CN101252057B - Minitype inversion switch - Google Patents

Abstract

The invention discloses a miniature inverted switch which belongs to the electronic switch technical field. The invention comprises a shell and an inverted switch structure which is arranged inside the shell, wherein, the inverted switch structure is as follows: a magnetosensitive element, namely a miniature dry reed tube contact is triggered by a miniature magnet to attract or isolate to controlthe on/off of a power supply circuit through the movement process when the miniature magnet is inverted. The miniature switch has the advantages that: firstly, the miniature switch is a key techniquein the miniature power supply control technology and is also a key component for realizing micropower consumption of a storage and test system; secondly, shock and vibration resistant buffer materials are filled between the shell and the miniature dry reed tube, thereby the shock resistance and the vibration resistance of the miniature inverted switch are improved; thirdly, the high and low temperature resistant range of the switch is between 40 DEG C below zero and 50 DEG C, thereby the high and low temperature resistant requirements of an electronic storage and test system can be met. Moreover, the switch achieves the expectation effect through practical verification and is widely promoted currently. The miniature inverted switch with micro-volume, micropower consumption, high and low temperature resistance, high shock resistance and vibration resistance is worthy of being recommended, adopted and promoted in applicable technical fields.

Description

Minitype inversion switch

One. technical field

Minitype inversion switch disclosed by the invention belongs to miniature electronic switching technique field, and what be specifically related to is a kind of miniature automatic upper electrical switch when it is inverted.

Two. background technology

When the application memory measuring technology was carried out on-the-spot test, test macro was installed on the measured body usually, because the residing environment of measured body is abominable, test macro had been proposed strict demand: microbody is long-pending, little power consumption, high-low temperature resistant, anti-HI high impact, anti-vibration etc.The long-pending requirement of microbody makes dynamic checkout unit very harsh to the volume requirement of power supply, will reduce the power consumption of whole test system as much as possible for this reason.For example " put into the formula electric voltage detector " when measuring the gun pressure of ammunition guarantor low temperature, must reach 48h with the ammunition insulation, heavy caliber combustible cartridge case ammunition is protected low temperature may reach 72h, put into electric voltage detector and must before the ammunition insulation, put into cartridge case, therefore before protecting low temperature, electric voltage detector is powered on, but only keep " wait work " state (electric current is less than 1 μ A), microswitch by certain physics before test makes electric voltage detector enter operating state (electric current 10mA), after measuring end, gun pressure changes the data hold mode again automatically over to, keep low-power consumption, cut off the power supply at once after the sense data, can realize little power consumption of test macro like this.And the power supply control technology is the key technology of the little power consumption technology of storage test, and miniature upper electrical switch then is the critical component of the little power consumption of realization system.

At present, we have developed the multiple miniature control technology that powers in storage test practice: power on as miniature timing, and little power consumption of feasible system, but shortcoming is must finish test within the predetermined time, lack flexibility, and timer itself to consume certain energy.Once studied the method that other power on to electric voltage detector outside cartridge case, as ultrasonic method, radioactive ray, but because of ultrasonic and radioactive ray influential to the stability of gunpowder, and the power consumption of ultrasonic and radiation detecting circuit greatly, can not meet the demands.Once considered the externally-applied magnetic field signal, but the steel cartridge case has certain shielding action to magnetostatic field, and manograph is the heavy wall steel cylinder of the high pressure of anti-800MPa, there is very strong shielding action in magnetic field, so said method is infeasible.In range test, the placement of ammunition is not that horizontal positioned is exactly that the bullet point is vertically placed up usually, therefore considers a kind of minitype inversion upper electrical switch, once design miniature mercury and be inverted upper electrical switch, but mercury solidifies in the time of-38.9 ℃, and the switch conduction impedance is bigger, and effect is undesirable.Consider to use the double-ball type minitype inversion switch, because under the HI high impact situation, gold-plated steel ball surface damage makes contact resistance bigger, effect is also undesirable.The final dry-reed inversion switch of considering the design miniature built-in.This technology has been applied to put into electric voltage detector, and successful Application in the cannon chamber pressuring test of certain base national range achieves the desired result through this switch of practical validation, and this product has been promoted on a large scale and come at present.

