Lightweight anti-deformation electric motorcycle sheet metal frame structure

Abstract

The invention relates to the technical field of electric motorcycles, in particular to a lightweight anti-deformation electric motorcycle sheet metal frame structure which comprises a frame body, the frame body comprises a mounting frame, a fixing device for fixing a storage battery is arranged at the mounting frame, and the fixing device comprises two mounting seats. The two mounting bases are oppositely arranged and can slide on the mounting frame, clamping plates are arranged on the adjacent end faces of the two mounting bases, and the fixing device further comprises a locking mechanism used for locking the mounting bases. By arranging the two mounting seats capable of sliding along the mounting frame, the distance between the two mounting seats can be flexibly adjusted according to the specifications and sizes of the storage batteries, so that the frame can adapt to the storage batteries of different specifications, and the limitation that a traditional fixed-size battery bin can only adapt to the storage batteries of a single specification is broken through; the technical problem that a small-specification storage battery cannot be reliably fixed is solved, and the universality and adaptability of the frame are improved.

Description

Technical Field

[0001] This invention relates to the field of electric motorcycle technology, and more specifically, to a lightweight, deformation-resistant sheet metal frame structure for electric motorcycles. Background Technology

[0002] Currently, electric motorcycles commonly use lithium batteries as their power storage unit. Compared to traditional lead-acid batteries, lithium batteries have significant advantages in terms of light weight and high energy density, and are typically installed in the battery compartment inside the motorcycle frame. Existing motorcycle frames generally have fixed-size battery compartments, but electric motorcycles have varying configurations (high-end, low-end, etc.), resulting in different lithium battery sizes to suit different needs. When a vehicle has a high-end configuration, the large-size lithium battery fits well with the battery compartment; however, when a low-end configuration uses a small-size lithium battery, not only is reliable battery mounting impossible, but the battery is also difficult to install centrally within the battery compartment. This causes the vehicle's center of gravity to deviate from its central position, ultimately significantly impacting the vehicle's stability and normal driving performance. Summary of the Invention

[0003] To solve the above-mentioned technical problems, the present invention provides the following technical solution.

[0004] A lightweight, deformation-resistant sheet metal frame structure for an electric motorcycle includes a frame body, which includes a square mounting frame. The lower end of the mounting frame has a bottom shell, and the mounting frame and the bottom shell together form a battery compartment for placing a battery. A fixing device for fixing the battery is provided at the mounting frame. The fixing device includes two mounting seats, which are arranged opposite to each other and can slide at the mounting frame. Each of the two mounting seats has a retaining plate at its adjacent end face, which is used to abut against the battery. The fixing device also includes a locking mechanism for locking the mounting seats.

[0005] As a preferred embodiment of the present invention, the mounting base is provided with a mounting cavity, and the upper end of the mounting cavity is provided with a cover plate for sealing the mounting cavity; a connecting rod is slidably provided in the mounting cavity, one end of the connecting rod extends out of the mounting cavity, and the end of the connecting rod extending out of the mounting cavity is provided with a U-shaped connecting frame that is clearance-fitted with the mounting frame.

[0006] As a preferred embodiment of the present invention, a rack is provided on the opposite side of the mounting frame and the U-shaped connecting frame, the locking mechanism includes a locking tooth provided in the U-shaped connecting frame, and a pushing mechanism is provided in the mounting cavity for pushing the locking block to engage with the rack to lock the mounting seat.

[0007] As a preferred embodiment of the present invention, the pushing mechanism includes a rotating rod rotatably disposed in the middle of the mounting cavity, a gear being provided at the rotating rod, and a toothed groove being provided at the connecting rod to mesh with the gear; a slot being provided at the adjacent end face of the cover plate and the gear, distributed circumferentially along the rotating rod; the end of the rotating rod near the cover plate expands outward to form a rotating rod flange, and a locking block being provided at the rotating rod flange to cooperate with the slot; a spring is sleeved on the rotating rod at the lower end of the gear, and the spring is used to push the locking block into the slot to lock the rotating rod.

[0008] As a preferred embodiment of the present invention, the upper end of the rotating rod extends out of the cover plate, and a handwheel is provided at the end of the rotating rod extending out of the cover plate.

