Groove structure, oil tank assembly and oil tank wire harness arrangement method

Abstract

The invention relates to a groove structure, an oil tank assembly and an oil tank wire harness arrangement method. A main wire harness of the oil tank wire harness is arranged in a U-shaped groove structure on the upper surface of an oil tank; a corrugated pipe made of an outer coating material of the oil tank wire harness is locally deformed in a pressing mode and enters a hoop opening structure arranged in a U-shaped groove structure so as to fix the oil tank wire harness; and branch wire harnesses of the oil tank wire harness are branched from the main channel and are connected to an oil pump or a fuel oil liquid level sensor in the oil tank. Through the synergistic effect of the U-shaped groove structure and the C-shaped clamp opening structure in the groove, good fixing and assembling of the oil tank wire harness are achieved, the problem that the wire harness on the surface of the blow molding plastic oil tank cannot be fixed is solved, the oil tank wire harness is distributed into the main wire harness and the branch wire harness, and the wire harness fixing efficiency is improved. The oil tank wiring harness is embedded in the whole structure of the oil tank, and the problem that the wiring harness protrudes out of the surface of the oil tank and is too close to peripheral parts can be solved.

Description

Technical Field

[0001] The present application relates to the technical field of automobile parts, and in particular to a groove structure, a fuel tank assembly and a fuel tank wiring harness arrangement method. Background Art

[0002] With the rapid development of automobile manufacturing technology, automobile fuel tanks, as key components for storing fuel, have undergone profound changes from design to material selection. In early automobile design, metal fuel tanks were the mainstream fuel storage solution. These metal fuel tanks are not only sturdy in structure, but also exquisitely designed internally, capable of accommodating key electrical equipment such as fuel pumps, fuel level sensors and their corresponding piping systems. The fuel pump, as the core power source of the fuel system, is responsible for stably and efficiently delivering the fuel in the tank to the powertrain to ensure the normal operation of the engine and the power output of the vehicle. The fuel level sensor plays an important role in real-time monitoring of the amount of fuel in the tank. By accurately measuring and feeding back information to the driver, it effectively avoids driving interruptions caused by fuel exhaustion and improves driving safety and convenience.

[0003] In the design of traditional metal fuel tanks, in order to realize the functions of the fuel pump and fuel level sensor, they must be closely connected to the vehicle body wiring harness through the connecting harness. These harnesses are like the neural network of the fuel tank system, carrying the task of signal transmission to ensure that the fuel pump and sensor can accurately and timely respond to various working conditions of the vehicle. In order to prevent the wiring harness from loosening or falling off due to bumps and vibrations during vehicle driving, thereby affecting the normal operation of the fuel system, a series of metal bracket structures are usually welded on the surface of the metal fuel tank. These brackets are not only sturdy and durable, but also have specially designed holes on them for accurately fixing the wiring harness, ensuring that the wiring harness can maintain a stable connection under various complex working conditions, thereby ensuring the stable operation of the fuel system.

[0004] However, as the lightweight design and cost control of automobiles are increasingly valued, traditional metal fuel tanks have gradually revealed their disadvantages of heavy weight and high cost. Under this background, blow-molded plastic fuel tanks have gradually emerged in the automotive manufacturing industry with their significant advantages such as light weight, low cost and easy molding, and have gradually become the mainstream choice of fuel tanks in the automotive manufacturing industry. Compared with traditional metal fuel tanks, plastic fuel tanks have shown great potential in reducing the overall weight of vehicles and reducing production costs. However, due to its unique process and material properties, the surface of the blow-molded plastic fuel tank cannot be directly welded with a metal bracket or a corresponding fixed structure to fix the wiring harness like a metal fuel tank. This leads to the fuel tank wiring harness being loosely connected to the vehicle electrical equipment socket during vehicle driving due to vehicle vibration and unreliable fixation, affecting the function of the fuel system. This problem poses a great challenge to the fixation of the fuel tank wiring harness on the blow-molded plastic fuel tank, resulting in the inability to effectively fix the fuel tank wiring harness on the plastic fuel tank, which in turn affects the functional realization of the fuel pump and fuel level sensor connection harness.

