Novel tensile electronic detonator patch ignition bridge wire

Abstract

The utility model discloses a novel tensile electronic detonator patch ignition bridge wire, which comprises a bridge wire, a plastic packaging block and two patch terminals, each patch terminal comprises a patch part, a connecting part and a fixing part which are integrally connected in sequence from front to back, and the left end and the right end of the bridge wire are respectively embedded into the corresponding fixing parts. The upper end faces of the patch parts of the two patch terminals abut against the lower end face of the plastic packaging block, the connecting part is exposed out of the rear side of the plastic packaging block, the lower end of the plastic packaging block is integrally connected with a fixing piece, the opposite sides of the patch parts of the two patch terminals are provided with first clamping parts, and the left side and the right side of the fixing piece are provided with second clamping parts. The first clamping part and the second clamping part are adaptively connected, the patch parts of the two patch terminals are integrally connected with insertion parts which are bent and extend downwards, and the insertion parts are exposed out of the plastic packaging block and extend downwards out of the lower end surfaces of the corresponding patch parts; according to the utility model, the tensile property is enhanced, the phenomenon of easy separation caused by pulling is avoided, and the connection firmness between the patch terminal and the plastic packaging block is improved.

Description

Technical Field

[0001] The utility model relates to the field technology of patch bridge wires, in particular to a novel tensile-resistant electronic detonator patch ignition bridge wire. Background Art

[0002] Existing industrial electric detonators are mainly composed of leg wires, plastic plugs, electronic detonator control modules, ignition elements with ignition powder, reinforcement caps, basic powder and basic tube shells. Among them, the ignition element is one of the most critical components of the entire electric detonator. The current common ignition elements of electronic detonator control modules include "powder cup type high-resistance ignition head" and "chip resistor type ignition head". The "powder cup type high-resistance ignition head" uses a powder cup to protect the ignition powder, and a bridge wire is arranged in the powder cup. The "chip resistor type ignition head" uses imported ignition chip resistors as bridge wires, which fix the bridge wire between two electrode patches. The two electrode patches are connected to the circuit, and the temperature of the bridge wire is controlled by current to cause it to fuse and achieve the purpose of detonation. The quality of the bridge wire is directly related to the quality of the entire detonating device.

[0003] For example, China Publication No. CN215984216U discloses a patch-type bridgewire ignition element, which includes a bridgewire, a plastic block and two bridgewire connection terminals with the same structure, wherein the bridgewire connection terminal includes a patch portion, a connecting arm and a crimping elbow, wherein the patch portion and the crimping elbow are respectively located at two ends of the connecting arm; the patch portions of the two bridgewire connection terminals are fixed at a relative interval on one end face of the plastic block, and the bottom surface of the patch portion is exposed from the plastic block; the two ends of the bridgewire are respectively crimped into the crimping elbows of the two bridgewire connection terminals, and the crimping elbow is welded and fixed to the two ends of the bridgewire as a whole; although it can achieve low production cost and low price It is cheap, easy to mount, suitable for automated patch production, simple, fast and efficient. However, its bridge wire connection terminal is flat as a whole, so it is soldered flatly on the surface of the PCB board, which is limited by its poor tensile resistance when pulled, resulting in easy detachment. In addition, the bridge wire connection terminal and the plastic encapsulation block are only fixedly connected by a tilted embedded block, which makes the fixing firmness between the bridge wire connection terminal and the plastic encapsulation block poor, and there is a lack of positioning structure between the two bridge wire connection terminals for mutual positioning, which makes it difficult to position the two bridge wire connection terminals during molding, increasing the difficulty of processing and manufacturing.

[0004] Therefore, it is necessary to develop a new technology to solve the above problems. Utility Model Content

[0005] In view of this, the utility model aims to solve the deficiencies in the prior art, and its main purpose is to provide a new type of tensile-resistant electronic detonator patch ignition bridge wire, which has enhanced tensile resistance and will not be easily detached due to pulling, improves the connection firmness between the patch terminal and the plastic sealing block, makes positioning during molding and manufacturing easier, and reduces the difficulty of manufacturing.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A novel tensile-resistant electronic detonator patch ignition bridge wire comprises a bridge wire, a plastic encapsulation block and two patch terminals, the two patch terminals are arranged at a left-right symmetrical spacing, the two patch terminals each comprise a patch portion, a connecting portion and a fixing portion which are integrally connected in sequence from front to back, the left and right ends of the bridge wire are respectively embedded in the corresponding fixing portions, the upper end surfaces of the patch portions of the two patch terminals abut against the lower end surface of the plastic encapsulation block, the connecting portion is exposed at the rear side of the plastic encapsulation block, the lower end of the plastic encapsulation block is integrally formed and connected with a fixing plate, the opposite sides of the patch portions of the two patch terminals are each provided with a first clamping portion, the left and right sides of the fixing plate are each provided with a second clamping portion, the first clamping portion is adaptively connected to the second clamping portion, the patch portions of the two patch terminals are each integrally connected with an insertion portion which is bent and extended downward, the insertion portion is exposed outside the plastic encapsulation block and extends downward outside the lower end surface of the corresponding patch portion.

