CN201465907U

CN201465907U - Magnetic control switch

Info

Publication number: CN201465907U
Application number: CN2009201250051U
Authority: CN
Inventors: 王海飞
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-07-17
Filing date: 2009-07-17
Publication date: 2010-05-12
Anticipated expiration: 2019-07-17

Abstract

The utility model provides a magnetic control switch. The switch comprises a sealed metal shell and a magnetic field source arranged in the shell, wherein the inside of the shell is provided with a static contact and movable contact which can contact with each other for electric conduction, the magnetic field source controls the static contact and movable contact to contact or separate, the static contact is fixed on the inner wall of the shell, one side of the movable contact is provided with a pressure spring used for leading the movable contact to be against the static contact, and the other end of the pressure spring contacts with the inner wall of the shell. The utility model adopts a completely sealed pressure spring, the internal working condition is separated with the outside, the electric spark and the like generated in the internal working can not affect the external environment, the external severe environment such as hydraulic pressure, air pressure, dust and methane gas can not affect the internal working and the on-off of the internal circuit can be controlled from the external magnetic field source, thus the utility model can be used for mining, diving and salvaging and used in other pelagic environment.

Description

A kind of magnetic switch

Technical field

The utility model relates to magnetic switch.

Background technology

Magnetic switch is used very extensive, and it is conducting and disconnection by the effect control circuit of outer magnetic force, reports to the police or other control commands thereby trigger.At present, magnetic switch commonly used is the tongue tube magnetic switch, tongue tube is formed with a pair of flexible tongue made from magnetic material, makes two tongue magnetization of tongue tube, the break-make that two tongues is contacted or separate control circuit by the magnetic field that permanent magnet or coil produced under attraction force acts.But it often also is restricted in the special occasions use except shortcomings such as water proofing property own is not strong.In the deep-sea, under powerful hydraulic pressure effect, common switching device is malfunctioning under powerful hydraulic pressure easily, and unsealed housing also is damaged easily; At inflammable and explosive environment, as the colliery of depths at the bottom of the ground etc., the electric spark that evokes at contacting or when disconnecting can set off an explosion, and has potential safety hazard.

Summary of the invention

The purpose of this utility model is to avoid weak point of the prior art and provides a kind of safe and convenient to use, can be at the deep-sea, under the mine, the magnetic switch that uses in the particular surroundings such as inflammable and explosive, for this reason, the utility model is by the following technical solutions: it comprises the closed metal housing, and place the outer magnetic field sources of housing, be provided with conductive fixed contact of contact and moving contact in the described housing, control that described fixed contact contacts with moving contact or separately by described magnetic field sources, described fixed contact and described inner walls relative fixed, described moving contact one side be provided with can with this moving contact top to the contacted compression spring of fixed contact, the other end of described compression spring reliably contacts with inner walls.

Further, described magnetic field sources is a permanent magnet.

Further, described moving contact is a permanent magnet, and this permanent magnet is opposite with permanent magnet polarity as magnetic field sources.

Preferably, described fixed contact is a conductive rivet, and described conductive rivet is located on the insulating trip, and described insulating trip top is provided with the conduction deformed spring, and the lower end of described conduction deformed spring reliably contacts with described conductive rivet.

The utility model compared with prior art has the following advantages: because the utility model has adopted the housing of a complete closed; with moving contact; internal conductive member such as fixed contact and compression spring all are positioned in the housing of this sealing; internal work state and external isolation; the electric spark that internal work produces etc. can not have influence on external environment condition; outside hydraulic pressure; air pressure; dust; the gas adverse circumstances can not have influence on inner work yet; can control the break-make of internal circuit from the external magnetic field source, so the utility model can be at mine; diving; use in salvaging or other abyssal environment.

Description of drawings

Fig. 1 is the three-dimensional explosive view of the utility model embodiment 1.

Fig. 2 is the housing cutaway view of Fig. 1.

