Electric motorcycle frame

Abstract

The utility model discloses an electric motorcycle frame structure in the field of electric motorcycles, which comprises a first frame plate and a second frame plate, the first frame plate and the second frame plate are of a symmetrical structure, the top of the first frame plate and the top of the second frame plate are integrally and fixedly connected with a top reinforcing plate, and a top sealing plate is arranged on the first frame plate and the second frame plate and located above the top reinforcing plate. And side buckle plates are integrally formed on the top sealing plate and located on the two sides of the first frame plate and the two sides of the second frame plate. The middle anti-deformation supporting columns used for reinforcing are arranged between the first frame plate and the second frame plate, so that during assembly, the width of the two frame plates can be positioned, the assembly efficiency is improved, meanwhile, the reinforcing effect can be achieved, the supporting rigidity of the frame is ensured, and during wiring, the middle anti-deformation supporting columns used for reinforcing are arranged on the frame plates. And the excessive length of wire is wound on the middle anti-deformation supporting column, so that the wire is collected and neatened, the wire is prevented from being overlapped on the battery, and the safety coefficient is improved.

Description

Technical Field

[0001] This utility model relates to the field of electric motorcycles, specifically to electric motorcycle frames. Background Technology

[0002] With the booming development of new energy technologies, the market share of electric motorcycles is constantly expanding. In the production process of electric motorcycles, the frame, as a key component, directly affects the performance and safety of the entire vehicle. However, existing motorcycle frames have many problems. For example, in the assembly stage, the lack of effective positioning support in the central area makes it difficult to accurately control the size of the hollow cavity, thus reducing assembly efficiency. For instance, in the detachable electric motorcycle frame with application number CN202320317153.3, the overall thickness is uniform, and the structure of individual components is relatively complex, requiring casting or machining, resulting in high cost and low efficiency. Furthermore, the overall rigidity is greatly affected by the thickness of the sheet metal, and the lack of necessary reinforcement measures leads to poor overall rigidity. Some frame components must rely on machining, which not only increases processing difficulty but also reduces processing efficiency. Taking a common electric motorcycle frame as an example, due to inaccurate positioning during assembly, the assembly time for a single piece can be as long as 30 minutes, and the deformation can reach 4mm when subjected to a 2000N vertical load, seriously affecting the quality and performance of the frame.

[0003] Therefore, those skilled in the art have provided electric motorcycle frames to address the problems mentioned in the background section. Utility Model Content

[0004] The purpose of this invention is to provide an electric motorcycle frame to solve the problems mentioned in the background section.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] This utility model provides an electric motorcycle frame, including a frame plate one and a frame plate two arranged symmetrically. A top reinforcing plate is integrally fixed to the top of the frame plate one and the frame plate two. A top sealing plate is provided on the frame plate one and the frame plate two above the top reinforcing plate. The top sealing plate has edge fasteners integrally formed on both sides of the frame plate one and the frame plate two. One side of the edge fastener has an integrally formed folded edge, which fastens to the top of the frame plate one and the frame plate two. The top sealing plate and the top reinforcing plate are connected by hinges. End sealing plates are welded to the ends of the frame plate one and the frame plate two.

[0007] A central anti-deformation support column for reinforcement is provided between frame plate one and frame plate two. The central anti-deformation support column is connected to both frame plate one and frame plate two by anti-loosening screws.

[0008] A bottom sealing plate is integrally and fixedly connected to the bottom of frame plate one and frame plate two. A bottom sealing plate is fixedly connected to the other side of the bottom of frame plate one and frame plate two. An arc-shaped groove is provided at the end of bottom sealing plate one. A wire-passing round hole is provided on one side of the arc-shaped groove on bottom sealing plate one. A heat dissipation mesh is provided on one side of the wire-passing round hole on bottom sealing plate one.

[0009] Furthermore, each of the frame plate 1 and the frame plate 2 has a reinforcing protrusion 1 and a reinforcing protrusion 2 on its side wall away from each other. The reinforcing protrusion 1 and the reinforcing protrusion 2 are connected to the frame plate 1 and the frame plate 2 by built-in screws.

