Assembling type electric vehicle frame structure

Abstract

The invention relates to the technical field of electric vehicles, and discloses a split mounting type electric vehicle frame structure which comprises a main frame, a wheel support and a shock absorber, a supporting assembly is arranged on the shock absorber, a stabilizing assembly is arranged between the supporting assembly and the wheel support, and a sleeving assembly is arranged between the supporting assembly and the main frame. The supporting assembly is introduced between the shock absorber and the main frame, the connecting rod structure of the supporting assembly forms a parallelogram frame, when the shock absorber is compressed, the connecting rod structure of the supporting assembly is retracted inwards, the parallelogram contour area is reduced, and impact energy is efficiently absorbed; the area of the parallelogram profile is increased, the vibration buffering stroke is prolonged, bumping of a bicycle body is reduced, compared with a traditional shock-proof design, flexibility is achieved, more comfortable and controllable riding experience is provided for a user, shock-proof pressure is shared, the strength of the whole structure is improved, and structural deformation or breakage is prevented.

Description

Technical Field

[0001] This invention relates to the field of electric vehicle technology, and more specifically to an assembled electric vehicle frame structure. Background Technology

[0002] Electric vehicles are pure electric vehicles powered by batteries and driven by electric motors. In recent years, they have become very popular in my country.

[0003] Currently, the shock absorbers of electric vehicles are generally directly fixed between the frame and the wheel bracket. On bumpy roads, the frame is stressed at a single connection point, which can easily lead to structural deformation or even breakage, shortening its service life. In addition, the vibration energy is directly transmitted to the frame, affecting riding comfort. Furthermore, the existing electric vehicle frames generally adopt a welded or one-piece structure. Too many rigid connection methods lead to the need for complete replacement when local damage occurs, which greatly increases the difficulty and cost of maintenance. Summary of the Invention

[0004] In order to overcome the shortcomings of existing technology where shock absorbers are directly fixed between the frame and wheel brackets, the stress on the frame is concentrated at a single connection point on bumpy roads, which can easily lead to structural deformation or even breakage, this invention provides a modular electric vehicle frame structure to solve the problems existing in the background technology.

[0005] An assembled electric vehicle frame structure includes a main frame, wheel brackets, and shock absorbers. A support component is provided on the shock absorber, a stabilizing component is provided between the support component and the wheel bracket, and a connecting component is provided between the support component and the main frame. The support component is used to amplify the buffer stroke and distribute the force through the coordinated movement of its internal linkage structure when the shock absorber is activated. The connecting component is used to install the support component onto the main frame, making the main frame one fulcrum of the support component. The stabilizing component is used to install the support component onto the wheel bracket, making the wheel bracket another fulcrum of the support component.

[0006] Preferably, the support assembly includes a receiving member, a connecting member, a first connecting rod, and a second connecting rod. One end of the receiving member is fixedly connected to a fixed shaft, and the other end of the receiving member is fixedly connected to an installation shaft. One end of the connecting member is fixedly connected to a positioning shaft, and the other end of the connecting member is fixedly connected to a limit shaft.

[0007] Preferably, each support assembly includes two first links and two second links, with the two first links welded together by a connecting block, and a rotating shaft welded to one of the first links.

[0008] Preferably, one end of connecting rod one is rotatably connected to the positioning shaft, and the other end of connecting rod one is rotatably connected to the fixed shaft; one end of connecting rod two is rotatably connected to the limiting shaft, and the other end of connecting rod two is rotatably connected to the mounting shaft; the outline formed by connecting rod one, the receiving part, connecting rod two, and the connecting part is a parallelogram.

[0009] Preferably, the sleeve assembly includes a lower support plate and an upper support plate. The lower support plate is welded to the receiving component through a mounting post. Both the lower support plate and the upper support plate have a semi-circular ring structure. The lower support plate and the upper support plate are sleeved on the surface of the main frame and are fixedly connected by bolts and nuts.

[0010] Preferably, the stabilizing component includes a mounting rod and a U-shaped rod. One end of the mounting rod is welded with a connecting piece, and two connecting pieces are provided at one end of the mounting rod. The other end of the mounting rod is welded with a positioning plate. The U-shaped rod is fixedly connected to the wheel bracket by bolts and nuts.

