A front fork arm and vehicle body connecting structure and vehicle

Abstract

The application belongs to the technical field of automobile parts, and particularly relates to a front upper fork arm and vehicle body connecting structure and vehicle, which comprises a nut, a connecting bolt and a clamping structure fixed on the vehicle body. The nut comprises a square boss and a disc boss, the square boss is fixed on the end face of the disc boss, the clamping structure comprises a mounting plate, the normal line of the surface of the mounting plate coincides with the central axis of the mounting through hole, the upper part of the mounting plate is provided with a guide groove, the square boss is clamped in the guide groove, the disc boss is located between the mounting plate and the vehicle body, and the connecting bolt is screwed with the nut through the mounting through hole. The purpose is to: through the cooperation of the nut composed of the square boss and the disc boss and the clamping structure provided with the guide groove, the independent nut design is adopted, the problem that it is difficult to repair or the repair cost is high when the thread is damaged is avoided, the cooperation of the nut and the clamping structure on the vehicle body is utilized, the fixing of the nut is completed, and the subsequent installation of the connecting bolt is more convenient.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of automobile parts, and particularly relates to a front upper fork arm and vehicle body connecting structure and vehicle. BACKGROUND

[0002] With the improvement of people's driving comfort, more and more new energy electric vehicles use double fork arm independent suspensions in the front suspension structure, but the following problems are found in the assembly process of the front upper fork arm assembly and the vehicle body in the project application.

[0003] 1. If aluminum alloy internal threads are directly used on the fork arm or the vehicle body, when the threads are damaged, it is difficult to repair or the repair cost is high.

[0004] 2. If the nut is designed independently of the vehicle body, an additional person is needed to fix the nut outside the engine compartment during assembly, and another person is needed to tighten the bolt inside the engine compartment, resulting in increased labor costs. SUMMARY

[0005] The purpose of the application is to provide a front upper fork arm and vehicle body connecting structure, which cooperates the nut composed of a square boss and a disc boss with the clamping structure provided with a guide groove, adopts an independent nut design, avoids the problem of difficult repair or high repair cost when the threads are damaged, and fixes the nut by cooperating the nut with the clamping structure on the vehicle body, so that the subsequent connection bolt installation is more convenient.

[0006] To achieve the above technical purpose, the technical scheme adopted by the application is as follows:

[0007] A front upper fork arm and vehicle body connecting structure, comprising a nut, a connecting bolt and a clamping structure fixed on a vehicle body,

[0008] An installation through hole is formed in the vehicle body,

[0009] The nut comprises a square boss and a disc boss, and the square boss is fixed on the end face of the disc boss,

[0010] The clamping structure is in the shape of a Chinese character, and comprises an installation plate, and the normal line of the surface of the installation plate coincides with the central axis of the installation through hole,

[0011] A guide groove is formed in the upper part of the installation plate,

[0012] The square boss is clamped in the guide groove,

[0013] The disc boss is located between the installation plate and the vehicle body,

[0014] The connecting bolt is screwed with the nut through the installation through hole.

[0015] Further limit, the square boss and the disc boss are integrally formed. Such structure design, through the integrally formed setting of the square boss and the disc boss, simple process, convenient manufacturing, strong practicability.

[0016] Further limit, the square boss is provided with a fillet at the corner position, and the fillet is coplanar with the circumferential surface of the disc boss.

[0017] Further limit, the mounting plate is provided with an arc-shaped blocking groove at the bottom of the guide groove, and when the fillet of the square boss abuts against the arc-shaped blocking groove, the central axis of the nut coincides with the central axis of the mounting through hole. Such structure design, through the mutual cooperation of the arc-shaped blocking groove and the fillet, instead of the contact between the lower end surface of the square boss and the bottom wall of the guide groove, so as to form the longitudinal positioning of the nut, reduce the requirement for manufacturing precision, and the practicability is stronger.

[0018] Further limit, the connecting bolt comprises a screw rod and a head structure, and the screw rod is provided with a guide structure at the end away from the head structure. Such structure design, through the setting of the guide structure, when installing, the guide structure can first penetrate into the nut, complete the positioning between the connecting bolt and the nut, and then facilitate the subsequent operation of screwing the connecting bolt into the nut, and the practicability is strong.

[0019] Further limit, the head structure is a hexagonal head with a flat washer.

