Electric vehicle frame

Abstract

The utility model discloses an electric vehicle frame, which solves the problem that the existing electric vehicle frame is heavier on the basis of ensuring the strength, and adopts the technical scheme that the electric vehicle frame comprises two main beams which are arranged in parallel, and a plurality of cross beams are arranged between the two main beams; two ends of the cross beam are respectively and fixedly connected with the two main beams, a mounting structure is arranged between the middle positions of the two main beams in the length direction, and a storage battery mounting cavity is formed in the mounting structure, and is characterized in that the two end sides of the two main beams in the length direction are respectively connected through a connecting structure; a supporting beam is arranged between the two connecting structures, the two ends of the supporting beam are connected with the two connecting structures respectively, and a pressing connection structure is arranged on the supporting beam and used for conducting pressing connection on the storage battery in the storage battery installation cavity.

Description

Technical Field

[0001] The utility model relates to an electric vehicle, in particular to a bracket which plays a main supporting role on the electric vehicle. Background Art

[0002] The structure of an electric vehicle includes a frame. As the main supporting structure of the power vehicle, the frame plays a decisive role in the overall strength of the electric vehicle. The frame is made of iron components welded and fixed. The frame has two main beams arranged side by side, and a number of crossbeams connecting the two main beams are provided between the two main beams. Usually, a battery mounting structure is provided on the lower side of the lower end of the main beam, and the battery that provides power for the driving of the electric vehicle is set in the mounting structure. The front end of the main beam is tilted upward to accommodate the installation of the handlebar, and the rear side of the main beam is set horizontally to accommodate the connection of the rear fork of the electric vehicle, and to form a pedal part in the middle position. The strength of this frame mainly depends on the strength of the main beam itself. Therefore, the material thickness of the main beam appears to be relatively thick, which will significantly increase the weight of the frame and make the overall weight of the vehicle body heavier.

[0003] Chinese patent document (publication number: CN 219927890U) discloses an electric vehicle frame and an electric vehicle having the frame, relating to the technical field of electric vehicle frames, and aims to solve the problem that the existing frames have poor versatility. Users need to purchase additional electric vehicles when they need to carry or expand the storage space, which is expensive and wastes resources. The device includes a frame body, two shock-absorbing mounting brackets, a connecting beam and a rear clothes rack. The two shock-absorbing mounting brackets are symmetrically arranged and fixedly mounted on two groups of upper side tubes of the frame body, and are both provided with a first mounting structure and a second mounting structure; the connecting beam is located between the two shock-absorbing mounting brackets and is respectively connected to the two shock-absorbing mounting brackets, and a third mounting structure is provided on the connecting beam; the rear clothes rack includes a first rear clothes rack or a second rear clothes rack, the first rear clothes rack is connected to the first mounting structure and the third mounting structure, and the second rear clothes rack is connected to the first mounting structure and the second mounting structure. The utility model can configure the rear clothes rack of the frame according to usage needs, reducing the economic burden of users and saving resources.

[0004] This type of frame uses a double frame arrangement at the pedal position to increase the frame strength and provide a relatively secure mounting structure for the battery. However, this type of frame is relatively heavy and inconvenient to manufacture. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide an electric vehicle frame which can effectively reduce the overall weight of the frame while ensuring strength, and the battery has good installation stability on the frame.

[0006] In order to solve the technical problem, the technical solution of the utility model is: an electric vehicle frame, comprising two main beams arranged in parallel, a plurality of cross beams are provided between the two main beams, the two ends of the cross beams are respectively fixedly connected to the two main beams, and a mounting structure is provided between the middle positions of the two main beams in the length direction, and a battery mounting cavity is formed in the mounting structure. It is characterized in that the two end sides of the two main beams in the length direction are respectively connected together by connecting structures, a support beam is provided between the two connecting structures, the two ends of the support beam are respectively connected together, and a crimping structure is provided on the support beam, which is used to crimp the battery in the battery mounting cavity.

[0007] Both main beams run the length of the electric vehicle and primarily determine the overall strength of the frame. The connecting structure can be a tapping tube or a crossbar, with each end of the support beam connected to the corresponding connecting structure. The support beams serve to counteract bending deformation of the main beams. After the battery is installed in the battery compartment, the crimping structure on the installed support beams presses against the battery.

[0008] Furthermore, at least one end of the support beam is detachably connected to the corresponding coupling structure, thereby facilitating the disassembly of the support beam and the coupling structure and making it easier to replace the battery.

[0009] Furthermore, one end of the support beam is detachably connected to the corresponding coupling structure, and the other end is hinged to the corresponding coupling structure, which facilitates the disconnection between the crimping structure on the support beam and the battery, thereby providing convenience for battery replacement.

