Wire harness fixing device

Abstract

A wiring harness fixing device for fixing a wiring harness on a surface of a columnar structure, characterized in that the wiring harness fixing device comprises a fixing pad, the fixing pad is integrally formed in a C shape, an inner space of the fixing pad is provided for a fastening steel band to pass through and be fixed, and a first opening and a second opening are respectively formed in two opposite side surfaces of the fixing pad, the first opening is used for the screw rod of a fastening screw to pass through, the aperture of the first opening is matched with the diameter of the screw rod of the fastening screw, and the second opening is used for the screw head of the fastening screw to be embedded, the size of the second opening is matched with the size of the screw head of the fastening screw. The inner space of the pad considers the matching and operability of general tools. Through the wiring harness fixing device, the assembly process can be effectively simplified and the lightweight design can be realized.

Description

Technical Field

[0001] This utility model relates to a wire harness fixing device, and more specifically, to a wire harness fixing device that can adapt to the surface of a columnar structure and achieve stable installation by using the locking force of a steel clip. It is particularly suitable for wire harness fixing devices for columnar structures such as aircraft landing gear, and belongs to the field of wire harness installation technology for aerospace equipment. Background Technology

[0002] In the aviation field, aircraft electrical systems are crucial for ensuring the stable operation of core functions such as communication, navigation, flight control, and power control of the entire aircraft. As a key carrier for signal and energy transmission in electrical systems, wiring harnesses are directly related to flight safety and the long-term service life of equipment due to their fixed reliability.

[0003] Among them, the columnar main structures of aircraft, such as landing gear, engine mounts, and fuselage frames, need to withstand complex conditions such as fuselage weight, landing impact, high-altitude vibration, and temperature fluctuations over long periods. The fixing of their surface wiring harnesses not only needs to meet the basic requirement of "long-term stability without loosening," but also needs to adapt to the curved surface shape of the columnar structure, the confined operating space, and the lightweight, high assembly efficiency, and high environmental adaptability design standards unique to the aviation industry. In particular, as the only key load-bearing component of the aircraft in contact with the ground, the landing gear's surface wiring harnesses also need to resist additional risks such as oil contamination and mechanical wear. Therefore, the structural rationality and performance stability of the wiring harness fixing device have become important factors restricting the reliability of the landing gear and even the entire aircraft.

[0004] Currently, the aviation industry generally adopts the traditional technical solution of "metal clips + multi-part pads + clamps" for fixing wire harnesses of columnar structures such as aircraft landing gear. The core design idea of ​​this solution is to achieve "indirect connection between columnar structures and wire harnesses" through the collaboration of multiple components.

[0005] The specific implementation process and structural features are as follows: First, a high-strength metal clip is selected as the basic fixing carrier. The clip is tightly attached to the surface of the columnar structure through "wrapping and binding + locking" to form the basic support for fixing the wire harness. Second, in order to solve the compatibility problem of direct fixing between the metal clip and the wire harness, a special pad needs to be hung on the metal clip. As a core connecting component, the pad needs to achieve the dual functions of "stable connection with the metal clip" and "providing an installation reference for the clamp". Finally, the wire harness or the rigid outer protection containing the wire harness is fixed to the pad by clamps made of metal or high-strength engineering plastic. This ultimately forms a complete fixing link of "columnar structure - metal clip - pad - clamp - wire harness", ensuring that the wire harness will not be displaced or damaged under complex working conditions.

[0006] Traditional solutions require the "pad" to perform a dual connection function, employing a typical multi-part assembly design. It includes at least two independent functional components: a "pad sleeve" and a "C-shaped pad." These two components must work together to function. The "pad sleeve" is a groove-shaped structure with a groove width adapted to the width of the metal clip, its function being to fit and fix it to the metal clip. The "C-shaped pad" is a semi-encircling structure with a positioning structure on its inner side that fits the pad sleeve. It requires precise manual alignment before being fastened to the outer side of the pad sleeve. Simultaneously, the outer side of the "C-shaped pad" has a connecting structure (such as bolt holes and clip slots) for installing clamps. Fasteners connect the clamps to the pad, ultimately securing the wire harness.

