Bridging wire clamp
By designing the spring and pressure block structure of the bridging connector, the waste and schedule impact caused by insufficient lead wire length at the blasting site were solved, achieving stable connection and improved safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-25
- Publication Date
- 2026-03-13
AI Technical Summary
The problem of insufficient lead wire length at the blasting site led to wasted lead wire during wiring and affected the project schedule.
Design a bridging connector, including a lower cover, an upper cover and a spring, to achieve bridging of lead wires through the connecting part of the spring and the pressure block structure, thereby enhancing connection stability and pull-out force.
It enables stable connection of different materials for baseboards in different on-site environments, avoiding baseboard waste and impact on project progress, and improving safety and project efficiency.
Smart Images
Figure CN223992566U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of line card technology, specifically to a bridging line card. Background Technology
[0002] Electronic detonators are electric detonators that use electronic control to control the detonation process. They have a relatively high safety factor and are therefore widely used. Electronic detonators mainly consist of the detonator body, the sub-wire for connecting the detonator body, the wire clamp, and the controller, among which the wire clamp is one of the main components of the electronic detonator.
[0003] During the wiring process of connecting the blasting busbar and lead wire clamps at the blasting site, it often happens that the lead wire length is insufficient. Ordinary terminal blocks cannot meet the pull-out force required to connect two lead wires, posing a safety hazard and rendering them unusable. Therefore, it is necessary to replace them with lead wires with longer lengths to meet the usage requirements. Rewiring not only affects the project progress but also wastes lead wires. Moreover, sometimes there are no blasting modules on site that can meet the lead wire length requirements, which also affects the project progress. Utility Model Content
[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a bridging connector to solve the technical problem of insufficient lead wire length during wiring at blasting sites, which leads to lead wire waste and affects the progress of the project.
[0005] To solve the above-mentioned technical problems, this utility model provides a bridging connector, including a lower cover, two upper covers and two springs. The two springs are disposed inside the lower cover and distributed along the front-back direction. Each spring includes a first connecting part and two second connecting parts connected to the left and right sides of the first connecting part. Each second connecting part is used to connect a core wire. One end of each upper cover is rotatably connected to the middle of the lower cover. The lower cover and the two upper covers are provided with fixing components for fixing the lower cover and the upper covers. The two ends of the lower cover and / or the other end of the two upper covers are provided with channels for the lead wire to pass through. The lower cover is provided with two concave surfaces on the left and right. Each upper cover is provided with a first pressing block. When the upper cover is closed, the first pressing block presses on the lead wire located in the concave surface and causes the lead wire to bend.
[0006] With the above structure, the bridging connector of this utility model has the following advantages: The lead wire to be extended is cut with wire strippers, and the outer sheath of the lead wire to be bridged is peeled off, exposing two core wires in the lead wire. One core wire is connected to a second connection part of one spring, and the other core wire is connected to a second connection part of another spring, with these two second connection parts located on the same side. Another lead wire to be bridged is connected to the other second connection parts of the two springs in the same way. The two core wires of one lead wire are connected to the two core wires of the other lead wire via springs. Afterwards, the two top covers are closed to complete the lead wire bridging, achieving lead wire connectivity. This avoids the waste of lead wires and the impact on project progress caused by replacing lead wires due to insufficient length. It solves the connection problem between lead wires of different materials used in on-site wiring due to different terrain, environment, temperature, specifications, and other factors. Furthermore, the first pressure block, in conjunction with the concave surface, causes the two lead wires inside the lower cover to bend, increasing the pull-out force and ensuring that the pull-out force the lead wires can withstand meets the requirements, thus improving safety.
[0007] As an improvement, each second connection part includes two interconnected connecting pieces, each connecting piece having a first through hole through which the core wire passes; with this structure, after the core wire passes through the first through hole, the first through hole can limit the core wire, preventing bridging failure due to the core wire detaching from the second connection part.
[0008] As an improvement, each connecting piece is provided with a first through groove located below and communicating with the first through hole, and each top cover is provided with a second pressing block. The second pressing block is used to press the core wire into the first through groove when the top cover is closed. With this structure, the core wire is pressed into the first through groove and fixed by the second pressing block, which improves the stability and reliability of the connection between the core wire and the second connecting part and prevents bridging failure due to the core wire detaching from the second connecting part.
[0009] As an improvement, each spring is provided with a guide tube on both the left and right sides, and each guide tube is provided with a second through hole for the core wire to pass through. With this structure, after the core wire passes through the second through hole, the second through hole can limit the core wire and prevent bridging failure due to the core wire detaching from the second connection part.
