Riveted silver wire copper busbar with convex locking structure

Abstract

This utility model discloses a riveted silver wire copper busbar with a convex locking structure, including a silver wire with a hook-shaped portion formed by bending along its edge; and a copper busbar with a limiting groove on its surface, into which the hook-shaped portion enters and is limited; wherein, the limiting groove on the same side as the hook-shaped portion includes two parallel straight grooves, a first straight groove and a second straight groove, with a partial straight ridge formed between the first and second straight grooves on the copper busbar; the hook-shaped portion is assembled with the adjacent second straight groove, and the straight ridge has several laterally deformed and skewed protrusions along the length of the limiting groove, the skewed protrusions being skewed towards one side of the second straight groove and contacting the surface of the silver wire. The skewed protrusions of this utility model, which are skewed to one side, can tightly grip the hook-shaped portion of the silver wire, thereby preventing the silver wire from loosening from the copper busbar.

Description

Technical Field

[0001] This utility model relates to the field of electrical connectors, specifically to a riveted silver wire copper busbar with a protrusion locking structure. Background Technology

[0002] In the field of electrical connector manufacturing, copper busbars are a basic conductor because of their excellent conductivity and mechanical strength.

[0003] In addition, to improve the conductivity of specific contacts, silver wires are fixed at predetermined positions on the copper busbar as functional contacts.

[0004] Since silver wire and copper busbar are two different materials, they generally require positioning. One method of fixing them involves machining grooves on the copper busbar that match the size of the silver wire, and then embedding the silver wire into the grooves. This process and its related mold structure are simple and low-cost, but they also have some drawbacks.

[0005] The bonding reliability between silver wires and copper busbars is often insufficient, with the possibility of detachment. Especially during the subsequent insertion process of the copper busbar with riveted silver wires into the plastic mold for insert injection molding, the unstable silver wires can easily loosen from the copper busbar slots due to vibration or external force and fall into the mold cavity. This results in two problems: firstly, loss of the silver wires themselves; and secondly, damage to the mold cavity surface, production line interruption, and impact on overall production efficiency and product quality. Therefore, it is urgent to improve the bonding performance between the silver wires and copper busbars. Utility Model Content

[0006] The problem to be solved by this utility model is to provide a riveted silver wire copper busbar with a convex locking structure.

[0007] To solve the above problems, this utility model provides a riveted silver wire copper busbar with a convex locking structure. To achieve the above objectives, the technical solution adopted by this utility model to solve its technical problems is as follows: A riveted silver wire copper busbar with a convex locking structure includes: a silver wire having a hook-shaped portion formed by bending along its side; and a copper busbar having a limiting groove on its surface, wherein the hook-shaped portion enters the limiting groove and is limited; wherein the limiting groove on the same side as the hook-shaped portion includes two parallel straight grooves, a first straight groove and a second straight groove, and a straight ridge is formed between the first straight groove and the second straight groove on the copper busbar, the hook-shaped portion is assembled with the adjacent second straight groove, and the straight ridge has a plurality of oblique protrusions that are laterally deformed and skewed along the length direction of the limiting groove, the oblique protrusions being skewed toward the second straight groove and in contact with the surface of the silver wire.

[0008] As a further improvement of this utility model, the cross-sectional profile of the first straight groove is triangular, the cross-sectional profile of the second straight groove is trapezoidal, and the cross-sectional profile of the straight protrusion is trapezoidal.

[0009] As a further improvement of this utility model, several oblique protrusions on the limiting groove are arranged at equal intervals, and oblique protrusions are provided at both ends of the limiting groove.

[0010] As a further improvement of this utility model, there are two first straight grooves and two second straight grooves, and each straight convex ridge has four oblique protrusions.

[0011] As a further improvement of this utility model, the straight convex ridge has several transverse cutting lines, and two adjacent transverse cutting lines form an oblique protrusion.

[0012] As a further improvement of this utility model, the two sides of the oblique protrusion are respectively a widening recess and a narrowing recess. The widening recess is located in the first straight groove, and the narrowing recess is located in the second straight groove. The width of the widening recess is greater than the width of the narrowing recess.

[0013] As a further improvement of this utility model, the oblique protrusion has an engagement edge facing the silver line, and the engagement edge is a convex ridge with an acute angle at the top.

[0014] As a further improvement of this utility model, the surface of the oblique protrusion has a cutting surface with reduced surface roughness, and one side of the cutting surface is an interlocking edge.

