Automobile threshold reinforcing structure
By incorporating a reinforced structure with nylon and fiberglass layers within the car door sill, the problems of poor flexibility and cracking in existing car door sill structures are solved, achieving both increased strength and lightweighting.
Patent Information
- Application Number
- CN202422554029.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-22
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2034-10-22
AI Technical Summary
The existing automotive door sill structure, after adding extruded aluminum alloy reinforcement, suffers from poor structural flexibility, heavy weight, and susceptibility to cracking, and existing solutions cannot effectively solve these problems.
The reinforced structure body, composed of nylon and fiberglass layers, is manufactured by injection molding. The nylon layer has filling grooves, the fiberglass layer is placed in the grooves, and it is bonded to the car door sill with an adhesive layer, avoiding the need for bolts and brackets.
It enhances the strength of car door sills, is easy to install without requiring additional design, avoids cracking of door sill sheet metal parts, and has good energy absorption effect and lightweight characteristics.
Smart Images
Figure CN223778431U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of automobile body, specifically, the utility model relates to an automobile door sill reinforcing structure. BACKGROUND
[0002] The passive safety of the automobile is the basic attribute of the automobile, and is closely related to the life safety of the passenger after the accident, and the domestic automobile safety evaluation regulation also proposes higher requirements, the automobile body is the most main bearing structure, plays the role of energy absorption and deformation resistance in the process of collision, ensures the integrity and stability of the passenger survival space, and the door sill structure of the automobile body is the important structure in the collision, plays the role of axial deformation resistance in the small offset collision, and plays the role of lateral energy absorption in the side column collision. The main reinforcing scheme of the automobile door sill in the prior art is to increase the extruded aluminum alloy reinforcing structure in the door sill, which is connected with the door sill sheet metal through bolts and connecting brackets. The bolt is connected with the inner side of the door sill, and the bracket is connected with the welding edge through the welding point. The structure flexibility design is crossed, the weight is relatively heavy, the local structure stress concentration of the door sill is prone to occur, and the cracking risk is increased.
[0003] To solve the above problems, the patent document 118651315A discloses an automobile door sill beam reinforcing structure and an automobile door sill beam structure, the automobile door sill beam reinforcing structure is used for being installed in the cavity of the door sill beam outer plate, which is prepared from a fiber reinforced composite material, the automobile door sill beam reinforcing structure comprises: a reinforcing main body, which is cross-sectioned along a direction intersecting the axial direction of the reinforcing main body, the cross-section of the reinforcing main body is in a C-shaped form, and a first reinforcing spoke extends out from the inner side of the reinforcing main body to the opening direction of the reinforcing main body, but the above problems cannot be solved. UTILITY MODEL CONTENTS
[0004] The utility model is carried out in order to solve the above problems, the purpose lies in providing a kind of automobile door sill reinforcing structure that is convenient to install, can improve the strength of automobile door sill, and does not need to be additionally designed on automobile door sill, avoid the cracking problem of automobile door sill sheet metal part, to achieve the above purpose, the technical scheme that the utility model adopts is as follows:
[0005] The utility model provides a kind of automobile door sill reinforcing structure, with such characteristics, including the reinforcing structure body being arranged in the automobile door sill.
[0006] In the automobile door sill reinforcing structure provided by the utility model, the reinforcing structure body can also have the following characteristics: the reinforcing structure body includes a nylon layer, and the nylon layer is arranged in the automobile door sill.
[0007] In the automobile door sill reinforcing structure provided by the utility model, the reinforcing structure body can also have the following characteristics: the reinforcing structure body further includes a glass fiber layer, the nylon layer is provided with a filling groove, and the glass fiber layer is arranged in the filling groove.
[0008] The car door sill reinforcement structure provided by this utility model may also have the feature that the filling groove is located on the side of the nylon layer away from the car door sill.
[0009] The car door sill reinforcement structure provided by this utility model may also have the following features: the reinforcement structure body further includes an adhesive layer, which is disposed on the side of the nylon layer close to the car door sill and on the side of the glass fiber layer away from the nylon layer.
[0010] The car door sill reinforcement structure provided by this utility model may also have the following features: the nylon layer is made by injection molding, and the nylon layer has a hexagonal honeycomb structure with a side length of 20mm to 30mm and a thickness of 1.5mm to 2.5mm.
[0011] The automotive door sill reinforcement structure provided by this utility model may also have the following feature: the fiberglass layer is a straight tubular layer structure with a thickness of 1.5mm to 2.5mm.
[0012] The car door sill reinforcement structure provided by this utility model may also have the following feature: the thickness of the adhesive layer is 2mm-4mm.
[0013] The technical advantages of this utility model are as follows: The car door sill reinforcement structure provided by this utility model includes a reinforcement structure body set inside the car door sill. The reinforcement structure body is filled and bonded inside the car door sill, without the need for bolts and brackets. The installation process is simple and no additional design is required on the car door sill, thus avoiding the problem of cracking of the car door sill sheet metal parts.