[0007] In addition, in order to accommodate wire harnesses and clamps of different diameters, the pads and C-type pads in the traditional solution need to be designed in various specifications, resulting in poor part versatility. This not only increases the complexity of production and processing, but also increases inventory management costs and the difficulty of selection during assembly.

[0008] Specifically, in practical applications, this traditional technical solution is limited by the structural design of multiple parts, resulting in a series of unavoidable technical defects that severely restrict its application in the aerospace field.

[0009] Firstly, the assembly process is complex, inefficient, and poorly adaptable. Since the pads require two-step assembly, each step necessitates precise manual alignment. Therefore, if the alignment deviation between the pad sleeve and the metal clip exceeds the allowable range, the C-type pad will not engage properly and will require readjustment, significantly increasing assembly time. Furthermore, the operating space for columnar structures such as landing gear is typically extremely limited (e.g., the gap between the shock absorber strut and the wheel well bulkhead is limited). Operators must use small tools to align and lock parts, which not only restricts tool rotation angles but also makes it easy for micro-parts to fall due to operational errors, further extending assembly time.

[0010] Secondly, the structural weight redundancy is detrimental to aircraft lightweighting. Weight control of aviation equipment directly affects the overall fuel economy, payload, and structural fatigue life of the aircraft. In traditional solutions, the multi-part design of a single pad results in significant weight redundancy: the pad assembly, consisting of the pad sleeve, C-shaped pad, and additional locking components, is significantly heavier than an integrated structure. Furthermore, an aircraft's landing gear system requires dozens of wiring harness fixing points, making the total weight redundancy of the pad portion alone considerable. Coupled with the weight of metal clips and clamps, the overall weight problem of the fixing system becomes particularly prominent.

[0011] Third, gaps between multiple parts can easily lead to reliability risks. During flight and landing, aircraft landing gear is subjected to high-frequency, high-amplitude, and severe vibrations. The mating surfaces of traditional landing gear pads ("pad sleeve - C-type pad") inevitably have assembly gaps, which can easily cause relative friction and impact under vibration. After long-term operation, the mating surfaces will not only wear down but may also cause locking components to loosen or fail, leading to overall pad loosening, clamp displacement, and ultimately, wiring harness wear or signal transmission interruption. In severe cases, it may even affect the normal operation of the electrical system, posing a potential threat to flight safety.

[0012] Fourth, the traditional assembly and disassembly process of modular connectors requires special tools and techniques, which reduces the ease of operation and increases operating costs.

[0013] In view of the shortcomings of the existing technology, how to provide a wire harness fixing device that can effectively simplify the assembly process and achieve lightweight design, while taking into account reliability and economy, has become an urgent problem to be solved. Utility Model Content

[0014] This disclosure is made to solve the above-mentioned technical problems, and its purpose is to provide a wire harness fixing device that can be adapted to the surface of a columnar structure, simplifying the assembly process and reducing the installation difficulty through an integrated structural design, while achieving a lightweight design to reduce weight redundancy.

[0015] To achieve the objectives of this disclosure, a wire harness fixing device is provided for fixing wire harnesses on the surface of a columnar structure. The aforementioned wire harness fixing device includes a fixing pad. The aforementioned fixing pad is generally C-shaped, and its internal space allows the fastening steel strip to pass through and be fixed. A first opening and a second opening are respectively provided on two opposite sides of the fixing pad. The first opening is for the threaded part of the fastening screw to pass through, and its diameter is adapted to the threaded part diameter of the fastening screw. The second opening is for the head of the fastening screw to be inserted, and its size is adapted to the head size of the fastening screw.

[0016] As described above, the C-shaped fixing pads, through their structural design, enable the fitting and insertion of the fastening steel strips and the precise assembly of the fastening screws, providing an integrated load-bearing foundation for wire harness fixing. This avoids the mismatch issues associated with traditional multi-part pads and simplifies the connection link between the "column structure - fixing device - wire harness" structure, effectively improving the basic stability of the fixing system.

