High-strength non-spliced girder

Abstract

The utility model discloses a high -strength non splice girder, specifically relates to electric bicycle girder technical field, including girder mechanism and wire protection mechanism, the wire protection mechanism sets up inside the girder mechanism, and there is the link lead wire through in the inside of wire protection mechanism. The utility model discloses a girder mechanism adopts integrated aluminum alloy material integrated stretching process manufacturing, eliminates the welding / riveting weak point of traditional splice girder, improves overall strength and size accuracy, avoids the problem of loosening, deformation or fracture caused by long -term load or impact, in addition, through the wire protection mechanism that sets up, the uniform distribution's ball of wire protection mechanism inner wall inserts, and the outer wall of link lead wire is pasted, reduces the friction of lead wire and hole wall in the folding process, and the rubber ring is built -in in the upper and lower end camber surface ring, and the clamping adjustment function is realized through the rotating ring, can be fixed lead wire when convenient assembly, can also hold up lead wire when folding, avoids the skin abrasion, prolongs the life.

Description

Technical Field

[0001] This utility model relates to the field of electric bicycle frame technology, and in particular to a high-strength non-spliced ​​frame. Background Technology

[0002] With the diversification of urban travel needs and people's pursuit of convenient transportation, three-section folding electric bicycles, as an environmentally friendly and flexible personal transportation tool, have been widely used and developed. Among them, folding electric bicycles are favored by consumers due to their ease of carrying and storage. In the design of folding electric bicycles, the frame, as a key load-bearing component, directly affects the stability, safety, and user experience of the entire vehicle.

[0003] The inventors have discovered at least the following problems in the prior art:

[0004] Most existing three-section folding electric bicycles have a spliced ​​frame. This structure usually assembles multiple parts together by welding, riveting or other connection methods to form a complete frame. Due to the presence of multiple connection points, the strength of these parts is often low, which can easily become the weak points of the entire frame. Under long-term load and external impact, problems such as loosening, deformation or even breakage may occur, affecting the overall safety and service life of the vehicle.

[0005] In addition, the various wires (such as electrical wires and signal wires) of a three-section folding electric bicycle need to pass through the inside of the frame to ensure the normal operation of the vehicle. However, when the wires pass through the holes opened in the frame, the installation process is relatively complicated, and there is a lack of effective protection between the wires and the hole walls. As a result, the wires are prone to friction with the hole walls during the frequent folding of the electric bicycle, causing wear on the wire sheath and thus affecting the conductivity of the wires.

[0006] Therefore, this solution provides a high-strength, non-spliced ​​main beam to address the aforementioned problems. Utility Model Content

[0007] The purpose of this invention is to provide a high-strength non-spliced ​​main beam to solve the problems of limited strength of spliced ​​main beams and lack of protection measures when wires pass through the main beam in the prior art.

[0008] To solve the above-mentioned technical problems, the basic technical solution proposed by this utility model is as follows:

[0009] A high-strength, non-splicing main beam includes a main beam mechanism and a wire protection mechanism. The wire protection mechanism is located inside the main beam mechanism, and a connecting wire passes through the inside of the wire protection mechanism. The main beam mechanism includes an integrated main beam connecting part, a main beam receiving part, a main beam insertion part, and a main beam mounting part. The wire protection mechanism includes a wire protection cylinder and arc-shaped rings at the upper and lower ends of the wire protection cylinder. The inner wall of the wire protection cylinder is embedded with evenly distributed balls, which are close to the outer wall of the connecting wire.

[0010] Preferably, the main beam mounting part is located at both ends below the main beam insertion part, and the main beam mounting part has a runway through groove extending from left to right.

[0011] Preferably, the top end of the main beam support is connected to the main beam connection part, the main beam support is located at both ends above the main beam insertion part, and the main beam support and the main beam connection part are inclined to one side at a 30-degree angle.

[0012] Preferably, the vertical part of the main beam support is provided with a quadrilateral through groove two, and the inclined part of the main beam support is provided with a quadrilateral through groove one.

[0013] Preferably, the main beam insertion part and the main beam connection part are respectively provided with a wire hole two and a wire hole one.

[0014] Preferably, the inner walls of both the upper and lower ends of the cable guard are fixedly connected with connecting rings, the inner side of the arc-shaped ring is fixedly connected with rubber rings, and the lower end of the rubber ring is fixedly connected with connecting rings.