Embodiment

With reference to accompanying drawing 1～2. the utility model comprises the metal shell 1 of sealing, be provided with conductive fixed contact 2 of contact and moving contact 3 in the metal shell 1, moving contact 3 tops are fixed contact 2, fixed contact 2 and shell 1 inwall upper end relative fixed. moving contact 3 belows are compression spring 4, the upper end of compression spring 4 can be with moving contact 3 jack-up, it is reliably contacted with fixed contact 2, the lower end of compression spring 4 reliably contacts with the metal shell inwall, and at outside wall surface 11 places that should compress the place of spring 4 contacts relatively, the housing 1 outer magnetic field sources 51 that is provided with, this magnetic field sources is the shape of switch joystick herein, its key element is a permanent magnet 5, and its polarity of the magnetic field and moving contact 3 be magnetic opposite (moving contact is permanent magnet in the present embodiment) just, the two is inhaled mutually, this magnetic field sources 51 by near with contact with moving contact away from housing 1 control fixed contact or separates, thereby the break-make of control magnetic switch. certainly, magnetic field sources 51 also can be the magnetic field that coil produces.

For easy to use, fixed contact 2 is a conductive rivet, is located on the insulating trip 21, insulating trip 21 tops are provided with conduction deformed spring 6, and this conduction deformed spring 6 is an intermediate expansion shape, and the lower end is short and tight, push down insulation board 21 and make its relative fixed, locating ring 7 and clamp ring 8 are passed in the upper end.Locating ring 7 is pushed down in this clamp ring 8, and the expansion arcs that this locating ring 7 will conduct electricity in the middle of the deformed spring 6 are pushed down, and make this conduction deformed spring 6 only expose epimere by the apertures of clamp ring 8 centres, and this metal latch collar 8 also screws with screw thread tabling on the inner walls.When using, insulating trip 21 matches with the inner walls shape, and relative fixed can double swerve in housing 1.

The matching used permanent magnet 5 in the utility model housing 1 bottom is located at the top of switch joystick 51.This permanent magnet 5 sees through housings close face 11 and produces strong suction each other with permanent magnet 3 (moving contact 3) at ordinary times, tightly inhale in the downside of housings close face 11, and permanent magnet 3 also be subjected to suction downwards the direction of permanent magnet 5 move, compression spring 4 is compressed, magnet 3 is that moving contact 3 separates with fixed contact 2, thereby the utility model is in closed condition.When the utility model is opened, the permanent magnet of inhaling in housing bottom 5 is unpluged, moving contact 3 loses external suction, be compressed spring 4 jack-up and touch mutually with fixed contact 2, thereby circuit is in conduction state, and switch is promptly opened.

In order to obtain reasonable result of use, housing of the present utility model is that metal-integral is made, and inner walls is installed for convenience and is provided with step 12.

When using, compression spring 4 is a power spring, and housing 1 is provided with the moving contact interface in the contact position with this conductive compression springs 4, and this moving contact interface is connected with conductive compression springs 4, and extends outside housing 1; Equally, housing 1 is provided with the fixed contact interface at conduction deformed spring 6 places, and this fixed contact interface is connected with conduction deformed spring 6, and extends outside housing 1, like this, moving contact interface of this magnetic switch and fixed contact interface can be connected in turn by conduction with external power supply, external connection electrical apparatus.Certainly, the utility model also can not established the moving contact interface, and replaces with the metal shell that self has conducting function.

Conductive compression springs 4, moving contact 3 are as the electric conductor in this magnetic switch, and its cross-sectional area is bigger than the cross-sectional area of the tongue of prior art, so the operating current that the utility model can pass through is big; And moving contact 3, fixed contact 2 and compression spring 4 place in the housing 1 of sealing, so the utlity model has the advantage durable, that reliability is high, be not vulnerable to the influence of ambient pressure and damage, can in adverse circumstances such as liquid and some are inflammable and explosive, use.

