CN2666035Y

CN2666035Y - Pressing type contactless switch

Info

Publication number: CN2666035Y
Application number: CN 200320109426
Authority: CN
Inventors: 蔡秀珠
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-10-31
Filing date: 2003-10-31
Publication date: 2004-12-22
Anticipated expiration: 2013-10-31

Abstract

The utility model provides a pressing type contactless switch which, wherein, on the basis of preserving the ordinary pressing type switch mechanical structure, the utility model adopts a non-contact induction mode instead of traditional contact mode and connects a traveling induction block with the end of a button. And a receiving inductor, a wiring terminal and a circuit board are integrated and form a sealed electronic module. The traveling induction block can get close to the receiving inductor in the interior of the electronic module by pressing the button in order to lead the receiving inductor to sense the traveling induction block within effective induction distance to power on the control circuit on the circuit board, thereby controlling the open and close of the loop of the circuit. The instant stable voltage supply can be provided through the integration and assemble of the internal circuit board and the signal processing. A speed and sparkless working switch contact can also be provided due to the contactless crystal output.

Description

The push type contactless switch

Technical field

The present invention relates to a kind of switch, further, relate to a kind of push type contactless switch.

Background technology

General switch (SWITCH) is mainly used in the connecting and disconnecting of circuit, with the operation of control load with stop, see also shown in Figure 1, it is the voltage schematic diagram of perfect switch energized moment, when after time t4 energized, in the time interval of T, load has obtained moment and stable power by t4.Describe in another way, in the time interval of T, switch provides a stable gateway, and any signal of telecommunication can both stably be passed through at t4.

Yet above-mentioned indication is a perfect switch, the voltage time graph of a relation of general existing switch, see also shown in Figure 2, suppose that we are in the time t0 Push switch, through the mechanical part transmission, in time t4 contact and closing of circuit, contact with the moment of circuit loop owing to make and break contact this moment, can produce very big contact resistance, stop electric current to pass through, and can produce spark, its voltage can disperse and present unstable situation, until the time interval of time t6 to t10, contact contacts with circuit loop fully, and voltage just levels off to stable by dispersing; The spread of voltage phenomenon that is produced during this switch moment contact circuit loop, can heal along with the increase of voltage and load and become obvious, and during the generation of this phenomenon, as repeatedly connecting and disconnecting being carried out in load in moment, for the precision equipment load, have sizable infringement, and the spark of its generation, more make this switch application when No Open Flames place, have very big danger.

Be the harm of avoiding above-mentioned switch to bring, the way of contact at make and break contact and circuit loop changes to some extent, increase the contact area of make and break contact and circuit loop, can allow contact moment and circuit loop comprehensive engagement, its voltage time graph of a relation sees also Fig. 3, compares with Fig. 2, though the range of instability time interval is shorter, but it still has spark and voltage dithering in moment, obviously still is not enough to provide can stablize in a flash and the circuit loop switch of no-spark.

Summary of the invention

Because the above-mentioned deficiency of existing switch, main purpose of the present invention is to provide a kind of push type contactless switch, and it can provide a burning voltage in moment, and can not produce spark when connecting, be applicable to precision instrument and

Need the hazardous area that No Open Flames to use.

The present invention should include button, push-button socket, mobile sensor block at least, receive inductor, binding post and circuit board, particularly:

One moves sensor block 15 rears engages a

sheet metal

151,15 rear ends that are bonded on button 10 of mobile induction module, and button 10 front ends have a flange 101.

Button 10 is installed on some push-button sockets 90, described button (10) outside is with an elastic parts (50) that is supported in described push-button socket 90 inboard offsets, and contact the flange (101) of described button (10), the user makes button 10 be in pressed state by pushing, utilize the elastic force of elastic parts 50, button 10 can recover reset condition automatically, and elastic parts 50 is generally a spring.

One electronic module 80 is arranged at described push-button socket (90) rear end, includes one and receives inductor 82, a binding post 83 and a circuit board 81, and binding post 83 is positioned at the rear end, is used for being connected with circuit loop.Be furnished with control circuit on the circuit board 81,,, and then change the closed circuit and open-circuit condition of this circuit loop with the control circuit on the start-up circuit plate 81 by receiving inductor 82 sensings because of the approaching sheet metal 151 of pressing button 10.

