Folding bike

Abstract

A folding bicycle is disclosed, comprising: a left front column assembly, a right front column assembly, a left rear column assembly, and a right rear column assembly, each of the column assemblies being provided with a top connecting piece and a bottom connecting piece with a variable axial distance; a front folding assembly which is respectively connected to the top connecting piece and the bottom connecting piece of the left front column assembly and the right front column assembly and can be folded in the width direction of the frame; a rear folding assembly; a left folding assembly; a right folding assembly; and an underframe assembly which can be folded in both the width direction and the length direction of the frame.

Description

Technical Field

[0001] The present invention relates to a folding bicycle, in particular to a retractable folding frame of the folding bicycle. Background Art

[0002] Folding bicycles have a wide range of usage scenarios. For example, when in the unfolded state, the folding bicycle can help to transport goods and / or even carry people; when in the stored state, the folding bicycle can occupy a smaller volume, so as to facilitate storage and transportation, such as being placed in the trunk of a family car. Therefore, the main requirement for a family folding bicycle is that it can occupy as little space as possible in the stored state but be as strong and flexible as possible in the unfolded state, so as to facilitate carrying people or goods.

[0003] However, these two requirements for different states are often contradictory. Therefore, designers need to design a folding bicycle that can be folded as much as possible in multiple directions but is strong and durable enough after unfolding.

[0004] When designing a folding bicycle, the load-bearing capacity of the bottom of the frame is usually less considered. However, for the carrying capacity of a folding bicycle, the load-bearing capacity of the bottom of the frame will significantly affect the amount of objects stored. In addition, for a folding bicycle in the stored state, it is usually necessary for the user to pull and move it, so it is also very practical to consider how to add corresponding structural designs to ensure the convenience of such pulling and moving. In addition, other considerations of folding bicycles, such as safety and comfort when carrying people, also need to be considered. Summary of the invention

[0005] The purpose of the present application is to provide a novel folding bicycle, so as to ensure that the user can conveniently minimize the volume of the folding bicycle, and at the same time, when the folding bicycle is unfolded for use, the structure is firm, the load-bearing capacity is strong, the operation is convenient, and the application is flexible.

[0006] According to one aspect of the present application, a folding bicycle is provided, wherein the folding bicycle has a frame, and the frame comprises:

[0007] A left front column assembly, a right front column assembly, a left rear column assembly, and a right rear column assembly, each of the column assemblies being provided with a top end connecting piece and a bottom end connecting piece with a variable axial distance;

[0008] A front folding assembly connected to the top connecting piece and the bottom connecting piece of the left front pillar assembly and the right front pillar assembly, respectively, and capable of being folded in the width direction of the frame;

[0009] A rear end folding assembly connected to the top end connecting piece and the bottom end connecting piece of the left rear pillar assembly and the right rear pillar assembly, respectively, and capable of being folded in the width direction of the frame;

[0010] A left folding assembly connected to the top connecting piece and the bottom connecting piece of the left front pillar assembly and the left rear pillar assembly, respectively, and capable of being folded in the length direction of the frame;

[0011] A right folding assembly connected to the top connecting piece and the bottom connecting piece of the right front pillar assembly and the right rear pillar assembly, respectively, and capable of being folded in the length direction of the frame;

[0012] An underframe assembly connected to the top and bottom connectors of the left front pillar assembly, the right front pillar assembly, the left rear pillar assembly, the right rear pillar assembly, the front folding assembly, and the rear folding assembly, respectively, and cooperating with the left folding assembly and the right folding assembly, and capable of being folded simultaneously in the width direction and the length direction of the frame;

[0013] Each of the left front column assembly, the right front column assembly, the left rear column assembly, and the right rear column assembly includes a telescopic rod assembly, which includes an inner rod and a hollow outer rod, wherein the inner rod is arranged in the outer rod in a manner that it can slide along the axial direction, and the corresponding top connecting piece is fixed to the upper end of the inner rod, and the corresponding bottom connecting piece is fixed to the lower end of the outer rod, and the axial length position of each bottom connecting piece relative to the corresponding column assembly remains unchanged during the folding and storage of the folding bicycle. Since the axial position of each bottom connecting piece remains unchanged during the folding of the frame, the overall firmness and load-bearing capacity of the frame are improved.

