A scooter frame

Abstract

The utility model discloses a pedal motorcycle frame, first, the rectangular tube of strengthening is added above pedal pipe, and the main beam adopts double main beam pipe, and the main beam pipe, pedal pipe and connecting pipe adopt the whole structure of integral bending, and pedal pipe is connected with the seat pipe through the connecting pipe, second, the pedal reinforcing plate is added between the rectangular tube and the same side pedal pipe, and the seat support pipe is connected with the seat pipe front end and the connecting pipe respectively to form the stable structure of triangle, and the seat reinforcing plate is connected with the seat support pipe, the connecting pipe and the rectangular tube respectively, and the vice beam is connected with the vertical pipe and pedal frame, thereby making the structure strength of main beam, pedal frame and seat frame and the connecting strength between each other all be obviously enhanced, and the overall structural strength and reliability of pedal motorcycle frame are improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of vehicle frames used in operation and transportation, and specifically relates to a scooter frame. Background Technology

[0002] A scooter is a two-wheeled vehicle characterized by its lightness, comfort, and ease of operation. Its features include a flat and open footboard platform in the middle of the vehicle, allowing the rider to place both feet naturally on the platform for a more relaxed riding posture. Unlike a straddle motorcycle, the footboard platform does not have a high-mounted engine or exhaust pipe on either side, making it easy to get on and off the vehicle and also convenient to support the ground with the feet during frequent starts and stops.

[0003] The scooter frame is the basic structure of a scooter, supporting key components and determining the vehicle's stability, handling, and safety. A traditional scooter frame can be found in Chinese Patent CN112455587B, which discloses a scooter electric vehicle and its frame. In this frame structure, the main beam vertically connecting the riser and footrest is a single-tube structure with few welding points, making it prone to deformation and detachment. The footrest consists of only two symmetrical footrest tubes, resulting in weak structural strength and a weak connection to the main beam and seat frame, making it susceptible to deformation and damage. To avoid the aforementioned problems, various improved scooter frames have emerged on the market. One example is the keel frame, which adds a central longitudinal beam between the main beam and the footrest or seat frame. While this increases the overall structural strength of the frame and footrest, it raises the center of the footrest area, preventing the formation of a flat footrest surface and significantly impacting the scooter's riding comfort and ease of operation. Another example is the double-layer scooter frame and motorcycle disclosed in Chinese patent CN218343665U. This patent describes a frame structure that strengthens the footrest's structural strength by adding round tubes above the footrest tubes. While the connection strength between the main beam and the seat frame is improved, the main beam still uses a single-tube structure, making it prone to deformation and detachment. Furthermore, adding a round tube has limited effect on improving the structural strength of the footpeg frame. Similarly, the motorcycle frame disclosed in Chinese Patent CN103832520B uses a double-beam tube design for the main beam. Although this improves the structural strength of the main beam, the structural strength of the footpeg frame remains weak. Additionally, the front ends of the two seat tubes forming the seat frame extend downwards to connect with the rear end of the footpeg frame, resulting in significant stress at the connection point during riding, increasing the risk of connection failure. Moreover, the long seat frame is prone to deformation. Therefore, further improvements to the scooter frame are necessary to enhance its structural strength and reliability. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of this utility model is to provide a scooter frame that solves the technical problem of poor structural strength of existing scooter frames and achieves the effect of improving the structural strength and reliability of scooter frames.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A scooter frame includes a top tube, a main beam, a footboard frame, and a seat frame. The vertically inclined main beam includes two main beam tubes symmetrically arranged on the left and right. The horizontally inclined footboard frame includes two footboard tubes symmetrically arranged on the left and right. The horizontally inclined seat frame includes two seat tubes symmetrically arranged on the left and right. The upper end of the main beam tube is connected to the top tube, and the lower end is connected to the front end of the footboard tube on the same side. The front end of the seat frame is higher than the footboard frame. A vertically inclined connecting frame is provided between the footboard frame and the seat frame. The connecting frame includes two symmetrically arranged connecting tubes. The lower end of the connecting tube is connected to the rear end of the footboard tube on the same side, and the upper end is connected to the seat tube on the same side. The main beam tube, footboard tube, and connecting tube on the same side are integrally bent into a single structure. Rectangular tubes are respectively provided above the two footboard tubes. The front end of the rectangular tube is connected to the main beam tube on the same side, and the rear end is connected to the connecting tube on the same side.