[0010] As an improvement, each guide tube is provided with a second through groove located below and communicating with the second through hole, and each top cover is provided with a second pressing block. The second pressing block is used to press the core wire into the second through groove when the top cover is closed. With this structure, the core wire is pressed into the second through groove and fixed by the second pressing block, which improves the stability and reliability of the connection between the core wire and the guide tube and prevents bridging failure due to the core wire detaching from the second connection part.
[0011] As an improvement, the first pressure block is a serrated block, which is used to squeeze and puncture the lead wire when the top cover is closed; with this structure, the serrated block puncturing the lead wire can increase the pull-out force of the lead wire and improve the stability and reliability of the lead wire bridging.
[0012] As an improvement, the lower cover has two protrusions located on the left and right sides of the spring. Each protrusion includes a first part, a second part, and a third part from the outside to the inside of the lower cover. The first part is higher than the third part and forms a concave surface. The upper surface of the second part is a slope. The position of the first pressure block corresponds to the third part. With this structure, when the upper cover is closed and the serrated block is pressed down, the lead wire is pressed onto the protrusion to form a Z-shaped structure, which further enhances the pull-out force of the lead wire and improves the stability and reliability of the lead wire bridging.
[0013] As an improvement, each third unit has a limiting groove on its upper surface; with this structure, the lead wire can be pressed into the limiting groove by the serrated block, which improves the stability and reliability of the lead wire bridging.
[0014] As an improvement, a third through groove is provided on both the left and right ends of the lower cover, and a fourth through groove is provided on the other end of each upper cover. Both the third and fourth through grooves are semi-circular and match the shape of the lead wires. When the upper cover is closed, the third and fourth through grooves are closed to form a channel, and the two channels on the left and right are coaxially arranged. With this structure, the two channels on the coaxial arrangement make the two lead wires coaxially arranged as well, avoiding shear force between the two lead wires that could lead to bridging failure.
[0015] As an improvement, the fixing components consist of four snap-fit components on the lower cover and two upper covers. Each upper cover is fixed to the lower cover by two snap-fit components arranged symmetrically front and back. The snap-fit components include a protrusion on the inner sidewall of the upper cover and a locking block on the lower cover. The locking block has a locking groove for the protrusion to engage. This structure improves the stability of the connection between the upper and lower covers and prevents bridging failure due to disengagement. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of the present invention in the state where the lower cover and the upper cover are separated.
[0017] Figure 2 for Figure 1 A magnified view of part A in the middle.
[0018] Figure 3 This is a schematic diagram of the upper cover portion of this utility model.
[0019] Figure 4 This is a cross-sectional view of the snap-fit component in this utility model.
[0020] Figure 5 This is a schematic diagram of the connection between the spring and the core wire in this utility model.
[0021] Reference numerals: 1. Lower cover; 2. Upper cover; 3. Spring; 31. First connecting part; 32. Second connecting part; 321. Connecting piece; 4. Partition; 5. Channel; 6. First through hole; 7. First through groove; 8. Second pressure block; 9. Guide cylinder; 10. Second through hole; 11. Second through groove; 12. First pressure block; 13. Boss; 131. First platform; 132. Second platform; 133. Third platform; 14. Limiting groove; 15. Third through groove; 16. Fourth through groove; 17. Buckle assembly; 171. Protrusion; 172. Locking block; 18. Locking groove; 19. Baffle. Detailed Implementation
[0022] The following is a detailed description of a bridging connector according to the present invention, with reference to the accompanying drawings.
[0023] like Figures 1 to 5 As shown, a bridging connector includes a lower cover 1, two upper covers 2, and two spring contacts 3. The lower cover 1 has a partition 4 inside, which is located in the middle of the lower cover 1 and is arranged in a left-right direction. The two spring contacts 3 are located on the front and rear sides of the partition 4, and the partition 4 separates the two spring contacts 3 to prevent the two spring contacts 3 from contacting and causing a short circuit. The material used for the spring contacts 3 is the same as the spring contact material of the connector in the prior art, and will not be described in detail here.
[0024] like Figure 1 , Figure 2 and Figure 5 As shown, each spring 3 includes a first connecting part 31 and two second connecting parts 32 connected to the left and right sides of the first connecting part 31. Each second connecting part 32 is used to connect a core wire. A baffle 19 is also provided inside the lower cover 1, which is perpendicular to the partition 4. There is a gap between the front and rear ends of the baffle 19 and the front and rear inner walls of the lower cover 1. The first connecting part 31 passes through the gap, so that the two second connecting parts 32 are located on the left and right sides of the baffle 19.