[0008] As a preferred embodiment, the insertion portion includes a bending portion and an extension portion integrally connected to the lower end of the bending portion, one end of the bending portion away from the extension portion is integrally connected to the side wall of the corresponding patch portion, and the extension portion extends downwardly out of the lower end surface of the corresponding patch portion.

[0009] As a preferred solution, the insertion portion is arranged on the front side wall of the patch portion of the two patch terminals.

[0010] As a preferred solution, the insertion portion is arranged on opposite side walls of the patch portions of the two patch terminals.

[0011] As a preferred solution, a plurality of first clamping parts are provided, and the plurality of first clamping parts are arranged at a front-to-back interval. Correspondingly, a plurality of second clamping parts are provided, and the plurality of second clamping parts are arranged at a front-to-back interval.

[0012] As a preferred solution, the first clamping portion is a clamping protrusion, the second clamping portion is a clamping groove, and the clamping protrusion is clamped with the clamping groove.

[0013] As a preferred solution, the left and right ends of the bridge wire extend out of the corresponding fixing parts respectively, and the portion of the bridge wire located between the fixing parts of the two patch terminals extends outward in an arc shape in a direction away from the plastic encapsulation block.

[0014] As a preferred solution, the lower end surfaces of the patch portion, the connecting portion and the fixing plate are arranged flush.

[0015] As a preferred solution, the opposite side walls of the patch parts of the two patch terminals are both recessed with a plurality of notches, and the plurality of notches are arranged at a front-to-back interval.

[0016] As a preferred solution, an identification portion for identifying the specifications and dimensions of the bridge wire is provided on the upper surface of the plastic encapsulation block.

[0017] 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 the patch parts of the two patch terminals are integrally connected with the insertion parts that bend downward and extend, and the insertion parts are exposed outside the plastic package block and extend downward outside the lower end surface of the corresponding patch part. In this way, when it is assembled on the PCB board, it can be assembled on the PCB board through the insertion parts, thereby enhancing its tensile resistance and preventing the phenomenon of easy detachment due to pulling.

[0018] Secondly, a fixing sheet is integrally formed and connected to the lower end of the plastic encapsulation block, so that the first clamping portion is provided on the opposite sides of the patch portions of the two patch terminals, and the second clamping portion is provided on the left and right sides of the fixing sheet, and the first clamping portion is adapted and connected with the second clamping portion. In this way, the clamping of the first clamping portion and the second clamping portion can improve the connection firmness between the patch terminal and the plastic encapsulation block, and the two patch terminals can be positioned relative to each other through the fixing sheet, so that positioning is easier during molding and manufacturing, and the manufacturing difficulty is reduced;

[0019] Furthermore, by providing an identification portion for identifying the specifications and sizes of the bridgewire on the upper surface of the plastic encapsulation block, the specification of the bridgewire ignition component can be directly identified by the appearance of the component through the identification portion, thereby ensuring that the product will not be installed incorrectly.

[0020] In order to more clearly illustrate the structural features, technical means and specific purposes and functions achieved by the present invention, the present invention is further 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 schematic diagram of the overall structure of the first embodiment of the utility model;

[0022] Figure 2 It is an exploded view of the first embodiment of the utility model;

[0023] Figure 3 It is another exploded view of the first embodiment of the utility model;

[0024] Figure 4It is a three-dimensional schematic diagram of the overall structure of the second embodiment of the utility model;

[0025] Figure 5 It is an exploded view of the second embodiment of the utility model;

[0026] Figure 6 It is another exploded view of the second embodiment of the present utility model.

[0027] Description of the accompanying drawings:

[0028] 10. Bridge wire 20. Plastic sealing block

[0029] 30. SMD terminal 31. SMD part

[0030] 32. Connecting part 33. Fixing part

[0031] 34. Snap-fit ​​convex part 35. Notch

[0032] 40. Fixing plate 41. Snap-fit ​​groove

[0033] 50. Insertion portion 51. Bending portion

[0034] 52. Extension. DETAILED DESCRIPTION

[0035] Please refer to Figures 1 to 6 As shown, it shows the specific structure of two embodiments of the utility model; wherein, Figures 1 to 3 The specific structure of the first embodiment is shown. Figures 4 to 6 The specific structure of the second embodiment is shown.