[0007] Furthermore, a pedal reinforcing plate is connected between the middle of the rectangular tube and the pedal tube on the same side.

[0008] Furthermore, the upper end of the connecting tube is connected to the front position of the seat tube on the same side, and a U-shaped seat support tube with its opening facing the connecting frame is provided at the front of the seat frame. The two ends of the seat support tube are connected to two connecting tubes respectively, and the front end of the seat tube extends to connect with the seat support tube.

[0009] Furthermore, a seat reinforcement plate is provided between the seat support tube and the two connecting tubes. The upper end of the seat reinforcement plate is connected to the seat support tube, and the lower end is connected to the corresponding connecting tube.

[0010] Furthermore, the lower end of the seat reinforcement plate extends downward along the corresponding connecting tube to connect with the rectangular tube on the same side.

[0011] Furthermore, the scooter frame also includes a sub-beam, which is vertically inclined and located behind the main beam. The sub-beam includes two sub-beam tubes arranged symmetrically on the left and right sides. The sub-beam tubes are located close to the main beam tubes on the same side. The upper end of the sub-beam tube is connected to the upright tube, and the lower end is connected to the rectangular tube on the same side.

[0012] Furthermore, an upper reinforcing plate is connected between the upper end of the secondary beam tube and the upper end of the main beam tube on the same side, and a lower reinforcing plate is connected between the lower end of the secondary beam tube and the lower end of the main beam tube on the same side.

[0013] Furthermore, a reinforcing tube is provided laterally near the lower end of the front of the main beam, and the two ends of the reinforcing tube are connected to the two main beam tubes respectively.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. In the scooter frame described in this utility model, for the scooter frame, a horizontal rectangular tube is added above the scooter tubes on both the left and right sides, so that the front and rear ends of the rectangular tube are also connected to the main beam tube and the connecting tube on the same side, so that the force in the middle of the scooter frame is distributed by the scooter tube and the rectangular tube, thereby reducing the possibility of deformation and damage of the scooter tube. In addition, under the condition of a similar cross-section, the rectangular tube has better bending resistance and rigidity than the round tube. Therefore, the use of rectangular tubes in this utility model can provide a better strengthening effect for the structural strength of the scooter frame.

[0016] 2. In the scooter frame described in this utility model, the use of double main beam tubes for the main beam not only improves the structural strength of the main beam itself, but also enhances the connection strength between the main beam, the main beam, and the footboard frame by connecting the upper ends of the two main beam tubes to the upright tube and the lower ends to the footboard tube on the same side. In addition, the main beam tube, footboard tube, and connecting tube on the same side are integrally bent into a single structure, formed by bending a single round tube. The main beam tube, footboard tube, and connecting tube on the same side are no longer connected by welding, which not only simplifies the assembly and production of the scooter frame, but also greatly improves the overall structural strength of the scooter frame.

[0017] 3. In the scooter frame described in this utility model, a connecting frame is added between the pedal frame and the seat frame for the seat frame. A connecting tube that extends backward at an angle and is integrated with the pedal tube is used instead of the pedal tube directly connecting to the seat tube. This not only moves the connection point of the seat frame on the frame backward, which helps to reduce the stress on the connection point during driving and avoid connection failure, but also shortens the length of the independently welded seat frame, ensuring that the seat frame has better structural strength and reducing the possibility of deformation of the seat frame.

