Folding frames and folding bicycles

Abstract

This utility model relates to a folding frame and a folding bicycle, comprising: a stem assembly; a folding mechanism including a first connector and a second connector, the first connector and the second connector being rotatably connected to switch between a folded state and a closed state; an upper beam and a lower beam, the upper beam comprising a first section and a second section, and the lower beam comprising a third section and a fourth section; one end of each of the second and fourth sections is connected to the stem assembly, and the other end of each is connected to the second connector; one end of each of the first and third sections is connected to the first connector; the second section is spaced above the fourth section, and the end of the first section connected to the first connector is spaced above the third section; one of the upper and lower beams is a main beam, and the other is a reinforcing beam, and the end of the first and third sections that is a reinforcing beam, away from the first connector, is connected to the other. Both the upper and lower beams are connected to the same folding mechanism, thus requiring only one folding mechanism to operate during folding and unfolding, making folding and unfolding convenient.

Description

Technical Field

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

[0002] Bicycles, also known as pedal bikes or bicycles, are typically two-wheeled land vehicles. They serve not only as an environmentally friendly means of transportation for getting around, but also as fitness equipment for exercise and outings, making them an important tool for daily life. Folding bicycles, in particular, are small and easy to store when folded, and are widely used in everyday life.

[0003] Folding bicycles include single-beam folding bikes and double-beam folding bikes. Single-beam folding bikes are easy to fold and unfold, but due to the single beam support, they suffer from insufficient frame rigidity and strength. Double-beam folding bikes can improve upon the insufficient frame rigidity and strength of single-beam folding bikes, but they require two folding levers, and both folding and unfolding require operating the two levers, making folding and unfolding less convenient. Utility Model Content

[0004] Therefore, it is necessary to provide a folding frame and folding bicycle that can improve upon the aforementioned problems.

[0005] A folding bicycle frame, comprising:

[0006] Riser assembly;

[0007] The folding device includes a first connector and a second connector, wherein the first connector and the second connector are rotatably connected;

[0008] The upper beam includes a first section and a second section, and the lower beam includes a third section and a fourth section; one end of the second section and the fourth section are both connected to the riser assembly, and the other end of the second section and the fourth section are both connected to the second connector; one end of the first section and the third section are both connected to the first connector.

[0009] The second segment is spaced above the fourth segment, and the end of the first segment connected to the first connector is spaced above the third segment.

[0010] One of the upper beam and the lower beam is a main beam, and the other is a reinforcing beam. The end of the first segment and the third segment that belongs to the reinforcing beam is connected to the other one away from the first joint.

[0011] In one embodiment, the first connector has a first upper section and a first lower section connected to each other, wherein the upper section of the first section and the lower section of the third section are connected to the first upper section, and the lower section is connected to the first lower section.

[0012] and / or

[0013] The second connector has a second upper section and a second lower section that are connected to each other. The upper section of the second section and the lower section of the fourth section are connected to the second upper section, and the lower section is connected to the second lower section.

[0014] In one embodiment, the first upper segment and the first lower segment are integrally formed;

[0015] and / or

[0016] The second upper section and the second lower section are integrally formed.

[0017] In one embodiment, the upper beam and / or the lower beam, when unfolded, are straight beams extending in a straight line.

[0018] In one embodiment, the riser assembly includes a riser, a bottom bracket, and a rear fork, the rear fork including a vertical fork, and both the rear fork and the bottom bracket are connected to the riser; the second segment is connected to the riser and / or the vertical fork, and the fourth segment is connected to the riser and / or the bottom bracket;

[0019] and / or

[0020] The riser assembly includes a riser, a central motor bracket, and a rear fork. The rear fork includes a vertical fork, and both the rear fork and the central motor bracket are connected to the riser. The second segment is connected to the riser and / or the vertical fork, and the fourth segment is connected to the riser and / or the central motor bracket.

