Harness cable conductor short circuit and doubling connection processing method

Abstract

The invention relates to a wire harness cable conductor short-circuit doubling processing method, which is characterized by comprising the following steps of: 1, stripping the ends of a main conductor (10) and an auxiliary conductor (20) which need to be subjected to short-circuit doubling by using a hot stripping clamp or a laser wire stripping machine, namely stripping insulating layers (4) at the ends of the main conductor (10) and the auxiliary conductor (20) to expose wire cores (5) at the ends of the main conductor (10) and the auxiliary conductor (20); step 2, scattering the main wire (10) and a wire core (5) of which the outer skin is stripped from the end part of the wire (20); and step 3, performing short-circuit doubling on the main wire (10) and the wire core (5) scattered from the end part of the wire (20). According to the invention, the wires are formed after short-circuit doubling, so that the risk of breakage of the wires after doubling is reduced, and the reliability of the wires of the wire harness cable after short-circuit doubling is improved.

Description

Technical Field

[0001] The invention discloses a method for processing short-circuiting and paralleling of wire harness cable conductors. The invention relates to a method for connecting cables. Background Art

[0002] As the electrical connection relationship of aerospace products becomes more and more complex, more and more signals need to be transmitted. At the same time, aerospace products are developing towards miniaturization and lightweight, and it is impossible to equip each electrical device with a separate wire cable. Therefore, in actual products, the required electrical signals are often introduced into each electrical device by short-circuiting and paralleling the wires in the wire harness cable conductors. The reliability of the parallel connection of wires is directly related to the quality and reliability of aerospace products.

[0003] The traditional wire parallel connection process is as follows: On the wire to be paralleled, use a heat stripper to remove part of the outer insulation layer to expose a section of the metal wire core. Wrap the wire core around the exposed metal wire core, put on a heat shrink tubing to protect the solder joint, and directly connect the wire to the device to be connected. If this method is used, there is a risk of damaging the wire core and the paralleled wire is easily broken at the root of the solder joint when receiving external force. Figure 1 shown. Summary of the invention

[0004] The purpose of the present invention is to provide a method for processing short-circuiting and paralleling of wire harness cable conductors, so as to reduce the number of weak points of the wires after welding, and by shaping the wires after short-circuiting and paralleling, the risk of wire breakage after paralleling is reduced, and the reliability of the wire harness cable conductors after short-circuiting and paralleling is improved.

[0005] A method for processing short-circuiting and paralleling of wire harness cable conductors, characterized in that:

[0006] Step 1: Use a hot wire stripper or a laser wire stripper to strip the ends of the main wire 10 and the slave wire 20 that need to be short-circuited and connected, that is, strip off the insulation layer 4 of the ends of the main wire 10 and the slave wire 20 to expose the wire core 5 of the main wire 10 and the slave wire 20;

[0007] Step 2: Unravel the main conductor 10 and the wire core 5 from which the outer skin is stripped from the end of the conductor 20;

[0008] Step 3: Short-circuit and connect the main conductor 10 and the wire core 5 that is scattered from the end of the conductor 20:

[0009] a) placing the main conductor 10 and the secondary conductor 20 side by side in the same direction so that the cores 5 of the main conductor 10 and the secondary conductor 20 are adjacent;

[0010] b) Twist the main conductor 10 and the wire core 5 that is scattered from the end of the conductor 20 in a clockwise or counterclockwise direction; when twisting, pay attention to the twisting force, do not damage the wire core, and do not allow the wire core 5 to break;

[0011] c) using an electric soldering iron to solder the twisted wire core 5 to form a short-circuited parallel soldering point 6;

[0012] d) Use diagonal pliers or chip-retaining pliers to trim the short-circuit solder joint 6 to make its end neat;

[0013] Step 4: Forming the parallel assembly

[0014] a) Put a heat shrink tube 7 on the solder joint to protect it. The heat shrink tube 7 is longer than the two ends of the solder joint by a set length. Use a hot hair dryer to heat shrink the tube and fix it;

[0015] b) bend the line 20 back, and the bend should be far away from the welding point;

[0016] c) The bent wire from line 20 is bundled together with the heat shrink tubing 7.

[0017] Among them, in step one, the main conductor 10 and the insulation layer 4 are stripped from the wire end of the wire 20, and the wire length of the exposed metal wire core 5 is 10mm to 15mm; the processing method is a hot stripping pliers or a laser stripping machine.

[0018] Among them, after the short-circuiting and paralleling in step three, the short-circuiting and paralleling welding point 6 is trimmed, and the trimming length is 3mm to 5mm of the reserved welding point.

[0019] Wherein, when the parallel line assembly is formed in step 4, the length of the heat shrinkable tube is 30mm to 50mm.

[0020] In the fourth step, when the parallel wire assembly is formed, the conductor 20 is bent back by 180°, and the distance between the bent portion and the edge of the heat shrink tubing is not less than 20 mm to ensure the bending radius of the conductor.