[0010] Furthermore, a ferrule is welded and fixed at the other end of the support beam, and the ferrule is rotatably sleeved on the corresponding connecting structure. The structure of the ferrule and the connecting structure are hinged to each other, which has a simple structure and is convenient for connecting the support beam.

[0011] Furthermore, an elastic sleeve is embedded in the ferrule, and the elastic sleeve is sleeved on the corresponding connection structure. The presence of the elastic sleeve enables the support beam to be stably pressed against the battery.

[0012] Furthermore, the two main beams have a downwardly curved protrusion at the middle of their length, and the bottom of the mounting structure extends into the bottom of the curved protrusion. The support beam is positioned higher than the bottom of the curved protrusion. This curved protrusion can well adapt to the location of the battery mounting cavity, forming a secure mounting structure for receiving the battery.

[0013] Further, two sets of batteries are installed in the battery installation cavity, and there is a gap between the two sets of batteries. The support beam is used to be embedded in this gap. This well adapts to the crimping and fixing of the batteries by the crimping structure on the support beam, and the support beam is not likely to damage the batteries.

[0014] Further, the crimping structure includes a pressure rod, and the pressure rod is fixed on the support beam, and the outer end of the pressure rod extends towards the radial outside of the support beam. The crimping of the battery is achieved through the pressure rod, and the crimping size is large, which can provide a stable crimping effect for the battery.

[0015] Further, the pressure rod is fixedly connected to the mounting seat. The mounting seat is in a "冂" shape, and the mounting seat is snap-fitted and fixed on the support beam. The fixed connection between the pressure rod and the support beam is achieved through the mounting seat, and the connection firmness is good.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows: A support beam is provided between the two main beams. The support beam can counteract the deformation of the main beams during driving, so that the overall strength of the vehicle frame is guaranteed, and thus the wall thickness of the main beams can be reduced, effectively reducing the weight of the vehicle frame. By providing a crimping structure on the support beam, after the support beam is assembled in place, the crimping structure is crimped onto the battery, so that the position stability of the battery in the battery installation cavity is good, and the stability of the electrical connection between the batteries can be effectively guaranteed. Also, due to the crimping of the battery by the support beam through the crimping structure, the anti-theft performance of the battery can be effectively improved. Description of the Drawings

[0017] Figure 1 is a reference diagram of the usage state of the electric vehicle frame.

[0018] Figure 2 is Figure 1 an exploded view of a part of the structure.

[0019] Figure 3 is a structural diagram of the electric vehicle frame after being assembled with batteries.

[0020] In the figure, 1, cross beam; 2, pressure rod; 3, battery; 4, support beam; 5 main beam; <51>, arc protrusion. 6, gap; 7, connecting bolt; 8, mounting seat; 9, elastic sleeve. Specific Embodiments

[0021] Combined with the drawings in the specification, the electric vehicle frame is generally made of iron and is formed by welding and fixing several components. As the strength foundation of the electric vehicle, some other components on the electric vehicle are installed on the vehicle frame and supported by the vehicle frame.

[0022] The largest components of this vehicle frame are two parallel main beams 5, extending along the length of the electric vehicle. Between the two main beams 5 are several crossbeams 1, extending across the width of the vehicle. The ends of the crossbeams 1 are welded to the two main beams 5. The battery 3 that powers the vehicle is mounted midway between the main beams 5. Therefore, a mounting structure is located between the two main beams 5. This mounting structure is constructed from cross-shaped iron strips welded together, and can also be a box-shaped structure. Within this mounting structure is a battery mounting cavity, housing the battery 3. The two main beams 5 are connected at their respective ends by connecting structures. These connecting structures are typically located not at the ends of the main beams 5, but rather inwardly. These ends are used to connect and secure the handlebars and rear fork of the vehicle. These connecting structures are typically located on the crossbeams 1, bridging the two main beams 5 at corresponding locations.

[0023] The main beam 5 is typically curved. To increase its bending strength, a support beam 4 is provided between the two connecting structures. The support beam 4 extends along the length of the electric vehicle, with its ends connected to the two connecting structures. The support beam 4 also allows for crimping of the battery 3. The support beam 4 is provided with a crimping structure that typically protrudes outward from the support beam 4. Once the battery 3 and support beam 4 are installed, the crimping structure is directly crimped onto the battery 3. The figure shows two groups of batteries 3 within the battery mounting cavity. The two groups of batteries 3 are separated by a gap 6 across the width of the electric vehicle. Once the support beam 4 is installed, it is embedded within this gap 6, separating the two groups of batteries 3.

