Low wind resistance streamlined electric bicycle frame structure

Abstract

This utility model relates to the field of electric bicycle frame technology, and discloses a low-drag streamlined electric bicycle frame structure. A head tube is fixed to one end of the crossbeam, and a connector is fixed to the bottom end of the support rod. The support rod has an integrally formed, inclined distribution of airflow dividers on its side. A reinforcing rib is fixed between the connector and the head tube, and an inwardly recessed arc-shaped airflow guide groove is integrally formed on the reinforcing rib. A transversely penetrating airflow guide hole is also present inside the reinforcing rib. During riding, the oncoming wind force first converges through the arc-shaped airflow guide groove of the reinforcing rib, and then enters the airflow guide hole, forming an initial airflow divider, effectively reducing the frontal impact of wind pressure on the frame. The wind force discharged through the airflow guide hole is further obliquely cut by the airflow dividers of the support rod, dispersing the concentrated airflow into multi-directional flow, thereby reducing overall wind resistance. The overall streamlined design of the frame, combined with the aforementioned airflow guide mechanism, significantly reduces air resistance when the electric bicycle is traveling at high speeds.

Description

Technical Field

[0001] This utility model relates to the field of electric bicycle frame technology, specifically a low-drag streamlined electric bicycle frame structure. Background Technology

[0002] With the increasing popularity of electric bicycles, users have higher and higher requirements for their performance, especially in terms of speed and range. Wind resistance is one of the important factors affecting the speed and energy consumption of electric bicycles.

[0003] Chinese patent discloses a bicycle frame (authorization announcement number: CN110341863A), which adopts a detachable structure. It can be folded and disassembled for easy loading into a car during transportation. However, as can be seen from the accompanying drawings and the specification, the support tube lacks corresponding airflow guiding measures, which can easily lead to increased air resistance at high speeds and thus fail to improve riding efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a low-drag, streamlined electric bicycle frame structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a low-drag streamlined electric bicycle frame structure, including a crossbeam, one end of which is fixedly connected to a hollow tube, the front and rear surfaces of which are provided with first insertion holes, the other end of which is fixedly connected to a head tube, the bottom end of which is fixedly connected to a support rod, the bottom end of which is fixedly connected to a connector, and the side of which is integrally formed with inclined distribution diverters, a reinforcing rib is fixedly connected between the connector and the head tube, the reinforcing rib has an integrally formed inwardly recessed arc-shaped guide groove, the interior of which has a guide hole that runs horizontally through, a seat cushion is installed on the top of the hollow tube, a guide rod is fixedly connected to the bottom of the seat cushion, the front and rear surfaces of which are provided with second insertion holes, and a plug-in mechanism is installed on the outside of the hollow tube, the plug-in mechanism including a fixing block, a groove and a plug rod, the inside of which has two grooves, the plug rod passing through the grooves, one end of which is fixedly connected to a pull block, a limiting block is fixedly sleeved on the outside of the plug rod, and a spring is sleeved on the outside of the plug rod.

[0006] As a preferred embodiment of this utility model, the guide rod is inserted into the top of the hollow tube, and the center points of the first insertion hole, the second insertion hole, and the insertion rod are all on the same horizontal line.

[0007] As a preferred embodiment of this utility model, one end of the spring is fixedly connected to the limiting block, and the other end of the spring is fixedly connected to the inside of the groove.

[0008] As a preferred embodiment of this utility model, the first socket and the second socket are of equal size, and the diameter of the plug rod is smaller than the diameter of the first socket and the second socket.

[0009] As a preferred embodiment of this utility model, the bottom of the seat cushion abuts against the top of the fixing block, and the fixing block is fixedly sleeved on the outside of the hollow tube.

[0010] As a preferred embodiment of this utility model, the limiting block is located inside the groove, the fixing block and the insertion rod are slidably connected, and the top of the fixing block and the hollow tube are flush.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. When riding, the oncoming wind force first converges through the arc-shaped guide groove of the reinforcing rib, and then enters the guide hole to form a preliminary diversion, which effectively reduces the frontal impact of wind pressure on the frame. The wind force discharged through the guide hole is further cut by the diversion part of the support rod at an angle, dispersing the concentrated airflow into multi-directional flow, significantly reducing eddies and tail turbulence, thereby reducing the overall wind resistance. The overall frame adopts a streamlined design, which works in conjunction with the above-mentioned wind force diversion mechanism, so that the air resistance of the electric bicycle is greatly reduced when riding at high speed, improving riding efficiency and extending the range.

