Connecting piece of plug connector

Abstract

The utility model relates to the technical field of plug connectors, and discloses a plug connector connecting piece which comprises a conductive piece, the conductive piece comprises a connecting part, a plugging part and a fixing part, the plugging part is used for being plugged with a charging socket, the fixing part is used for being integrally formed with a shell, and the connecting part is used for being electrically connected with a cable core wire. A connecting hole used for being connected with a cable core wire is formed in the connecting part, a first limiting convex edge and a second limiting convex edge are arranged on the inner wall of the end, away from the fixing part, of the connecting hole in the hole opening direction of the connecting hole, and the first limiting convex edge and the second limiting convex edge are oppositely arranged. The first limiting convex edge is bent towards the second limiting convex edge, and the first limiting convex edge and the second limiting convex edge form a wire bunching cavity for clamping a cable core wire, so that when the exposed cable core wire is thinner and less, the end part of the first limiting convex edge and the surface of the second limiting convex edge respectively abut against two sides of the cable core wire, and a gap between the first limiting convex edge and the second limiting convex edge is shortened; the cable core wire is prevented from abutting against the connecting part and loosening during welding, and the cable core wire and the connecting part are welded and fixed conveniently.

Description

Technical Field

[0001] This application relates to the technical field of connectors, and more particularly to connector connecting pieces. Background Technology

[0002] To improve the flexibility and convenience of using power tools and enable them to operate normally in environments without an external power source, the industry has gradually begun to install batteries inside power tools. By inserting the battery connector into the charging socket inside the power tool, the power tool can be charged.

[0003] In the manufacturing process of power tools, the assembly of power tool connectors is a crucial step, as shown in the attached document. Figure 1 As shown, power tool connectors typically include a housing 2 and multiple conductive plates 1. To assemble the housing 2 and the conductive plates 1, the conductive plates 1 are usually placed into the injection mold cavity of the housing 2 during the injection molding process of the housing 2, so that they are processed and formed together with the housing 2. One side of the conductive plate 1 can be inserted into the corresponding charging socket, and the other side has a connection hole 121 for cable to pass through and be soldered.

[0004] Conventional bonding holes are round or oblong, with the same width at both ends. When soldering thinner and fewer copper wires, the copper wire tends to stick close to the inner wall of one side of the bonding hole, causing the solder joint to shift to that side, thus reducing the soldering effect between the core wire and the bonding hole. Utility Model Content

[0005] To improve the welding effect between the core wire and the bonding hole, a plug-in connector is provided.

[0006] The above-mentioned objective of this application is achieved through the following technical solution:

[0007] A connector includes a conductive sheet, which comprises a connecting portion, a plug-in portion, and a fixing portion. The plug-in portion is used to plug into a charging socket, the fixing portion is used to be integrally formed with a housing, and the connecting portion is used to electrically connect with a cable core. The connecting portion has a connecting hole for connecting with the cable core. The inner wall of the connecting hole away from the fixing portion is stamped with a first limiting protrusion and a second limiting protrusion along its own opening direction. The first limiting protrusion and the second limiting protrusion are arranged opposite to each other, and the first limiting protrusion is bent toward the second limiting protrusion to form a cable bundle cavity for clamping the cable core.

[0008] By adopting the above technical solution, when electrically connecting the cable core to the connector, the operator first strips the cable insulation to expose the internal cable core, overlaps the cable core on the outer surface of the connector, and fixes it by welding. The first limiting protrusion is pressed towards the second limiting protrusion, reducing the distance between their ends. When the exposed cable core is thin and few, the cable core can be placed at one end of the connector hole without the punched limiting protrusion, and then moved away from the fixing part to the cable bundle cavity formed by the first and second limiting protrusions. At this time, the end of the first limiting protrusion and the surface of the second limiting protrusion respectively abut against the two sides of the cable core, shortening the gap between them, preventing the cable core from loosening during welding, facilitating the welding and fixing of the cable core to the connector, and improving the electrical connection performance between the cable core and the connector.

[0009] Preferably, the cross-section of the connecting hole along its own opening direction is waist-shaped.

[0010] By adopting the above technical solution, the cable core wire can not only keep in contact with the first limiting protrusion and the second limiting protrusion, but also keep in contact with the arc-shaped edge of the waist-shaped connecting hole, thereby increasing the contact area between the connecting hole and the cable core wire and ensuring a stable electrical connection between the cable core wire and the connecting part.