[0009] As a preferred embodiment of the present invention, a guide rod is slidably provided in the mounting cavity, the end of the guide rod extends out of the mounting cavity, and the end of the guide rod extending out of the mounting cavity is connected to the U-shaped connecting frame.

[0010] As a preferred embodiment of the present invention, a reinforcing rod is provided in the middle of the U-shaped connecting frame, and a blind hole for mounting cavity is provided at the mounting cavity to fit the reinforcing rod with a clearance, and the end of the reinforcing rod extends into the blind hole for mounting cavity.

[0011] As a preferred embodiment of the present invention, the card plate includes a connecting portion that is bolted to the mounting base, the lower end of the connecting portion extending downward to form a first limiting portion for limiting the horizontal direction of the battery, and the card plate also includes a second limiting portion perpendicular to the first limiting portion, the second limiting portion being used to limit the vertical direction of the battery.

[0012] As a preferred embodiment of the present invention, the card plate is provided with a rubber pad covering the first limiting portion and the second limiting portion.

[0013] As a preferred embodiment of the present invention, the mounting frame and the bottom shell are bolted together.

[0014] The beneficial effects of this invention are as follows:

[0015] 1. This invention, by setting two mounting seats that can slide along the mounting frame, allows for flexible adjustment of the distance between the two mounting seats according to the specifications and size of the battery, enabling the frame to accommodate batteries of different specifications. This breaks the limitation of traditional fixed-size battery compartments that can only accommodate a single specification of battery, solves the technical problem of small-sized batteries not being able to be reliably fixed, and improves the versatility and adaptability of the frame.

[0016] 2. This invention enables the battery to be installed in a central position, ensuring the vehicle's driving stability. The two mounting brackets can slide in opposite directions to precisely fix batteries of different specifications in the center of the battery compartment, ensuring that the motorcycle's overall center of gravity is always located in the center of the vehicle. This solves the problem of vehicle center of gravity shift caused by battery misalignment in the prior art, effectively improving the vehicle's driving stability and handling, and reducing the safety risks of rollover and deviation during vehicle operation.

[0017] 3. In this invention, the locking mechanism adopts a dual locking design of meshing teeth and rack, and engaging blocks and slots. The meshing of teeth and rack achieves initial locking of the mounting base, while the engaging of blocks and slots, combined with the elastic force of springs, effectively prevents the rotating rod from rotating due to vehicle bumps, thus preventing the teeth and rack from disengaging and achieving the anti-loosening effect of the locking structure. This ensures that the battery can maintain a stable fixed state throughout the entire driving cycle of the vehicle, without any movement or deviation. Attached Figure Description

[0018] Figure 1 This is a structural diagram of the lightweight, deformation-resistant electric motorcycle sheet metal frame structure in Example 1;

[0019] Figure 2 This is a cross-sectional view of the lightweight, deformation-resistant electric motorcycle sheet metal frame structure in Example 1;

[0020] Figure 3 This is a cross-sectional view of the lightweight, deformation-resistant electric motorcycle sheet metal frame structure in Example 1;

[0021] Figure 4 for Figure 3 Enlarged view of section A;

[0022] Figure 5 This is a schematic diagram of the mounting base in Example 1;

[0023] Figure 6 This is an exploded view of the mounting base in Example 1;

[0024] Figure 7 This is a schematic diagram of the card plate in Example 1.

[0025] The attached figures are labeled as follows:

[0026] 100. Frame body; 110. Mounting frame; 120. Bottom shell; 130. Battery compartment; 140. Mounting base; 141. Cover plate; 150. Clamping plate; 160. U-shaped connecting bracket; 170. Rack; 180. Handwheel; 210. Mounting cavity; 220. Connecting rod; 230. Clamping tooth; 240. Gear groove; 250. Guide rod; 260. Reinforcing rod; 270. Blind hole in mounting cavity; 410. Rotating rod; 420. Gear; 430. Clamping groove; 440. Rotating rod flange; 450. Clamping block; 460. Spring; 710. Connecting part; 720. First limiting part; 730. Second limiting part; 740. Rubber gasket. Detailed Implementation

[0027] To further understand the content of this invention, a detailed description of the invention will be provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are merely illustrative and not limiting of the invention.

