Compact electric detonator ignition module with stable structure

Abstract

The utility model discloses a compact electric detonator ignition module with a stable structure. The compact electric detonator ignition module comprises a circuit board, a bridge wire device, a resistor, a conductor wire and a shell, through the circuit board of the double-sided circuit board structure, the bridge wire device and the resistor can be reasonably distributed on two sides, the structural length of the circuit board is shortened in the horizontal direction, the occupied space is reduced, the space utilization rate is improved, the structure is more compact, and the requirement that an existing blasting object develops towards miniaturization is met; the left side and the right side of the shell body are provided with the positioning grooves used for being positioned with the external parts, when the ignition module and the external parts are assembled, the ignition module can be conveniently and well positioned, the assembling efficiency is improved, and convenience is brought to production; the protruding block is arranged at the rear end of the shell body, the protruding block wraps the electric lead, the structural strength is effectively improved, the structural stability is improved, the electric lead is not prone to loosening or being snapped when subjected to the action of external force, the product quality and stability are improved, and the reliability of the product function is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technology of electric detonator field, in particular to a compact electric detonator ignition module with stable structure. Background Art

[0002] With the continuous development of society, more and more mechanical equipment has been manufactured and widely used in agriculture, industry and service industries. There are many types of mechanical equipment. According to people's different needs, they have been further innovated and played an indispensable role in people's work and life. Mechanical equipment is everywhere.

[0003] The internal structure of mechanical equipment is becoming more and more complex, and its functions are becoming more and more diverse, and are constantly being improved. Mechanical equipment generally includes drive devices, speed change devices, transmission devices, working devices, braking devices, protective devices, lubrication systems, cooling systems and detonation devices, etc. Different devices play different roles in mechanical equipment.

[0004] Electric detonators are devices used to detonate explosives and are explosive materials. They are usually composed of an explosive called "ASA compound" and a trace amount of TNT, tetryl or PETN as an initiation enhancer sealed in a thin metal tube with a diameter of about 10 mm. Electric detonators can generally be divided into five categories: instant electric detonators, short-delay electric detonators, long-delay electric detonators, bridge electric detonators and slapper electric detonators, etc. Electric detonators have a wide range of applications, such as mining, road construction, building demolition, and working surfaces with water or underwater. In addition, electronic detonators are a new type of explosive material that uses electronic technology to achieve precise delayed detonation. It has the characteristics of high precision, low power consumption, safety and reliability, and easy use. It is particularly suitable for work scenarios that require high precision. The ignition module is an important module in the electric detonator. The bridge wire on the ignition module is used to stick to the explosives for detonation.

[0005] The current ignition module generally includes a circuit board, a bridge wire device, a resistor, a conductive wire and a shell. The circuit board is usually a single-layer circuit board. The bridge wire device and the resistor are arranged at one end of the circuit board, and the conductive wire is arranged at the other end of the circuit board. The bridge wire device, the resistor and the conductive wire are arranged on the same side of the circuit board. The shell is covered outside the conductive wire and part of the circuit board. Although the ignition module has a simple structure, due to the unreasonable structural layout design, the length of the circuit board needs to be designed to be longer, the space occupied is larger, the space utilization rate is low, the structure is not compact enough, and the existing explosives cannot meet the demand for miniaturization. Secondly, when the ignition module is assembled with external parts, the structure of the shell is not convenient to position the ignition module well, the assembly efficiency is low, and it brings inconvenience to production; and the conductive wire in the ignition module is directly embedded in the shell and extends out of the shell. The structural strength is not large enough, the structure is not stable enough, and the conductive wire is easy to loosen and be broken when it is subjected to external force. The product quality is poor and cannot meet the existing needs. Therefore, it is necessary to study a new technical solution to improve the current ignition module. Utility Model Content

[0006] In view of this, the utility model aims to improve the deficiencies of the prior art, and its main purpose is to provide a compact electric detonator ignition module with a stable structure, which can effectively solve the problems of unreasonable structural layout design of the existing ignition module, the length of the circuit board needs to be designed to be longer, the space occupied is larger, the space utilization rate is low, the structure is not compact enough, and it cannot meet the demand of the existing explosives towards miniaturization. When the ignition module is assembled with external parts, the structure of the outer shell is not convenient for positioning the ignition module well, and the assembly efficiency is low. The conductive wires in the ignition module are directly embedded in the outer shell and extend out of the outer shell. The structural strength is not strong enough and the structure is not stable enough. When the conductive wires are subjected to external forces, they are easily loosened and broken, resulting in poor product quality.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A compact electric detonator ignition module with a stable structure includes a circuit board, a bridge wire device, a resistor, a conductive wire and a shell; the circuit board is a double-sided circuit board structure; the bridge wire device is arranged on the top surface of one end of the circuit board and is electrically connected to the circuit board; the resistor is arranged on the bottom surface of the circuit board and is electrically connected to the circuit board; the conductive wire is arranged at the other end of the circuit board and is electrically connected to the circuit board; the shell includes a shell body, an extension part and a protrusion connected in an integral manner, and the left and right sides of the shell body are provided with positioning grooves for positioning with external parts, the shell body covers one end of the circuit board and one end of the conductive wire, the extension part extends forward from the lower side of the front end of the shell body, the extension part covers the resistor and a part of the bottom surface of the circuit board, the protrusion is arranged at the rear end of the shell body, and the protrusion covers the conductive wire.

