CN1050903C - Seismosensitive element - Google Patents

Abstract

To obtain a normally ON-type seismic sensor by using a solid-state conductive ball. An airtight container is constituted of a metal disk, to which a conducting terminal pin 5 is fixed in the airtight and insulating mode, and a conductive housing 2. A lower insulator 6 having a slant surface 6B, whose center is concave, is fixed in the housing 2. A conductive inertial ball 8 is housed on the slant surface 6B so that ball can be rolled. A lower contact member 7, which is electrically connected to the housing 2, is inserted at the center of the slant surface. A flexible, conductive upper contact member 9 is fixed to the conducting terminal pin 5 and is always in contact with the inertial ball 8. At the stationally time, the inertial ball 8 is located on the lower contact member 7, and the upper contact member 9 and the lower contact member 7 are electrically connected. The conducting terminal pin 5 and the housing 2 are electrically connected. When acceleration is applied, the inertial ball 8 rolls on the slant surface, and the contact with the lower contact member 7 is separated. The conducting terminal pin 5 and the housing 2 are electrically separated.

Description

Seismosensitive element

The present invention relates to Seismosensitive element for a kind of isotropic directivity of checking out seismism etc., it can be contained on the various automatons of kerosene warming stove, gas combustion apparatus and electrical equipment etc., in order to measure, detection signal is provided for described automaton such as the such vibrations of earthquake.

Check out that the look-ahead technique of quick shake element of vibration is known several examples, for example, the patent of invention of Japan open nineteen eighty-two No. 76421 (spy opens clear 57-76421 communique) has disclosed a kind of mensuration vibrations element.This Seismosensitive element that is disclosed is all the time but moving contacting plate to be pushed down with a steel ball, but this steel ball once be subjected to vibrating on the bottom toward around above roll and remove pressure this moving contacting plate, set movable contact and static contact are left mutually produce a detection signal simultaneously.In addition, the patent of invention of Japan disclose 1984 No. 228123 (spy opens clear 59-228123 communique) have introduced a kind of Seismosensitive element that is packaged with a mercury bulb in a metal matter container.

Recently above-mentioned Seismosensitive element and the automaton of handling its signal are installed on kerosene warming stove and the gaseous combustion facility, when this Seismosensitive element is checked out the vibration of earthquake etc., detection signal is provided for this automaton, and makes this burner be able to the function of self-extinguishing.In this case, these Seismosensitive elements generally need miniaturization.Open above-mentioned spy on the precedent of the Seismosensitive element shown in clear 57-76421 number, the contact pressure between two contacts must keep strong degree, in order to avoid the resistance between this contact increases.If these two contacts are normally closed, be the weight that contact pressure relies on steel ball, and in order to keep certain pressure between the contact, with regard to run into unavoidably steel ball weight limited with and the problem of miniaturization, the result needs to enlarge pressure texture again, also brings difficulty must for the miniaturization problem of whole device.Open on the example shown in clear 59-228123 number the spy; the normally closed Seismosensitive element that closes pattern of running jointly of this water silver granuel; though it does not have the resistance problems between the contact; and ratio uses the pattern of steel ball can reach miniaturization and keep its performance long-term stability; but; along with the protection environment requirement improves,, should not re-use mercury at present in the face of social demand.So it is a kind of that people need, though do not use mercury but still have and uses the same characteristic of mercury, small-sized again, reliable, the lower-cost Seismosensitive element that is suitable for producing in batches of while.However, because mercury is liquid, its structure intactly can not be applied to again on the quick structure of shaking with solid conduction matter ball.

The applicant had proposed a kind of Seismosensitive element that addresses the above problem and the detection oscillation device that uses this Seismosensitive element.To this, the patent of invention of Japan is disclosed 1994 No. 137928 (spy opens flat 6-137928 communique) go up this Seismosensitive element that discloses, with reference to Fig. 8 explanation.This Seismosensitive element 101, the inertia ball 104 that in the airtight container that metallic plectane 102 and housing 103 constitutes with each, holds the such conduction matter of steel ball, and, by insulating packing 106, as glass etc., the matter of will conducting electricity lead-in wire pin 105 is running through hermetically and is being encapsulated on the plectane 102.A conductive contact piece 107 is fixed on the end of the lead-in wire pin 105 in the container, and rubber-like conduction matter pinniform part 107A fixes this contact element 107.The Seismosensitive element 101 of Gou Chenging like this, when non-action at ordinary times static, inertia ball 104 is positioned at the central part of housing 103 and does not contact with the pinniform part 107A of contact element, and at this moment, the circuit between lead-in wire pin 105 and plectane 102 is the state of " breaking ".When Seismosensitive element 101 1 is subjected to stipulating above big vibration, inertia ball 104 slips between the bottom of pinniform part 107A and housing 103 with regard to rolling, and the short circuit mutually between pin 105 and the housing 103 that will go between has formed the state that the row's circuit from lead-in wire pin 105 process contact elements 107, inertia ball 104 and housing 103 to plectane 102 " leads to ".