This device also can have an installation panel 40, and a upper end internal thread lasso 20 and a lower end inner screw sheath circle 30, push-button socket 90 extends one forward and has externally threaded sleeve pipe 901, and upper end internal thread lasso 20 and lower end internal thread lasso 30 are fixed in push-button socket 90 on the installation panel 40.Also tool can have a packing ring 25 between installation panel 40 and lower end internal thread lasso 30.Also can have a button cover 60, be installed on button 10 heads, observe for convenient, button cover 60 can be made by transparent material.

The control circuit of circuit board 81 comprises circuit and the electronic drive circuit of trembling that disappear, with intensifier work quality and control circuit work.This device also can have an indicator light 95, and control circuit is drawn by electronic module (80).

By cooperating of above-mentioned mechanical realization and control circuit, but user's pressing button 10, make mobile sensor block 15 near receiving inductor 82, after reception inductor 82 receives signal, the logical operation of filtration and control circuit of circuit of trembling through disappearing is controlled, change the open and-shut mode of switch, aforesaid switch, its binding post 83 can be made into Chang Kai or normally closed; Because switching circuit of the present invention is sealed in an electronic module 80 inside, except that the binding post 83 that must expose, it is exposed externally not have any circuit junction, therefore switch of the present invention is applicable to the place that No Open Flames, and switch of the present invention, its open and-shut mode that changes switch is a mode of utilizing the inductance induction, do not have because of moment contact and produce unstable voltage, see also Fig. 8, its voltage and time relationship almost do not have any labile state, so it is applicable to high-precision equipment.

Description of drawings:

Fig. 1: the voltage schematic diagram of perfect switch energized moment;

Fig. 2: have the switch connection power supply voltage schematic diagram of moment now;

Fig. 3: the existing back switch connection power supply voltage schematic diagram of moment of improveing;

Fig. 4: the utility model one preferred embodiment D structure exploded view;

Fig. 5-1: the utility model one preferred embodiment cutaway view one;

Fig. 5-2: the utility model one preferred embodiment cutaway view two;

Fig. 6: the power-supply circuit schematic diagram of the utility model control circuit;

Fig. 7: the utility model control circuit schematic diagram;

Fig. 8: the voltage schematic diagram of the utility model energized moment.

Embodiment:

Now in conjunction with the accompanying drawings the present invention is described in more detail with embodiment:

See also Fig. 4, installation panel 40 is the base surface that push type contactless switch of the present invention is installed, push-button socket 90 extends one forward and has externally threaded sleeve pipe 901, push-button socket 90 utilizes upper end internal thread lasso 20 and lower end internal thread lasso 30 screw locks on sleeve pipe 901, push-button socket 90 is fixed on the installation panel 40, between upper end internal thread lasso 20 and installation panel 40, also a packing ring 25 can set up, to increase tightness.Button 10 is installed within the push-button socket 90, and button 10 front ends have a flange 101, one elastic parts 50 is located at button 10 peripheries, utilize push-button socket 90 inner shell wall offsets to support (seeing also Fig. 5-1), elastic parts 50 contacts the flange 101 of button 10, button 10 is pushed away toward the place ahead, the elastic parts 50 general springs that adopt herein, the head of button 10 can also be set up a button cover 60, can allow the more convenient pressing button 10 that goes of user, button 10 rears are provided with one and move sensor block 15, and sheet metal 151 is to be fixed on mobile sensor block 15 rears with laminating type.

