Self-rolling type opening shielding sheath installation method

Abstract

The invention discloses a self-rolling type opening shielding sheath mounting method. The method comprises the following steps: S1, preparation work: preparing scissors, a binding rope, a self-rolling type HJ-EMJ sheath, a silica gel belt, a steel binding belt and a supporting ring; s2, a shielding sheath is installed, wherein the self-rolling HJ-EMJ sheath is slightly slid along the thin wire harness, and the area needing to be protected is completely covered with the self-rolling HJ-EMJ sheath; s3, shielding maintenance and repair: regularly checking the state of the self-rolling type opening shielding sheath to ensure the integrity of the self-rolling type opening shielding sheath; the number of cables is increased and decreased by cutting off several ribbons and binding ropes and opening the HJ-EMJ sheath, and the HJ-EMJ shielding sheath can be replaced under the condition that the wire harnesses are not disassembled. And S4, fixing: fixing the self-rolling type HJ-EMJ sheath at a position by using the silica gel belt, the steel binding belt and the binding rope so as to prevent the self-rolling type HJ-EMJ sheath from sliding and moving in use. And adjustable silica gel is introduced, so that the shielding sheath can more accurately adapt to special shapes or complex lines, and the adaptability and the flexibility are improved.

Description

Technical Field

[0001] The present invention relates to the field of wire protection, and more specifically, to a method for installing a self-rolling open shielding sheath. Background Art

[0002] A traditional method for installing a self-rolling open shielding sheath has advantages in many aspects; the HJ-EMJ electromagnetic shielding sheath has good shielding performance and salt spray corrosion resistance, adopts an open self-curling design, is convenient and fast to install, and is suitable for the installation and maintenance of in-aircraft shielding cables; it can be widely used for the shielding protection and bundling of electronic wire harnesses in all areas of airplanes and flagships, and the open self-curling design facilitates the modification of the original routes of airplanes and flagships and the maintenance of existing electromagnetic shielding sheaths; at the same time, it saves installation time and cost; this technical background reflects the urgent need for electromagnetic interference management in the industrial and electronic equipment fields, and provides a practical solution for improving the reliability and performance of equipment;

[0003] However, the traditional method for installing a self-rolling open shielding sheath has some deficiencies; first, the installation process may be relatively cumbersome and requires precise manual adjustment, increasing the work difficulty of operators; second, the coverage of special-shaped or complex wire harnesses may not be flexible enough, resulting in unsatisfactory shielding effects; in addition, once the installation is completed, adjusting or changing the wire harness structure may become complicated and require reinstalling the shielding sheath; the traditional method may also have problems with insufficient durability. When the wire harness is frequently bent or stretched, the sheath may wear or break, reducing the overall electromagnetic shielding performance. Summary of the Invention

[0004] 1. Technical Problems to be Solved

[0005] The purpose of the present invention is to provide a method for installing a self-rolling open shielding sheath to solve the problems raised in the above background art: first, the installation process may be relatively cumbersome and requires precise manual adjustment, increasing the work difficulty of operators; second, the coverage of special-shaped or complex wire harnesses may not be flexible enough, resulting in unsatisfactory shielding effects; in addition, once the installation is completed, adjusting or changing the wire harness structure may become complicated and require reinstalling the shielding sheath; the traditional method may also have problems with insufficient durability. When the wire harness is frequently bent or stretched, the sheath may wear or break, reducing the overall electromagnetic shielding performance.

[0006] 2. Technical Solutions

[0007] A method for installing a self-rolling open shielding sheath, the method for installing a self-rolling open shielding sheath includes the following steps:

[0008] S1. Preparation: Prepare scissors, binding ropes, self - rolling HJ - EMJ sheaths, silicone tapes, steel tie - straps and support rings;

[0009] The steel tie - strap is a double - loop stainless - steel tie - strap, specially used for shielding termination and shielding lap repair;

[0010] The support ring is used to bear the contraction force of the steel tie - strap during the shielding repair of the wire harness, protecting the cable from being damaged by the steel tie - strap.

[0011] The self - adhesive silicone tape 3N is used in the cable manufacturing stage, mostly for cable thickening, tail filling, cable protection, etc. The red 66N is used during maintenance or repair for cable thickening, cable protection, etc.

[0012] The scissors are used for cutting the shielding sheath, binding ropes and silicone tapes;

[0013] The binding ropes are used for bundling cables or sheaths;

[0014] The steel tie - strap installation tool is a special tool for installing the shielding lap steel tie - strap.