[0036] like Figures 1 to 3As shown, in Example 1, a novel tensile-resistant electronic detonator patch ignition bridge wire includes a bridge wire 10, a plastic block 20 and two patch terminals 30. The two patch terminals 30 are arranged at a left-right symmetrical spacing. The two patch terminals 30 each include a patch portion 31, a connecting portion 32 and a fixing portion 33 which are integrally connected in sequence from front to back. The left and right ends of the bridge wire 10 are respectively embedded in the corresponding fixing portions 33. The upper end surfaces of the patch portions 31 of the two patch terminals 30 abut against the lower end surface of the plastic block 20, and the connecting portion 32 is exposed on the rear side of the plastic block 20. The lower end of the plastic block 20 is integrally formed with a fixing plate 40, and the lower end surfaces of the patch portion 31, the connecting portion 32 and the fixing plate 40 are flush with each other to avoid affecting the patch assembly. The first clamping part is provided on the opposite side of the patch part 31 of the two patch terminals 30, and the second clamping part is provided on the left and right sides of the fixing plate 40. The first clamping part is adapted to be connected with the second clamping part. There are several first clamping parts, and the several first clamping parts are arranged at a front-to-back spacing. Correspondingly, there are several second clamping parts, and the several second clamping parts are arranged at a front-to-back spacing. The first clamping part is a clamping protrusion 34, and the second clamping part is a clamping groove 41. The clamping protrusion 34 is clamped with the clamping groove 41. In this way, the clamping of the first clamping part and the second clamping part can improve the connection firmness between the patch terminal 30 and the encapsulation block 20, and the two patch terminals 30 can be positioned relative to each other through the fixing plate 40, so that positioning during molding is easier and the manufacturing difficulty is reduced.

[0037] like Figures 1 to 3 As shown, in the first embodiment, the patch parts 31 of the two patch terminals 30 are integrally connected with an insertion part 50 that bends downward and extends. The insertion part 50 is exposed outside the plastic block 20 and extends downward outside the lower end surface of the corresponding patch part 31. In this way, when it is assembled on the PCB board, it can be inserted into the PCB board through the insertion part 50, so that the tensile resistance can be enhanced and the phenomenon of being easily separated by pulling will not occur. Preferably, the insertion part 50 includes a bending part 51 and an extension part 52 integrally connected to the lower end of the bending part 51, and one end of the bending part 51 away from the extension part 52 is integrally connected to the side wall of the corresponding patch part 31, and the extension part 52 extends downward outside the lower end surface of the corresponding patch part 31.

[0038] like Figures 1 to 3As shown, in the first embodiment, the left and right ends of the bridge wire 10 extend out of the corresponding fixing parts 33 respectively, and the part of the bridge wire 10 located between the fixing parts 33 of the two patch terminals 30 extends outward in an arc shape in the direction away from the plastic encapsulation block 20. In this way, the bridge wire 10 can be set to a bent structure, which can enhance the ability of the bridge wire 10 to resist radial impact force, thereby reducing the probability of deformation and breakage of the bridge wire 10 in a non-production state, improving the effective utilization rate of the patch bridge wire 10 in the finished product assembly process, and reducing production losses.

[0039] like Figures 1 to 3 As shown, in the first embodiment, the opposite side walls of the patch parts 31 of the two patch terminals 30 are concavely provided with a plurality of notches 35, and the plurality of notches 35 are arranged at a front-to-back spacing. Here, the notches 35 are used to increase the solder climbing area, so that the solder climbing area can be further increased through the notches 35 when the ignition element is welded and fixed on the electronic detonator control module, thereby enhancing the firmness of the element fixed on the control module.

[0040] And, if Figures 1 to 3 As shown, in the first embodiment, the upper surface of the encapsulation block 20 is provided with an identification portion (not shown in the figure) for identifying the specifications and dimensions of the bridge wire 10. Here, the identification portion is preferably designed as a groove (not shown in the figure), and the specifications and dimensions of the bridge wire 10 are engraved in the groove. For example, if the diameter of the bridge wire is 40 μm, the mark "40" is engraved in the groove, and the specifications of the bridge wire ignition component can be directly identified by the appearance of the component, thereby ensuring that the product will not be installed incorrectly.

[0041] like Figures 4 to 6 As shown, it shows the specific structure of the second embodiment. The basic structure of the second embodiment is the same as that of the first embodiment. The difference between the second embodiment and the first embodiment is that: Figures 1 to 3 As shown, in the first embodiment, the inserting portion 50 is disposed on the front side wall of the patch portion 31 of the two patch terminals 30; Figures 4 to 6 As shown, in the second embodiment, the inserting portion 50 is disposed on opposite side walls of the patch portions 31 of the two patch terminals 30 .