[0011] Preferably, both ends of the U-shaped rod are welded with connecting claws, the connecting piece is inserted into the connecting claw, and the connecting piece and the connecting claw are fixedly connected by bolts and nuts.

[0012] Preferably, the bottom of the connector has a threaded groove, and the bolt passes through the positioning plate and is threaded into the threaded groove.

[0013] Preferably, a fixing block is provided at one end of the shock absorber, and the other end of the shock absorber is rotatably connected to the surface of the rotating shaft.

[0014] Preferably, a rotating shaft is fixedly connected to the fixed block, one end of the shock absorber is rotatably mounted on the surface of the rotating shaft, and the fixed block and the wheel bracket are fixedly connected by bolts and nuts.

[0015] The beneficial effects of this invention are: In this invention, a support component is introduced between the shock absorber and the main frame. The linkage structure of the support component forms a parallelogram frame. When the shock absorber compresses, the linkage structure of the support component retracts, reducing the area of ​​the parallelogram outline and efficiently absorbing impact energy. When the shock absorber extends, the linkage structure of the support component expands, increasing the area of ​​the parallelogram outline and extending the vibration buffer stroke, reducing vehicle bumps. Compared with traditional shock absorber designs, this is more flexible, providing users with a more comfortable and controllable riding experience. It also distributes the shock absorber pressure, improves the overall structural strength, and prevents structural deformation or breakage. In addition, the sleeve component of this invention enables quick assembly and disassembly of the main frame and the support component, and the stabilizing component simplifies the connection between the wheel bracket and the support component, lowering the assembly threshold. All components are fixed with standardized bolts, facilitating maintenance and partial replacement. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 This is a schematic diagram of the support component, shock absorber, stabilizing component and sleeve component of the present invention.

[0019] Figure 3 This is a schematic diagram of the support component structure of the present invention.

[0020] Figure 4 This is a schematic diagram of the receiving component structure of the present invention.

[0021] Figure 5 This is a schematic diagram of the connector structure of the present invention.

[0022] Figure 6 This is a schematic diagram of the connecting rod structure of the present invention.

[0023] Figure 7 This is a diagram showing the mating of the socket assembly and the main frame of the present invention.

[0024] Figure 8 This is a diagram showing the assembly of the shock absorber and wheel bracket of the present invention.

[0025] Figure 9 This is a diagram showing the mating of the stabilizing component and the wheel bracket of the present invention.

[0026] Figure 10 This is a diagram showing the mating of the mounting rod and connector of the present invention.

[0027] The attached diagram is labeled as follows: 1. Main frame; 2. Wheel bracket; 3. Support assembly; 31. Receiving part; 311. Fixed shaft; 312. Mounting shaft; 32. Connecting part; 321. Positioning shaft; 322. Limiting shaft; 33. Link 1; 331. Connecting block; 332. Rotating shaft; 34. Link 2; 4. Shock absorber; 41. Fixed block; 42. Rotating shaft; 5. Stabilizing assembly; 51. Mounting rod; 511. Connecting piece; 512. Positioning plate; 52. U-shaped rod; 521. Connecting claw; 6. Sleeve assembly; 61. Lower support piece; 62. Upper support piece; 63. Mounting column. Detailed Implementation

[0028] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0029] Reference Figures 1-2This invention provides a modular electric vehicle frame structure, including a main frame 1, wheel brackets 2, and shock absorbers 4. A support component 3 is mounted on the shock absorber 4, a stabilizing component 5 is positioned between the support component 3 and the wheel bracket 2, and a connecting component 6 is positioned between the support component 3 and the main frame 1. The support component 3 amplifies the buffer stroke and distributes the force through the coordinated movement of its internal linkage structure when the shock absorber 4 operates. The connecting component 6 mounts the support component 3 onto the main frame 1, making the main frame 1 one fulcrum of the support component 3. The stabilizing component 5 mounts the support component 3 onto the wheel bracket 2, making the wheel bracket 2 another fulcrum of the support component 3. By linking the support component 3 with the shock absorber 4, and with the connecting component 6 and the stabilizing component 5 respectively transforming the main frame 1 and the wheel bracket 2 into cooperating fulcrums, a multi-directional force-bearing structure is formed, solving the problem of easy damage due to single-point pressure on traditional frames.