[0015] Preferably, the upper and lower ends of the cable guard are fixedly connected to limit rings, and the inner side of each limit ring is movably connected to a rotating ring, which is fixedly connected to an arc-shaped ring.

[0016] Preferably, one end of the connecting wire is provided with a pedal mechanism, the other end of the connecting wire is provided with a handle mechanism, and a steering mechanism is provided below the handle mechanism.

[0017] The beneficial effects of this utility model are:

[0018] This utility model uses an integrated aluminum alloy material and a one-piece stretching process to manufacture the main beam mechanism, eliminating the weak points of welding / riveting in traditional spliced ​​main beams, improving overall strength and dimensional accuracy, and avoiding loosening, deformation or breakage caused by long-term load or impact.

[0019] This utility model features a wire protection mechanism with evenly distributed ball bearings embedded in the inner wall of the wire protection tube, which fits snugly against the outer wall of the connecting wire, reducing friction between the wire and the hole wall during folding. The upper and lower arc-shaped rings have built-in rubber rings, and the clamping and adjustment functions are achieved by rotating the rings. This not only makes it easy to fix the wire during assembly, but also lifts the wire during folding, preventing wear on the outer sheath and extending its service life. Attached Figure Description

[0020] Figure 1 This is an overall perspective view of Embodiment 1 of the present utility model;

[0021] Figure 2 This is a schematic diagram of the main beam mechanism in Embodiment 1 of this utility model;

[0022] Figure 3 This is a structural schematic diagram of the wire protection mechanism according to Embodiment 1 of this utility model.

[0023] Figure 4 This is an embodiment of the present utility model. Figure 3 Enlarged view of section A;

[0024] Figure 5 This is a schematic diagram of the structure of the main beam installed at the rear of an electric bicycle, which is one embodiment of this utility model.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Main beam mechanism; 11. Main beam insertion part; 12. Main beam installation part; 13. Main beam receiving part; 14. Main beam connection part; 15. Wire hole one; 16. Quadrilateral through groove one; 17. Quadrilateral through groove two; 18. Runway circular through groove; 19. Wire hole two;

[0027] 2. Wire protection mechanism; 21. Wire protection cylinder; 22. Ball bearing; 23. Connecting ring; 24. Limiting ring; 25. Arc-shaped ring; 26. Rotating ring; 27. Rubber ring;

[0028] 3. Pedal mechanism; 4. Steering mechanism; 5. Handlebar mechanism; 6. Connecting cable. Detailed Implementation

[0029] Please refer to the following. Figures 1 to 5 As shown, the technical solutions in the embodiments of this utility model are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0030] It should be noted that, in the embodiments of this utility model, the directions shown in the accompanying drawings shall prevail, such as front and back. Figure 1 For the sake of accuracy, the specific details should be as follows: Figure 1 The left side is the front. Figure 1 The right side is the rear; at the same time, as Figure 2 As shown, the horizontal direction is roughly defined as left and right, and the vertical direction is defined as up and down. If a specific orientation changes, the directional indication will also change accordingly.

[0031] This utility model provides a high-strength non-splicing beam, including a beam mechanism 1 and a wire protection mechanism 2. The wire protection mechanism 2 is disposed inside the beam mechanism 1, and a connecting wire 6 passes through the inside of the wire protection mechanism 2.

[0032] The main beam mechanism 1 includes an integrated main beam connecting part 14, a main beam receiving part 13, a main beam insertion part 11, and a main beam installation part 12;

[0033] The wire protection mechanism 2 includes a wire protection cylinder 21 and arc-shaped rings 25 at the upper and lower ends of the wire protection cylinder 21. The inner wall of the wire protection cylinder 21 is embedded with evenly distributed balls 22, which are close to the outer wall of the connecting wire 6.

[0034] Connecting wire 6 is the connecting wire for the three-section folding electric bicycle, used to connect the battery pack and the controller located at the handlebars of the three-section folding electric bicycle.

[0035] The entire outer perimeter of the main frame mechanism 1 is provided with screw holes for connecting electric bicycle accessories by bolts. The main frame mechanism 1 is manufactured by a one-piece stretching process using high-strength aluminum alloy.

