A folding vehicle

Abstract

The utility model belongs to the technical field of folding bicycle, disclose a kind of folding bicycle, folding bicycle includes vehicle body, sprocket assembly, saddle assembly, connecting rod and tension rod, vehicle body is foldable structure, sprocket assembly is installed on vehicle body, sprocket assembly includes front sprocket, chain and rear sprocket, saddle assembly slidingly is arranged in vehicle body, one end of connecting rod is rotatably connected with vehicle body, and the other end is rotatably connected with saddle assembly, and tension rod is installed in connecting rod, the lower end of saddle assembly contacts external support surface when vehicle body is in folding state, and tension rod is stopped on chain to tension chain.The utility model discloses folding bicycle only uses one tension rod installed on the connecting rod connected with vehicle body to realize the tensioning effect of chain, simple structure, convenient operation, both beneficial to reduce the weight of folding bicycle, also beneficial to reduce the manufacturing cost of folding bicycle.

Description

Technical Field

[0001] This utility model relates to the field of folding bicycle technology, and in particular to a folding bicycle. Background Technology

[0002] Traditional folding bikes typically fold directly without considering the chain tension, posing a significant risk of chain slippage and impacting the user experience. To address this issue, existing technologies often incorporate a tensioner on the frame to ensure the chain remains taut when the bike is folded. However, these tensioners are often too large, affecting weight and size, and their complex structure increases manufacturing costs. Utility Model Content

[0003] The purpose of this invention is to provide a folding bicycle with a simple and lightweight tension bar to ensure that the chain remains taut after the bicycle is folded.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] This utility model discloses a folding bicycle, comprising: a bicycle body, the bicycle body having a foldable structure; a sprocket assembly, the sprocket assembly being mounted on the bicycle body, the sprocket assembly including a front sprocket, a chain, and a rear sprocket; a seat assembly, the seat assembly being slidably disposed on the bicycle body; a connecting rod, one end of the connecting rod being rotatably connected to the bicycle body, and the other end being rotatably connected to the seat assembly; and a tensioning rod, the tensioning rod being mounted on the connecting rod. When the bicycle body is in a folded state, the lower end of the seat assembly contacts an external support surface, and the tensioning rod abuts against the chain to tension the chain.

[0006] In some embodiments, the first end of the tensioning rod is provided with a tensioning portion, the tensioning portion having a mating surface, the shape of the mating surface matching the formation of the concave surface of the chain link, and when the mating surface abuts against the concave surface, the tensioning portion can tension the chain.

[0007] In some specific embodiments, the mating surface is provided with anti-slip texture.

[0008] In some embodiments, the connecting rod is provided with a mounting portion, the extension direction of the mounting portion is set at an angle to the front-rear direction of the vehicle body, and the second end of the tensioning rod is detachably connected to the mounting portion.

[0009] In some specific embodiments, one of the mounting part and the tensioning rod is provided with a threaded hole, and the other of the mounting part and the tensioning rod is provided with a threaded section, which is threadedly engaged with the threaded hole.

[0010] In some specific embodiments, one of the mounting part and the tensioning rod is provided with a locking protrusion, and the other of the mounting part and the tensioning rod is provided with a locking hole, and the locking protrusion engages with the locking hole.

[0011] In some specific embodiments, the second end of the tensioning rod is provided with a mating part and a stop part. The mating part is provided with a threaded section or a locking protrusion to achieve a detachable connection with the mounting part, and the stop part abuts against the end face of the mounting part.

[0012] In some embodiments, the seat assembly includes a seat body, a support tube, and a support wheel. The seat body is mounted above the support tube, and a clamp is provided below the support tube. The clamp is used to mount the support wheel and is rotatably connected to the connecting rod. When the vehicle body is in a folded state, the support wheel abuts against the external support surface.

[0013] In some specific embodiments, one end of the clamp is provided with a first adapter, and the other end of the connecting rod is provided with a second adapter, and the first adapter and the second adapter are rotatably connected by a rotating pin.

[0014] In some specific embodiments, the clamp has a rotating shaft on each of its opposite sides, one of the rotating shaft and the support wheel has a rotating shaft hole, and the other of the rotating shaft and the support wheel has a rotating shaft that mates with the rotating shaft hole.