[0030] Reference Figures 1-6 The support assembly 3 includes a receiving component 31, a connecting component 32, a first connecting rod 33, and a second connecting rod 34. One end of the receiving component 31 is fixedly connected to a fixed shaft 311, and the other end is fixedly connected to an installation shaft 312. One end of the connecting component 32 is fixedly connected to a positioning shaft 321, and the other end is fixedly connected to a limiting shaft 322. Each support assembly 3 contains two first connecting rods 33 and two second connecting rods 34. The two first connecting rods 33 are welded together via a connecting block 331, and a rotating shaft 332 is welded onto one of the first connecting rods 33. The two first connecting rods 33 are welded together to form a rigid whole via the connecting block 331, significantly improving torsional strength and suppressing lateral tilting. The rotating shaft 332 is directly connected to the shock absorber 4, achieving precise conversion from linear vibration to rotational motion. The four-axis layout of the fixed shaft 311, installation shaft 312, positioning shaft 321, and limiting shaft 322 provides a basic support for the overall structure's movement.

[0031] One end of connecting rod 33 is rotatably connected to positioning shaft 321, and the other end of connecting rod 33 is rotatably connected to fixed shaft 311. One end of connecting rod 34 is rotatably connected to limiting shaft 322, and the other end of connecting rod 34 is rotatably connected to mounting shaft 312. The outline formed by connecting rod 33, receiving part 31, connecting rod 34, and connecting part 32 is a parallelogram. The area of ​​the parallelogram outline changes dynamically in real time with the movement of shock absorber 4. When the spring on shock absorber 4 is compressed, the outline area shrinks, which can absorb high-frequency impacts and optimize the riding experience on gravel roads. When the spring on shock absorber 4 is extended, the outline area increases, which can extend the low-frequency vibration buffer stroke and optimize the riding experience when going over speed bumps. In addition, while connecting rod 33 rotates around positioning shaft 321, connecting rod 34 rotates synchronously around limiting shaft 322. Connecting rod 33 and connecting rod 34 cooperate to disperse the impact force to positioning shaft 321 and limiting shaft 322, avoiding local stress concentration.

[0032] During use, while riding the electric vehicle, the spring on the shock absorber 4 will switch between tightening and extending due to vibration. When the spring on the shock absorber 4 tightens, the first connecting rod 33 rotates clockwise around the positioning shaft 321. At the same time, the second connecting rod 34 rotates clockwise around the limiting shaft 322. The first connecting rod 33 and the second connecting rod 34 together pull the supporting part 31 and the main frame 1 to move synchronously. The first connecting rod 33, the supporting part 31, and the second connecting rod 34... As the area of ​​the parallelogram formed by the shock absorber 4 and the connecting member 32 decreases, when the spring on the shock absorber 4 extends, the first connecting rod 33 rotates counterclockwise around the positioning shaft 321. At the same time, the second connecting rod 34 rotates counterclockwise around the limiting shaft 322. The first connecting rod 33 and the second connecting rod 34 together pull the main frame 1 and the supporting member 31 to move synchronously. The area of ​​the parallelogram formed by the first connecting rod 33, the supporting member 31, the second connecting rod 34 and the connecting member 32 increases.

[0033] In summary, the linkage structure of support component 3 forms a parallelogram frame. When the shock absorber 4 is compressed, the linkage structure of support component 3 contracts inward, reducing the area of ​​the parallelogram outline and efficiently absorbing impact energy. When the shock absorber 4 is extended, the linkage structure of support component 3 expands outward, increasing the area of ​​the parallelogram outline and extending the vibration buffer stroke, reducing vehicle body bumps. Compared with traditional shock absorber designs, it is more flexible, distributes the shock absorption pressure, improves the overall structural strength, and provides users with a more comfortable and controllable riding experience.

[0034] Reference Figures 1-7 The sleeve assembly 6 includes a lower support plate 61 and an upper support plate 62. The lower support plate 61 is welded to the receiving part 31 through a mounting post 63. Both the lower support plate 61 and the upper support plate 62 have a semi-circular ring structure. The lower support plate 61 and the upper support plate 62 are sleeved on the surface of the main frame 1 and are fixedly connected by bolts and nuts.