[0011] Preferably, the fixing part has several fixing holes.

[0012] By adopting the above technical solution, when molten plastic particles are poured into the mold cavity for outer shell injection molding, the fixing part of the conductive sheet is inserted into the mold cavity, and the assembly of the conductive sheet and the outer shell is completed simultaneously. The molten particles will penetrate the fixing hole during the pouring into the mold cavity, and after cooling, they can further fix the conductive sheet and the outer shell, reducing the possibility of loosening of the assembly of the conductive sheet and the outer shell.

[0013] Preferably, the outer periphery of the fixing hole is stamped with a fixing protrusion along its own opening direction, and the fixing protrusion is arranged opposite to the second limiting protrusion.

[0014] By adopting the above technical solution, the fixed convex edge keeps adjacent conductive sheets separated, preventing them from sticking together on their sides during electroplating. This allows the electroplating solution to effectively plate all sides of the conductive sheets, improving their corrosion resistance and thus enhancing the overall quality and service life of the power tool connectors.

[0015] Preferably, the cross-sectional opening size of the connecting hole gradually decreases in the direction away from the fixing part.

[0016] By adopting the above technical solution, when the exposed cable core is thin and few, the cable core can be placed on the side with a larger opening in the cross-section of the connection hole, and then moved away from the fixing part, so that the cable core moves to the side with a smaller opening in the cross-section of the connection hole and abuts against the inner wall there, thereby reducing the gap between the cable core and the inner wall of the connection hole and reducing the possibility of the cable core loosening due to contact with the connection part during welding.

[0017] Preferably, the cross-section of the connecting hole along its own opening direction is pear-shaped.

[0018] By adopting the above technical solution, when welding thicker and more numerous cable cores, the cable cores can be welded to the side with the larger opening of the connection hole cross-section; when welding thinner and fewer cable cores, the cable cores can be welded to the side with the smaller opening of the connection hole cross-section, reducing the gap between the cable cores and the inner wall of the connection hole, so that cable cores of different diameters can all abut against the inner wall of the connection hole, reducing the possibility of loosening when the cable cores are welded and fixed to the connection part, and improving the welding and fixing effect of the cable cores and the connection part.

[0019] Preferably, the inner wall of the connecting hole is provided with a connecting protrusion along its own opening direction.

[0020] By adopting the above technical solution, the connecting protrusion increases the welding area between the cable core and the connecting hole, and can bear the solder when welding the cable core, thereby improving the welding effect between the cable core and the connecting hole.

[0021] Preferably, the connecting part has a first wire hole connected to the connecting hole along the opening direction of the connecting hole, and the distance between the two opposite inner walls of the first wire hole is smaller than the distance between the two opposite inner walls of the connecting hole.

[0022] By adopting the above technical solution, when welding thinner and fewer copper wires, since the distance between the two opposite inner walls of the first wire bundling hole is smaller than the distance between the two opposite inner walls of the connecting hole, the copper wire in the connecting hole can be moved into the first wire bundling hole. The first wire bundling hole further bundles the cable core wires. The worker then welds the copper wires to the two opposite inner walls of the first wire bundling hole, avoiding the cable core wires from touching and loosening during welding. This facilitates the welding and fixing of the cable core wires to the connecting part, and improves the electrical connection performance between the cable core wires and the connecting part.

[0023] Preferably, the connecting part has a second wire hole that communicates with the connecting hole along the opening direction of the connecting hole, and the distance between the two opposite inner walls in the second wire hole is smaller than the distance between the two opposite inner walls in the connecting hole, while the distance between the two opposite inner walls in the second wire hole is larger than the distance between the two opposite inner walls in the first wire hole.

[0024] By adopting the above technical solution, the second wire harness hole can weld thicker and larger cable cores onto the two opposite inner walls of the connection hole; when welding medium-sized cable cores, they can be moved into the second wire harness hole and welded onto the two opposite inner walls; when welding thinner and smaller cable cores, they can be moved into the first wire harness hole and welded onto the two opposite inner walls, so that cable cores of different diameters can be stably welded to the connection part.

