Breakpoint connection terminal and pressing device thereof

Abstract

The utility model relates to the technical field of wire connection, in particular to a breakpoint connection terminal and a pressing device thereof, which comprises a substrate, one end of the substrate is provided with a first joint, the other end of the substrate is provided with a second joint, the cross sections of the first joint and the second joint are U-shaped, and a copper wire is pressed on the U-shaped concave side of the first joint. The first connector is provided with an anti-disengaging piece which is used for preventing the copper wire from disengaging from the first connector, the aluminum wire is pressed on the U-shaped concave side of the second connector, and the second connector is provided with an anchoring piece which is used for improving the pressing strength of the aluminum wire. The utility model has the effects of improving the connection strength of the copper wire and the aluminum wire and reducing the production cost of the vehicle body.

Description

Technical Field

[0001] This application relates to the field of wire connection technology, and in particular to a breakpoint connection terminal and its crimping device. Background Technology

[0002] In power systems, wire connection technology is used for the transmission of electricity and electrical signals. Wires connect the two devices at both ends, locking the wires to the devices to enable signal transmission.

[0003] In the traditional automotive electrical connections, the terminals and conductors are made of copper or copper alloys. However, due to the high cost and weight of copper, the manufacturing cost of automobiles increases, and the weight of the vehicle body increases, which limits the development of lightweight vehicles. Therefore, some wires are replaced with aluminum or aluminum alloys. However, because copper and aluminum have significantly different conductivity, when copper and aluminum are directly connected, an electrochemical reaction will occur between them under the influence of air and water. Aluminum is prone to corrosion, which leads to increased resistance in the connection area and can easily cause serious consequences in electrical connections.

[0004] Chinese Patent CN116937192A discloses an improved structure for a wire connection terminal, including a housing body with a recess and a wire insertion port on its surface; a conductive module connected to the wire insertion port, the conductive module having at least one guide groove; at least one knob pivotally mounted in the recess of the housing body via a first shaft, the knob having a push-pull portion exposed outside the housing body and a movable portion protruding toward the conductive module, the movable portion having a pin that can extend into the guide groove and be freely guided; and at least one abutment spring pivotally mounted between the knob and the conductive module, and pivotable by the knob.

[0005] While the aforementioned technology can achieve connections between different wires during use, its structure is relatively complex, which increases the manufacturing cost of the vehicle and has its shortcomings. Utility Model Content

[0006] To address the issue that the aforementioned connection terminal structure increases vehicle production costs, this application provides a breakpoint connection terminal and its pressing device.

[0007] Firstly, the breakpoint connection terminal provided in this application adopts the following technical solution:

[0008] A breakpoint connection terminal includes a substrate, a first connector at one end of the substrate, and a second connector at the other end of the substrate. Both the first connector and the second connector have U-shaped cross-sections. A copper wire is pressed onto the concave side of the U-shape of the first connector. An anti-detachment component is provided on the first connector to prevent the copper wire from detaching from the first connector. An aluminum wire is pressed onto the concave side of the U-shape of the second connector. An anchor is provided on the second connector to improve the pressing strength of the aluminum wire.

[0009] By adopting the above technical solution, workers use a pressing device to press copper wires onto the first connector and aluminum wires onto the second connector. At the same time, anti-detachment components prevent the copper wires from detaching from the first connector, and anchors increase the pressing strength between the aluminum wires and the second connector, thereby completing the connection between the copper wires and aluminum wires. Since the substrate, the first connector, and the second connector are relatively small in weight and low in cost, the production cost of the vehicle body is reduced. At the same time, it is conducive to the lightweight development of the vehicle body.

[0010] Optionally, the anti-detachment component includes a plurality of protrusions disposed on the first connector, the plurality of protrusions being arranged on the concave side of the first connector, and the plurality of protrusions being arranged along the direction from the first connector to the second connector.

[0011] By adopting the above technical solution, when the first connector is pressed onto the copper wire, the protrusion will deform and squeeze the copper wire, so that a cross groove is formed between the surface of the copper wire and the protrusion, thereby preventing the copper wire from detaching from the first connector.