[0036] In a further embodiment, the main beam mounting part 12 is located at both ends below the main beam insertion part 11, and the main beam mounting part 12 has a runway through groove 18 extending from left to right.

[0037] In this embodiment, the main beam mounting part 12 is used to connect with the inner frame of the pedal mechanism 3, and the runway circular groove 18 is a runway circular groove used to increase the rigidity of the main beam mounting part 12.

[0038] In a further embodiment, the top end of the main beam receiving part 13 is connected to the main beam connecting part 14. The main beam receiving part 13 is located at both ends above the main beam insertion part 11, and the main beam receiving part 13 and the main beam connecting part 14 are tilted to one side at a 30-degree angle.

[0039] In this embodiment, the main beam support part 13 and the main beam connection part 14 are a whole and their tilt angle toward the handle mechanism 5 is thirty degrees, which is used to match the natural standing posture of the human body, so that the pedal mechanism 3 can tilt forward about three degrees.

[0040] In a further embodiment, the vertical portion of the main beam receiving part 13 is provided with a quadrilateral through groove 2 17, and the inclined portion of the main beam receiving part 13 is provided with a quadrilateral through groove 16.

[0041] In this embodiment, when viewed from the side, part of the beam support portion 13 is perpendicular to the beam insertion portion 11, while another part is inclined inward at 45 degrees to connect with the beam connection portion 14; the opening of quadrilateral through slot one 16 and quadrilateral through slot two 17 makes the beam support portion 13 form a stress characteristic similar to that of an I-beam, thereby improving the bending / torsional stiffness.

[0042] In a further embodiment, the main beam insertion part 11 and the main beam connection part 14 are respectively provided with a second wire hole 19 and a first wire hole 15.

[0043] In this embodiment, the second threading hole 19 is connected to the hole in the pedal mechanism 3 so that the connecting wire 6 can pass through, while the first threading hole 15 is used to guide and limit the connecting wire 6.

[0044] In a further embodiment, connecting rings 23 are fixedly connected to the inner walls of both the upper and lower ends of the cable sleeve 21, and rubber rings 27 are fixedly connected to the inner side of the arc-shaped ring 25. The lower end of the rubber ring 27 is fixedly connected to the connecting ring 23.

[0045] In this embodiment, the arc-shaped ring 25 is made of rubber, so when the electric bicycle is folded, the part of the connecting wire 6 will be lifted by the arc-shaped ring 25 to cooperate with the ball bearing 22, thereby protecting the connecting wire 6 from wear.

[0046] In a further embodiment, both the upper and lower ends of the cable guard tube 21 are fixedly connected to limit rings 24, and the inner side of each limit ring 24 is movably connected to a rotating ring 26, which is fixedly connected to an arc-shaped ring 25.

[0047] In this embodiment, the arc ring 25, rotating ring 26, rubber ring 27, limiting ring 24 and wire guard 21 are coaxial, which allows the arc ring 25 to rotate. However, since a part of the rubber ring 27 is connected to the arc ring 25 and another part is connected to the connecting ring 23, the rubber ring 27 can be deformed when the arc ring 25 is rotated, thereby twisting and clamping the connecting wire 6 in the middle, which makes it easy to install during the first assembly.

[0048] In a further embodiment, one end of the connecting wire 6 is provided with a pedal mechanism 3, the other end of the connecting wire 6 is provided with a handle mechanism 5, and a steering mechanism 4 is provided below the handle mechanism 5.

[0049] In this embodiment, the pedal mechanism 3, steering mechanism 4, and handlebar mechanism 5 are three-section folding electric bicycles in the prior art, and the pedal mechanism 3 and steering mechanism 4 are connected to each other through the beam mechanism 1; the pedal mechanism 3 is the foot pedal part of the electric bicycle, and a rear wheel is provided at one end; the upper part of the steering mechanism 4 is connected to the handlebar mechanism 5 through a three-section connecting mechanism, so that the handlebar mechanism 5 can rotate downward around the connecting mechanism as the center to fold.

