CN201966132U

CN201966132U - Isolating explosion-proof switch

Info

Publication number: CN201966132U
Application number: CN201020670811XU
Authority: CN
Inventors: 孙力; 张策
Original assignee: XI'AN TONGDE ELECTRONIC TECHNOLOGY Co Ltd
Current assignee: XI'AN TONGDE ELECTRONIC TECHNOLOGY Co Ltd
Priority date: 2010-12-20
Filing date: 2010-12-20
Publication date: 2011-09-07
Anticipated expiration: 2020-12-20

Abstract

An isolating explosion-proof switch comprises a switch box arranged on the outer side surface of a seal explosion-proof plate, a panel on the upper bottom surface of the switch box, a key arranged in the switch box, extending out of the panel and capable of moving in the direction perpendicular to the panel, a slide block in the switch box, and at least one tongue tube on the inner side surface of the seal explosion-proof plate, wherein two ends of the tongue tube are respectively connected with connecting leads; a key inclined pressing surface is formed on the bottom surface of a key pressure head at the lower end of the key; the slide block comprises a spring seat capable of sliding in the direction perpendicular to the moving direction of the key, a spring embedded into one side in the spring seat and used for returning the slide block and a magnet on the other side in the spring seat; two ends of the spring are limited by the spring seat and the switch box respectively; a slide block inclined pressing surface matched with the key inclined pressing surface is formed at the end of the spring seat with the magnet; and the magnet corresponds to the tongue tube in position. The utility model solves the technical problems that the performance of a conventional isolating explosion-proof switch is in close relationship with the sealing condition of the switch, the performance of the switch is poor, the service life is short, and the installation and debugging are inconvenient.

Description

A kind of isolation flame-proof switch

Technical field

The utility model relates to a kind of isolation flame-proof switch.

Background technology

At present common isolation flame-proof switch to be adopted under the condition of sealing relatively, with contact when being subjected to external force, two corresponding contacts the fast offset and the corresponding closing of contact takes place, and reaches switching purposes.Button needs directly to contact with current collector, and the contact needs install in the same space with manual button.

The shortcoming of the isolation flame-proof switch of this structure is:

1, owing to contact and manual button need install in the same space, so the isolation explosion-proof performance of switch and the air-proof condition of switch have confidential relation.

2, because the contact of adopting exposes in air, switch performances and life-span are a greater impact.

3, because switch is worked under the condition of sealing relatively, make troubles for the Installation and Debugging of switch.

The utility model content

The utility model purpose provides a kind of isolation flame-proof switch, and its condition that has solved the sealing of the performance of existing isolation flame-proof switch and switch has confidential relation, switch performance is poor, the life-span is low, Installation and Debugging are inconvenient technical problem.

Technical solution of the present utility model is: a kind of isolation flame-proof switch, comprise the switch enclosure that is arranged on sealing bursting diaphragm lateral surface, the panel that is arranged on the switch enclosure upper bottom surface, be arranged in the switch enclosure and the extending panel and the button that can move along the vertical panel direction, it is characterized in that: also comprise the slide block that is arranged in the switch enclosure, at least one tongue tube that is arranged on sealing bursting diaphragm medial surface, the two ends of described tongue tube are respectively with to be connected lead continuous; The bottom surface of the lower end button pressure head of described button is provided with the button face that baroclines, described slide block comprises and can be used for the spring of slide block return and the magnet of opposite side along the spring base that slides perpendicular to the button direction of motion, the inner side of embedding spring base, the two ends of described spring are spacing by spring base and switch enclosure institute respectively, the end that described spring base is provided with magnet is provided with the slide block that matches with the button face of the baroclining face that baroclines, and the position of described magnet is corresponding with the position of tongue tube.

Above-mentioned tongue tube is contact tongue tube open in usual not, and the pole center line of described magnet overlaps with the contact line of tongue tube when button is upspring.

Above-mentioned tongue tube is contact normally closed type tongue tube not, and the pole center line of described magnet is depressed with the contact line of tongue tube at button and overlapped.

The utility model has the advantages that:

1, the utility model fully is isolated into two relative sealed space with switch with non-magnetic corrosion resistant plate with artificial button, realizes isolating reliably explosion-proof.