It is exactly to be not limited to the same miniaturization of the mode of both depositing of using inertia ball and reaching and use mercury that above-mentioned spy opens the Seismosensitive element shown in the flat 6-137928 communique, yet, because it belongs to the normally opened contact form, for in the normality of non-action, on the wiring from the Seismosensitive element to the signal processing apparatus, test and confirm whether line function is normal, must use part device on circuit another set of check.Therefore, preferably provide the quick parts that shake that use inertia ball and belong to the normally closed contact form, this responsive vibration automaton of the mode of both depositing can be substituted at an easy rate.

The object of the present invention is to provide a kind of Seismosensitive element of reply above-mentioned requirements, it is characterized in that; A conductive circular plate and the cylindrical shape conductive shell that the end is housed form a closed container simultaneously, and a lead-in wire pin runs through this plectane hermetically by insulating packing.The electrical insulation of at least one is fixed on this internal tank basically, it is beveling above inner bottom, it is raised gradually from bottom center is outwards coaxial, and, the central part of this bottom surface has a through hole, a conductive lower portion contact element is installed on the housing bottom surface or near it, so that one end and housing current lead-through, and the terminal bolt of its other end is applied in this through hole.A conduction inertia ball is positioned on the inclined-plane, the end of insulating part, and this inertia ball can roll, and housing is in normal posture stationary state, is located at owing to gravity on the through hole of central part to be parked on the upper end of lower terminal end bolt, makes electric current be able to mutual conduction.On the end in the housing of lead-in wire pin; be fixed with a conduction matter top sub; it has with the lead-in wire pin is a plurality of conduction matter pinniform parts as contact portion of the approximate concentric arrangement in center; this pinniform partly has elasticity and contacts inertia ball all the time and keep conducting; on this end, be fixed with a fender again; when inertia ball was subjected to the acceleration of excessive degree, this fender protection top sub to avoid because of inertia ball and collides the distortion of subduing that produces.When inertia ball rolls on the inclined-plane because of leaving above-mentioned through hole in the vibration that is subjected to surpass limiting, promptly between itself and lower terminal end bolt, form non-conduction state, this non-conduction operating state keeps the above long time of regulation, and when inertia ball static, by the weight of this ball itself and the elasticity of top sub, and make it be contacted with the lower terminal end bolt.

Another aspect by Seismosensitive element of the present invention is characterised in that: the formation of above-mentioned lower terminal end bolt is exactly to have the shape that can bring into play predetermined elasticity, it is to the elastic force of inertia ball, promptly draft on the through hole at the bottom of inertia ball is positioned at insulating part the time, make it not be subjected to the influence of microvibration and can keep the degree of the contact condition of energising all the time inertia ball.

Another aspect by Seismosensitive element of the present invention is characterised in that: be fixed with up and down separately and separately independently insulating part in closed container, the insulating base of its underpart has the inclined-plane and is positioned near the container bottoms, the top insulation cover plate has drum slightly and the housing inner face or the lead-in wire that are fixed near the top sub are sold, when inertia ball moved to amplitude peak, this top and bottom insulating part are just common to stop inertia ball directly to touch the housing inner face.

Be characterised in that by other of Seismosensitive element of the present invention: when inertia ball moved to amplitude peak, fender also had jointly with insulating base and stops inertia ball directly to contact the effect of housing inner face.