[0025] like Figure 1 As shown, one end of each upper cover 2 is rotatably connected to the middle of the lower cover 1. The left and right upper covers 2 respectively cover the left and right halves of the lower cover 1. The lower cover 1 and the two upper covers 2 are provided with fixing components for fixing the lower cover 1 and the upper covers 2. The two ends of the lower cover 1 and / or the other end of the two upper covers 2 are provided with channels 5 for the lead wires to pass through. That is to say, the channel 5 can be provided only at the two ends of the lower cover 1, or only at the other end of the two upper covers 2, or simultaneously at the two ends of the lower cover 1 and the other end of the two upper covers 2. In this embodiment, the left and right ends of the lower cover 1 are provided with third through grooves 15, and the other end of each upper cover 2 is provided with a fourth through groove 16. The third through groove 15 and the fourth through groove 16 are both semi-circular and match the shape of the lead wires. When the upper cover 2 is closed, the third through groove 15 and the fourth through groove 16 surround to form the channel 5. The left and right channels 5 are coaxially arranged to avoid the two lead wires being misaligned, which would cause shearing force.
[0026] like Figure 2 and Figure 5 As shown, each second connecting part 32 includes two interconnected connecting pieces 321. Each connecting piece 321 has a first through hole 6 for the core wire to pass through. A groove is provided at the bottom of the inner side of the lower cover 1, and each connecting piece 321 is stuck in the groove. Each connecting piece 321 has a first through groove 7 located below the first through hole 6 and communicating with the first through hole 6. Each upper cover 2 has a second pressing block 8, which is used to press the core wire into the first through groove 7 when the upper cover 2 is closed.
[0027] In addition, such as Figure 1 and Figure 2 As shown, each spring 3 has a guide cylinder 9 on its left and right sides, meaning there are a total of four guide cylinders 9 inside the lower cover 1. Each guide cylinder 9 has a second through hole 10 for the core wire to pass through, and each guide cylinder 9 has a second through groove 11 located below and communicating with the second through hole 10. Similarly, when the upper cover 2 is closed, the second pressing block 8 presses the core wire into the second through groove 11. In this embodiment, as... Figure 3 As shown, each top cover 2 is provided with two sets of second pressure blocks 8 along the left and right direction. Each set of second pressure blocks 8 includes two second pressure blocks 8 distributed front and back. The two second pressure blocks 8 in the same set correspond to two spring sheets 3. One set of second pressure blocks 8 presses on the core wire between the two connecting pieces 321, and the other set of second pressure blocks 8 presses on the core wire between the guide cylinder 9 and the spring sheet 3.
[0028] The lower cover 1 has two concave surfaces, left and right. Each upper cover 2 has a first pressing block 12. When the upper cover 2 is closed, the first pressing block 12 presses against the foot line located in the concave surface, causing the foot line to bend. Figure 3 As shown, the first pressure block 12 is a serrated block, which is used to squeeze and puncture the foot line when the upper cover 2 is closed.
[0029] like Figure 1 As shown, the lower cover 1 has two protrusions 13 located on the left and right sides of the spring 3. Each protrusion 13 includes a first platform 131, a second platform 132, and a third platform 133 from the outside to the inside of the lower cover 1. The first platform 131 is higher than the third platform 133, forming a concave surface. The upper surface of the second platform 132 is inclined, serving as a transition between the first platform 131 and the third platform 133. The position of the first pressing block 12 corresponds to the third platform 133. That is, when the upper cover 2 is closed, the first pressing block 12 presses on the foot line of the third platform 133, thereby forming a Z-shaped structure on the foot line and increasing the pulling force. In this embodiment, the first platform 131 is directly set from the end of the lower cover 1 inward. Therefore, the third through groove 15 also extends to the first platform 131. In addition, each third platform 133 has a limiting groove 14 on its upper surface.
[0030] Cut the lead wire that needs to be extended using wire strippers, and then peel off the outer sheath of the lead wire end that needs to be bridged, exposing the two core wires in the lead wire. One core wire passes through the second through hole 10 of one of the guide cylinders 9 and the first through hole 6 of the two connecting pieces 321 of one of the spring pieces 3. The other core wire passes through the second through hole 10 of the other guide cylinder 9 and the first through hole 6 of the two connecting pieces 321 of the other spring piece 3. The lead wire is located on the boss 13. Connect the other lead wire that needs to be bridged to the other side in the same way. The two core wires of one lead wire are connected to the spring piece 3 and... The two core wires of the other lead wire are connected accordingly. Then, the two top covers 2 are closed to complete the lead wire bridging and achieve lead wire connection. This avoids the waste of lead wires and the impact on project progress caused by replacing lead wires due to insufficient lead wire length. It solves the connection problem between lead wires of different materials used in the field wiring process due to different factors such as terrain, environment, temperature and specifications. Each second pressure block 8 and the first pressure block 12 presses on the corresponding core wire and lead wire. The first pressure block 12 pierces the lead wire and makes the lead wire form a Z-shaped structure to increase the pull force, which can reach 45 kg.