[0028] Example 1, such as Figure 1-7 As shown, this embodiment provides a lightweight, deformation-resistant sheet metal frame structure for an electric motorcycle, which includes a frame body 100. The frame body 100 includes a square mounting frame 110. A bottom shell 120 is provided at the lower end of the mounting frame 110. The mounting frame 110 and the bottom shell 120 together form a battery storage compartment 130 for placing a battery, providing a stable storage space for the battery. A fixing device for clamping and fixing the battery is provided on the mounting frame 110. The fixing device includes two mounting seats 140, which are arranged opposite to each other in the mounting frame 110 and can slide linearly along the mounting frame 110. A retaining plate 150 is provided at the adjacent end face of the two mounting seats 140. The retaining plate 150 can abut against the outer wall of the battery to achieve initial positioning of the battery. The fixing device also includes a locking mechanism for locking the position of the mounting seats 140 after sliding adjustment to prevent the mounting seats 140 from sliding on their own.

[0029] The mounting base 140 has a mounting cavity 210 inside. A cover plate 141 is provided at the upper end of the mounting cavity 210. The cover plate 141 forms a seal and protection for the mounting cavity 210 to prevent external debris from entering the mounting cavity 210 and causing the components to jam. A connecting rod 220 is slidably arranged in the mounting cavity 210. One end of the connecting rod 220 extends out of the side wall of the mounting cavity 210. A U-shaped connecting frame 160 is provided at the end of the connecting rod 220 that extends out of the mounting cavity 210. The U-shaped connecting frame 160 is clearance-fitted with the mounting frame 110 and can slide synchronously with the mounting base 140 along the mounting frame 110.

[0030] A rack 170 is provided at the mating surfaces of the mounting frame 110 and the U-shaped connecting bracket 160. The locking mechanism includes a locking tooth 230 disposed inside the U-shaped connecting bracket 160. The locking tooth 230 is adapted to the rack 170 and can achieve meshing. A pushing mechanism is provided in the mounting cavity 210. The pushing mechanism is used to drive the locking tooth 230 to approach the rack 170 and mesh with the rack 170, thereby achieving locking and positioning of the mounting base 140.

[0031] The driving mechanism includes a rotating rod 410 rotatably disposed in the middle of the mounting cavity 210, a gear 420 fixedly disposed on the rotating rod 410, and a toothed groove 240 disposed on the side of the connecting rod 220 facing the rotating rod 410. The toothed groove 240 meshes with the gear 420 to form a gear and rack transmission structure. At the adjacent end faces of the cover plate 141 and the gear 420, a plurality of slots 430 are distributed circumferentially along the rotating rod 410. The rotating rod 410 is close to the cover plate 141. The end of 1 expands outward to form a rotating rod flange 440. A locking block 450 is provided on the rotating rod flange 440 to cooperate with the locking groove 430. The locking block 450 can be embedded in the locking groove 430 to achieve circumferential limiting. A spring 460 is sleeved on the rotating rod 410. The spring 460 is located at the lower end of the gear 420. Its elastic force can tightly press the locking block 450 into the locking groove 430 to achieve circumferential locking of the rotating rod 410 and prevent it from rotating without human intervention.

[0032] The upper end of the rotating rod 410 extends upward from the cover plate 141. A handwheel 180 is provided at the end of the rotating rod 410 extending from the cover plate 141. The handwheel 180 provides a force point for the operator, enabling vertical pressing and circumferential rotation of the rotating rod 410, making operation convenient.

[0033] A guide rod 250 is slidably disposed in the mounting cavity 210. The end of the guide rod 250 extends out of the mounting cavity 210 and is connected to the U-shaped connecting frame 160, providing guidance and limiting for the sliding of the U-shaped connecting frame 160 and preventing swaying or jamming during the sliding process. A reinforcing rod 260 is also provided in the middle of the U-shaped connecting frame 160. A blind hole 270 is provided on the side wall of the mounting cavity 210. The blind hole 270 and the reinforcing rod 260 are clearance-fitted. The end of the reinforcing rod 260 extends into the blind hole 270, further strengthening the connection structure between the U-shaped connecting frame 160 and the mounting base 140.