[0050] The working principle of this utility model is as follows:

[0051] The main beam mechanism 1 is manufactured as a whole using a high-strength aluminum alloy material through a one-piece stretching process. This results in better strength and dimensional accuracy compared to traditional spliced ​​main beams. It eliminates the need for cumbersome splicing and installation processes and maintains a seamless appearance. When the main beam mechanism 1 connects to the pedal mechanism 3 and steering mechanism 4 of the electric bicycle, the pressure at its upper end is transmitted sequentially from the main beam connection part 14, the main beam support part 13, the main beam insertion part 11, and the main beam mounting part 12 to the pedal mechanism 3. During the transmission process, the opening of the quadrilateral through groove 16, quadrilateral through groove 2 17, and the track circular through groove 18 can improve the bending / torsional stiffness, make it lighter, and allow airflow to pass through better, thereby reducing the temperature of the connecting wire 6 during operation.

[0052] When assembling an electric bicycle, the connecting wire 6 can be passed through the cable sleeve 21 first, and the arc ring 25 at the bottom of the cable sleeve 21 can be rotated to cause the rubber ring 27 to twist and deform, thereby clamping the connecting wire 6 in the middle. At this time, the cable sleeve 21 can be inserted into the wire hole 15, which facilitates assembly. After assembly, the arc ring 25 is released and the rubber ring 27 is reset. The outer edge of the connecting wire 6 will fit with the ball bearing 22 on the inner wall of the cable sleeve 21. Therefore, when the handlebar mechanism 5 of the electric bicycle is assembled and folded, the bending of the connecting wire 6 will only contact the ball bearing 22, while the connecting wire 6 outside the cable sleeve 21 will contact the arc ring 25. This not only facilitates assembly but also protects the service life of the connecting wire 6 when the bicycle is folded after assembly.

[0053] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A high-strength, non-spliced ​​main beam, comprising a main beam mechanism (1) and a wire guard mechanism (2), characterized in that, The wire protection mechanism (2) is located inside the beam mechanism (1), and a connecting wire (6) passes through the inside of the wire protection mechanism (2). The main beam mechanism (1) includes an integrated main beam connecting part (14), a main beam receiving part (13), a main beam insertion part (11), and a main beam installation part (12). The wire protection mechanism (2) includes a wire protection cylinder (21) and arc-shaped rings (25) at the upper and lower ends of the wire protection cylinder (21). The inner wall of the wire protection cylinder (21) is embedded with evenly distributed balls (22), and the balls (22) are close to the outer wall of the connecting wire (6).

2. The high-strength non-spliced ​​main beam according to claim 1, characterized in that: The main beam mounting part (12) is located at both ends below the main beam insertion part (11), and the main beam mounting part (12) has a runway through groove (18) that runs from left to right.

3. A high-strength, non-spliced ​​main beam according to claim 1, characterized in that: The top of the main beam receiving part (13) is connected to the main beam connecting part (14). The main beam receiving part (13) is located at both ends above the main beam insertion part (11). The main beam receiving part (13) and the main beam connecting part (14) are tilted to one side at a 30-degree angle.

4. A high-strength, non-spliced ​​main beam according to claim 1, characterized in that: The vertical part of the beam receiving part (13) is provided with a quadrilateral through groove two (17), and the inclined part of the beam receiving part (13) is provided with a quadrilateral through groove one (16).

5. A high-strength, non-spliced ​​main beam according to claim 1, characterized in that: The main beam insertion part (11) and the main beam connection part (14) are respectively provided with a second threading hole (19) and a first threading hole (15).

6. A high-strength, non-spliced ​​main beam according to claim 1, characterized in that: The inner walls of the upper and lower ends of the cable sleeve (21) are fixedly connected with connecting rings (23), and the inner side of the arc ring (25) is fixedly connected with rubber rings (27). The lower end of the rubber ring (27) is fixedly connected with connecting rings (23).

7. A high-strength, non-spliced ​​main beam according to claim 1, characterized in that: The upper and lower ends of the cable guard (21) are fixedly connected to limit rings (24), and the inner side of the limit rings (24) is movably connected to rotating rings (26), and the rotating rings (26) are fixedly connected to arc-shaped rings (25).

8. A high-strength, non-spliced ​​main beam according to claim 1, characterized in that: One end of the connecting wire (6) is provided with a pedal mechanism (3), the other end of the connecting wire (6) is provided with a handle mechanism (5), and a steering mechanism (4) is provided below the handle mechanism (5).

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