Three-dimensional arch-shaped ignition resistor element

Abstract

The utility model provides a three-dimensional arch-shaped ignition resistor element, which comprises a substrate, an alloy layer, a to-be-burnt object accommodating part and a side guide layer, the alloy layer is arranged on a first surface of the substrate, the alloy layer comprises an arch-shaped lead, a first connecting part and a second connecting part, the to-be-burnt object accommodating part is limited between the arch-shaped lead and the substrate, and the side guide layer is arranged on a second surface of the substrate. The arc-shaped lead defines the volume of a to-be-burnt object in the to-be-burnt object containing part, the side guide layer is arranged on the alloy layer and abuts against the side surface of the base plate, and the three-dimensional arc-shaped ignition resistor element is configured to reduce the ignition distance and / or increase the contact area with the to-be-burnt object and / or increase the contact area with the to-be-burnt object.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of ignition resistance elements, in particular to a three-dimensional arch type ignition resistance element. BACKGROUND

[0002] The ignition resistance element converts electric energy into heat energy through Joule effect when current passes, and conducts the heat energy to the fuel to be ignited through heat conduction, so that the temperature reaches the ignition point for combustion. Alternatively, the bridge wire generates sparks by melting and heating, igniting the surrounding fuel to be ignited.

[0003] However, the contact area between the bridge wire of the traditional bridge wire ignition resistance and the fuel to be ignited is small, which requires a long ignition reaction time and a high ignition voltage, and the range of heat conduction is limited, resulting in uneven heating of the fuel to be ignited, only the part close to the bridge wire has a particularly high temperature, and it is difficult to quickly ignite all the fuel to be ignited. In addition, the bridge wire of the traditional ignition resistance is prone to improper welding, causing virtual welding and normal ignition failure, and the bridge wire of the ignition part of the traditional bridge wire ignition resistance is very thin, which may cause bridge wire fracture during loading or transportation, resulting in ignition failure. Therefore, it is difficult to ensure the stability and ignition accuracy of the traditional ignition resistance element. SUMMARY

[0004] Therefore, the utility model provides a three-dimensional arch type ignition resistance element, which comprises:

[0005] a substrate;

[0006] an alloy layer disposed on a first surface of the substrate, the alloy layer comprising an arch-shaped lead wire, a first connecting portion and a second connecting portion, the arch-shaped lead wire being located between the first connecting portion and the second connecting portion;

[0007] a fuel container portion located between the arch-shaped lead wire and the substrate, the arch-shaped lead wire defining a volume of the fuel to be ignited in the fuel container portion; and

[0008] a side guide layer disposed on the alloy layer and abutting against a side surface of the substrate;

[0009] The three-dimensional arch type ignition resistance element is configured to reduce the ignition distance and / or increase the contact area with the fuel to be ignited.

[0010] Preferably, the eccentricity of the arch-shaped lead wire is ε and 0<ε<1.

[0011] Preferably, the three-dimensional arch type ignition resistance element further comprises a back electrode layer disposed on a second surface of the substrate, and the side guide layer abuts against the alloy layer, the substrate and the back electrode layer.

[0012] Preferably, a length of the arch-shaped lead is greater than a distance between the first connecting portion and the second connecting portion, and the arch-shaped lead is configured to reduce an ignition reaction time.

[0013] Preferably, a wire diameter of the arch-shaped lead is 50-250 μm.

[0014] Further, the utility model also provides a kind of manufacturing method of three-dimensional arch-shaped ignition resistance element, it includes:

[0015] Setting an alloy layer on a first surface of a substrate, etching the alloy layer to form an arch-shaped lead, a first connecting portion and a second connecting portion, the arch-shaped lead is between the first connecting portion and the second connecting portion, the arch-shaped lead and the substrate define a volume of an unburnt material in an unburnt material containing portion;And

[0016] Setting a side conducting layer on the alloy layer, the side conducting layer abuts a side surface of the substrate;

[0017] Wherein the three-dimensional arch-shaped ignition resistance element is configured to reduce ignition distance and / or improve contact area with the unburnt material.