[0025] Preferably, the inner walls of the connecting hole, the first wire hole, and the second wire hole are provided with supporting protrusions along their own opening direction.

[0026] By adopting the above technical solution, cable cores of different diameters are placed in the connection hole, the first bundle hole and the second bundle hole respectively. The supporting protrusion increases the contact area between the cable core and the inner wall of the connection hole, the first bundle hole and the second bundle hole. When welding the cable core, the supporting protrusion can provide more solder joints, thereby improving the welding effect between the cable core and the connection hole.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. The first limiting protrusion bends toward the second limiting protrusion, thereby reducing the distance between the end of the first limiting protrusion and the surface of the second limiting protrusion. The end of the first limiting protrusion and the surface of the second limiting protrusion respectively abut against both sides of the cable core, preventing the cable core from loosening due to contact with the connection part during welding, and facilitating the welding and fixing of the cable core to the connection part.

[0029] 2. The pear-shaped connector hole design allows for welding of thicker and more numerous cable cores to the side with a larger opening in the connector hole cross-section. Conversely, when welding thinner and fewer cable cores, the cable cores can be welded to the side with a smaller opening in the connector hole cross-section. This reduces the gap between the cable cores and the inner wall of the connector hole, ensuring that cable cores of different diameters can contact the inner wall of the connector hole.

[0030] 3. The fixed protrusion and the second limiting protrusion are set opposite to each other to keep adjacent conductive sheets separated, preventing them from sticking together on their sides during electroplating, so that the electroplating solution can effectively electroplat all sides of the conductive sheets and improve the corrosion resistance of the conductive sheets. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of an explosion between the conductive sheet and the outer casing in the prior art;

[0032] Figure 2 This is a schematic diagram of the explosion between the conductive sheet and the outer shell in Example 1;

[0033] Figure 3 This is a three-dimensional structural diagram of the conductive sheet in Example 1;

[0034] Figure 4 This is a three-dimensional structural diagram of the conductive sheet in Example 2;

[0035] Figure 5 This is a three-dimensional structural diagram of the conductive sheet in Example 3.

[0036] Reference numerals: 1. Conductive sheet; 11. Insertion part; 12. Connecting part; 121. Connecting hole; 122. First limiting protrusion; 123. Second limiting protrusion; 124. Cable bundle cavity; 125. Connecting protrusion; 126. First cable bundle hole; 127. Second cable bundle hole; 128. Supporting protrusion; 13. Fixing part; 131. Fixing hole; 132. Fixing protrusion; 2. Outer shell. Detailed Implementation Example

[0037] As attached Figure 2 and attached Figure 3 As shown, a connector on a plug includes a conductive sheet 1, which includes an integrally formed plug portion 11, a connecting portion 12, and a fixing portion 13.

[0038] The plug-in part 11 is fixed to one side of the fixing part 13. The plug-in part 11 is used to plug into the charging socket of the power tool. Its shape and size are usually designed according to the specifications of the charging socket.

[0039] The connecting part 12 is perpendicularly fixed to one side of the fixing part 13. The connecting part 12 is used to electrically connect with the cable core wire in the power tool. The connecting part 12 has a through connecting hole 121. The cable core wire can pass through the connecting hole 121 and be electrically connected to the connecting part 12 by welding. The cross-sectional shape of the connecting hole 121 can be square, round or waist-shaped. Here, the cross-sectional shape of the connecting hole 121 is waist-shaped. The waist-shaped connecting hole 121 has a certain length and width. Its two ends are arc-shaped and the middle part is a straight segment. The waist-shaped connecting hole 121 facilitates the movement of the cable core wire after it is inserted into the connecting hole 121.

[0040] The inner wall of the connecting hole 121 away from the fixing part 13 is provided with a first limiting protrusion 122 and a second limiting protrusion 123 along its own opening direction. The first limiting protrusion 122 and the second limiting protrusion 123 are tightly connected to the inner wall of the connecting hole 121 by a stamping process. The first limiting protrusion 122 and the second limiting protrusion 123 are arranged opposite to each other, and the first limiting protrusion 122 is bent toward the second limiting protrusion 123 and forms a wire harness cavity 124 for the cable core wire to be snapped in.