[0005] Therefore, how to effectively solve the wiring harness fixation problem while maintaining the lightweight advantage of plastic fuel tanks has become a technical bottleneck and difficult problem that urgently needs to be broken through in the current field of automobile fuel tank design. Summary of the invention

[0006] Based on this, it is necessary to provide a groove structure, a fuel tank assembly and a fuel tank wiring harness layout method to address the above problems, so as to effectively solve the problem that the wiring harness on the surface of the blow-molded plastic fuel tank cannot be fixed, and the fuel tank wiring harness can be reasonably fixed in the wiring harness channel formed by the groove on the upper surface of the fuel tank. The fuel tank wiring harness is also divided into a main wiring harness and a branch wiring harness. The branch wiring harness is connected to the fuel pump or the fuel level sensor in the fuel tank, which meets the requirements of the wiring harness function of the fuel pump and the fuel level sensor, and the layout structure occupies a small space.

[0007] A groove structure is used for arranging a fuel tank wiring harness. The groove structure is U-shaped, arranged on the upper surface of the fuel tank and forms a wiring harness channel for accommodating the fuel tank wiring harness. The cross-sectional structural dimensions of the groove structure match the outer diameter dimensions of a corrugated pipe applied externally to the fuel tank wiring harness.

[0008] In one of the embodiments, the groove structure includes at least one U-shaped groove, and the fuel tank wiring harness is fastened and clamped by multiple clamp opening structures in the U-shaped groove to prevent the fuel tank wiring harness from jumping out of the groove structure when the vehicle vibrates.

[0009] In one of the embodiments, the groove structure includes a plurality of U-shaped groove segments, and a smooth transition is formed between every two groove segments to form a wiring harness channel, so as to facilitate continuous assembly and fixation of the fuel tank wiring harness in the groove structure.

[0010] A fuel tank assembly comprises a fuel tank and a fuel tank wiring harness. A groove structure is provided on the upper surface of the fuel tank, and the fuel tank wiring harness is arranged in the groove structure.

[0011] In one embodiment, the fuel tank wiring harness includes a fuel tank main wiring harness and a fuel tank branch wiring harness. The fuel tank main wiring harness is arranged in a main channel formed by a U-shaped groove structure. The fuel tank branch wiring harness branches out from the main channel and is connected to the fuel pump or the fuel level sensor in the fuel tank, thereby realizing the requirements of the fuel pump and fuel level sensor connection wiring harness functions.

[0012] In one of the embodiments, it also includes a fuel tank wiring harness fixing mechanism, which includes a fuel tank wiring harness fixing base bracket and a base bracket groove. The fuel tank wiring harness is fixed by a wiring harness sheet metal clamp, and the wiring harness sheet metal clamp is assembled and fixed to the base bracket groove to prevent the fuel tank wiring harness from moving along the axial direction of the wiring harness in the U-shaped groove structure.

[0013] A fuel tank wiring harness arrangement method comprises the following steps:

[0014] Arrange the main wiring harness of the fuel tank wiring harness in the U-shaped groove structure on the upper surface of the fuel tank;

[0015] The corrugated tube of the outer covering material of the fuel tank wiring harness is partially deformed by pressing, and enters the clamp opening structure arranged in the U-shaped groove structure to fix the fuel tank wiring harness;

[0016] Branch the branch harness of the fuel tank harness from the main channel and connect it to the fuel pump or fuel level sensor in the fuel tank.

[0017] In one of the embodiments, the clamp opening structure is C-shaped, and the opening size of the clamp opening structure is smaller than the outer diameter size of the corrugated tube of the outer covering material of the fuel tank wiring harness, so as to achieve an interference fit and prevent the wiring harness from jumping out of the U-shaped groove opening structure on the surface of the fuel tank when the vehicle vibrates.

[0018] In one embodiment, the following steps are also included:

[0019] Fix the wiring harness fixing base bracket at a flat position on the upper surface of the fuel tank;

[0020] Fix the fuel tank wiring harness in the groove structure of the wiring harness fixing base bracket through the built-in wiring harness sheet metal clip to prevent the fuel tank wiring harness from moving along the axial direction of the wiring harness in the U-shaped groove structure and play a role in supporting the wiring harness.

