A front backrest pole, a front backrest and a three-wheeled electric vehicle frame
By designing a front backrest bar that combines a rotating structure and a limiting structure on an electric tricycle, the problem of inconvenience in getting on and off small wheelbase models has been solved, achieving a convenient passenger boarding and alighting experience and adapting to the needs of different models.
Patent Information
- Application Number
- CN202521035707.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-23
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-05-23
AI Technical Summary
The front and rear backrest bars of existing electric tricycles are fixed structures that cannot be moved, making it inconvenient to get on and off the vehicle in small wheelbase models, especially for the elderly.
Design a front backrest bar that combines a rotating structure with a limiting structure. The rotating structure is mounted on the vehicle frame, while the limiting structure restricts the rotation range, thereby enabling the front backrest bar to move freely, expanding the rear seat space, and facilitating getting in and out of the vehicle.
By rotating forward using a rotating structure as a fulcrum, the rear space is temporarily expanded to avoid squeezing when passengers get in and out of the vehicle. This ensures that the driver's space is not encroached when someone is in the driver's seat and can be returned to the correct position.
Smart Images
Figure CN224676270U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electric tricycle technology, and in particular to a front backrest bar, a front backrest, and an electric tricycle frame. Background Technology
[0002] Current electric tricycles are divided into front-row driving and rear-row passenger functions, with both the front and rear backrests being fixed structures that cannot be moved. This fixed structure may meet basic ergonomic requirements for long-wheelbase models, but it is less than ideal for short-wheelbase models. Short-wheelbase models are particularly popular among the elderly because they are easy to handle and convenient for navigating residential areas and narrow roads. In short-wheelbase models, the small size of the rear passengers makes getting in and out inconvenient, especially for elderly users. Utility Model Content
[0003] The purpose of this invention is to provide a front backrest bar, a front backrest, and an electric tricycle frame to solve the problems existing in the prior art. By pushing the front backrest or front backrest bar forward, the bar can rotate forward using a rotating structure as a fulcrum, temporarily expanding the rear seat space and facilitating getting in and out of the vehicle. The limiting structure can restrict the rotation range of the bar, ensuring that the bar rotates forward a suitable distance and returns to the correct position when resetting.
[0004] To achieve the above objectives, this utility model provides the following solution:
[0005] This utility model provides a front backrest bar, including a bar body, the bar body being provided with a rotating structure for allowing the bar body to move, the connecting end of the rotating structure being mounted on the vehicle frame, the bar body also being provided with a limiting structure for limiting the range of motion of the bar body, the connecting end of the limiting structure being mounted on the vehicle frame; the first end of the bar body is the front backrest mounting end, and the rotating structure and the limiting structure are located away from the front backrest mounting end.
[0006] In one embodiment, the rotating structure and the limiting structure are provided separately, with the rotating structure located near the second end of the bar and the limiting structure located between the front backrest mounting end and the rotating structure.
[0007] In one embodiment, the rotating structure includes a rotating hole and a central shaft. The central shaft is inserted into the rotating hole, which faces the vehicle frame. The central shaft is fixedly installed at one end of the vehicle frame as the connecting end of the rotating structure, and at the other end of the vehicle frame, it extends out of the rotating hole.
[0008] In one embodiment, the second end of the lever body is provided with an ear plate, and the rotating hole is provided on the ear plate, wherein the rotating hole is a through hole.
[0009] In one embodiment, the rotating structure is a sleeve, the lever is inserted into the sleeve and fixedly connected to the sleeve, and a rotating shaft is provided on the side of the sleeve facing the frame. The end of the rotating shaft that is hinged to the frame is the connecting end of the rotating structure.
[0010] In one embodiment, the limiting structure includes a mounting plate with a sliding hole. The first end of the fixed shaft is the connecting end of the limiting structure. The first end of the fixed shaft is fixedly mounted on the frame. The second end of the fixed shaft passes through the sliding hole, which is an arc-shaped hole. The mounting plate is also provided with a pushing part that abuts against the bar.