Three. summary of the invention

The objective of the invention is: provide this minitype inversion switch to society, for the science and technology and the Defence business of China are done a little work.

Technical scheme of the present invention is such: this minitype inversion switch is that microbody is long-pending (as the microswitch volume less than 0.5cm ³), the test macro of little power consumption (when not working power consumption approach zero), high-low temperature resistant (as high low temperature resistance range-40 ℃～50 ℃), anti-HI high impact (being not less than 10000g as anti-HI high impact), anti-vibration (than strong vibration) or method of testing be with the minitype inversion upper electrical switch that uses, this switch includes housing and interior inversion switch structure thereof, and technical characterstic is: moving process triggered the on off state of magnet-sensitive element contact adhesive/separation with control power supply power supply road when this microswitch adopted inversion by miniature magnet.Described magnet-sensitive element for example is magnet-sensitive elements such as tongue tube, miniature magnetic switch.Moving process triggered the open/close state of magnet-sensitive element-miniature reed switch contact adhesive/separation with control power supply power supply road when a. this microswitch adopted inversion by miniature magnet, adopt passive miniature tongue tube, power consumption to be triggered is approximately zero, meets the requirement of little power consumption.The magnetic line of force direction of the miniature magnet that this inversion is moved and the magnetic line of force direction of miniature tongue tube are provided with abreast or are installed in this minitype inversion switch.B. this microswitch is provided with irony suction piece, described irony inhales that piece normally contacts with miniature magnet or near lower magnetic force attraction, miniature magnet can not moved easily trigger miniature reed switch contact adhesive, this has just increased the stability and the reliability of this microswitch open/close state.When this microswitch was inverted greater than certain set angle, miniature magnet has overcome irony suction piece under action of gravity separated with miniature magnet magnetic attraction.C. setting and computing formula that described this microswitch inversion process is toppled over greater than certain set angle are: F _Inhale+ G _MagnetCos α f _s==G _MagnetSin α is in the formula: F _InhaleBe the attraction magnetic force of miniature magnet and irony suction interblock, G _MagnetBe the weight of miniature magnet, f _sBe the coefficient of friction between miniature magnet and the housing, α is that toppling over of microswitch setting makes miniature magnet overcome the critical angle that magnetic attraction is separated with irony suction piece under its action of gravity.We are can be according to the computing formula of above-mentioned set angle given or set each parameter in the formula.

According to above-described minitype inversion switch, technical characterstic also has: be filled with the padded coaming of shock resistance and vibration between described miniature tongue tube and this minitype inversion switch housing, improved the ability of the shock resistance and the anti-vibration of this minitype inversion switch.The padded coaming of described shock resistance and anti-vibration can be selected the padded coaming of the shock resistance and the anti-vibration of public commercial goods, all can use as long as this material can be finished shock resistance and anti-vibration material its function, that be suitable for.

According to above-described minitype inversion switch, technical characterstic also has: this microswitch is provided with delay circuit, described delay circuit is the RC delay circuit that is made of resistance and electric capacity, its input connects with reed switch contact adhesive/separation signal output, and its output is the control end of the on off state on power supply power supply road.Fig. 5 shows the concrete structure schematic diagram of the delay circuit of this minitype inversion switch setting.

The advantage of minitype inversion switch of the present invention has: 1. this miniature upper electrical switch key technology that is the micro power control technology also is a critical component of realizing the little power consumption of memory test system; 2. be filled with the padded coaming of shock resistance and vibration between the housing of this minitype inversion switch and miniature tongue tube, improved the ability of the shock resistance and the anti-vibration of this minitype inversion switch, anti-HI high impact ability is not less than 10000g; 3. this miniature upper electrical switch high low temperature resistance range can satisfy the demand of electronics memory test system to high-low temperature resistant of putting at-40 ℃～50 ℃; 4. this minitype inversion switch technology has been applied to put into electric voltage detector, and successful Application in the cannon chamber pressuring test of certain base national range achieves the desired result through this switch of practical validation, and this product has been promoted on a large scale and come at present.This microbody is long-pending, the minitype inversion switch of little power consumption, high-low temperature resistant, anti-HI high impact, anti-vibration is worth recommending, adopting and promote in the technical field that is suitable for.