[0017] Preferably, the aforementioned fixing pad is formed from high-strength metal through an integral sheet bending process, forming an overall non-closed shape, and retaining a gap at the end.

[0018] As described above, the non-closed structure formed by bending a high-strength metal unibody sheet can eliminate the assembly gaps and weight redundancy of traditional multi-part pads, significantly reducing the weight of a single fixing point and meeting the lightweight requirements of the aerospace field; the gap retained at the end gives the structure basic elasticity, which facilitates the insertion of fastening steel strips and subsequent assembly operations, and can effectively reduce the assembly time of traditional split structures.

[0019] Preferably, the non-closed C-shaped configuration of the aforementioned fixing pad has an open elasticity. When the aforementioned fastening steel band causes the aforementioned fixing pad to adhere to the aforementioned columnar structure, the aforementioned fixing pad can adapt to the curvature of the aforementioned columnar structure through its own elastic deformation.

[0020] As described above, the open elasticity of the non-closed C-shaped configuration allows the fixing pad to adapt to the curved surface of the columnar structure with different curvatures through slight deformation under the drive of the fastening steel strip. This effectively ensures a tight fit with the columnar surface, avoids the risk of loosening caused by the poor adaptability of the curved surface in traditional rigid structures, and improves the fixing reliability under complex working conditions.

[0021] Preferably, reinforcing ribs are integrally formed at all corners of the aforementioned fixing pad. The reinforcing ribs are formed simultaneously with the aforementioned fixing pad by a metal sheet bending process and are distributed in a ring around the stress concentration area of ​​the aforementioned fixing pad.

[0022] As described above, the integrally formed reinforcing ribs at the corners enhance the structural strength of stress concentration areas through a circumferential distribution. This significantly improves the fixing pad's resistance to bending and torsional deformation, enabling it to withstand the locking force of the fastening kit, the reaction force of the columnar structure, and high-frequency vibration loads in aerospace scenarios. This avoids structural deformation during long-term use and extends service life.

[0023] Preferably, all corners of the aforementioned fixing pad are chamfered and formed into rounded corners.

[0024] As described above, the chamfering treatment of the corners can eliminate the stress concentration at the edges of the bent metal sheet and prevent cracks from starting under long-term vibration; at the same time, it can avoid scratches to operators or other parts by the edges during assembly and improve operational safety and structural durability.

[0025] Preferably, the diameter of the second opening is larger than the diameter of the first opening, so as to realize the embedding and positioning function of the screw head and the guiding function of the screw rod respectively.

[0026] As described above, the difference in diameter between the second opening and the first opening enables the separation of the screw head insertion and positioning function from the screw guide function, ensuring that the screw is not easily misaligned during assembly, reducing the difficulty of manual alignment, improving assembly efficiency, and thus avoiding the screw misalignment problem that is easily caused by traditional hole design.

[0027] Preferably, a mounting washer is fitted onto the screw of the fastening screw, and the mounting washer is located between the fastening nut and the side of the fixing block to distribute the pressure applied to the surface of the fixing block when the fastening nut is tightened.

[0028] As described above, the mounting washer can effectively distribute the pressure on the surface of the fixing pad when the fastening nut is tightened, prevent the surface of the pad from being crushed due to excessive local pressure, protect the structural integrity of the fixing pad, extend its service life, and ensure stable long-term tightening effect.

[0029] Preferably, the fastening steel strip is tightened and locked to the surface of the columnar structure by its own locking mechanism, wherein the locking mechanism is a toothed meshing locking structure or a bolt pressing locking structure.

[0030] As described above, the fastening steel band, through a locking mechanism involving toothed engagement or bolt tightening, can achieve a tight fit and reliable locking with the columnar structure, resisting the risk of loosening under complex working conditions such as vibration and impact, providing a stable installation base for the fixing pad, thereby ensuring the initial fixing strength of the entire fixing system.

[0031] Preferably, the outer side of the fixing pad is used to cooperate with the storage clamp for clamping and fixing, and the storage clamp is connected to the fixing pad through a fastening kit.