[0021] In one embodiment, the folder further includes a locking assembly connected to the first connector and / or the second connector to lock or unlock the first connector and the second connector when the first connector and the second connector are in a closed state.

[0022] In one embodiment, the locking assembly includes:

[0023] A guide block is disposed on one of the first connector and the second connector;

[0024] A connected screw and a locking block, wherein the screw passes through the guide block axially, and the locking block is screwed to the screw; both the first joint and the second joint are provided with locking parts that cooperate with the locking block;

[0025] The screw is operably rotatable relative to the guide block in the circumferential direction, and the locking block moves axially along the screw under the limiting action of the joint, so as to lock the first joint and the second joint in the closed state by engaging with the locking part in a concave-convex fit.

[0026] In one embodiment, the locking assembly further includes a pre-locking spring sleeved outside the screw, disposed axially between the guide block and the locking block, wherein the locking block abuts against the connector axially under the action of the pre-locking spring;

[0027] When the first connector and the second connector switch from the separated state to the closed state, the other connector presses against the locking block, causing the screw to move axially relative to the guide block, and the pre-locking spring elastically deforms; when the first connector and the second connector are in the closed state, the pre-locking spring returns to its original position, and the locking block pre-locks the first connector and the second connector.

[0028] and / or

[0029] The locking assembly also includes an anti-loosening spring, which is sleeved on the screw to press the locking block.

[0030] In one embodiment, the locking assembly further includes a handle connected to the screw.

[0031] A folding bicycle, comprising a folding frame as described above.

[0032] The aforementioned folding frame and folding bicycle include not only a top beam but also a bottom beam, which together ensure the rigidity and strength of the folding frame. Furthermore, the first and second sections of the top beam are connected to the first and second connectors of the folding mechanism, respectively, while the third and fourth sections of the bottom beam are connected to the first and second connectors of the folding mechanism, respectively. This means that both the top and bottom beams are connected to the same folding mechanism, allowing for convenient folding and unfolding with just one device. Additionally, the second and fourth sections do not overlap, and the ends of the first and third sections connected to the first connector do not overlap, while the other ends overlap. This not only saves materials but also improves the rigidity and strength of the folding frame. Attached Figure Description

[0033] Figure 1 A structural diagram of a folding frame in the unfolded state according to an embodiment of this application;

[0034] Figure 2 for Figure 1 Another structural view of the folding frame shown;

[0035] Figure 3 for Figure 1 The diagram shows the structure of the folding frame when it is folded.

[0036] Figure 4 for Figure 3 The diagram shows a structural view of the folding frame from another perspective.

[0037] Figure 5 for Figure 4 Enlarged view of point A on the folding frame shown;

[0038] Figure 6 A structural diagram of the folding mechanism used in a folding frame provided in another embodiment of this application;

[0039] Figure 7 A structural diagram of the folding device used in a folding frame provided in another embodiment of this application;

[0040] Figure 8 This is a structural diagram of a folding frame in its unfolded state, according to another embodiment of this application.

[0041] Explanation of reference numerals in the attached figures:

[0042] 100. Folding frame; 10. Stem tube assembly; 11. Stem tube; 12. Bottom bracket; 13. Rear fork; 131. Vertical fork; 14. Central motor bracket; 20. Folding mechanism; 21. First connector; 211. First upper section; 212. First lower section; 22. Second connector; 221. Second upper section; 222. Second lower section; 23. Guide block; 24. Locking block; 25. Screw; 26. Locking part; 27. Receiving groove; 28. Pre-locking spring; 29. ​​Anti-loosening spring; 210. Handle; 220. Boss; 230. Adjusting nut; 30. Top beam; 31. First section; 32. Second section; 40. Bottom beam; 41. Third section; 42. Fourth section; 50. Head tube. Detailed Implementation

[0043] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0044] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0045] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0046] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0047] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0048] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0049] See Figure 1 and Figure 2 One embodiment of this application provides a folding frame 100, which includes a riser assembly 10 for connecting to a seat.