[0015] The self - rolling HJ - EMJ shielding sheath is made of PPS and nickel - plated copper wire braid;

[0016] Before starting the installation, prepare a small amount of thinner wire harnesses and bundle the branched wire harnesses with the said binding ropes;

[0017] Select high - quality scissors to trim the self - rolling HJ - EMJ sheath into a specification with a diameter of 5 to 45 MM, ensuring a smooth cut;

[0018] S2. Shielding sheath installation: Slide the self - rolling HJ - EMJ sheath gently along the thinner wire harness, completely covering the area to be protected;

[0019] The self - rolling open - ended shielding sheath is fixed with the said silicone tape, steel tie - strap and binding rope;

[0020] S3. Fixing: Use the said silicone tape, steel tie - strap and binding rope to fix the self - rolling HJ - EMJ sheath in place to prevent it from sliding and moving during use;

[0021] S4. Testing: After the installation is completed, conduct tests to ensure that the shielding effect meets the design requirements;

[0022] This includes using test equipment to detect the electromagnetic shielding effect and electrical performance of the shielding.

[0023] S5. Shielding maintenance and repair: Regularly check the status of the self - rolling open - ended shielding sheath to ensure its integrity;

[0024] If there is damage or malfunction, replace and repair the self - rolling opening shielding sheath in a timely manner to maintain the reliability of the wire harness and the shielding effect;

[0025] By cutting several cable ties and binding ropes, open the HJ - EMJ sheath to add and remove cables from the wire harness. Also, the HJ - EMJ shielding sheath can be replaced without removing the wire harness;

[0026] Preferably, the self - rolling HJ - EMJ shielding sheath of S1 also adds easily extensible silicone. Preferably, when installing the self - rolling HJ - EMJ sheath with a diameter of 5 to 45 MM, it is twisted. It is twisted 1 - 2 turns per meter length, not exceeding 2 turns per meter, and the overlapping angle is between 65 degrees and 130 degrees, with the best angle being 90 degrees. When applied at the maximum diameter, the overlapping length is the shortest, with a purple marking line marking the maximum sheath diameter;

[0027] The outside of the self - rolling HJ - EMJ shielding sheath must be tightly bound. In the case of branches, install the sheath of the smallest branch first, and finally install the large branch. Install the small sheath inside the large sheath and pay attention to identifying the position of the wire;

[0028] Preferably, at the starting end of the self - rolling HJ - EMJ shielding sheath and in some special occasions, the interval of the tape is 25 - 35 cm. When connecting the self - rolling HJ - EMJ shielding sheath to the housing and other parts, use a shielding cable tie tool. At the starting end of the sheath, install 3N tape on the outside to fix and ensure that the opening of the shielding sheath is aligned with the connection point of the wire harness;

[0029] Preferably, for S2, when there are branches in the wire harness, ensure appropriate cutting and installation at the branch to protect each branch;

[0030] Ensure that the shielding sheath at the branch is connected to the shielding of the main wire harness to form continuous shielding;

[0031] If two wire harnesses need to be connected, ensure that the shielding sheath is peeled near the connection point so that the shielding of the two wire harnesses can be effectively grounded;

[0032] Use appropriate connectors and methods to ensure electromagnetic compatibility at the connection point.

[0033] Preferably, the shielding maintenance and repair of S3 includes the following steps:

[0034] S31. Remove the damaged shielding braid;

[0035] S32. Install the support rings at both ends of the damaged shielding, and use the silicone tape to adjust the gap between the support ring and the wire harness;

[0036] S33. Place the cut shield sheath on the wire harness in a reverse-folded manner on the support ring;

[0037] S34. Cut a self-rolling HJ-EMJ sheath of appropriate length and install it at the damaged shield. The length of the self-rolling HJ-EMJ sheath is greater than the distance between the two support rings, and use the steel tie strap to tie the self-rolling HJ-EMJ sheath and the original sheath at the support ring to ensure good overlap between the new and old sheaths. The newly overlapped sheath is fixed with the tape, the binding rope, and the tie strap;

[0038] S35. Wrap and protect the overlapping part of the steel tie strap with the silicone tape.

[0039] 3. Compared with the prior art, the advantages of the present invention are as follows:

[0040] (1) Precise adaptability: Introduce adjustable silicone to enable the shield sheath to more precisely adapt to special shapes or complex circuits, improving adaptability and flexibility.

[0041] (2) The HJ-EMJ sheath is woven from PPS and nickel-plated copper wire, and the self-rolling design facilitates installation and maintenance.

