CN216308786U - Ignition component of electronic detonator - Google Patents

Abstract

The utility model provides an electronic detonator ignition component which comprises a first terminal pin, a second terminal pin and a packaging plastic body, wherein the first terminal pin and the second terminal pin respectively comprise a copper base layer and an electroplated layer, a bridge wire is pressed between the end parts of the first terminal pin and the second terminal pin, and the pressed parts of the bridge wire and the first terminal pin and the second terminal pin are welded in the copper base layers of the first terminal pin and the second terminal pin through laser welding or energy storage welding. The bridge wire is firstly pressed between the end parts of the first terminal pin and the second terminal pin, and then the pressed joint parts of the bridge wire and the first terminal pin and the second terminal pin are processed in a laser welding or energy storage welding mode, so that the bridge wire is welded in the copper base layers of the first terminal pin and the second terminal pin, the connection strength of the bridge wire and the first terminal pin and the second terminal pin is improved, the phenomenon that the connection strength of the pressed joint parts is influenced by a subsequent production process to change the resistance value of the bridge wire is avoided, the resistance value of the bridge wire is closer to a true value, the product quality is improved, and the normal work of the electronic detonator is guaranteed.

Description

Ignition component of electronic detonator

Technical Field

The utility model relates to a bridge wire compression joint and welding technology, in particular to an electronic detonator ignition component.

Background

The electronic detonator is an electronic product which controls the detonation process by adopting an electronic control module, and an ignition component welds a bridge wire on two terminal pins, and the bridge wire is heated after the ignition component is electrified so as to achieve the purpose of detonating the detonator, and the electronic detonator is often applied to the electronic detonator. The ignition component mainly comprises a terminal and a supporting piece, and the terminal is fixed on the supporting piece, so that the ignition component is connected to a circuit board of the electronic detonator, and the bridge wire is communicated with the circuit.

In the conventional ignition component, a bridge wire is generally connected and fixed on two terminal pins in a tin soldering mode, because the terminal pins are generally provided with a plating layer, the bridge wire is actually soldered on the plating layer, the fixing effect of the bridge wire is not ideal enough, the resistance value of the bridge wire can change in the subsequent process, the distance from the real resistance value is large, and the normal use of the electronic detonator is influenced.

Disclosure of Invention

The utility model aims to solve the problem of providing an electronic detonator ignition component, which improves the connection strength of a bridge wire, reduces the influence on the resistance value of the bridge wire and improves the product quality.

The utility model provides an electronic detonator ignition component which solves the technical problems and comprises a first terminal pin, a second terminal pin and an encapsulation plastic body, wherein the encapsulation plastic body is injected on the first terminal pin and the second terminal pin, the first terminal pin and the second terminal pin respectively comprise a copper base layer and an electroplated layer arranged on the surface of the copper base layer, a bridge wire is pressed between the end parts of the first terminal pin and the second terminal pin, and the pressed parts of the bridge wire and the first terminal pin and the second terminal pin are welded in the copper base layers of the first terminal pin and the second terminal pin through laser welding or energy storage welding.

Preferably, the copper base layer is brass or tinplate, the electroplated layer comprises a first plated layer and a second plated layer, the first plated layer and the second plated layer are sequentially arranged from inside to outside, and the first plated layer and the second plated layer are respectively a nickel plated layer and a tin plated layer.

Preferably, the bridgewire is shaped like a "V" expanding outwards or inwards.

Preferably, one side of first terminal foot and second terminal foot all inclines to be provided with first spacer and second spacer, and the opposite and its top extension line of the slope direction of first spacer and second spacer intersect, and the encapsulation plastic body is moulded plastics on first spacer and second spacer.

Preferably, the first positioning piece and the second positioning piece are arranged along the length direction of the first terminal pin and the second terminal pin.

Preferably, first spacer and second spacer all set up in the medial surface of first terminal foot and second terminal foot, and the lateral surface of first spacer and second spacer all is provided with the constant head tank.

Preferably, the heights of the first positioning sheet and the second positioning sheet are a and b, and a is more than b.

Preferably, the bridge wire is a nichrome wire, and the packaging plastic body is LCP plastic.

Preferably, both ends of the bridge wire respectively exceed the outer side end faces of the first terminal pin and the second terminal pin.

Preferably, the outer side surfaces of the first terminal pin and the second terminal pin are provided with a plurality of notches.

The utility model has the beneficial effects that: the utility model provides an electronic detonator ignition component which is provided with a unique assembly structure, wherein a bridge wire is firstly pressed between the end parts of a first terminal pin and a second terminal pin, and then the pressed parts of the bridge wire and the first terminal pin and the second terminal pin are processed in a laser welding or energy storage welding mode, so that the bridge wire is welded in copper base layers of the first terminal pin and the second terminal pin. Because the bridgewire is welded in the copper base layer and is not blocked by an electroplated layer, the connection strength of the bridgewire and the first terminal pin and the second terminal pin can be improved, the influence on the resistance value of the bridgewire is reduced, the resistance value of the bridgewire is closer to the true value, the product quality is improved, and the normal work of the electronic detonator is ensured.