[0012] Optionally, the anchor includes a plurality of anchoring teeth disposed on both ends of the U-shape of the second joint. When the two ends of the U-shape of the second joint are pressed against the ends of the aluminum wire, the anchoring teeth on both ends of the U-shape of the second joint are arranged in an alternating manner.

[0013] By adopting the above technical solution, when the second connector is pressed, the anchoring teeth on both ends of the U-shape of the second connector will interlock and mesh with each other, thereby increasing the pressing strength between the second connector and the aluminum wire and reducing the possibility of the aluminum wire accidentally detaching from the second connector.

[0014] Optionally, the substrate, the first connector, and the second connector are integrally formed.

[0015] By adopting the above technical solution, it is beneficial to reduce the production cost of break-point connection terminals.

[0016] Secondly, this application provides a crimping device for a break-point connection terminal, which adopts the following technical solution:

[0017] A crimping device for a breakpoint connection terminal includes a processing table, a limiting seat on the processing table, wire clips at both ends of the limiting seat, the wire clips having a C-shaped cross-section, and wires being clipped into the C-shaped grooves of the wire clips. The limiting seat has a slot for placing the breakpoint connection terminal. A pressure plate is slidably disposed on the processing table, and a pressure block is disposed on the pressure plate for crimping the breakpoint connection terminal onto the limiting seat. A crimping component is disposed on the processing table to drive the pressure plate to slide.

[0018] By adopting the above technical solution, the worker first places the break connection terminal in the slot of the limit seat, then fixes the copper wire and aluminum wire on the processing table with wire clamps. At the same time, the ends of the copper wire and aluminum wire are placed on the break connection terminal. Then, the pressing component drives the pressure plate to approach the limit seat, and the pressing block will gradually press and fix the break connection terminal, copper wire and aluminum wire at the same time, thereby completing the connection of copper wire and aluminum wire.

[0019] Optionally, the pressing component includes a hydraulic cylinder disposed on the processing table and electrically connected to the control system, the pressure plate being disposed on the piston rod of the hydraulic cylinder, and a slide rail being provided on the processing table, with the pressure plate slidingly engaging with the slide rail.

[0020] By adopting the above technical solution, the control system starts the hydraulic cylinder. Under the guidance of the slide rail, the pressure plate slides along the length of the slide rail, thereby causing the pressure plate to move the pressure block closer to the limit seat, thus completing the pressing effect of the three components: the disconnection connection terminal, the copper wire, and the aluminum wire.

[0021] Optionally, the pressure block is provided with a heater electrically connected to the control system, and the pressure plate is provided with an inclined guide tube. The guide tube is inclined from top to bottom toward the point where the break connection terminal and the aluminum wire are pressed together. When the pressure block is pressed against the limiting seat, the lower inclined end of the guide tube extends to the point where the break connection terminal and the aluminum wire are pressed together. A winding wheel is rotatably provided on the pressure plate, and solder wire is wound on the winding wheel. The solder wire slides through both ends of the guide tube. A solder supply element is provided on the pressure plate to drive the winding wheel to rotate.

[0022] By adopting the above technical solution, the control system starts the heater, which heats the pressure block. When the aluminum wire is pressed tightly onto the limit seat by the pressure block, the high temperature on the pressure block is transferred to the point where the break-point connection terminal and the aluminum wire are pressed together through heat transfer. The break-point connection terminal and the aluminum wire are heated, and then the soldering element drives the winding wheel to rotate. The winding wheel rotates and unwinds the solder wire. Under the guidance of the guide tube, the solder wire slides to the point where the break-point connection terminal and the aluminum wire are pressed together and melted by the high temperature transferred from the aluminum wire. The molten solder fills the space between the break-point connection terminal and the aluminum wire, thereby further improving the connection strength between the aluminum wire and the break-point connection terminal, while reducing the resistance at the connection point between the aluminum wire and the break-point connection terminal, thus reducing the possibility of excessive resistance and overheating at the connection point between the aluminum wire and the break-point connection terminal.

[0023] Optionally, the solder supply component includes an adjustment frame disposed on the pressure plate, a bottom wheel rotatably disposed on the adjustment frame, a drive motor electrically connected to the control system disposed on the pressure plate, the bottom wheel coaxially disposed on the output shaft of the drive motor, a pressing block vertically slidably disposed on the adjustment frame, a pressing wheel rotatably disposed on the pressing block, a pressing groove provided on the adjustment frame for the pressing block to slide, the pressing wheel pressing the solder wire onto the bottom wheel, and a compression spring supporting the side of the pressing block facing away from the bottom wheel and the pressing groove.