Below describe with reference to the accompanying drawings, wherein each page accompanying drawing is:

Fig. 1 is the longitudinal sectional drawing according to first kind of specific embodiment of Seismosensitive element of the present invention;

Fig. 2 is the longitudinal sectional drawing according to a major part in the middle of second kind of specific embodiment of Seismosensitive element of the present invention;

Fig. 3 is the longitudinal sectional drawing according to the third specific embodiment of Seismosensitive element of the present invention;

Fig. 4 is the sectional view along this Seismosensitive element of A-A line gained among Fig. 3;

Fig. 5 is the longitudinal sectional drawing according to the 4th kind of specific embodiment of Seismosensitive element of the present invention;

(A) of Fig. 6 is the longitudinal sectional drawing according to the 5th kind of specific embodiment of Seismosensitive element of the present invention, (B) then is its side longitudinal sectional drawing;

(A) of Fig. 7 is to use a kind of longitudinal sectional drawing of specific embodiment of the detection oscillator of Seismosensitive element of the present invention, and (B) is the transverse cross-sectional view of present embodiment;

Fig. 8 is the longitudinal sectional drawing of a kind of concrete example of the Seismosensitive element before the present invention.

Now according to the accompanying drawing narration first embodiment of the present invention.In Fig. 1, Seismosensitive element 1 is having the columnar metal shell 2 and the circular metal plate 3 of bottom, and the mode by annular projection welding etc. is packaged in this both flange 2A and 3A hermetically and goes up and form its outer container.In encapsulation, the air of preferably taking out earlier in the container is enclosed as gases such as hydrogen, helium, argon, nitrogen again, makes the surface of each contact element described later and inertia ball that pollution or corrosion etc. not take place according to this transposing gas.In the summary center of plectane 3, be provided with a through hole 3B.A conductive lead wire pin 5 that runs through this through hole 3B by insulating packing 4, as glass etc., is fixed on the plectane 3 hermetically.

The insulating base 6 that constitutes with insulation materials such as pottery or plastics in closed container embeds the bottom of being fixed in shell 2.The rib 6D that forms around it is for making its auxiliary embedding.Insulating base 6 has collet 6A, and holds bottom contact element 7 in the space that collet 6A forms.The dip plane 6B that formation is raised towards periphery with one heart circularly gradually by the center on insulating base 6.Illustrated its shape of Fig. 1 is the taper shape that is drafted the straight line rotation of gradient and forms, but, this shape is not limited to a kind of taper shape, for example, the gradient that changes therebetween, perhaps, convex surface that forms with the curve rotation of convex or concavity bending upward or concave curved surface etc. also can.Moreover if this curved surface does not change its vergence direction as long as keep raising gradually towards periphery, the curved surface of the curvature that midway changes slightly is also passable.Central part at dip plane 6B is provided with a through hole 6C, and an end of above-mentioned bottom contact element 7 promptly runs through this through hole 6C as terminal bolt 7A and extends to the top.

Bottom contact element 7 is to be fixed in static contact on the bottom surface 2B of housing by methods such as welding, and its terminal bolt 7A is with formations such as silver alloy, but and it is acted on when the contact to the 8 mutual clutches of following inertia ball.The form of this terminal bolt 7A, for example shown in Figure 1, on it, be provided with a pit 7B, and make it till the vibration more than the setting is in addition on the Seismosensitive element 1, rely on gravity to keep inertia ball 8 thereon always.In addition, replace pit 7B promptly to adopt the form that is provided with concave surface, perhaps, as shown in Figure 2, design differing heights between the upper end 17A of the bottom of dip plane 6B and terminal bolt 17, and roll on it when making inertia ball 8 so as not to the vibration below setting, such formation also can.Wherein, on formation shown in Figure 1, the acceleration alpha that inertia ball 8 will begin to roll can be represented by following numerical expression: $\mathrm{\α}=\frac{\mathrm{\γ}\·G}{\sqrt{R^2-{\mathrm{\γ}}^2}}$ But in this numerical expression, G is the acceleration of gravity, and R is the radius of inertia ball 8, and γ is the radius of pit 7B.However, adjust in a little high numerical value of the numerical value that gives than this numerical expression according to the effect of top described later contact element 9 actually.

On the 6B of the dip plane of insulating base 6, be loaded with inertia ball 8.It can make with the stainless steel of iron or its alloy, in addition, can use copper or aldary, or uses other metal as hard lead etc.The material that uses is if iron, copper etc. then have in air easily oxidation and produce the anxiety that hinders the epithelium that electricity leads, preferably use noble metals such as gold, silver or nickel to be electroplated, perhaps electroplated,, made it to be fit to application target to prevent corrosion with the alloy of plumbous and tin.But subsidiary saying just is not limited to above-mentioned several materials or job operation so long as have the solid ball of the electric conductivity that is suitable for purpose.