Drawings

Fig. 1 illustrates a schematic structural view of the external form of the present invention.

Fig. 2 illustrates a right side view of the second terminal pin of the present invention.

Fig. 3 illustrates an exploded view of the present invention.

The reference numbers illustrate: the structure comprises a first terminal pin 1, a notch 10, a second terminal pin 2, a packaging plastic body 3, a bridge wire 4, a first positioning sheet 5, a positioning groove 50 and a second positioning sheet 6.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments.

All other embodiments of the person skilled in the art, which are obtained without inventive work on the basis of the described embodiments of the present disclosure, are within the scope of protection of the present disclosure.

Refer to fig. 1-3.

The utility model provides an electronic detonator ignition component, which comprises a first terminal pin 1, a second terminal pin 2 and a packaging plastic body 3, wherein the packaging plastic body 3 is injected on the first terminal pin 1 and the second terminal pin 2, the first terminal pin 1 and the second terminal pin 2 both comprise a copper base layer and an electroplated layer arranged on the surface of the copper base layer, a bridge wire 4 is pressed between the end parts of the first terminal pin 1 and the second terminal pin 2, and the pressed part of the bridge wire 4 and the first terminal pin 1 and the second terminal pin 2 is welded in the copper base layers of the first terminal pin 1 and the second terminal pin 2 through laser welding or energy storage welding.

The specific use principle is as follows: firstly, the bridge wire 4 is crimped between the end parts of the first terminal pin 1 and the second terminal pin 2, in the crimping process, the end parts of the first terminal pin 1 and the second terminal pin 2 are bent into a hook shape, then the bridge wire 4 is placed in the hook formed by bending, and the bent parts are pressed on the main body parts of the first terminal pin 1 and the second terminal pin 2, so that two ends of the bridge wire 4 are crimped between the first terminal pin 1 and the second terminal pin 2. And then, processing the compression joint of the bridge wire 4 and the first terminal pin 1 and the second terminal pin 2 in a laser welding or energy storage welding mode so as to weld the bridge wire 4 in the copper base layers of the first terminal pin 1 and the second terminal pin 2. When laser welding is carried out, the laser welding acts on the central areas of the upper surfaces of the end parts of the first terminal pin 1 and the second terminal pin 2 after the crimping operation; when the energy storage welding is performed, the energy storage welding acts on the whole of the end portions of the first terminal pin 1 and the second terminal pin 2 after the crimping. Because the bridgewire 4 is welded in the copper base layer and is not blocked by an electroplated layer, the connection strength of the bridgewire 4 and the first terminal pin 1 and the second terminal pin 2 can be improved, the influence on the resistance value of the bridgewire 4 is reduced, the resistance value of the bridgewire 4 is closer to a true value, the product quality is improved, and the normal work of the electronic detonator is ensured.

Based on above-mentioned embodiment, the copper substrate is brass or tinplate, and the plating layer contains first cladding material and second cladding material, and first cladding material and second cladding material set gradually from inside to outside, and first cladding material and second cladding material are nickel coating and tin coating respectively, can improve the weldability and the life of first terminal pin 1 and second terminal pin 2.

Based on the above embodiment, the bridge wire 4 is in a V-shaped arc shape expanding outwards or inwards, so that the tensile resistance of the bridge wire 4 can be improved, and the probability of accidental tearing of the bridge wire 4 can be reduced.

Based on the above embodiment, the first positioning piece 5 and the second positioning piece 6 are obliquely arranged on one side of the first terminal pin 1 and one side of the second terminal pin 2, the first positioning piece 5 and the second positioning piece 6 are opposite in inclination direction, the top end extension lines of the first positioning piece 5 and the second positioning piece 6 are intersected, and the packaging plastic body 3 is injection-molded on the first positioning piece 5 and the second positioning piece 6. First spacer 5 and second spacer 6 can regard as the supporting framework of encapsulation plastic body 3, because first spacer 5 and second spacer 6 set up to opposite direction slope, prevent effectively that encapsulation plastic body 3 from taking place horizontal and fore-and-aft skew between first terminal foot 1 and the second terminal foot 2, can ensure that first terminal foot 1 and second terminal foot 2 and encapsulation plastic body 3 assembly are stable, improve product quality, avoid the electronic detonator to appear big gun mute trouble in using.