[0021] In one of the embodiments, the cross section of the U-shaped groove structure and the C-shaped clamp opening structure are designed to have a smooth chamfer transition to facilitate the assembly of the fuel tank wiring harness and avoid damage to the outer surface material of the fuel tank wiring harness.

[0022] The above-mentioned groove structure, fuel tank assembly and fuel tank wiring harness arrangement method, by designing a U-shaped groove structure on the upper surface of the fuel tank, and forming a wiring harness channel through multiple sections of the groove structure, is used to form a fuel tank wiring harness accommodating space. The fuel tank wiring harness wires are coated with a corrugated tube material. The corrugated tube has a wear-resistant effect. At the same time, because of its hard material and staggered wave crest and trough structure, it plays a supporting role for the internal wire accommodating space. The fuel tank wiring harness with an externally coated corrugated tube is arranged in the U-shaped groove structure channel on the upper surface of the blow-molded plastic fuel tank. The cross-sectional structural dimensions of the U-shaped groove structure match the outer diameter dimensions of the corrugated tube to prevent the wiring harness from shaking laterally in the U-shaped groove structure on the fuel tank surface when the vehicle vibrates;

[0023] This application also has the following advantages:

[0024] (1) In order to prevent the fuel tank wiring harness from moving along the axial direction of the wiring harness in the U-shaped groove structure, a wiring harness fixing base bracket is provided at a relatively flat position on the upper surface of the fuel tank. The wiring harness is fixed to the wiring harness fixing base bracket by a sheet metal clip, and at the same time plays a role in supporting the wiring harness;

[0025] (2) Multiple C-shaped clamp opening structures are arranged in the U-shaped groove structure channel. The opening size of the C-shaped clamp structure is smaller than the cross-sectional size of the U-shaped groove structure to prevent the wiring harness from jumping out of the U-shaped groove opening structure on the surface of the fuel tank when the vehicle vibrates;

[0026] (3) The C-shaped clamp opening structure on the upper surface of the fuel tank is designed with a smooth chamfer transition, which facilitates the assembly of the fuel tank wiring harness when the wiring harness is clamped into the U-shaped groove on the upper surface of the plastic fuel tank, and will not damage the outer surface material of the fuel tank wiring harness. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] FIG. 1 is a schematic diagram of the overall structure of the fuel tank wiring harness arrangement in one embodiment of the present invention.

[0028] FIG. 2 is a schematic structural diagram of a fuel tank harness fixing mechanism in an embodiment of the present invention.

[0029] Figure 3 Schematic diagram of the matching structure between the fuel tank wiring harness and the groove in one embodiment of the present invention.

[0030] Description of reference numerals:

[0031] 100, fuel tank assembly; 200, fuel tank wiring harness; 300, fuel tank first fuel pump; 400, fuel tank second fuel pump; 500, fuel tank wiring harness fixing mechanism;

[0032] 101, first C-shaped clamp opening structure; 102, second C-shaped clamp opening structure; 103, third C-shaped clamp opening structure; 104, fourth C-shaped clamp opening structure; 105, fifth C-shaped clamp opening structure; 106, sixth C-shaped clamp opening structure; 107, seventh C-shaped clamp opening structure; 108, eighth C-shaped clamp opening structure;

[0033] 110, first U-shaped groove; 120, second U-shaped groove; 130, third U-shaped groove;

[0034] 201. Fuel tank main wiring harness; 202. Fuel tank branch wiring harness; 203. Wiring harness sheet metal clip;

[0035] 501. Fuel tank wiring harness fixing base bracket; 502. Base bracket groove. DETAILED DESCRIPTION

[0036] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0037] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0038] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0039] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0040] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0041] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0042] Refer to FIG. 1 , which shows a schematic diagram of the overall structure of the fuel tank wiring harness arrangement in an embodiment of the present application.

[0043] The fuel tank assembly 100 provided in one embodiment of the present application is an important component of the vehicle fuel system, and includes a fuel tank, a fuel tank wiring harness 200, and other related components (not shown in the figure). In the fuel tank assembly 100 of the present application, a groove structure is added, and the groove structure is used to fix the fuel tank wiring harness 200 to ensure the stability and reliability of the fuel tank wiring harness 200 during the operation of the vehicle.