When permanent magnet 51 or conductive coil during away from housing 1 lower end, compression spring 4 is in free state, fixed contact 2 and moving contact 3 contact, be that fixed contact and moving contact, conductive compression springs 4, conduction deformed spring 6, moving contact interface, fixed contact interface and housing 1 external circuit form a conductive path, the magnetic switch closure, circuit turn-on; When permanent magnet 51 or conductive coil during near housing 1 lower end, because the polarity of two permanent magnets polarity of the magnetic field opposite or that conductive coil produces is opposite with moving contact 3 polarity, two permanent magnets attract each other or conductive coil produces magnetic field and moving contact 3 attracts each other, when magnetic attraction during greater than compression spring 4 elasticity of compression deformation power, be that permanent magnet 3 is to lower compression spring 4, make fixed contact 2 and moving contact 3 separately, promptly magnetic switch disconnects, and circuit disconnects; Thereby realized control to circuit turn-on and disconnection.

The utility model also can be by changing the service orientation of permanent magnet 51 to the adjustment of compression spring 4. and spring 4 is shorter when compressing, it attract need be stretched can the jack-up moving contact time, the position that permanent magnet 51 uses becomes housing 1 upper end. promptly when permanent magnet 51 or conductive coil during away from housing 1 upper end, compression spring 4 is in free state, fixed contact 2 and moving contact 3 are separately, magnetic switch disconnects, and circuit disconnects; When permanent magnet 51 or conductive coil during near housing 1 upper end, because the polarity of two permanent magnets polarity of the magnetic field opposite or that conductive coil produces is opposite with moving contact 3 polarity, both attract each other, when magnetic attraction during greater than compression spring 4 elastically-deformable resistances, spring 4 produces tensile elasticity deformation, fixed contact 2 and be in contact with one another by the moving contact 3 of jack-up, be that fixed contact 2 and moving contact 3, spring 4, fixed contact interface and moving contact interface and housing 1 external circuit form a conductive path, the magnetic switch closure, circuit turn-on.

In addition, fixed contact 2 also can be the conducting strip that is connected with the upper end of housing 1 inwall.

The utility model housing can adopt metal one-time moulding manufacturing, and is more firm.During use, inner isolated fully in the opening and closing process with outer wall, therefore can under multiple environment, use; such as abyssal environment or inflammable and explosive environment; do not hinder the sensitivity and the safety of switch, easy to use, and be not vulnerable to the influence of ambient pressure and damage.

Should be noted that at last; above embodiment is only in order to the explanation the technical solution of the utility model; but not to the restriction of the utility model protection range; although the utility model has been done to explain with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can make amendment or be equal to replacement the technical solution of the utility model, and not break away from the essence and the scope of technical solutions of the utility model.

Claims

1. magnetic switch, it is characterized in that it comprises the closed metal housing, and place the outer magnetic field sources of housing, be provided with conductive fixed contact of contact and moving contact in the described housing, control that described fixed contact contacts with moving contact or separately by described magnetic field sources, described fixed contact and described inner walls relative fixed, described moving contact one side be provided with can with this moving contact top to the contacted compression spring of fixed contact, the other end of described compression spring reliably contacts with inner walls.

2. a kind of magnetic switch as claimed in claim 1 is characterized in that described magnetic field sources is a permanent magnet.

3. a kind of magnetic switch as claimed in claim 2 is characterized in that described moving contact is a permanent magnet, and this permanent magnet is opposite with permanent magnet polarity as magnetic field sources.

4. a kind of magnetic switch as claimed in claim 1, it is characterized in that described fixed contact is a conductive rivet, described conductive rivet is located on the insulating trip, and described insulating trip top is provided with the conduction deformed spring, and the lower end of described conduction deformed spring reliably contacts with described conductive rivet.

5. a kind of magnetic switch as claimed in claim 1, it is characterized in that this conduction deformed spring is an intermediate expansion shape, middle porose locating ring and clamp ring are passed in the upper end, locating ring is pushed down in described clamp ring, described locating ring is pushed down the intermediate expansion section of conduction deformed spring, and described clamp ring is threaded with inner walls.