Composite front end frame
By using composite materials and embedded metal inserts in the front end frame of pure electric vehicles, the problem of insufficient stiffness of the front end frame in the prior art is solved, higher strength and more stable torque are achieved, and the safety and durability of the vehicle are improved.
Patent Information
- Application Number
- CN202421962783.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-14
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-08-14
AI Technical Summary
When the existing pure electric vehicle front-end frame meets the stiffness requirements, it is difficult to meet the performance requirements of the hair cover lock, and the torque is easily attenuated, resulting in weak overall stiffness.
The composite front-end frame is adopted, and the metal insert is embedded into the front-end frame body and bracket through injection molding, which enhances the strength of the key connection parts and improves torque stability through nut connections.
It improves the overall stiffness of the front-end frame, enhances the connection strength of the hair cover lock, bumper bracket, cooling module and headlights, effectively prevents safety hazards when driving at high speed, and absorbs impact energy during collisions to protect the cooling module.
Smart Images
Figure CN222832915U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of front end frame manufacturing, in particular to a composite material front end frame. Background Art
[0002] At present, due to the changes in battery structure, the lower mounting points of cooling modules of pure electric vehicles are all installed on the energy absorption box or subframe. The front-end frame of existing pure electric vehicles needs to adopt a semi-frame structure. On the one hand, it is used as a load-bearing structure to install cabin beautification panels, cooling modules, bumper brackets, hoods, anti-collision beams, body longitudinal beams and headlights. On the other hand, the front-end frame also contributes to the overall torsional performance of the body, and it has very high requirements for torsional stiffness and strength durability. The strength of the all-plastic semi-frame structure is difficult for some models to meet the performance requirements of the hood lock of customers. At the same time, the torque at the hood lock is prone to decay over a long period of time, and the overall stiffness of the product is weak. Utility Model Content
[0003] In view of this, the utility model aims to create a composite material front end frame, metal inserts and nuts to improve the rigidity of the sign frame.
[0004] In order to achieve the above-mentioned purpose, the technical solution created by the utility model is implemented as follows:
[0005] A composite material front end frame comprises a front end frame body, a first bracket and a second bracket formed by injection molding, a first metal insert is arranged on the front end frame body, and a second metal insert and a third metal insert are arranged on the first bracket and the second bracket respectively; the first metal insert, the second metal insert and the third metal insert are integrally embedded into the corresponding front end frame body, the first bracket and the second bracket during injection molding; the first bracket and the second bracket are symmetrically arranged at positions close to the two ends of the front end frame body and are perpendicular to the front end frame body; four connecting blocks are arranged on the front end frame body for connecting with the cabin beautification plate; a first connecting portion and a second connecting portion are arranged on the first metal insert, which are respectively used to connect with the vehicle body and the hood lock; a third connecting portion and a fourth connecting portion are arranged on the front end frame body, which are respectively used to connect with the bumper bracket and the cooling module; a fifth connecting portion for connecting with the headlight is arranged on the first bracket and the second bracket respectively; a sixth connecting portion for connecting with the vehicle body longitudinal beam and the anti-collision beam is arranged on the second metal insert and the third metal insert respectively; and the front end frame body is also provided with a connecting seat for connecting with a sensor fixing point.
[0006] Furthermore, the first bracket and the second bracket are symmetrical parts; the second metal insert and the third metal insert are symmetrical parts.
[0007] Furthermore, the materials of the first metal insert, the second metal insert and the third metal insert are all cold-rolled steel plates, the thickness of the steel plate of the first metal insert is 0.8 mm, and the thickness of the steel plates of the second metal insert and the third metal insert is 1 mm.
[0008] Furthermore, the first metal insert, the second metal insert and the third metal insert are all formed by stamping.
[0009] Furthermore, the front end frame body includes a first surface, a second surface and a third surface; wherein the third surface is arranged opposite to the first surface, the second surface is located between the first surface and the third surface, and the first surface, the second surface and the third surface form a groove structure; and a plurality of reinforcing ribs are also arranged along the front end frame body in the groove of the groove structure.
[0010] Furthermore, the first metal insert includes a first metal surface, a second metal surface and a third metal surface; wherein the third metal surface is arranged opposite to the first metal surface, the second metal surface is located between the first metal surface and the third metal surface, and the first metal surface, the second metal surface and the third metal surface form a groove structure; when the first metal insert is embedded in the front end frame body, the first metal surface corresponds to the first surface, the second metal surface corresponds to the second surface, and the third metal surface corresponds to the third surface.