[0041] The first limiting protrusion 122 is pressed toward the second limiting protrusion 123, reducing the distance between their ends. When the exposed cable core is thin and few, the cable core can be placed at one end of the un-stamped limiting protrusion of the connecting hole 121, and then moved away from the fixing part 13 to the cable bundle cavity 124 formed by the first limiting protrusion 122 and the second limiting protrusion 123. At this time, the outer wall of the cable core is in contact with the arc edge of the waist-shaped connecting hole 121, the end of the first limiting protrusion 122, and the surface of the second limiting protrusion 123, respectively, to prevent the cable core from contacting and loosening with the connecting part 12 during welding, and to facilitate the welding and fixing of the cable core to the connecting part 12.

[0042] The fixing part 13 is L-shaped. The two side walls of the fixing part 13 are injection molded and attached to the plastic shell 2. The fixing part 13 has several through fixing holes 131. There are three fixing holes 131 here. One fixing hole 131 is located in the middle of the vertical side, and the other two fixing holes 131 are located at the bottom of the horizontal side. The shape of the fixing holes 131 can be circular, square, etc. When the molten plastic particles are poured into the mold cavity to injection mold the shell 2 and the conductive sheet 1, the particles fill the fixing holes 131. After cooling, several conductive sheets 1 are further fixedly connected to the fixing part 13 to reduce the risk of loosening of the conductive sheet 1 and the shell 2 during assembly.

[0043] A fixing protrusion 132 is stamped around the bottom fixing hole 131 along its own opening direction, and the fixing protrusion 132 and the second limiting protrusion 123 are arranged opposite to each other in the stamping direction. The fixing protrusion 132 can make the fixing part 13 of the adjacent conductive sheet 1 have a gap, and the second limiting protrusion 123 can make the connecting part 12 of the adjacent conductive sheet 1 have a gap. The arrangement of the fixing protrusion 132 and the second limiting protrusion 123 keeps the adjacent conductive sheet 1 separated, preventing the sides of the adjacent conductive sheet 1 from sticking together during electroplating, so that the electroplating solution can effectively electroplat all sides of the conductive sheet 1. Example

[0044] As attached Figure 4 As shown, this second embodiment is an improvement on the connecting hole 121 based on the first embodiment. The other structures are the same as those in the first embodiment, and will not be described in detail here.

[0045] The cross-sectional opening size of the connecting hole 121 gradually decreases in the direction away from the fixing part 13. Here, the cross-section of the connecting hole 121 along its own opening direction is pear-shaped. When welding thicker and more numerous cable cores, the cable cores can be welded to the side with the larger cross-sectional opening of the pear-shaped connecting hole 121; when welding thinner and fewer cable cores, the cable cores can be welded to the side with the smaller cross-sectional opening of the pear-shaped connecting hole 121. This reduces the gap between the cable cores and the inner wall of the connecting hole 121, so that cable cores of different diameters can contact the inner wall of the connecting hole 121, reducing the possibility of loosening when the cable cores are welded and fixed to the connecting part 12, and improving the welding and fixing effect of the cable cores and the connecting part 12.

[0046] The inner wall of the connecting hole 121 is provided with a connecting protrusion 125 along its own opening direction. The connecting protrusion 125 is connected to the inner wall of the connecting hole 121 by a stamping process. The connecting protrusion 125 has a pear-shaped sheet structure. When the cable core wire is welded to the pear-shaped connecting hole 121, the connecting protrusion 125 can provide additional support for the cable core wire, increase the welding area between the cable core wire and the pear-shaped connecting hole 121, and improve the welding effect between the cable core wire and the connecting hole 121. Example

[0047] As attached Figure 5 As shown, this third embodiment is an improvement on the connecting hole 121 based on the first embodiment. The other structures are the same as those in the first embodiment, and will not be described in detail here.