[0009] As a preferred solution, a first soldering pad is provided on the top surface of the circuit board near one end of the conductive wire, and one end of the conductive wire is fixedly welded to the first soldering pad.

[0010] As a preferred solution, there are two first pads, which are symmetrically arranged on the circuit board. Correspondingly, there are also two conductive wires, and one end of the two conductive wires is respectively welded and fixed to the corresponding first pads.

[0011] As a preferred solution, a second soldering pad is provided on the bottom surface of the circuit board, and two ends of the resistor are respectively fixedly welded to the corresponding second soldering pads.

[0012] As a preferred solution, the bridge wire device includes a bridge wire and two conductive arms, the front ends of the two conductive arms are electrically connected through the bridge wire, and two third soldering pads are arranged on the top surface of the circuit board near one end of the bridge wire device, and the rear ends of the two conductive arms are respectively welded and fixed to the corresponding third soldering pads.

[0013] As a preferred solution, a fixing block is further provided, which is arranged at the rear ends of the two conductive arms and fixes the two conductive arms to be connected, thereby effectively enhancing the stability of the connection structure between the two conductive arms, making it more firm and durable, and improving the quality of the product.

[0014] As a preferred solution, two positioning holes are formed through the upper and lower surfaces of the circuit board, and the two positioning holes are respectively located on the sides of the corresponding third solder pads. The rear end of each conductive arm is bent outward to extend with a positioning protrusion, and the two positioning protrusions are respectively arranged in the corresponding positioning holes for positioning, which effectively enhances the stability of the connection structure between the circuit board and the two conductive arms, improves the quality of the product, simplifies assembly, and improves production efficiency.

[0015] As a preferred solution, the circuit board includes a circuit board body, a support part and a avoidance groove. There are two support parts, and the two support parts extend outward from one end of the circuit board body close to the bridge wire device. The front ends of the two conductive arms are respectively arranged on the corresponding support parts, the avoidance groove is arranged between the two support parts, and the middle part of the bridge wire is arranged above the avoidance groove.

[0016] As a preferred solution, the housing is a housing made by integral injection molding.

[0017] As a preferred solution, the resistor is a chip resistor with a simple structure, convenient and quick assembly, and improved production efficiency.

[0018] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that:

[0019] The circuit board with a double-sided circuit board structure can reasonably design the bridge wire device and the resistor to be distributed on both sides, shorten the structural length of the circuit board in the horizontal direction, reduce the occupied space, improve the space utilization rate, and make the structure more compact, meeting the needs of the existing explosives to develop towards miniaturization; secondly, by arranging positioning grooves for positioning with external parts on the left and right sides of the shell body, when the ignition module is assembled with external parts, it is convenient to position the ignition module well, improve the assembly efficiency, and bring convenience to production; and, by arranging the protrusion at the rear end of the shell body and covering the conductive wire with the protrusion, the structural strength is effectively increased, the stability of the structure is improved, the conductive wire is not easy to loosen or be pulled apart when subjected to external force, the product quality and stability are improved, the reliability of the product function is guaranteed, the service life of the product is extended, and the existing needs are met.

[0020] In order to more clearly illustrate the structural features and functions of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of a preferred embodiment of the utility model;

[0022] Figure 2 It is a three-dimensional structural schematic diagram of another angle of a preferred embodiment of the utility model;

[0023] Figure 3 It is an exploded view of a preferred embodiment of the utility model;

[0024] Figure 4 It is an exploded view from another angle of the preferred embodiment of the utility model;

[0025] Figure 5 It is a partial structural schematic diagram of a preferred embodiment of the utility model;

[0026] Figure 6 It is a three-dimensional structural schematic diagram of the conductive arm in the preferred embodiment of the utility model.