[0044] In some embodiments, the groove structure is U-shaped, arranged on the upper surface of the fuel tank, and forms a wiring harness channel for accommodating the fuel tank wiring harness. The cross-sectional structural dimensions of the groove structure in the present application match the outer diameter dimensions of the corrugated tube applied to the fuel tank wiring harness 200, ensuring that the fuel tank wiring harness 200 can be tightly embedded in the groove structure and is not easy to shake under various operating conditions.

[0045] In some embodiments, in order to further enhance the fixing effect of the wiring harness, a plurality of clamp opening structures are arranged in the groove structure, each clamp opening structure is C-shaped, and the opening size of the clamp opening is smaller than the outer diameter size of the corrugated tube of the outer covering material of the fuel tank wiring harness 200; thereby, when the fuel tank wiring harness 200 is pressed into the groove structure, the corrugated tube of the outer covering material of the fuel tank wiring harness 200 will be partially deformed, and the fuel tank wiring harness 200 and the clamp opening will have an interference fit, so that the fuel tank wiring harness 200 is fastened and clamped by the clamp opening structure; this interference fit design effectively prevents the fuel tank wiring harness 200 from jumping out of the groove structure when the vehicle vibrates.

[0046] In some embodiments, further, in order to meet the layout requirements of fuel tank harnesses 200 of different lengths, the present application has multiple U-shaped groove sections, and the multiple groove sections are smoothly transitioned to form a harness channel; the fuel tank harness 200 can be shuttled and fixed in the multiple groove sections as needed to ensure the flexibility and reliability of the layout. Referring to Figure 1, specifically, the groove structure in the present application includes:

[0047] A first U-shaped groove 110, a second U-shaped groove 120 and a third U-shaped groove 130;

[0048] Specifically, the first U-shaped groove 110, the second U-shaped groove 120 and the third U-shaped groove 130 are all arranged on the outer surface of the oil tank. At the same time, the first U-shaped groove 110, the second U-shaped groove 120 and the third U-shaped groove 130 are smoothly transitioned to form a wiring harness channel.

[0049] In some embodiments, the fuel tank wiring harness 200 includes a fuel tank main wiring harness 201 and a fuel tank branch wiring harness 202. The fuel tank main wiring harness 201 is arranged in the first U-shaped groove 110, the second U-shaped groove 120 and the third U-shaped groove 130 in sequence along its length direction, while the fuel tank branch wiring harness 202 branches out from the first U-shaped groove 110 and is respectively connected to the first fuel pump 300 and the second fuel pump 400 in the fuel tank, thereby meeting the functional requirements of the fuel pump and fuel level sensor connection harness.

[0050] In addition, in some embodiments, a fuel tank harness fixing mechanism 500 is also included, and the fuel tank harness fixing mechanism 500 includes: a fuel tank harness fixing base bracket 501 and a base bracket groove 502;

[0051] The fuel tank wiring harness fixing base bracket 501 is fixed at a relatively flat position on the upper surface of the fuel tank;

[0052] The base bracket groove 502 is arranged on the top of the fuel tank wire harness fixing base bracket 501 , and the wire harness sheet metal clip 203 of the fuel tank wire harness 200 is assembled in the base bracket groove 502 .

[0053] In a specific embodiment, the fuel tank harness fixing base bracket 501 is bonded to a flat position on the upper surface of the fuel tank.

[0054] In a specific embodiment, the fuel tank wiring harness 200 is fixed in the groove structure of the wiring harness fixing base bracket 501 by the wiring harness sheet metal clip 203. This design effectively prevents the fuel tank wiring harness 200 from moving along the axial direction of the wiring harness in the U-shaped groove structure, thereby maintaining the stability of the fuel tank wiring harness 200.

[0055] Please continue to refer to FIG. 1 . The present application provides a fuel tank assembly, which includes a fuel tank and a fuel tank wiring harness 200 , and the above-mentioned groove structure.

[0056] In some embodiments, the fuel tank wiring harness 200 includes a fuel tank main wiring harness and a fuel tank branch wiring harness; the fuel tank main wiring harness 201 is arranged in a main channel formed by a U-shaped groove structure, and the fuel tank branch wiring harness 202 branches out from the main channel and is connected to the oil pump or fuel level sensor in the fuel tank; this arrangement not only makes the direction of the wiring harness clearer and more orderly, but also greatly improves the reliability and safety of the wiring harness.