[0042] (3) The use of bundling and stainless steel tie straps ensures good shielding anti-interference performance. Description of the Drawings

[0043] Figure 1 is the overall process schematic diagram of the present invention;

[0044] Figure 2 is the installation schematic diagram of the tail attachment of the present invention;

[0045] Figure 3 is the installation schematic diagram of the three-branch sheath of the present invention;

[0046] Figure 4 is the installation schematic diagram of the 2 two-branch wire harness of the present invention, with one large and one small branch;

[0047] Figure 5 is the installation schematic diagram of the shield ground wire of the present invention;

[0048] Figure 6 、 Figure 7 、 Figure 8 is the installation step schematic diagram of the two straight-line overlap of the present invention. Detailed Embodiments

[0049] Embodiment: Please refer to Figure 1 , a method for installing a self-rolling open shield sheath, a method for installing a self-rolling open shield sheath includes the following steps;

[0050] S1. Preparation: Prepare scissors, binding ropes, self - rolling HJ - EMJ sheaths, silicone tapes, steel tie - straps and support rings;

[0051] The self - rolling HJ - EMJ shielding sheath is made of PPS and nickel - plated copper wire braid;

[0052] Before starting the installation, prepare a small amount of thinner wire harnesses and tie up the branched wire harnesses with binding ropes;

[0053] Select high - quality scissors to trim the self - rolling HJ - EMJ sheath into a specification with a diameter of 5 to 45 MM, ensuring that the cut is smooth;

[0054] The suitable wire ranges for each specification of shielding sheath are as follows:

[0055]

[0056]

[0057] S2. Installation of shielding sheath: Gently slide the self - rolling HJ - EMJ sheath along the thinner wire harness to completely cover the area to be protected;

[0058] Fix the outside of the self - rolling open - ended shielding sheath with silicone tapes, steel tie - straps and binding ropes;

[0059] S3. Fixing: Use the silicone tape, the steel tie - strap and the binding rope to fix the self - rolling HJ - EMJ sheath in place to prevent it from sliding and moving during use;

[0060] S4. Testing: After the installation is completed, conduct tests to ensure that the shielding effect meets the design requirements;

[0061] This includes using test equipment to detect the electromagnetic shielding effect and electrical performance of the shielding.

[0062] S5. Shielding maintenance and repair: Regularly check the status of the self - rolling open - ended shielding sheath to ensure its integrity;

[0063] If there is damage or a fault, promptly replace and repair the self - rolling open - ended shielding sheath to maintain the reliability of the wire harness and the shielding effect;

[0064] By cutting several tie - straps and binding ropes, open the HJ - EMJ sheath to add and reduce cables to the wire harness. It is also possible to replace the HJ - EMJ shielding sheath without removing the wire harness;

[0065] S1 The self - rolling HJ - EMJ shielding sheath also adds easily extensible silicone.

[0066] Specifically, the steps for adding silicone are as follows:

[0067] Step 1: Preparation Work

[0068] Prepare silicone:

[0069] Select silicone suitable for the shielding sheath material. Ensure that the properties of the silicone meet the usage environment and requirements.

[0070] Inspect the shielding sheath:

[0071] Inspect the appearance of the self - rolling HJ - EMJ shielding sheath to ensure that it has no damage, wear, or other problems.

[0072] Step 2: Clean the Operation Area

[0073] Clean the surface of the shielding sheath:

[0074] Wipe the self - rolling shielding sheath with a cleaner or deionized water to ensure that the surface is clean and free of dust and grease.

[0075] Step 3: Silicone Addition

[0076] Select the addition area:

[0077] Determine the area where silicone needs to be added, usually the opening or connection of the shielding sheath.

[0078] Precisely add silicone:

[0079] Use appropriate tools (such as a syringe or a small glue gun) to precisely add silicone to the required position. Ensure that there is no over - addition to prevent unnecessary impurities.

[0080] Step 4: Smoothing and Shape Adjustment

[0081] Smooth the silicone:

[0082] Use a tool or finger to gently smooth the silicone to ensure that it evenly covers the target area.

[0083] Shape adjustment:

[0084] If necessary, adjust the shape of the silicone according to the need to ensure that it completely covers the target area and adapts to the shape of the shielding sheath.

[0085] Step 5: Cure the Silicone

[0086] Wait for the silicone to cure:

[0087] Wait for an appropriate period according to the curing time of the silicone to ensure that the silicone is completely cured.

[0088] Verify the silicone status:

[0089] Check the curing status of the silicone to ensure that it is firmly attached to the shielding sheath.

[0090] Step 6: Testing and Verification

[0091] Test the shielding effect:

[0092] After the silicone is cured, test the shielding effect to ensure that the silicone does not affect the performance of the shielding sheath.

