, concealed, stay-supported, stir formula, soft-touch type, button, knob type etc. simultaneously according to the field of employment.Its base (1) can with the panel and the base of panel (8) almost parallel or vertical and with matching suitable shape (as garden shape, square, rectangle etc.).And the utility model can also increase under the condition of cost hardly, the switch of existing most of type is transformed into the switch of delay function.

Description of drawings

Accompanying drawing 1 has the bimetallic delay switch of long-term connection and time-delay automatic circuit break function

(1) base

(2) bimetal leaf

(3) heater

(4), (5), (6) contact

(7) joystick

(8) panel

Accompanying drawing 2 bimetallic delay switchs are in the schematic diagram of time-delay state

(2), (3), (4), (5), (6) label implication are with accompanying drawing 1

Accompanying drawing 3 bimetallic delay switchs are in the schematic diagram after the time-delay state termination

(2), (3), (4), (5), (6) label implication are with accompanying drawing 1

Accompanying drawing 4 only has the soft-touch type bimetallic delay switch schematic diagram of time-delay automatic circuit break function

(2), (3), (5), (7) label implication are with accompanying drawing 1

Accompanying drawing 5 heaters are parallel to the bimetallic delay switch schematic diagram in the circuit

(2), (3), (4), (5) label implication are with accompanying drawing 1

(10) binding post

Accompanying drawing 6 is added with the bimetallic delay switch schematic diagram of time adjustment device

(1), (2), (3), (5), (8) label implication are with accompanying drawing 1

(9) time adjusting rod

Accompanying drawing 7 can disconnect and the delay time bimetallic delay switch schematic diagram of the soft-touch type of connecting circuit.

(2)-(7) the label implication is with accompanying drawing 1

Embodiment 1:

As shown in Figure 1, be a kind of dial type bimetallic delay switch with long-term energising and time-delay automatic circuit break function.Switch is in long-term closure state, and contact (4,5,6) is in contact with one another under the pressure effect that joystick A is ordered, and makes electrical equipment long logical.Stir to direction shown in the arrow as joystick (7), the B point is turned to contact (6) contact,, make contact (6) break away from contact (5) because of the distance that the B point is ordered to C less than the A point to the distance of rotating shaft C point, thereby make heater (3) seal in circuit, heater begins bimetal leaf (2) is heated.At this moment, contact (5) still contacts with contact (4) because of being locked by bimetal leaf.Through one section time-delay, bimetal leaf (2) is under the effect of heater (3), and is crooked and lose locking to contact (5), and contact (5) leaves contact (4) because of self elastic force, and stops bimetal leaf (2) to be replied, thereby finishes the delay cut-off function.

Heater in this example (3) is loaded near the bimetal leaf, preferably be close on it, can be resistance or heating wire, 1/8W resistance preferably, resistance is embedded in the gluey insulating heat-conduction material (as silicone grease), in the time-delay process, electric heater (3) is gone up consumed power below 3W, preferably is set in 0.5W-1.5W.Can be after the setting by go up series connection (or in parallel) adjustable resistance at heater (3), change heater (3) and go up power consumption, regulate delay time, for easy to operate, the adjusting turn-knob can be set on panel, whole (or end) available bimetal leaf of contact (5) is made, like this can compensation medium the delay time error that causes of variations in temperature.And can omit contact (4), (6) as required.Embodiment 2:

As shown in Figure 4, behaviour is button from bar (7), forms button (or soft-touch type) the bimetallic delay switch that does not possess long-term closure function, and knob can be fixed on the contact (5).

Embodiment 3:

As shown in Figure 5, be on the basis of example 1 or 2, be added with binding post (10), heater (3) is with the parallel form place in circuit, and its advantage is that delay time is not subjected to the influence of Be Controlled load size.Can be applicable to the place higher relatively to the delay time requirement, and circuit and voltage transmission circuit Guaranteed of the power of Be Controlled electrical equipment below 10W own.

Embodiment 4:

As scheming shown in (6), being different from the above example be, add free adjusting screw(rod) (9),, change motion end points shift motion, reach the purpose that changes delay time by changing the relative position of bimetal leaf (2) and contact (5).This device also can be installed on the contact (5).

Embodiment 5:

As Fig. 7 is can disconnect and the soft-touch type bimetallic delay switch of timing closing circuit.Can be used among the circuit of various need delayed startups.Link as itself and mains switch, be used for the OCL circuit delay and connect loud speaker; Delayed startup high-tension circuit in CRT circuit; With make filament and start protective circuit; And incandescent lamp, the startup protective circuit of motor etc.

Claims

1, a kind of bimetallic delay switch, locking contact (5) when it is characterized in that bimetal leaf (2) cold conditions; Remove the locking to contact (5) after the temperature distortion, its structure is to be provided with following part on base (1):

Bimetal leaf (2), heater (3), contact (5), action bars (7).

2, switch as claimed in claim 1 is characterized in that be heated moving direction and the locked contact (5) of back motion end points of bimetal leaf (2) discharges the moving direction approximate vertical of back motion end points.

3, switch as claimed in claim 1 is characterized in that being added with delay time adjusting screw(rod) (9).

4, switch as claimed in claim 1 is characterized in that adding free adjusting resistance.

5, switch as claimed in claim 1 is characterized in that the material of contact (5) is a bimetal leaf.

6, switch as claimed in claim 1 is characterized in that heater (3) is parallel among the circuit.

7, switch as claimed in claim 1 is characterized in that heater (3) is a resistance.

8, switch as claimed in claim 1 is characterized in that heater (3) tightly invests bimetal leaf (2).

9, switch as claimed in claim 1 is characterized in that being filled with gluey insulating heat-conduction material between heater (3) and the bimetal leaf (2).