Automobile door sill trim part

Abstract

A car door sill trim includes a door sill body, a front bracket, a rear bracket, and a large-span mounting bracket. The large-span mounting bracket includes a large-span connecting bridge (composed of an upper connecting part, a snap-fit ​​mounting part, an L-shaped reinforcing part, and a lower connecting part) and a vertical plate. The root of the upper connecting part connects to a rounded corner near the edge of the door sill body, and the other end of the upper connecting part connects to the snap-fit ​​mounting part. The snap-fit ​​mounting part connects to the vertical part of the L-shaped reinforcing part. The horizontal part of the L-shaped reinforcing part is located below the snap-fit ​​mounting part and connects to the lower connecting part. A reinforcing plate is provided on the L-shaped reinforcing part between the vertical and horizontal parts. The root of the lower connecting part connects to a rounded corner near the middle of the door sill body. A gap is reserved between the lower end of the vertical plate and the door sill body, and the upper end connects to the large-span connecting bridge. This car door sill trim can meet the requirements of high appearance quality after painting and ensure structural strength. Moreover, the door sill trim is a one-piece single-panel structure, which is inexpensive.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts technology, specifically relating to an automotive door sill trim. Background Technology

[0002] Many car models now feature plastic door sill trim. These trims, with their unique designs, can help reduce wind resistance during driving. However, door sill trim is easily stepped on when people get in and out of the car. Compared to painted metal door sills, plastic door sills are easier to repair after scratches, and even if damaged, replacement is more economical.

[0003] There are two surface treatment processes for plastic door sill trims: painting and leather-textured finishes. In recent years, with the increasing demand for personalized car models, painted door sill trims have become increasingly popular due to their diverse colors and glossy appearance. However, painted door sill trims are very sensitive to structural shrinkage issues, as the structure fixed to the sheet metal cannot be directly connected to the surface of the trim. Typically, to ensure a good appearance, painted door sills require an additional inner panel structure that fits the body sheet metal, adding a set of inner panel molds. This significantly increases the cost of the parts and makes them unsuitable for today's highly competitive market.

[0004] In existing technologies, low-cost door sill trim pieces, i.e., single-panel door sill structures, require a mounting bracket (also called a "doghouse") on the door sill's outer surface. This bracket is placed on the sill and secured to the vehicle body sheet metal via clips. However, the direct connection between the bracket's base and the trim piece's outer surface inevitably leads to shrinkage, reducing the perceived quality of the door sill. For example, in CN205573830U (a car side skirt), CN202201065U (a car side skirt and sheet metal fixing structure), and CN220053693U (a car door trim piece, door sill trim piece, and their matching structures), the bracket's base is directly connected to the trim piece's outer surface, causing shrinkage that significantly reduces perceived quality. Therefore, developing a door sill trim piece that satisfies high post-painting appearance quality, ensures structural strength, and is cost-effective is crucial. Summary of the Invention

[0005] In view of the shortcomings and deficiencies of the existing technology, the purpose of this utility model is to provide an automotive door sill trim. This door sill trim adjusts the connection position between the base of the door sill and the exterior surface. By designing a large-span door sill, the connection between the base of the door sill and the rounded corners of the shape is ensured. The inner panel structure is eliminated without affecting the appearance. At the same time, a stepped L-shaped reinforcing part and a vertical plate are set on the large-span door sill to ensure the structural strength of the door sill. For the special shape structure at the front and rear ends of the door sill trim, where it is impossible to arrange the large-span door sill, small welded brackets are set to ensure the appearance quality.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A car door sill trim includes a door sill body, front and rear supports at both ends of the door sill body, and multiple large-span brackets on the door sill body. The door sill body is a single-panel structure. Each large-span bracket includes a large-span connecting bridge and a vertical plate. The large-span connecting bridge includes an upper connecting part, a snap-fit ​​mounting part, an L-shaped reinforcing part, and a lower connecting part. The root of the upper connecting part connects to a rounded corner near the edge of the door sill body, and the wall thickness near the connection point is controlled at 0.8-0.85mm. The other end of the upper connecting part connects to the snap-fit ​​mounting part, and the included angle between them is obtuse. The snap-fit ​​mounting part connects to the vertical part of the L-shaped reinforcing part, and a [missing information - likely a mounting plate or bracket] is installed on the snap-fit ​​mounting part. It has a buckle; the horizontal part of the L-shaped reinforcing part is located below the buckle mounting part, the horizontal part is connected to the lower connecting part, and the included angle between them is an obtuse angle. A reinforcing plate is provided on the L-shaped reinforcing part between the vertical part and the horizontal part; the root of the lower connecting part is connected to the rounded corner of the sill body near the middle position, and the wall thickness near the connection is controlled at 0.8-0.85mm; the upright plate is set between the sill body and the large-span connecting bridge, and is set on the side near the large-span connecting bridge. A gap is reserved between the lower end of the upright plate and the sill body, and the upper end is connected to the upper connecting part, the buckle mounting part, the L-shaped reinforcing part, and the lower connecting part. The position of the upright plate opposite to the rounded corner of the sill body is connected to the rounded corner.

