Electric vehicle chassis with protective structure

Abstract

The utility model relates to electric motor car chassis technical field, specifically disclose electric motor car chassis with protection structure, including chassis body, its lower surface fixedly connected with the installation baffle, the lower extreme of installation baffle is provided with replaceable protection board, both ends surfaces of replaceable protection board all are set up with the positioning opening, the lower surface fixedly connected with the positioning plug of installation baffle, the side surface of positioning plug is set up with linkage slot, the transmission disc of embedded type installation is arranged in the lower surface of positioning plug, the bottom surface of linkage slot is provided with transmission gear, both ends of linkage slot all are provided with locking plug. This electric motor car chassis with protection structure, this electric motor car chassis with protection structure through the combination design of replaceable protection board and installation baffle, effectively avoid the chassis body direct scraping with ground, reduce the coating wear and tear and the rust risk, prolong the overall service life of chassis.

Description

Technical Field

[0001] This utility model relates to the field of electric vehicle chassis technology, specifically to an electric vehicle chassis with a protective structure. Background Technology

[0002] The electric vehicle chassis is a crucial component of an electric vehicle, providing a stable basic structure and playing a key role in the vehicle's safety, comfort, and handling. The battery pack, typically mounted under the chassis, is usually a flat, rectangular block protected by an aluminum alloy casing. Its function is to store and release energy, providing power to the vehicle while lowering the center of gravity and improving stability. The motor, generally mounted at the front or rear of the chassis and connected to the wheels, is commonly cylindrical or square in shape. The motor converts the battery's electrical energy into power, propelling the vehicle forward. Some electric vehicles are equipped with multiple motors to achieve four-wheel drive. The chassis frame, constructed from crossbeams and longitudinal beams, is mostly made of steel or high-strength aluminum alloy, supporting the body and various components to form the overall vehicle shape. Electric vehicle chassis layouts are flexible; lacking components like an engine, they can be redesigned to optimize space.

[0003] Existing electric vehicle chassis are easily scratched on roads with poor conditions, leading to wear and tear on the chassis coating. Over time, this can cause the chassis to rust, affecting the lifespan of the electric vehicle. Typical protective structures use bolts to fix the protective plates to the chassis, but there are many bolts used for fixing, and the protective plates need to be replaced very frequently, making the installation and removal of bolts time-consuming and laborious, reducing maintenance efficiency. Utility Model Content

[0004] The purpose of this utility model is to provide an electric vehicle chassis with a protective structure to solve the problem mentioned in the background art, which is that there are many bolts used for fixing and the protective plate is replaced very frequently, resulting in time-consuming and laborious installation and removal of bolts, which reduces maintenance efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an electric vehicle chassis with a protective structure, including a chassis body, a mounting baffle fixedly connected to its lower surface, a replaceable protective plate provided at the lower end of the mounting baffle, positioning openings provided on both ends of the replaceable protective plate, a positioning block fixedly connected to the lower surface of the mounting baffle, a linkage slot provided on the side surface of the positioning block, a transmission disc embedded in the lower surface of the positioning block, a transmission gear provided on the bottom surface of the linkage slot, locking blocks provided at both ends of the linkage slot, a support rod fixedly connected to the side surface of the locking block, and a linkage tooth block fixedly connected to the surface of the support rod.

[0006] Preferably, the thickness of the two ends of the replaceable protective plate is less than the thickness of the middle part, and the lower surfaces of the two ends of the replaceable protective plate are inclined, and the positioning opening is cylindrical.

[0007] Using the above technical solution, the replaceable protective plate is thin at both ends and has an inclined lower surface, which reduces the probability of scratching the ground protrusions during driving and reduces the risk of damage. The cylindrical positioning opening and the positioning plug are precisely matched to ensure that the replaceable protective plate can be quickly aligned with the installation position and improve assembly efficiency.

[0008] Preferably, the positioning block is cylindrical, and the positioning block is correspondingly set with the positioning opening, and the positioning block and the positioning opening form a snap-fit ​​connection, and the linkage slot penetrates through the side surface of the positioning block.