[0015] As a further improvement of this utility model, the silver wire includes a flat plate portion and a hook-shaped portion. The hook-shaped portion is located on both sides of the flat plate portion and is integrally connected to the flat plate portion. The flat plate portion and the hook-shaped portion meet at an obtuse angle.

[0016] As a further improvement of this utility model, the copper busbar includes a first flat plate segment and a second flat plate segment, the first flat plate segment and the second flat plate segment are obtuse angles to each other, and the first flat plate segment and the second flat plate segment are integrally connected by a rounded transition segment; the limiting groove is located in the first flat plate segment, and the second flat plate segment has a through hole.

[0017] The advantages of using the riveted silver wire copper busbar with a convex locking structure of this application are: The horizontally skewed protrusions on the straight ridge directly contact the silver wire surface, forming a mechanical locking structure that effectively restricts the displacement of the silver wire within the limiting groove, preventing it from loosening. The skewed design of the protrusions generates unidirectional resistance after assembly, enhancing the local engagement strength between the hook-shaped part and the limiting groove. Finally, the protrusions are distributed along the length of the limiting groove, ensuring that the locking force is evenly applied to the silver wire surface, improving the overall stability of the connection. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a top view of one embodiment of the present invention; Figure 2 This is a cross-sectional view (AA) of one embodiment of the present invention; Figure 3 This is a partial enlarged view of section B of one embodiment of this utility model; Figure 4 This is a perspective view of one embodiment of the present utility model; Figure 5 This is a partial enlarged view of point C in one embodiment of this utility model; Figure 6 This is a perspective view of one embodiment of the copper busbar of this utility model; Figure 7 This is a partial enlarged view of point D in one embodiment of the copper busbar of this utility model.

[0020] 1-Copper busbar; 101-First flat plate section; 102-Second flat plate section; 103-Rounded corner transition section; 104-Through hole; 2-Limiting groove; 201-First straight groove; 2011-Wide recess; 202-Second straight groove; 2021-Narrow recess; 203-Straight protrusion; 204-Angled protrusion; 2041-Interlocking ridge; 2042-Removed surface; 3-Silver wire; 301-Flat plate section; 302-Hook-shaped section. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to specific embodiments: To achieve the purpose of this utility model, a riveted silver wire copper busbar with a convex locking structure includes: a silver wire 3, which has a hook-shaped portion 302 formed by bending along its side. A copper busbar 1 has a limiting groove 2 on its surface, and the hook-shaped portion 302 enters the limiting groove 2 and is limited therein. The limiting groove 2 on the same side as the hook-shaped portion 302 includes two parallel straight grooves, a first straight groove 201 and a second straight groove 202. A straight ridge 203 is partially formed between the first straight groove 201 and the second straight groove 202 on the copper busbar 1. The hook-shaped portion 302 is assembled with the adjacent second straight groove 202. The straight ridge 203 has several laterally deformed oblique protrusions 204 along the length direction of the limiting groove 2. The oblique protrusions 204 are skewed towards the second straight groove 202 and contact the surface of the silver wire 3.

[0022] The oblique protrusion 204 forms a protrusion locking structure that contacts and limits the contact with the surface of the silver line 3.

[0023] The beneficial effects of adopting the above technical solution are: the inclined protrusion 204 tilts to one side of the second straight groove 202 and contacts the surface of the silver wire 3, forming a mechanical lock. This prevents the silver wire from coming loose from the limiting groove 2, avoiding scratches on the mold cavity surface and interruption of the production line caused by the loose silver wire.

[0024] like Figure 7 As shown, in some other embodiments of this utility model, the cross-sectional profile of the first straight groove 201 is triangular, the cross-sectional profile of the second straight groove 202 is trapezoidal, and the cross-sectional profile of the straight protrusion 203 is trapezoidal.

[0025] In addition, the widths of the first straight groove 201 and the second straight groove 202 gradually decrease from top to bottom, meaning that the cross-sectional profile of the first straight groove 201 is also an inverted triangle, and the cross-sectional profile of the second straight groove 202 is also an inverted trapezoid. The cross-sectional profile of the straight protrusion 203 is a regular trapezoid.

[0026] like Figure 3 , Figure 5 As shown, the inner wall slopes of the first straight groove 201 and the second straight groove 202 on the side facing the silver line 3 are relatively gentle, while the inner wall slopes of the first straight groove 201 and the second straight groove 202 on the side away from the silver line 3 are relatively steep.