Inertia ball 8 is positioned at when static state on the through hole 6C at 6B center, dip plane all the time, vertically contacts with the terminal bolt 7A of bottom contact element 7.Seismosensitive element 1 as when being subjected to stipulating above vibration because of earthquake etc., the inertia ball 8 of accepting the above acceleration of regulation just leaves through hole 6C and rolls on the 6B of dip plane, has promptly broken thus and the contacting of terminal pillar 7A.

At the end in the closed container of being positioned at of lead-in wire pin 5, through the fixing fender 10 of the method for jam weld etc., the while is clamping upper joint 9 between the two.This top sub 9 itself possesses a plurality of rubber-like pinniform part 9A.On present embodiment, this pinniform part 9A extends to the direction every 60 ° for six petals of middle imago like that with the lead-in wire pin.If the quality of inertia ball 8 about 0.7 when gram as the material that top sub 9 is suitable for using, then is the phosphor bronze sheet of 0.01 to 0.02 millimeter of thickness for example.It all was bound to be partial to inboard all layouts when inertia ball was removed in supposition of each of this pinniform part 9A first end formation, thereby can contact inertia ball 8 all the time.In addition, the formation of pinniform part 9A, slightly 0.3 millimeter of width, and the enough elasticity of tool thus, also make its at least two can follow all the time and the contacting of maintenance and inertia ball 8 when inertia ball 8 rolls.Moreover, the number of pinniform part 9A with and recuperability, must consider the factor of influence that the acceleration that begins to roll to inertia ball 8 brings and resistance etc. and determine.

Below the fixed part of top sub 9 and lead-in wire pin 5, be provided with fixedly fender 10, thereby near the fixed part of inertia ball 8 collision top subs 9 time, also can prevent plastic yield.For example; on the transportation way, be displaced among Fig. 1 with the position 8A shown in the dotted line because of beating sometimes in the inertia ball 8 that vibrated; at this moment, if there is not a fender 10, inertia ball 8 just conflicts near the fixed part to top sub 9 and lead-in wire pin 5 and may cause unexpected distortion.If on the root of pinniform part 9A plastic yield takes place, big displacement is caused in the first end of this pinniform part with regard to big distortion takes place.But as shown in the Examples, if fender 10 is set, in textural characteristic that then can stable for extended periods of time.

Resembling on the position that surrounds top sub 9, be made for slightly columnar insulation cover plate 11 with pottery or plastics equally with insulating base 6, by the rib 11A that its neighboring constitutes, be embedded into and be fixed in the housing 2.11 of this insulation cover plates are collaborative with insulating base 6, be connected in inertia ball 8 when moving to maximum displacement state with the position 8B shown in the dotted line, its both sides' circumference 11B and 6E also can catch inertia ball 8, thereby, between the internal face of this position 8B inertia ball 8 and housing 2, can also leave a little gap and avoid contacting.Therefore, be connected in vibration when excessive this Seismosensitive element 1 do not send the signal of " lead to ", and, when control object apparatus inclination itself or quilt are laid across, also can keep " breaking " signal condition really.

Describe the course of action of the Seismosensitive element of the present invention 1 of the foregoing description now.It is when normal posture state static, inertia ball 8 rests on the through hole 6C of dip plane 6B, comply with the elastic force contact of the weight of inertia ball 8 itself and top sub 9 and can push down the terminal bolt 7A of bottom contact element 7, at this, form the state of " leading to " successively to row's circuit of plectane 3 through top sub 9, pinniform part 9A, inertia ball 8, terminal bolt 7A, bottom contact element 7 and housing 2 from lead-in wire pin 5.

Seismosensitive element 1 is received the above acceleration of regulation, and for example, the cycle of running into is when being horizontal vibration more than 0.2 to 1 second 120 gals, inertia ball 8 just leaves through hole 6C and rolls on the 6B of dip plane, be that inertia ball 8 leaves terminal bolt 7A,, above-mentioned row's circuit disconnected the above time of regulation at this.Thus, the signal processing apparatus that is connected with Seismosensitive element 1 is received the signal that this checks out vibration, if kerosene warming stove or gas combustion apparatus, promptly by the action of control device, it can carry out appropriately handling of self-extinguishing.Thereafter, Seismosensitive element 1 is got back to former static state, and inertia ball 8 just revert on the through hole 6C of dip plane 6B, contacts the circuit that terminal bolt 7A forms " leading to " again again.At this,,, just can recover energising immediately so inertia ball 8 contacts terminal bolt 7A when returning because pinniform part 9A and inertia ball 8 are keeping contact condition.And, because top sub 9 keeps all the time with inertia ball 8 state of contact with its a plurality of pinniform part 9A it given pressure, so, even use, also can keep the contact site resistance of enough light little degree than more small-sized in the past inertia ball.