[0011] Furthermore, four connecting blocks are arranged at intervals on the first surface; the first connecting part includes four first connecting holes, which are grouped in pairs and are respectively located at both ends of the first metal surface; the second connecting part includes two welding nuts, which are arranged at intervals on the second metal surface and are located on both sides of the axis of the first metal insert; the third connecting part includes six first nuts, two of which are arranged on the first surface, and the remaining four first nuts are arranged on the second surface; the fourth connecting part includes four second nuts, which are grouped in pairs and are arranged on the second surface; the fifth connecting part includes two third nuts, each of which is respectively located at the first bracket and the second bracket near the connection with the front end frame body; the sixth connecting part includes four third connecting holes, which are grouped in pairs and are respectively arranged on the second metal insert and the third metal insert, and are close to the free ends of the first bracket and the second bracket; the connecting seat is arranged on the third surface, and a connecting nut is provided on the connecting seat for connecting to the sensor fixing point.
[0012] Compared with the prior art, the invention can achieve the following beneficial effects:
[0013] 1) When the front end frame body, the first bracket and the second bracket are integrally injection molded, the first metal insert, the second metal insert and the third metal insert are embedded into the corresponding front end frame body, the first bracket and the second bracket, so that the front end frame can meet the rigidity requirements and realize the integration of the cabin beautification panel, the cooling module, the bumper bracket, the lock cover, the anti-collision beam, the body longitudinal beam and the headlight.
[0014] 2) In order to enhance the connection strength at the hood lock, bumper bracket, cooling module and headlight, nuts are used at these key locations to ensure that the torque attenuation is small, thereby effectively preventing the occurrence of safety hazards such as the hood lifting under extreme conditions such as high-speed driving. When the vehicle collides, it can absorb the impact energy, thereby effectively reducing the impact of the collision force on the cooling module, protecting the cooling module from damage and reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The drawings constituting part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:
[0016] Figure 1 It is a structural schematic diagram of a composite material front end frame provided according to an embodiment of the utility model;
[0017] Figure 2 It is a structural schematic diagram of a connection side of a front frame body, a first bracket and a second bracket provided according to an embodiment of the utility model;
[0018] Figure 3 It is a structural schematic diagram of one side of the front frame body, the first bracket and the second bracket provided with reinforcing ribs according to an embodiment of the utility model;
[0019] Figure 4 It is a structural schematic diagram of the connection of the first metal insert, the second metal insert and the third metal insert provided according to an embodiment of the utility model.
[0020] The figure marks include: 1. front end frame body; 11. connecting block; 12. first connecting part; 13. second connecting part; 14. third connecting part; 15. fourth connecting part; 16. fifth connecting part; 17. sixth connecting part; 18. first surface; 19. second surface; 110. connecting seat; 111. connecting nut; 112. reinforcing rib; 113. rectangular hole; 2. first bracket; 3. second bracket; 4. first metal insert; 5. second metal insert; 51. first bending part; 52. first groove-shaped part; 6. third metal insert; 61. second bending part; 62. second groove-shaped part. DETAILED DESCRIPTION
[0021] In order to make the purpose, technical solution and advantages of the utility model creation more clear, the utility model creation is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model creation and do not constitute a limitation of the utility model creation.
[0022] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0023] In the description of the invention of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the invention of the utility model and simplifying the description, rather than indicating or implying 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 invention of the utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the invention of the present utility model, unless otherwise specified, "multiple" means two or more.
[0024] In the description of the invention of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the invention of the utility model can be understood according to specific circumstances.
[0025] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.
[0026] like Figure 1 As shown, a composite material front end frame provided by an embodiment of the utility model comprises a front end frame body 1, a first bracket 2 and a second bracket 3 which are integrally formed by injection molding, a first metal insert 4 is arranged on the front end frame body 1, and a second metal insert 5 and a third metal insert 6 are respectively arranged on the first bracket 2 and the second bracket 3; the first metal insert 4, the second metal insert 5 and the third metal insert 6 are integrally embedded into the corresponding front end frame body 1, the first bracket 2 and the second bracket 3 during injection molding; the first bracket 2 and the second bracket 3 are symmetrically arranged at positions close to both ends of the front end frame body 1, and are perpendicular to the front end frame body 1.