[0011] In one embodiment, the rotating structure and the limiting structure are integrated on a mounting block. The rotating structure is a rotating shaft, with a first end of the rotating shaft serving as a connecting end and hinged to the vehicle frame. The second end of the rotating shaft is fixedly connected to the mounting block. The limiting structure includes a limiting hole and a limiting shaft. The first end of the limiting shaft serves as a connecting end and is fixedly connected to the vehicle frame. The second end of the limiting shaft extends into the limiting hole, which is an arc-shaped hole. The second end of the rotating shaft is also located on the same plane as the limiting hole on the mounting block. The mounting block is located away from the front backrest mounting end.
[0012] In one embodiment, the second end of the lever is fixedly connected to the mounting block.
[0013] This utility model also provides a front backrest, including a backrest panel and two front backrest bars as described above, with the two front backrest bars respectively installed on both sides of the backrest panel.
[0014] This utility model also provides an electric tricycle frame, including a front seat bucket, a base frame, and the aforementioned front backrest; when the rotating structure and the limiting structure are separately provided, the rotating structure is installed on the front seat bucket, and the limiting structure is installed on the front seat bucket or the base frame; when the rotating structure and the limiting structure are integrated on the mounting block, the mounting block is installed on the front seat bucket.
[0015] The present invention achieves the following technical advantages over the prior art:
[0016] This utility model provides a front backrest bar, a front backrest, and an electric tricycle. The front backrest bar includes a bar body and a rotating structure and a limiting structure mounted on the bar body. The connecting end of the rotating structure is connected to the vehicle frame. Pushing the front backrest or the front backrest bar forward allows the bar body to rotate forward around the rotating structure as a fulcrum, temporarily expanding the rear seat space and preventing rear passengers from being squeezed or collided with the front backrest, thus facilitating entry and exit. The connecting end of the limiting structure is connected to the vehicle frame. The limiting structure restricts the rotation range of the bar body, ensuring that the bar body rotates forward a suitable distance so that the front backrest does not excessively encroach on the driver's space when someone is in the driver's seat, and also ensuring that the bar body returns to the correct position when it resets, preventing the front backrest from encroaching on the rear seat space. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the inner structure of a front backrest bar with a separate rotating structure and a limiting structure in an embodiment of this utility model.
[0019] Figure 2 This is a schematic diagram of the structure at point A;
[0020] Figure 3 This is a schematic diagram of the structure at point B;
[0021] Figure 4 This is a schematic diagram of the outer structure of a front backrest bar with a separate rotating structure and a limiting structure in an embodiment of this utility model.
[0022] Figure 5 This is a schematic diagram of the structure of a sleeve in an embodiment of the present utility model;
[0023] Figure 6 This is a schematic diagram of the inner structure of a front backrest bar including a mounting block in an embodiment of the present utility model.
[0024] Figure 7 This is a schematic diagram of the structure at point C;
[0025] Figure 8 This is a schematic diagram of the outer structure of a front backrest bar including a mounting block in an embodiment of the present utility model.
[0026] Figure 9 This is a schematic diagram of the electric tricycle frame in an embodiment of the present invention, showing that the rotating structure and the limiting structure are set separately.
[0027] Figure 10 This is a schematic diagram of the normal structure of a partial electric tricycle frame including mounting blocks in an embodiment of this utility model;
[0028] Figure 11 This is a schematic diagram of the structure of the partial electric tricycle frame including the mounting block in the getting on and off state in an embodiment of this utility model.
[0029] Among them, 1. bar body; 2. rotating hole; 3. central shaft; 4. ear plate; 5. rotating shaft; 6. mounting plate; 7. sliding hole; 8. fixed shaft; 9. mounting block; 10. rotating shaft; 11. limiting hole; 12. limiting shaft; 13. backrest plate; 14. front seat bucket; 15. base frame; 16. sleeve. Detailed Implementation
[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. 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 skilled in the art without creative effort are within the protection scope of the present utility model.