[0024] By adopting the above technical solution, the elastic force of the compression spring causes the clamping wheel to press the solder wire onto the bottom wheel through the clamping block. When the control system starts the drive motor, the drive motor drives the bottom wheel to rotate. Through the friction between the bottom wheel and the solder wire, the solder wire can slide precisely, which is beneficial to controlling the amount of solder used at the joint between the aluminum wire and the break connection terminal.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. Workers use a pressing device to press copper wires onto the first connector and aluminum wires onto the second connector. At the same time, anti-detachment components prevent the copper wires from detaching from the first connector, and anchors increase the pressing strength between the aluminum wires and the second connector, thereby completing the connection between the copper wires and aluminum wires. Since the substrate, the first connector, and the second connector are relatively small in weight and low in cost, the production cost of the vehicle body is reduced. At the same time, it is conducive to the lightweight development of the vehicle body.

[0027] 2. The worker first places the break connection terminal into the slot of the limit seat, then fixes the copper wire and aluminum wire to the processing table with wire clamps. At the same time, the ends of the copper wire and aluminum wire are placed on the break connection terminal. Then, the pressing component drives the pressure plate to approach the limit seat. The pressing block will gradually press and fix the break connection terminal, copper wire and aluminum wire at the same time, thus completing the connection of the copper wire and aluminum wire.

[0028] 3. The control system starts the heater, which heats the pressure block. When the aluminum wire is pressed against the limit seat by the pressure block, the high temperature on the pressure block is transferred to the point where the break-point connection terminal and the aluminum wire are pressed together through heat transfer. The break-point connection terminal and the aluminum wire are heated, and then the soldering element drives the winding wheel to rotate. The winding wheel rotates and unwinds the solder wire. Under the guidance of the guide tube, the solder wire slides to the point where the break-point connection terminal and the aluminum wire are pressed together and melted by the high temperature transferred from the aluminum wire. The molten solder fills the space between the break-point connection terminal and the aluminum wire, thereby further improving the connection strength between the aluminum wire and the break-point connection terminal, while reducing the resistance at the connection point between the aluminum wire and the break-point connection terminal, reducing the possibility of overheating and burning due to excessive resistance at the connection point between the aluminum wire and the break-point connection terminal. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this application.

[0030] Figure 2 This is a schematic diagram of the structure after the first connector and the copper wire are pressed together, as shown in Embodiment 1 of this application.

[0031] Figure 3 This is a structural schematic diagram of Embodiment 2 of this application, which illustrates the positional relationship between the limiting seat, the pressure plate, and the hydraulic cylinder.

[0032] Figure 4 This is a structural schematic diagram of Embodiment 2 of this application, used to illustrate the positional relationship between the limiting seat, the guide tube, and the winding wheel.

[0033] Explanation of reference numerals in the attached drawings: 1. Base plate; 2. First connector; 3. Second connector; 4. Protrusion; 5. Anchoring tooth; 6. Processing table; 7. Limiting seat; 8. Wire clamp; 9. Slot; 10. Pressure plate; 11. Pressure block; 12. Pressing component; 121. Hydraulic cylinder; 122. Slide rail; 13. Heater; 14. Conduit; 15. Winding wheel; 16. Solder wire; 17. Solder supply component; 171. Adjusting frame; 172. Bottom wheel; 173. Drive motor; 174. Pressing block; 175. Pressing wheel; 176. Pressing groove; 177. Compression spring; 18. Insulation plate; 19. Copper wire; 20. Aluminum wire. Detailed Implementation

[0034] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0035] Example 1

[0036] This application discloses a breakpoint connection terminal.

[0037] Reference Figure 1A breakpoint connection terminal includes a substrate 1, which may be made of copper. One end of the substrate 1 is integrally formed with a first connector 2, and the other end of the substrate 1 is integrally formed with a second connector 3. The cross-sections of the first connector 2 and the second connector 3 are both U-shaped.