[0027] The width of the connecting end where the first bracket 2 and the second bracket 3 are connected to the front end frame body 1 is smaller than the width of the free end. The connecting end and the two sides of the free end are connected by a curved surface, and reinforcing ribs are provided in the space formed by the two curved surfaces and the connecting end and the free end.
[0028] Furthermore, the first bracket 2 and the second bracket 3 are symmetrical parts;
[0029] like Figure 2 , Figure 3 As shown, the front frame body 1 includes three surfaces, namely, the first surface 18, the second surface 19 and the third surface, the third surface is arranged opposite to the first surface 18, the second surface 19 is located between the first surface 18 and the third surface and is perpendicular to the first surface 18 and the third surface, the first surface 18, the second surface 19 and the third surface form a groove structure, and a plurality of reinforcing ribs 112 are arranged in the groove of the groove structure along the length direction of the front frame body 1. The reinforcing ribs play a reinforcing role, and the specific arrangement of the reinforcing ribs is not described in detail herein, and the position of the reinforcing ribs is arranged according to the actual usage.
[0030] The front frame body 1, the first bracket 2 and the second bracket 3 use a composite material of PP+LGF30. PP+LGF30 is mainly composed of a mixture of polypropylene (PP) and 30% long glass fiber (LGF) reinforcement, and has excellent mechanical properties, heat resistance, cold resistance, chemical stability and electrical properties.
[0031] like Figure 4 As shown, the first metal insert 4, the second metal insert 5 and the third metal insert 6 are made of cold-rolled steel plate DC01, and are all stamped. The steel plate thickness of the first metal insert 4 is 0.8mm, and the steel plate thickness of the second metal insert 5 and the third metal insert 6 is 1mm. The structure of the first metal insert 1 is a groove structure, including a first metal surface, a second metal surface and a third metal surface. The first metal surface is arranged opposite to the third metal surface, and the second metal surface is located between the first metal surface and the third metal surface and is perpendicular to the first metal surface and the second metal surface, forming a groove structure. When the first metal insert 1 is embedded in the front end frame body 1, the first metal surface corresponds to the first surface, the second metal surface corresponds to the second surface, and the third metal surface corresponds to the third surface.
[0032] The second metal insert 5 and the third metal insert 6 are symmetrical parts. The second metal insert 5 includes a first bending portion 51 and a first groove portion 52, and the third metal insert 6 includes a second bending portion 61 and a second groove portion 62. One end of the first bending portion 51 and the second bending portion 61 overlaps the first metal surface of the first metal insert 1, and the other end of the first bending portion 51 is connected to the first groove portion 52, and the other end of the second bending portion 61 is connected to the second groove portion 62. The outer contours of the first groove portion 52 and the second groove portion 62 are similar to the outer contours of the free ends of the first bracket 2 and the second bracket 3.
[0033] Four connection blocks 11 for connecting the cabin beautification panels are provided on the first surface 18 of the front end frame body 1 , and the four connection blocks 11 are arranged at intervals.
[0034] A first connection portion 12 for connecting to the vehicle body is provided on the first metal surface of the first metal insert 4. The first connection portion 12 includes four first connection holes, which are grouped in pairs and are located at both ends of the first metal surface. Rectangular holes 113 for accommodating two first connections are provided at positions corresponding to the first connection portion 12 at both ends of the front frame body 1.
[0035] A second connection portion 13 for connecting with the hair cover lock is provided on the second metal surface, and the second connection portion 13 includes two welding nuts, which are arranged at intervals and located on both sides of the axis of the first metal insert 4. After the two welding nuts are welded to the second metal surface, they are embedded in the front frame body 1 together with the first metal insert.
[0036] A third connection portion 14 for connecting to the bumper bracket and a fourth connection portion 15 for connecting to the cooling module are provided on the front frame body 1. The third connection portion 14 includes six first nuts, two of which are arranged on the first surface 18 of the front frame body 1, and the remaining four first nuts are arranged on the second surface 19 of the front frame body 1; the fourth connection portion 15 includes four second nuts, two of which form a group and are arranged on the second surface 19 of the front frame body 1.