[0031] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the implementation of this utility model and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this utility model, should still fall within the scope of the technical content disclosed herein. In the description of this utility model, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are merely for the convenience of describing this utility model 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 used for descriptive purposes only and should not be construed as indicating or implying relative importance. Therefore, features specified with "first," "second," etc., may explicitly or implicitly include one or more of those features. In the description of this utility model, unless otherwise stated, "multiple" means two or more.
[0032] It should also be noted that in the embodiments of this application, the same reference numerals are used to denote the same component or the same part.
[0033] The purpose of this invention is to provide a front backrest bar, a front backrest, and an electric tricycle frame to solve the problems existing in the prior art. By pushing the front backrest or front backrest bar forward, the bar can rotate forward using a rotating structure as a fulcrum, temporarily expanding the rear seat space and facilitating getting in and out of the vehicle. The limiting structure can restrict the rotation range of the bar, ensuring that the bar rotates forward a suitable distance and returns to the correct position when resetting.
[0034] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0035] Example 1
[0036] like Figures 1 to 11 As shown, this utility model provides a front backrest bar, including a bar body 1. The bar body 1 is equipped with a rotating structure for enabling its movement. The connecting end of the rotating structure is mounted on the vehicle frame. The bar body 1 is also equipped with a limiting structure for restricting the range of motion of the bar body 1. The connecting end of the limiting structure is mounted on the vehicle frame. The first end of the bar body 1 is the front backrest mounting end, and the rotating structure and the limiting structure are away from the front backrest mounting end. The connecting end of the rotating structure is connected to the vehicle frame. Pushing the front backrest or the front backrest bar forward allows the bar body 1 to rotate forward with the rotating structure as a fulcrum, temporarily expanding the rear seat space and preventing rear passengers from being squeezed or collided with the front backrest, thus facilitating getting in and out of the vehicle. The connecting end of the limiting structure is connected to the vehicle frame. The limiting structure can limit the rotation range of the bar body 1, ensuring that the bar body 1 rotates forward a suitable distance so that the front backrest does not excessively encroach on the driver's space when someone is in the driver's seat, and also ensuring that the bar body 1 returns to the correct position when it resets, preventing the front backrest from encroaching on the rear seat space.
[0037] In one embodiment, the rotating structure and the limiting structure are set separately. The rotating structure is set near the second end of the bar body 1, and the limiting structure is set between the front backrest mounting end and the rotating structure.
[0038] In one embodiment, the rotating structure includes a rotating hole 2 and a central shaft 3. The central shaft 3 is inserted into the rotating hole 2, with the rotating hole 2 facing the frame. The central shaft 3 is fixedly installed at one end of the frame, serving as the connecting end of the rotating structure, and extends out of the rotating hole 2 at the other end of the frame. In use, the central shaft 3 remains stationary, while the lever 1 rotates around the central shaft 3. The rotating hole 2 is directly formed on the lever 1, resulting in a simple structure with strong adaptability. The central shaft 3 can penetrate the lever 1 or have its non-frame-connected end positioned within the lever 1. When the central shaft 3 penetrates the lever 1, it can be a bolt with its head located on the side of the lever 1 furthest from the frame. The bolt head is larger than the rotating hole 2, and its head can limit the lever 1, preventing it from detaching from the central shaft 3.
[0039] In one embodiment, a lug 4 is provided at the second end of the lever body 1, and a rotating hole 2 is provided on the lug 4. The rotating hole 2 is a through hole. In order to meet the requirement of free rotation, the size of the rotating hole 2 must be larger than the size of the central shaft 3. If the lever body 1 is a hollow tube, directly opening the rotating hole 2 on the lever body 1 is equivalent to directly connecting the internal space of the lever body 1 with the external environment. Dust, moisture and other fine dirt will enter the interior of the lever body 1 through the rotating hole 2, which may cause internal corrosion of the lever body 1 and thus reduce the load-bearing capacity of the lever body 1. Opening the rotating hole 2 on the lug 4 can ensure the sealing of the lever body 1 and prevent fine dirt from entering the lever body 1.