[0018] 4. The scooter frame described in this utility model, by adding a reinforcing rectangular tube above the pedal tube, adopting a double main beam tube for the main beam, and the main beam tube, pedal tube, and connecting tube being an integrally bent structure, and the pedal tube being connected to the seat tube through the connecting tube, strengthens the structural strength of the main beam, pedal frame, and seat frame as well as the connection strength between them. This effectively solves the problem of poor structural strength of existing scooter frames and achieves the effect of improving the structural strength and reliability of scooter frames. Attached Figure Description

[0019] Figure 1 This is a perspective view of the scooter frame described in the embodiment;

[0020] Figure 2 This is a front view of the scooter frame described in the embodiment;

[0021] Figure 3 This is a top view of the scooter frame described in the embodiment;

[0022] Figure 4 This is a left view of the scooter frame described in the embodiment;

[0023] Among them, the riser tube 1, main beam tube 2, pedal tube 3, seat tube 4, connecting tube 5, rectangular tube 6, pedal reinforcing plate 7, mounting bracket 8, seat support tube 9, seat reinforcing plate 10, sub-beam tube 11, upper reinforcing plate of beam tube 12, lower reinforcing plate of beam tube 13, and reinforcing tube 14. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0025] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In addition, the terms "horizontal," "vertical," etc., do not indicate that the component is required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted. In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Example:

[0027] Please see Figure 1 and Figure 2 A scooter frame includes a top tube 1, a main beam, a footrest frame, and a seat frame. The vertically inclined main beam includes two main beam tubes 2 arranged symmetrically on the left and right. The horizontally inclined footrest frame includes two footrest tubes 3 arranged symmetrically on the left and right. The horizontally inclined seat frame includes two seat tubes 4 arranged symmetrically on the left and right. The upper ends of the main beam tubes 2 on the left and right sides are connected to the top tube 1, and the lower ends are connected to the front ends of the footrest tubes 3 on the same side. The front end of the seat frame is higher than the footrest frame. A vertically inclined connecting frame is provided between the footrest frame and the seat frame. The connecting frame includes two symmetrically arranged connecting tubes 5. The lower end of the connecting tube 5 is connected to the rear end of the footrest tube 3 on the same side, and the upper end is connected to the seat tube 4 on the same side. The main beam tubes 2, footrest tubes 3, and connecting tubes 5 on the same side are integrally bent into a single structure. Rectangular tubes 6 are respectively provided above the two footrest tubes 3. The front end of the rectangular tubes 6 is connected to the main beam tube 2 on the same side, and the rear end is connected to the connecting tubes 5 on the same side.

[0028] The scooter frame of this invention features a scooter frame with horizontal rectangular tubes 6 added above the left and right scooter tubes 3. The front and rear ends of these rectangular tubes 6 are connected to the main beam tube 2 and connecting tube 5 on the same side, respectively. This distributes the stress on the middle of the scooter frame between the scooter tubes 3 and the rectangular tubes 6, reducing the possibility of deformation or damage to the scooter tubes 3. Furthermore, with comparable cross-sections, the rectangular tube 6 offers better bending resistance and rigidity than a round tube. Therefore, the use of rectangular tubes 6 in this invention provides better structural strength reinforcement for the scooter frame. For the main beam, this invention employs double main beam tubes 2, which not only improves the structural strength of the main beam itself, but also connects the upper ends of the two main beam tubes 2 to the upright tube 1 and the lower ends to the scooter tubes 3 on the same side, thus strengthening the connection between the main beam and the upright tube 1 and the scooter frame. The connection strength of the frame is improved. In addition, the main beam tube 2, pedal tube 3 and connecting tube 5 on the same side are integrated into a single structure, formed by bending a single round tube. The main beam tube 2, pedal tube 3 and connecting tube 5 on the same side are no longer connected by welding. This not only simplifies the assembly and production of the scooter frame, but also greatly improves the overall structural strength of the scooter frame. For the seat frame, this utility model adds a connecting frame between the pedal frame and the seat frame. The connecting tube 5, which extends backward at an angle and is integrated with the pedal tube 3, replaces the pedal tube 3 which is directly connected to the seat tube 4. This not only moves the connection point of the seat frame on the frame backward, which helps to reduce the stress on the connection point during driving and avoid connection failure, but also shortens the length of the independently welded seat frame, ensuring that the seat frame has better structural strength and reducing the possibility of seat frame deformation.