[0008] As a preferred embodiment of this utility model, the plurality of large-span card holders are arranged in two rows. The root of the upper connecting part of the first row of large-span card holders is connected to the first rounded corner near the inner edge of the threshold body, and the root of the lower connecting part is connected to the second rounded corner near the middle position of the threshold body. The root of the upper connecting part of the second row of large-span card holders is connected to the third rounded corner near the outer edge of the threshold body, and the root of the lower connecting part is connected to the rounded corner near the middle position of the threshold body.

[0009] As a preferred embodiment of this utility model, the plurality of large-span card holders and the threshold body are integrally injection molded structures, and the front bracket and the rear bracket are fixed to both ends of the threshold body by ultrasonic welding.

[0010] As a preferred embodiment of this utility model, the front bracket and the rear bracket are provided with locking points for engaging with sheet metal parts.

[0011] As a preferred embodiment of this utility model, the two ends of the threshold body are provided with positioning ribs for installation and positioning with the front bracket and the rear bracket.

[0012] Advantages and beneficial effects of this utility model:

[0013] (1) The car door sill decoration provided by this utility model can meet the requirements of high appearance quality after painting and ensure structural strength. Moreover, the door sill decoration is an integrated single-panel structure with low cost.

[0014] (2) The automotive door sill decoration provided by this utility model has a reasonable structural design and is easy to install. The large-span door sill is equipped with an L-shaped reinforcing part and a vertical plate with a stepped structure. The L-shaped reinforcing part is also equipped with a reinforcing plate, which ensures the structural strength of the large-span door sill. It has advantages such as high structural strength and integral injection molding with the door sill body.

[0015] (3) The car door sill decoration provided by this utility model adjusts the connection position between the base of the card platform and the exterior surface of the door sill body. By designing a large-span card platform, it ensures that the base of the card platform is connected to the rounded corner of the shape. At the same time, it controls the wall thickness of the card platform at the connection with the rounded corner of the door sill body to be 0.8-0.85mm. Under the premise of ensuring the structural strength of the card platform, the appearance after painting is good and there is no shrinkage problem. Attached Figure Description

[0016] Figure 1 A schematic diagram of the overall structure of the car door sill trim provided by this utility model;

[0017] Figure 2 A partial enlargement of the car door sill trim provided by this utility model. Figure 1 ;

[0018] Figure 3 A partial enlargement of the car door sill trim provided by this utility model. Figure 2 ;

[0019] Figure 4 This utility model provides an assembly diagram of the automotive door sill trim and sheet metal parts.

[0020] Reference numerals in the attached drawings: 1. Threshold body; 2. Front support; 3. Rear support; 4. Large span mounting plate; 5. Buckle; 41. Upper connecting part; 42. Buckle mounting part; 43. L-shaped reinforcing part; 44. Lower connecting part; 45. Reinforcing plate; 46. Vertical plate. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0023] like Figures 1 to 4As shown, this embodiment provides a car door sill trim, including a door sill body 1, a front bracket 2 and a rear bracket 3 disposed at both ends of the door sill body, and multiple large-span brackets 4 disposed on the door sill body 1; wherein, the door sill body 1 is a single-panel structure; the large-span brackets 4 include a large-span connecting bridge and a vertical plate 46; wherein, the large-span connecting bridge includes an upper connecting part 41, a snap-fit ​​mounting part 42, an L-shaped reinforcing part 43, and a lower connecting part 44, the root of the upper connecting part 41 is disposed at the rounded corner of the door sill body 1 near the edge, and it connects with the rounded corner of the door sill body 1 and is close to the connecting part 44. The joint (root) is locally weakened and thinned. Tests have shown that if the root wall thickness is less than 0.8mm, the strength of the large-span mounting platform cannot be guaranteed; if the root wall thickness exceeds 0.85mm, shrinkage is likely to occur. Therefore, the root wall thickness needs to be controlled between 0.8-0.85mm to ensure both the strength of the mounting platform and a good appearance. The other end of the upper connecting part 41 is connected to the snap-fit ​​mounting part 12, and the included angle between them is obtuse. The snap-fit ​​mounting part 42 is connected to the vertical part (unmarked) of the L-shaped reinforcing part 43. A snap-fit ​​5 is installed on the snap-fit ​​mounting part 42, and the snap-fit ​​5... Sheet metal parts are snapped together, and the threshold body 1 is connected to the sheet metal part (unmarked) by the buckle 5; the horizontal part (unmarked) of the L-shaped reinforcing part 43 is located below the buckle mounting part 42, that is, the setting position is lower than the buckle mounting part 42. The end of the horizontal part is connected to the lower connecting part 44, and the included angle between them is an obtuse angle. Compared with the straight connection structure, the L-shaped reinforcing part 43 is a stepped structure with higher strength, which plays a crucial role in realizing the large-span platform; a reinforcing plate 45 is provided on the L-shaped reinforcing part 43 between the vertical part and the horizontal part, which can effectively ensure the structural strength of the large-span platform 4; The root of the lower connecting part 44 is connected to the rounded corner of the sill body 1 near the middle position, and the wall thickness near the connection is controlled at 0.8-0.85mm; the upright plate 46 is set between the sill body 1 and the large-span connecting bridge, and is set on the side near the large-span connecting bridge, which can be set on the left or right side. A gap of 1-2mm is reserved between the lower end of the upright plate 46 and the sill body 1, and the upper end is connected to the upper connecting part 41, the buckle mounting part 42, the L-shaped reinforcing part 43, and the lower connecting part 44. The position of the upright plate 46 opposite to the rounded corner of the sill body 1 is connected to the rounded corner.