[0032] As described above, the design of the fixing pad and the storage clamp is designed to achieve a direct connection between the two through the fastening kit. This simplifies the traditional multi-part connection structure of "pad sleeve - C-type pad pad - clamp", reduces assembly steps, and allows the space inside the pad to support the direct operation of conventional general-purpose tools, thereby improving the overall efficiency and structural compactness of wire harness fixing.

[0033] Preferably, the aforementioned storage clamp is held between the outer wall of the aforementioned fixing pad and the aforementioned mounting washer, and a stable fixation is achieved by the pressure after the aforementioned fastening nut is tightened.

[0034] As described above, the storage clamp is held and fixed by the pressure of the fastening nut, which can form a stable constraint on the clamp and ensure that the wire harness does not shift or fall off under conditions such as vibration and impact. This avoids the risk of wire harness wear or signal transmission interruption caused by the insecure fixing of traditional clamps, thereby ensuring the stable operation of the electrical system. Attached Figure Description

[0035] With reference to the above objectives, the technical features of this utility model are clearly described in the following technical solutions, and its advantages are apparent from the following detailed description with reference to the accompanying drawings, which illustrate preferred embodiments of this utility model by way of example, without limiting the scope of the inventive concept.

[0036] Figure 1 This is a schematic diagram showing the overall structure of the fixing pad of the wire harness fixing device of this utility model.

[0037] Figure 2 This is a schematic diagram showing the state in which the fixing pad of the wire harness fixing device of this utility model is fixed relative to the columnar structure.

[0038] Figure 3 This is a schematic diagram showing the state in which the wire harness fixing device of this utility model is fixed relative to the columnar structure.

[0039] Symbol Explanation 1. Wire harness fixing device; 11. Fixing pads; 111 First opening; 112 Second opening; 113 Reinforcing ribs; 12. Fasten steel straps; 13 Fastening kit; 131 Fastening screw; 132 Fastening nut; 133 Install washers; KG storage clamps; GD columnar structure. Detailed Implementation

[0040] Various embodiments of the present invention will now be described in detail, examples of which are shown in the accompanying drawings.

[0041] Although this invention has been described in conjunction with exemplary embodiments, it should be understood that this specification is not intended to limit the invention to the exemplary embodiments described below. Rather, the invention is intended to cover not only these exemplary embodiments, but also various alternatives, modifications, equivalents, and other embodiments that may be included within the spirit and scope of the invention as defined by the appended claims.

[0042] The following is for reference Figure 1 The overall structure of the fixing pad 11, which is the main component of the wire harness fixing device 1 of this utility model, will be described.

[0043] like Figure 1 As shown, in the wire harness fixing device 1 of this utility model, the fixing pad 11 is formed by a high-strength metal through an integral sheet bending process, and is generally formed into a non-closed, roughly C-shaped shape.

[0044] This non-closed C-shaped configuration is not a completely rigid closed structure, but retains a gap at the end, thus ensuring a moderate degree of opening flexibility.

[0045] Specifically, when subjected to external forces such as the fastening steel strip 12 and the bonding with the columnar structure GD, the fixing pad 11 can adapt to the assembly operation through its own slight elastic deformation; at the same time, the continuity of the material can be ensured through the metal sheet bending process, and the fixing pad 11 is not easy to break, which can effectively take into account both the requirements of assembly flexibility and structural reliability.

[0046] In addition, a first opening 111 is provided in one side of the fixing pad 11, and a second opening 112 is provided in the other side opposite to the first opening 111. Through the cooperation of the first opening 111 and the second opening 112, the fastening kit 13 (including fastening screw 131, fastening nut 132, and mounting washer 133) can be precisely assembled.

[0047] The diameter of the first opening 111 is adapted to the diameter of the screw shank of the fastening screw 131, and is used to allow the screw shank of the fastening screw to be inserted, providing a passage for the screw shank.

[0048] The diameter of the second opening 112 is larger than that of the first opening 111, and it matches the head size of the fastening screw 131 for screw head insertion. Specifically, during assembly, the screw head of the fastening screw can be inserted into the second opening 112. This not only achieves pre-positioning of the screw and the fixing pad 11, but also, through the cooperation of the mounting washer 133 and the fastening nut 132, securely clamps the storage clamp KG to the outside of the fixing pad 11, ultimately achieving the function of fixing the wire harness.

