An integrated forged girder without a separate folder

Abstract

The utility model discloses an integrated forging girder without separate folder, which comprises a head tube, a support lug A fixedly connected to the outer side of one end of the head tube, a hinge hole A formed at the end of the support lug A away from the head tube, a folding girder, an assembly lug A fixedly connected to one end of the folding girder close to the support lug A, and the assembly lug A is hingedly connected to the inside of the hinge hole A through a folding pivot A, and a quick-mounting cylinder, a support lug B fixedly connected to the top end of the outer side of the quick-mounting cylinder, the utility model relates to the technical field of bicycle structure design and manufacturing, and has the advantages that the overall structural strength of the folding girder and the handlebar main body is improved, multi-component integration and lightweight are realized, the overall vehicle is given an integrated delicate appearance and stable folding function, and through the innovative structure of integrated forging without welding points, the stress concentration defects of traditional split welding folders are completely avoided, and the overall vehicle integration is broken through.

Description

Technical Field

[0001] This utility model relates to the field of bicycle structural design and manufacturing technology, specifically a one-piece forged frame without a separate folding mechanism. Background Technology

[0002] Folding bicycles are a type of bicycle where the front and rear wheels can be folded together via the frame and seat tube folding joints. When folded, the length is reduced by about 45%. This can be done manually without tools, with the seat post serving as a support point to keep it stable. Their main purpose is to make it easy for users to carry and store when they are not riding, making them an ideal choice for urban commuters, travelers, and users with limited living space.

[0003] However, in traditional bicycle technology, the frame is generally welded separately from the folding mechanism. This results in stress concentration at the weld points, redundant weight due to independent assembly of the folding mechanism, and manufacturing tolerance issues that can lead to imbalances such as "one part locked and another part loose," which seriously affect riding safety and folding reliability.

[0004] To address this issue, the present invention provides an integral forged beam without a separate folding mechanism. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an integral forged beam without a separate folding mechanism, thus solving the aforementioned problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an integral forged beam without a separate folding mechanism, comprising:

[0007] A head tube, wherein a support ear A is fixedly connected to the outer side of one end of the head tube, and a hinge hole A is provided at the end of the support ear A away from the head tube;

[0008] A folding beam, wherein an assembly ear A is fixedly connected to one end of the folding beam near the support ear A, and the assembly ear A is hinged inside the hinge hole A via a folding pivot A;

[0009] A quick-release tube, wherein a support lug B is fixedly connected to the top of the outer side of the quick-release tube, and a hinge hole B is provided at the end of the support lug B away from the quick-release tube.

[0010] The stem body has a mounting lug B fixedly connected to the bottom of its outer side. The end of the mounting lug B away from the stem body is fixedly connected to a folding pivot B, which is also hinged inside the hinge hole B.

[0011] A locking assembly is installed between the head tube and the folding beam, and between the quick-release tube and the stem body, to achieve locking of the head tube and the folding beam, and the quick-release tube and the stem body in the assembled state.

[0012] Preferably, the locking component includes:

[0013] Locking plate A is installed on the side of the folding beam away from the mounting ear A or the side of the quick-release tube away from the support ear B. Locking plate B is provided on the side of the head tube away from the support ear A or the side of the stem body away from the locking plate B. The middle of the side of the locking plate B and the bearing groove that are close to each other is provided with a bearing groove.

[0014] A locking disc is fixedly connected to the inside of the bearing groove at locking plate A, and a threaded hole is provided in the middle of the bearing groove;

[0015] A locking rod has an external threaded section on the outer side of one end. The locking rod is connected to the inside of a threaded hole through the external threaded section. A knob is fixedly connected to the end of the locking rod away from the external threaded section.

[0016] Preferably, the head tube, folding beam, and stem body are all hollow structures, and the head tube, folding beam, and stem body are all formed by forging.

[0017] Preferably, a notch is provided on one side of the quick-assembly cylinder, and two clamping blocks are fixedly connected to the side of the quick-assembly cylinder near the notch. The two clamping blocks are located on both sides of the notch, and a connecting member clearance hole is provided in the middle of each of the two clamping blocks.

[0018] Preferably, the head tube and the folding beam are provided with waist-shaped grooves on the side where they are close to each other, and the quick-release cylinder and the stem body are close to each other.