[0093] Verify the durability:

[0094] The shielding sheath with added silicone has sufficient durability during use, can resist the external environment and stress, and also has the characteristics of easy extensibility to adapt to wire harnesses of different shapes, ensuring full coverage of the shielding jacket.

[0095] Precautions:

[0096] Before adding silicone, ensure that the surface of the shielding sheath is clean and remove any dirt that may affect the adhesion of the silicone.

[0097] Arrange the work process reasonably according to the curing time and working temperature requirements of the silicone.

[0098] Follow the guidelines and safety precautions of the silicone manufacturer.

[0099] If the silicone needs to be bonded to other materials (such as the shielding sheath material), select a suitable glue or adhesive.

[0100] When installing the self-rolling HJ-EMJ sheath with a diameter of 5 to 45 MM, twist it. Twist 1-2 turns per meter length, not exceeding 2 turns per meter, and the overlapping angle is between 65 degrees and 130 degrees, with the best angle being 90 degrees;

[0101] The outside of the self-rolling HJ-EMJ shielding sheath must be tightened. In the case of branches, install the sheath of the smallest branch first, and finally install the large branch. Install the small sheath inside the large sheath and pay attention to identifying the position of the wire.

[0102] At the starting end of the self-rolling HJ-EMJ shielding sheath and in some special occasions, the interval of the tape is 25-35 cm. Use a shielding tie tool to connect the self-rolling HJ-EMJ shielding sheath to the housing and other parts. At the starting end of the sheath, install 3N tape on the outside to fix and ensure that the opening of the shielding sheath is aligned with the wire harness connection point.

[0103] Specifically, for the installation of the tail attachment, refer to Figure 2 .

[0104] S2 When the wire harness has branches, ensure appropriate cutting and installation at the branch to protect each branch;

[0105] Ensure that the shielding sheath at the branch is connected to the shielding of the main wire harness to form a continuous shield;

[0106] If two wire harnesses need to be connected, ensure that the shielding sheath is peeled near the connection point so that the shields of the two wire harnesses can be effectively grounded;

[0107] Use appropriate connectors and methods to ensure electromagnetic compatibility at the connection point.

[0108] Specifically, for the branch wire harness, refer to the installation of the three-branch sheath Figure 3 ;

[0109] Specifically, for the two-branch wire harness, refer to the installation of one large and one small branch Figure 4 ;

[0110] Specifically, the installation steps for the shield grounding wire are as follows, refer to Figure 5 :

[0111] A. Install the support ring (optional) between the shielding sheath and the wire harness to bear the force of the steel tie strap and protect the cable. Use the steel tie strap to crimp the grounding wire to the shielding sheath;

[0112] B. Place the end of the grounding wire at the support ring (optional) position and install the steel tie strap at the support ring position;

[0113] Note that the steel tie strap must pass through the hole and wind around twice;

[0114] C. Use a special tool to tighten and cut the steel tie strap. The steel tie strap must be stuck on the support ring.

[0115] D. Wrap the crimping part of the steel tie strap with silicone tape for protection.

[0116] Specifically, the installation steps for the two straight-line lap joint are as follows:

[0117] A. Install the support ring (optional) on the cable at the lap joint. It can be used in combination with silicone tape to adjust the gap between the support ring (optional) and the cable. Refer to Figure 6 ;

[0118] B. Overlap the two layers of shielding sheaths on the support ring (optional). Refer to Figure 7 ;

[0119] C. Use a steel tie strap to crimp the two layers of shielding layers together, tighten and cut the steel tie strap. Refer to Figure 8 ;

[0120] D. Wrap the steel tie strap at the crimping place with silicone tape to prevent scratching other cables. Refer to Figure 8 .

[0121] S3 Shield maintenance and repair include the following steps:

[0122] S31. Remove the damaged shielding braid;

[0123] S32. Install support rings at both ends of the breakage, and use a silicone tape to adjust the gap between the support ring and the wire harness;

[0124] S33. Place the cut shielding sheath on the wire harness in a reverse-folded manner on the support ring;

[0125] S34. Cut a self-rolling HJ-EMJ sheath of appropriate length and install it at the breakage. The length of the self-rolling HJ-EMJ sheath is greater than the distance between the two support rings, and use a steel tie to bind the self-rolling HJ-EMJ sheath and the original sheath at the support ring to ensure good overlap of the new and old sheaths. The newly overlapped sheath can be fixed with tape, binding ropes, and ties;

[0126] S35. Wrap and protect the overlapping part of the steel tie with a red silicone tape.

