CN2502394Y

CN2502394Y - External magnetic field change driving all enclosed on-off controller

Info

Publication number: CN2502394Y
Application number: CN 01230096
Authority: CN
Inventors: 陶敏光
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-08-25
Filing date: 2001-08-25
Publication date: 2002-07-24
Anticipated expiration: 2011-08-25

Abstract

An external magnetic field changing and driving omniseal make-and-break controller is provided, which is composed of an omniseal make-and-break system installed in a shell and an external magnetic field changing system at the outside. The omniseal make-and-break system is composed of an external magnetic field changing response component, a switch signal component and a fixed sealing component. The external magnetic field changing system is an implement component controlled by the command of the displacement, the temperature rising and the electromagnetic signal. The utility model is an electric make-and-break controller, comparing with prior art, which is characterized in that: a controlling and the an sending signal implement system are separated by an omniseal shell, which can prevent various interference besides the magnetic field, the signal is accurate; the utility model can have explosion prevention, waterproof, corrosion protection and anti-vibration functions, which can be suitable for various poor environments and can be applied in various controlling system.

Description

External magnetic field changes the hermetically sealed on-off controller of driving

Technical field

The on-off controller that the utility model relates to is a kind of electric on-off controller.Various adverse circumstances (having functions such as explosion-proof, waterproof, anticorrosion, anti-vibration) be can be applicable to, various main order controls, automatic control systems are widely used in.

Background technology

Existing on-off controller generally is difficult to accomplish hermetically sealed, so the switching action is in aerobic environment, because the effect of electric arc can not adapt to explosive environments, its electrical safety requires corresponding humidity, the scope of application is narrow, and is effect of arc when being fit to disjunction, and overall cost is higher.On the other hand, existing product still lacks the electric power on-off controller that possesses waterproof, anticorrosion and anti-vibration simultaneously.

Summary of the invention

The utility model provides a kind of external magnetic field to change and drives hermetic on-off controller in order to overcome the defective of prior art, replaces low-voltage electrical apparatuses such as some switch, master control electrical apparatus, circuit breaker, contactor.Described external magnetic field changes the technical scheme that drives hermetically sealed on-off controller: formed by being installed in the hermetically sealed break-make system in the housing and the external magnetic field change system of sealed external, its described hermetically sealed break-make system changes institutes such as responding part, switching signal part, fixing seals by external magnetic field and forms; Described external magnetic field change system is the performer that is controlled by displacement or temperature rise or electromagnetic signal.Changing the response part about external magnetic field can be permanent magnet or magnetic conductor or electromagnet, or these part or all assembly, also can be other device.Formed by movable contact spring and static contact about switching signal part in the hermetically sealed break-make system, perhaps adopted other signal spare.The material of fixing seals is plastics or glass or other in hermetically sealed break-make system.Contact protection also can be arranged or only have original air or contactless in hermetically sealed break-make system, described contact protection is to adopt to fill nitrogen deoxidation way or fill other inert gas, or the way of vacuum deoxidation, also available other way.About the external magnetic field change system can be the permanent magnetism varying type, perhaps electromagnetic change formula or permanent magnetism, electromagnetic combination varying type, perhaps other type.Various types of changes of magnetic field modes also are various, and for example permanent magnetism varying type variation pattern is the permanent magnet displacement, and perhaps the height of one one of permanent magnet or whole temperature is to the control of magnetic conduction, perhaps other pattern.And for example the electromagnetic change formula is that the sense of current changes, or the strong and weak variation of electric current, or the wave form varies of electricity, or the variation of pulse duty factor, or other.This external magnetic field changes the hermetically sealed on-off controller of driving and has following characteristics: one, control and execution two systems that post a letter are isolated with hermetically sealed housing, can avoid the various interference except that influence of magnetic field, and signal is accurate; Two, because galvanomagnetic effect, the switching signal sent still can feed back to control end by way of compensation, therefore singly be not used for open loop control, be used for closed-loop control yet; Three, because transmission system is hermetic, therefore can adopt the cheap contact pattern that has, in the closed chamber of anaerobic or few oxygen, there is not the hard arc influence during disjunction of contact, contact endurance is long.So no matter be that overall dimensions, manufacturing expense, suitable environment aspect all have clear superiority.

Description of drawings

Fig. 1 is that the utility model external magnetic field changes the external magnetic field change system employing pressing return type structure that drives hermetically sealed on-off controller, i.e. displacement instruction schematic diagram;

Fig. 2 is that external magnetic field change system of the present utility model adopts the temperature control structure, i.e. temperature rise instruction schematic diagram;

Fig. 3 is that external magnetic field change system of the present utility model adopts sense of current control, i.e. electromagnetic signal instruction schematic diagram;

Fig. 4 is that external magnetic field change system of the present utility model adopts strong and weak control, i.e. the electromagnetic signal instruction schematic diagram of changing of electric current.