Because bottom contact element 7 is static contact in the above-described embodiments, so, vibration below running into setting and when detecting the state that earthquake-predictive device also should not move, inertia ball 8 has and shakes on terminal bolt 7A or fine motion up and down, and result's contact pressure between inertia ball 8 and terminal bolt 7A can cause variation.For this reason, the contact site resistance of temporary transient inertia ball 8 and terminal bolt 7A, for example, in several milliseconds or time below it, present several kilohms or bigger value or the like, according to the criterion value of setting to signal processing apparatus in advance, may bring the judged result same in fact with the circuit off-state.So, on an alternative embodiment of the invention, tackle above-mentioned situation, when the vibration below inertia ball receives setting and it also do not begin to roll, make the bottom contact element press the structure of elastic force to be arranged on its underpart constitutes to the inertia ball effect.Thus, the vibration below inertia ball receives setting and present fine motion or also can keep both to contact when trembleing is up and down done and avoid signal processing apparatus that the mistake changing of the relative positions takes place.

Describe this embodiment with reference to Fig. 3 and Fig. 4.On this diagram, represent the same area of the embodiment that narrated with same numeric character, and omitted its detailed explanation.Seismosensitive element 21 constitutes closed container with metal shell 2 and the plectane 3 that the bottom is housed, and on plectane 3, by insulating packing 4, runs through that hermetically lead-in wire pin 5 being set.

In this closed container, the insulating base 26 so that insulating material such as pottery or plastics constitute by the structure of its peripheral rib 26D that is equipped with, embeds and is fixed on 2 li of housings.This insulating base 26 promptly similarly has collet 26A, dip plane 26B and through hole 26C with the insulating base of narrating in the middle of the embodiment 6, and, in the space between collet 26A and the housing bottom surface, carry and hold portion's contact element 27.In the through hole 26C of the central part of dip plane 26B, it is being run through the terminal bolt 27A that is provided with bottom contact element 27 from bottom to top.

Bottom contact element 27 is to have enough flexible a kind of groups of springs, with thickness slightly the phosphor bronze sheet of 0.05 to 0.2 millimeter degree make, and, as its flat shape, for example, form spiral-shaped as shown in Figure 4.On its end of the central part that is positioned at housing 2 bottom surfaces, be provided with above-mentioned terminal bolt 27A, and it is penetrated in the through hole 26C.And, near the root of this terminal bolt 27A, be provided with the block 27B of degree of growing crosswise than the aperture wide cut of through hole 26C, make it have the effect that the displacement upward to terminal bolt 27A is limited.At least the part surface of its terminal bolt 27A of bottom contact element 27 then preferably uses the alloy processing of noble metal, nickel or lead such as gold and silver and tin to electroplate.

On the spiral other end of bottom contact element 27, make fixed part 27C, and its setting-in is fixed on the socle 26E of the support of holding concurrently of insulating base 26, in addition, on near the fixed part 27C, make contact chip 27D, and make inner edge of its contact housing 2 so that current lead-through.This fixed part 27C to be designed to its aperture slightly littler than socle 26E, and this hole around make a plurality of cracks, as shown in Figure 4, be provided with eight crack 27C1, thereby, socle 26E embedded in this hole just can interfix.Because contact chip 27D clamped between housing 2 inner faces and insulating base 26 outer peripheral faces, so can obtain less contact resistance and stop the rotation of bottom contact element 27 own.

On the 26B of the dip plane of insulating base 26, load the inertia ball 8 of electric conductivity.This inertia ball 8 when normal posture static, is positioned at then that through hole 26C goes up and the terminal bolt 27A of contact bottom contact element 27 and it is pushed down, thereby, till the vibration arrival of the above acceleration of regulation, keep the contact condition of non-rolling.Inertia ball 8 left through hole 26C and goes up and roll on the 26B of dip plane when Seismosensitive element 21 1 was subjected to by the above vibration of regulations such as earthquake, simultaneously the time more than deciding break and the contacting of terminal bolt 27A.At this moment, the degree of moving up of terminal bolt 27A is subjected to the restriction of block 27B, thereby makes inertia ball 8 outwards from the center can obtain to leave state really when mobile at it.