[0040] In one embodiment, the rotating structure is a sleeve 16. The lever 1 is inserted into and fixedly connected to the sleeve 16. A rotating shaft 5 is provided on the side of the sleeve 16 facing the frame. The end of the rotating shaft 5 that is hinged to the frame is the connection end of the rotating structure. As an independent structure, the sleeve 16 can be fixedly connected to the lever 1 through a detachable connector, which can accommodate levers 1 of different sizes and allows for convenient assembly and disassembly of the lever 1. At the same time, it eliminates the need to drill holes in the lever 1, ensuring the integrity of the lever 1 and reducing processing steps.
[0041] In one embodiment, the limiting structure includes a mounting plate 6 with a sliding hole 7. The first end of a fixed shaft 8 serves as the connecting end of the limiting structure, and the first end of the fixed shaft 8 is fixedly mounted on the frame. The second end of the fixed shaft 8 passes through the sliding hole 7, which is an arc-shaped hole. The mounting plate 6 also has a pushing part that abuts against the lever 1. During rotation, all points on the lever 1, except for the connecting end of the rotating structure, rotate around the connecting end of the rotating structure, and the trajectory of each point is an arc. The mounting plate 6 abuts against the lever 1. When the lever 1 rotates, the mounting plate 6 is pushed by the lever 1 to perform an arc-shaped motion. The arc shape of the sliding hole 7 matches the trajectory of the mounting plate 6, so the mounting plate 6 can rotate in a planar motion within a certain range without hindering the rotation of the lever 1. As the lever 1 rotates, when the sliding hole 7 abuts against the fixed shaft 8 and the mounting plate 6 can no longer move, the lever 1 reaches its rotation limit.
[0042] In one embodiment, the sliding hole 7 is an elongated hole.
[0043] In one embodiment, the rotating structure and the limiting structure are integrated on the mounting block 9. The rotating structure is a rotating shaft 10, with its first end being the connecting end of the rotating structure and hinged to the vehicle frame. The second end of the rotating shaft 10 is fixedly connected to the mounting block 9. The limiting structure includes a limiting hole 11 and a limiting shaft 12. The first end of the limiting shaft 12 is the connecting end of the limiting structure and is fixedly connected to the vehicle frame. The second end of the limiting shaft 12 extends into the limiting hole 11, which is an arc-shaped hole. The second end of the rotating shaft 10 and the limiting hole 11 are located on the same plane as the mounting block 9, which is located away from the front backrest mounting end. The mounting block 9 rotates around the rotating shaft 10, therefore its movement trajectory through the limiting shaft 12 is an arc-shaped trajectory, requiring the limiting hole 11 to be designed as an arc-shaped hole matching the movement trajectory. The limiting shaft 12 can be a bolt, with the bolt head located inside the mounting block 9.
[0044] In one embodiment, the second end of the lever body 1 is fixedly connected to the mounting block 9.
[0045] Example 2
[0046] like Figures 1-11 As shown, the present invention also provides a front backrest, including a backrest panel 13 and two front backrest bars as described above, with the two front backrest bars respectively installed on both sides of the backrest panel 13.
[0047] Example 3
[0048] like Figures 1-11As shown, this utility model also provides an electric tricycle frame, including a front seat bucket 14, a base frame 15 and the aforementioned front backrest. When the rotating structure and the limiting structure are set separately, the rotating structure is installed on the front seat bucket 14, and the limiting structure is installed on the front seat bucket 14 or the base frame 15. When the rotating structure and the limiting structure are integrated on the mounting block 9, the mounting block 9 is installed on the front seat bucket 14.
[0049] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0050] If this utility model discloses or relates to mutually fixedly connected parts or structural components, then, unless otherwise stated, a fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws), or a non-detachable fixed connection (e.g., riveting, welding). Of course, mutually fixed connections can also be replaced by an integral structure (e.g., manufactured using a casting process) (except where it is obviously impossible to use an integral forming process).
[0051] In addition, unless otherwise stated, the terms used to indicate positional relationships or shapes in any of the technical solutions disclosed in this utility model above include states or shapes that are similar to, close to, or approximate with them.