[0049] In addition, such as Figure 1 As shown, all corners of the aforementioned fixing pad 11 have been chamfered to form a roughly rounded shape.

[0050] The advantages of this chamfer design are: on the one hand, it can eliminate stress concentration at the corners of the metal sheet after bending, effectively avoiding cracks caused by stress concentration under long-term vibration; on the other hand, during the assembly process (such as when fastening steel strip 12 is inserted or operating tools are inserted), it can fix the pad 11 to prevent scratching operators or other parts, thereby effectively improving the safety of use and the smoothness of operation.

[0051] Meanwhile, in order to enhance the structural strength of the fixing pad 11 and make it less prone to deformation when subjected to the locking force of the fastening kit, the reaction force of the columnar structure and the vibration load in the aviation scenario, the design of this utility model also provides reinforcing ribs 113 at each corner of the fixing pad 11.

[0052] These reinforcing ribs 113 are integrally formed through a metal sheet bending process: during the bending process, local sheet metal protrusion processing is performed on the stress concentration areas such as the corners and side walls of the fixing pad 11, so that the reinforcing ribs 113 are distributed in a "surrounding + array" manner, thereby effectively improving the bending and torsional deformation resistance of the fixing pad 11, and thus ensuring the structural stability during long-term service.

[0053] In this embodiment, reinforcing ribs 113 are integrally formed at the C-shaped upper edge, lower edge, and the junction of the two side walls of the fixing pad 11.

[0054] Specifically, two reinforcing ribs 113 are provided at each corner of the C-shape, for a total of eight reinforcing ribs 113, which can effectively improve the overall structural strength of the fixing pad 11.

[0055] In addition, the internal space dimensions of the aforementioned fixing pad 11 have been optimized: its width is adapted to the width of the fastening steel strip 12, which can ensure the smooth insertion of the fastening steel strip without generating too much gap; its height and depth dimensions take into account the operating dimensions of commonly used tools (such as wrenches and screwdrivers), allowing tools to easily reach into the fixing pad 11 to complete the assembly and adjustment of the fastening kit 13 without relying on special tools, thereby further simplifying the installation process.

[0056] Next, refer to Figure 2 and Figure 3 The specific operation of the wire harness fixing device 1 of this utility model will be described.

[0057] The entire assembly process mainly includes: fastening the steel strip and inserting the fixing pads; fitting the device to the columnar structure; tightening and locking the steel strip; and assembling the fasteners and clamps to fix the wire harness, which will be described in detail below.

[0058] like Figure 2As shown, the fixing pad 11 is made of high-strength metal and formed by an integral sheet bending process, forming an overall non-closed C-shaped structure. This structure has moderate elasticity, which can facilitate the insertion of the fastening steel strip 12 and adapt to the curvature of the surface through slight deformation when it is subsequently attached to the columnar structure. At the same time, reinforcing ribs 113 are distributed on the outer periphery of the fixing pad 11. These reinforcing ribs are integrally formed by sheet bending process and are distributed in a ring around the corners, side walls and other stress concentration areas of the pad, which can effectively improve the pad's resistance to bending and torsional deformation.

[0059] In the initial stage of operation, the fastening steel strip 12 is inserted into the internal space of the fixing pad 11 along the C-shaped opening direction. Since the C-shaped non-closed structure of the fixing pad 11 is precisely matched with the internal space size and the width of the fastening steel strip 12, the fastening steel strip 12 can be inserted smoothly without obvious jamming. After insertion is completed, the fastening steel strip 12 with the fixing pad 11 is wrapped around the surface of the columnar structure GD. At this time, the fixing pad 11 initially fits against the curved surface of the columnar structure GD along with the steel strip to facilitate the subsequent tightening operation.

