Subframe structure
By adopting a subframe designed with profile structure, the problems of many subframe parts, heavy weight and long welds in the prior art are solved, and the vehicle is lightweight, improved range and reduced production costs are achieved.
Patent Information
- Application Number
- CN202421845057.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-07-31
AI Technical Summary
The subframe structure of existing micro electric vehicles has problems such as many parts, heavy mass, and long welds, which leads to limited lightweight and increased range of the vehicle, and at the same time, the design cost is relatively high.
The subframe is designed with profile structure, including front beams, rear beams, longitudinal beams and faucets. The number of parts and weld lengths are reduced through profile welding, direct discharge and mold costs are reduced, and production costs are reduced.
It achieves the effect of reducing subframe parts, light weight and short welds, which helps the vehicle to be lighter, improves the range, and reduces production costs.
Smart Images
Figure CN222973486U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of electric vehicle suspensions, and specifically relates to a subframe structure. Background Art
[0002] Micro electric vehicles with reliable models and low prices are increasingly recognized by the consumer market. The front suspension of this type of vehicle mostly adopts MacPherson independent suspension. Among them, the subframe is a device that connects the wheels, swing arms and the vehicle body, used to transmit the force and torque between the suspension and the vehicle body, control the movement of the wheels, and plays a very important role in the comfort, stability and safety of the vehicle.
[0003] The subframes of existing micro electric vehicles are often developed based on the chassis frames of traditional fuel vehicles. Generally, they adopt a structure formed by multi-layer welding after sheet metal stamping or a structure formed by welding sheet metal and profiles. The front and rear connectors of the subframe connected to the vehicle body are both welded to the cross beam and longitudinal beam after sheet metal stamping, which has the disadvantages of having more parts, heavier mass, and longer weld seams, is not conducive to the lightweight of the whole vehicle, is not conducive to improving the cruising range of the whole vehicle, and also causes waste of design costs. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a subframe structure, which has the advantages of fewer parts, lighter mass, and shorter weld seams, is conducive to the lightweight of the whole vehicle, improves the cruising range, and saves design costs.
[0005] To achieve the above purpose, the subframe structure of the utility model includes a front cross beam, and left through holes and right through holes are symmetrically arranged at both ends of the front cross beam, which are used to insert the left front connector and the right front connector respectively; left and right longitudinal beams are symmetrically connected below the front cross beam. The left longitudinal beam is successively welded with a swing arm left front mounting bracket and a swing arm left rear mounting bracket from top to bottom, and the tail end of the left longitudinal beam is connected to the left rear connector; the right longitudinal beam is successively welded with a swing arm right front mounting bracket and a swing arm right rear mounting bracket from top to bottom, and the tail end of the right longitudinal beam is connected to the right rear connector; a rear cross beam is connected between the left longitudinal beam and the right longitudinal beam, and a steering gear left mounting bracket and a steering gear right mounting bracket are symmetrically welded on the rear cross beam.
[0006] As a further scheme of the utility model: the front cross beam, rear cross beam, left longitudinal beam, right longitudinal beam, left rear connector, and right rear connector all adopt profile structures, and the left front connector and the right front connector are formed by bending profile pipes.
[0007] As a further scheme of the utility model: the connection between the left front connector, the right front connector and the front cross beam adopts a welding connection method; the left front connector and the right front connector are respectively provided with a left front connector mounting shaft and a right front connector mounting shaft at the ends far from the front cross beam.
[0008] As a further solution of the present utility model: the tail end of the left rear faucet is provided with a left rear faucet mounting shaft and a left rear faucet mounting pin, and the tail end of the right rear faucet is also provided with a right rear faucet mounting shaft and a right rear faucet mounting pin.
[0009] As a further solution of the present utility model: the left front mounting bracket of the swing arm, the left rear mounting bracket of the swing arm, the right front mounting bracket of the swing arm, the right rear mounting bracket of the swing arm, the left mounting bracket of the steering gear, and the right mounting bracket of the steering gear are all welded to the subframe after being formed by sheet metal stamping.
[0010] Compared with the prior art, the front crossbeam, rear crossbeam, left longitudinal beam, right longitudinal beam, left rear faucet, and right rear faucet of the present utility model all adopt profile structures, and the left front faucet and right front faucet are formed by bending profile pipes, directly cutting the materials, reducing the number of parts, saving the mold cost, reducing the weight of the subframe, and improving the endurance of the whole vehicle; all adopt profile welding, reducing the weld length, eliminating the connection method with the bottom frame through sheet metal stamping, and reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 is a top view structural schematic diagram of the subframe structure of the present utility model.
[0012] Figure 2 is a structural schematic diagram of the front crossbeam of the present utility model.
[0013] Figure 3 is a cross-sectional view of the connection between the front crossbeam of the present utility model and the left front faucet and the right front faucet.
[0014] Figure 4 is a structural schematic diagram of the left rear faucet of the present utility model.
[0015] In the figure: 1, left front faucet; 2, right front faucet; 3, left front mounting bracket of the swing arm; 4, right front mounting bracket of the swing arm; 5, left rear mounting bracket of the swing arm; 6, right rear mounting bracket of the swing arm; 7, left rear faucet; 8, right rear faucet; 9, left mounting bracket of the steering gear; 10, right mounting bracket of the steering gear; 11, front crossbeam; 12, rear crossbeam; 13, left longitudinal beam; 14, right longitudinal beam; 15, left through hole; 16, right through hole; 17, left front faucet mounting shaft; 18, right front faucet mounting shaft; 19, left rear faucet mounting shaft; 21, left rear faucet mounting pin. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0016] The present utility model will be further described below with reference to the accompanying drawings.