[0015] The beneficial effects of this folding bicycle are as follows: When the bicycle is in the unfolded state, the seat assembly is locked to the bicycle body, the lower end of the seat assembly does not touch the ground, and the tension rod is separated from the chain, which does not affect the movement of the sprocket assembly. During the folding process, the seat assembly slides downward relative to the bicycle body, and the lower end of the seat assembly can touch the ground. As the seat assembly moves downward, it drives the connecting rod to rotate, causing the tension rod to swing towards the chain and stop against the chain. When the tension rod stops against the chain, it can apply pressure to the chain to keep it in a tensioned state, thus preventing the chain from easily falling off after the bicycle body is folded. The folding bicycle disclosed in this utility model only uses a tension rod installed on the connecting rod connected to the bicycle body to achieve the tensioning effect of the chain. The structure is simple and easy to operate, which is beneficial to reducing the weight of the folding bicycle and reducing the manufacturing cost of the folding bicycle.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of the folding vehicle body in the unfolded state according to an embodiment of the present utility model;

[0018] Figure 2 This is a structural schematic diagram of the folding vehicle body in a folded state according to an embodiment of the present invention;

[0019] Figure 3 yes Figure 2 A magnified diagram showing point A (circled).

[0020] Figure 4 This is a schematic diagram of the tensioning rod according to an embodiment of the present invention.

[0021] Figure label:

[0022] 100. Vehicle body; 200. Sprocket assembly; 210. Front sprocket; 220. Chain; 230. Rear sprocket; 300. Seat assembly; 310. Seat body; 320. Support tube; 330. Support wheel; 340. Clamp; 341. First adapter; 342. Rotating shaft; 400. Connecting rod; 410. Mounting part; 420. Second adapter; 500. Tensioning rod; 510. Tensioning part; 511. Mating surface; 5111. Anti-slip texture; 520. Mating part; 530. Stop part; 600. Rotating shaft. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0024] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between 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.

[0025] In the description of this embodiment, the terms "upper," "lower," "left," "right," "front," and "rear," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0026] This utility model discloses a folding bicycle, see reference. Figures 1-3 As shown, the vehicle includes a body 100, a sprocket assembly 200, a seat assembly 300, a connecting rod 400, and a tension rod 500. The body 100 is a foldable structure. The sprocket assembly 200 is mounted on the body 100 and includes a front sprocket 210, a chain 220, and a rear sprocket 230. The seat assembly 300 is slidably inserted through the body 100. One end of the connecting rod 400 is rotatably connected to the body 100, and the other end is rotatably connected to the seat assembly 300. The tension rod 500 is mounted on the connecting rod 400. When the body 100 is in the folded state, the lower end of the seat assembly 300 contacts the external support surface, and the tension rod 500 abuts against the chain 220 to tension the chain 220. It can be understood that when the body 100 is in the unfolded state... Figure 1 In the state shown, the seat assembly 300 is locked onto the frame 100, the lower end of the seat assembly 300 does not touch the ground, and the tension rod 500 is separated from the chain 220, which does not affect the movement of the sprocket assembly 200. However, during the folding process of the frame 100, the seat assembly 300 slides downward relative to the frame 100, and the lower end of the seat assembly 300 can touch the ground. Figure 2 As shown in the diagram, during the downward movement of the seat assembly 300, the connecting rod 400 rotates, causing the tension rod 500 to swing towards the chain 220 and stop against the chain 220. When the tension rod 500 stops against the chain 220, it can apply pressure to the chain 220 to keep it in a tensioned state, thus preventing the chain 220 from easily falling off after the vehicle body 100 is folded. The folding bicycle disclosed in this utility model only uses a tension rod 500 installed on the connecting rod 400 connected to the vehicle body 100 to achieve the tensioning effect on the chain 220. The structure is simple and easy to operate, which is beneficial to reducing the weight of the folding bicycle and reducing the manufacturing cost of the folding bicycle.

[0027] It should be noted that the folding method of the vehicle body 100 can adopt any of the existing technologies according to actual needs, and there are no restrictions on the foldable structure of the vehicle body 100.

[0028] refer to Figure 3 As shown, the first end of the tensioning rod 500 is provided with a tensioning part 510, which has a mating surface 511. The shape of the mating surface 511 matches the concave surface of the chain link 220. When the mating surface 511 abuts against the concave surface, the tensioning part 510 can tension the chain 220. It can be understood that by providing the mating surface 511 on the tensioning part 510, and by matching the shape of the mating surface 511 with the concave surface of the chain link 220, when the tensioning rod 500 abuts against the chain 220, the mating surface 511 can tightly adhere to the concave surface of the chain link, thereby ensuring the tensioning effect on the chain 220.