[0060] Subsequently, the fastening steel strip 12 can be tightened using a conventional steel strip tightening tool (not shown in the figure): pulling the free end of the fastening steel strip 12, and utilizing the steel strip's own locking mechanism (such as toothed engagement, bolt tightening, or other conventional locking methods), the fastening steel strip 12 is tightly fitted to the surface of the columnar structure GD. During this process, the C-shaped elastic configuration of the fixing pad 11 can better adapt to the curvature of the columnar structure GD through slight deformation, thereby effectively ensuring the stability of the fit. The reinforcing rib 113 can effectively disperse the stress generated by the tightening of the steel strip, thereby preventing local deformation or damage to the fixing pad 11. After the fastening steel strip 12 is tightened and locked, the fixing pad 11 and the columnar structure GD form a stable fit, thus completing the initial fixation of the device on the columnar structure GD.

[0061] After tightening and locking the fastening steel band 12, proceed to the assembly stage of the fastening kit 13 and the storage clamp KG.

[0062] like Figure 3As shown, firstly, a storage clamp KG for fixing the wire harness (the object being fixed is hidden in the figure) is placed on the outside of the fixing pad 11; then, the fastening kit 13 is assembled. Specifically, after the screw of the fastening screw 131 is passed through the mounting hole of the storage clamp KG, it is inserted into the first opening 111 of the fixing pad 11, and the screw head of the fastening screw 131 is embedded in the second opening 112 of the fixing pad 11. The diameter of the first opening 111 is precisely matched with the diameter of the screw of the fastening screw 131 to provide a passage for the screw. The diameter of the second opening 112 is larger than that of the first opening 111 and matches the screw head size of the fastening screw 131, so as to achieve the pre-positioning of the screw and the fixing pad 11.

[0063] In the locking operation of the fastening kit 13, a conventional wrench (such as the open-end wrench shown in the figure) is used to cover the head of the fastening screw 131 located on one side of the fixing pad 11 and to fix the screw to prevent it from rotating; at the same time, on the other side of the fixing pad 11, a conventional ratchet wrench (hidden in the figure) is used to tighten the fastening nut 132.

[0064] During the tightening process, the installation washer 133 can disperse the pressure of the fastening nut 132 on the surface of the fixing pad 11, and prevent the surface of the pad from being crushed due to excessive local pressure.

[0065] In addition, the fastening nut 132 needs to be tightened according to the force requirements of fasteners in the aerospace field (e.g., a specific torque value) until the fastening kit 13 securely clamps the storage clamp KG to the outside of the fixing pad 11. At this point, the wire harness can be reliably secured by the storage clamp KG.

[0066] (Technical effect) The wire harness fixing device of this utility model, through its integrated structural design, can effectively solve the technical defects of traditional technical solutions, such as complex assembly, redundant weight, low reliability, and high cost. It can achieve significant improvements in assembly efficiency, lightweighting, structural stability, ease of operation, and safety.

[0067] Specifically, the fixing pad of this device is formed by bending a high-strength metal sheet into a non-closed C-shaped configuration. Unlike traditional solutions, it does not require step-by-step assembly and precise manual alignment, which can fundamentally eliminate the rework and adjustment problems caused by the misalignment of multiple parts. The opening elasticity retained by the C-shaped configuration allows for slight deformation adaptation when inserting the fastening steel strip and fitting the columnar structure, eliminating the need for repeated position calibration and effectively reducing assembly and adjustment time.

[0068] Meanwhile, the operating space for columnar structures such as landing gear is usually small. The integrated design of this device can avoid the cumbersome task of operators holding multiple micro parts, reduce the risk of parts falling, and the internal space of the fixing block takes into account the needs of commonly used tools. Assembly can be completed with a regular wrench or ratchet wrench without relying on special tools, which can further shorten the assembly time of a single fixing point, thereby significantly improving the overall assembly efficiency.

[0069] Furthermore, this device enhances reliability through multiple structural designs. The integrally molded reinforcing ribs at the corners of the fixing blocks are distributed in a ring-shaped, array-like manner, which effectively improves the blocks' resistance to bending and torsional deformation. It can withstand the locking force of the fastening kit, the reaction force of the columnar structure, and the high-frequency vibration loads in aerospace scenarios without easily deforming.