Being positioned on the end in the closed container of lead-in wire pin 5, embodiment is same with narrating, is fixed with the electric conductivity top sub 9 with a plurality of pinniform part of having of formations such as phosphor bronze 9A.This pinniform part 9A has elasticity, and its each front end contacts inertia ball 8 all the time.Fixed part downside at top sub 9 and lead-in wire pin 5 is fixed with fender 10.

Surrounding on the position of top sub 9, be provided with insulating base 26 and slightly have a columnar insulation cover plate 31 with what the insulating material of pottery or plastics etc. constituted equally.The setting of this insulation cover plate 31, actual different with the foregoing description, serve as that axle is embedded into and is fixed in this lead-in wire and sells on 5 with lead-in wire pin 5.At this moment, this embedding processing must be carried out in the past in the top sub 9 and the fixedly processing of fender 10.Moreover this insulation cover plate 31 also is, and is the same with the foregoing description, collaborative with insulating base 26 and catch inertia ball 8 and stop it to contact with the direct of housing 2 when the maximum displacement of inertia ball 8, and make its and housing 2 between keep minim gap.

Describe the course of action of the Seismosensitive element 21 that as above constitutes now, when Seismosensitive element 21 keeps normal posture static, 8 of inertia balls are positioned on the through hole 26C of dip plane 26B, contact end pin 27A and it is pushed down, be not only limited to this moment, top sub 9 is kept contacting of pinniform part 9A and inertia ball 8 all the time, thereby, arrange the state that circuit forms " leading to " through top sub 9, pinniform part 9A, inertia ball 8, terminal bolt 27A, bottom contact element 27, contact chip 27D, housing 2 to one of plectane 3 successively from lead-in wire pin 5.

Seismosensitive element 21 is received the above acceleration of regulation, and inertia ball 8 is just gone up from through hole 26C and rolled on the 26B of dip plane, at this moment, open its with the contacting of terminal bolt 27A, abovely at the appointed time arrange the circuit disconnection with aforesaid one.Thus, check signal with this for the signal processing apparatus that is connected with Seismosensitive element 21,, make these devices carry out appropriate handling such as fire extinguishing automatically if kerosene warming stove or gaseous combustion dress device promptly pass through the action of control device.Thereafter, Seismosensitive element 21 is got back to former static state, and inertia ball 8 just revert on the center through hole 26C of dip plane 26B, at this moment, because top sub 9 contacts inertia ball 8 all the time, so when inertia ball 8 contacts terminal bolt 27A once more, can return to the circuit turn-on state smoothly.In this embodiment, because terminal bolt 27A is lifted in bottom contact element 27A effect, when inertia ball 8 resumes contacts terminal bolt 27A, can give between the two with contact pressure.Thus and the fixed terminal bolt among first embodiment that has narrated compare, during vibration below setting,, also can stop the generation resistance variations, and make signal processing apparatus in order to avoid erroneous judgement is disconnected or misoperation if inertia ball will be done moving slightly or vibration up and down.

At this, we will be replenished above explanation.In the above-described embodiment, each is provided with insulation cover plate and insulating base respectively in closed container.To this, for example as the structure of Seismosensitive element shown in Figure 5 41, become dip plane 46A and body to become the structure the cup that resembles along the insulation wall 46B of housing 2 the insides by the shape of insulating part 46 being made the bottom, making it to become is one insulating matter part.On this embodiment, when inertia ball 8 moved to the maximum displacement state, also insulation wall 46B was between inertia ball 8 and housing 2 the insides, and inertia ball 8 does not contact the housing the inside, and protects special state of insulation.In addition, other structures except insulating part 46 are all followed the same and action of embodiment shown in Figure 1 too as shown in Figure 5, so omit to say.Moreover the formation of bottom contact element 7 also can be substituted into structure shown in Figure 3, and this point also is self-explantory.