[0009] Using the above technical solution, the positioning insert and the positioning opening are engaged and connected, which can initially fix the protective plate without bolts, simplifying the installation and disassembly steps. The linkage slot runs through the side of the positioning insert, providing installation and movement space for the internal transmission components and ensuring smooth operation of the locking / unlocking mechanism.

[0010] Preferably, the transmission disc and the positioning block are rotatably connected, and the surface of the transmission disc is provided with a slot, and the shaft of the transmission disc passes through the surface of the positioning block and the linkage slot.

[0011] Using the above technical solution, the transmission disc and the positioning block are rotatably connected. The subsequent locking structure can be driven by rotation, which is convenient and labor-saving. The surface slot design makes it easy to rotate the disc with tools, adapting to the operational needs of different scenarios and improving practicality.

[0012] Preferably, the transmission gear and the linkage slot are rotatably connected, and the shaft of the transmission gear is fixedly connected to the shaft of the transmission disc. The two support rods are symmetrically arranged, and the linkage tooth block and the transmission gear are meshed.

[0013] Using the above technical solution, the transmission gear and the transmission disc are coaxially fixed to achieve synchronous power transmission. Rotating the disc can drive the gear to move together, resulting in efficient transmission. The two support rods are symmetrically arranged and mesh with the gear in conjunction with the linkage tooth block to ensure that the locking blocks on both sides extend and retract synchronously, thus ensuring a stable and balanced locking mechanism.

[0014] Preferably, the side surface of the locking block is provided with an auxiliary slot, the inner wall of the positioning opening is provided with two locking grooves, and the bottom surface of the linkage slot is fixedly connected with two limiting blocks.

[0015] By adopting the above technical solution, the auxiliary slot provides movement space for the support link, avoids mutual interference between components during operation, ensures flexible operation of the transmission structure, and the setting of locking groove and limit block provides precise engagement position and sliding guide for locking block, thereby improving the connection accuracy of the structure.

[0016] Preferably, the auxiliary slot is correspondingly provided with the support connecting rod, the locking groove is correspondingly provided with the locking block, and the locking groove and the locking block are engaged, the limiting block and the locking block are slidably connected, and a spring is connected between the limiting block and the locking block.

[0017] The above technical solution is adopted, in which the locking plug and the locking groove are engaged to enhance the connection between the replaceable protective plate and the mounting baffle, and prevent loosening during driving. The limit block and the locking plug are slidably connected and equipped with a spring, so that the spring force can automatically reset when unlocking, simplifying the disassembly operation and improving maintenance efficiency.

[0018] Compared with the prior art, the beneficial effects of this utility model are: the electric vehicle chassis with a protective structure:

[0019] 1. This electric vehicle chassis with a protective structure effectively prevents the chassis body from directly scraping against the ground through a combination design of replaceable protective plates and mounting baffles, reducing coating wear and rust risk, and extending the overall service life of the chassis;

[0020] 2. The replaceable protection plate adopts a modular design, which can be quickly replaced without disassembling a large number of bolts, greatly reducing maintenance time and labor costs and improving maintenance efficiency. The locking block and locking groove interlocking structure, combined with the spring reset design, not only ensures the firmness of the protection plate after installation, but also simplifies the disassembly operation, taking into account both driving safety and maintenance convenience. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the connection between the chassis body and the mounting baffle of this utility model;

[0022] Figure 2 This is a three-dimensional structural diagram of the connection between the mounting baffle and the positioning block of this utility model;

[0023] Figure 3 This is a three-dimensional structural diagram of the connection between the positioning opening and the positioning insert of this utility model;

[0024] Figure 4 This is a three-dimensional structural diagram of the connection between the positioning plug and the transmission disc of this utility model;

[0025] Figure 5 This is a three-dimensional structural diagram of the connection between the transmission disc and the transmission gear of this utility model;

[0026] Figure 6 This is a three-dimensional structural diagram of the connection between the locking insert and the limiting block of this utility model.