[0014] Optionally, the front folding component includes:

[0015] A foldable upper connecting beam, which is composed of two left and right connecting beam sections hinged to each other, wherein the left connecting beam section is hingedly connected to an upper cross bar and a diagonal tie rod, the upper cross bar is also hingedly connected to the top end connecting piece of the left front column assembly, and the diagonal tie rod is also hingedly connected to the bottom end connecting piece of the left front column assembly, and the right connecting beam section is hingedly connected to an upper cross bar and a diagonal tie rod, the upper cross bar is also hingedly connected to the top end connecting piece of the right front column assembly, and the diagonal tie rod is also hingedly connected to the bottom end connecting piece of the right front column assembly;

[0016] a base located below the upper connecting beam;

[0017] a first bottom support beam and a second bottom support beam, the first bottom support beam and the second bottom support beam each having a first end connected to each other in an articulated manner between the upper connecting beam and the base; and an opposite second end, the second end of the first bottom support beam being connected in an articulated manner to a bottom end connection piece of the right front pillar assembly, and the second end of the second bottom support beam being connected in an articulated manner to a bottom end connection piece of the left front pillar assembly;

[0018] a first bottom connecting beam and a second bottom connecting beam, wherein the first bottom connecting beam is connected between the first bottom supporting beam and the base in an articulated manner, and the second bottom connecting beam is connected between the second bottom supporting beam and the base in an articulated manner;

[0019] A first lower cross bar and a second lower cross bar, wherein the first lower cross bar is connected in a hinged manner between the first bottom support beam and a sliding ring of the right front column assembly that can slide linearly relative to its outer rod, and the second lower cross bar is connected in a hinged manner between the second bottom support beam and a sliding ring of the left front column assembly that can slide linearly relative to its outer rod. This rod connection structure design of the front folding assembly ensures that a plurality of symmetrically distributed triangular connection structures are formed between the two column assemblies. These triangular connection structures can ensure the structural firmness of the front folding assembly when it is in the unfolded state.

[0020] In the context of the present application, feature A is connected between feature B and feature C, which means that feature A is located between feature B and feature C and is connected to both feature B and feature C.

[0021] Optionally, the rear end folding component includes:

[0022] A foldable upper connecting beam, which is composed of two left and right connecting beam sections hinged to each other, wherein the left connecting beam section is hingedly connected to an upper cross bar and a diagonal tie rod, the upper cross bar is also hingedly connected to the top end connecting piece of the left rear column assembly, and the diagonal tie rod is also hingedly connected to the bottom end connecting piece of the left rear column assembly, and the right connecting beam section is hingedly connected to an upper cross bar and a diagonal tie rod, the upper cross bar is also hingedly connected to the top end connecting piece of the right rear column assembly, and the diagonal tie rod is also hingedly connected to the bottom end connecting piece of the right rear column assembly;

[0023] a base located below the upper connecting beam;

[0024] a first bottom support beam and a second bottom support beam, the first bottom support beam and the second bottom support beam each having a first end connected to each other in an articulated manner between the upper connecting beam and the base; and an opposite second end, the second end of the first bottom support beam being connected in an articulated manner to a bottom end connection piece of the right rear pillar assembly, and the second end of the second bottom support beam being connected in an articulated manner to a bottom end connection piece of the left rear pillar assembly;

[0025] a first bottom connecting beam and a second bottom connecting beam, wherein the first bottom connecting beam is connected between the first bottom supporting beam and the base in an articulated manner, and the second bottom connecting beam is connected between the second bottom supporting beam and the base in an articulated manner;

[0026] A first lower cross bar and a second lower cross bar, wherein the first lower cross bar is connected in a hinged manner between the first bottom support beam and a sliding ring of the right rear column assembly that can slide linearly relative to its outer rod, and the second lower cross bar is connected in a hinged manner between the second bottom support beam and a sliding ring of the left rear column assembly that can slide linearly relative to its outer rod. Similar to the front folding assembly, the rod connection structure design of the rear folding assembly ensures that a plurality of symmetrically distributed triangular connection structures are formed between the two column assemblies. These triangular connection structures can ensure the structural firmness of the rear folding assembly when it is in the unfolded state.