[0013] 2. Hold the two pull blocks and pull them in opposite directions. After inserting the guide rod into the hollow tube, the seat cushion will contact the top of the fixing block. At the same time, the center points of the first insertion hole, the second insertion hole, and the insertion rod will be on the same horizontal line. After releasing the two pull blocks, the two insertion rods will move relative to each other under the action of the spring until the two insertion rods move into the second insertion hole, thus facilitating the fixing of the seat cushion. This method facilitates quick assembly and disassembly of the seat cushion. Compared with the traditional bolt fixing method, this design avoids the difficulty of disassembly caused by thread wear or corrosion. At the same time, it can be completed without the aid of external tools, making assembly and disassembly more convenient and faster. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the low wind resistance streamlined electric bicycle frame structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the reinforcing ribs in the low wind resistance streamlined electric bicycle frame structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the hollow tube structure in the low wind resistance streamlined electric bicycle frame structure of this utility model;

[0017] Figure 4 This is a cross-sectional view of the seat and guide rod in the low wind resistance streamlined electric bicycle frame structure of this utility model.

[0018] In the diagram: 1. Crossbeam; 2. Hollow tube; 21. First insertion hole; 3. Head tube; 4. Support rod; 5. Connector; 6. Diverter; 7. Reinforcing rib; 71. Guide groove; 72. Guide hole; 8. Seat cushion; 81. Guide rod; 82. Second insertion hole; 9. Insertion mechanism; 91. Fixing block; 92. Groove; 93. Insert rod; 94. Pull block; 95. Limiting block; 96. Spring. Detailed Implementation

[0019] 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.

[0020] Please see Figures 1 to 4 This utility model provides a low-drag, streamlined electric bicycle frame structure, including a crossbeam 1. A hollow tube 2 is fixedly connected to one end of the crossbeam 1. The front and rear surfaces of the hollow tube 2 are provided with first insertion holes 21. A head tube 3 is fixedly connected to the other end of the crossbeam 1. A support rod 4 is fixedly connected to the bottom end of the hollow tube 2. A connector 5 is fixedly connected to the bottom end of the support rod 4. An inclined distribution diverter 6 is integrally formed on the side of the support rod 4. A reinforcing rib 7 is fixedly connected between the connector 5 and the head tube 3. An inwardly recessed arc-shaped guide groove 71 is integrally formed on the reinforcing rib 7. The interior of the reinforcing rib 7 is horizontally... A guide hole 72 is provided through the hollow tube 2. A seat 8 is installed on the top of the hollow tube 2. A guide rod 81 is fixed to the bottom of the seat 8. A second insertion hole 82 is provided on both the front and rear surfaces of the guide rod 81. An insertion mechanism 9 is installed on the outside of the hollow tube 2. The insertion mechanism 9 includes a fixing block 91, a groove 92 and an insertion rod 93. Two grooves 92 are provided inside the fixing block 91. The insertion rod 93 passes through the grooves 92. A pull block 94 is fixed to one end of the insertion rod 93. A limiting block 95 is fixedly sleeved on the outside of the insertion rod 93. A spring 96 is sleeved on the outside of the insertion rod 93.

[0021] Furthermore, the guide rod 81 is inserted into the top of the hollow tube 2, and the center points of the first insertion hole 21, the second insertion hole 82 and the insertion rod 93 are all on the same horizontal line, ensuring accurate alignment of the seat cushion 8 during installation and avoiding fixation failure or structural damage caused by misalignment.

[0022] Furthermore, one end of the spring 96 is fixed to the limiting block 95, and the other end of the spring 96 is fixed inside the groove 92. The elastic restoring force of the spring 96 drives the insertion rod 93 to automatically reset, thereby achieving quick locking of the seat cushion 8.

[0023] Furthermore, the first socket 21 and the second socket 82 are of equal size, and the diameter of the plug 93 is smaller than the diameter of the first socket 21 and the second socket 82, providing an appropriate fitting clearance to facilitate the smooth insertion of the plug 93 into the first socket 21 and the second socket 82, while avoiding jamming due to tolerance.

[0024] Furthermore, the bottom of the seat cushion 8 abuts against the top of the fixing block 91, which is fixedly sleeved on the outside of the hollow tube 2. When the seat cushion 8 and the fixing block 91 come into contact, the center points of the first insertion hole 21, the second insertion hole 82 and the insertion rod 93 are all on the same horizontal line. The insertion rod 93 can be quickly inserted into the first insertion hole 21 and the second insertion hole 82 without manual alignment to install the seat cushion 8.