[0070] The chamfering of all corners not only eliminates stress concentration at the edges of bent sheet metal, preventing cracks from forming under long-term vibration, but also prevents scratches to operators or other parts during assembly. The elasticity of the C-shaped non-closed structure allows the fixing pad to adapt to the curvature of the curved surface through slight deformation when it fits the columnar structure, reducing the relative friction and impact caused by the gaps in the mating of traditional multi-part parts. This avoids wear on the mating surfaces, loosening or failure of locking parts caused by long-term vibration, and effectively prevents the overall loosening of the pad, displacement of the clamps and wear of the wiring harness, eliminating the risk of signal transmission interruption and ensuring the stable operation of the electrical system.

[0071] Although the structure and working principle of this utility model have been described above in conjunction with preferred embodiments, those skilled in the art should recognize that the above examples are merely illustrative and do not constitute a limitation on this utility model. Modifications and variations can be made to this utility model within the spirit and scope of the claims, and all such modifications and variations will fall within the protection scope of this utility model.

Claims

1. A wire harness fixing device (1) for fixing wire harnesses on the surface of a columnar structure (GD), characterized in that, The wire harness fixing device (1) includes a fixing pad (11). The fixing pad (11) is generally formed in the shape of a C. The internal space of the fixing pad (11) is for the fastening steel strip (12) to pass through and fix. A first opening (111) and a second opening (112) are respectively opened on the two opposite sides of the fixing pad (11). The first opening (111) is used for the thread of the fastening screw (131) to pass through, and its diameter is adapted to the thread diameter of the fastening screw (131). The second opening (112) is used for the screw head of the fastening screw (131) to be inserted, and its size is adapted to the screw head size of the fastening screw (131).

2. The wire harness fixing device (1) as described in claim 1, characterized in that, The fixing pad (11) is formed by a high-strength metal through an integral sheet bending process, forming an overall non-closed shape, and retaining a gap at the end. The space inside the fixing pad (11) is compatible with general tools.

3. The wire harness fixing device (1) as described in claim 2, characterized in that, The non-closed C-shaped configuration of the fixing pad (11) has an open elasticity. When the fastening steel strip (12) drives the fixing pad (11) to fit against the columnar structure (GD), the fixing pad (11) can adapt to the curvature of the columnar structure (GD) through its own elastic deformation.

4. The wire harness fixing device (1) as described in claim 3, characterized in that, Reinforcing ribs (113) are integrally formed at all corners of the fixed pad (11). The reinforcing ribs (113) are formed synchronously with the fixed pad (11) through a metal sheet bending process and are distributed in a ring around the stress concentration area of ​​the fixed pad (11).

5. The wire harness fixing device (1) as described in claim 4, characterized in that, All corners of the fixing pad (11) are chamfered and formed into rounded corners.

6. The wire harness fixing device (1) as described in claim 1, characterized in that, The diameter of the second opening (112) is larger than the diameter of the first opening (111) so as to realize the embedding and positioning function of the screw head of the fastening screw (131) and the guiding function of the screw rod of the fastening screw (131) respectively.

7. The wire harness fixing device (1) as described in claim 1, characterized in that, An installation washer (133) is fitted on the screw of the fastening screw (131). The installation washer (133) is located between the fastening nut (132) and the side of the fixing block (11) to disperse the pressure applied to the surface of the fixing block (11) when the fastening nut (132) is tightened.

8. The wire harness fixing device (1) as described in claim 1, characterized in that, The fastening steel strip (12) is tightened and locked to the surface of the columnar structure (GD) by its own locking mechanism, which is a toothed meshing locking structure or a bolt pressing locking structure.

9. The wire harness fixing device (1) as described in claim 7, characterized in that, The outer side of the fixing pad (11) is used to cooperate with the storage clamp (KG) for clamping and fixing. The storage clamp (KG) is connected to the fixing pad (11) through the fastening kit (13).

10. The wire harness fixing device (1) as described in claim 9, characterized in that, The storage clamp (KG) is held between the outer wall of the fixing pad (11) and the mounting washer (133), and is firmly fixed by the pressure after the fastening nut (132) is tightened.

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