CN201014499Y

CN201014499Y - Piezoelectric ignitor

Info

Publication number: CN201014499Y
Application number: CNU2007200365932U
Authority: CN
Inventors: 刘舜楠
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-03-28
Filing date: 2007-03-28
Publication date: 2008-01-30
Anticipated expiration: 2017-03-28

Abstract

The utility model relates to a piezoelectric ignition device of an ignition appliance, in particular to the piezoelectric ignition device without the lead-out guide wire. The utility model is characterized in that the shape of the cross section of a conductive part is matched with a potential outlet, and furthermore the conductive part has the interference fit with the potential outlet and is inserted and fixed in the potential outlet. The assembly is simple and time-saving after the conductive part is inserted and fixed in the potential outlet directly by the method of interference fit, which can also simplify the processing technology of the conductive part and reduce the cost, therefore the utility model can be assembled by mechanical automation.

Description

Piezoelectric ignition device

Technical field

The utility model relates to a kind of piezoelectric ignition device of the apparatus of lighting a fire, and is meant the piezoelectric ignition device of not drawing lead especially.

Background technology

Piezoelectric igniting mechanism generally is made up of the scalable assembly that the upper and lower parts of relative motion are mutually formed, the piezoelectric ignition device that is commonly called as the Two Piece Set type is exactly wherein a kind of, upper-part and lower member keep a preset distance by return spring usually, piezoelectric ceramics is located in one of them parts of this scalable assembly, when hitting the such piezoelectric elements of this piezoelectric ceramics as tapping the head, will produce electric spark.As applying on December 18th, 2006 being all the applicant, application number is 200620170628.7, name is called disclosed a kind of piezoelectric ignition device in " piezoelectric ignition device ", its structure includes the scalable assembly of relative motion mutually, be provided with return spring between the housing of all right one way or the other telescopic component and keep a preset distance, tap the head and be located at the axial air gap of scalable assembly slidably, piezoelectric elements and tap the head between also have an actual reception to hit from tapping the head the nail hitting of holding, in resting position, tap the head and remain in apart from holding nail hitting certain distance position by maintaining body, tap the head and the housing of telescopic component between be provided with impact spring, to telescopic component pressurization and the approaching end of contraction the time at scalable assembly, the self-sustaining mechanism that taps the head gets loose, and under the impact spring effect of pressurized, will tap the head and drive to holding nail hitting, form impact energy and produce current potential in the piezoelectric elements two ends, the piezoelectric elements that fixedly is located in the telescopic component is a monoblock piezoelectric ceramics, the housing of this telescopic component is provided with the current potential outlet or is provided with the current potential outlet at the impact spring seat place that taps the head holding nail hitting place, and be provided with patchhole at the housing axial end portion of the telescopic component that piezoelectric ceramics is installed, the patchhole place is fixed with the metal current collecting piece and compresses electrical connection with piezoelectric ceramics and cooperates, both sides, current potential outlet place are provided with the electric-conductor holddown groove, electric-conductor is fixed on this electric-conductor holddown groove, and electric-conductor has a projection to be inserted into the current potential outlet.The piezoelectric ignition device of this structure overcome traditional piezoelectric ignition device since be provided with metal cap that conducting strip and lead thereof, piezoelectric element below be provided with generally to be processed in internal thread and the telescopic component on or lower member be threaded, be used to compress two piezoelectric elements and play the end high-voltage that the conduction piezoelectric ceramics produces, the cost and the difficulty of processing of this product have been strengthened, increased production cost, defectives such as structure more complicated, thereby assembly difficulty simultaneously is bigger and time-consuming.But its electric-conductor shape is complicated, makes and install trouble, and the cost height is difficult for realizing the automation assembling, and comes off easily.

The utility model content

The purpose of this utility model is to overcome the deficiency that prior art exists and a kind of its electric-conductor simple shape is provided, and makes and easy for installation, and does not allow caducous piezoelectric ignition device.

To achieve these goals, the piezoelectric ignition device that the utility model provides, still comprise the telescopic component that is provided with the current potential outlet, current potential outlet place is provided with electric-conductor, it is characterized in that: described electric-conductor cross sectional shape and current potential outlet match, and insert solid in the current potential outlet with current potential outlet interference fit.

Further setting of the present utility model on this basis is: corresponding current potential outlet place is provided with convex tendon or boss to add long normal outlet axial dimension on the housing of telescopic component, improves the stable degree that electric-conductor is installed.The concrete shape of current potential outlet can be the little shoulder hole of the big medial extremity of outboard end, and electric-conductor is the multidiameter shape of shape and interference fit identical with the current potential outlet.

The utility model change into electric-conductor is directly inserted in the mode of interference fit solid in the current potential outlet, assemble easy, save time, make also that the electric-conductor processing technology is more simplified, cost reduces, can adopt mechanical automation to assemble.

Description of drawings

Further launch to illustrate the utility model below in conjunction with drawings and Examples.