[0025] Furthermore, the limiting block 95 is located inside the groove 92, the fixing block 91 and the insertion rod 93 are slidably connected, the fixing block 91 and the top of the hollow tube 2 are level, when the fixing block 91 and the top of the hollow tube 2 are level, the seat cushion 8 can contact the fixing block 91, thereby facilitating the user to actually disassemble and assemble the seat cushion 8.

[0026] Working principle: When driving, the oncoming wind first impacts the arc-shaped guide groove 71 of the reinforcing rib 7. The wind force is gathered by the guide groove 71 and discharged through the transverse guide hole 72. The guide hole 72 guides the wind force to the diversion part 6 on the support rod 4. The diversion part 6 cuts the concentrated airflow and discharges it to both sides, ultimately achieving the purpose of reducing wind resistance. Hold the two pull blocks 94 with both hands and pull them outward. The insertion rod 93 is removed from the second insertion hole 82. Take the seat cushion 8 along with the guide rod 81 out of the hollow tube 2. When installing, align the guide rod 81 with the hollow tube 2 and insert it. When the seat cushion 8 is fixed... After block 91 contacts, releasing pull block 94 pushes spring 96 to push insertion rod 93 to automatically insert into first insertion hole 21 and second insertion hole 82, completing the quick fixation of seat cushion 8. The bottom of seat cushion 8 abuts against the top of fixing block 91, while fixing block 91 and the top of hollow tube 2 are level, which can ensure that first insertion hole 21 and second insertion hole 82 are automatically aligned. The diameter of insertion rod 93 is smaller than the diameter of first insertion hole 21 and second insertion hole 82 to ensure smooth insertion. Limiting block 95 restricts the stroke of insertion rod 93 to ensure reliability, and spring 96 provides continuous locking force to prevent loosening.

[0027] 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. A low-drag streamlined electric bicycle frame structure, including a crossbeam (1), characterized in that, One end of the crossbeam (1) is fixedly connected to a hollow tube (2), and the front and rear surfaces of the hollow tube (2) are provided with first insertion holes (21). The other end of the crossbeam (1) is fixedly connected to a head tube (3). The bottom end of the hollow tube (2) is fixedly connected to a support rod (4), and the bottom end of the support rod (4) is fixedly connected to a connector (5). The side of the support rod (4) is integrally formed with inclined distribution diversion parts (6). A reinforcing rib (7) is fixedly connected between the connector (5) and the head tube (3). An inwardly recessed arc-shaped guide groove (71) is integrally formed on the reinforcing rib (7). A guide hole (72) is transversely penetrating inside the reinforcing rib (7). The hollow tube (2) A seat cushion (8) is installed on the top, and a guide rod (81) is fixedly connected to the bottom of the seat cushion (8). A second insertion hole (82) is opened on both the front and rear surfaces of the guide rod (81). A plug-in mechanism (9) is installed on the outside of the hollow tube (2). The plug-in mechanism (9) includes a fixing block (91), a groove (92) and a plug rod (93). Two grooves (92) are opened inside the fixing block (91). The plug rod (93) passes through the groove (92). A pull block (94) is fixedly connected to one end of the plug rod (93). A limiting block (95) is fixedly sleeved on the outside of the plug rod (93). A spring (96) is sleeved on the outside of the plug rod (93).

2. The low-drag streamlined electric bicycle frame structure according to claim 1, characterized in that, The guide rod (81) is inserted into the top of the hollow tube (2), and the center points of the first insertion hole (21), the second insertion hole (82) and the insertion rod (93) are all on the same horizontal line.

3. The low-drag streamlined electric bicycle frame structure according to claim 2, characterized in that, One end of the spring (96) is fixed to the limiting block (95), and the other end of the spring (96) is fixed inside the groove (92).

4. The low-drag streamlined electric bicycle frame structure according to claim 3, characterized in that, The first socket (21) and the second socket (82) are the same size, and the diameter of the plug (93) is smaller than the diameter of the first socket (21) and the second socket (82).

5. The low-drag streamlined electric bicycle frame structure according to claim 4, characterized in that, The bottom of the seat cushion (8) abuts against the top of the fixing block (91), which is fixedly sleeved on the outside of the hollow tube (2).

6. The low-drag streamlined electric bicycle frame structure according to claim 5, characterized in that, The limiting block (95) is located inside the groove (92), the fixing block (91) and the insertion rod (93) are slidably connected, and the top of the fixing block (91) and the hollow tube (2) are level.

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