[0029] Optionally, the mating surface 511 is provided with an anti-slip texture 5111. It is understood that providing an anti-slip texture 5111 on the mating surface 511 can increase the friction between the mating surface 511 and the concave surface, reducing the probability of slippage of the chain 220 relative to the tensioning part 510, and ensuring the tensioning effect of the tensioning part 510 on the chain 220. It should be further noted that in the embodiments of this utility model, the anti-slip texture 5111 can be designed in any form according to actual needs. For example, the mating surface 511 may have multiple truncated pyramidal protrusions, which together constitute the anti-slip texture 5111; or the mating surface 511 may have multiple wave grooves, which together constitute the anti-slip texture 5111.

[0030] Optional, see reference Figures 3-4 As shown, the connecting rod 400 is provided with a mounting part 410. The extension direction of the mounting part 410 is set at an angle to the front-rear direction of the vehicle body 100. The second end of the tension rod 500 is detachably connected to the mounting part 410. It can be understood that detachably mounting the tension rod 500 to the mounting part 410 facilitates replacement when the tension rod 500 is damaged. On the other hand, according to the user's needs, different materials or different sizes of tension rods 500 can be selectively installed to meet personalized requirements.

[0031] Optional, see reference Figures 3-4 As shown, the mounting part 410 has a threaded hole, and the tensioning rod 500 has a threaded section, which engages with the threaded hole. It can be understood that the mounting part 410 and the tensioning rod 500 are connected through the threaded section and the threaded hole. This simplifies assembly, making it easier for users to install and replace the tensioning rod 500. It also improves the connection stability between the tensioning rod 500 and the mounting part 410, ensuring the installation stability of the tensioning rod 500 and thus enhancing its tensioning effect on the chain 220. It should be noted that in other embodiments of this invention, the mounting part 410 has a threaded section, and the tensioning rod 500 has a threaded hole.

[0032] In alternative embodiments of this invention, one of the mounting part 410 and the tensioning rod 500 has a locking protrusion, and the other of the mounting part 410 and the tensioning rod 500 has a locking hole, with the locking protrusion engaging with the locking hole. Specifically, in one embodiment, the mounting part 410 has a locking protrusion, and the tensioning rod 500 has a locking hole; in another embodiment, the mounting part 410 has a locking hole, and the tensioning rod 500 has a locking protrusion. It is understood that the mounting part 410 and the tensioning rod 500 are connected through the locking protrusion and the locking hole. This simplifies assembly, making it easier for users to install and replace the tensioning rod 500. It also improves the connection stability between the tensioning rod 500 and the mounting part 410, ensuring the installation stability of the tensioning rod 500 and thus enhancing the tensioning effect of the tensioning rod 500 on the chain 220. It should be noted that the shapes of the locking protrusion and the locking hole can be selected according to actual needs, and no specific shape or structural parameters of the locking hole and the locking protrusion are limited here.

[0033] Optional, see reference Figures 3-4 As shown, the second end of the tensioning rod 500 is provided with a mating part 520 and a stop part 530. The mating part 520 has a threaded section or a retaining protrusion to achieve a detachable connection with the mounting part 410. The stop part 530 abuts against the end face of the mounting part 410. It can be understood that in the actual installation process, the threaded section or retaining protrusion on the mating part 520 needs to be mated with the mounting part 410. During the installation process, when the stop part 530 abuts against the end face of the mounting part 410, it means that the tensioning rod 500 is installed in place, which facilitates the user's installation of the tensioning rod 500 and avoids the phenomenon of stripping of the threaded section or deformation of the retaining protrusion caused by excessive rotation of the tensioning rod 500.

[0034] refer to Figures 1-2 The seat assembly 300 includes a seat body 310, a support tube 320, and support wheels 330. The seat body 310 is mounted above the support tube 320. A clamp 340 is located below the support tube 320, which is used to mount the support wheels 330 and is rotatably connected to the connecting rod 400. When the vehicle body 100 is in a folded state, the support wheels 330 abut against the external support surface. It is understood that during the folding process of the vehicle body 100, the seat assembly 300 slides downward relative to the vehicle body 100, and the lower end of the seat assembly 300 can contact the ground. Since the seat assembly 300 includes the seat body 310, support tube 320, and support wheels 330 arranged from top to bottom, and the support wheels 330 can contact the ground after the vehicle body 100 is folded, the user can easily push the folded vehicle body 100 to move, facilitating storage and improving user satisfaction.