[0038] Reference Figure 1 and Figure 2 The copper wire 19 is pressed onto the U-shaped concave side of the first connector 2. An anti-detachment component is arranged on the first connector 2 to prevent the copper wire 19 from detaching from the first connector 2. The anti-detachment component includes several protrusions 4 integrally formed on the first connector 2. The several protrusions 4 are arranged on the concave side of the first connector 2 and are arranged along the direction from the first connector 2 to the second connector 3.

[0039] Reference Figure 1 and Figure 2 The aluminum wire 20 is pressed onto the U-shaped concave side of the second connector 3. Anchors are arranged on the second connector 3 to improve the pressing strength of the aluminum wire 20. The anchors include several anchoring teeth 5 integrally formed on both ends of the U-shape of the second connector 3. When the two ends of the U-shape of the second connector 3 are pressed onto the ends of the aluminum wire 20, the anchoring teeth 5 on both ends of the U-shape of the second connector 3 are arranged in an alternating manner.

[0040] The implementation principle of Example 1 is as follows: The worker uses a pressing device to press the copper wire 19 onto the first connector 2. At this time, the protrusion 4 will deform and squeeze the surface of the copper wire 19, thereby deforming the surface of the copper wire 19 as well, so that a cross groove is formed between the copper wire 19 and the protrusion 4. When the aluminum wire 20 is pressed onto the second connector 3, the anchoring teeth 5 on both ends of the U-shape of the second connector 3 will interlock and mesh with each other, thereby fixing the aluminum wire 20 onto the second connector 3, thus completing the connection between the aluminum wire 20 and the copper wire 19.

[0041] Example 2

[0042] Embodiment 2 of this application discloses a pressing device for a breakpoint connection terminal.

[0043] Reference Figure 3 A crimping device for a breakpoint connection terminal includes a processing table 6, on which a limiting seat 7 is bolted. Both ends of the limiting seat 7 are bolted with wire clips 8. The cross-section of the wire clips 8 is C-shaped, and aluminum wire 20 and copper wire 19 are respectively clipped into the C-shaped grooves of the two wire clips 8.

[0044] Reference Figure 3 and Figure 4 The limiting seat 7 has a slot 9 for placing the break connection terminal. A pressure plate 10 is vertically slidably arranged on the processing table 6. A heat insulation plate 18 is bolted to the pressure plate 10. A pressure block 11 is bolted to the heat insulation plate 18. The pressure block 11 is used to press the break connection terminal onto the limiting seat 7.

[0045] Reference Figure 3 and Figure 4 The processing table 6 is provided with a pressing component 12 that drives the pressure plate 10 to slide. The pressing component 12 includes a hydraulic cylinder 121 that is bolted to the processing table 6 and electrically connected to the control system. The pressure plate 10 is bolted to the piston rod of the hydraulic cylinder 121. A slide rail 122 is bolted to the processing table 6, and the pressure plate 10 and the slide rail 122 are in sliding engagement.

[0046] The worker first places the break-point connection terminal on the slot 9 of the limit seat 7, then clamps the copper wire 19 and aluminum wire 20 on the wire clips 8 at both ends of the limit seat 7, and then places the ends of the copper wire 19 and aluminum wire 20 on the break-point connection terminal. Then the control system starts the hydraulic cylinder 121, and the piston rod of the hydraulic cylinder 121 pushes the pressure plate 10 close to the limit seat 7 until the pressure plate 10 drives the pressure block 11 to press tightly on the limit seat 7.

[0047] Reference Figure 3 and Figure 4 A heater 13, which is electrically connected to the control system, is bolted to the pressure block 11. An inclined conduit 14 is passed between the top and bottom of the pressure plate 10. The conduit 14 is inclined from top to bottom toward the point where the disconnection terminal and the aluminum wire 20 are pressed together. The conduit 14 passes through the heat insulation plate 18.

[0048] Reference Figure 3 and Figure 4 When the pressure block 11 is pressed against the limit seat 7, the lower inclined end of the guide tube 14 extends to the point where the disconnection connection terminal and the aluminum wire 20 are pressed together. A winding wheel 15 is rotatably connected to the pressure plate 10. A solder wire 16 is wound on the winding wheel 15. The solder wire 16 is a common solder wire in the prior art. The solder wire 16 slides through both ends of the guide tube 14.