[0018] Preferably, an eccentricity of the arch-shaped lead is ε and 0<ε<1.

[0019] Preferably, the manufacturing method further includes: setting a back electrode layer on a second surface of the substrate, and the side conducting layer abuts the alloy layer, the substrate and the back electrode layer.

[0020] Preferably, a length of the arch-shaped lead is greater than a distance between the first connecting portion and the second connecting portion, and the arch-shaped lead is configured to reduce an ignition reaction time.

[0021] Preferably, a wire diameter of the arch-shaped lead is 50-250 μm.

[0022] The three-dimensional arch-shaped ignition resistance element of the utility model defines unburnt material containing area through arch-shaped lead, so that unburnt material covers the whole arch-shaped lead, not only increases the contact surface of three-dimensional arch-shaped ignition resistance element and unburnt material, but also increases the volume of unburnt material contained by three-dimensional arch-shaped ignition resistance element. Therefore, three-dimensional arch-shaped ignition resistance element can make unburnt material evenly heated when energized, reduces ignition reaction time and ignition distance, improves unburnt material contact area, use safety voltage, stability, ignition accuracy and transportation safety of three-dimensional arch-shaped ignition resistance element. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the flow chart of the manufacturing method of three-dimensional arch-shaped ignition resistance element of the utility model.

[0024] Figure 2is a sectional view of the three-dimensional arched ignition resistance element of the utility model.

[0025] Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 is the schematic diagram of the manufacturing method of the three-dimensional arched ignition resistance element of the utility model.

[0026] Figure 9 is the plan view of the first embodiment of the three-dimensional arched ignition resistance element of the utility model.

[0027] Figure 10 is the plan view of the second embodiment of the three-dimensional arched ignition resistance element of the utility model.

[0028] Reference numerals

[0029] 1~3: three-dimensional arched ignition resistance element

[0030] 10: base plate

[0031] 20: adhesive layer

[0032] 30: alloy layer

[0033] 31: arched lead wire

[0034] 32: first connecting part

[0035] 33: second connecting part

[0036] 40: back electrode layer

[0037] 41: first back electrode

[0038] 42: second back electrode

[0039] 50: combustible material containing part

[0040] 60: side conducting layer

[0041] 61: first side conductor

[0042] 62: second side conductor

[0043] 70: outer electrode layer

[0044] 71: first outer electrode

[0045] 72: second outer electrode

[0046] 80: colloid

[0047] 90: combustible material

[0048] D1: upper arched distance

[0049] DR1: first direction

[0050] DR2: second direction

[0051] θ: upper arch angle

[0052] S01-S06: steps DETAILED DESCRIPTION

[0053] The embodiments of the present application will be described in detail below with reference to the drawings, which are intended to illustrate, not to limit, the present application. In addition to these detailed descriptions, the present application can be widely applied to other embodiments, any easy replacement, modification, equivalent change of the embodiments should be understood to be included in the scope of the present application, and the patent scope should be defined by the claims. It should be noted that the drawings are only schematic and not to scale, and some details may not be fully drawn to ensure the simplicity of the drawings.

[0054] For the sake of simplicity, a rectangular solid arch-shaped ignition resistance element is taken as an example, but it should be understood that it is taken as an example and not to limit the present application, and the solid arch-shaped ignition resistance element of the present application can be implemented in any shape.

[0055] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 1 is a flow chart of the manufacturing method of the solid arch-shaped ignition resistance element of the present application, Figure 2 is a sectional view of the solid arch-shaped ignition resistance element of the present application, Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 is a schematic diagram of the manufacturing method of the solid arch-shaped ignition resistance element of the present application, Figure 9 is a top view of the first embodiment of the solid arch-shaped ignition resistance element of the present application, Figure 10 is a top view of the second embodiment of the solid arch-shaped ignition resistance element of the present application.