[0014] Therefore, the car door sill reinforcement structure provided by this utility model is easy to install, can improve the strength of the car door sill, and does not require additional design on the car door sill, thus avoiding the problem of cracking of the car door sill sheet metal parts. Attached Figure Description
[0015] This manual includes the following figures, which illustrate the following:
[0016] Figure 1 This is a schematic diagram of the car door sill reinforcement structure in an embodiment of this utility model;
[0017] Figure 2 This is a schematic diagram of the car door sill reinforcement structure installed inside the car door sill in an embodiment of this utility model;
[0018] Figure 3 This is a cross-sectional view of the car door sill reinforcement structure in an embodiment of this utility model.
[0019] The diagram is labeled as follows: 1-Car door sill, 10-Reinforcing structure body, 11-Nylon layer, 111-Filling groove, 12-Fiberglass layer, 13-Adhesive layer. Detailed Implementation
[0020] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention, and to facilitate its implementation.
[0021] Figure 1 This is a schematic diagram of the car door sill reinforcement structure in an embodiment of this utility model; Figure 2 This is a schematic diagram of the car door sill reinforcement structure installed inside the car door sill in an embodiment of this utility model; Figure 3 This is a cross-sectional view of the car door sill reinforcement structure in an embodiment of this utility model.
[0022] like Figure 1 , Figure 2 as well as Figure 3 As shown, the car door sill reinforcement structure provided by this utility model includes a reinforcement structure body 10 disposed in the car door sill 1. The reinforcement structure body 10 is filled and bonded to the car door sill 1 without the need for bolts and brackets. The installation process is simple and does not require additional design on the car door sill, thus avoiding the problem of cracking of the car door sill sheet metal parts.
[0023] like Figure 1 and Figure 2 As shown, the reinforcing structure body 10 includes a nylon layer 11 and a fiberglass layer 12. The nylon layer 11 is disposed within the car sill 1, and a filling groove 111 is provided on the nylon layer 11, located on the side of the nylon layer 11 away from the car sill 1. The fiberglass layer 12 is disposed within the filling groove 111. The nylon layer 11 is manufactured using a nylon material injection molding process, which improves its toughness. It allows for different structural forms and thicknesses to be adopted according to different forms of the car sill 1, offering high flexibility. The nylon layer 11 has a hexagonal honeycomb layer structure, with a side length of 20mm to 30mm and a thickness of 1.5mm to 2.5mm. In practical applications, different hexagonal sizes and thicknesses can be designed along the entire length direction based on collision performance. The fiberglass layer 12 is a straight tubular layer structure with a thickness of 1.5mm to 2.5mm. The cross-sectional shape can be designed as a rectangular single cavity, multi cavity, or other shapes. During the injection molding process of the nylon layer 11, the fiberglass layer 12 is embedded in the nylon layer 11, which makes the reinforced structure body 10 have the characteristics of good energy absorption and high longitudinal compressive strength, and the density is lower than that of aluminum alloy, achieving further weight reduction under the premise of the same performance.
[0024] The reinforcing structure body 10 also includes an adhesive layer 13. The adhesive layer 13 is disposed on the side of the nylon layer 11 near the car door sill 1, and on the side of the fiberglass layer 12 away from the nylon layer 11, thereby bonding the reinforcing structure body 10 to the car door sill. The initial thickness of the adhesive layer 13 is 2mm-4mm. The adhesive layer 13 uses epoxy resin adhesive. The epoxy resin adhesive will expand and bond with the sheet metal of the car door sill 1 after baking, and has high bonding strength.
[0025] The role and effect of the embodiments
[0026] The car door sill reinforcement structure provided by this utility model includes a reinforcement structure body 10 disposed inside the car door sill 1. The reinforcement structure body 10 is filled and bonded inside the car door sill 1 without the need for bolts and brackets. The installation process is simple and does not require additional design on the car door sill, thus avoiding the problem of cracking of the car door sill sheet metal parts. The car door sill reinforcement structure provided by this utility model is easy to install, can improve the strength of the car door sill, and does not require additional design on the car door sill, thus avoiding the problem of cracking of the car door sill sheet metal parts.
[0027] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.
Claims
1. A car door sill reinforcement structure, characterized in that, The device includes a reinforcing structure body (10) disposed within a car door sill (1). The reinforcing structure body (10) includes a nylon layer (11) disposed within the car door sill (1). The reinforcing structure body (10) also includes a glass fiber layer (12). A filling groove (111) is provided on the nylon layer (11). The glass fiber layer (12) is disposed within the filling groove (111). The filling groove (111) is located on the side of the nylon layer (11) away from the car door sill (1). The reinforcing structure body (10) also includes an adhesive layer (13). The adhesive layer (13) is disposed on the side of the nylon layer (11) close to the car door sill (1). The adhesive layer (13) is disposed on the side of the glass fiber layer (12) away from the nylon layer (11).
2. The automotive door sill reinforcement structure according to claim 1, characterized in that, The nylon layer (11) is made by injection molding. The nylon layer (11) is a hexagonal honeycomb layer structure with a side length of 20mm~30mm and a thickness of 1.5mm~2.5mm.
3. The automotive door sill reinforcement structure according to claim 2, characterized in that, The fiberglass layer (12) has a straight tubular layer structure with a thickness of 1.5mm to 2.5mm.
4. The automotive door sill reinforcement structure according to claim 3, characterized in that, The thickness of the adhesive layer (13) is 2mm to 4mm.