The electronic module 80 of sealing, inside is provided with a circuit board 81, one receives inductor 82, there is a binding post 83 its rear end, in order to be connected with circuit loop, for making switch of the present invention can be used in high-tension apparatus, the circuit board 81 of electronic module 80 inside, receive inductor 82 and have two groups respectively with binding post 83, wherein one group can be born high pressure high capacity output, another group then is used for general voltage output, after two groups of devices are installed on a half-mask can 84 respectively, be combined into one complete and the sealing electronic module 80, the electronic module 80 that this assembling is finished snaps together with push-button socket 90 assemblings, see also figure 5-1 and Fig. 5-2, the user can utilize said structure in view of the above, pushes this button 10 and makes mobile sensor block 15 near sealed electrical submodule 80, makes the reception inductor 82 of electronic module 80 sense mobile sensor block 15, and utilize the restoring force of elastic parts 50, the configuration state before recovering to push.In addition for making the user can clearly be well understood to the conversion of closing closure, the electronic module 80 of sealing is provided with an indicator light 95 control circuits, come out by electronic module 80 back panel wirings, and pass button 10 inside and be positioned at the indicator light 95 of button 10 front sides with control, by the light on and off of indicator light 95, the user can clearly be well understood to the state that opens or closes, and button cover herein 60, also make with transparent material, can allow light penetration, more convenient user observes the light on and off of indicator light 95.

On the circuit board 81 in the sealed electrical submodule 80, be furnished with control circuit, its electronic circuitry sees also Fig. 6 and shown in Figure 7, Fig. 6 is the power-supply circuit schematic diagram of control circuit, it can receive an alternating voltage, its conversion control circuit is driven required voltage output, Fig. 7 then is the control circuit of this creation, it can be distinguished into (A), (B), (C), (D), (E) five circuit blocks generally, the circuit of (A) block comprises reception inductor 82, and it is used to respond to the approaching of mobile sensor block 15; The circuit of (B) block is the signal demodulator circuit, is used to produce the logic current potential of action; The circuit of (C) block comprises a circuit and the logical operation chip of trembling that disappear, and is used to eliminate the misoperation of button 10, guarantees that the action of switch is accurate; The circuit of (D) block then is the drive circuit of indicator light 95; The circuit of (E) block then is the drive circuit of switch, is used for the switching in control circuit loop.

Claims

1, a kind of push type contactless switch is characterized in that comprising:

One moves sensor block (15), and the rear engages a sheet metal (151);

One button (10), described mobile sensor block (15) is engaged in the end of described button (10), and described button (10) front end has a flange (101);

One push-button socket (90), described button (10) are installed on the described push-button socket (90), and described button (10) outside is with one and is supported in the elastic parts (50) of the inboard offset of described push-button socket (90), and contacts the flange (101) of described button (10);

One electronic module (80), be arranged at described push-button socket (90) rear end, include one and receive inductor (82), a binding post (83) and a circuit board (81), described circuit board is furnished with control circuit on (81), by described reception inductor (82) sensing because of pushing the approaching sheet metal (151) of described button (10), to start the control circuit on the described circuit board (81).

2, push type contactless switch as claimed in claim 1, it is characterized in that, also have an installation panel (40), a upper end internal thread lasso (20) and a lower end inner screw sheath circle (30), described push-button socket (90) extends one forward and has externally threaded sleeve pipe (901), and described upper end internal thread lasso (20) is used for described push-button socket (90) is fixed in described installation panel (40) with described lower end internal thread lasso (30).

3, push type contactless switch as claimed in claim 2 is characterized in that, also has a packing ring (25) and is positioned between described installation panel (40) and the described lower end internal thread lasso (30).

4, push type contactless switch as claimed in claim 1 is characterized in that, also has a button cover (60), is installed on described button (10) head.

5, push type contactless switch as claimed in claim 1 is characterized in that, described elastic parts (50) is a spring.

6, push type contactless switch as claimed in claim 1 is characterized in that, the control circuit of described circuit board (81) comprises circuit and the electronic drive circuit of trembling that disappear.

7, push type contactless switch as claimed in claim 1 is characterized in that, the binding post (83) of described electronic module (80) is for often opening.

8, push type contactless switch as claimed in claim 1 is characterized in that, described electronic module (80) binding post (83) be normally closed.

9, push type contactless switch as claimed in claim 1 is characterized in that, also has an indicator light (95), and the control circuit of described indicator light (95) is drawn by electronic module (80).

10, push type contactless switch as claimed in claim 9 is characterized in that, described button cover (60) is made by transparent material.