[0034] The clamping plate 150 includes a connecting part 710, which is bolted to the mounting base 140 to facilitate the disassembly and replacement of the clamping plate 150. The lower end of the connecting part 710 extends downward to form a first limiting part 720, which is used to limit the horizontal movement of the battery and restrict its horizontal movement. The clamping plate 150 also includes a second limiting part 730, which is perpendicular to the first limiting part 720 and is used to limit the vertical movement of the battery to prevent it from moving upward during bumps, thus achieving both horizontal and vertical limiting of the battery.

[0035] A rubber pad 740 is provided on the card plate 150. The rubber pad 740 covers the contact surface between the first limiting part 720 and the second limiting part 730 and the battery, so as to achieve flexible contact. The mounting frame 110 and the bottom shell 120 are connected by bolts to realize the detachable assembly of the two, which facilitates the internal maintenance of the battery storage compartment 130 and the disassembly and assembly of the battery.

[0036] In use, the operator places the battery inside the battery storage compartment 130, initially positioning the battery in the center of the compartment. The operator then manually pushes the two mounting seats 140 on either side of the mounting frame 110 to slide in a straight line towards each other. Simultaneously, the mounting seats 140 drive the U-shaped connecting frame 160 to slide against the outer wall of the mounting frame 110. The guide rod 250 slides synchronously with the U-shaped connecting frame 160, providing guidance and preventing the U-shaped connecting frame 160 from swaying. The two mounting seats 140 are continuously slid until the two retaining plates 150 are firmly against the outer walls of the battery on both sides. At this point, the battery is precisely positioned in the center of the battery storage compartment 130, completing the battery's position adjustment.

[0037] After the position adjustment is completed, the operator presses down on the handwheel 180, causing the rotating rod 410 to move vertically downward along the mounting cavity 210. At the same time, the spring 460 at the lower end of the gear 420 is compressed, and the locking block 450 on the flange 440 of the rotating rod moves down with the rotating rod 410, disengaging from the slot 430 of the cover plate 141, thus releasing the circumferential locking of the rotating rod 410. While maintaining the pressed state of the handwheel 180, the operator rotates the handwheel 180, driving the rotating rod 410 to rotate around its own axis. The rotating rod 410 drives the gear 420 to rotate synchronously. The gear 420 meshes with the tooth groove 240 on the connecting rod 220, causing the connecting rod 220 to move horizontally along the mounting cavity 210. The connecting rod 220 pushes the U-shaped connecting frame 160 closer to the mounting frame 110 until the locking teeth 230 on the inner side of the U-shaped connecting frame 160 engage with the mounting frame. The rack 170 on 110 is fully engaged; when the handwheel 180 is released, the spring 460 elastically resets after losing its pressing force, pushing the gear 420 and the rotating rod 410 vertically upward. The locking block 450 on the flange 440 of the rotating rod re-engages into the slot 430 of the cover plate 141, restoring the circumferential locking of the rotating rod 410, locking the meshing position of the gear 420 and the tooth groove 240, so that the locking tooth 230 and the rack 170 maintain a stable meshing state, completing the locking and positioning of the mounting base 140. At this time, the clamping plate 150 forms a continuous and stable clamping of the battery; the first limiting part 720 of the clamping plate 150 restricts the horizontal displacement of the battery, the second limiting part 730 restricts the vertical displacement of the battery, and the rubber gasket 740 realizes the flexible contact between the clamping plate 150 and the battery, buffering the clamping force.

[0038] The guide rod 250 provides sliding guidance for the U-shaped connecting frame 160 while strengthening the connection between the mounting base 140 and the U-shaped connecting frame 160, and enhancing the fit between the rod 260 and the blind hole 270 of the mounting cavity, further improving the structural rigidity of the U-shaped connecting frame 160. The synergistic effect of the two enhances the overall structural strength of the mounting frame 110, improves the deformation resistance of the frame, and prevents the frame from deforming when subjected to external impact. The enclosed battery storage compartment 130 formed by the mounting frame 110 and the bottom shell 120 provides an independent storage space for the battery. The deformation-resistant frame structure can effectively prevent the battery from being squeezed or bumped by the frame deformation, thus achieving effective protection for the battery. At the same time, the rubber gasket 740 can also absorb the slight vibration during vehicle operation, reducing the wear and tear on the battery components caused by vibration.