[0027] Description of the accompanying drawings:

[0028] 10. Circuit board 11. First solder pad

[0029] 12. Second pad 13. Third pad

[0030] 14. Circuit board body 15. Support part

[0031] 16. Avoidance groove 101, positioning hole

[0032] 20. Bridgewire device 21. Bridgewire

[0033] 22. Conductive arm 221. Positioning protrusion

[0034] 23. Fixed block 30. Resistors

[0035] 40. Conductive wire 50. Shell

[0036] 51. Shell body 511. Positioning groove

[0037] 52. Extension portion 53. Bump. DETAILED DESCRIPTION

[0038] Please refer to Figures 1 to 6 As shown, it shows the specific structure of a preferred embodiment of the utility model, including a circuit board 10, a bridge wire device 20, a resistor 30, a conductive wire 40 and a housing 50.

[0039] The circuit board 10 is a double-sided circuit board structure; in the present embodiment, a first solder pad 11 is arranged on the top surface of the circuit board 10 near one end of the conductive wire 40; there are two first solder pads 11, and the two first solder pads 11 are arranged symmetrically on the left and right of the circuit board 10; a second solder pad 12 is arranged on the bottom surface of the circuit board 10, specifically, there are two second solder pads 12; two third solder pads 13 are arranged on the top surface of the circuit board 10 near one end of the bridge wire device 20; two positioning holes 10 are formed through the upper and lower surfaces of the circuit board 10 1, the two positioning holes 101 are respectively located at the sides of the corresponding third solder pads 13; the circuit board 10 includes a circuit board body 14, a support portion 15 and a avoidance groove 16, the support portion 15 is two, the two support portions 15 extend outward from one end of the circuit board body 14 close to the bridge wire device 20, each support portion 15 is not less than the side edges and the front edge of the conductive arm 22, in this embodiment, the support portion 15 is larger than the side edges and the front edge of the conductive arm 22, and the avoidance groove 16 is arranged between the two support portions 15.

[0040] The bridge wire device 20 is arranged on the top surface of one end of the circuit board 10 and is electrically connected to the circuit board 10; in the present embodiment, the bridge wire device 20 includes a bridge wire 21 and two conductive arms 22, the front ends of the two conductive arms 22 are electrically connected through the bridge wire 21, and the rear ends of the two conductive arms 22 are respectively welded and fixed to the corresponding third pads 13; a fixing block 23 is further provided, and the fixing block 23 is arranged at the rear ends of the two conductive arms 22 and fixes the two conductive arms 22 to effectively enhance the stability of the connection structure between the two conductive arms 22, making it more firm and durable, and improving the quality of the product; the rear end of each conductive arm 22 A positioning protrusion 221 is bent and extended outward, and the two positioning protrusions 221 are respectively arranged in the corresponding positioning holes 101 for positioning, which effectively enhances the stability of the connection structure between the circuit board 10 and the two conductive arms 22, improves the quality of the product, simplifies assembly, and improves production efficiency; the front ends of the two conductive arms 22 are respectively arranged on the corresponding support parts 15, and the middle part of the bridge wire 21 is arranged above the avoidance groove 16. Specifically, the middle part of the bridge wire 21 is bent and arranged in the avoidance groove 16. Through the setting of the avoidance groove 16, the amount of gunpowder can be increased, which helps the ignition and detonation of gunpowder and improves the efficiency of successful ignition of gunpowder.

[0041] The resistor 30 is arranged on the bottom surface of the circuit board 10 and is electrically connected to the circuit board 10; in the present embodiment, the two ends of the resistor 30 are respectively welded and fixed to the corresponding second pads 12, and there is one resistor 30, and it can also be set as a plurality of resistors 30; the resistor 30 is a chip type resistor, which has a simple structure and is easy and quick to assemble, thereby improving production efficiency.

[0042] The conductive wire 40 is disposed at the other end of the circuit board 10 and is electrically connected to the circuit board 10. In the present embodiment, one end of the conductive wire 40 is fixedly welded to the first soldering pad 11. There are two conductive wires 40, and one end of the two conductive wires 40 is respectively fixedly welded to the corresponding first soldering pad 11.

[0043] The housing 50 includes a housing body 51, an extension 52 and a protrusion 53 which are integrally connected. Positioning grooves 511 for positioning with external parts are provided on the left and right sides of the housing body 51, which are conducive to quickly positioning the product, effectively enhancing the stability of the connection structure between the product and the external parts, facilitating the assembly of the product, making the production and assembly more convenient and quick, and bringing convenience to the user. The housing body 51 covers one end of the circuit board 10 and one end of the conductive wire 40, and the extension 52 extends forward from the lower side of the front end of the housing body 51. The extension 52 covers the resistor 30 and part of the bottom of the circuit board 10. The surface is beneficial to protecting the resistor 30 and the circuit board 10. The protrusion 53 is arranged at the rear end of the shell body 51. The protrusion 53 covers the conductive wire 40, which is beneficial to protecting the conductive wire 40 and can enhance the structural strength of the conductive wire 40, so that the conductive wire 40 is not easily broken when subjected to external force, thereby improving the quality of the product and extending the service life of the product; the circuit board 10, the resistor 30 and the conductive wire 40 can be better protected by the arrangement of the shell 50, and the stability of the structure is effectively enhanced; in this embodiment, the shell 50 is a shell 50 made by integral injection molding; the protrusion 53 is a square structure.