[0050] See Figures 1-3 The folding frame 100 also includes a folding mechanism 20, an upper beam 30, and a lower beam 40. The upper beam 30 is located above the lower beam 40. The folding mechanism 20 includes a first connector 21 and a second connector 22, which are rotatably connected to each other to switch between a disengaged state and a folded state. When the folding mechanism 20 is in the disengaged state, the folding frame 100 can be folded; when the folding mechanism 20 is in the folded state, the folding frame 100 can be unfolded. The upper beam 30 includes a first section 31 and a second section 32, and the lower beam 40 includes a third section 41 and a fourth section 42. One end of each of the second section 32 and the fourth section 42 is connected to the riser assembly 10, and the other end is connected to the second connector 22. One end of each of the first section 31 and the third section 41 is connected to the first connector 21. That is, the first segment 31 and the second segment 32 of the upper beam 30 are connected by the first joint 21 and the second joint 22, and the third segment 41 and the fourth segment 42 of the lower beam 40 are also connected by the first joint 21 and the second joint 22. Among them, the second segment 32 is positioned above the fourth segment 42 at an interval, and the end of the first segment 31 connected to the first joint 21 is positioned above the third segment 41 at an interval.

[0051] When the folding frame 100 is in the unfolded state, the first section 31 is in front of the second section 32, the third section 41 is in front of the fourth section 42, and the first joint 21 is in front of the second joint 22.

[0052] It should be noted that the terms "up," "down," "left," "right," "front," and "back" mentioned in this text refer to directions defined from the rider's perspective when riding a folding bicycle including the folding frame 100. As can be seen, when the folding frame 100 is in the unfolded state, the first section 31 of the upper beam 30 is positioned forward relative to the second section 32, the third section 41 of the lower beam 40 is positioned forward relative to the fourth section 42, and the first joint 21 is positioned forward relative to the second joint 22. Figure 1The X direction is the front-to-back direction, the Y direction is the left-to-right direction, and the Z direction is the up-to-down direction.

[0053] It should also be noted here that, see Figure 1 The fact that the second segment 32 is positioned above the fourth segment 42 means that there are gaps between the second segment 32 and the fourth segment 42 in the vertical direction, i.e., there is no overlap between the second segment 32 and the fourth segment 42. Therefore, the second segment 32 and the fourth segment 42 are not directly connected, but indirectly connected through the second connector 22. The fact that one end of the first segment 31 and the third segment 41 is connected to the first connector 21 means that there are gaps between the ends of the first segment 31 and the third segment 41 connected to the first connector 21 in the vertical direction, i.e., there is no overlap between the ends of the first segment 31 and the third segment 41 connected to the first connector 21. Therefore, the ends of the first segment 31 and the third segment 41 near the first connector 21 are not directly connected, but connected through the first connector 21.

[0054] Furthermore, one of the upper beam 30 and the lower beam 40 is a main beam, and the other is a reinforcing beam. The folding frame 100 also includes a head tube 50, with the end of the main beam away from the riser assembly 10 connected to the head tube 50. The end of the first segment 31 and the third segment 41 that is a reinforcing beam, away from the first joint 21, is connected to the other. That is, the end of the first segment 31 and the third segment 41 that is a reinforcing beam, away from the first joint 21, overlaps the other. In some embodiments, the upper beam 30 is a reinforcing beam, and the lower beam 40 is a main beam; in this case, the end of the first segment 31 away from the first joint 21 overlaps the third segment 41. In other embodiments, the lower beam 40 is a reinforcing beam, and the upper beam 30 is a main beam; in this case, the end of the third segment 41 away from the first joint 21 overlaps the first segment 31.

[0055] The reinforcing beam can be located above or below the main beam, without limitation. Generally, the reinforcing beam is shorter than the main beam and has a smaller cross-sectional dimension.