[0024] like Figure 2As shown, in this embodiment, the wall thickness of the large-span card holder 4 is controlled at around 2mm, and only the connection point (root) with the rounded corner is thinned to 0.8-0.85mm. Multiple large-span card holders 4 are arranged in two rows. In the first row, the root of the upper connecting part 41 of the large-span card holder 4 connects to the first rounded corner a near the inner edge of the threshold body, and the root of the lower connecting part 44 connects to the second rounded corner b near the middle of the threshold body. In the second row, the root of the upper connecting part 41 of the large-span card holder 4 connects to the third rounded corner c near the outer edge of the threshold body, and the root of the lower connecting part 44 connects to the rounded corner b near the middle of the threshold body. The two rows of large-span card holders 4 can be arranged alternately or opposite each other; the specific arrangement is not limited in this application.

[0025] Furthermore, in this embodiment, the multiple large-span card holders 4 and the threshold body 1 are integrally injection molded structures. The front support 2 and the rear support 3 are provided with locking points for locking with sheet metal parts. The front support 2 and the rear support 3 can be designed with reference to existing support structures. This application does not limit their structure in any way. They can be fixed to both ends of the threshold body by ultrasonic welding.

[0026] Furthermore, in this embodiment, the two ends of the threshold body are provided with positioning ribs for installation and positioning with the front bracket and the rear bracket.

[0027] The above describes specific embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. A car door sill trim piece, characterized in that, The device includes a threshold body, front and rear supports at both ends of the threshold body, and multiple large-span brackets mounted on the threshold body. The threshold body is a single-panel structure. Each large-span bracket includes a large-span connecting bridge and a vertical plate. The large-span connecting bridge includes an upper connecting part, a snap-fit ​​mounting part, an L-shaped reinforcing part, and a lower connecting part. The root of the upper connecting part connects to a rounded corner near the edge of the threshold body, and the wall thickness near the connection point is controlled at 0.8-0.85mm. The other end of the upper connecting part connects to the snap-fit ​​mounting part, and the included angle between them is obtuse. The snap-fit ​​mounting part connects to the vertical part of the L-shaped reinforcing part, and a snap-fit ​​is mounted on the snap-fit ​​mounting part. The horizontal part of the L-shaped reinforcing part is located below the buckle mounting part. The horizontal part is connected to the lower connecting part, and the included angle between them is an obtuse angle. A reinforcing plate is provided on the L-shaped reinforcing part between the vertical part and the horizontal part. The root of the lower connecting part is connected to the rounded corner of the sill body near the middle position, and the wall thickness near the connection is controlled at 0.8-0.85mm. The upright plate is set between the sill body and the large-span connecting bridge, and is set on the side near the large-span connecting bridge. A gap is reserved between the lower end of the upright plate and the sill body. The upper end is connected to the upper connecting part, the buckle mounting part, the L-shaped reinforcing part, and the lower connecting part. The position of the upright plate opposite to the rounded corner of the sill body is connected to the rounded corner.

2. The car door sill trim according to claim 1, characterized in that, The aforementioned large-span card holders are arranged in two rows. The root of the upper connecting part of the first row of large-span card holders is connected to the first rounded corner near the inner edge of the threshold body, and the root of the lower connecting part is connected to the second rounded corner near the middle of the threshold body. The root of the upper connecting part of the second row of large-span card holders is connected to the third rounded corner near the outer edge of the threshold body, and the root of the lower connecting part is connected to the rounded corner near the middle of the threshold body.

3. A car door sill trim piece according to claim 1 or 2, characterized in that, The aforementioned large-span card holders and the threshold body are integrally injection molded structures, and the front and rear supports are fixed to both ends of the threshold body by ultrasonic welding.

4. The car door sill trim according to claim 1, characterized in that, The front and rear brackets are equipped with locking points for engaging with sheet metal parts.

5. A car door sill trim piece according to claim 1, characterized in that, The threshold body has positioning ribs at both ends for positioning with the front and rear brackets.

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