[0027] The beneficial effects of adopting the above technical solution are: the triangular cross-section of the first straight groove 201 and the trapezoidal cross-section of the second straight groove 202 are matched with the trapezoidal cross-section of the straight convex ridge 203. The trapezoidal cross-section can be relatively wider, so the second straight groove 202, which can accommodate the edge of the silver wire 3, needs to be wider.

[0028] like Figure 4 , Figure 6 As shown, in some other embodiments of this utility model, a plurality of oblique protrusions 204 on the limiting groove 2 are arranged at equal intervals, and both ends of the limiting groove 2 are provided with oblique protrusions 204.

[0029] The beneficial effect of adopting the above technical solution is that the oblique protrusions 204 are arranged at equal intervals and oblique protrusions 204 are provided at both ends, which can prevent the ends of the silver wire 3 from curling up.

[0030] In some other embodiments of this utility model, there are two first straight grooves 201 and two second straight grooves 202, and each straight ridge 203 has four oblique protrusions 204.

[0031] The beneficial effects of adopting the above technical solution are: the double first straight groove 201 and the double second straight groove 202 cooperate with four straight protrusions 203, each with four oblique protrusions 204, to achieve a symmetrical double locking structure and improve the uniformity and stability of the overall locking.

[0032] like Figure 5 , Figure 7 As shown, in some other embodiments of this utility model, the straight convex ridge 203 has a plurality of transverse cutting lines, and two adjacent transverse cutting lines form an oblique protrusion 204.

[0033] The beneficial effect of adopting the above technical solution is that the transverse cutting line divides the straight convex 203 into independent oblique convex blocks 204, which makes it easier for the local straight convex 203 to be divided, and it is easier for it to be squeezed and deformed to one side.

[0034] like Figure 7 As shown, in some other embodiments of this utility model, the two sides of the oblique protrusion 204 are respectively a widening recess 2011 and a narrowing recess 2021. The widening recess 2011 is located in the first straight groove 201, and the narrowing recess 2021 is located in the second straight groove 202. The width of the widening recess 2011 is greater than the width of the narrowing recess 2021.

[0035] like Figure 7 As shown, the depth of the widened recess 2011 is greater than the depth of the area outside the widened recess 2011 in the first straight groove 201.

[0036] The beneficial effects of adopting the above technical solution are: the difference in width between the widened recess 2011 and the narrowed recess 2021 forms a squeezing guide, which forces the oblique protrusion 204 to tilt in the direction of the narrowed side 202, thereby forming a lateral unidirectional deformation of the oblique protrusion 204. First, it is convenient to narrow the width, thereby clamping the silver wire 3. Second, it is convenient to deform to produce a sharp tip, which is more convenient to limit the silver wire 3.

[0037] like Figure 5 , Figure 7 As shown, in some other embodiments of the present invention, the oblique protrusion 204 has an engagement ridge 2041 facing the silver line 3, and the engagement ridge 2041 is a convex ridge with an acute apex angle.

[0038] like Figure 3 As shown, the angle range corresponding to the apex of the interlocking ridge 2041 is 45° to 50°, preferably 48°.

[0039] The beneficial effect of adopting the above technical solution is that the acute-angled interlocking edge 2041 penetrates the surface of the silver wire 3, and the tensile strength is improved through micro-interlocking.

[0040] like Figure 5 As shown, in some other embodiments of the present invention, the oblique protrusion 204 has a shaving surface 2042 with reduced surface roughness, and one side of the shaving surface 2042 is an engagement ridge 2041.

[0041] The cutting surface 2042 thins out a layer of the oblique protrusion 204, making the local surface of the oblique protrusion 204 shallower.

[0042] The beneficial effects of adopting the above technical solution are: reducing the surface roughness of the oblique protrusion 204, i.e. local fine processing, reducing the sliding friction with the silver wire 3, making the interlocking edge 2041 easier to cut in, which is equivalent to polishing the interlocking edge 2041 to be sharper.

[0043] like Figure 3 As shown, in some other embodiments of the present invention, the silver wire 3 includes a flat plate portion 301 and a hook-shaped portion 302. The hook-shaped portion 302 is located on both sides of the flat plate portion 301. The hook-shaped portion 302 is integrally connected to the flat plate portion 301, and the flat plate portion 301 and the hook-shaped portion 302 are connected at an obtuse angle.

[0044] The beneficial effects of adopting the above technical solution are: the obtuse angle design at the junction of the flat plate portion 301 and the hook-shaped portion 302 avoids stress fracture at the bending point, while providing elastic reset space for the hook-shaped portion 302.