[0049] Reference Figure 3 and Figure 4 The pressure plate 10 is provided with a solder supply component 17 that drives the winding wheel 15 to rotate. The solder supply component 17 includes an adjustment frame 171 welded to the pressure plate 10. A bottom wheel 172 is rotatably connected to the adjustment frame 171. A drive motor 173 electrically connected to the control system is bolted to the pressure plate 10. The bottom wheel 172 is coaxially bolted to the output shaft of the drive motor 173.

[0050] Reference Figure 3 and Figure 4 A pressing block 174 is vertically slidably arranged on the adjusting frame 171 and above the bottom wheel 172. A pressing wheel 175 is rotatably connected to the pressing block 174. A pressing groove 176 is provided on the adjusting frame 171 for the pressing block 174 to slide. A compression spring 177 is supported between the side of the pressing block 174 facing away from the bottom wheel 172 and the pressing groove 176. The pressing wheel 175 presses the solder wire 16 onto the bottom wheel 172.

[0051] The control system starts the heater 13, which heats the pressure block 11. The heat insulation plate 18 prevents the temperature on the pressure block 11 from being transferred to the pressure plate 10. After the pressure block 11 is pressed against the limit seat 7 for a period of time, the high temperature on the pressure block 11 is transferred to the pressing point of the disconnection terminal and the aluminum wire 20 through heat transfer. Then the control system starts the drive motor 173. The output shaft of the drive motor 173 drives the bottom wheel 172 to rotate. The friction between the bottom wheel 172 and the solder wire 16 is used to rotate the bottom wheel 172.

[0052] Under the guidance of the guide tube 14, the solder wire 16 slides toward the point where the break connection terminal and the aluminum wire 20 are pressed together. During this process, the winding wheel 15 rotates continuously to unwind the solder wire 16. When the solder wire 16 contacts the connection position between the break connection terminal and the aluminum wire 20, the solder wire 16 is melted by high temperature, and the molten solder will fill the space between the break connection terminal and the aluminum wire 20.

[0053] After the molten solder cools and solidifies, the aluminum wire 20 is fixed to the break-point connection terminal. The solder will reduce the resistance at the connection point between the aluminum wire 20 and the break-point connection terminal, thus reducing the possibility of the aluminum wire 20 overheating and burning due to excessive resistance at the connection point.

[0054] The implementation principle of Example 2 is as follows: The worker first places the break connection terminal on the slot 9 of the limit seat 7, then the copper wire 19 and the aluminum wire 20 are respectively clamped on the wire clamps 8 at both ends of the limit seat 7, and then the ends of the copper wire 19 and the aluminum wire 20 are placed on the break connection terminal. Then the control system starts the hydraulic cylinder 121, and the piston rod of the hydraulic cylinder 121 pushes the pressure plate 10 close to the limit seat 7 until the pressure plate 10 drives the pressure block 11 to press tightly on the limit seat 7.

[0055] The control system starts the heater 13, which heats the pressure block 11. The heat insulation plate 18 prevents the temperature on the pressure block 11 from being transferred to the pressure plate 10. After the pressure block 11 is pressed against the limit seat 7 for a period of time, the high temperature on the pressure block 11 is transferred to the pressing point of the disconnection terminal and the aluminum wire 20 through heat transfer. Then the control system starts the drive motor 173. The output shaft of the drive motor 173 drives the bottom wheel 172 to rotate. The friction between the bottom wheel 172 and the solder wire 16 is used to rotate the bottom wheel 172.

[0056] Under the guidance of the guide tube 14, the solder wire 16 slides toward the point where the break connection terminal and the aluminum wire 20 are pressed together. During this process, the winding wheel 15 rotates continuously to unwind the solder wire 16. When the solder wire 16 contacts the connection position between the break connection terminal and the aluminum wire 20, the solder wire 16 is melted by high temperature, and the molten solder will fill the space between the break connection terminal and the aluminum wire 20.

[0057] After the molten solder cools and solidifies, the aluminum wire 20 is fixed to the break-point connection terminal. The solder will reduce the resistance at the connection point between the aluminum wire 20 and the break-point connection terminal, thus reducing the possibility of the aluminum wire 20 overheating and burning due to excessive resistance at the connection point.

