Buckle and commercial vehicle

Abstract

The utility model provides a buckle and a commercial vehicle. The buckle comprises a first connecting part, a middle part and a second connecting part which are sequentially connected, the first connecting part is provided with ribs extending in the axial direction of the first connecting part, n ribs are evenly distributed in the circumferential direction of the first connecting part, n is larger than or equal to 1, and external threads are arranged on the outer surface of the second connecting part. According to the novel buckle, the two connecting parts (one of the connecting parts is the second connecting part made of the metal material) and the middle part are formed into a whole through injection molding, the problem that back mounting cannot be achieved due to the fact that mounting points suitable for clamping connection of plastic parts cannot be pressed on a front face cover is solved, effective connection of SMC molded parts and sheet metal parts can be achieved, and the service life of the buckle is prolonged. And the processing technology requirements of SMC molded parts are met.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and in particular to a buckle and a commercial vehicle. Background Technology

[0002] The front cover is the main part of the commercial vehicle's front bumper, and it needs to be connected to corner panels and a body mounting plate. Currently, the front cover is an injection-molded part, while the body mounting plate is a sheet metal part. The front cover is connected to the corner panels and the body mounting plate via clips. The existing clips are all plastic, and the back of the injection-molded front cover can be pressed to create mounting points for engagement with these plastic clips.

[0003] On the one hand, because injection-molded parts are prone to aging and have low hardness, they can no longer meet the operating conditions of current commercial vehicles when used as front covers. Therefore, the material of the front cover needs to be optimized to SMC (Sheet Molding Compound) molding. However, the back of the SMC molding part cannot be pressed to create mounting points suitable for plastic clips (it can only create mounting points suitable for metal parts), making it impossible for the molded front cover to be back-mounted. If front-mounted, the mounting points will be exposed, affecting the aesthetics. On the other hand, the existing plastic clips are snap-fit ​​at both ends. When subjected to a certain external force, the clips are easy to detach, causing the two connecting parts to separate and affecting the normal use of commercial vehicles. Utility Model Content

[0004] The purpose of this utility model is to provide a buckle and a commercial vehicle that can effectively connect SMC molded front cover, corner plates and body mounting plates.

[0005] The technical solution of this utility model is: a buckle, comprising a first connecting part, a middle part and a second connecting part connected in sequence, wherein the first connecting part is provided with ribs extending axially along the first connecting part, and n ribs are evenly distributed along the circumference of the first connecting part, where n≥1, and the outer surface of the second connecting part is provided with external threads.

[0006] In the above solution, a brand-new buckle is designed, with two connecting parts (one of which is a second connecting part made of metal) and the middle part injection molded into one piece. This solves the problem that the front cover cannot be pressed to fit the mounting points of the plastic parts, thus preventing back mounting. It can achieve effective connection between SMC molded parts and sheet metal parts, and meet the processing requirements of SMC molded parts. Furthermore, the second connecting part is provided with external threads to achieve threaded connection with the front cover, which is more stable than snap-fit.

[0007] Preferably, the number of ribs n≥2, and the included angle between two adjacent ribs is equal to 360° divided by n.

[0008] Preferably, the rib is a multi-circular arc segment with varying diameter in its axial extension.

[0009] Preferably, the radial cross-section of the rib is rectangular.

[0010] Preferably, the middle part is a polygonal prism, such as a square prism, hexagonal prism, or octagonal prism.

[0011] Preferably, the second connecting part is a hexagonal bolt, with the bolt head located inside the middle part and the bolt extending to the outside of the middle part.

[0012] This utility model also provides a commercial vehicle, including a front cover, corner plates, a body mounting plate, and the aforementioned buckles. The second connecting part on the buckle is connected to the front cover, and the corner plates and the body mounting plate are respectively connected to the front cover through the first connecting parts on the buckles at corresponding positions.

[0013] Compared with related technologies, the beneficial effects of this utility model are as follows:

[0014] 1. Design a brand new buckle, with two connecting parts (one of which is a metal second connecting part) and the middle part injection molded into one piece, which solves the problem that the front cover cannot be pressed to fit the mounting points of the plastic parts and therefore cannot be back mounted. It can realize the effective connection between SMC molded parts and sheet metal parts and meet the processing requirements of SMC molded parts.

[0015] Second, the buckle and the front cover are connected by threads, which provides better stability compared to snap-fit.