[0045] like Figure 4 As shown, in some other embodiments of this utility model, the copper busbar 1 includes a first flat plate segment 101 and a second flat plate segment 102, which form an obtuse angle with each other and are integrally connected by a rounded transition section 103. A limiting groove 2 is located in the first flat plate segment 101, and the second flat plate segment 102 has a through hole 104.

[0046] In addition, the thickness of copper busbar 1 is greater than the thickness of silver wire 3.

[0047] The beneficial effects of adopting the above technical solution are: the obtuse angle bend of the first plate segment 101 and the rounded corner transition segment 103 of the second plate segment 102 disperses the assembly stress. The through hole 104 facilitates the fixing of the copper busbar to external components.

[0048] The process for riveted silver wire copper busbars with a convex locking structure in this application is as follows: Step 1: A limiting groove 2 is punched on the copper busbar 1 according to the size of the silver wire 3. Step 2: The silver wire 3 is chamfered and bent to form a hook-shaped part 302. Step 3: The hook-shaped part 302 of the silver wire 3 is placed into the limiting groove 2. Step 4: The straight convex edge 203 is cut laterally, and then the straight convex edge 203 is locally laterally extruded and shaped to form an oblique protrusion, i.e., a convex point, thereby fixing the silver wire 3.

[0049] The riveted silver wire copper busbar with the convex locking structure of this application can be tested by experiments. Specifically, the copper busbar 1 with riveted silver wire 3 is subjected to vibration test three times, each time for three minutes. The silver wire 3 on the copper busbar 1 does not fall off, indicating that the riveting yield of silver wire 3 has been improved.

[0050] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. A riveted silver wire copper bar having a bump locking structure, characterized by, include: The silver thread has a hook-shaped section formed by bending along its edge; A copper busbar with a limiting groove on its surface, wherein the hook-shaped part enters the limiting groove and is limited; The limiting groove on the same side as the hook-shaped part includes two parallel straight grooves, a first straight groove and a second straight groove. The copper busbars between the first straight groove and the second straight groove partially form straight protrusions. The hook-shaped part is assembled with the adjacent second straight groove. The straight protrusion has several oblique protrusions that are laterally deformed and skewed along the length of the limiting groove. The oblique protrusions are skewed to one side of the second straight groove and contact the surface of the silver wire.

2. The riveted silver wire copper bar with a convex point locking structure according to claim 1, characterized in that: The cross-sectional profile of the first straight groove is triangular, the cross-sectional profile of the second straight groove is trapezoidal, and the cross-sectional profile of the straight protrusion is trapezoidal.

3. The riveted silver wire copper bar with a convex point locking structure according to claim 1, characterized in that: The limiting groove has several oblique protrusions arranged at equal intervals, and both ends of the limiting groove are equipped with oblique protrusions.

4. The riveted silver wire copper bar with a convex locking structure according to claim 1, characterized in that: There are two of each of the first and second straight grooves, and each straight groove has four oblique protrusions.

5. The riveted silver wire copper bar with a convex locking structure according to claim 1, characterized in that: The straight convex ridge has several transverse cutting lines, and two adjacent transverse cutting lines form an oblique convex block.

6. The riveted silver wire copper bar with a convex locking structure according to claim 1, characterized in that: The oblique protrusion has a widening recess and a narrowing recess on its two sides. The widening recess is located in the first straight groove, and the narrowing recess is located in the second straight groove. The width of the widening recess is greater than the width of the narrowing recess.

7. The riveted silver wire copper bar with a convex locking structure according to claim 1, characterized in that: The oblique protrusion has an engagement edge facing the silver line, and the engagement edge is a convex angular edge with an acute apex angle.

8. The riveted silver wire copper bar with a convex point locking structure according to claim 7, characterized in that: The oblique protrusion has a cutting surface with reduced surface roughness, and one side of the cutting surface is an interlocking edge.

9. The riveted silver wire copper busbar with a protrusion locking structure according to claim 1, characterized in that: The silver wire includes a flat portion and a hook-shaped portion. The hook-shaped portion is located on both sides of the flat portion and is integrally connected to the flat portion. The flat portion and the hook-shaped portion meet at an obtuse angle.

10. The riveted silver wire copper bar with a convex locking structure according to claim 1, characterized in that: The copper busbar includes a first flat plate segment and a second flat plate segment, the first flat plate segment and the second flat plate segment forming an obtuse angle with each other, and the first flat plate segment and the second flat plate segment being integrally connected by a rounded transition section. The limiting groove is located on the first plate segment, and the second plate segment has a through hole.

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