[0035] refer to Figure 3As shown, one end of the clamp 340 is provided with a first adapter 341, and the other end of the connecting rod 400 is provided with a second adapter 420. The first adapter 341 and the second adapter 420 are rotatably connected by a rotating pin. Understandably, in actual installation, it is only necessary to align the first adapter 341 and the second adapter 420, and then insert the rotating pin into the pin holes on the first adapter 341 and the second adapter 420. The operation is very convenient, and the connection stability is also high. Optionally, the second adapter 420 has a slot, and one end of the first adapter 341 is inserted into the slot. This improves the connection stability between the connecting rod 400 and the clamp 340.

[0036] refer to Figure 3 As shown, the clamp 340 has rotating shaft portions 342 on both opposite sides, each with a rotating shaft hole. A rotating shaft 600 mates with the rotating shaft hole in the support wheel 330. Understandably, during actual installation, simply inserting the rotating shaft 600 of the support wheel 330 into the rotating shaft hole completes the installation of the support wheel 330. Installation and disassembly are convenient, improving user satisfaction. Optionally, the rotating shaft 600 includes a bolt. This facilitates connection and allows the support wheel 330 to be locked relative to the clamp 340 by tightening the bolt, preventing rotation of the support wheel 330 during riding. Of course, in other embodiments of this invention, the rotating shaft portion 342 has a rotating shaft 600, and the support wheel 330 has a rotating shaft hole that mates with the rotating shaft 600.

[0037] In the description of this specification, references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0038] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A folding bicycle, characterized in that, include: The vehicle body (100) is a foldable structure; A sprocket assembly (200) is mounted on the vehicle body (100), and the sprocket assembly (200) includes a front sprocket (210), a chain (220) and a rear sprocket (230); A seat assembly (300) is slidably disposed on the vehicle body (100); Linkage (400), one end of which is rotatably connected to the vehicle body (100) and the other end of which is rotatably connected to the seat assembly (300); Tensioning rod (500) is mounted on the connecting rod (400). When the vehicle body (100) is in a folded state, the lower end of the seat assembly (300) contacts the external support surface, and the tensioning rod (500) abuts against the chain (220) to tension the chain (220).

2. The folding bicycle according to claim 1, characterized in that, The first end of the tensioning rod (500) is provided with a tensioning part (510), the tensioning part (510) has a mating surface (511), the shape of the mating surface (511) matches the formation of the concave surface of the chain link (220), when the mating surface (511) abuts against the concave surface, the tensioning part (510) can tension the chain (220).

3. The folding vehicle according to claim 2, characterized in that, The mating surface (511) is provided with anti-slip texture (5111).

4. The folding bicycle according to claim 1, characterized in that, The connecting rod (400) is provided with a mounting part (410), the extension direction of the mounting part (410) is set at an angle to the front and rear direction of the vehicle body (100), and the second end of the tensioning rod (500) is detachably connected to the mounting part (410).

5. The folding bicycle according to claim 4, characterized in that, One of the mounting part (410) and the tensioning rod (500) is provided with a threaded hole, and the other of the mounting part (410) and the tensioning rod (500) is provided with a threaded section, which is threadedly engaged with the threaded hole.

6. The folding bicycle according to claim 4, characterized in that, One of the mounting part (410) and the tensioning rod (500) is provided with a locking protrusion, and the other of the mounting part (410) and the tensioning rod (500) is provided with a locking hole, and the locking protrusion engages with the locking hole.

7. The folding bicycle according to claim 4, characterized in that, The second end of the tensioning rod (500) is provided with a mating part (520) and a stop part (530). The mating part (520) is provided with a threaded section or a locking protrusion to achieve a detachable connection with the mounting part (410). The stop part (530) abuts against the end face of the mounting part (410).

8. The folding bicycle according to any one of claims 1-7, characterized in that, The seat assembly (300) includes a seat body (310), a support tube (320), and a support wheel (330). The seat body (310) is installed above the support tube (320). A clamp (340) is provided below the support tube (320). The clamp (340) is used to install the support wheel (330) and is rotatably connected to the connecting rod (400). When the vehicle body (100) is in a folded state, the support wheel (330) abuts against the external support surface.

9. The folding vehicle according to claim 8, characterized in that, One end of the clamp (340) is provided with a first adapter (341), and the other end of the connecting rod (400) is provided with a second adapter (420). The first adapter (341) and the second adapter (420) are rotatably connected by a rotating pin.

10. The folding vehicle according to claim 8, characterized in that, The clamp (340) has a rotating shaft (342) on each side opposite to it. One of the rotating shaft (342) and the support wheel (330) has a rotating shaft hole, and the other of the rotating shaft (342) and the support wheel (330) has a rotating shaft (600) that cooperates with the rotating shaft hole.

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