[0020] Further limit, the guide structure is a circular truncated cone, and the diameter of the circular truncated cone is smaller than the outer diameter of the threaded portion of the connecting bolt. Such structure design, through the circular truncated cone constituting the guide structure of the connecting bolt, only the end of the conventional connecting bolt needs to be cut into a circular truncated cone during manufacturing, simple process, convenient manufacturing, and strong practicability.

[0021] The application also discloses a vehicle comprising a vehicle body and the front upper fork arm and vehicle body connecting structure.

[0022] The application adopting the above technical scheme has the following advantages:

[0023] 1. By the cooperation of the nut composed of square boss and disc boss and the clamping structure with guide groove, the independent nut design is adopted, the problem of difficult repair or high repair cost after thread damage is avoided, the cooperation of the nut and the clamping structure on the vehicle body is utilized, the fixing of the nut is completed, and the subsequent installation of connecting bolt is more convenient;

[0024] 2. By the cooperation of the arc-shaped blocking groove and the fillet, the lower end surface of the square boss is replaced with the bottom wall of the guide groove, so that the longitudinal positioning of the nut is formed, the requirement for manufacturing precision is reduced, and the practicality is higher;

[0025] 3. By the cooperation of the arc-shaped blocking groove and the fillet, the lower end surface of the square boss is replaced with the bottom wall of the guide groove, so that the longitudinal positioning of the nut is formed, the requirement for manufacturing precision is reduced, and the practicality is higher;

[0026] 4. By the cooperation of the arc-shaped blocking groove and the fillet, the lower end surface of the square boss is replaced with the bottom wall of the guide groove, so that the longitudinal positioning of the nut is formed, the requirement for manufacturing precision is reduced, and the practicality is higher; BRIEF DESCRIPTION OF DRAWINGS

[0027] The application can be further illustrated by the non-limiting examples shown in the accompanying drawings;

[0028] Figure 1 It is an assembly explosion schematic view of the front upper arm assembly and the vehicle body part in the embodiment of the application;

[0029] Figure 2 It is a bottom view structural schematic view of the front upper arm assembly and the vehicle body part after assembly in the embodiment of the application;

[0030] Figure 3 It is a top view structural schematic view of the front upper arm assembly and the vehicle body part after assembly in the embodiment of the application;

[0031] Figure 4 It is a structural schematic view of the nut part in the embodiment of the application;

[0032] Figure 5 It is a structural schematic view of the connecting bolt part in the embodiment of the application;

[0033] Figure 6 It is a structural schematic view of the vehicle body part in the embodiment of the application;

[0034] Figure 7 It isFigure 6 Enlarged structural diagram at point A;

[0035] Figure 8 This is a schematic cross-sectional view of the front upper fork arm and vehicle body connection structure of the present invention, and the front upper fork arm assembly and vehicle body after assembly in a vehicle embodiment.

[0036] The symbols for the main components are explained below:

[0037] 1. Nut; 2. Connecting bolt; 3. Vehicle body; 4. Front upper fork assembly; 5.

[0038] Square boss 1-1, round boss 1-2

[0039] Guide structure 2-1, head structure 2-2

[0040] Connecting boss 3-1, guide groove 3-2, and arc-shaped retaining groove 3-3. Detailed Implementation

[0041] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that similar or identical parts are referred to by the same reference numerals in the drawings or description. Implementations not shown or described in the drawings are forms known to those skilled in the art. In addition, directional terms mentioned in the embodiments, such as "up," "down," "top," "bottom," "left," "right," "front," and "back," are only for reference to the directions in the drawings and are not intended to limit the scope of protection of the present invention.

[0042] like Figures 1-8 As shown, a front upper fork arm connection structure of the present invention includes a nut 1, a connecting bolt 2, and a locking structure fixedly mounted on the vehicle body 3.

[0043] Mounting holes are provided on vehicle body 3.

[0044] Nut 1 includes an integrally formed square boss 1-1 and a disc boss 1-2. The square boss 1-1 is fixedly set on the end face of the disc boss 1-2. The corners of the square boss 1-1 are rounded, and the rounded corners are coplanar with the circumferential surface of the disc boss 1-2.

[0045] The mounting structure is U-shaped and includes a mounting plate. The normal line of the mounting plate coincides with the central axis of the mounting through hole. A guide groove 3-2 is provided on the upper part of the mounting plate. A square boss 1-1 is engaged in the guide groove 3-2, and a disc boss 1-2 is located between the mounting plate and the vehicle body 3.