[0056] It should be noted that the cross-sectional shape of the upper beam 30 and the lower beam 40 is not limited, whether they are used as main beams or as reinforcing beams. Optionally, the cross-sectional shape of the upper beam 30 and the lower beam 40 can be circular, annular, or elliptical, etc.

[0057] The folding frame 100 provided in this embodiment includes not only an upper beam 30 but also a lower beam 40. The combined action of the upper beam 30 and the lower beam 40 ensures the rigidity and strength of the folding frame 100. Furthermore, the first segment 31 and the second segment 32 of the upper beam 30 are respectively connected to the first joint 21 and the second joint 22 of the folding device 20, and the third segment 41 and the fourth segment 42 of the lower beam 40 are respectively connected to the first joint 21 and the second joint 22 of the folding device 20. That is, both the upper beam 30 and the lower beam 40 are connected to the same folding device 20. Thus, only one folding device 20 needs to be operated during folding and unfolding, making folding and unfolding convenient. At the same time, the second segment 32 and the fourth segment 42 do not overlap, and the ends of the first segment 31 and the third segment 41 connected to the first joint 21 do not overlap, but the other ends overlap. This not only saves materials but also improves the rigidity and strength of the folding frame 100.

[0058] In some embodiments, see further reference. Figure 2 The riser assembly 10 includes a riser 11, a bottom bracket 12, and a rear fork 13. The rear fork 13 includes a vertical fork 131. Both the rear fork 13 and the bottom bracket 12 are connected to the riser 11. The second segment 32 is connected to the riser 11 and / or the vertical fork 131, and the fourth segment 42 is connected to the riser 11 and / or the bottom bracket 12.

[0059] In some specific embodiments, the upper beam 30 is a reinforcing beam, the lower beam 40 is a main beam, and both the second section 32 and the fourth section 42 are connected to the riser 11. In other specific embodiments, the upper beam 30 is a reinforcing beam, the lower beam 40 is a main beam, the fourth section 42 is connected to the bottom bracket 12, and the second section 32 is connected to the riser 11 and the vertical bracket 131. In still other specific embodiments, the upper beam 30 is a main beam, the lower beam 40 is a reinforcing beam, the second section 32 is connected to the riser 11, and the fourth section 42 is connected to the bottom bracket 12.

[0060] It is conceivable that in other embodiments, the riser assembly 10 may be configured in other ways, such as by configuring the riser assembly 10 to include only the riser 11 and the rear fork 13, while omitting the bottom bracket 12.

[0061] In some other embodiments, see [reference] Figure 8 The riser assembly 10 includes a riser 11, a central motor bracket 14, and a rear fork 13. The rear fork 13 includes a vertical fork 131, and both the rear fork 131 and the central motor bracket 14 are connected to the riser 11. In this configuration, the bottom bracket 12 is omitted from the riser assembly 10. The central motor bracket 14 is located where the bottom bracket 12 is. The second segment 32 is connected to the riser 11 and / or the vertical fork 131, and the fourth segment 42 is connected to the riser 11 and / or the central motor bracket 14. The central motor bracket 14 is used to mount the central motor.

[0062] In some embodiments, see further reference. Figure 1 and Figure 2When unfolded, the upper beam 30 and / or lower beam 40 are straight beams extending in a straight line, which facilitates the processing and manufacturing of the upper beam 30 and / or lower beam 40 and can improve the rigidity and strength of the upper beam 30 and / or lower beam 40. Of course, in some other embodiments, the upper beam 30 and / or lower beam 40 may also be curved beams, which is not limited here.

[0063] In some embodiments, see further reference. Figure 1 and Figure 2 The first connector 21 has an upper section 211 and a lower section 212 that are connected to each other. The upper section 31 and the lower section 41 are connected to the upper section 211, and the lower section 41 is connected to the lower section 212. Since the upper section 31 and the lower section 41 are arranged vertically, by setting the first connector 21 to have an upper section 211 and a lower section 212 that are distributed vertically, after both the upper section 31 and the lower section 41 are connected to the first connector 21, there is a gap in the vertical direction at the ends of the two sections connected to the first connector 21.