Based on above-mentioned embodiment, first spacer 5 and second spacer 6 set up along the length direction of first terminal foot 1 and second terminal foot 2, can reduce encapsulation plastic body 3's volume, strengthen first spacer 5 and second spacer 6 to encapsulation plastic body 3's location effect, improve assembly stability.

Based on above-mentioned embodiment, first spacer 5 and second spacer 6 all set up in the medial surface of first terminal foot 1 and second terminal foot 2, the lateral surface of first spacer 5 and second spacer 6 all is provided with constant head tank 50, during moulding plastics, encapsulation plastic body 3 combines with constant head tank 50, further improve the positioning effect of first spacer 5 and second spacer 6 to encapsulation plastic body 3, can reduce the volume of encapsulation plastic body 3, improve assembly stability.

Based on the above embodiment, the heights of the first positioning sheet 5 and the second positioning sheet 6 are a and b, respectively, and a > b. Through setting up first spacer 5 and second spacer 6 that highly differs, realize the top dislocation of first spacer 5 and second spacer 6, conveniently encapsulate plastic body 3's injection moulding, improve first spacer 5 and second spacer 6 and to the location effect of encapsulating plastic body 3, improve assembly stability.

Based on the above embodiment, the bridge wire 4 is a nichrome wire, and the packaging plastic body 3 is LCP plastic. The LCP plastic has excellent heat resistance and forming processing performance, and the nichrome wire has higher resistivity and heat resistance.

Based on the above embodiment, the two ends of the bridge wire 4 respectively exceed the outer end faces of the first terminal pin 1 and the second terminal pin 2, so that the crimping strength of the two ends of the bridge wire 4 can be improved, and the product quality can be improved.

Based on above-mentioned embodiment, first terminal foot 1 with the lateral surface of second terminal foot 2 all is provided with a plurality of breachs 10, and the paster welding process of being convenient for climbs tin, increases the welded joint point, improves welding quality, is convenient for carry out welding quality inspection.

The above embodiments are merely illustrative of the preferred embodiments of the present invention, and not restrictive, and various changes and modifications to the technical solutions of the present invention may be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are intended to fall within the scope of the present invention defined by the appended claims.

Claims (10)

1. The utility model provides an electronic detonator ignition components and parts, its characterized in that contains first terminal foot (1), second terminal foot (2), encapsulation plastic body (3) are moulded plastics first terminal foot (1) with on second terminal foot (2), first terminal foot (1) with second terminal foot (2) all contain copper-based layer, set up in the electroplated layer on copper-based layer surface, first terminal foot (1) with the crimping has bridging wire (4) between the tip of second terminal foot (2), bridging wire (4) with first terminal foot (1) with the crimping department of second terminal foot (2) is in through laser welding or energy storage welding first terminal foot (1) with second terminal foot (2) in the copper-based layer.

2. The electronic detonator ignition component of claim 1, wherein the copper base layer is brass or tinplate, the electroplated layer comprises a first plated layer and a second plated layer, the first plated layer and the second plated layer are arranged in sequence from inside to outside, and the first plated layer and the second plated layer are a nickel plated layer and a tin plated layer respectively.

3. The electronic detonator ignition component according to claim 2, wherein the bridge wire (4) is in a V-shaped arc shape expanding outwards or inwards.

4. The electronic detonator ignition component according to claim 3, wherein a first positioning sheet (5) and a second positioning sheet (6) are obliquely arranged on one side of each of the first terminal pin (1) and the second terminal pin (2), the first positioning sheet (5) and the second positioning sheet (6) are oppositely inclined and have top extension lines intersected, and the packaging plastic body (3) is injection-molded on the first positioning sheet (5) and the second positioning sheet (6).

5. The electronic detonator ignition component of claim 4, wherein the first positioning piece (5) and the second positioning piece (6) are arranged along the length direction of the first terminal pin (1) and the second terminal pin (2).

6. The electronic detonator ignition component according to claim 5, wherein the first positioning piece (5) and the second positioning piece (6) are both arranged on the inner side surfaces of the first terminal pin (1) and the second terminal pin (2), and the outer side surfaces of the first positioning piece (5) and the second positioning piece (6) are both provided with positioning grooves (50).

7. The electronic detonator ignition component according to claim 6, wherein the first positioning sheet (5) and the second positioning sheet (6) have heights a and b, respectively, wherein a is greater than b.

8. The electronic detonator ignition component as claimed in claim 7, wherein the bridging wire (4) is nichrome wire and the packaging plastic body (3) is LCP plastic.

9. The electronic detonator ignition component according to claim 8, wherein both ends of the bridge wire (4) respectively exceed the outer end faces of the first terminal pin (1) and the second terminal pin (2).

10. The electronic detonator ignition component according to claim 9, wherein the outer side surfaces of the first terminal pin (1) and the second terminal pin (2) are provided with a plurality of notches (10).

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