[0029] The scooter frame of this utility model strengthens the structural strength of the main beam, scooter frame, and seat frame, as well as the connection strength between them, by adding a reinforcing rectangular tube 6 above the scooter tube 3, using a double main beam tube 2 as the main beam, and forming an integral structure of the main beam tube 2, scooter tube 3, and connecting tube 5 in a single bent shape. The scooter tube 3 is connected to the seat tube 4 through the connecting tube 5. This effectively solves the problem of poor structural strength of existing scooter frames and improves the structural strength and reliability of scooter frames.

[0030] Please see Figure 2 and Figure 4 A pedal reinforcing plate 7 connects the middle of the rectangular tube 6 to the pedal tube 3 on the same side; this not only strengthens the connection between the rectangular tube 6 and the corresponding pedal tube 3, further improving the structural strength of the pedal frame, but also... Figure 4 As shown, the pedal reinforcement plate 7 provides a foundation for connection and support on both sides of the pedal frame, making it easier to install related mounting brackets 8 on both sides of the pedal frame.

[0031] Please see Figure 2 and Figure 3The upper end of the connecting tube 5 is connected to the front part of the seat tube 4 on the same side. The front of the seat frame is provided with a U-shaped seat support tube 9 with its opening facing the connecting frame. The two ends of the seat support tube 9 are connected to two connecting tubes 5 respectively. The front end of the seat tube 4 extends to connect with the seat support tube 9. In this way, the setting of the seat support tube 9 not only facilitates the installation of the seat based on the frame, but also, based on the connection between the connecting tube 5 and the seat tube 4, the seat support tube 9 is connected to the front end of the seat tube 4 and the connecting tube 5 respectively. The three are connected to each other to form a stable triangular structure, which further improves the connection strength between the seat frame and the connecting frame and is conducive to improving the overall stability of the scooter frame.

[0032] Please see Figure 1 and Figure 2 A seat reinforcement plate 10 is provided between the seat support tube 9 and the two connecting tubes 5. The upper end of the seat reinforcement plate 10 is connected to the seat support tube 9 and the lower end is connected to the corresponding connecting tube 5. In this way, the seat reinforcement plate 10 can provide support for the seat support tube 9 based on the connecting tube 5, which not only strengthens the connection strength between the seat support tube 9 and the connecting tube 5, but also further strengthens the stability of the above-mentioned triangular stable structure.

[0033] Please see Figure 1 and Figure 2 The lower end of the seat reinforcement plate 10 extends downward along the corresponding connecting pipe 5 to connect with the rectangular pipe 6 on the same side; in this way, the above-mentioned triangular stabilizing structure is also connected to the rectangular pipe 6 through the seat reinforcement plate 10, which distributes the force on the connecting pipe 5, further strengthens the connection between the seat frame and the pedal frame, and helps to improve the overall structural strength of the scooter frame.

[0034] Please see Figure 2 and Figure 3 The scooter frame also includes a sub-beam, which is vertically inclined and located behind the main beam. The sub-beam includes two sub-beam tubes 11 arranged symmetrically on the left and right. The sub-beam tubes 11 are located close to the main beam tube 2 on the same side. The upper end of the sub-beam tube 11 is connected to the upright tube 1, and the lower end is connected to the rectangular tube 6 on the same side. In this way, the addition of the sub-beam further strengthens the connection strength between the upright tube 1 and the scooter frame, which is conducive to improving the overall structural strength of the scooter frame.

[0035] Please see Figure 1 and Figure 2 The upper end of the sub-beam tube 11 is connected to the upper end of the main beam tube 2 on the same side by an upper reinforcing plate 12, and the lower end of the sub-beam tube 11 is connected to the lower end of the main beam tube 2 on the same side by a lower reinforcing plate 13. In this way, by adding the upper reinforcing plate 12 and the lower reinforcing plate 13, the structural connection between the sub-beam and the main beam is further strengthened, which is conducive to improving the overall structural strength of the scooter frame.

[0036] Please see Figure 1 and Figure 4 A reinforcing tube 14 is provided horizontally near the lower end of the main beam. The two ends of the reinforcing tube 14 are connected to the two main beam tubes 2 respectively. In this way, by adding the reinforcing tube 14, the structural continuity of the two main beam tubes 2 is strengthened, which is conducive to improving the overall structural strength of the scooter frame.