[0042] In summary, the design focus of the utility model is that the patch parts of the two patch terminals are integrally connected with the insertion parts that are bent and extended downward, and the insertion parts are exposed outside the plastic package block and extend downward outside the lower end surface of the corresponding patch part. In this way, when it is assembled on the PCB board, it can be assembled on the PCB board through the insertion part, thereby enhancing its tensile resistance and preventing the phenomenon of being easily separated by pulling. Secondly, a fixing sheet is integrally formed and connected to the lower end of the plastic package block, so that the opposite sides of the patch parts of the two patch terminals are provided with a first clamping part, and the left and right sides of the fixing sheet are A second clamping portion is provided, and the first clamping portion is adapted to be connected with the second clamping portion, so that the clamping connection between the patch terminal and the plastic block can be improved, and the two patch terminals can be positioned relative to each other through the fixing plate, thereby making positioning easier during molding and reducing the difficulty of production; and, an identification portion for identifying the specification and size of the bridge wire is provided on the upper surface of the plastic block, so that the specification of the bridge wire ignition component can be directly identified by the appearance of the component through the identification portion, thereby ensuring that the product will not be installed incorrectly.

[0043] 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 novel tensile electronic detonator patch ignition bridge wire, comprising a bridge wire, a plastic encapsulation block and two patch terminals, the two patch terminals are arranged at a left-right symmetrical spacing, the two patch terminals each comprise a patch portion, a connecting portion and a fixing portion which are sequentially connected from front to back, the left and right ends of the bridge wire are respectively embedded in the corresponding fixing portions, the upper end surfaces of the patch portions of the two patch terminals are in contact with the lower end surface of the plastic encapsulation block, the connecting portion is exposed at the rear side of the plastic encapsulation block, and the characteristics are: The lower end of the encapsulation block is integrally formed with a fixing plate, and first clamping parts are provided on opposite sides of the patch parts of the two patch terminals, and second clamping parts are provided on the left and right sides of the fixing plate, and the first clamping part is adaptively connected to the second clamping part, and the patch parts of the two patch terminals are integrally connected with an insertion part that is bent and extended downward, and the insertion part is exposed outside the encapsulation block and extends downward from the lower end surface of the corresponding patch part.

2. A novel tensile-resistant electronic detonator patch ignition bridge wire according to claim 1, characterized in that: The inserting portion comprises a bending portion and an extending portion integrally connected to the lower end of the bending portion, one end of the bending portion away from the extending portion is integrally connected to the side wall of the corresponding patch portion, and the extending portion extends downwardly out of the lower end surface of the corresponding patch portion.

3. The novel tensile-resistant electronic detonator patch ignition bridge wire according to claim 1 is characterized in that: The inserting portion is arranged on the front side wall of the patch portion of the two patch terminals.

4. The novel tensile-resistant electronic detonator patch ignition bridge wire according to claim 1 is characterized in that: The inserting portion is arranged on the opposite side walls of the patch portions of the two patch terminals.

5. The novel tensile-resistant electronic detonator patch ignition bridge wire according to claim 1 is characterized in that: There are a plurality of first clamping parts, which are arranged at a front-to-back interval. Correspondingly, there are a plurality of second clamping parts, which are arranged at a front-to-back interval.

6. The novel tensile-resistant electronic detonator patch ignition bridge wire according to claim 1 is characterized by: The first clamping portion is a clamping protrusion, the second clamping portion is a clamping groove, and the clamping protrusion is clamped with the clamping groove.

7. The novel tensile-resistant electronic detonator patch ignition bridge wire according to claim 1 is characterized by: The left and right ends of the bridge wire extend out of the corresponding fixing parts respectively, and the part of the bridge wire located between the fixing parts of the two patch terminals extends outward in an arc shape in a direction away from the plastic encapsulation block.

8. The novel tensile-resistant electronic detonator patch ignition bridge wire according to claim 1 is characterized by: The lower end surfaces of the patch portion, the connecting portion and the fixing piece are arranged flush with each other.

9. The novel tensile-resistant electronic detonator patch ignition bridge wire according to claim 1 is characterized by: The opposite side walls of the patch parts of the two patch terminals are both concavely provided with a plurality of notches, and the plurality of notches are arranged at intervals in front and back.

10. The novel tensile-resistant electronic detonator patch ignition bridge wire according to claim 1 is characterized in that: The upper surface of the plastic encapsulation block is provided with an identification portion for identifying the specifications and dimensions of the bridge wire.

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