Below, describe the Seismosensitive element of additional embodiments with reference to Fig. 6.Wherein, to narrate the same formation among the embodiment and the part of effect, all give same numeric character and omit to say.Fig. 6 (A) be in Fig. 6 (B) along the longitudinal sectional drawing of C-C line, and Fig. 6 (B) is along the transverse cross-sectional view of B-B line in Fig. 6 (A).The Seismosensitive element 51 of this embodiment, then same with embodiment shown in Figure 3, insulating base 26 embeds and is fixed near the bottom of 2 li of housings, and holds bottom contact element 27 in the space of its underpart.

In this embodiment, there is not insulation cover plate.An end that is positioned at closed container of lead-in wire pin 5 is provided with top sub 9 and fender 60.The formation of this fender 60 then shown in Fig. 6 (B), has a plurality of arm handle 60A.Each arm handle 60A can extend in each gap of the pinniform part 9A that lays respectively at top sub to the radiation direction, and can be in the position that does not contact pinniform part 9A.Each front end of arm handle 60A shown in Fig. 6 (A), is bent downwardly.The material of fender 60 in this embodiment, uses conducting metals such as iron, so that be fixed on the lead-in wire pin 5 by methods such as welding.But, also can use the insulating material of plastics or pottery etc. if make it to interfix through suitable methods such as fusing bonding or ca(u)lks.

Then, describe the action of this Seismosensitive element 51.Inertia ball 8 is arranged in insulating base 26 when it is static dip plane 26B in the heart, and, disconnect with regard to rolling during vibration more than being subjected to setting and the contacting of bottom contact element 27, this point then is that to catch up with each embodiment that states the same.At this moment, do not move, follow its rolling so pinniform part 9A can the limit keeps contact inertia ball 8 limits because the arm handle 60A of fender 60 does not hinder the change of top sub pinniform part front end.And, when inertia ball 8 rolls and move to maximum shift position shown in the dotted line 8C, the collaborative inertia ball 8 of catching of the front end of the outer rim 26F of insulating base 26 and arm handle 60A, and make the inertia ball 8 that is displaced to position shown in the dotted line 8C keep slight gap with housing 2 the insides, and make it in order to avoid contact.At this, even fender 60 materials are conduction matter and inequality with the insulcrete of narrating among each embodiment 11 and 31, also its current potential original just with inertia ball 8 same current potentials, do not contact housing 2 so need only fender 60 grades, all are just out of question.Thus, this Seismosensitive element 51 does not send the signal of " leading to " yet when being subjected to excessive vibration, and when control object apparatus tilts or lays across, can reach the state of " breaking " really yet.

Below then the detection oscillator 71 that above-mentioned Seismosensitive element 1 is housed is described with reference to Fig. 7 (A) and Fig. 7 (B).This embodiment is illustrated in the cover box made from plastics and keeps normal posture to hold Seismosensitive element 1 for 72 li.On the metal shell 2 of Seismosensitive element 1, fix the wiring part 73 of conduction matter through welding.With this Seismosensitive element 1 by pack into 72 li in cover box of the opening of cover box bottom, to go between simultaneously pin 5 and wiring part 73 inserts in through hole 72A, the 72B that wears on the cover boxes 72, and form at least three spacing shim 72C to cover box 72 the insides and allow hit above the plectane 3 and connect, reach pack into 72 li in cover box of location thus., on an end of lead-in wire pin 5 on and from cover box above outstanding wiring part 73, terminal to each sheet of 74,75 all welded fixing, and finished in 72 li programs that Seismosensitive element 1 is installed of cover box thereafter.

This detection oscillator 71 is loaded on the method that control object apparatus is used, for example, when on kerosene fan warming stove, installing, the bottom surface 72D that will overlap box 72 earlier is close on the horizonal base plate face of not shown kerosene fan warming stove, tighten fixingly by bracket hole 72E with screw etc., and make Seismosensitive element 1 have normal position.Here it is detects the example that the level of oscillator 71 is installed.But, if be contained in it on the vertical plane of control object apparatus or on the dip plane time, i.e. change design through cover box-like shape just easily can take appropriate measures.In addition, keep the method for the normal position of Seismosensitive element 1 might as well adopt other means.For example, in advance the long boom of " door " word shape or " L " word shape is sold on 5 by being fixedly welded on lead-in wire, thereafter, this bracket arm is fixed in predetermined being close on the face, and make Seismosensitive element 1 have normal position, perhaps, select the silicone oil filling container of proper viscosity, in this container, hang this Seismosensitive element again, itself have the method for keeping posture effect or the like automatically and also can and make.