[0027] Optionally, the left folding assembly includes a middle telescopic rod assembly and a first cross rod assembly and a second cross rod assembly which are hingedly connected to opposite ends of the middle telescopic rod assembly.

[0028] The intermediate telescopic rod assembly includes an inner rod and an outer tube sleeved on the inner rod so as to be linearly movable relative to the inner rod, the lower end of the inner rod defines one end hinged to the first cross rod assembly and the second cross rod assembly, and the upper end of the outer tube defines the other end hinged to the first cross rod assembly and the second cross rod assembly,

[0029] The first cross-rod assembly includes a first rod and a second rod crossing each other, and the first rod and the second rod are hinged to each other at the intersection, the first rod of the first cross-rod assembly has a first end connected to the top end connection member of the left front pillar assembly in a hinged manner and an opposite second end connected to the middle telescopic rod assembly in a hinged manner, the second rod of the first cross-rod assembly has a first end connected to the bottom end connection member of the left front pillar assembly in a hinged manner and an opposite second end connected to the middle telescopic rod assembly in a hinged manner,

[0030] The second cross rod assembly includes a first rod and a second rod crossing each other, and the first rod and the second rod are hinged to each other at the intersection, the first rod of the second cross rod assembly has a first end connected to the top end connecting piece of the left rear pillar assembly in a hinged manner and an opposite second end connected to the middle telescopic rod assembly in a hinged manner, and the second rod of the second cross rod assembly has a first end connected to the bottom end connecting piece of the left rear pillar assembly in a hinged manner and an opposite second end connected to the middle telescopic rod assembly in a hinged manner.

[0031] Optionally, the right folding assembly includes a middle telescopic rod assembly and a first cross rod assembly and a second cross rod assembly which are hingedly connected to opposite ends of the middle telescopic rod assembly.

[0032] The middle telescopic rod assembly of the right folding assembly comprises an inner rod and an outer tube sleeved on the inner rod so as to be linearly movable relative to the inner rod, the lower end of the inner rod defines one end hinged to the first cross rod assembly of the right folding assembly and the second cross rod assembly of the right folding assembly, and the upper end of the outer tube defines the other end hinged to the first cross rod assembly of the right folding assembly and the second cross rod assembly of the right folding assembly,

[0033] The first cross-rod assembly of the right folding assembly includes a first rod and a second rod that cross each other, and the first rod and the second rod are hinged to each other at the intersection, the first rod of the first cross-rod assembly has a first end connected to the top end connection member of the right front pillar assembly in a hinged manner and an opposite second end connected to the middle telescopic rod assembly in a hinged manner, the second rod of the first cross-rod assembly of the right folding assembly has a first end connected to the bottom end connection member of the right front pillar assembly in a hinged manner and an opposite second end connected to the middle telescopic rod assembly in a hinged manner,

[0034] The second cross rod assembly of the right folding assembly includes a first rod and a second rod that cross each other, and the first rod and the second rod are hinged to each other at the intersection, the first rod of the second cross rod assembly has a first end connected to the top end connecting piece of the right rear pillar assembly in a hinged manner and an opposite second end connected to the middle telescopic rod assembly in a hinged manner, and the second rod of the second cross rod assembly of the right folding assembly has a first end connected to the bottom end connecting piece of the right rear pillar assembly in a hinged manner and an opposite second end connected to the middle telescopic rod assembly in a hinged manner.

[0035] Optionally, the chassis assembly comprises:

[0036] The first chassis half assembly and the second chassis half assembly are hinged to each other, and the first chassis half assembly is hingedly connected to the bottom end connecting parts of the left front column assembly, the right front column assembly and the base of the front folding assembly, and the second chassis half assembly is hingedly connected to the bottom end connecting parts of the left rear column assembly, the right rear column assembly and the base of the rear folding assembly. This design of the chassis assembly increases the load-bearing capacity while ensuring that the chassis assembly can be folded.