[0057] Please refer to FIG. 2, which shows a schematic diagram of the structure of the fuel tank harness fixing mechanism in an embodiment of the present application. In some embodiments, in order to prevent the fuel tank harness 200 from moving along the axial direction of the harness in the U-shaped groove structure, the fuel tank assembly 100 of the present application also includes a fuel tank harness fixing mechanism 500, and the harness fixing mechanism 500 includes a fuel tank harness fixing base bracket 501 and a base bracket groove 502. The fuel tank harness 200 is fixed in the base bracket groove 502 of the harness fixing base bracket 501 through the harness sheet metal clip 203 provided therewith; not only does it enhance the stability of the harness, but it also plays a role in supporting the harness, further improving the overall performance of the fuel tank assembly.

[0058] Please combine again Figure 3 As shown, Figure 3 A schematic diagram of the matching structure between the fuel tank wiring harness 200 and the groove in an embodiment of the present application is shown.

[0059] In some embodiments, a plurality of C-shaped clamp opening structures are provided in the groove structure, and the C-shaped clamp opening structures include a first C-shaped clamp opening structure 101, a second C-shaped clamp opening structure 102, a third C-shaped clamp opening structure 103, a fourth C-shaped clamp opening structure 104, a fifth C-shaped clamp opening structure 105, a sixth C-shaped clamp opening structure 106, a seventh C-shaped clamp opening structure 107 and an eighth C-shaped clamp opening structure 108; the opening sizes of the above eight clamp opening structures are all smaller than the outer diameter size of the corrugated tube of the outer covering material of the fuel tank wiring harness 200. When the fuel tank wiring harness 200 is pressed into the clamp opening structure, the corrugated tube will be partially deformed and fastened and clamped by these clamp opening structures, thereby realizing an interference fit between the fuel tank wiring harness 200 and the clamp opening structure.

[0060] In some embodiments, the outer corrugated tube of the fuel tank wiring harness 200 matches the cross-sectional dimensions of the groove structure, so that the wiring harness can be tightly embedded in the groove structure.

[0061] The present application also provides a fuel tank wiring harness arrangement method, the method comprising the following steps:

[0062] First, lay out the fuel tank main wiring harness 201:

[0063] First, the fuel tank main harness 201 of the fuel tank harness 200 is arranged in the U-shaped groove structure on the upper surface of the fuel tank; during this step, ensure that the cross-sectional dimensions of the fuel tank main harness 201 match the groove structure so as to be tightly embedded therein;

[0064] Second, fix the fuel tank harness 200:

[0065] Next, the outer covering material bellows of the fuel tank harness 200 is partially deformed by pressing and enters the clamp opening structure set in the U-shaped groove structure; this step needs to ensure that the bellows can be deformed smoothly and fastened by the clamp opening structure. At the same time, it is also necessary to check whether the opening size of the C-shaped clamp opening structure is smaller than the outer diameter of the bellows, so that an interference fit can be achieved between the opening structure and the outer covering bellows of the fuel tank harness 200.

[0066] Third, connect the fuel tank branch harness 202:

[0067] Finally, the fuel tank branch harness 202 of the fuel tank harness 200 is branched out from the main channel and connected to the fuel pump or fuel level sensor in the fuel tank. This step requires ensuring that the connection of the fuel tank branch harness 202 is firm and reliable and does not affect the layout and fixation of the fuel tank main harness 201.

[0068] The present application realizes the tight fixation of the fuel tank wiring harness 200 on the fuel tank surface by designing a U-shaped groove structure and a C-shaped clamp opening structure, thereby solving the problem that the wiring harness on the surface of the blow-molded plastic fuel tank cannot be fixed; at the same time, in the fuel tank wiring harness 200, the fuel tank main wiring harness 201 can be conveniently arranged in the groove structure and clamped with the clamp opening structure, and the fuel tank branch wiring harness 202 is connected to the fuel pump or the fuel level sensor in the fuel tank, meeting the functional requirements of the fuel pump and the fuel level sensor connection wiring harness; then, the groove structure is embedded in the inner side of the overall structure of the fuel tank, and will not It takes up extra space and occupies little space; then, the cooperation of multiple sections of U-shaped grooves formed by the first U-shaped groove 110, the second U-shaped groove 120 and the third U-shaped groove 130 enhances the stability of the wiring harness, and by adding a fuel tank wiring harness fixing mechanism 500, it plays a supporting role for the fuel tank wiring harness 200; finally, the cross-section of the U-shaped groove structure of the present application and the C-shaped clamp opening structure are designed to be a smooth chamfered transition, which facilitates the assembly of the fuel tank wiring harness 200 and avoids damage to the outer surface material of the fuel tank wiring harness 200.