[0031] The fixing components consist of four snap-fit components 17 located on the lower cover 1 and the two upper covers 2. Each upper cover 2 is fixed to the lower cover 1 by two snap-fit components 17 arranged symmetrically front and back. Figure 4 As shown, the buckle assembly 17 includes a protrusion 171 on the inner side wall of the upper cover 2 and a locking block 172 on the lower cover 1. The locking block 172 is provided with a locking groove 18 for the protrusion 171 to be engaged. The upper end surface of the locking block 172 is provided with a guide slope. When the upper cover 2 is closed, the lower end of the protrusion 171 abuts against the guide slope, causing the locking block 172 to deform. As the upper cover 2 rotates, the protrusion 171 is engaged in the locking groove 18.
[0032] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above-described embodiment. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
Claims
1. A bridge line card, comprising: The utility model relates to a two-way spring switch, including lower cover (1), two upper covers (2) and two reed (3), two reed (3) are located in lower cover (1) and distribute along front and back direction, every reed (3) includes first connecting part (31) and two second connecting parts (32) connected in first connecting part (31) left and right sides, every second connecting part (32) is used for connecting a core wire, every upper cover (2) one end is rotatably connected with lower cover (1) middle part, lower cover (1) and two upper covers (2) are equipped with the fixed assembly for fixing lower cover (1) and upper cover (2), lower cover (1) both ends and / or two upper covers (2) other end are equipped with the passage (5) for the through of foot wire, lower cover (1) is equipped with left and right two concave surfaces, every upper cover (2) is equipped with first pressing block (12), when upper cover (2) is closed, first pressing block (12) is pressed on the foot wire in concave surface and makes the foot wire bend.
2. The bridge line card of claim 1, wherein, Every second connecting part (32) includes two mutually connected connecting sheets (321), and every connecting sheet (321) is provided with a first through hole (6) for the core wire to pass through.
3. The bridge line card of claim 2, wherein, A first through groove (7) is arranged on each connecting sheet (321) below and in communication with the first through hole (6), and each upper cover (2) is provided with a second pressing block (8) for pressing the core wire into the first through groove (7) when the upper cover (2) is closed.
4. The bridge line card of claim 1, wherein, Each reed (3) is provided with a guide cylinder (9) on the left and right sides, and each guide cylinder (9) is provided with a second through hole (10) for the core wire to pass through.
5. The bridge line card of claim 4, wherein, A second through groove (11) is arranged on each guide cylinder (9) below and in communication with the second through hole (10), and each upper cover (2) is provided with a second pressing block (8) for pressing the core wire into the second through groove (11) when the upper cover (2) is closed.
6. The bridge line card of claim 1, wherein, The first pressing block (12) is a sawtooth block, which is used for extruding and piercing the foot wire when the upper cover (2) is closed.
7. The bridge line card of claim 1, wherein, Two bosses (13) are arranged in the lower cover (1) on the left and right sides of the reed (3), each boss (13) sequentially includes a first boss portion (131), a second boss portion (132) and a third boss portion (133) from the outside to the inside of the lower cover (1), the height of the first boss portion (131) is higher than that of the third boss portion (133) to form the concave surface, the upper end surface of the second boss portion (132) is an inclined surface, and the position of the first pressing block (12) corresponds to the third boss portion (133).
8. The bridge line card of claim 7, wherein, A limiting groove (14) is arranged on the upper end surface of each third boss portion (133).
9. The bridge line card of claim 1, wherein, The lower cover (1) is provided with third through-slots (15) at both ends, each of the upper covers (2) is provided with fourth through-slots (16) at the other end, the third through-slots (15) and the fourth through-slots (16) are semicircular shapes matching the shape of the foot line, when the upper cover (2) is closed, the third through-slots (15) and the fourth through-slots (16) form the channel (5), and the two channels (5) are coaxially arranged.
10. The bridge line card of claim 1, wherein, The fixing assembly is four buckle assemblies (17) provided on the lower cover (1) and the two upper covers (2), each of the upper covers (2) and the lower cover (1) is fixed by two buckle assemblies (17) symmetrically arranged front and back, the buckle assembly (17) comprises a protrusion (171) provided on the inner side wall of the upper cover (2) and a clamping block (172) provided on the lower cover (1), and the clamping block (172) is provided with a clamping groove (18) for clamping the protrusion (171).