[0019] Preferably, a reinforcing block is sleeved on the outer side of the locking rod, the reinforcing block is C-shaped, and an anti-slip pad is fixedly connected to the inner side of the reinforcing block.

[0020] Beneficial effects

[0021] This invention provides a one-piece forged beam without a separate folding mechanism. Compared with the prior art, it has the following advantages:

[0022] This one-piece forged frame without a separate folding mechanism not only improves the overall structural strength of the folding frame and stem body, achieves multi-component integration and lightweighting, and gives the whole vehicle a refined integrated appearance and stable folding function, but also completely avoids the stress concentration defects of traditional split welded folding mechanisms through the innovative one-piece forged and weld-free structure, resulting in lightweighting and a breakthrough in the integration of the whole vehicle.

[0023] This one-piece forged frame without a separate folding mechanism, through the structural cooperation of locking plate A and locking plate B and the slotted design of waist-shaped groove, ensures locking accuracy and self-compensation of manufacturing tolerances, while also providing smooth folding operation and resistance to foreign object jamming. This significantly extends the lifespan of the bicycle and greatly improves the overall performance and market value of the product. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a folding diagram of the head tube and folding beam of this utility model;

[0026] Figure 3 This is a schematic diagram showing the separation of the head tube and the folding beam of this utility model;

[0027] Figure 4 This is a schematic diagram of the separation structure of the quick-release cylinder and the handlebar body of this utility model;

[0028] Figure 5 This is a schematic diagram of the structure of the quick-assembly cylinder of this utility model;

[0029] Figure 6 This is a schematic diagram of the assembly structure of the reinforcing block of this utility model.

[0030] In the diagram: 1. Head tube; 2. Support ear A; 3. Hinge hole A; 4. Folding beam; 5. Assembly ear A; 6. Folding pivot A; 7. Quick-release sleeve; 8. Support ear B; 9. Hinge hole B; 10. Stem body; 11. Assembly ear B; 12. Folding pivot B; 13. Locking plate A; 14. Locking plate B; 15. Bearing groove; 16. Locking disc; 17. Threaded hole; 18. Locking rod; 19. Reinforcing block; 20. Knob; 21. Notch; 22. Clamping block; 23. Connector clearance hole; 24. Waist-shaped groove. Detailed Implementation

[0031] 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.

[0032] Example 1:

[0033] Please see Figure 1-6 A one-piece forged beam without individual folding mechanisms, comprising:

[0034] The head tube 1 has a support ear A2 fixedly connected to the outer side of one end of the head tube 1, and a hinge hole A3 is opened at the end of the support ear A2 away from the head tube 1.

[0035] Folding beam 4, with a mounting ear A5 fixedly connected to one end of folding beam 4 near the support ear A2, and mounting ear A5 is hinged inside the hinge hole A3 via folding pivot A6.

[0036] The quick-release cylinder 7 has a support ear B8 fixedly connected to the top of its outer side, and a hinge hole B9 is provided at the end of the support ear B8 away from the quick-release cylinder 7.

[0037] The handlebar body 10 has a mounting ear B11 fixedly connected to the bottom of the outer side of the handlebar body 10. The end of the mounting ear B11 away from the handlebar body 10 is fixedly connected to a folding pivot B12, and the folding pivot B12 is also hinged inside the hinge hole B9.

[0038] The locking assembly is installed between the head tube 1 and the folding beam 4 and between the quick-release tube 7 and the stem body 10, and is used to lock the head tube 1 and the folding beam 4, as well as the quick-release tube 7 and the stem body 10 in the assembled state.

[0039] Please refer to Figure 1 In this embodiment, the head tube 1, the folding beam 4, and the stem body 10 are all hollow structures, and the head tube 1, the folding beam 4, and the stem body 10 are all formed by forging.

[0040] More specifically, the material of the folding beam 4 can be aluminum alloy. Through the material characteristics of the folding beam 4, the overall structural strength of the folding beam 4 can be improved, achieving component integration and lightweighting, while also giving the whole vehicle an integrated and exquisite appearance and stable folding function.

[0041] Furthermore, by using forging, the stress concentration defects of traditional split welding are completely avoided, making the whole lighter, significantly extending the lifespan of the bicycle, and significantly improving the overall performance and market value of the product.

[0042] Please refer to Figure 5 In this embodiment, waist-shaped grooves 24 are provided on the side where the head tube 1 and the folding beam 4 are close to each other, and on the side where the quick-release tube 7 and the stem body 10 are close to each other.