[0037] In summary, the scooter frame of this utility model, firstly, adds a reinforcing rectangular tube 6 above the footboard tube 3, the main beam adopts a double main beam tube 2, and the main beam tube 2, footboard tube 3, and connecting tube 5 are integrally bent into a whole structure, with the footboard tube 3 connected to the seat tube 4 through the connecting tube 5; secondly, adds a footboard reinforcing plate 7 between the rectangular tube 6 and the footboard tube 3 on the same side, and sets a seat support tube 9 to connect to the front end of the seat tube 4 and the connecting tube 5 respectively to form a stable triangular structure, adds a seat reinforcing plate 10 to connect the seat support tube 9, the connecting tube 5, and the rectangular tube 6 respectively, and adds a sub-beam to connect the upright tube 1 and the footboard frame; thereby significantly enhancing the structural strength of the main beam, footboard frame, and seat frame, as well as the connection strength between them, which is beneficial to improving the overall structural strength and reliability of the scooter frame.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and not to limit the technical solutions. Those skilled in the art should understand that any modifications or equivalent substitutions to the technical solutions of this utility model that do not depart from the spirit and scope of this technical solution should be covered within the scope of the claims of this utility model.

Claims

1. A scooter frame, comprising a top tube, a main beam, a footrest frame, and a seat frame, wherein the vertically inclined main beam comprises two main beam tubes symmetrically arranged on the left and right, the horizontally inclined footrest frame comprises two footrest tubes symmetrically arranged on the left and right, and the horizontally inclined seat frame comprises two seat tubes symmetrically arranged on the left and right; the upper end of the main beam tube is connected to the top tube, and the lower end is connected to the front end of the footrest tube on the same side, characterized in that: The front end of the seat frame is higher than the pedal frame. A vertically inclined connecting frame is provided between the pedal frame and the seat frame. The connecting frame includes two connecting tubes arranged symmetrically on the left and right. The lower end of the connecting tube is connected to the rear end of the pedal tube on the same side, and the upper end is connected to the seat tube on the same side. The main beam tube, pedal tube and connecting tube on the same side are integrally bent into a whole structure. Rectangular tubes are provided above the two pedal tubes respectively. The front end of the rectangular tube is connected to the main beam tube on the same side, and the rear end is connected to the connecting tube on the same side.

2. The scooter frame according to claim 1, characterized in that: A pedal reinforcement plate connects the middle of the rectangular tube to the pedal tube on the same side.

3. The scooter frame according to claim 1, characterized in that: The upper end of the connecting tube is connected to the front position of the seat tube on the same side. The front of the seat frame is provided with a U-shaped seat support tube with its opening facing the connecting frame. The two ends of the seat support tube are connected to two connecting tubes respectively. The front end of the seat tube extends to connect with the seat support tube.

4. The scooter frame according to claim 3, characterized in that: A seat reinforcement plate is installed between the seat support tube and the two connecting tubes. The upper end of the seat reinforcement plate is connected to the seat support tube, and the lower end is connected to the corresponding connecting tube.

5. The scooter frame according to claim 4, characterized in that: The lower end of the seat reinforcement plate extends downward along the corresponding connecting tube to connect with the rectangular tube on the same side.

6. The scooter frame according to claim 1, characterized in that: The scooter frame also includes a sub-beam, which is vertically inclined and located behind the main beam. The sub-beam includes two sub-beam tubes arranged symmetrically on the left and right sides. The sub-beam tubes are located close to the main beam tubes on the same side. The upper end of the sub-beam tube is connected to the upright tube, and the lower end is connected to the rectangular tube on the same side.

7. A scooter frame according to claim 6, characterized in that: The upper end of the secondary beam tube is connected to the upper end of the main beam tube on the same side by an upper reinforcing plate, and the lower end of the secondary beam tube is connected to the lower end of the main beam tube on the same side by a lower reinforcing plate.

8. The scooter frame according to claim 1, characterized in that: A reinforcing tube is installed horizontally near the lower end of the front of the main beam, and the two ends of the reinforcing tube are connected to the two main beam tubes respectively.

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