[0037] A fifth connection part 16 for connecting with the headlight is provided on the first bracket 2 and the second bracket 3. The fifth connection part 16 includes two third nuts. Each third nut is located at a position of the first bracket 2 and the second bracket 3 close to the connection with the front frame body 1. A sixth connection part 17 for connecting with the vehicle body longitudinal beam and the anti-collision beam is provided on the second metal insert 5 and the third metal insert 6. The sixth connection part 17 includes four third connection holes. The third connection holes are grouped in pairs and are respectively provided on the second metal insert 5 and the third metal insert 6, and close to the free ends of the first bracket 2 and the second bracket 3.
[0038] A connecting seat 110 is also provided on the third surface, and a connecting nut 111 is provided on the connecting seat 110 for connecting with a fixing point of the sensor.
[0039] In this embodiment, the first nut, the second nut, the third nut and the connecting nut are all riveted nuts, and the riveted nuts are assembled after the front end frame is injection molded.
[0040] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.
[0041] The above specific implementations do not constitute a limitation on the protection scope of the present utility model. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.
Claims
1. A composite front end frame, characterized in that: The invention comprises a front end frame body, a first bracket and a second bracket which are integrally formed by injection molding, wherein the front end frame body is provided with a first metal insert, and the first bracket and the second bracket are respectively provided with a second metal insert and a third metal insert; the first metal insert, the second metal insert and the third metal insert are integrally embedded into the corresponding front end frame body, the first bracket and the second bracket during injection molding; the first bracket and the second bracket are symmetrically arranged at positions close to two ends of the front end frame body and are perpendicular to the front end frame body; Four connecting blocks are provided on the front end frame body for connecting to the cabin beautification panel; a first connecting portion and a second connecting portion are provided on the first metal insert, which are respectively used to connect to the vehicle body and the hood lock; a third connecting portion and a fourth connecting portion are provided on the front end frame body, which are respectively used to connect to the bumper bracket and the cooling module; a fifth connecting portion for connecting to the headlight is provided on the first bracket and the second bracket respectively; a sixth connecting portion for connecting to the vehicle body longitudinal beam and the anti-collision beam is provided on the second metal insert and the third metal insert respectively; the front end frame body is also provided with a connecting seat for connecting to the sensor fixing point.
2. The composite front end frame according to claim 1, characterized in that: The first bracket and the second bracket are symmetrical parts; the second metal insert and the third metal insert are symmetrical parts.
3. The composite front end frame according to claim 1, characterized in that: The materials of the first metal insert, the second metal insert and the third metal insert are all cold-rolled steel plates. The thickness of the steel plate of the first metal insert is 0.8 mm, and the thickness of the steel plate of the second metal insert and the third metal insert is 1 mm.
4. The composite front end frame according to claim 3, characterized in that: The first metal insert, the second metal insert and the third metal insert are all formed by stamping.
5. The composite front end frame according to claim 1, characterized in that: The front end frame body includes a first surface, a second surface and a third surface; wherein the third surface is arranged opposite to the first surface, the second surface is located between the first surface and the third surface, and the first surface, the second surface and the third surface form a groove structure; a plurality of reinforcing ribs are also arranged in the groove of the groove structure along the front end frame body.
6. The composite front end frame according to claim 5, characterized in that: The first metal insert includes a first metal surface, a second metal surface and a third metal surface; wherein the third metal surface is arranged opposite to the first metal surface, the second metal surface is located between the first metal surface and the third metal surface, and the first metal surface, the second metal surface and the third metal surface form a groove structure; when the first metal insert is embedded in the front end frame body, the first metal surface corresponds to the first surface, the second metal surface corresponds to the second surface, and the third metal surface corresponds to the third surface.
7. The composite front end frame according to claim 6, characterized in that: The four connection blocks are arranged at intervals on the first surface; The first connection portion includes four first connection holes, which are grouped in pairs and are respectively located at two ends of the first metal surface; the second connection portion includes two welding nuts, which are arranged on the second metal surface at intervals and are located on both sides of the axis of the first metal insert; The third connection portion includes six first nuts, two of which are arranged on the first surface, and the remaining four of which are arranged on the second surface; the fourth connection portion includes four second nuts, two of which form a group and are arranged on the second surface; The fifth connection portion includes two third nuts, each of which is located at a position of the first bracket and the second bracket close to the connection with the front frame body; The sixth connecting portion includes four third connecting holes, which are grouped in pairs and are respectively arranged on the second metal insert and the third metal insert and close to the free ends of the first bracket and the second bracket; The connecting seat is arranged on the third surface, and a connecting nut is provided on the connecting seat for connecting with a fixing point of the sensor.