A kind of connection sheet of gasbag coilTechnical field
The present invention relates to air bag coil part field, more specifically, it relates to a kind of connection of gasbag coilPiece.
Background technology
Multiple connection sheets are provided with air bag coil, air bag coil is connected with the equipment in automobile by connection sheet is in"on" position.Existing connection sheet, generally electric wire and contact pin are all fixed on plastic plug, contact pin is by brass or red copper materialMaterial is made.By the equipment of the winding displacement of air bag coil and automotive interior it is in "on" position by contact pin.Plastic plug has intolerant to heightIt is the shortcomings that warm, yielding after heated, the loose contact of contact pin is caused, causes the loose contact of whole air bag coil, influences its workMake quality.And the contact pin made of brass or red copper material, electric conductivity be not it is fine, it is yielding, without high temperature resistantThe characteristics of, all affect the product quality of connection sheet.
The content of the invention
In view of the deficienciess of the prior art, it is an object of the invention to provide a kind of high temperature resistant, anti-deformation, electric conductivityMore preferably, volume is smaller, rapid heat dissipation, a kind of connection sheet of the longer gasbag coil of service life.
To achieve the above object, the invention provides following technical scheme：
A kind of connection sheet of gasbag coil, including wiring board, the wiring board include layers of kraft paper, heat curing-type glue-line and ringOxygen tree lipid layer, the epoxy resin layer are weld layer, and the layers of kraft paper is fixed with epoxy resin layer by heat curing-type glue-line to be connectedConnect, the ox-hide layer is provided with heat sink with respect to the other end of hot-setting adhesive layer, is fixed and connected by spot welding on the epoxy resin layerElectric wire is connected to, more than one fixing groove is additionally provided with the epoxy resin layer, contact pin, the contact pin are fixed with the fixing grooveIt is made up of metal material, the contact pin includes fixing end and plug end, and the fixing end includes retainer ring and ring is located at retainer ringOn fixed strip, the fixed strip more than one, be in gap setting between adjacent fixed strip, one end of fixed strip is connected to fixationOn ring, the other end is connected in plug end, and retainer ring can be made into fixed strip outward bending, shape towards plug end motion by extrudingInto discoid chuck, the chuck is adapted with fixing groove size, and chuck is fixed in fixing groove by spot welding.
The present invention is further arranged to：The both ends of the heat sink are provided with contiguous block, and the contiguous block is connected with heat sinkGroove is formed, the wiring board is embedded in groove, and is fitted with heat sink.
The present invention is further arranged to：The rectangular setting in the cross section at contact pin end on the contact pin, the point at the contact pin endEnd is arranged with arc surface.
The present invention is further arranged to：One layer of tin or nickel or silver or gold are coated with the contact pin surface.
By using above-mentioned technical proposal, contact pin is fixed on wiring board, worked in the event of high temperatures, wiring boardIt will not deform, cause the situation of contact pin loose contact to occur；After the structure of wiring board is improved, material is saved, is more conducively dissipatedHeat；Contact pin is made up of ag material, conducts electricity very well, and has been not susceptible to deform；After the fixed form of contact pin is changed so that insertThe fastness that pin is fixed in the circuit board is more preferable.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is contact pin state structural representation；
Fig. 3 is enlarged drawing at a in Fig. 1.
1st, wiring board；10th, layers of kraft paper；11st, heat curing-type glue-line；12nd, epoxy resin layer；13rd, heat sink；14th, fixing groove；2nd, electric wire；3rd, contact pin；30th, plug end；300th, arc surface；31st, fixing end；310th, retainer ring；311st, fixed strip；312nd, chuck；4th, contiguous block；40th, groove.
Embodiment
A kind of connection sheet embodiment of gasbag coil of the present invention is described further referring to figs. 1 to Fig. 3.
A kind of connection sheet of gasbag coil, including wiring board 1, the wiring board 1 include layers of kraft paper 10, heat curing-typeGlue-line 11 and epoxy resin layer 12, the epoxy resin layer 12 are weld layer, and the layers of kraft paper 10 is logical with epoxy resin layer 12Cross heat curing-type glue-line 11 to be fixedly connected, the ox-hide layer is provided with heat sink 13, the epoxy with respect to the other end of hot-setting adhesive layerLive wire 2 is fixedly connected with by spot welding on resin bed 12, more than one fixing groove 14, institute are additionally provided with the epoxy resin layer 12State and contact pin 3 is fixed with fixing groove 14, the contact pin 3 is made up of metal material, and the contact pin 3 includes fixing end 31 and plug end30, the fixing end 31 is located at the fixed strip 311 in retainer ring 310 including retainer ring 310 and ring, and the fixed strip 311 is more thanOne, be in gap setting between adjacent fixed strip 311, and one end of fixed strip 311 is connected in retainer ring 310, other end connectionIn in plug end 30, retainer ring 310 can be made towards the motion of plug end 30 by the outward bending of fixed strip 311 by extruding, form circleThe chuck 312 of plate-like, the chuck 312 are adapted with the size of fixing groove 14, and chuck 312 is fixed on into fixing groove 14 by spot weldingIt is interior.The both ends of the heat sink 13 are provided with contiguous block 4, and the contiguous block 4 is connected to form groove 40 with heat sink 13, the circuitPlate 1 is embedded in groove 40, and is fitted with heat sink 13.The rectangular setting in cross section at the end of contact pin 3, institute on the contact pin 3The tip portion for stating the end of contact pin 3 is provided with arc surface 300.One layer of tin or nickel or silver or gold are coated with the surface of contact pin 3.
The setting of layers of kraft paper 10 on wiring board 1, reduces the use of epoxy resin layer 12 in the prior art so that epoxyResin bed 12 needs of the prior art 1/3rd component, and the cost price of layers of kraft paper 10 is far below epoxy resin layer12 cost, cost-effective effect is reached.The setting of heat sink 13 simultaneously, plays a part of radiating so that wiring board 1 existsCan normal work under hot environment.Heat sink 13 forms the groove 40 being embedded for wiring board 1 with contiguous block 4, and wiring board 1 is embeddedIn groove 40, protection circuit plate 1 can be played a part of.
Assist side 1 is provided with fixing groove 14, and contact pin 3 is fixed in fixing groove 14 by spot welding.It is provided with contact pin 3 solidFixed end 31, before spot welding, the retainer ring 310 in fixing end 31 is extruded towards plug end 30, when being pressed to retainer ring 310,Fixed strip 311 can outwards be bent, and formed discoid chuck 312, reduced the distance of retainer ring 310 and plug end 30,Then chuck 312 is arranged in fixing groove 14, fixed by spot welding.Such mode, the regulation effect of contact pin 3 can make it thatMore preferably, and before unassembled, chuck 312 would not formed to the pressure of retainer ring 310, reduce the space that contact pin 3 takes,It is readily transported.
And be coated with the surface of contact pin 3 or nickel or silver or gold, electric conductivity can be greatly promoted, is unlikely to deform, resistance to heightTemperature, rapid heat dissipation.After being used cooperatively with wiring board 1, it is installed in automobile so that the contact of circuit is better, and high temperature resistant will notDeformed damaged, work quality are more preferable.
Described above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned implementationExample, all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for the artThose of ordinary skill for, some improvements and modifications without departing from the principles of the present invention, these improvements and modificationsIt should be regarded as protection scope of the present invention.