[0010] Furthermore, multiple elongated heat dissipation holes are provided on the bottom cover plate 2, and a mounting plate is provided below the bottom cover plate 2 to be fixedly connected to the frame plate 1 and the frame plate 2. The mounting plate is provided with fixing elongated holes.

[0011] Furthermore, the heat dissipation mesh is arranged in an array, with a diameter of 5-8mm, and the width of the elongated heat dissipation holes is 3-5mm, and the length is 15-25mm.

[0012] Furthermore, a wire-passing sealing plate is fixedly connected between frame plate one and frame plate two below the end sealing plate, and a wire-passing long hole is provided on the wire-passing sealing plate.

[0013] Furthermore, the thickness of the first and second reinforcing protrusions is 1.2-1.5 times that of the first and second frame plates, and they are fixed with countersunk screws.

[0014] Furthermore, an arc-shaped groove 2 is provided on one side of the top reinforcing plate. Arc-shaped groove 1 and arc-shaped groove 2 are used to fix the welded front fork tube.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model provides a central anti-deformation support column for reinforcement between frame plate one and frame plate two. During assembly, the width of the two frame plates can be positioned to improve assembly efficiency. At the same time, it can also play a reinforcing role to ensure the support rigidity of the frame. In addition, when wiring, excess wire can be wrapped around the central anti-deformation support column to tidy up the wires and avoid them from touching the battery, thus improving the safety factor.

[0017] 2. By setting a fixed protruding plate one and a fixed protruding plate two, this utility model can serve a decorative purpose on the one hand, and thicken and reinforce the frame plate one and the frame plate two on the other hand, thereby improving the overall strength of the frame.

[0018] 3. This utility model involves batch cutting the entire frame into sections and then bending, punching, and welding it together. This simplifies the operation time and process of each step, making it easier to achieve material cutting and assembly through automated processing. The process is simple and can greatly improve production efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a bottom view of the structure of this utility model;

[0021] Figure 3 For the explosion of this utility model Figure 1 ;

[0022] Figure 4 For the explosion of this utility model Figure 2 .

[0023] In the diagram: 1. Frame plate one; 2. Frame plate two; 3. Top sealing plate; 301. Edge fastening plate; 302. Folded edge; 4. End sealing plate; 5. Bottom sealing plate one; 501. Heat dissipation mesh; 502. Cable guide hole; 503. Arc groove one; 6. Bottom sealing plate two; 601. Heat dissipation elongated hole; 7. Mounting fixing plate; 701. Fixing elongated hole; 8. Top reinforcement plate; 801. Arc groove two; 9. Cable guide sealing plate; 901. Cable guide elongated hole; 10. Reinforcing protrusion plate one; 11. Reinforcing protrusion plate two; 12. Central anti-deformation support column. Detailed Implementation

[0024] Please see Figures 1-4 An electric motorcycle frame includes a frame plate 1 and a frame plate 2 symmetrically arranged. A top reinforcement plate 8 is integrally fixed to the top of the frame plate 1 and the frame plate 2. A top sealing plate 3 is provided on the frame plate 1 and the frame plate 2 above the top reinforcement plate 8. The top sealing plate 3 has an edge fastener 301 integrally formed on both sides of the frame plate 1 and the frame plate 2. One side of the edge fastener 301 has an integrally formed folded edge 302, which is fastened to the top of the frame plate 1 and the frame plate 2. The top sealing plate 3 is connected to the top reinforcement plate 8 by a hinge. An end sealing plate 4 is welded to the end of the frame plate 1 and the frame plate 2. The top sealing plate 3 can rotate along the hinge to open and close the top, which facilitates battery replacement and maintenance operations.

[0025] A central anti-deformation support column 12 for reinforcement is provided between frame plate 1 and frame plate 2. The central anti-deformation support column 12 is connected to both frame plate 1 and frame plate 2 by anti-loosening screws.