[0027] In the diagram: 1. Chassis body; 2. Mounting baffle; 3. Replaceable protective plate; 4. Positioning opening; 5. Positioning insert; 6. Linkage slot; 7. Transmission disc; 8. Transmission gear; 9. Locking insert; 10. Support link; 11. Linkage gear block; 12. Auxiliary slot; 13. Locking groove; 14. Limiting block. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1-6 This utility model provides a technical solution: an electric vehicle chassis with a protective structure, including a chassis body 1, a mounting baffle 2, a replaceable protective plate 3, a positioning opening 4, a positioning block 5, a linkage slot 6, a transmission disc 7, a transmission gear 8, a locking block 9, a support link 10, a linkage tooth block 11, an auxiliary slot 12, a locking groove 13, and a limiting block 14. The chassis body 1 has a mounting baffle 2 fixedly connected to its lower surface. The thickness of the two ends of the replaceable protective plate 3 is less than the thickness of its middle part, and the lower surfaces of the two ends of the replaceable protective plate 3 are designed to be inclined. The positioning opening 4 is a cylindrical design. The replaceable protective plate 3 is aligned with the positioning block 5 below the mounting baffle 2 through the positioning opening 4, so that the positioning block 5 and the positioning opening 4 are engaged and connected, completing the initial position fixation of the replaceable protective plate 3, and preparing for subsequent locking.

[0030] A replaceable protective plate 3 is provided at the lower end of the mounting baffle 2. Both ends of the replaceable protective plate 3 are provided with positioning openings 4. A positioning block 5 is fixedly connected to the lower surface of the mounting baffle 2. The positioning block 5 is cylindrical and is positioned corresponding to the positioning opening 4. The positioning block 5 and the positioning opening 4 form a snap-fit ​​connection. The linkage slot 6 penetrates the side surface of the positioning block 5. The transmission disc 7 is rotatably connected to the positioning block 5. The surface of the transmission disc 7 is provided with a slot. The rotating shaft of the transmission disc 7 penetrates the surfaces of the positioning block 5 and the linkage slot 6. When a tool is inserted into the slot on the surface of the transmission disc 7 and rotated, the transmission disc 7 drives the coaxially fixed transmission gear 8 to rotate synchronously in the linkage slot 6, transmitting the rotational power to the subsequent transmission structure.

[0031] The side surface of the positioning insert 5 is provided with a linkage slot 6, the lower surface of the positioning insert 5 is embedded with a transmission disc 7, the bottom surface of the linkage slot 6 is provided with a transmission gear 8, both ends of the linkage slot 6 are provided with locking inserts 9, the side surface of the locking insert 9 is fixedly connected with a support rod 10, the transmission gear 8 and the linkage slot 6 are rotatably connected, and the shaft of the transmission gear 8 is fixedly connected with the shaft of the transmission disc 7. The two support rods 10 are symmetrically arranged, and the linkage tooth block 11 and the transmission gear 8 are meshed. The transmission gear 8 and the linkage tooth block 11 on the support rod 10 mesh, driving the two symmetrically arranged support rods 10 to move synchronously, thereby driving the locking insert 9 to slide along the limiting block 14, and finally making the locking insert 9 snap into the locking groove 13 on the inner wall of the positioning opening 4, thus completing the secure locking of the replaceable protective plate 3.

[0032] A linkage toothed block 11 is fixedly connected to the surface of the support rod 10. An auxiliary slot 12 is provided on the side surface of the locking plug 9. Two locking grooves 13 are provided on the inner wall of the positioning opening 4. Two limiting blocks 14 are fixedly connected to the bottom surface of the linkage slot 6. The auxiliary slot 12 is set correspondingly to the support rod 10. The locking grooves 13 are set correspondingly to the locking plug 9. The locking grooves 13 and the locking plug 9 are engaged. The limiting blocks 14 and the locking plug 9 are slidably connected. A spring is connected between the limiting blocks 14 and the locking plug 9. When the transmission disc 7 is rotated in the opposite direction, the transmission gear 8 drives the linkage toothed block 11 and the support rod 10 to move in the opposite direction, so that the locking plug 9 is disengaged from the locking groove 13. At this time, the spring between the limiting blocks 14 and the locking plug 9 releases its elastic force, pushing the locking plug 9 to automatically reset. The replaceable protective plate 3 can then be removed from the positioning plug 5.