[0056] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 ,Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 , Figure 1 is a flow chart of the manufacturing method of the arched ignition resistance element of the utility model, Figure 2 is a sectional view of the three-dimensional arched ignition resistance element of the utility model, Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 is a schematic diagram of the manufacturing method of the arched ignition resistance element of the utility model, Figure 9 is a top view of the first embodiment of the three-dimensional arched ignition resistance element of the utility model, Figure 10 is a top view of the second embodiment of the three-dimensional arched ignition resistance element of the utility model.

[0057] The arched ignition resistance element 1~3 of the utility model is provided with a substrate 10, an adhesive layer 20, an alloy layer 30, a back electrode layer 40, a side guide layer 60 and an outer electrode layer 70.

[0058] The manufacturing method of the arched ignition resistance element 1~3 of the utility model is as follows:

[0059] Step S01: printing a colloid 80 on the first surface of the substrate 10, and sputtering to form a back electrode layer 40 on the second surface of the substrate 10, the back electrode layer 40 can be formed by sputtering, electroplating or printing. The colloid 80 and the back electrode layer 40 are both strip-shaped structures parallel to each other, and the back electrode layer 40 is further provided with a first back electrode 41 and a second back electrode 42.

[0060] The material of the substrate 10 is FR4 glass fiber substrate or ceramic substrate. The material of the colloid 80 is polymer, for example: acrylic polymer. The material of the back electrode layer 40 is metal, for example: copper, silver.

[0061] Step S02: coating the adhesive layer 20 on the colloid 80, and adhering the alloy layer 30 on the adhesive layer 20, etching the alloy layer 30 according to the required target resistance value to form an arched lead 31, a first connecting part 32 and a second connecting part 33, the arched lead 31 is located between the first connecting part 32 and the second connecting part 33, the first connecting part 32 is arranged relative to the first back electrode 41, and the second connecting part 33 is arranged relative to the second back electrode 42.

[0062] The upper arch of the arch-shaped lead 31 has an angle θ of 0°<θ<90°. For every 1° increase in the angle θ, the ignition distance is increased by 2-5%, preferably 3.3%, the contact area between the arch-shaped lead 31 and the combustible material 90 is increased by 1-5%, preferably 1.5-2%, and the ignition reaction time is reduced by 1-5%. The semi-major axis of the arch-shaped lead 31 (i.e., half the length between the first connecting portion 32 and the second connecting portion 33) is greater than the semi-minor axis (i.e., the upper arch distance D1), so that the eccentricity of the arch-shaped lead 31 is ε and 0<ε<1. The length of the arch-shaped lead is greater than the spacing distance between the first connecting portion 32 and the second connecting portion 33. The upper arch distance D1 of the arch-shaped lead 31 is 0.2-1.1 mm, preferably 0.4-1.08 mm. The upper arch distance D1 of the arch-shaped lead 31 reduces the ignition distance from the surrounding combustible material 90. The wire diameter of the arch-shaped lead 31 is 50-250 μm, thereby increasing the contact area between the arch-shaped lead 31 and the combustible material 90, improving the safety voltage for use, and improving the transportation safety of the three-dimensional arch-shaped ignition resistor element 1-3.

[0063] The combustible material 90 is gunpowder, such as ZPP, PETN, and KDNBF.

[0064] As shown in FIGS. 1-3, the arch-shaped lead 31 can be a bridge-shaped lead or an S-shaped lead. Figure 9 Figure 10 As shown in FIGS. 1-3, the arch-shaped lead 31 can be a bridge-shaped lead or an S-shaped lead.

[0065] The material of the adhesive layer 20 is a polymer, such as an epoxy-based adhesive. The material of the alloy layer 30 is nickel-chromium alloy (NiCr).

[0066] Step S03: cutting the substrate 10 into a strip-shaped structure having a plurality of three-dimensional arch-shaped ignition resistor elements along the first direction DR1.