Fig. 1 the utility model embodiment piezoelectric ignition device structure explosive view;

Structure chart before the assembling of Fig. 2 embodiment piezoelectric ignition device of the present utility model Two Piece Set type;

Fig. 3 the utility model embodiment piezoelectric ignition device Two Piece Set type assembling back structure chart profile;

The housing part sectioned view of Fig. 4 the utility model embodiment piezoelectric ignition device telescopic component;

Fig. 5 the utility model embodiment piezoelectric ignition device telescopic component housing axial end side view;

Fig. 6 the utility model embodiment piezoelectric ignition device metal current collecting piece three-dimensional side view;

Fig. 7 the utility model embodiment piezoelectric ignition device is used schematic diagram on lighter;

The schematic diagram that Fig. 8 the utility model embodiment piezoelectric ignition device is used on another lighter.

The specific embodiment

As shown in the figure, the utility model embodiment is primarily aimed at Two Piece Set type piezoelectric ignition device and launches explanation, and the utility model is not confined to Two Piece Set type piezoelectric ignition device package assembly certainly, and for example the piezoelectric ignition device of three-piece syndeton also can.Present embodiment includes the scalable assembly 1 of relative motion mutually, 2, the housing 11 of all right one way or the other telescopic component, be provided with return spring 8 between 21 and make

housing

11,21 keep a preset distance, tap the head and 4 be located at scalable assembly 1 slidably, 2 axial air gap, one monoblock piezoelectric ceramics 6 and tap the head between 4 also have an actual reception from tap the head 4 hit hold nail hitting 7, one monoblock piezoelectric ceramics 6 fixedly is located at scalable assembly 1, in one of them telescopic component 1 of 2, wherein a monoblock piezoelectric ceramics 6 is especially with respect to being provided with the conducting strip situation between two piezoelectric ceramics, that is to say for example to establish by short of folder the piezoelectric ceramics 6 of conducting strip can be referred to as a monoblock piezoelectric ceramics 6.Band supports tapping the head 4 of transverse axis 41 and is located on another telescopic component 2; 4 the support transverse axis 41 of tapping the head places the shape chamber 211 of telescopic component housing 21 band inclined thrust surfaces; 4 its support transverse axis 41 of tapping the head after this telescopic component 2 is inserted in the telescopic component 1 place the corner shape retainer shape chamber 114 of the housing 11 of telescopic component 1 simultaneously; the maintaining body of tapping the head of present embodiment is made of these corner shape retainer shape chamber 114 grades exactly; in fact; its corner shape retainer shape chamber 114 of maintaining body of tapping the head that is made of corner shape retainer shape chamber 114 also can be directly arranged on the housing 21 of telescopic component; at this moment; the promotion inclined thrust surface that 4 support transverse axis 41 gets loose from maintaining body of tapping the head then is located on another telescopic component 1, or the like these different maintaining body settings of tapping the head usually also all are the utility model scopes and no longer launch explanation.Fixedly preferably be provided with slopes 115 that the support transverse axis of conveniently tapping the head inserts on its flexible end interface inwalls of the scalable assembly housing 11 of piezoelectric ceramics 6, have such mounting process groove to help piezoelectric ignition device not split and make things convenient for both to peg graft at 1,2 o'clock at the assembling telescopic component.

In resting position, tap the head and 4 remain in apart from holding nail hitting 7 certain distance positions by maintaining body, tap the head 4 and the housing 21 of telescopic component between be provided with impact spring 3, to

telescopic component

1,2 the pressurization and at

scalable assembly

1,2 contraction is when finishing, tap the head 4 under the effect of the shape chamber 211 of inclined thrust surface self-sustaining mechanism get loose, also promptly tap the head 4 from chamber 114 landings of corner shape retainer shape, and under impact spring 3 effect of pressurized, will tap the head and 4 drive to holding nail hitting 7, form impact energy and produce current potential in piezoelectric ceramics 6 two ends, the housing 11 of telescopic component is provided with current potential outlet 113 holding nail hitting 7 places, or being provided with current potential outlet 117 at 43 places of impact spring of tapping the head, Fig. 3 also provides this variation together.Housing 11 axial end portions at telescopic component are provided with patchhole, the patchhole place is fixed with metal current collecting piece 5 and compresses electrical connection with piezoelectric ceramics 6 and cooperates, piezoelectric ceramics 6 two ends produce current potential respectively from metal current collecting piece 5 with draw holding the current potential outlet 117 that current potential outlet 113 that nail hitting 7 is provided with or 3 places of impact spring are provided with, current potential outlet 113,117 places are provided with electric-conductor 9.

Electric-conductor 9 cross sectional shapes and current potential outlet 113 match, and with current potential outlet 113 interference fit electric-conductor 9 are directly inserted admittedly in the current potential outlet, are suitable for adopting the mechanical automation assembling.