[0064] The second connector 22 has a second upper section 221 and a second lower section 222 that are interconnected. The upper section of the second section 32 and the lower section of the fourth section 42 is connected to the second upper section 221, and the lower section of the fourth section 42 is connected to the second lower section 222. Since the second section 32 and the fourth section 42 are arranged vertically, by setting the second connector 22 to have a vertically distributed second upper section 221 and second lower section 222, there is a gap between the two sections after both the second section 32 and the fourth section 42 are connected to the second connector 22.

[0065] Furthermore, the first upper section 211 and the first lower section 212 are integrally formed to facilitate the processing and manufacturing of the first connector 21. It is conceivable that in other embodiments, the first upper section 211 and the first lower section 212 may also be formed separately and then connected by welding or screwing.

[0066] Optionally, the second upper section 221 and the second lower section 222 are integrally formed to facilitate the processing and manufacturing of the second connector 22. It is conceivable that in other embodiments, the second upper section 221 and the second lower section 222 may also be formed separately and then connected by welding or screwing.

[0067] The folding mechanism 20 also includes a locking assembly connected to the first connector 21 and / or the second connector 22 to lock or unlock the first connector 21 and the second connector 22 when they are in the closed state. By providing the locking assembly, the first connector 21 and the second connector 22 in the closed state can be locked so that the folding frame 100 can be stably maintained in the unfolded state.

[0068] It should be noted that since the locking assembly can also unlock the first connector 21 and the second connector 22, when the folding frame 100 needs to switch from the unfolded state to the folded state, the locking assembly can be operated to unlock the first connector 21 and the second connector 22, so that the first connector 21 and the second connector 22 can switch from the closed state to the separated state.

[0069] In some embodiments, see Figure 4 and Figure 5 The locking assembly includes a guide block 23 and a locking block 24. The guide block 23 is disposed on one of the first connector 21 and the second connector 22. The locking block 24 includes a connected screw 25 and a locking block 24. The screw 25 passes through the guide block 23 axially, and the locking block 24 is screwed to the screw 25. Both the first connector 21 and the second connector 22 are provided with a locking part 26 that cooperates with the locking block 24. The screw 25 is operably circumferentially rotatable relative to the guide block 23, and the locking block 24 moves axially along the screw 25 under the limiting action of the connector, so as to lock the first connector 21 and the second connector 22 with a concave-convex engagement with the locking part 26 when the first connector 21 and the second connector 22 are in the closed state.

[0070] With the above configuration, when it is necessary to lock the first connector 21 and the second connector 22 in the closed state, the operating screw 25 rotates forward relative to the guide block 23. Under the constraint of the connectors (which can be the first connector 21, the second connector 22, or both), the locking block 24 does not rotate with the screw 25, but moves axially relative to the screw 25. When the locking block 24 moves axially relative to the screw 25, the locking block 24 and the locking part 26 engage (the protrusions on the first connector 21 and the second connector 22 extend into the recess of the locking block 24) to lock the first connector 21 and the second connector 22. When it is necessary to unlock the first connector 21 and the second connector 22 in the closed state, the screw 25 is rotated in the opposite direction, and the locking block 24 moves axially relative to the screw 25 to reset and separate from the locking part 26, unlocking the connection.

[0071] For some specific implementation methods, please refer to [link / reference]. Figure 5 The first connector 21 and the second connector 22 have receiving grooves 27 on their respective sides facing each other. The locking part 26 is located on the inner edge of the side wall of the receiving groove 27, and the locking block 24 has a first groove. When the first connector 21 and the second connector 22 are locked together, the receiving grooves 27 of the first connector 21 and the second connector 22 are joined together, and the locking block 24 is accommodated in the space where the two receiving grooves 27 are joined. Furthermore, the inner edge can extend into the first groove, at which point the surface of the inner edge contacts the inner surface of the first groove, locking the first connector 21 and the second connector 22.