Embodiment

The utility model relates to electric on-off controller; be that external magnetic field changes the hermetically sealed on-off controller of driving; formed by being installed in the hermetically sealed break-make system in the housing and the external magnetic field change system of sealed external; described hermetically sealed break-make system changes response part, switching signal part, fixing seals by external magnetic field, adds that perhaps contact protection etc. forms.Described external magnetic field change system is the performer that is controlled by the instruction of displacement or temperature rise or electromagnetic signal.It is permanent magnet or magnetic conductor or electromagnet that external magnetic field changes the response part, or these one one or whole sub-assemblies, and other part or the like.The switching signal part is that movable contact spring and static contact are formed, or other signal spare.The fixing seals material therefor is plastics or glass and other.Contact protection is adopted and is filled the nitrogen deoxidation or fill other inert gas, and perhaps perhaps only there are original air in vacuum deoxidation and other method or do not adopt contact (contactless).Described external magnetic field change system is permanent magnetism varying type or electromagnetic change formula or permanent magnetism, electromagnetic combination varying type.

Fig. 1 is an example of the external magnetic field change system performer that is controlled by displacement commands, hermetically sealed chamber 5 is arranged in the housing 4, commanding apparatus one depression bar 3 of external magnetic field change system is installed in the closed chamber outside of housing 4, press down-pressed pole 3 at external force F, it is moving to the BC displacement by the AB position that depression bar 3 drives permanent magnet 2, and depression bar has the returning spring 1 of cooperation, after external force F disappears, under returning spring 1 effect, make permanent magnet 2 be returned to the AB position, cause that like this external magnetic field changes.Movable contact spring and static contact are installed in the hermetically sealed chamber, movable contact spring connects permanent magnet 9, head has moving contact 7, the static contact head has fixed

contact

6,8, each contact has exit 10,11,12, and when permanent magnet 2 during in the AB position, the N utmost point of permanent magnets 9 attracts mutually with the S utmost point of permanent magnet 2 in the hermetically sealed chamber 5, moving contact 7 moves and

contacts

11,12 conductings of contact exit to fixed contact 8.And when permanent magnet 2 during in the BC position, the N utmost point of permanent magnet 9 repels mutually with the N utmost point of permanent magnet 2, and both S utmost points also repel mutually, and moving contact 7 leaves fixed contact 8 to fixed contact 6 motions and contact, 10,11 conductings of contact exit, and exit 11,12 disconnects.

Fig. 2 is the performer that the external magnetic field change system is controlled by the temperature rise instruction, is one group of temperature detect switch (TDS).Hermetically sealed chamber 28 is arranged in the housing 23, and permanent magnet 22 is equipped with in the closed chamber of housing 23 outside, and what closely link to each other with permanent magnet is heat transfer sheet 21.Movable contact spring and static contact are installed in hermetically sealed chamber 28, armature 27 is arranged in the movable contact spring, head has moving contact 25, and moving contact matches with the fixed contact 24,26 of static contact, and each contact has exit 29,30,31.Shown position represents that permanent magnet 22 attracts magnetic response device one armature 27 in the hermetically sealed chamber 28, and this moment, moving contact 25 contacted contact exit 30 and 31 conductings with fixed contact 24.When temperature rising permanent magnet internal energy of molecular increases, after both surpassing fixed temperature, the motion of molecule has destroyed the orderly arrangement of magnetism molecule and loss of excitation, permanent magnet 22 losss of excitation to the attraction of armature 27 less than the elastic force that must overcome after, moving contact 25 leaves fixed contact 24, arrive at last with fixed contact 26 and contact, switch transition has been finished in contact exit 29 and 30 conductings one time.After heat transfer sheet 21 temperature reduced, permanent magnet 22 attracted armature 27 again, causes the situation as figure.But can be in actual product without the version of heat transfer sheet, but permanent magnet is made upper and lower two, temperature sense part is set between two permanent magnets, vary with temperature, change magnetic property, implement the external magnetic field temperature control.

Fig. 3 is sense of current control, and promptly the external magnetic field change system is the performer that is controlled by the instruction of electromagnetic signal.Closed chamber 51 is arranged in the housing 47, movable contact spring and static contact are installed in the closed chamber, movable contact spring has permanent magnet 52, head has moving contact 49, moving contact matches with

fixed contact

48,50 on the static contact, each contact has exit 41,42,43, and electromagnet 46, the

leaded termination

44,45 of electromagnet are installed in the outside of housing seal chamber.When the termination 44 of electric current from coil flows into, when flow out termination 45, press the right-handed helix rule electromagnet 46 upper end N utmost points, the lower end S utmost point, device permanent magnet 52 is attracted in response, and moving contact 49

contacts

42,43 conductings of contact exit to fixed contact 48 motions; When the termination 45 of electric current from coil flows into, when flow out termination 44, the electromagnet 46 upper end S utmost points and the lower end N utmost point, permanent magnet 52 is ostracised, and moving contact 49 is to fixed contact 50 motions and contact, 41,42 conductings of contact exit and 42,43 disjunctions; When electric current is zero,

exit

41,42,43 equal disjunctions.