[0046] The mounting plate has an arc-shaped retaining groove 3-3 at the bottom of the guide groove 3-2. When the rounded corner of the square boss 1-1 rests against the arc-shaped retaining groove 3-3, the central axis of the nut 1 coincides with the central axis of the mounting hole.

[0047] The connecting bolt 2 comprises a screw rod and a head structure 2-2, the screw rod is provided with a guide structure 2-1 at an end away from the head structure 2-2, the guide structure 2-1 is a circular truncated cone, the diameter of the circular truncated cone is smaller than the outer diameter of the threaded part of the connecting bolt 2, the head structure 2-2 is a hexagonal head with a flat washer, and the connecting bolt 2 is screwed with the nut 1 through the mounting through hole.

[0048] A vehicle comprises a vehicle body 3 and the front upper fork arm connecting structure, the vehicle body 3 is integrally formed with a connecting boss 3-1, the mounting through hole penetrates the connecting boss 3-1, and the connecting boss 3-1 is located between the vehicle body 3 and the clamping structure.

[0049] In the embodiment, during installation, the nut 1 is clamped into the clamping structure, so that the square boss 1-1 is clamped in the guide groove 3-2, until the fillet of the square boss 1-1 abuts against the arc-shaped blocking groove 3-3, and the disc boss 1-2 is located between the mounting plate and the vehicle body 3.

[0050] The front upper fork arm assembly 6 is placed in the vehicle body 3, the connecting bolt 2 is inserted from the inner side of the front upper fork arm assembly 6, so that the guide structure 2-1 of the connecting bolt 2 penetrates the upper fork arm assembly 6, the mounting through hole, and is arranged in the nut 1, and then the head structure 2-2 of the connecting bolt 2 is tightened to tighten the connecting bolt 2.

[0051] The above describes in detail the front upper fork arm connecting structure and the vehicle. The description of the specific embodiments is only used to help understand the method and the core idea of the present application. It should be pointed out that, for those skilled in the art, without departing from the principle of the present application, some improvements and modifications can be made to the present application, and these improvements and modifications also fall within the protection scope of the present application.

Claims

1. A front upper fork arm and vehicle body connecting structure, comprising a nut (1), a connecting bolt (2) and a clamping structure fixedly arranged on a vehicle body (3), wherein the vehicle body (3) is provided with a mounting through hole, the nut (1) comprises a square boss (1-1) and a disc boss (1-2), the square boss (1-1) is fixedly arranged on the end face of the disc boss (1-2), the clamping structure is in the shape of a Chinese character, the clamping structure comprises a mounting plate, the normal line of the surface of the mounting plate coincides with the central axis of the mounting through hole, the upper part of the mounting plate is provided with a guide groove (3-2), the square boss (1-1) is clamped in the guide groove (3-2), the disc boss (1-2) is located between the mounting plate and the vehicle body (3), the connecting bolt (2) is screwed with the nut (1) through the mounting through hole, the square boss (1-1) and the disc boss (1-2) are integrally formed, the corner position of the square boss (1-1) is provided with a fillet, the fillet is coplanar with the circumferential surface of the disc boss (1-2), the mounting plate is provided with an arc-shaped blocking groove (3-3) at the bottom of the guide groove (3-2), when the fillet of the square boss (1-1) abuts against the arc-shaped blocking groove (3-3), the central axis of the nut (1) coincides with the central axis of the mounting through hole. The connecting bolt (2) comprises a screw rod and a head structure (2-2), the screw rod is provided with a guide structure (2-1) at the end away from the head structure (2-2). characterized in that The head structure (2-2) is a hexagonal head with a flat washer. The guide structure (2-1) is a circular truncated cone, the diameter of the circular truncated cone is smaller than the outer diameter of the threaded part of the connecting bolt (2). A front upper fork arm and vehicle body connecting structure according to any one of claims 1-4, the vehicle body (3) is integrally formed with a connecting boss (3-1), the mounting through hole penetrates the connecting boss (3-1), and the connecting boss (3-1) is located between the vehicle body (3) and the clamping structure. ​ ​ ​ ​ ​ ​ 2. The structure according to claim 1, wherein: ​ 3. The structure according to claim 2, wherein: ​ 4. The structure according to claim 2, wherein: ​ 5. A vehicle characterized by: ​

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