Four. description of drawings

Figure of description of the present invention has 5 width of cloth:

Fig. 1 is this minitype inversion switch structure orthogonal view;

Fig. 2 is this minitype inversion switch vertical view;

Fig. 3 is this minitype inversion switch bottom view;

The parallel schematic diagram of magnet movement direction that Fig. 4 is provided with for this minitype inversion switch with tongue tube;

Fig. 5 is the schematic diagram of the delay circuit of minitype inversion switch setting.

Adopted unified label in each figure, promptly same object is used same label in each figure.In each figure: 1. circuit board; 2. the jackscrew of fixed magnet; 3,4. padded coaming; 5. tongue tube; 6. miniature magnet; 7. slide block; Wherein 2,6,7 form the mass that moves up and down in housing.8. housing; 9. the jackscrew of seal casinghousing; 10. irony is inhaled piece; 11. the gap on the housing; 12. the first line of a couplet wiring hole of tongue tube 5; 13. lead-in wire groove; 14. the second line of a couplet wiring hole of tongue tube 5; The N of N, S. magnet and the S utmost point; K. minitype inversion switch; GND. hold; R ₁～R _5.Be resistance; C ₁～C _2.Be electric capacity; IC _LBe integrated circuit (IC) chip; D _LBe diode; L _LBe light-emitting diode.

Five. specific embodiments

Non-limiting examples of the present invention is as follows:

Embodiment one. minitype inversion switch

This routine minitype inversion switch concrete structure is united by Fig. 1～Fig. 5 and is illustrated, and this minitype inversion switch is that microbody is long-pending (as the microswitch volume less than 0.5cm ³), little power consumption (power consumption approaches zero when not working), high-low temperature resistant (as high low temperature resistance range-40 ℃～50 ℃), anti-HI high impact (being not less than 10000g) as anti-HI high impact, the minitype inversion upper electrical switch that the test macro of anti-vibration (than strong vibration) or method of testing are used, this switch includes housing and interior inversion switch structure thereof, Fig. 1～Fig. 3 unites the concrete structure that this microswitch is shown, in this three figure: 8 is the housing of this switch, gap 11 is arranged on the housing, lead-in wire groove 13 etc., the inversion switch structure that is provided with in housing 8 has: the jackscrew 9 of seal casinghousing, circuit board 1, miniature tongue tube 5, the first line of a couplet wiring hole 12 of tongue tube 5, the second line of a couplet wiring hole 14 of tongue tube 5, miniature magnet 6, the jackscrew 2 of fixed magnet, slide block 7, by 2,6,7 form the mass that moves up and down in housing, the irony that this microswitch is provided with is inhaled piece 10, irony inhales that piece 10 normally contacts with miniature magnet 6 or near lower magnetic force attraction, miniature magnet 6 can not moved easily trigger miniature tongue tube 5 contact adhesives, this has just increased the stability and the reliability of this microswitch open/close state.When this microswitch was inverted greater than certain set angle, miniature magnet 6 has overcome irony suction piece 10 under action of gravity separated with the magnetic attraction of miniature magnet 6.Shown in figure, moving process triggers magnet-sensitive element when adopting inversion by miniature magnet 6, for example be that miniature tongue tube 5 is made the on off state of magnet-sensitive element contact adhesive/separation with control power supply power supply road, promptly adopt moving process when being inverted to trigger miniature tongue tube 5 contacts adhesive/separations, the inversion switch structure of Here it is this microswitch with the power open/close state on road of control power supply by miniature magnet 6.Adopt passive miniature tongue tube, power consumption to be triggered is approximately zero, meets the requirement of little power consumption.This minitype inversion switch is when it is inverted, and the magnetic line of force direction of the magnetic line of force direction of mobile miniature magnet 6 palpus and miniature tongue tube 5 is provided with abreast or is installed in this minitype inversion switch, and Fig. 4 illustrates the structure situation of this set or installation.Setting and computing formula that described this microswitch inversion process is toppled over greater than certain set angle are: F _Inhale+ G _MagnetCos α f _s==G _MagnetSin α is in the formula: F _InhaleFor miniature magnet 6 and irony are inhaled the attraction magnetic force of 10 of pieces, G _{Magnetic Iron}Be the weight of miniature magnet 6, f _sBe the coefficient of friction between miniature magnet 6 and the housing 8, α is that toppling over of microswitch setting makes miniature magnet 6 overcome the critical angle that magnetic attraction is separated with irony suction piece 10 under its action of gravity.We are can be according to the computing formula of above-mentioned set angle given or set each parameter in the formula.Described miniature tongue tube 5 and 8 of this minitype inversion switch housings are filled with the padded coaming 3,4 (3 among Fig. 1 and 4) of shock resistance and vibration, have improved the ability of the shock resistance and the anti-vibration of this minitype inversion switch.The padded coaming of described shock resistance and anti-vibration can be selected the padded coaming of the shock resistance and the anti-vibration of public commercial goods, all can use as long as this material can be finished shock resistance and anti-vibration material its function, that be suitable for.This microswitch also is provided with delay circuit, described delay circuit is the RC delay circuit that is made of resistance and electric capacity, its input connects with tongue tube 5 contacts adhesive/separation signal output, its output is the control end of the on off state on power supply power supply road, and Fig. 5 shows the concrete structure schematic diagram of the delay circuit of this minitype inversion switch setting.