Fig. 4 is that strong and weak variation of electric current controlled, and promptly the external magnetic field change system is the performer that is controlled by the instruction of electromagnetic signal.Hermetically sealed chamber 71 is arranged in the housing 67, movable contact spring and static contact are arranged in the closed chamber, armature 72 is arranged in the movable contact spring, head has moving contact 69, moving contact 69 matches with the

fixed contact

68,70 of static contact, each contact has exit 61,62,63, electromagnet 66 is installed, the

leaded end

64,65 of electromagnet in the closed chamber outside of housing.

Coil lead end

64,65 at electromagnet 66 connects, when potential difference behind certain value, behind the elastic force of the attraction of 66 pairs of armature 72 of electromagnet during greater than the moving contact 69 pressing fixed contacts 70 of the movable contact spring that has been provided with, moving contact 69 leaves fixed contact 70 and moves to fixed contact 68, as long as current's intensity is enough big in the electromagnet 66, moving contact 69 is the reliable pressing fixed contact 68 of energy just,

contact exit

62,63 conductings like this, and 61,62 disjunctions.If current's intensity is big inadequately, 70 two just not disjunctions of moving contact 69 and fixed contact, perhaps moving contact 69 is positioned at two fixed contacts, 68,70 centre positions.

Among Fig. 1, Fig. 3 in the hermetically sealed chamber magnetic response part be permanent-magnet pieces, its movable contact spring is located at the centre position, in actual product, the position of connecting with static contact can be set also.

The external magnetic field change system adopts other situation of electromagnetic change formula, can reduce the variation of the sense of current by conversion, the perhaps variation of electric current power, perhaps both combinations.

Claims

1, external magnetic field changes the hermetically sealed on-off controller of driving, formed by being installed in the hermetically sealed break-make system in the housing and the external magnetic field change system of sealed external, it is characterized in that described hermetically sealed break-make system changes response part, switching signal part, fixing seals by external magnetic field and formed, described external magnetic field change system is the performer that is controlled by the instruction of displacement or temperature rise or electromagnetic signal.

2, external magnetic field as claimed in claim 1 changes the hermetically sealed on-off controller of driving, it is characterized in that it is permanent magnet or magnetic conductor or electromagnet that described external magnetic field changes the response part.

3, external magnetic field as claimed in claim 1 changes the hermetically sealed on-off controller of driving, it is characterized in that described switching signal part is that movable contact spring and static contact are formed.

4, external magnetic field as claimed in claim 1 changes the hermetically sealed on-off controller of driving, and the material that it is characterized in that fixing seals is plastics or glass.

5, external magnetic field as claimed in claim 1 changes and drives hermetically sealed on-off controller, and it is characterized in that has contact protection or only have original air or contactless in the hermetically sealed break-make system, and described contact protection is to adopt to fill nitrogen deoxidation or vacuum deoxidation.

6, external magnetic field as claimed in claim 1 changes and drives hermetically sealed on-off controller, it is characterized in that described external magnetic field change system is permanent magnetism varying type or electromagnetic change formula or permanent magnetism, electromagnetic combination varying type.

7, external magnetic field as claimed in claim 1 changes the hermetically sealed on-off controller of driving, it is characterized in that hermetically sealed chamber (5) is arranged in the housing (4), movable contact spring and static contact are installed in the hermetically sealed chamber, movable contact spring connects permanent magnet (9), and head has moving contact (7), and the static contact head has fixed contact (6,8), each contact has exit (10,11,12), depression bar (3) is installed in the closed chamber outside of housing, and depression bar drives permanent magnet (2), and depression bar has the returning spring (1) of cooperation.

8, external magnetic field as claimed in claim 1 changes the hermetically sealed on-off controller of driving, it is characterized in that hermetically sealed chamber (28) is arranged in the housing (23), permanent magnet (22) is installed in the closed chamber outside of housing, on heat transfer sheet (21) that closely links to each other with permanent magnet or permanent magnet be, following two, temperature sense part is set between two permanent magnets, movable contact spring and static contact are installed in hermetically sealed chamber (28), armature (27) is arranged in the movable contact spring, head has moving contact (25), the fixed contact (24 of moving contact (25) and static contact, 26) match, each contact has exit (29,30,31).

9, external magnetic field as claimed in claim 1 changes the hermetically sealed on-off controller of driving, it is characterized in that hermetically sealed chamber (51) is arranged in the housing (47), movable contact spring and static contact are installed in the closed chamber, permanent magnet (52) is arranged in the movable contact spring, head has moving contact (49), and moving contact (49) matches with fixed contact (48,50) on the static contact, and each contact has exit (41,42,43), electromagnet (46), electromagnet lead ends (44,45) are installed in the outside of housing seal chamber.

10, external magnetic field as claimed in claim 1 changes the hermetically sealed on-off controller of driving, it is characterized in that hermetically sealed chamber (71) is arranged in the housing (67), movable contact spring and static contact are arranged in the closed chamber, armature (72) is arranged in the movable contact spring, head has moving contact (69), and moving contact (69) matches with the fixed contact (68,70) of static contact, and each contact has exit (61,62,63), electromagnet (66) is installed, electromagnet lead end (64,65) in the closed chamber outside of housing.