[0035] In summary, the connecting component 6 adopts a split ring design, which can be quickly connected and fixed to the main frame 1 by bolts and nuts. This allows the main frame 1 to become a rigid support point for the supporting component 3 without any processing, significantly improving the convenience of modification and structural compatibility.

[0036] Reference Figures 1-8 One end of the shock absorber 4 is provided with a fixing block 41, and the other end of the shock absorber 4 is rotatably connected to the surface of the rotating shaft 332. The rotating shaft 42 is fixedly connected to the fixing block 41. One end of the shock absorber 4 is rotatably installed on the surface of the rotating shaft 42. The fixing block 41 and the wheel bracket 2 are fixedly connected by bolts and nuts.

[0037] In summary, the shock absorber 4 is connected by a dual-degree-of-freedom rotating shaft 42 and a rotating shaft 332, and is fixed to the wheel bracket 2 and the support assembly 3 respectively. This allows the shock absorber 4 to freely adjust its position in multiple directions. This design avoids stress concentration during vibration transmission, and the bolt fixing method simplifies the disassembly and assembly process, making maintenance and replacement easier.

[0038] Reference Figures 1-10 The stabilizing component 5 includes a mounting rod 51 and a U-shaped rod 52. A connecting piece 511 is welded to one end of the mounting rod 51, and two connecting pieces 511 are symmetrically arranged at one end of the mounting rod 51. A positioning plate 512 is welded to the other end of the mounting rod 51. The U-shaped rod 52 is fixedly connected to the wheel bracket 2 by bolts and nuts. Connecting claws 521 are welded to both ends of the U-shaped rod 52. The connecting piece 511 is inserted into the connecting claw 521, and the connecting piece 511 and the connecting claw 521 are fixedly connected by bolts and nuts. A threaded groove is opened at the bottom of the connecting part 32, and the bolt passes through the positioning plate 512 and is threaded into the threaded groove.

[0039] In summary, the stabilizing component 5, through the plug-in connection structure of the connecting piece 511 inserted into the connecting claw 521 and the coordinated locking with the bolt and nut, transforms the wheel bracket 2 into a rigid fulcrum for supporting the component 3. The direct connection design of the threaded groove between the mounting rod 51 and the connector 32 further enhances the stability of the fulcrum, ensuring that the connection does not loosen under vibration and impact. At the same time, the modular plug-in method also greatly reduces the assembly complexity.

[0040] The working principle of this invention is as follows: The user places the lower support plate 61 and the upper support plate 62 on the surface of the main frame 1, and fixes the lower support plate 61 and the upper support plate 62 together with bolts and nuts, thereby fixing the receiving part 31 to the main frame 1. Then, the positioning plate 512 is aligned with the threaded groove at the bottom of the connecting part 32, and the bolt is passed through the positioning plate 512 and screwed into the threaded groove, thereby fixing the mounting rod 51 to the connecting part 32. Then, the connecting piece 511 is inserted into the connecting claw 521, and the connecting piece 511 and the connecting claw 521 are fixedly connected with bolts and nuts, thereby fixing the mounting rod 51 to the U-shaped rod 52. Then, the U-shaped rod 52 is fixedly connected to the wheel bracket 2 with bolts and nuts. Finally, the fixing block 41 is fixedly connected to the wheel bracket 2 with bolts and nuts, thus completing the installation.

[0041] During the riding of the electric vehicle, the spring on the shock absorber 4 will switch back and forth between tightening and extending due to vibration. When the spring on the shock absorber 4 tightens, the first connecting rod 33 rotates clockwise around the positioning shaft 321, and at the same time, the second connecting rod 34 rotates clockwise around the limiting shaft 322. The first connecting rod 33 and the second connecting rod 34 together pull the supporting member 31 and the main frame 1 to move synchronously. The area of ​​the parallelogram outline formed by the first connecting rod 33, the supporting member 31, the second connecting rod 34 and the connecting member 32 becomes smaller. When the spring on the shock absorber 4 extends, the first connecting rod 33 rotates counterclockwise around the positioning shaft 321, and at the same time, the second connecting rod 34 rotates counterclockwise around the limiting shaft 322. The first connecting rod 33 and the second connecting rod 34 together pull the main frame 1 and the supporting member 31 to move synchronously. The area of ​​the parallelogram outline formed by the first connecting rod 33, the supporting member 31, the second connecting rod 34 and the connecting member 32 becomes larger.