[0067] Step S04: after the first shield is attached to the arch-shaped lead 31 and exposed to light and developed, the side conductor layer 60 is sputtered on the alloy layer 30, and after the shield is removed, the first side conductor 61 and the second side conductor 62 are formed. The first side conductor 61 is arranged opposite the first connecting portion 32, and the first side conductor 61 abuts the side surfaces of the first connecting portion 32, the adhesive layer 20, the substrate 10, and the first back electrode 41. The second side conductor 62 is arranged opposite the second connecting portion 33, and the second side conductor 62 abuts the side surfaces of the second connecting portion 33, the adhesive layer 20, the substrate 10, and the second back electrode 42. The material of the side conductor layer 60 is nickel-chromium alloy (NiCr), copper (Cu), or nickel (Ni). The side conductor layer 60 helps to uniformly distribute the current, avoiding local overheating or excessive stress, thereby improving the reliability of the resistor

[0068] ​Step S05: after the second shield is attached on the arched lead 31 and exposure and development are performed, the substrate 10 is cut along the second direction DR2 to cut the substrate 10 into single three-dimensional arched ignition resistor elements. The first shield and the second shield can be the same or different shields.

[0069] Step S06: after the side conductor layer and the back electrode layer 40 are electroplated with the outer electrode layer 70, the second shield is removed to form the first outer electrode 71 and the second outer electrode 72, and the gel 80 is removed to form the fuel containing part 50 utility model. The first outer electrode 71 abuts against the first side conductor 61 and the first back electrode 41, and the second outer electrode 72 abuts against and covers the second side conductor 62 and the second back electrode 42, shortens the conductive path, reduces inductance, crosstalk and noise generation, and protects each element layer from sulfur gas and water vapor invasion. The material of the outer electrode layer 70 is a nickel-tin composite metal layer.

[0070] The printing, coating, sputtering, exposure, development and electroplating processes used in the utility model can be performed by using existing technologies to achieve the same effect. In order to make the description brief, the utility model does not describe in detail.

[0071] The three-dimensional arched ignition resistor element defines a fuel containing area by the arched lead, so that the fuel covers the entire arched lead, not only increases the contact surface of the three-dimensional arched ignition resistor element and the fuel, but also increases the volume of the fuel contained by the three-dimensional arched ignition resistor element. Therefore, the three-dimensional arched ignition resistor element can uniformly heat the fuel when energized, reduce the ignition reaction time and ignition distance, and improve the fuel contact area, safe operating voltage, stability, ignition accuracy and transportation safety of the three-dimensional arched ignition resistor element.

Claims

1. A three-dimensional arched ignition resistor element, characterized in that, It includes: substrate; An alloy layer is disposed on the first surface of the substrate. The alloy layer includes an arched lead, a first connection portion and a second connection portion, with the arched lead located between the first connection portion and the second connection portion. A combustible material receiving portion is located between the arched lead and the substrate, the arched lead defining the volume of the combustible material in the combustible material receiving portion; and A side guide layer is disposed on the alloy layer and abuts against the side surface of the substrate; The three-dimensional arched ignition resistor element is configured to reduce the ignition distance and / or increase the contact area with the material to be burned.

2. The three-dimensional arched ignition resistor element according to claim 1, characterized in that, The eccentricity of the arched lead wire is ε and 0 < ε < 1.

3. The three-dimensional arched ignition resistor element according to claim 1, characterized in that, It also includes: a back electrode layer disposed on the second surface of the substrate, and the side conductor layer abutting the alloy layer, the substrate and the back electrode layer.

4. The three-dimensional arched ignition resistor element according to claim 1, characterized in that, The length of the arched lead is greater than the distance between the first connection and the second connection, and the arched lead is configured to reduce the ignition reaction time.

5. The three-dimensional arched ignition resistor element according to claim 1, characterized in that, The diameter of the arched lead wire is 50–250 μm.

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