[0044] The design focus of this utility model is:

[0045] The circuit board with a double-sided circuit board structure can reasonably design the bridge wire device and the resistor to be distributed on both sides, shorten the structural length of the circuit board in the horizontal direction, reduce the occupied space, improve the space utilization rate, and make the structure more compact, meeting the needs of the existing explosives to develop towards miniaturization; secondly, by arranging positioning grooves for positioning with external parts on the left and right sides of the shell body, when the ignition module is assembled with external parts, it is convenient to position the ignition module well, improve the assembly efficiency, and bring convenience to production; and, by arranging the protrusion at the rear end of the shell body and covering the conductive wire with the protrusion, the structural strength is effectively increased, the stability of the structure is improved, the conductive wire is not easy to loosen or be pulled apart when subjected to external force, the product quality and stability are improved, the reliability of the product function is guaranteed, the service life of the product is extended, and the existing needs are met.

[0046] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A compact electric detonator ignition module with a stable structure, comprising a circuit board, a bridge wire device, a resistor, a conductive wire and a housing; characterized in that: The circuit board is a double-sided circuit board structure; the bridge wire device is arranged on the top surface of one end of the circuit board and is electrically connected to the circuit board; the resistor is arranged on the bottom surface of the circuit board and is electrically connected to the circuit board; the conductive wire is arranged at the other end of the circuit board and is electrically connected to the circuit board; the shell includes a shell body, an extension part and a protrusion that are integrally formed and connected, and the left and right sides of the shell body are provided with positioning grooves for positioning with external parts. The shell body covers one end of the circuit board and one end of the conductive wire. The extension part extends forward from the lower side of the front end of the shell body, and the extension part covers the resistor and part of the bottom surface of the circuit board. The protrusion is arranged at the rear end of the shell body, and the protrusion covers the conductive wire.

2. The compact electric detonator ignition module with a stable structure according to claim 1 is characterized in that: A first soldering pad is arranged on the top surface of the circuit board near one end of the conductive wire, and one end of the conductive wire is fixedly welded to the first soldering pad.

3. The compact electric detonator ignition module with a stable structure according to claim 2 is characterized in that: There are two first pads, which are symmetrically arranged on the circuit board. Correspondingly, there are also two conductive wires, and one end of the two conductive wires is respectively welded and fixed to the corresponding first pads.

4. The compact electric detonator ignition module with a stable structure according to claim 1 is characterized in that: The bottom surface of the circuit board is provided with a second soldering pad, and the two ends of the resistor are respectively fixedly welded to the corresponding second soldering pads.

5. The compact electric detonator ignition module with a stable structure according to claim 1 is characterized in that: The bridge wire device includes a bridge wire and two conductive arms, the front ends of the two conductive arms are electrically connected through the bridge wire, two third soldering pads are arranged on the top surface of the circuit board near one end of the bridge wire device, and the rear ends of the two conductive arms are respectively welded and fixed to the corresponding third soldering pads.

6. The compact electric detonator ignition module with a stable structure according to claim 5 is characterized in that: A fixing block is further provided, which is arranged at the rear ends of the two conductive arms and fixedly connects the two conductive arms.

7. The compact electric detonator ignition module with a stable structure according to claim 5 is characterized in that: Two positioning holes are formed through the upper and lower surfaces of the circuit board, and the two positioning holes are respectively located at the sides of the corresponding third pads. The rear end of each conductive arm is bent outward to extend a positioning protrusion, and the two positioning protrusions are respectively arranged in the corresponding positioning holes for positioning.

8. The compact electric detonator ignition module with a stable structure according to claim 5 is characterized by: The circuit board includes a circuit board body, a support part and a avoidance groove. There are two support parts, and the two support parts extend outward from one end of the circuit board body close to the bridge wire device. The front ends of the two conductive arms are respectively arranged on the corresponding support parts, the avoidance groove is arranged between the two support parts, and the middle part of the bridge wire is arranged above the avoidance groove.

9. The compact electric detonator ignition module with a stable structure according to claim 1 is characterized in that: The shell is a shell made by integral injection molding.

10. The compact electric detonator ignition module with a stable structure according to claim 1, characterized in that: The resistor is a chip resistor.

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