[0026] Among them, the bottom of the frame plate 1 and the frame plate 2 are integrally fixedly connected to the bottom of the bottom of the frame plate 1 and the frame plate 2, and the bottom of the frame plate 1 and the frame plate 2 are fixedly connected to the other side of the bottom of the frame plate 1 and the frame plate 2. The bottom of the frame plate 1 has an arc groove 503 at the end. The bottom of the frame plate 1 has a wire-passing round hole 502 on one side of the arc groove 503. The bottom of the frame plate 1 has a heat dissipation mesh 501 on one side of the wire-passing round hole 502. The heat dissipation mesh 501 can be installed with a cooling fan. The heat dissipation fan will dissipate heat from the heat dissipation mesh 501 to achieve heat dissipation of the internal battery.

[0027] On the side walls of frame plate 1 and frame plate 2, which are far apart from each other, there are reinforcing protrusions 10 and 11. The reinforcing protrusions 10 and 11 are connected to frame plate 1 and frame plate 2 by built-in screws. The thickness of the reinforcing protrusions 10 and 11 is 1.2-1.5 times the thickness of frame plate 1 and frame plate 2, and they are fixed by countersunk screws. By setting the reinforcing protrusions 10 and 11, they can serve both a decorative purpose and a purpose of thickening and reinforcing frame plate 1 and frame plate 2, thereby improving the overall strength of the frame.

[0028] By adopting the above technical solution, and by setting a central anti-deformation support column 12 for reinforcement between frame plate 1 and frame plate 2, the width of the two frame plates can be positioned during assembly, improving assembly efficiency. At the same time, it can also play a reinforcing role, ensuring the support rigidity of the frame. Moreover, when wiring, excess wire length can be wrapped around the central anti-deformation support column 12 to tidy up the wiring, avoid it from touching the battery, and improve the safety factor.

[0029] The bottom cover plate 6 has multiple elongated heat dissipation holes 601. Below the bottom cover plate 6, there is a mounting plate 7 that is fixedly connected to the frame plate 1 and the frame plate 2. The mounting plate 7 has elongated fixing holes 701, which can be used to fix the frame. The heat dissipation mesh holes 501 are arranged in an array and the hole diameter is 5-8mm. The width of the elongated heat dissipation holes 601 is 3-5mm and the length is 15-25mm.

[0030] Among them, a wire-passing sealing plate 9 is fixedly connected between the frame plate 1 and the frame plate 2 below the end sealing plate 4. The wire-passing sealing plate 9 has a wire-passing long hole 901, which facilitates the passage of power supply wiring.

[0031] Among them, an arc-shaped groove 801 is provided on one side of the top reinforcing plate 8. The arc-shaped groove 503 and the arc-shaped groove 801 are used to fix the welded front fork tube.

[0032] The method for manufacturing an electric motorcycle frame includes the following steps:

[0033] S101. Cutting: Cut the frame plate 1, frame plate 2, top sealing plate 3, bottom sealing plate 1, bottom sealing plate 2, mounting and fixing plate 7, wire passing sealing plate 9, top reinforcing plate 8 and end sealing plate 4 according to their unfolded dimensions.

[0034] S102, Bending and punching: Bending and punching operations are performed on the top sealing plate 3 and the bottom sealing plate 2 6, and punching operations are performed on the bottom sealing plate 1 5, the top reinforcing plate 8, and the wire-passing sealing plate 9 to punch out the corresponding holes.

[0035] S103. Assembly: First, fix the reinforcing protrusion 10 and the reinforcing protrusion 2 11 to the frame plate 1 and the frame plate 2 2 with anti-removal screws. Then, install the middle anti-deformation support column 12 between the frame plate 1 and the frame plate 2 2 with screws to achieve the positioning of the distance between the frame plate 1 and the frame plate 2 2. Then, weld the top reinforcing plate 8, the bottom sealing plate 1 5, the bottom sealing plate 2 6 and the cable guide sealing plate 9. Then, weld and fix the mounting plate 7 and the end sealing plate 4. Weld the front fork tube to the arc groove 1 503 and the arc groove 2 801.