[0016] Third, the buckle adopts a combination of standard bolts and plastic, which ensures fastening while solving the problem that the front cover of SMC molding cannot be back mounted, avoiding exposed mounting points and ensuring aesthetics;

[0017] IV. The ribs of the first connecting part on the buckle are evenly distributed around the circumference to ensure the stability of the snap-fit ​​installation structure;

[0018] Fifth, it enables the front cover to be processed by SMC molding, improving the anti-aging performance and hardness of the front cover. Attached Figure Description

[0019] Figure 1 A schematic diagram of the buckle provided by this utility model;

[0020] Figure 2 for Figure 1 The diagram on the left;

[0021] Figure 3 for Figure 1 The diagram on the right;

[0022] Figure 4 An exploded view of the front cover, corner panels, body mounting plates, and buckles in a commercial vehicle provided by this utility model.

[0023] In the attached diagram: 1. Buckle; 11. First connecting part; 12. Middle part; 13. Second connecting part; 111. Rib; 2. Front cover; 3. Corner plate; 4. Body mounting plate. Detailed Implementation

[0024] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of the present invention can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" appearing below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.

[0025] like Figure 1 As shown, the buckle provided in this embodiment includes a first connecting part 11, a middle part 12, and a second connecting part 13 connected in sequence.

[0026] like Figure 1 , Figure 2 As shown, the first connecting portion 11 is provided with axially extending ribs 111. There are n ribs 111 evenly distributed along the circumference of the first connecting portion 11, where n ≥ 1. The included angle between two adjacent ribs 111 is equal to 360° divided by n. In this embodiment, n = 4. The distribution angle of the four ribs 111 is 90°.

[0027] The rib 111 extends axially as a multi-circular arc segment with varying diameter. That is, as... Figure 2 As shown, the variable-diameter multi-arc segment refers to the change in radial width between the multiple ribs 111: it gradually increases and then gradually decreases from the middle part 12, so that the end of the first connecting part 11 furthest from the middle part 12 is first inserted into the mounting hole with a clearance fit. Then, the mounting hole crosses the arc segment with the largest radial width with a tight fit. Finally, the mounting hole is engaged at the arc segment with the smaller radial width near the middle part 12 to complete the installation. At this time, the arc segment with the largest radial width can limit the mounting hole and prevent it from axially dislodging. In addition, as Figure 4 As shown, in order to avoid the wobbling of the angle plate 3, its mounting hole can be designed to have a certain axial length, and the inner wall of the mounting hole can be adapted to the partial diameter change structure of the first connecting part 11.

[0028] like Figure 2 As shown, the radial cross-section of the rib 111 is rectangular. The first connecting part 11 and the middle part 12 are injection molded parts.

[0029] The middle portion 12 is a polygonal prism. In this embodiment, the middle portion 12 is a hexagonal prism.

[0030] like Figure 1 , Figure 3 As shown, the outer surface of the second connecting part 13 is provided with external threads. In this embodiment, the second connecting part 13 is selected as a standard hexagonal bolt, with its bolt head located inside the middle part 12, and is connected as one piece during injection molding to form an effective combination between the plastic and the standard part.

[0031] like Figure 4 As shown, this utility model also provides a commercial vehicle, including a front cover 2, corner plates 3, a body mounting plate 4, and the aforementioned buckle 1. The second connecting portion 13 on the buckle 1 is threadedly connected to the front cover 2. The first connecting portion 11 on the buckle 1 at the corresponding position on the front cover 2 is engaged in the corresponding mounting hole of the corner plate 3; the first connecting portion 11 on the buckle 1 at the corresponding position is engaged in the corresponding mounting hole of the body mounting plate 4.

[0032] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A buckle, characterized in that, It includes a first connecting part (11), a middle part (12) and a second connecting part (13) made of metal connected in sequence. The first connecting part (11) is provided with ribs (111) extending axially along the first connecting part (11). There are n ribs (111) evenly distributed along the circumference of the first connecting part (11), where n≥1. The outer surface of the second connecting part (13) is provided with external threads.

2. The buckle according to claim 1, characterized in that, The number of the ribs (111) is n≥2, and the included angle between two adjacent ribs (111) is equal to 360° divided by n.

3. The buckle according to claim 1, characterized in that, The rib (111) is a multi-circular arc segment with varying diameter in its axial extension.

4. The buckle according to claim 1, characterized in that, The radial cross section of the rib (111) is rectangular.

5. The buckle according to claim 1, characterized in that, The middle part (12) is a polygonal column.

6. The buckle according to claim 1, characterized in that, The second connecting part (13) is a hexagonal bolt, with its bolt head located inside the middle part (12) and its screw extending to the outside of the middle part (12).

7. A commercial vehicle, comprising a front grille (2), corner panels (3), and a body mounting plate (4), characterized in that, It also includes a buckle as described in any one of claims 1-6, wherein a second connecting part (13) on the buckle is connected to the front cover (2), and the corner plate (3) and the body mounting plate (4) are respectively connected to the front cover (2) through a first connecting part (11) on a buckle at a corresponding position.

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