[0127] The above shows and describes the basic principles, main features, and advantages of the present invention; those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed; the scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for installing a self-rolling open shielding sheath, characterized in that, The described self-rolling open shielding sheath installation method includes the following steps: S1. Preparation: Prepare scissors, binding ropes, self-rolling HJ-EMJ sheaths, silicone tapes, steel tie straps, and support rings; The self-rolling HJ-EMJ shielding sheath is woven from PPS and nickel-plated copper wires; Before starting the installation, prepare a small amount of thinner wire harnesses and tie the branched wire harnesses well with the binding ropes; Select high-quality scissors to trim the self-rolling HJ-EMJ sheath into a specification with a diameter of 5 to 45 MM, ensuring that the cut is flat; S2. Shielding sheath installation: Gently slide the self-rolling HJ-EMJ sheath along the thinner wire harness to completely cover the area to be protected; The outside of the self-rolling HJ-EMJ sheath is fixed with the silicone tape, steel tie straps, and binding ropes; S3. Fixing: Use the silicone tape, the steel tie straps, and the binding ropes to fix the self-rolling HJ-EMJ sheath in place to prevent it from sliding and moving during use; S4. Testing: After the installation is completed, conduct tests to ensure that the shielding effect meets the design requirements; This includes using test equipment to detect the electromagnetic shielding effect and electrical performance of the shielding; S5. Shielding maintenance and repair: Regularly check the status of the self-rolling open shielding sheath to ensure its integrity; If there is damage or a fault, promptly replace and repair the self-rolling open shielding sheath to maintain the reliability of the wire harness and the shielding effect; By cutting several tie straps and binding ropes, open the HJ-EMJ sheath to add and subtract cables to the wire harness. It is also possible to replace the HJ-EMJ shielding sheath without removing the wire harness; 2. The installation method of a self-rolling open shielding sheath according to claim 1, characterized in that The self-rolling HJ-EMJ shielding sheath described in S1 also adds easily extensible silicone; 3. A method for installing a self-rolling open shielding sheath according to claim 1, characterized in that, When installing the self-rolling HJ-EMJ sheath with a specification of 5 to 45 MM in diameter in S2, it is twisted. It is twisted 1 - 2 turns per meter in length, with no more than 2 turns per meter, and the overlapping angle is between 65 degrees and 130 degrees, and the optimal angle is 90 degrees; The outside of the self-rolling HJ-EMJ shielding sheath must be tightly bound. In the case of branches, first install the sheath of the smallest branch, and finally install the large branch. Install the small sheath inside the large sheath and pay attention to identifying the position of the wire; 4. A method for installing a self-rolling open shielding sheath according to claim 1, characterized in that, In the starting end of the self-rolling HJ-EMJ sheath described in S2 and in some special occasions, the interval of the tape is 25 - 35 cm. The self-rolling HJ-EMJ shielding sheath is connected to the housing and other parts using a shielding tie strap tool. At the starting end of the sheath, add 3N tape on the outside to fix and ensure that the opening of the shielding sheath is aligned with the connection point of the wire harness; 5. A method for installing a self - rolling open - shielded sheath according to claim 1, characterized in that, In S2, when the self-rolling HJ-EMJ shielding sheath is installed on a large scale with fewer branches, it is installed using a drone automation method and an advanced path planning algorithm is used during the installation process; 6. A self-rolling open shielding sheath installation method according to claim 1, characterized in that, In S2, when there are branches in the wire harness, ensure appropriate cutting and installation at the branch to protect each branch; Ensure that the shielding sheath at the branch is connected to the shielding of the main wire harness to form a continuous shielding; If two wire harnesses need to be connected, ensure that the shielding sheath is peeled near the connection point so that the shielding of the two wire harnesses can be effectively grounded; Use appropriate connectors and methods to ensure electromagnetic compatibility at the connection points.

7. A method for installing a self-rolling open shielding sheath according to claim 1, characterized in that, The maintenance and repair of the S5 shield includes the following steps: S31. Remove the damaged shield braid. S32. Install the support rings at both ends of the damaged shield, and adjust the gap between the support ring and the wire harness with the silicone tape. S33. Place the cut shield sheath on the wire harness in a reverse-folded manner on the support ring. S34. Cut a self-rolling HJ-EMJ sheath of appropriate length and install it at the damaged shield. The length of the self-rolling HJ-EMJ sheath is greater than the distance between the two support rings. Use the steel tie straps to tie the self-rolling HJ-EMJ sheath and the original sheath at the support ring to ensure good overlap between the new and old sheaths. Fix the newly overlapped sheath with the tape, the binding rope, and the tie straps. S35. Wrap and protect the overlapping part of the steel tie straps with the silicone tape.

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