[0021] Among them, when the parallel line assembly is formed in step 4, cotton thread or brocade thread is used to bind the parallel line conductors and wire harnesses, and the binding width is not less than 10mm; according to the number of wires, a single parallel line assembly can be bound separately or the entire wire harness can be bound as a whole.

[0022] Among them, when the parallel line assembly is formed in step four, cotton thread or brocade thread is used to bind the parallel line conductors and wire harnesses. The binding position is in the heat shrink tubing area, and after binding, the binding wire is not less than 10mm away from the edge of the heat shrink tubing to ensure the binding effect.

[0023] Beneficial effects of the present invention:

[0024] The present invention provides a wire short-circuiting and paralleling connection processing method for wiring harness cables. The present invention reduces the risk of wire breakage after paralleling by reducing the weak points of the wires after paralleling and shaping the wire harness after paralleling, thereby improving the reliability of the wire harness after paralleling. The present invention reduces the risk of wire breakage after paralleling by shaping the wires after short-circuiting and paralleling, thereby improving the reliability of the wire harness after short-circuiting and paralleling. This method is effective for wires with a cross-sectional area of ​​less than 0.2mm 2 The wire effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 , a schematic diagram of the existing traditional conductor paralleling method;

[0027] Figure 2 , a schematic diagram of the wire end processing of the present invention;

[0028] Figure 3 , a schematic diagram of parallel welding of the main conductor 10 and the slave conductor 20 of the present invention;

[0029] Figure 4 , schematic diagram of the post-molding process of the present invention;

[0030] Figure 5 , the actual picture of the finished product after the line is connected.

[0031] Among them, 1 is the wire that needs to be paralleled, 2 is the wrapping welding, 4 is the insulation layer, 5 is the wire core, 6 is the short-circuit parallel welding point, 7 is the heat shrink tubing, and 8 is the wire for binding and forming. DETAILED DESCRIPTION

[0032] Note: For the convenience of description, one of the wires is defined as the "main wire", that is, this wire is the main wire, and the other wires are merged into it; the remaining wires are defined as "slave wires", that is, this wire is merged into the other wires.

[0033] The present invention is implemented by the following technical scheme: a wiring harness cable conductor short-circuit parallel connection processing method, comprising the following steps:

[0034] The first step is to process the wire ends that need to be short-circuited and paralleled.

[0035] a) If Figure 2 As shown. For wires that need to be short-circuited and paralleled, use thermal strippers or laser wire strippers to process the wire ends. Process the ends of the main and slave wires by 10mm to 15mm to expose the metal wire core.

[0036] The second step is to break up the wire core

[0037] b) Separate the cores of the main line and the slave line.

[0038] The third step is to short-circuit the parallel lines to form a parallel line combination

[0039] c) Place the main line and the secondary line side by side in the same direction.

[0040] d) Twist the loosened wire cores clockwise or counterclockwise. When twisting, pay attention to the twisting force and do not damage the wire core. No wire core should be broken.

[0041] e) Use a soldering iron to solder the twisted wires.

[0042] f) Use diagonal pliers or chip-retaining pliers to trim the solder joints, leaving 3mm to 5mm of the stranded wire core solder joints. Figure 3 shown.

[0043] Step 4: Forming of parallel assembly

[0044] g) Protect each solder joint with a heat shrink tube. The length of the heat shrink tube should be 30mm to 50mm. Leave 5mm to 10mm of heat shrink tube at the front end of the solder joint;

[0045] h) The wire should be bent back, and the distance between the bend and the welding point should be 50mm to 60mm;

[0046] Tie the return wire and the heat shrink tubing together, and the tie width should be no less than 10mm. Figure 4 As shown, make the actual picture as Figure 5 shown.

[0047] The following takes a specific cable as an example to explain the implementation method of wiring harness cable conductor paralleling:

[0048] The first step is to process the wire ends that need to be short-circuited and paralleled.

[0049] a) For all wires that need to be short-circuited and paralleled, use a laser wire stripper to process the wire ends.

[0050] Process the ends of the main line and the slave line by 10mm to 15mm to expose the metal wire core.

[0051] The second step is to break up the wire core

[0052] b) Separate the cores of the main line and the slave line.

[0053] The third step is to short-circuit the parallel lines to form a parallel line combination

[0054] c) Place the main line and the secondary line side by side in the same direction.

[0055] d) Twist the loosened wire cores in a clockwise direction. When twisting, pay attention to the twisting force, do not damage the wire core, and do not allow the wire core to break.

[0056] e) Adjust the electric soldering iron to 310℃±10℃ and use the electric soldering iron to solder the twisted wires. Use 63# solder wire for 3s to 5s.

[0057] f) Use chip-retaining pliers to trim the solder joints, leaving 3mm to 5mm of the stranded wire core solder joints.

