CN218034686U

CN218034686U - Medicine cup type bridge wire ignition resistor

Info

Publication number: CN218034686U
Application number: CN202222325040.6U
Authority: CN
Inventors: 张高源; 左方甫
Original assignee: Kunshan Haorui Electronic Technology Co ltd
Current assignee: Guangde Garui Electronics Co ltd
Priority date: 2022-09-01
Filing date: 2022-09-01
Publication date: 2022-12-13
Anticipated expiration: 2032-09-01

Abstract

The utility model discloses a medicine cup type bridgewire ignition resistor, which comprises a bridgewire base plate, a cover plate fixed on the bridgewire base plate in a pressing way, and bonding pads arranged at the peripheries of the two ends of the cover plate and the bridgewire base plate; the inner side surface of the bridge wire substrate is fixedly welded with a bridge wire, a bridge cup hole for avoiding the bridge wire is formed in the position, corresponding to the bridge wire, of the cover plate, and the bridge wire is electrically connected with the bonding pad. The utility model forms the medicine cup type bridgewire ignition resistor by arranging the medicine cup structure, and has a volume more than 80 percent smaller than other traditional bridgewires; the bridgewire is arranged in the medicine cup and cannot be easily damaged; the utility model discloses a medicine cup loads the ignition medicament, and the medicament parcel is inside the medicine cup, and the stub bar is difficult to damaged, has improved shock resistance, security, reliability.

Description

Medicine cup type bridge wire ignition resistor

Technical Field

The utility model relates to an electronic detonator ignition head technical field, specific saying so relates to a medicine cup formula bridging filament firing resistor.

Background

The traditional bridge wire resistor of the electric detonator ignition head has two welding modes: firstly, directly welding a bridge wire to a detonator leg wire to form a bridge wire resistor; secondly, the bridge wire is welded on the metal connecting piece, and then the metal connecting piece is welded on the detonator foot line. The bridge wire resistor formed by the two welding modes has no special protection structure, and the bridge wire is easy to damage, particularly under the vibration condition, so that the shock resistance, the safety and the reliability of the electric detonator are influenced.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects, the utility model provides a medicine cup formula bridging filament firing resistor sets up the medicine cup and arranges the bridging filament in it to avoid the bridging filament impaired easily, improve electric detonator's shock resistance, security and reliability.

The utility model discloses a solve the technical scheme that its technical problem adopted and be: a medicine cup type bridgewire ignition resistor comprises a bridgewire substrate, a cover plate and bonding pads, wherein the cover plate is fixed on the bridgewire substrate in a pressing mode, and the bonding pads are arranged on the peripheries of two ends of the cover plate and the bridgewire substrate; the inner side surface of the bridge wire substrate is fixedly welded with a bridge wire, a bridge cup hole for avoiding the bridge wire is formed in the position, corresponding to the bridge wire, of the cover plate, and the bridge wire is electrically connected with the bonding pad.

As a further improvement of the utility model, the bridgewire substrate is formed by welding the bridgewire on one side surface of the one-layer double-sided copper-clad substrate.

As a further improvement of the utility model, the bridgewire orientation the bridge cup hole direction is arc-shaped bending.

As a further improvement, the bridgewire base plate is formed for two-layer two-sided copper-clad base plate pressfitting, the bridgewire welded fastening is close to on the two-sided copper-clad base plate of wherein one deck of apron, and this layer two-sided copper-clad base plate corresponds the bridgewire position forms the through-hole.

As a further improvement of the utility model, the bridgewire faces to the direction of the bridge cup hole and is arc-shaped and bent.

As a further improvement of the utility model, the bridgewire is back to the direction of the bridge cup hole is arc-shaped and bent.

The utility model has the advantages that: the utility model forms the medicine cup type bridgewire ignition resistor by arranging the medicine cup structure, and has a volume more than 80 percent smaller than other traditional bridgewires; the bridgewire is arranged in the medicine cup and cannot be easily damaged; the utility model adopts the chip-level wire bonding machine, the wire bonding precision is high, the length of the bridge wire can be controlled to be three thousandth of error, and the precision is improved by more than 10 times compared with the traditional bridge wire; the utility model adopts the medicine cup to be filled with ignition medicine, the medicine is wrapped in the medicine cup, the medicine head is not easy to be damaged, and the shock resistance, the safety and the reliability are improved; the utility model discloses a circuit photoetching technology can the industrial production, and the uniformity is high, and the quality of product is uneven around the equipment wearing and tearing caused when can not be like traditional bridgewire preparation.