[0036] S104. The top sealing plate 3 and the top reinforcing plate 8 are fixed by hinges. The top sealing plate 3 can be opened and closed along the hinges to facilitate the installation of the battery and the arrangement of the wiring.

[0037] In step S102, the punching process uses a CNC punching machine, and the punching accuracy is controlled within ±0.1mm. In step S103, the installation of the central anti-deformation support column 12 is assisted by a positioning fixture to ensure the symmetry and spacing accuracy of the frame plate 1 and the frame plate 2. Welding is done by robot welding, and the welding parameters are current 180-220A, voltage 20-24V, and welding speed 5-8mm / s.

[0038] By adopting the above technical solution, the entire frame is cut into batches in stages and then bent, punched and welded. This simplifies the operation time and process of each step, and makes it easier to achieve material cutting and assembly through automated processing. The process steps are simple and can greatly improve production efficiency. The preparation method of cutting, bending, punching and welding in stages is simple and easy to automate.

[0039] A comparative test was conducted using the frame of this utility model (example) and a conventional one-piece frame (comparative example):

[0040] I. Frame Rigidity Test

[0041] 1. Testing Standards and Specifications

[0042] 1.1 Testing Standards:

[0043] GB / T 24170-2009 Determination of forming limit curves for sheet and strip metal materials; ISO 4136:2012 Static strength test method for road vehicle frames; JIS D 0105 Rigidity test method for motorcycle frames.

[0044] 1.2 Test Equipment:

[0045] INSTRON 5985 universal testing machine (accuracy class 0.5); laser displacement sensor (accuracy ±0.01mm); digital strain acquisition system (sampling frequency 1kHz);

[0046] 1.3 Test Environment:

[0047] Temperature: 23±2℃; Humidity: 50±5%RH; Vibration isolation: Complies with ISO 1940-1 G2.5 balance class.

[0048] 1.4 Specimen Requirements:

[0049]

[0050] 2. Rigidity test comparison data table

[0051] 2.1 Static bending stiffness test:

[0052]

[0053] 2.2 Torsional stiffness test (200 Nm torque):

[0054]

[0055] 2.3 Dynamic fatigue testing:

[0056]

[0057] 2.4 Modal analysis results:

[0058]

[0059] 3. Test Result Analysis

[0060] 3.1 Structural optimization effect:

[0061] The central anti-deformation support column contributes approximately 35% to the stiffness increase;

[0062] The reinforced protrusion design contributes approximately 20% to the modal frequency increase;

[0063] Symmetrical structural design reduces stress concentration factor by up to 40%;

[0064] 3.2 Weight Comparison:

[0065]

[0066] II. Heat dissipation performance test:

[0067] 1. Battery compartment temperature comparison (ambient temperature 25℃):

[0068]

[0069] 2. Improved heat dissipation vents:

[0070] The combined design of the heat dissipation mesh (501) and the elongated heat dissipation holes (601) increases airflow by 35%;

[0071] Temperature uniformity tests showed that the maximum temperature difference in the battery compartment was reduced from 8°C in the traditional design to 3°C.

[0072] Test method: A FLIR T1020 infrared thermal imager was used, and the test condition was continuous discharge at rated power.

[0073] III. Verification of Assembly Efficiency Improvement

[0074] Mass production test data:

[0075] 1. Assembly time for a single frame component:

[0076] Traditional process: 25.3 minutes

[0077] The process of this utility model: 16.8 minutes

[0078] Efficiency improvement: (25.3-16.8) / 25.3×100%=33.6%

[0079] 2. Comparison of pass rates:

[0080] Example: 98.7% (n=1000);

[0081] Comparative example: 92.3% (n=1000);

[0082] 3. Positioning accuracy:

[0083] Frame plate spacing error: ±0.15mm (traditional process ±0.5mm);

[0084] Front fork tube welding position accuracy: 0.2mm (0.8mm for traditional process).