[0043] More specifically, the waist-shaped groove 24 can avoid the problem of "inconsistent locking opening and inability to lock precisely" caused by manufacturing tolerances and foreign objects on the bonding surface, ensuring that it can be locked stably after each fold.

[0044] Please refer to Figure 5In this embodiment, a notch 21 is provided on one side of the quick-assembly cylinder 7, and two clamping blocks 22 are fixedly connected to the side of the quick-assembly cylinder 7 near the notch 21. The two clamping blocks 22 are located on both sides of the notch 21, and a connecting member clearance hole 23 is provided in the middle of each of the two clamping blocks 22.

[0045] More specifically, the presence of notch 21 and clamping block 22 means that when assembling the quick-assembly cylinder 7, it is first placed in front of the head tube 1, then the bolt is passed through the two connecting clearance holes 23, and then the bolt is tightened to reduce the width of notch 21, so that the quick-assembly cylinder 7 is tightened and finally the quick-assembly cylinder 7 is locked in front of the head tube 1.

[0046] Example 2:

[0047] Please refer to Figures 3-6 This embodiment provides a technical solution based on Embodiment 1: In this embodiment, the locking component includes:

[0048] Locking plate A13 is installed on the side of the folding beam 4 away from the mounting ear A5 or the side of the quick-release tube 7 away from the support ear B8. Locking plate B14 is provided on the side of the head tube 1 away from the support ear A2 or the side of the stem body 10 away from the locking plate B14. The middle of the locking plate B14 and the bearing groove 15 are both provided with bearing groove 15 on the side close to each other.

[0049] The locking disc 16 is fixedly connected to the inside of the bearing groove 15 at the locking plate A13. A threaded hole 17 is provided in the middle of the bearing groove 15.

[0050] Locking rod 18, with an external thread section on the outer side of one end of locking rod 18, locking rod 18 is connected to the inside of threaded hole 17 through the external thread section, and a knob 20 is fixedly connected to the end of locking rod 18 away from the external thread section;

[0051] Please refer to Figures 1-5 In this embodiment, the bearing groove 15 is an arc-shaped structure. Due to the shape characteristics of the bearing groove 15, both the locking plate A13 and the locking plate B14 have space to accommodate the locking disc 16. When the locking plate A13 and the locking plate B14 are assembled together, the bearing groove 15 at the locking plate B14 can further support the locking disc 16. At the same time, it greatly enhances the torsional strength when the locking plate A13 and the locking plate B14 are assembled, and facilitates the subsequent assembly of the locking rod 18.

[0052] Please refer to Figure 3In this embodiment, the head tube 1 and the support ear A2, the head tube 1 and the locking plate B14, the folding beam 4 and the mounting ear A5, the folding beam 4 and the locking plate A13, the quick-release cylinder 7 and the locking plate A13, the quick-release cylinder 7 and the support ear B8, the stem body 10 and the mounting ear B11, and the stem body 10 and the locking plate B14 are all connected by rounded transitions to reduce sharp angles, enhance the overall structural strength, and prevent breakage.

[0053] Please refer to Figure 6 In this embodiment, a reinforcing block 19 is sleeved on the outer side of the locking rod 18. The reinforcing block 19 is C-shaped, and an anti-slip pad is fixedly connected to the inner side of the reinforcing block 19.

[0054] More specifically, by setting the reinforcing block 19, when the external threaded section at the locking rod 18 is screwed into the threaded hole 17, the reinforcing block 19 will gradually move closer to the locking plates A13 and B14, and restrict the ends of the locking plates A13 and B14 to the inside of the reinforcing block 19, such as... Figure 5 As shown;

[0055] Furthermore, the anti-slip pads greatly enhance the friction between locking plate A13, locking plate B14, and reinforcing block 19, preventing uncontrollable movement of locking plate A13 and locking plate B14 and thus ensuring the locking effect of reinforcing block 19.

[0056] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0057] Working principle: First, the quick-release sleeve 7 is placed in front of the head tube 1. Then, a bolt is placed between the two connecting clearance holes 23. The distance between the two notches 21 is reduced by tightening the bolt until the quick-release sleeve 7 is tightly held on the head tube 1, thus forming the positioning of the quick-release sleeve 7.