[0024] At least one end of the support beam 4 is detachably connected to the corresponding connecting structure, and this detachable connecting structure is usually a connecting bolt 7. One end of the support beam 4 can be pressed into a flat head, and the connecting bolt 7 passes through the flat head and the crossbeam 1 provided at the rear side of the frame to achieve a detachable connection between one end of the support beam 4 and the crossbeam 1. The figure shows that one end of the support beam 4 is detachably connected to the corresponding connecting structure, and this end of the support beam 4 is the rear end, while the front end of the support beam 4 is hinged to the corresponding crossbeam 1. A ferrule is welded and fixed at the front end of the support beam 4, and the ferrule is rotatably connected to the hinge provided on the corresponding crossbeam 1. In order to improve stability, an elastic sleeve 9 is embedded in the ferrule, and the ferrule with the elastic sleeve 9 is connected to the hinge.

[0025] At the middle position in the length direction of the two main beams 5, there is a downward arc protrusion 51. As shown in the figure, the size of this arc protrusion 51 is relatively large, making the overall main beam 5 approximately C-shaped. Combined with the setting of the support beam 4, two triangular stable support structures are formed at the bottom of the vehicle frame, resulting in good overall stability of the vehicle frame. The bottom end of the installation structure corresponds to the bottom end of the arc protrusion 51, and the bottom side of the installation structure can be welded and fixed to the arc protrusion 51, while the position of the support beam 4 is higher than the bottom end position of the arc protrusion 51. Figure 3 As shown, the two main beams 5 can be formed by bending a tubular body at multiple places.

[0026] The crimping structure includes a pressure bar 2. The middle position of the pressure bar 2 is fixed on the support beam 4. The two outer ends of the pressure bar 2 extend radially outward from the support beam 4, and the pressure bar 2 extends into the position of the battery 3. The pressure bar 2 is a trough-shaped structure, and the bottom surface of the pressure bar 2 is crimped on the upper surface of the battery 3. Sometimes, in order to improve the protection effect, a buffer pad is also bonded to the bottom surface of the pressure bar 2. Through the fit of the buffer pad and the upper surface of the battery 3, a certain protection effect is provided for the battery 3. To improve the connection firmness between the pressure bar 2 and the support beam 4, the pressure bar 2 is fixedly connected to the mounting seat 8 by welding. The mounting seat 8 is in a 冂 shape, the length of the mounting seat 8 is greater than the width of the pressure bar 2, the mounting seat 8 is buckled on the support beam 4, and the mounting seat 8 is fixedly connected to the support beam 4 by welding.

Claims

1. An electric vehicle frame, comprising two main beams arranged in parallel, a plurality of cross beams provided between the two main beams, the ends of the cross beams being fixedly connected to the two main beams, a mounting structure being provided between the middle positions of the two main beams in the longitudinal direction, a battery mounting cavity being formed in the mounting structure, characterized in that: Both ends of the two main beams in the length direction are respectively connected together through a connecting structure. A support beam is provided between the two connecting structures. Both ends of the support beam are respectively connected to the two connecting structures. A crimping structure is provided on the support beam, and the crimping structure is used to crimp the battery in the battery installation cavity.

2. The electric vehicle frame according to claim 1, characterized in that: At least one end of the support beam is detachably connected to the corresponding connecting structure.

3. The electric vehicle frame according to claim 2, characterized in that: One end of the support beam is detachably connected to the corresponding connecting structure, and the other end is hinged to the corresponding connecting structure.

4. The electric vehicle frame according to claim 3, characterized in that: A ferrule is fixedly welded at the other end of the support beam, and the ferrule is rotatably sleeved on the corresponding connecting structure.

5. The electric vehicle frame according to claim 4, characterized in that: An elastic sleeve is embedded in the ferrule, and the elastic sleeve is sleeved on the corresponding connecting structure.

6. The electric vehicle frame according to any one of claims 1 to 4, characterized in that: The middle positions of the two main beams in the length direction protrude downward in an arc shape. The bottom of the installation structure extends to the bottom position of the arc-shaped protrusion. The position of the support beam is higher than the bottom position of the arc-shaped protrusion.

7. The electric vehicle frame according to any one of claims 1 to 4, characterized in that: Two groups of batteries are installed in the battery installation cavity, and there is a gap between the two groups of batteries. The support beam is used to be embedded in this gap.

8. The electric vehicle frame according to claim 7, characterized in that: The crimping structure includes a pressure rod. The pressure rod is fixed on the support beam, and the outer end of the pressure rod extends radially outward of the support beam.

9. The electric vehicle frame according to claim 8, characterized in that: The pressure rod is fixedly connected to the mounting seat. The mounting seat is in an inverted U shape, and the mounting seat is snap-fitted and fixed on the support beam.

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