Drawings

FIG. 1 is a schematic structural view of embodiment 1 of the present invention;

fig. 2 is a schematic structural view of embodiment 2 of the present invention;

fig. 3 is a schematic structural view of embodiment 3 of the present invention;

fig. 4 is a schematic structural view of embodiment 4 of the present invention;

fig. 5 is a plan view of embodiment 1 of the present invention;

fig. 6 is a bottom view of embodiment 1 of the present invention.

The following description is made with reference to the accompanying drawings:

1. a bridgewire substrate; 11. a bridging filament; 12. a through hole; 2. a cover plate; 21. a bridge cup hole; 3. and a bonding pad.

Detailed Description

Several preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Example 1

Referring to the attached drawing 1, for the utility model discloses a medicine cup formula bridgewire ignition resistance a structure sketch map, including bridgewire base plate 1, pressfitting be fixed in apron 2 on the bridgewire base plate to and set up in the pad 3 of apron and bridgewire base plate both ends periphery. The inner side face of the bridge wire substrate is fixedly welded with a bridge wire 11, a bridge cup hole 21 for avoiding the bridge wire is formed in the position, corresponding to the bridge wire, of the cover plate, the bridge wire is bent in an arc shape towards the direction of the medicine cup hole 21, and meanwhile the bridge wire 11 is electrically connected with the bonding pad 3. When the ignition powder cup is used, ignition powder can be filled in the powder cup hole, so that the powder cup wraps the powder inside the ignition powder cup, the powder head is not easy to damage, and the shock resistance, the safety and the reliability are improved.

In this embodiment, the shape of the medicine cup can be customized according to the requirement, such as an oval shape and a circular shape, and fig. 5 is a top view of the ignition resistor, and fig. 6 is a bottom view.

The manufacturing process of the medicine cup type bridgewire ignition resistor comprises the following steps:

s1, selecting non-conductive material ceramic or glass fiber cloth as a substrate, and respectively attaching a layer of copper foil to two opposite side surfaces of the substrate to form a copper-clad substrate, preferably a square plate;

s2, drilling first positioning holes at the peripheral positions, namely four corners, of the copper-clad substrate;

s3, etching a plurality of pairs of bridge wire welding surface patterns (generally circular, namely, copper foils except welding points are etched away) on one side surface of the copper-clad substrate, and respectively plating a nickel-gold layer or a nickel-palladium-gold layer on the positions, corresponding to the two bridge wire welding points, of each pair of bridge wire welding surface patterns;

s4, intercepting a plurality of bridge wires with required sizes, and respectively welding two ends of each bridge wire on two bridge wire welding points of each pair of bridge wire welding surface patterns;

s5, dispensing solder paste on the bridge wire welding point welded with the bridge wire by using a dispenser, melting the solder paste by using a reflow furnace, wrapping the bridge wire welding point with the solder paste to prepare a bridge wire substrate containing a plurality of bridge wire units, or naturally gluing and solidifying the bridge wire welding point by using the dispenser to prepare the bridge wire substrate;

s6, another copper-clad substrate obtained in the step S1 is taken, a second positioning hole is drilled at the position, corresponding to the first positioning hole, of the periphery of the copper-clad substrate, a plurality of medicine cup holes (the medicine cup holes are through holes) are drilled at the positions, corresponding to the plurality of pairs of bridge wire welding surface patterns, of one side face, and redundant copper foil is etched to form a cover plate with a plurality of cover plate units;

s7, coating glue on the bottom of the cover plate, accurately sleeving the cover plate on the bridgewire base plate by utilizing the first positioning hole and the second positioning hole, then pressing and fixing the cover plate and the bridgewire base plate into a whole, and correspondingly forming a first medicine cup type bridgewire ignition resistance unit by each bridgewire unit and the cover plate unit;

s8, grooves are formed in two ends of each first medicine cup type bridge wire ignition resistance unit, copper is plated in the grooves, bonding pads are formed, and a semi-finished product containing a plurality of medicine cup type bridge wire ignition resistance units is obtained;

s9, cutting each unit of the semi-finished product into single pieces by adopting chip cutting equipment;

and S10, inspecting and packaging to obtain a plurality of single medicine cup type bridgewire ignition resistors.

Example 2

Referring to fig. 2, another structural schematic diagram of a cup-shaped igniter resistor of the present invention is the same as embodiment 1, and the difference between this embodiment and embodiment 1 lies in: the bridgewire substrate 1 is formed by laminating two layers of double-sided copper-clad substrates, the bridgewire is welded and fixed on the layer of double-sided copper-clad substrate close to the cover plate 2, and the layer of double-sided copper-clad substrate corresponds to the bridgewire to form a through hole.