[0058] Pulling the folding beam 4 causes it to rotate under the support of the folding pivot A6 and the hinge hole A3 until the locking plate A13 and the locking plate B14 are engaged. Then, the locking rod 18 is screwed into the threaded hole 17, and the reinforcing block 19 is moved closer to the locking plate A13 and the locking plate B14 to limit the ends of the locking plate A13 and the locking plate B14 to the inside of the reinforcing block 19. Finally, by limiting the locking plate A13 and the locking plate B14, the rotation of the folding beam 4 is prevented.

[0059] Similarly, the stem body 10 can be pulled to rotate under the support of the support ear B8 and the folding pivot B12 until the locking plate A13 and the locking plate B14 are engaged. Then, the locking rod 18 is screwed into the threaded hole 17, and the reinforcing block 19 is moved closer to the locking plate A13 and the locking plate B14 to limit the ends of the locking plate A13 and the locking plate B14 to the inside of the reinforcing block 19. Finally, by limiting the locking plate A13 and the locking plate B14, the rotation of the stem body 10 is prevented.

[0060] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0061] 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 one-piece forged beam without a separate folding mechanism, characterized in that: include: A head tube (1) is fixedly connected to a support ear A (2) on the outer side of one end of the head tube (1), and a hinge hole A (3) is opened at the end of the support ear A (2) away from the head tube (1); Folding beam (4), the end of the folding beam (4) near the support ear A (2) is fixedly connected to the mounting ear A (5), and the mounting ear A (5) is hinged to the inside of the hinge hole A (3) through the folding pivot A (6); The quick-release cylinder (7) has a support ear B (8) fixedly connected to the top of its outer side, and a hinge hole B (9) is provided at the end of the support ear B (8) away from the quick-release cylinder (7). The handlebar body (10) has a mounting ear B (11) fixedly connected to the bottom of the outer side of the handlebar body (10). The mounting ear B (11) is fixedly connected to a folding pivot B (12) at the end away from the handlebar body (10), and the folding pivot B (12) is also hinged inside the hinge hole B (9). A locking assembly is installed between the head tube (1) and the folding beam (4) and between the quick-release tube (7) and the stem body (10) to achieve locking of the head tube (1) and the folding beam (4) and the quick-release tube (7) and the stem body (10) in the assembled state.

2. The integral forged beam without a separate folding mechanism according to claim 1, characterized in that: The locking component includes: Locking plate A (13) is mounted on the side of the folding beam (4) away from the mounting ear A (5) or the side of the quick-release tube (7) away from the support ear B (8). Locking plate B (14) is provided on the side of the head tube (1) away from the support ear A (2) or the side of the stem body (10) away from the locking plate B (14). The middle of the locking plate B (14) and the bearing groove (15) are both provided with bearing grooves (15) on the side close to each other. The locking disc (16) is fixedly connected to the inside of the bearing groove (15) at the locking plate A (13), and the bearing groove (15) has a threaded hole (17) in the middle. A locking rod (18) has an external thread section on the outer side of one end. The locking rod (18) is connected to the inside of the threaded hole (17) through the external thread section. A knob (20) is fixedly connected to the end of the locking rod (18) away from the external thread section.

3. The integral forged beam without a separate folding mechanism according to claim 1, characterized in that: The head tube (1), folding beam (4) and stem body (10) are all hollow structures, and the head tube (1), folding beam (4) and stem body (10) are all formed by forging.

4. The integral forged beam without a separate folding mechanism according to claim 1, characterized in that: The quick-release cylinder (7) has a notch (21) on one side. Two clamping blocks (22) are fixedly connected to the side of the quick-release cylinder (7) near the notch (21). The two clamping blocks (22) are located on both sides of the notch (21). A connecting member clearance hole (23) is provided in the middle of each of the two clamping blocks (22).

5. The integral forged beam without a separate folding mechanism according to claim 1, characterized in that: Waist-shaped grooves (24) are provided on the side where the head tube (1) and the folding beam (4) are close to each other, and on the side where the quick-release cylinder (7) and the stem body (10) are close to each other.

6. The integral forged beam without a separate folding mechanism according to claim 2, characterized in that: The locking rod (18) is fitted with a reinforcing block (19) on its outer side. The reinforcing block (19) is C-shaped, and an anti-slip pad is fixedly connected to the inner side of the reinforcing block (19).

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