[0039] In existing technologies, the battery compartments of electric motorcycles are mostly of fixed dimensions. However, due to the differentiated configurations of high-end and low-end electric motorcycles, the compatible lithium battery sizes vary. Small-sized lithium batteries cannot be reliably secured during assembly and are difficult to install centrally within the battery compartment, causing the vehicle's center of gravity to deviate from its central position, severely affecting the vehicle's driving stability. Furthermore, traditional frames lack structural strength and have poor deformation resistance, making them susceptible to damage to the internal battery due to collision deformation. The lightweight, deformation-resistant sheet metal frame structure for electric motorcycles in this embodiment, through the aforementioned technical solution, achieves the following beneficial effects:

[0040] 1. The lightweight, deformation-resistant sheet metal frame structure of the electric motorcycle in this embodiment is provided with two mounting seats 140 that can slide along the mounting frame 110. The distance between the two mounting seats 140 can be flexibly adjusted according to the specifications and size of the battery, so that the frame can be adapted to batteries of different specifications. This breaks the limitation of traditional fixed-size battery compartments that can only adapt to a single specification of battery, solves the technical problem that small-size batteries cannot be reliably fixed, and improves the versatility and adaptability of the frame.

[0041] 2. The lightweight, deformation-resistant electric motorcycle sheet metal frame structure in this embodiment enables the battery to be installed in the center, ensuring the vehicle's driving stability. The two mounting seats 140 can precisely limit batteries of different specifications to the center position of the battery placement compartment 130 through opposite sliding, ensuring that the overall center of gravity of the motorcycle is always located in the center of the vehicle. This solves the problem of vehicle center of gravity shift caused by battery installation misalignment in the prior art, effectively improving the vehicle's driving stability and handling, and reducing the safety risks of rollover and deviation during vehicle operation.

[0042] 3. In the lightweight, deformation-resistant electric motorcycle sheet metal frame structure of this embodiment, the locking mechanism adopts a double locking design with the engagement of the locking teeth 230 and the rack 170, and the engagement of the locking block 450 and the slot 430. The engagement of the locking teeth 230 and the rack 170 achieves the initial locking of the mounting seat 140. The engagement of the locking block 450 and the slot 430, combined with the elastic force of the spring 460, can effectively prevent the rotating rod 410 from rotating due to the bumps of the vehicle, and prevent the locking teeth 230 and the rack 170 from disengaging. This achieves the anti-loosening effect of the locking structure, ensuring that the battery can maintain a stable fixed state throughout the entire driving cycle of the vehicle, without any movement or deviation.

[0043] 4. The lightweight, deformation-resistant sheet metal frame structure of the electric motorcycle in this embodiment strengthens the connection between the U-shaped connecting frame 160, the mounting base 140, and the mounting frame 110 through the structural design of the guide rod 250 and the reinforcing rod 260. This enhances the overall structural strength and deformation resistance of the mounting frame 110 and even the entire frame body 100, preventing deformation of the frame when subjected to external impact. At the same time, the deformation-resistant frame structure, combined with the enclosed battery compartment 130, effectively prevents the battery from being squeezed or damaged by the frame deformation, achieving effective protection of the battery and extending its service life.

[0044] The bidirectional limiting structure formed by the first limiting part 720 and the second limiting part 730 of the clamping plate 150 restricts the displacement of the battery in both horizontal and vertical directions, preventing the battery from shaking due to bumps; the rubber pad 740 enables flexible contact between the clamping plate 150 and the battery, which not only buffers the clamping force of the clamping plate 150 on the battery and prevents hard contact damage to the battery casing, but also absorbs slight vibrations during vehicle operation, reducing mechanical wear of the internal components of the battery caused by vibration.

[0045] The mounting frame 110 and the base shell 120, as well as the clamping plate 150 and the mounting base 140, are all connected by bolts, which enables the disassembly and assembly of each component. This not only facilitates the installation and replacement of the battery, but also enables the internal cleaning and maintenance of the battery storage compartment 130. It also facilitates the individual replacement and maintenance of each component of the frame, reducing the maintenance cost of the frame.

[0046] In summary, the above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the present invention.