[0058] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A breakpoint connection terminal, characterized in that: The system includes a substrate (1), one end of which is provided with a first connector (2) and the other end of which is provided with a second connector (3). The cross-sections of the first connector (2) and the second connector (3) are both U-shaped. A copper wire (19) is pressed onto the U-shaped concave side of the first connector (2). An anti-detachment component is provided on the first connector (2) to prevent the copper wire (19) from detaching from the first connector (2). An aluminum wire (20) is pressed onto the U-shaped concave side of the second connector (3). An anchor is provided on the second connector (3) to improve the pressing strength of the aluminum wire (20).

2. The breakpoint connection terminal according to claim 1, characterized in that: The anti-detachment component includes a plurality of protrusions (4) disposed on the first connector (2), the plurality of protrusions (4) being arranged on the concave side of the first connector (2), and the plurality of protrusions (4) being arranged along the direction from the first connector (2) to the second connector (3).

3. The breakpoint connection terminal according to claim 1, characterized in that: The anchor includes a plurality of anchoring teeth (5) disposed on both ends of the U-shape of the second connector (3). When the two ends of the U-shape of the second connector (3) are pressed against the end of the aluminum wire (20), the anchoring teeth (5) on both ends of the U-shape of the second connector (3) are arranged in an alternating manner.

4. A breakpoint connection terminal according to claim 1, characterized in that: The substrate (1), the first connector (2) and the second connector (3) are integrally formed.

5. A crimping device for a disconnected connection terminal, characterized in that: The system includes a processing table (6), on which a limiting seat (7) is provided. Both ends of the limiting seat (7) are provided with wire clips (8). The cross-section of the wire clips (8) is C-shaped. The wire clips (8) are in the C-shaped grooves of the wire clips (8). The limiting seat (7) is provided with a slot (9) for placing the breakpoint connection terminal. A pressure plate (10) is slidably provided on the processing table (6). A pressure block (11) is provided on the pressure plate (10). The pressure block (11) is used to press the breakpoint connection terminal onto the limiting seat (7). A pressing component (12) is provided on the processing table (6) to drive the pressure plate (10) to slide.

6. The crimping device for a breakpoint connection terminal according to claim 5, characterized in that: The pressing component (12) includes a hydraulic cylinder (121) disposed on the processing table (6) and electrically connected to the control system. The pressure plate (10) is disposed on the piston rod of the hydraulic cylinder (121). A slide rail (122) is disposed on the processing table (6). The pressure plate (10) and the slide rail (122) are slidably engaged.

7. The crimping device for a breakpoint connection terminal according to claim 5, characterized in that: The pressure block (11) is provided with a heater (13) electrically connected to the control system. The pressure plate (10) is provided with an inclined guide tube (14). The guide tube (14) is inclined from top to bottom toward the point of contact between the breakpoint connection terminal and the aluminum wire (20). When the pressure block (11) is pressed against the limiting seat (7), the lower inclined end of the guide tube (14) extends to the point of contact between the breakpoint connection terminal and the aluminum wire (20). The pressure plate (10) is rotatably provided with a winding wheel (15). Solder wire (16) is wound on the winding wheel (15). The solder wire (16) slides through both ends of the guide tube (14). The pressure plate (10) is provided with a solder supply component (17) that drives the winding wheel (15) to rotate.

8. The crimping device for a breakpoint connection terminal according to claim 7, characterized in that: The solder supply component (17) includes an adjustment frame (171) disposed on the pressure plate (10). A bottom wheel (172) is rotatably disposed on the adjustment frame (171). A drive motor (173) electrically connected to the control system is disposed on the pressure plate (10). The bottom wheel (172) is coaxially disposed on the output shaft of the drive motor (173). A pressing block (174) is vertically slidably disposed on the adjustment frame (171). A pressing wheel (175) is rotatably disposed on the pressing block (174). A pressing groove (176) is provided on the adjustment frame (171) for the pressing block (174) to slide. The pressing wheel (175) presses the solder wire (16) onto the bottom wheel (172). A compression spring (177) is supported between the side of the pressing block (174) facing away from the bottom wheel (172) and the pressing groove (176).

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