[0069] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0070] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A groove structure for arranging a fuel tank wiring harness, characterized in that: The groove structure is U-shaped, arranged on the upper surface of the fuel tank and forming a harness channel for accommodating the fuel tank harness. The cross-sectional structural dimensions of the groove structure match the outer diameter dimensions of the corrugated pipe applied externally to the fuel tank harness.

2. The groove structure according to claim 1, characterized in that: The groove structure includes at least one U-shaped groove, and the fuel tank wiring harness is fastened and clamped through multiple clamp opening structures in the U-shaped groove to prevent the fuel tank wiring harness from jumping out of the groove structure when the vehicle vibrates.

3. The groove structure according to claim 2, characterized in that: The groove structure includes a plurality of U-shaped groove segments, and a smooth transition is formed between every two groove segments to form a wiring harness channel.

4. A fuel tank assembly, comprising a fuel tank and a fuel tank wiring harness, characterized in that: The upper surface of the fuel tank is provided with a groove structure as described in any one of claims 1 to 3, and the fuel tank wiring harness is arranged in the groove structure.

5. The fuel tank assembly according to claim 4, characterized in that: The fuel tank wiring harness includes a fuel tank main wiring harness and a fuel tank branch wiring harness. The fuel tank main wiring harness is arranged in a main channel formed by a U-shaped groove structure. The fuel tank branch wiring harness branches out from the main channel and is connected to the fuel pump or the fuel level sensor in the fuel tank.

6. The fuel tank assembly according to claim 4 or 5, characterized in that: It also includes a fuel tank wiring harness fixing mechanism, which includes a fuel tank wiring harness fixing base bracket and a base bracket groove. The fuel tank wiring harness is fixed by a wiring harness sheet metal clamp, and the wiring harness sheet metal clamp is assembled and fixed to the base bracket groove to prevent the fuel tank wiring harness from moving along the axial direction of the wiring harness in the U-shaped groove structure.

7. A method for arranging a fuel tank wiring harness, characterized in that: The following steps are involved: Arrange the main wiring harness of the fuel tank wiring harness in the U-shaped groove structure on the upper surface of the fuel tank; The corrugated tube of the outer covering material of the fuel tank wiring harness is partially deformed by pressing, and enters the clamp opening structure arranged in the U-shaped groove structure to fix the fuel tank wiring harness; Branch the branch harness of the fuel tank harness from the main channel and connect it to the fuel pump or fuel level sensor in the fuel tank.

8. The method for arranging the fuel tank wiring harness according to claim 7, characterized in that: The clamp opening structure is C-shaped, and the opening size of the clamp opening structure is smaller than the outer diameter size of the corrugated tube of the outer covering material of the fuel tank wiring harness, so as to achieve an interference fit and prevent the wiring harness from jumping out of the U-shaped groove opening structure on the fuel tank surface when the vehicle vibrates.

9. The method for arranging the fuel tank wiring harness according to claim 7 or 8, characterized in that: The following steps are also included: Fix the wiring harness fixing base bracket at a flat position on the upper surface of the fuel tank; Fix the fuel tank wiring harness in the groove structure of the wiring harness fixing base bracket through the built-in wiring harness sheet metal clip to prevent the fuel tank wiring harness from moving along the axial direction of the wiring harness in the U-shaped groove structure and play a role in supporting the wiring harness.

10. The method for arranging the fuel tank wiring harness according to claim 7 or 8, characterized in that: The cross section of the U-shaped groove structure and the C-shaped clamp opening structure are designed to be smoothly chamfered to facilitate the assembly of the fuel tank wiring harness and avoid damage to the outer surface material of the fuel tank wiring harness.

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