[0048] The connecting hole 121 is oblong in shape. The connecting part 12 has a first wire harness hole 126 and a second wire harness hole 127 connected to the connecting hole 121 along the opening direction of the connecting hole 121. The first wire harness hole 126 and the second wire harness hole 127 are located at the end of the connecting hole 121 away from the fixing part 13. The first wire harness hole 126 and the second wire harness hole 127 are arranged adjacent to each other, and the distance between the two opposing inner walls of the first wire harness hole 126 and the second wire harness hole 127 is smaller than the distance between the two opposing inner walls of the oblong connecting hole 121. The distance between the two opposing inner walls of the second wire harness hole 127 is smaller than the distance between the two opposing inner walls of the second wire harness hole 127. The spacing between the wires is greater than the spacing between the two opposite inner walls inside the first wire bundle hole 126. The first wire bundle hole 126 and the second wire bundle hole 127 can be used to weld the cable core wire bundles. When welding thicker and larger cable core wires, they can be welded to the two opposite inner walls inside the waist-shaped connecting hole 121. When welding medium-sized cable core wires, they can be moved to the second wire bundle hole 127 and welded to the two opposite inner walls. When welding thinner and smaller cable core wires, they can be moved to the first wire bundle hole 126 and welded to the two opposite inner walls, so that cable core wires of different diameters can be stably welded to the connecting part 12.

[0049] The inner walls of the connecting hole 121, the first wire bundle hole 126, and the second wire bundle hole 127 are provided with supporting protrusions 128 along their opening direction. The supporting protrusions 128 are connected to the inner walls of the connecting hole 121, the first wire bundle hole 126, and the second wire bundle hole 127 respectively by a stamping process. Cable cores of different diameters are placed in the connecting hole 121, the first wire bundle hole 126, and the second wire bundle hole 127 respectively. The supporting protrusions 128 increase the contact area between the cable cores and the inner walls of the connecting hole 121, the first wire bundle hole 126, and the second wire bundle hole 127. When welding the cable cores, the supporting protrusions 128 can provide more solder joints, thereby improving the welding effect between the cable cores and the connecting hole 121.

[0050] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of protection claimed in this application.

Claims

1. A connector piece, comprising a conductive sheet (1), the conductive sheet (1) comprising a connecting portion (12), a plugging portion (11), and a fixing portion (13), the plugging portion (11) being for plugging into a charging socket, the fixing portion (13) being integrally formed with a housing (2), and the connecting portion (12) being for electrical connection with a cable core wire, characterized in that, The connecting hole (121) is provided with a first limiting convex edge (122) and a second limiting convex edge (123) on the inner wall of the end away from the fixed part (13) along the hole opening direction of the connecting hole (121), the first limiting convex edge (122) is arranged opposite to the second limiting convex edge (123), and the first limiting convex edge (122) is bent towards the second limiting convex edge (123) and forms a wire binding cavity (124) with the second limiting convex edge (123) for clamping the cable core wire.

2. A patch cord connector according to claim 1, wherein, The cross section of the connecting hole (121) along the hole opening direction is in a pear shape.

3. A patch cord according to claim 1, wherein, The fixed part (13) is provided with a plurality of fixed holes (131).

4. A patch cord according to claim 3, wherein, The fixed hole (131) is provided with a fixed convex edge (132) along the hole opening direction of the outer periphery, and the fixed convex edge (132) is arranged opposite to the second limiting convex edge (123).

5. A patch cord according to claim 1, wherein, The cross section of the connecting hole (121) gradually reduces in size along the direction away from the fixed part (13).

6. A patch cord according to claim 5, wherein, The cross section of the connecting hole (121) along the hole opening direction is in a pear shape.

7. A patch cord according to claim 5, wherein, The connecting hole (121) is provided with a connecting convex edge (125) along the hole opening direction of the inner wall.

8. A patch cord connector according to claim 1, wherein, The connecting part (12) is provided with a first wire binding hole (126) connected with the connecting hole (121) along the hole opening direction of the connecting hole (121), and the distance between the two opposite inner walls in the first wire binding hole (126) is smaller than the distance between the two opposite inner walls in the connecting hole (121).

9. A patch cord according to claim 8, wherein, The connecting part (12) is provided with a second wire binding hole (127) connected with the connecting hole (121) along the hole opening direction of the connecting hole (121), and the distance between the two opposite inner walls in the second wire binding hole (127) is smaller than the distance between the two opposite inner walls in the connecting hole (121), and the distance between the two opposite inner walls in the second wire binding hole (127) is greater than the distance between the two opposite inner walls in the first wire binding hole (126).

10. A patch cord according to claim 9, wherein, The inner walls of the connecting hole (121), the first wire binding hole (126) and the second wire binding hole (127) are provided with a supporting convex edge (128) along the hole opening direction.

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