[0033] Working principle: When using this electric vehicle chassis with protective structure, the replaceable protective plate 3 is first initially positioned by engaging the positioning plug 5 with the positioning opening 4. Then, the rotating transmission disc 7 drives the transmission gear 8 to rotate, which drives the support connecting rod 10 and the locking plug 9 to move synchronously through the linkage gear block 11, so that the locking plug 9 is engaged in the locking groove 13 to complete the secure locking. When unlocking, the transmission disc 7 is rotated in the opposite direction, the locking plug 9 is disengaged from the locking groove 13, and automatically resets under the action of the spring at the limit block 14. Finally, the replaceable protective plate 3 can be quickly disassembled without the need for a large number of bolts. This effectively ensures the chassis protection effect and maintenance convenience, and increases the overall practicality.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electric vehicle chassis with a protective structure, comprising a chassis body (1), wherein a mounting baffle (2) is fixedly connected to its lower surface, characterized in that: The lower end of the mounting baffle (2) is provided with a replaceable protective plate (3). Both ends of the replaceable protective plate (3) are provided with positioning openings (4). The lower surface of the mounting baffle (2) is fixedly connected with a positioning block (5). The side surface of the positioning block (5) is provided with a linkage slot (6). The lower surface of the positioning block (5) is embedded with a transmission disc (7). The bottom surface of the linkage slot (6) is provided with a transmission gear (8). Both ends of the linkage slot (6) are provided with locking blocks (9). The side surface of the locking block (9) is fixedly connected with a support rod (10). The surface of the support rod (10) is fixedly connected with a linkage tooth block (11).

2. The electric vehicle chassis with a protective structure according to claim 1, characterized in that: The thickness of the two ends of the replaceable protective plate (3) is less than the thickness of the middle part, and the lower surface of the two ends of the replaceable protective plate (3) is inclined. The positioning opening (4) is cylindrical.

3. The electric vehicle chassis with a protective structure according to claim 1, characterized in that: The positioning plug (5) is cylindrical in shape and is correspondingly set with the positioning opening (4). The positioning plug (5) and the positioning opening (4) are engaged. The linkage slot (6) penetrates the side surface of the positioning plug (5).

4. The electric vehicle chassis with a protective structure according to claim 1, characterized in that: The transmission disc (7) and the positioning block (5) are rotatably connected, and the surface of the transmission disc (7) is provided with a slot. The rotating shaft of the transmission disc (7) passes through the surface of the positioning block (5) and the linkage slot (6).

5. The electric vehicle chassis with a protective structure according to claim 1, characterized in that: The transmission gear (8) and the linkage slot (6) are rotatably connected, and the shaft of the transmission gear (8) is fixedly connected to the shaft of the transmission disc (7). The two support rods (10) are symmetrically arranged, and the linkage tooth block (11) and the transmission gear (8) are meshed.

6. The electric vehicle chassis with a protective structure according to claim 1, characterized in that: The side surface of the locking insert (9) is provided with an auxiliary slot (12), the inner wall of the positioning opening (4) is provided with two locking grooves (13), and the bottom surface of the linkage slot (6) is fixedly connected with two limiting blocks (14).

7. The electric vehicle chassis with a protective structure according to claim 6, characterized in that: The auxiliary slot (12) is correspondingly provided with the support connecting rod (10), the locking groove (13) is correspondingly provided with the locking plug (9), and the locking groove (13) and the locking plug (9) form a snap-fit ​​connection. The limiting block (14) and the locking plug (9) form a sliding connection, and a spring is connected between the limiting block (14) and the locking plug (9).

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