[0058] The soldering points should be smooth and full without burrs or sharp edges.

[0059] Step 4: Forming of parallel assembly

[0060] g) Put a heat shrink tube on each solder joint for protection. The length of the heat shrink tube is 50mm. The front end of the tube should extend beyond the solder joint.

[0061] 10mm;

[0062] h) Use a heat gun to shrink the heat shrink tubing and fix it.

[0063] i) The wire will be bent back 180° starting from 20mm from the edge of the heat shrink tubing.

[0064] j) All the wires that need to be short-circuited in the wiring harness are made according to the first step to the fourth step i) above.

[0065] k) Finally, tie the bent wire and the heat shrink tubing together, with a width of 10 mm. The tie position is on the heat shrink tubing, more than 10 mm away from the edge of the heat shrink tubing (the direction of the wire bend). Apply Q98-1 glue on the tie wire to fix it and prevent it from loosening.

[0066] l) After the short circuit and parallel connection are completed, other subsequent work steps of the cable can be carried out.

[0067] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present disclosure (including the claims) is limited to these examples. In line with the present disclosure, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of different aspects of one or more embodiments of the present specification as described above, which are not provided in detail for the sake of simplicity.

Claims

1. A method for processing short-circuiting and paralleling of wiring harness cable conductors, characterized in that: Step 1: Use a hot wire stripping pliers or a laser wire stripping machine to strip the ends of the main wire (10) and the slave wire (20) that need to be short-circuited and connected, that is, strip off the insulation layer (4) of the ends of the main wire (10) and the slave wire (20), so that the wire core (5) of the ends of the main wire (10) and the slave wire (20) is exposed; Step 2: unraveling the main conductor (10) and the wire core (5) whose outer skin is stripped from the end of the conductor (20); Step 3: Short-circuit and connect the main conductor (10) and the wire core (5) that is broken up from the end of the conductor (20): a) placing the main conductor (10) and the secondary conductor (20) side by side in the same direction so that the cores (5) of the main conductor (10) and the secondary conductor (20) are adjacent to each other; b) twisting the main conductor (10) and the wire core (5) that is loosened from the end of the conductor (20) in a clockwise or counterclockwise direction; when twisting, pay attention to the twisting force, do not damage the wire core, and do not allow the wire core (5) to break; c) using an electric soldering iron to solder the twisted wire core (5) to form a short-circuited parallel wire soldering point (6); d) Use diagonal pliers or chip-retaining pliers to trim the short-circuit solder joint (6) to make its end neat; Step 4: Forming the parallel assembly a) putting a heat shrink tubing (7) on the solder joint for protection, wherein the heat shrink tubing (7) is longer than both ends of the solder joint by a set length; using a hot air blower to heat shrink and fix the tubing; b) bend the line (20) back, and the bend should be at a distance from the welding point; c) The bent wire from the cable (20) is bundled together with the heat shrink tubing (7).

2. A method for processing short-circuiting and paralleling of wiring harness cable conductors according to claim 1, characterized in that: In step 1, the main conductor (10) and the insulating layer (4) are stripped from the end of the conductor (20) to expose the metal wire core (5) with a length of 10 mm to 15 mm; the processing method is a thermal stripping pliers or a laser wire stripping machine.

3. A method for processing short-circuiting and paralleling of wiring harness cable conductors according to claim 1, characterized in that: After the short-circuiting and paralleling in step 3, the short-circuiting and paralleling welding point (6) is trimmed, and the trimming length is 3mm to 5mm of the welding point.

4. A method for processing short-circuiting and paralleling of wiring harness cable conductors according to claim 1, characterized in that: When the parallel assembly is formed in step 4, the heat shrinkable sleeve (7) is 30 mm to 50 mm in length.

5. A method for processing short-circuiting and paralleling of wiring harness cable conductors according to claim 1, characterized in that: When the parallel wire assembly is formed in step 4, the conductor (20) is bent back 180 degrees, and the distance between the bent part and the edge of the heat shrinkable sleeve (7) is not less than 20 mm to ensure the bending radius of the conductor.

6. A method for processing short-circuiting and paralleling of wiring harness cable conductors according to claim 1, characterized in that: When the parallel line assembly is formed in step 4, cotton thread or brocade thread is used to bind the parallel line conductors and wire harnesses, and the binding width is not less than 10mm; according to the number of wires, a single parallel line assembly can be bound separately or the entire wire harness can be bound as a whole.

7. A method for processing short-circuiting and paralleling of wiring harness cable conductors according to claim 1, characterized in that: When the parallel line assembly is formed in step 4, cotton thread or brocade thread is used to bind the parallel line conductors and wire harnesses. The binding position is in the heat shrink tubing area, and after binding, the binding wire is not less than 10mm away from the edge of the heat shrink tubing to ensure the binding effect.

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