Claims

1. A lightweight, deformation-resistant sheet metal frame structure for an electric motorcycle, characterized in that: The vehicle includes a frame body (100), which includes a square mounting frame (110). The lower end of the mounting frame (110) is provided with a bottom shell (120). The mounting frame (110) and the bottom shell (120) together form a battery storage compartment (130) for placing a battery. The mounting frame (110) is provided with a fixing device for fixing the battery. The fixing device includes two mounting seats (140). The two mounting seats (140) are arranged opposite to each other and can slide on the mounting frame (110). Each of the two mounting seats (140) has a locking plate (150) on its adjacent end face. The locking plate (150) is used to abut against the battery. The fixing device also includes a locking mechanism for locking the mounting seats (140).

2. The lightweight, deformation-resistant sheet metal frame structure for an electric motorcycle according to claim 1, characterized in that: The mounting base (140) is provided with a mounting cavity (210), and the upper end of the mounting cavity (210) is provided with a cover plate (141) for sealing the mounting cavity (210); a connecting rod (220) is slidably provided in the mounting cavity (210), one end of the connecting rod (220) extends out of the mounting cavity (210), and the end of the connecting rod (220) extending out of the mounting cavity (210) is provided with a U-shaped connecting bracket (160) that is clearance-fitted with the mounting frame (110).

3. The lightweight, deformation-resistant sheet metal frame structure for an electric motorcycle according to claim 2, characterized in that: A rack (170) is provided on the opposite side of the mounting frame (110) and the U-shaped connecting frame (160). The locking mechanism includes a locking tooth (230) provided in the U-shaped connecting frame (160). A pushing mechanism is provided in the mounting cavity (210) for pushing the locking block (450) to engage with the rack (170) to lock the mounting seat (140).

4. The lightweight, deformation-resistant sheet metal frame structure for an electric motorcycle according to claim 2, characterized in that: The pushing mechanism includes a rotating rod (410) rotatably disposed in the middle of the mounting cavity (210), a gear (420) is provided at the rotating rod (410), and a tooth groove (240) meshing with the gear (420) is provided at the connecting rod (220); a slot (430) distributed circumferentially along the rotating rod (410) is provided at the adjacent end face of the cover plate (141) and the gear (420); the end of the rotating rod (410) near the cover plate (141) expands outward to form a rotating rod flange (440); a locking block (450) that cooperates with the slot (430) is provided at the rotating rod flange (440); a spring (460) located at the lower end of the gear (420) is sleeved on the rotating rod (410), and the spring (460) is used to push the locking block (450) into the slot (430) to lock the rotating rod (410).

5. The lightweight, deformation-resistant sheet metal frame structure for an electric motorcycle according to claim 4, characterized in that: The upper end of the rotating rod (410) extends out of the cover plate (141), and a handwheel (180) is provided at the end of the rotating rod (410) extending out of the cover plate (141).

6. The lightweight, deformation-resistant sheet metal frame structure for an electric motorcycle according to claim 2, characterized in that: A guide rod (250) is slidably provided in the mounting cavity (210). The end of the guide rod (250) extends out of the mounting cavity (210) and is connected to the U-shaped connecting frame (160).

7. The lightweight, deformation-resistant sheet metal frame structure for an electric motorcycle according to claim 2, characterized in that: The U-shaped connecting bracket (160) has a reinforcing rod (260) in the middle, and a blind hole (270) in the mounting cavity (210) is provided to fit the reinforcing rod (260) with clearance. The end of the reinforcing rod (260) extends into the blind hole (270) in the mounting cavity.

8. The lightweight, deformation-resistant sheet metal frame structure for an electric motorcycle according to claim 1, characterized in that: The plate (150) includes a connecting part (710) that is bolted to the mounting base (140). The lower end of the connecting part (710) extends downward to form a first limiting part (720) for limiting the horizontal direction of the battery. The plate (150) also includes a second limiting part (730) perpendicular to the first limiting part (720) for limiting the vertical direction of the battery.

9. The lightweight, deformation-resistant sheet metal frame structure for an electric motorcycle according to claim 8, characterized in that: A rubber pad (740) is provided at the plate (150) covering the first limiting part (720) and the second limiting part (730).

10. The lightweight, deformation-resistant sheet metal frame structure for an electric motorcycle according to claim 1, characterized in that: The mounting frame (110) is bolted to the bottom shell (120).

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