[0042] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A modular electric vehicle frame structure, comprising a main frame (1), wheel brackets (2), and shock absorbers (4), characterized in that, A support component (3) is provided on the shock absorber (4). A stabilizing component (5) is provided between the support component (3) and the wheel bracket (2). A connecting component (6) is provided between the support component (3) and the main frame (1). The support component (3) is used to amplify the buffer stroke and distribute the force through the coordinated movement of its internal linkage structure when the shock absorber (4) is activated. The connecting component (6) is used to install the support component (3) onto the main frame (1) and make the main frame (1) one fulcrum of the support component (3). The stabilizing component (5) is used to install the support component (3) onto the wheel bracket (2) and make the wheel bracket (2) another fulcrum of the support component (3).

2. The assembled electric vehicle frame structure according to claim 1, characterized in that, The support assembly (3) includes a receiving part (31), a connecting part (32), a first connecting rod (33) and a second connecting rod (34). One end of the receiving part (31) is fixedly connected to a fixed shaft (311), and the other end of the receiving part (31) is fixedly connected to an installation shaft (312). One end of the connecting part (32) is fixedly connected to a positioning shaft (321), and the other end of the connecting part (32) is fixedly connected to a limit shaft (322).

3. The assembled electric vehicle frame structure according to claim 2, characterized in that, Each support assembly (3) includes two first links (33) and two second links (34), the two first links (33) are welded together by a connecting block (331), and a rotating shaft (332) is welded to one of the first links (33).

4. The assembled electric vehicle frame structure according to claim 3, characterized in that, One end of connecting rod 1 (33) is rotatably connected to the positioning shaft (321), and the other end of connecting rod 1 (33) is rotatably connected to the fixed shaft (311). One end of connecting rod 2 (34) is rotatably connected to the limiting shaft (322), and the other end of connecting rod 2 (34) is rotatably connected to the mounting shaft (312). The outline formed by connecting rod 1 (33), the receiving part (31), connecting rod 2 (34) and the connecting part (32) is a parallelogram.

5. The assembled electric vehicle frame structure according to claim 4, characterized in that, The sleeve assembly (6) includes a lower support plate (61) and an upper support plate (62). The lower support plate (61) is welded to the receiving part (31) through a mounting post (63). Both the lower support plate (61) and the upper support plate (62) are semi-circular ring structures. The lower support plate (61) and the upper support plate (62) are sleeved on the surface of the main frame (1) and are fixedly connected by bolts and nuts.

6. The assembled electric vehicle frame structure according to claim 5, characterized in that, The stabilizing component (5) includes a mounting rod (51) and a U-shaped rod (52). A connecting piece (511) is welded to one end of the mounting rod (51), and two connecting pieces (511) are provided at one end of the mounting rod (51). A positioning plate (512) is welded to the other end of the mounting rod (51). The U-shaped rod (52) is fixedly connected to the wheel bracket (2) by bolts and nuts.

7. The assembled electric vehicle frame structure according to claim 6, characterized in that, Both ends of the U-shaped rod (52) are welded with connecting claws (521). The connecting piece (511) is inserted into the connecting claw (521), and the connecting piece (511) and the connecting claw (521) are fixedly connected by bolts and nuts.

8. The assembled electric vehicle frame structure according to claim 7, characterized in that, The bottom of the connector (32) has a threaded groove, and the bolt passes through the positioning plate (512) and is threaded into the threaded groove.

9. The assembled electric vehicle frame structure according to claim 8, characterized in that, One end of the shock absorber (4) is provided with a fixing block (41), and the other end of the shock absorber (4) is rotatably connected to the surface of the rotating shaft (332).

10. The assembled electric vehicle frame structure according to claim 9, characterized in that, A rotating shaft (42) is fixedly connected to the fixed block (41). One end of the shock absorber (4) is rotatably installed on the surface of the rotating shaft (42). The fixed block (41) and the wheel bracket (2) are fixedly connected by bolts and nuts.

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