[0085] The central anti-deformation support column positions frame plate one and frame plate two, effectively shortening the assembly time.

[0086] IV. Effects of Line Management Optimization

[0087] 1. Wire harness fixation test:

[0088] After a traditional frame vibration test (50,000 cycles), the wiring harness loosening rate was 23%.

[0089] The loosening rate of the wire trough structure of this utility model is 2%.

[0090] 2. Cabling efficiency:

[0091] Example: Average wiring time 3.2 minutes;

[0092] Comparative example: Average wiring time 5.8 minutes.

[0093] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An electric motorcycle frame, comprising a frame plate one (1) and a frame plate two (2) symmetrically arranged, characterized in that: A top reinforcing plate (8) is integrally fixedly connected to the top of the frame plate 1 (1) and the frame plate 2 (2). A top sealing plate (3) is provided on the frame plate 1 (1) and the frame plate 2 (2) above the top reinforcing plate (8). The top sealing plate (3) is integrally formed with side fasteners (301) on both sides of the frame plate 1 (1) and the frame plate 2 (2). A folded edge (302) is integrally formed on one side of the side fastener (301). The folded edge (302) is fastened above the frame plate 1 (1) and the frame plate 2 (2). The top sealing plate (3) is connected to the top reinforcing plate (8) by a hinge. End sealing plates (4) are welded to the ends of the frame plate 1 (1) and the frame plate 2 (2). A central anti-deformation support column (12) for reinforcement is provided between the first frame plate (1) and the second frame plate (2). The central anti-deformation support column (12) is connected to the first frame plate (1) and the second frame plate (2) by anti-loosening screws. The bottom of the frame plate 1 (1) and the frame plate 2 (2) are integrally fixedly connected with a bottom sealing plate 1 (5), and the bottom of the frame plate 1 (1) and the frame plate 2 (2) are fixedly connected with a bottom sealing plate 2 (6). The bottom sealing plate 1 (5) has an arc groove 1 (503) at its end, a wire-passing round hole (502) is opened on the bottom sealing plate 1 (5) on one side of the arc groove 1 (503), and a heat dissipation mesh hole (501) is opened on the bottom sealing plate 1 (5) on one side of the wire-passing round hole (502). The frame plate 1 (1) and the frame plate 2 (2) are each provided with a reinforcing protrusion 1 (10) and a reinforcing protrusion 2 (11) on the side wall away from each other. The reinforcing protrusion 1 (10) and the reinforcing protrusion 2 (11) are connected to the frame plate 1 (1) and the frame plate 2 (2) by built-in screws.

2. The electric motorcycle frame according to claim 1, characterized in that: The bottom sealing plate 2 (6) has multiple heat dissipation holes (601), and a mounting plate (7) is provided below the bottom sealing plate 2 (6) to be fixedly connected to the frame plate 1 (1) and the frame plate 2 (2). The mounting plate (7) has a fixing hole (701).

3. The electric motorcycle frame according to claim 1, characterized in that: The heat dissipation mesh (501) is arranged in an array and has a diameter of 5-8 mm. The heat dissipation elongated holes (601) have a width of 3-5 mm and a length of 15-25 mm.

4. The electric motorcycle frame according to claim 1, characterized in that: A wire-passing sealing plate (9) is fixedly connected between the first frame plate (1) and the second frame plate (2) below the end sealing plate (4), and a wire-passing long hole (901) is opened on the wire-passing sealing plate (9).

5. The electric motorcycle frame according to claim 1, characterized in that: The thickness of the first reinforcing protrusion (10) and the second reinforcing protrusion (11) is 1.2-1.5 times the thickness of the first frame plate (1) and the second frame plate (2), and they are fixed by countersunk screws.

6. The electric motorcycle frame according to claim 1, characterized in that: The top reinforcing plate (8) has an arc-shaped groove two (801) on one side. The arc-shaped groove one (503) and the arc-shaped groove two (801) are used to fix the welded front fork tube.

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