Similarly, when the medicine cup type bridgewire ignition resistor is used, the ignition agent can be filled in the medicine cup hole, so that the agent is wrapped in the medicine cup, the medicine head is not easy to damage, and the shock resistance, the safety and the reliability are improved.

The medicine cup formula bridgewire firing resistor manufacture craft of this embodiment is the same basically with embodiment 1, and what the institute differed is after step S2, and another copper base plate of refabrication covers, and the through-hole is makeed on covering the copper base plate simultaneously, then the bridgewire welding covers on this copper base plate again, simultaneously in step S7, covers copper base plate and apron common pressfitting fixed as an organic whole with two, thereby forms medicine cup formula bridgewire firing resistor.

Example 3

Referring to the attached drawing 3, for the third structural schematic diagram of a medicine cup formula bridgewire firing resistor, the bridgewire base plate 1 of this embodiment is two-layer two-sided to cover copper base plate pressfitting and forms, 11 welded fastening of bridgewire is on being close to the two-sided copper base plate of one deck of apron 2, and this layer two-sided copper base plate of covering corresponds 11 positions of bridgewire and forms through-hole 12. This embodiment is different from embodiment 2 in that the bridgewire in embodiment 2 is curved in an arc shape back to the bridgecup hole 21.

The manufacturing process of the medicine cup type bridge wire ignition resistor of the embodiment is completely the same as that of the embodiment 2, except that the bridge wire is completely directional.

Example 4

Referring to fig. 4, a fourth structural diagram of a cup-shaped bridge-wire firing resistor according to the present invention is shown, the structure of this embodiment is substantially the same as that of embodiment 3, except that the structure of the bonding pad is different.

Similarly, when the medicine cup type bridgewire ignition resistor is used, the ignition agent can be filled in the medicine cup hole, so that the medicine cup wraps the agent in the medicine cup hole, the medicine head is not easy to damage, and the shock resistance, the safety and the reliability are improved.

The manufacturing process of the cup-type bridgewire ignition resistor of the present example is completely the same as that of example 3, except for the shape of the bonding pad.

Therefore, the utility model forms the medicine cup type bridge wire ignition resistor by arranging the medicine cup structure, and has a volume more than 80% smaller than other traditional bridge wires; the bridgewire is arranged in the medicine cup and cannot be easily damaged; the utility model adopts the chip-level wire bonding machine, the wire bonding precision is high, the length of the bridge wire can be controlled to be three thousandth of error, and the precision is improved by more than 10 times compared with the traditional bridge wire; the utility model adopts the medicine cup to be filled with the ignition medicine, the medicine is wrapped inside the medicine cup, the medicine head is not easy to be damaged, and the shock resistance, the safety and the reliability are improved; the utility model discloses a circuit photoetching technology can the industrial production, and the uniformity is high, and the quality of product is uneven around the equipment wearing and tearing caused when can not be like traditional bridgewire preparation.

In the previous description, numerous specific details were set forth in order to provide a thorough understanding of the invention. The foregoing description is only a preferred embodiment of the invention, which can be embodied in many different forms and is therefore not limited to the specific embodiments disclosed above. While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. All the contents that do not depart from the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical substance of the present invention all still belong to the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides a medicine cup formula bridgewire firing resistor which characterized in that: the bridge wire fixing device comprises a bridge wire substrate, a cover plate and bonding pads, wherein the cover plate is fixed on the bridge wire substrate in a pressing mode, and the bonding pads are arranged on the peripheries of two ends of the cover plate and the bridge wire substrate; the inner side surface of the bridge wire substrate is fixedly welded with a bridge wire, a bridge cup hole used for avoiding the bridge wire is formed in the position, corresponding to the bridge wire, of the cover plate, and the bridge wire is electrically connected with the bonding pad.

2. The cup-type bridgewire ignition resistor of claim 1, wherein: the bridgewire substrate is formed by welding bridgewires on one side surface of a layer of double-sided copper-clad substrate.

3. The cup-type bridgewire ignition resistor of claim 2, wherein: the bridgewire is bent in an arc shape towards the direction of the bridge cup hole.

4. The cup-type bridgewire ignition resistor of claim 1, wherein: the bridgewire substrate is formed by pressing two layers of double-sided copper-clad substrates, the bridgewire is welded and fixed on one layer of double-sided copper-clad substrate close to the cover plate, and a through hole is formed in the position, corresponding to the bridgewire, of the double-sided copper-clad substrate.

5. The cup-type bridgewire ignition resistor according to claim 4, wherein: the bridgewire is bent in an arc shape towards the direction of the bridge cup hole.

6. The cup-type bridgewire ignition resistor according to claim 4, wherein: the direction of the bridge wire back to the bridge cup hole is arc-shaped.