[0017] As shown in Figure 1 Figure 2As shown in the figure, the overall subframe structure is a symmetric structure. The subframe structure includes a front crossbeam 11, and left through-hole 15 and right through-hole 16 are symmetrically arranged at both ends of the front crossbeam 11, which are respectively used for inserting the left front faucet 1 and the right front faucet 2; symmetrically connected below the front crossbeam 11 are a left longitudinal beam 13 and a right longitudinal beam 14. A swing arm left front mounting bracket 3 and a swing arm left rear mounting bracket 5 are successively welded on the left longitudinal beam 13 from top to bottom, and the tail end of the left longitudinal beam 13 is connected to the left rear faucet 7; a swing arm right front mounting bracket 4 and a swing arm right rear mounting bracket 6 are successively welded on the right longitudinal beam 14 from top to bottom, and the tail end of the right longitudinal beam 14 is connected to the right rear faucet 8; the swing arm left front mounting bracket 3, the swing arm left rear mounting bracket 5, the swing arm right front mounting bracket 4, and the swing arm right rear mounting bracket 6 are used to provide swing arm mounting support; a rear crossbeam 12 is connected between the left longitudinal beam 13 and the right longitudinal beam 14, and a steering gear left mounting bracket 9 and a steering gear right mounting bracket 10 are symmetrically welded on the rear crossbeam 12, which are used to provide steering gear mounting support.
[0018] The front crossbeam 11, the rear crossbeam 12, the left longitudinal beam 13, the right longitudinal beam 14, the left rear faucet 7, and the right rear faucet 8 all adopt profile structures, and the left front faucet 1 and the right front faucet 2 are formed by bending profile pipes and directly cut, reducing the number of parts, saving die costs, and reducing the weight of the subframe.
[0019] The swing arm left front mounting bracket 3, the swing arm left rear mounting bracket 5, the swing arm right front mounting bracket 4, the swing arm right rear mounting bracket 6, the steering gear left mounting bracket 9, and the steering gear right mounting bracket 10 are all formed by sheet metal stamping and then welded to the subframe.
[0020] As Figure 3 shown, the connection between the left front faucet 1, the right front faucet 2 and the front crossbeam 11 adopts a welding connection method, which greatly reduces the length of the weld. One end of the left front faucet 1 and the right front faucet 2 far from the front crossbeam 11 are respectively provided with a left front faucet mounting shaft 17 and a right front faucet mounting shaft 18.
[0021] As Figure 1 、 Figure 4 shown, the tail end of the left rear faucet 7 is provided with a left rear faucet mounting shaft 19 and a left rear faucet mounting pin 21, and the tail end of the right rear faucet 8 is also provided with a right rear faucet mounting shaft and a right rear faucet mounting pin. The left rear faucet mounting pin 21 and the right rear faucet mounting pin respectively play the roles of main and auxiliary positioning.
[0022] The subframe structure is connected to the vehicle body through the left front faucet mounting shaft 17, the right front faucet mounting shaft 18, the left rear faucet mounting shaft 19, and the right rear faucet mounting shaft.
[0023] The connection methods of the front and rear faucets of the subframe structure of the present utility model both adopt profile welding, eliminating the connection method with the bottom frame through sheet metal stamping. On the premise of keeping the subframe mode and stress unchanged, the subframe is reduced by 1 kg in weight, the weld seam is shortened by 1 m, the production cost is reduced, and the cruising range of the whole vehicle is improved.
Claims
1. A subframe structure, comprising a front crossbeam (11), characterized in that: The two ends of the front cross beam (11) are symmetrically provided with a left through hole (15) and a right through hole (16), which are used to plug in a left front faucet (1) and a right front faucet (2) respectively; the lower part of the front cross beam (11) is symmetrically connected with a left longitudinal beam (13) and a right longitudinal beam (14); the left longitudinal beam (13) is welded with a left front mounting bracket (3) and a left rear mounting bracket (5) of a swing arm in sequence from top to bottom; the tail end of the left longitudinal beam (13) is connected with a left rear faucet (7); the right longitudinal beam (14) is welded with a right front mounting bracket (4) and a right rear mounting bracket (6) of a swing arm in sequence from top to bottom; the tail end of the right longitudinal beam (14) is connected with a right rear faucet (8); the rear cross beam (12) is connected between the left longitudinal beam (13) and the right longitudinal beam (14); the rear cross beam (12) is symmetrically welded with a left mounting bracket (9) and a right mounting bracket (10) of a steering gear.
2. The subframe structure according to claim 1, characterized in that: The front crossbeam (11), the rear crossbeam (12), the left longitudinal beam (13), the right longitudinal beam (14), the left rear faucet (7) and the right rear faucet (8) all adopt profile structures, and the left front faucet (1) and the right front faucet (2) are formed by bending the profile pipe.
3. The subframe structure according to claim 1 or 2, characterized in that: The intersections of the left front faucet (1), the right front faucet (2) and the front cross beam (11) are connected by welding; the left front faucet (1) and the right front faucet (2) are respectively provided with a left front faucet installation shaft (17) and a right front faucet installation shaft (18) at one end away from the front cross beam (11).
4. The subframe structure according to claim 1, characterized in that: The tail end of the left rear faucet (7) is provided with a left rear faucet mounting shaft (19) and a left rear faucet mounting pin (21), and the tail end of the right rear faucet (8) is also provided with a right rear faucet mounting shaft and a right rear faucet mounting pin.
5. The subframe structure according to claim 1, characterized in that: The swing arm left front mounting bracket (3), the swing arm left rear mounting bracket (5), the swing arm right front mounting bracket (4), the swing arm right rear mounting bracket (6), the steering gear left mounting bracket (9), and the steering gear right mounting bracket (10) are all formed by sheet metal stamping and then welded to the subframe.