[0072] For other specific implementations, see [link to relevant documentation]. Figure 6The locking part 26 is located on the outer edge of the first connector 21 and the second connector 22. When the first connector 21 and the second connector 22 are in the closed state, the first groove of the locking block 24 cooperates with the outer edge of the first connector 21 and the second connector 22 to lock them together.

[0073] In some specific implementations, see [reference]. Figure 7 The locking assembly includes multiple locking blocks 24. The first groove of some locking blocks 24 engages with the inner edge of the first connector 21 or the second connector 22, and the first groove of the remaining locking blocks 24 engages with the outer edge of the first connector 21 or the second connector 22 to lock the first connector 21 and the second connector 22.

[0074] It is conceivable that the locking block 24 and the locking part 26 can also use other matching methods to lock the first connector 21 and the second connector 22, which are not limited here.

[0075] Further reading Figures 5-7 The locking assembly also includes a pre-locking spring 28, which is sleeved around the screw 25 and axially positioned between the guide block 23 and the locking block 24. Under the action of the pre-locking spring 28, the locking block 24 abuts against the connector axially. When the first connector 21 and the second connector 22 switch from a separated state to a closed state, the other connector presses against the locking block 24, causing the screw 25 to move axially relative to the guide block 23, deforming the pre-locking spring 28. When the first connector 21 and the second connector 22 are in the closed state, the pre-locking spring 28 returns to its original position, and the locking block 24 pre-locks the first connector 21 and the second connector 22.

[0076] With the above configuration, when the first connector 21 and the second connector 22 are in the closed state, even without operating the screw 25 to rotate forward relative to the guide block 23, the locking block 24 can pre-lock the first connector 21 and the second connector 22 to prevent their separation, thus providing a safety protection function. To release the pre-locking of the locking block 24 on the first connector 21 and the second connector 22, the screw 25 needs to be operated to drive the locking block 24 to move axially to compress the pre-locking spring 28.

[0077] In some embodiments, see further reference. Figure 6 and Figure 7 The locking assembly also includes an anti-loosening spring 29, which is sleeved on the screw 25 to press the locking block 24 to prevent the locking block 24 from loosening. When the locking assembly includes two locking blocks 24, the locking assembly includes a preload spring 28 and an anti-loosening spring 29, with the preload spring 28 and the anti-loosening spring 29 each pressing one locking block 24.

[0078] Specifically, the screw 25 is provided with a boss 220 and an adjusting nut 230, and the anti-loosening spring 29 is located between the adjusting nut 230 and the locking block 24. The boss 220 plays a limiting role.

[0079] The locking assembly also includes a handle 210, which is connected to the screw 25. The handle 210 is provided to facilitate the rotation of the screw 25, thereby locking or unlocking the first connector 21 and the second connector 22.

[0080] Of course, in other embodiments, the locking assembly may omit the handle 210 and instead directly operate the screw 25 to rotate. For example, the screw 25 may be provided with an operating end for operation by an external structure to facilitate its rotation.

[0081] It should be noted that the above description of some folding devices 20 used in the folding frame 100 does not limit the scope of this application. That is, in some other embodiments, other types of folding devices 20 may be used, and the type of folding device 20 is not limited.

[0082] Another embodiment of this application provides a folding bicycle, including the folding frame 100 described above. Since the folding frame 100 has beneficial effects, the folding bicycle including the folding frame 100 has the same beneficial effects, which will not be described in detail here.