In order further to improve the stable degree that electric-conductor 9 is installed, simultaneously corresponding current potential outlet 113 places are provided with convex tendon 112 or boss to add long normal outlet axial dimension on the housing as telescopic component, constitute the conduction springboard briquetting 104 of giving vent to anger simultaneously, the top correspondence of convex tendon 112 or boss is the face of cylinder or sphere, complete machine when assembling convenient with the cooperating of lighter miscellaneous part.Current potential outlet 113 concrete shapes are the little shoulder hole of the big medial extremity of outboard end preferably, and to be shape identical with current potential outlet 113 and the multidiameter shape of interference fit for electric-conductor 9, and such electric-conductor 9 processing technologys are more simplified, cost reduces.

If current potential outlet 113 is located at and holds nail hitting 7 corresponding positions, electric-conductor 9 be inserted in the current potential outlet 113 an end preferably with return spring 8 close neighbours that hold above the nail hitting 7, such electric-conductor 9 also can be installed when the assembling lighter again and also can.Be located at and impact spring 3 corresponding positions for current potential outlet 113, same electric-conductor 9 is inserted into best and impact spring 3 close neighbours of an end in the current potential outlet 113.

The further setting that metal current collecting piece 5 is fixed on the housing 11 axial end portion patchholes of telescopic component is, metal current collecting piece 5 its sides that housing 11 axial end portions of telescopic component are provided with are provided with lug 51, this lug 51 is provided with slope 511 in direction of insertion, the telescopic component housing 11 axial end portion patchhole inwall places of this lug 51 are provided with the lug shrinkage pool relatively, when metal current collecting piece 5 inserts at lug 51 places and telescopic component housing 11 axial end portions insertion aperture chamfered transition is interference fit, and its lug 51 of back, metal current collecting piece 5 insertion location oppositely stops with the lug shrinkage pool that telescopic component housing axial end portion patchhole inwall place is provided with and cooperates.Wherein, the telescopic component housing 11 axial end portion patchhole cross sections that cooperate with metal current collecting piece 5 preferably are the plum blossom shape, the plum blossom lobe die cavity 116 corresponding telescopic component housings 11 wall thickness places that it is outstanding, and it is good that metal current collecting piece 5 monoblocks are cylindrical shape.

As shown in Figure 7, provided a kind of example that the utility model embodiment piezoelectric ignition device is used on lighter 10, the metal current collecting piece 5 of piezoelectric ignition device places button 101 belows of lighter 10 to be connected with spark pin 102 contacts, the metallic conduction spare of piezoelectric ignition device 9 is connected with conduction springboard 103 contacts of giving vent to anger of lighter 10, piezoelectric ceramics 6 two ends produce current potential just is transmitted to fuel by the conduction springboard 103 of giving vent to anger of spark pin 102 and lighter 10 nozzle, so just, formed circuit, near and the gap that formation is opened the nozzle of fuel, above-mentioned current potential forms spark by this gap, lights the fuel that disengages and forms flame.

As shown in Figure 8, provided the another kind of example that the utility model embodiment piezoelectric ignition device is used on lighter 10, the metal current collecting piece 5 of piezoelectric ignition device equally also is to place button 101 belows of lighter 10 to be connected with conduction springboard briquetting 104 contacts of giving vent to anger, the conduction of giving vent to anger springboard briquetting 104 acts on the conduction springboard 103 of giving vent to anger, the current potential outlet 117 that 3 places of impact spring are provided with is provided with electric-conductor 9, and this electric-conductor 9 has a projection 91 to be inserted into current potential outlet 117 and impact spring 3 close neighbours.Contiguous place is provided with lead 105 at cigarette lighter nozzle, electric-conductor 9 is electrically connected with lead 105, piezoelectric ceramics 6 two ends produce current potential just is transmitted to fuel by the conduction springboard 103 of giving vent to anger of lead 105 and lighter 10 nozzle, so just, formed circuit, near and the gap that formation is opened the nozzle of fuel, above-mentioned current potential forms spark by this gap, lights the fuel that disengages and forms flame.Certainly, 3 of the impact springs of piezoelectric ignition device are placed button 101 belows of lighter 10 and metal current collecting piece 5 is inverted also passable, as long as with they with the conduction springboard 103 of giving vent to anger, give vent to anger and conduct electricity springboard briquetting 104 etc. and be connected and do corresponding adjustment and just can.

Claims

1. piezoelectric ignition device, be included in the telescopic component that holds the current potential outlet that nail hitting place or impact spring seat place be provided with, current potential outlet place is provided with electric-conductor, it is characterized in that: described electric-conductor cross sectional shape and current potential outlet match, and insert solid in the current potential outlet with current potential outlet interference fit.

2. piezoelectric ignition device according to claim 1 is characterized in that: corresponding current potential outlet place is provided with convex tendon or boss on the housing of described telescopic component.

3. piezoelectric ignition device according to claim 2 is characterized in that: described current potential outlet is the little shoulder hole of the big medial extremity of outboard end, and described electric-conductor is the multidiameter shape of shape and interference fit identical with the current potential outlet.