Lightweight electric vehicle frame

Abstract

The utility model relates to a kind of lightweight electric vehicle frame, including single-layer structure's vehicle underframe, detachably connected on the vehicle underframe multiple-specification integrated rear edge pipe.Vehicle underframe is divided to set, including: first functional area, contains head pipe, front vertical pipe, second functional area, is the area where pedal is located, contains the left and right side edge pipe of both sides, third functional area, is the area where seat bucket is located, contains tail side edge pipe.The utility model structure is simple, and frame left and right edge pipe and rear edge pipe are integrally bent into shape, while meeting the basic strength and torsional properties of frame, modeling is smooth, appearance is simple, and product commodity is improved.

Description

Technical Field

[0001] This utility model relates to the field of two-wheeled vehicle frame technology, and in particular to a lightweight electric vehicle frame. Background Technology

[0002] The frame of an electric vehicle is an important component of the overall weight of the vehicle. Currently, most electric vehicle frames on the market are made of metal tubing, resulting in a relatively large frame weight.

[0003] The new national standard requires the vehicle weight to be ≤55kg and the plastic parts weight to be ≤3kg. Traditional carbon steel plates and steel pipes are all welded as a whole, making it difficult to meet the new national standard's requirement for a reduction in vehicle weight. Utility Model Content

[0004] In response to the shortcomings of the existing production technology, the applicant provides a lightweight electric vehicle frame with a reasonable structure, which can effectively reduce the frame's weight and is suitable for single-person or two-person riding modes.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A lightweight electric vehicle frame includes a single-layer chassis and a multi-specification integrated rear side tube that can be detachably connected to the chassis.

[0007] As a further improvement to the above technical solution:

[0008] The chassis is divided into sections, including:

[0009] The first functional area includes the head tube and the front riser.

[0010] The second functional area is where the pedals are located, including the left and right side tubes on both sides.

[0011] The third functional area is where the seat bucket is located, including the rear side tubes.

[0012] The chassis is an integral welded structure, and the chassis is securely connected to the rear side tube.

[0013] The rear side tube is equipped with a connecting bracket and a bucket mounting bracket, and at least one set of connecting brackets is positioned close to one set of bucket mounting brackets.

[0014] The center of gravity of the vehicle's seat bucket installation coincides with the center of gravity of the rear side tube installation.

[0015] The side tube at the rear of the vehicle is equipped with a mounting base.

[0016] The rear side tubes are equipped with lifting lugs on the side facing the ground, and one set of side tube mounting bases is close to the lifting lugs.

[0017] The second functional area is a single-tube frame structure, and the area enclosed by the frame is the battery modification area.

[0018] The rear side tube is a single-tube bent component.

[0019] The beneficial effects of this utility model are as follows:

[0020] This utility model has a simple structure and is the first to integrate the frame into the overall design. The left and right side tubes and the rear side tube of the frame are formed by integral bending. While meeting the basic strength and torsional performance of the frame, the shape is smooth and the appearance is simple, which improves the product's marketability.

[0021] The frame handles some of the exterior functions, reducing the use of plastic parts, minimizing mold costs and time, and shortening project cycles, while also complying with new national regulations. Single-person and passenger-carrying scenarios can be achieved through integration with a single rear side tube. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall frame structure of the vehicle in this application.

[0023] Figure 2 This is a side view of the overall frame structure of the vehicle in this application.

[0024] Figure 3 This is a side view of the rear side tube of this application.

[0025] The components include: 1. chassis frame; 2. rear side tubes;

[0026] 101. First functional area; 102. Head tube; 103. Front upright tube; 104. Second functional area; 105. Left and right side tubes; 106. Third functional area; 107. Rear side tube; 108. Side tube mounting base; 109. Lifting lug;

[0027] 201. Connecting bracket; 202. Bucket mounting bracket. Detailed Implementation

[0028] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0029] like Figures 1-3 As shown, the lightweight electric vehicle frame of this embodiment includes a single-layer chassis 1 and a multi-specification integrated rear side tube 2 that can be detachably connected to the chassis 1.

[0030] The chassis is divided into 1 sections, including:

[0031] The first functional area 101 includes the head tube 102 and the front riser tube 103.

[0032] The second functional area 104 is the area where the pedals are located, including the left and right side tubes 105 on both sides.

[0033] The third functional area 106 is the area where the seat bucket is located, including the rear side tube 107.

[0034] The chassis 1 is an integral welded structure, and the chassis 1 is fastened to the rear side tube 2.

[0035] The rear side tube 2 is provided with a connecting bracket 201 and a seat bucket mounting bracket 202, and at least one set of connecting brackets 201 is positioned close to one set of seat bucket mounting brackets 202.

[0036] The center of gravity of the vehicle's seat bucket installation coincides with the center of gravity of the rear side tube 2 installation.

[0037] A side tube mounting base 108 is provided on the rear side tube 107.

[0038] The rear side tube 107 is provided with a lifting lug 109 on the side facing the ground, and one set of side tube mounting bases 108 is close to the lifting lug 109.