[0052] Any component provided by this utility model can be assembled from multiple individual components, or it can be a single component manufactured by a one-piece molding process.
[0053] Any adaptive changes made according to actual needs are within the protection scope of this utility model.
[0054] It should be noted that, for those skilled in the art, it is obvious that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0055] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.
Claims
1. A front backrest bar, characterized in that: Includes a lever body (1), the lever body (1) is provided with a rotating structure for allowing the lever body (1) to have mobility, the connecting end of the rotating structure is mounted on the frame, the lever body (1) is also provided with a limiting structure for limiting the range of motion of the lever body (1), the connecting end of the limiting structure is mounted on the frame; The first end of the bar (1) is the front backrest mounting end, and the rotating structure and the limiting structure are far away from the front backrest mounting end.
2. The front backrest bar according to claim 1, characterized in that: The rotating structure and the limiting structure are set separately. The rotating structure is set at a position close to the second end of the bar (1), and the limiting structure is set between the front backrest mounting end and the rotating structure.
3. The front backrest bar according to claim 2, characterized in that: The rotating structure includes a rotating hole (2) and a central shaft (3). The central shaft (3) is inserted into the rotating hole (2). The rotating hole (2) faces the frame. The central shaft (3) is fixedly installed at one end of the frame as the connecting end of the rotating structure. The central shaft (3) is fixedly installed at one end of the frame and extends out of the rotating hole (2).
4. The front backrest bar according to claim 3, characterized in that: The second end of the lever body (1) is provided with an ear plate (4), and the rotating hole (2) is provided on the ear plate (4). The rotating hole (2) is a through hole.
5. The front backrest bar according to claim 2, characterized in that: The rotating structure is a sleeve (16). The bar body (1) is inserted into the sleeve (16) and fixedly connected to the sleeve (16). A rotating shaft (5) is provided on the side of the sleeve (16) facing the frame. The end of the rotating shaft (5) that is hinged to the frame is the connection end of the rotating structure.
6. The front backrest bar according to claim 2, characterized in that: The limiting structure includes a mounting plate (6), on which a sliding hole (7) is provided. The first end of the fixed shaft (8) is the connecting end of the limiting structure. The first end of the fixed shaft (8) is fixedly installed on the frame. The second end of the fixed shaft (8) passes through the sliding hole (7). The sliding hole (7) is an arc-shaped hole. The mounting plate (6) is also provided with a pushing part that abuts against the bar body (1).
7. The front backrest bar according to any one of claims 1 to 6, characterized in that: The rotating structure and the limiting structure are integrated on the mounting block (9). The rotating structure is a rotating shaft (10). The first end of the rotating shaft (10) is the connecting end of the rotating structure. The first end of the rotating shaft (10) is hinged to the frame. The second end of the rotating shaft (10) is fixedly connected to the mounting block (9). The limiting structure includes a limiting hole (11) and a limiting shaft (12). The first end of the limiting shaft (12) is the connecting end of the limiting structure. The first end of the limiting shaft (12) is fixedly connected to the vehicle frame. The second end of the limiting shaft (12) extends into the limiting hole (11). The limiting hole (11) is an arc-shaped hole. The second end of the rotating shaft (10) is also located on the same plane as the limiting hole (11) of the mounting block (9); The mounting block (9) is located away from the front backrest mounting end.
8. The front backrest bar according to claim 7, characterized in that: The second end of the lever (1) is fixedly connected to the mounting block (9).
9. A front backrest, characterized in that: It includes a backrest panel (13) and two front backrest bars as described in claim 7 or 8, the two front backrest bars being respectively installed on both sides of the backrest panel (13).
10. A frame for an electric tricycle, characterized in that: Includes a front seat bucket (14), a base frame (15), and a front backrest as described in claim 9; When the rotating structure and the limiting structure are set separately, the rotating structure is installed on the front seat bucket (14), and the limiting structure is installed on the front seat bucket (14) or the base frame (15); When the rotating structure and the limiting structure are integrated on the mounting block (9), the mounting block (9) is mounted on the front seat bucket (14).