[0083] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0084] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A folding frame, characterized in that, include: Riser assembly (10); The folding device (20) includes a first connector (21) and a second connector (22), wherein the first connector (21) and the second connector (22) are rotatably connected; The upper beam (30) and the lower beam (40) are provided. The upper beam (30) includes a first section (31) and a second section (32). The lower beam (40) includes a third section (41) and a fourth section (42). One end of the second section (32) and the fourth section (42) are connected to the riser assembly (10), and the other end of the second section (31) is connected to the second connector (22). One end of the first section (31) and the third section (41) are connected to the first connector (21). The second segment (32) is spaced above the fourth segment (42), and the end of the first segment (31) connected to the first connector (21) is spaced above the third segment (41). One of the upper beam (30) and the lower beam (40) is a main beam and the other is a reinforcing beam. The end of the first segment (31) and the third segment (41) that belongs to the reinforcing beam is connected to the other one away from the first joint (21).

2. The folding frame of claim 1, wherein, The first connector (21) has a first upper section (211) and a first lower section (212) connected to each other. The upper one of the first section (31) and the third section (41) is connected to the first upper section (211), and the lower one is connected to the first lower section (212). and / or The second connector (22) has a second upper section (221) and a second lower section (222) connected to each other. The upper one of the second section (32) and the fourth section (42) is connected to the second upper section (221), and the lower one is connected to the second lower section (222).

3. The folding frame of claim 2, wherein, The first upper section (211) and the first lower section (212) are integrally formed; and / or The second upper section (221) and the second lower section (222) are integrally formed.

4. The folding frame of claim 1, wherein, When the upper beam (30) and / or the lower beam (40) are unfolded, they are straight beams extending in a straight line.

5. The folding frame of claim 1, wherein, The riser assembly (10) includes a riser (11), a bottom bracket (12), and a rear fork (13). The rear fork (13) includes a vertical fork (131). Both the rear fork (13) and the bottom bracket (12) are connected to the riser (11). The second segment (32) is connected to the riser (11) and / or the vertical fork (131). The fourth segment (42) is connected to the riser (11) and / or the bottom bracket (12). and / or The riser assembly (10) includes a riser (11), a central motor bracket (14), and a rear fork (13). The rear fork (13) includes a vertical fork (131). Both the rear fork (13) and the central motor bracket (14) are connected to the riser (11). The second segment (32) is connected to the riser (11) and / or the vertical fork (131). The fourth segment (42) is connected to the riser (11) and / or the central motor bracket (14).

6. The folding frame of any one of claims 1-5, wherein, The folder (20) further includes a locking assembly connected to the first connector (21) and / or the second connector (22) to lock or unlock the first connector (21) and the second connector (22) when the first connector (21) and the second connector (22) are in a closed state.

7. The folding frame of claim 6, wherein, The locking assembly includes: A guide block (23) is provided on one of the first connector (21) and the second connector (22); A connected screw (25) and a locking block (24) are provided, wherein the screw (25) passes through the guide block (23) axially, and the locking block (24) is screwed to the screw (25); the first joint (21) and the second joint (22) are both provided with locking parts (26) that cooperate with the locking block (24); The screw (25) is operably rotatable circumferentially relative to the guide block (23), and the locking block (24) moves axially along the screw (25) under the limiting action of the joint, so as to lock the first joint (21) and the second joint (22) in a concave-convex fit with the locking part (26) in the closed state.

8. The folding frame of claim 7, wherein, The locking assembly also includes a pre-locking spring (28) sleeved outside the screw (25), which is disposed between the guide block (23) and the locking block (24) along the axial direction. The locking block (24) abuts against the joint in the axial direction under the action of the pre-locking spring (28). When the first connector (21) and the second connector (22) switch from the separated state to the closed state, the other connector presses against the locking block (24) to cause the screw (25) to move axially relative to the guide block (23), and the pre-locking spring (28) elastically deforms; when the first connector (21) and the second connector (22) are in the closed state, the pre-locking spring (28) resets, and the locking block (24) pre-locks the first connector (21) and the second connector (22); and / or The locking assembly also includes an anti-loosening spring (29), which is sleeved on the screw (25) to press the locking block (24).

9. The folding frame of claim 7, wherein, The locking assembly also includes a handle (210) connected to the screw (25).

10. A folding bicycle, characterized by Including the folding frame as described in any one of claims 1-9.

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