2, the utility model adopts pure mechanical structure, and the reliability height reaches 100,000,000 useful life, and closed the action with disconnection only needs several milliseconds, need not outer power supply source.

3, the utility model is isolated because of tongue tube contact and external environment condition, so switch can use in adverse circumstances such as high humidity, conduction dust and conducting solution.

4, the utility model is simple in structure, cost of manufacture is low.

5, the utility model can depress when one-touch is controlled a plurality of circuit open, close simultaneously, portion separately part close.

Description of drawings

Fig. 1 is a structural representation of the present utility model; Be the position view of switch key when the pole center line overlaps with the reed switch contact line when not pressing shown in the figure; Two of tongue tube not adhesives of reed among Fig. 1;

Fig. 2 is the structural representation of button;

Fig. 3 is the structural representation of slide block;

Fig. 4 presses the position view that makes behind the switch key when pole center line does not overlap with the reed switch contact line; Two of tongue tube reed adhesives under the action of a magnetic field among Fig. 4;

Fig. 5 is the position view of the pole center line of magnet of the present utility model when overlapping with the reed switch contact line;

Fig. 6 is the first kind position view of the pole center line of magnet of the present utility model when not overlapping with the reed switch contact line;

Fig. 7 is the second kind magnetic field schematic diagram of the pole center line of magnet of the present utility model when not overlapping with the reed switch contact line;

Wherein: 1-panel, 2-switch enclosure, 3-pole center line, 4-button, 41-button pressure head, the 42-button face that baroclines, the 43-keying body, 5-isolating seal plate, 61-connects lead, 62-connects lead, 7-reed switch contact line, 8-tongue tube, the 9-slide block, 91-spring, 92-magnet, 93-spring base, the 94-slide block face that baroclines, the 95-magnetic line of force.

Embodiment

The utility model principle: explosion-proof division board adopts non-magnetic corrosion resistant plate, the S utmost point of magnet and the N utmost point two pole center lines (being the pole center line) and reed switch contact line (being the line of two contacts in the tongue tube) are when overlapping, contact not adhesive of tongue tube open in usual is when magnet tongue tube adhesive during perpendicular to contact line move left and right.Above phenomenon is not rotated by tongue tube vertically, moves radially the influence of (in the adhesive claimed range that the magnetic field intensity of permanent magnetic iron meets).The distance dependent of the distance of the axial move left and right during the tongue tube adhesive and the magnetic field intensity of permanent magnetic iron and permanent magnetic iron and tongue tube (can between 0.5mm～10mm).To be subjected to variations in temperature and other reasons to cause that magnetic field changes among a small circle to the performance impact of switch very little with permanent magnetic iron magnetic field.

Claims

1. isolate flame-proof switch for one kind, comprise the switch enclosure that is arranged on sealing bursting diaphragm lateral surface, the panel that is arranged on the switch enclosure upper bottom surface, be arranged in the switch enclosure and the extending panel and the button that can move along the vertical panel direction, it is characterized in that: also comprise the slide block that is arranged in the switch enclosure, at least one tongue tube that is arranged on sealing bursting diaphragm medial surface, the two ends of described tongue tube are respectively with to be connected lead continuous; The bottom surface of the lower end button pressure head of described button is provided with the button face that baroclines, described slide block comprises and can be used for the spring of slide block return and the magnet of opposite side along the spring base that slides perpendicular to the button direction of motion, the inner side of embedding spring base, the two ends of described spring are spacing by spring base and switch enclosure institute respectively, the end that described spring base is provided with magnet is provided with the slide block that matches with the button face of the baroclining face that baroclines, and the position of described magnet is corresponding with the position of tongue tube.

2. isolation flame-proof switch according to claim 1 is characterized in that: described tongue tube is contact tongue tube open in usual not, and the pole center line of described magnet overlaps with the contact line of tongue tube when button is upspring.

3. isolation flame-proof switch according to claim 1 is characterized in that: described tongue tube is contact normally closed type tongue tube not, and the pole center line of described magnet is depressed with the contact line of tongue tube at button and overlapped.