[0039] The second functional area 104 is a single-tube frame structure, and the area enclosed by the frame is the battery modification area.

[0040] The rear side tube 2 is a single-tube bent component. The specific structure of this utility model is as follows:

[0041] like Figure 2 As shown, the frame is divided into a first functional area 101, a second functional area 104, and a third functional area 106. The division is based on the design complexity and the function of the frame.

[0042] Reference Figure 1 The first functional area 101 includes the head tube 102, the front seat tube 103, and the reinforcing plate. The first functional area 101 is made of 20# steel and SPCC, and is connected into components using conventional MIG welding. The head tube 102 mainly mounts the horn, coat hook, and front fork assembly, with the front fork mounting position located at the lower part of the head tube 102.

[0043] The second functional area 104 includes integrated left and right side tubes 105 and a front support tube for the side tubes. The second functional area 104 is made of Q235B and SPCC materials, connected using traditional MIG / MAG welding. The support tube is an arc-shaped section that connects both the side tubes and the front upright tube 103. The main function of the second functional area 104 is to install foot pedals and single supports, such as... Figure 1 As shown, the second functional area 104 of the frame is a frame formed by a single tube. This design, which leaves as much blank space as possible, allows the second functional area 104 to retain a certain amount of space, which can meet the user's lead-acid modification needs.

[0044] The third functional area 106 includes a horizontal fork mounting plate, a rear shock absorber lug 109, a rear side tube 2, a bottom bracket, and other structures. Since the main technical point in this application is the single-tube frame, other components are not modified or are modified only slightly. In this embodiment, only the single-tube chassis 1 part of the third functional area 106 and the rear side tube 2 which is fastened to the single-tube chassis 1 are described.

[0045] The materials for the third functional area 106 are Q235B and SPCC. Except for the fastening connection of the rear side tube 2, all other connection positions use traditional MIG welding, that is, only the connection between the rear side tube 2 and the lower side tube is bolted. The main installation components of the third functional area 106 include the rear swingarm, rear shock absorber, mid-crank chain system, controller, seat cushion and seat bucket, etc.

[0046] The single-tube frame structure provided in this application is simple in overall design. The rear side tube 2 is adjustable, and different specifications of the rear side tube 2 can be replaced by detachable fasteners to meet different styling requirements.

[0047] like Figure 3 As shown, the rear side tube 2 in this embodiment also adopts a single tube bending structure, which can also achieve the purpose of lightweighting and reducing the use of connecting parts.

[0048] As an alternative implementation, the frame provided in this application can be replaced with other lightweight alloys, such as magnesium alloys, aluminum-magnesium alloys, etc.

[0049] The advantages of this application lie in reducing production costs and frame weight while maintaining a simple and aesthetically pleasing frame, significantly enhancing its product appeal. Functional areas are primarily connected by welding, ensuring the overall strength and rigidity of the frame, a substantial improvement over traditional steel frames. It also offers lightweight advantages and significantly reduces the use of traditional plastic parts, or eliminates them altogether, replacing them with lightweight alloy materials for the outer coverings, thus meeting the weight and plastic restriction requirements of the new national standards.

[0050] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.

Claims

1. A lightweight electric vehicle frame, characterized in that: It includes a single-layer chassis (1) and a multi-specification integrated rear side tube (2) that can be detachably connected to the chassis (1).

2. The lightweight electric vehicle frame as described in claim 1, characterized in that: The chassis (1) is divided into sections, including: The first functional area (101) includes the head tube (102) and the front riser (103). The second functional area (104) is the area where the pedals are located, including the left and right side tubes (105) on both sides. The third functional area (106) is the area where the seat bucket is located, including the rear side tube (107).

3. The lightweight electric vehicle frame as described in claim 1, characterized in that: The chassis (1) is an integral welded structure, and the chassis (1) is fastened to the rear side tube (2).

4. The lightweight electric vehicle frame as described in claim 3, characterized in that: The rear side tube (2) is provided with a connecting bracket (201) and a bucket mounting bracket (202), and at least one set of connecting brackets (201) is located close to one set of bucket mounting brackets (202).

5. The lightweight electric vehicle frame as described in claim 4, characterized in that: The center of gravity of the vehicle's seat bucket installation coincides with the center of gravity of the rear side tube (2).

6. The lightweight electric vehicle frame as described in claim 1, characterized in that: A side tube mounting base (108) is provided on the rear side tube (107).

7. The lightweight electric vehicle frame as described in claim 6, characterized in that: The rear side tube (107) is provided with a lifting lug (109) on the side facing the ground, and one set of side tube mounting bases (108) is close to the lifting lug (109).

8. The lightweight electric vehicle frame as described in claim 1, characterized in that: The second functional area (104) is a single-tube frame structure, and the area enclosed by the frame is the battery modification area.

9. The lightweight electric vehicle frame as described in claim 1, characterized in that: The rear side tube (2) is a single-tube bending component.

Images