As above Xu Shu the present invention though be not use mercury, also can realize using the isotropic directivity Seismosensitive element of the small-sized and high-performance and the normally closed contact formula of inertia ball mode.In a word, its structure is that top sub is pushed down inertia ball, and inertia ball can be with the power that the pushes contact bottom contact element greater than himself weight thus, thereby, compare with the present invention's mode in the past, can realize using small-sized inertia ball and stable contact condition.

In addition, employing is in the structure of subsidy contact force with the effect on the part that is in contact with one another of inertia ball of bottom contact element, thus, compare with the mode in the past that this contact portion is fixing, during vibrations below setting, can stop because inertia ball shakes a little or vibration and contingent resistance change and by the disconnected or misoperation of its signal processing apparatus that brings erroneous judgement up and down.

Moreover; the insulating part of the insulating part on top or fender and bottom is collaborative catches inertia ball, thereby can stop inertia ball contact housing the inside, prevents that also Seismosensitive element from sending the signal of " leading to " when excessive vibration; and, when tilting or lay across, do not send Seismosensitive element the signal of " leading to " yet.

Claims (6)

1. Seismosensitive element is characterized in that:

A conductive circular plate forms a closed container with a cylindrical shape conductive shell that the end is housed,

Lead-in wire pin through the almost central part that is located at above-mentioned plectane encapsulates by insulating material with being sealed,

In fact an insulating base that has the dip plane of raising gradually with concentric circles from the outside of mediad almost and central part to be provided with through hole is fixed on the bottom surface of above-mentioned housing,

A conductive lower portion contact element is installed near above-mentioned housing bottom surface or the bottom surface, so that one end and above-mentioned housing current lead-through, and the terminal bolt of the other end that constitutes this bottom contact element is applied in the through hole of above-mentioned insulating base,

A conduction inertia ball is loaded on the dip plane of above-mentioned insulating base, this inertia ball can roll, but in the stationary state of the normal posture of above-mentioned housing, be located at the terminal bolt that contacts above-mentioned bottom contact element on the through hole of central part, be able to mutual energising owing to gravity

A conduction top sub is fixed on the end in the above-mentioned housing of being positioned at of above-mentioned lead-in wire pin; this top sub have with above-mentioned lead-in wire pin be the center, almost on concentric circles, be set up have a plurality of have enough elasticity and the pinniforms that can conduct electricity contact sites partly; the pinniform part of this contact site contacts above-mentioned inertia ball all the time and keeps energising; and; prevent that this top sub fender of disturbing distortion in the wrong is fixed on the fixed part of this top sub and lead-in wire pin

When above-mentioned inertia ball is subjected to vibration more than the setting, this ball just leaves the through hole of above-mentioned insulating base and rolls on above-mentioned dip plane, form its with above-mentioned bottom contact element between the non-conductive state that separates, and when the static state of this inertia ball, since the weight of this ball itself and the elasticity of above-mentioned top sub, and make it be contacted with above-mentioned bottom contact element.

2. Seismosensitive element according to claim 1 is characterized in that:

Above-mentioned bottom contact element has the elasticity that is formed by itself shape, and makes its terminal bolt when above-mentioned inertia ball is positioned on the through hole of above-mentioned insulating base and this ball Elastic Contact.

3. Seismosensitive element according to claim 1 and 2 is characterized in that:

Owing to have above-mentioned dip plane and be fixed on above-mentioned housing inner bottom surface insulating base nearby and have almost cylindrical shape and be fixed on the synergy of an above-mentioned top sub insulation cover plate nearby, even when above-mentioned inertia ball moves to maximum shift position, can directly not contact with above-mentioned housing inner face and conduct electricity yet.

4. Seismosensitive element according to claim 3 is characterized in that:

Above-mentioned insulation cover plate is fixed by embedding in the above-mentioned housing.

5. Seismosensitive element according to claim 3 is characterized in that:

Above-mentioned insulation cover plate is then fixed by embedding on the above-mentioned lead-in wire pin.

6. Seismosensitive element according to claim 1 and 2 is characterized in that:

Even when the synergy of above-mentioned fender and above-mentioned insulating base makes above-mentioned inertia ball move to maximum shift position, can directly not contact with above-mentioned housing inner face and conduct electricity yet.

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