Embodiment two. minitype inversion switch

This routine minitype inversion switch general structure can be united with Fig. 2～Fig. 4 etc. and illustrated, minitype inversion switch that this is routine and embodiment one difference have: 1. described microswitch setting is toppled over critical angle α and is chosen as 60～75 degree scopes usually, certainly also can be bigger again or littler; 2. described magnet-sensitive element is miniature magnetic switch; 3. described delay circuit, available public technology designs and manufactures, as long as they can finish all can adopting of its function; 4. all available public technology such as the electronic devices and components that adopted in should the delay circuit of example, integrated circuit chip design, also can use commodity such as known, public, commercially available electronic component, integrated circuit chip to substitute, as long as they can finish all can adopting of its function.All the other do not state this routine minitype inversion switch, are same as entirely described in the embodiment one, no longer repeat.

Claims (3)

1. minitype inversion switch, this switch includes housing and interior inversion switch structure thereof, be characterised in that: moving process triggered the open/close state of miniature reed switch contact adhesive/separation with control power supply power supply road when this microswitch adopted inversion by miniature magnet, and the magnetic line of force direction of the miniature magnet that this inversion is moved and the magnetic line of force direction of miniature tongue tube are arranged in this minitype inversion switch abreast;

This microswitch is provided with irony and inhales piece, and described irony is inhaled that piece normally contacts with miniature magnet or attracted near lower magnetic force, and when this microswitch was inverted greater than certain set angle, irony suction piece overcame magnetic attraction with miniature magnet and separates;

Setting and computing formula that described this microswitch inversion process is toppled over greater than certain set angle are: F _Inhale+ G _MagnetCos α f _s==G _MagnetSin α is in the formula: F _InhaleBe the attraction magnetic force of miniature magnet and irony suction interblock, G _MagnetBe the weight of miniature magnet, f _sBe the coefficient of friction between miniature magnet and the housing, α is that toppling over of microswitch setting makes miniature magnet overcome the critical angle that magnetic attraction is separated with irony suction piece under its action of gravity.

2. minitype inversion switch according to claim 1 is characterised in that: the padded coaming that is filled with shock resistance and vibration between the housing of described miniature tongue tube and this minitype inversion switch.

3. minitype inversion switch according to claim 2, be characterised in that: this microswitch is provided with delay circuit, described delay circuit is the RC delay circuit that is made of resistance and electric capacity, its input connects with reed switch contact adhesive/separation signal output, and its output is the control end of the on off state on power supply power supply road.

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