[0037] Optionally, the first chassis half assembly includes a first rod, a second rod, a third rod and a fourth rod, the first rod and the second rod intersect each other and are hinged to each other at the intersection, the third rod and the fourth rod intersect each other and are hinged to each other at the intersection;

[0038] The second chassis half assembly includes a first rod, a second rod, a third rod and a fourth rod, the first rod and the second rod intersect each other and are hinged to each other at the intersection, the third rod and the fourth rod intersect each other and are hinged to each other at the intersection.

[0039] Optionally, the first rod of the first chassis half assembly has a first end connected to the bottom end connection member of the left front pillar assembly in an articulated manner, the second rod and the third rod of the first chassis half assembly each have a first end connected to the base of the front folding assembly in an articulated manner, and the fourth rod of the first chassis half assembly has a first end connected to the bottom end connection member of the right front pillar assembly in an articulated manner;

[0040] The first rod of the second chassis half assembly has a first end connected to the bottom end connecting member of the left rear pillar assembly in an articulated manner, the second rod and the third rod of the second chassis half assembly each have a first end connected to the base of the rear end folding assembly in an articulated manner, and the fourth rod of the second chassis half assembly has a first end connected to the bottom end connecting member of the right rear pillar assembly in an articulated manner;

[0041] The first chassis half assembly and the second chassis half assembly are hingedly connected to each other via opposite second ends of their corresponding first, second, third and fourth bars.

[0042] Optionally, the first ends of the first rod, the second rod, the third rod and the fourth rod of the first chassis half assembly and the left front column assembly, the front end folding assembly and the right front column assembly define a pivot axis; the first ends of the first rod, the second rod, the third rod and the fourth rod of the second chassis half assembly and the left rear column assembly, the rear end folding assembly and the right rear column assembly define a pivot axis; the pivot axes defined between the first chassis half assembly and the second chassis half assembly are parallel to each other.

[0043] Optionally, the second end of the second rod of the first chassis half assembly and the second end of the second rod of the second chassis half assembly are hingedly connected to a sliding sleeve which is linearly slidably arranged on the middle telescopic rod assembly of the left folding assembly;

[0044] The second end of the third rod of the first chassis half assembly and the second end of the third rod of the second chassis half assembly are connected in a hinged manner to a sliding sleeve that is linearly slidably arranged on the middle telescopic rod assembly (1121) of the right folding assembly.

[0045] Optionally, the sliding sleeve of the left folding assembly is sleeved on the outer tube of the middle telescopic rod assembly of the left folding assembly; the sliding sleeve of the right folding assembly is sleeved on the outer tube of the middle telescopic rod assembly of the right folding assembly.

[0046] Optionally, the frame of the folding bicycle further comprises an auxiliary support cross bar assembly to support the bottom of the chassis assembly when the frame is in the unfolded state, the auxiliary support cross bar assembly comprises a first rod and a second rod, the first rod and the second rod each having a first end hinged to each other, the opposite second end of the first rod is hingedly connected to the lower end of the inner rod of the middle telescopic rod assembly of the left folding assembly; the opposite second end of the second rod is hingedly connected to the lower end of the inner rod of the middle telescopic rod assembly of the right folding assembly. The use of the auxiliary support cross bar assembly further improves the load-bearing capacity of the chassis assembly, thereby ensuring that the folding bicycle can carry heavier items.

[0047] Optionally, each of the left rear column assembly and the right rear column assembly includes a handlebar assembly fixed in parallel with the telescopic rod assembly, and the wheel assembly connected to the left rear column assembly and the wheel assembly connected to the right rear column assembly have a common rotation axis, and the common rotation axis is located between the longitudinal center axis of the telescopic rod assembly of the left rear column assembly and the longitudinal center axis of the handlebar assembly and between the longitudinal center axis of the telescopic rod assembly of the right rear column assembly and the longitudinal center axis of the handlebar assembly. This special design can increase the possibility of resisting the impact of lateral force on the left rear column assembly and the right rear column assembly, that is, increase the structural robustness when impacted by lateral force.

[0048] Optionally, the frame of the folding bicycle further comprises a handlebar assembly foldable in the width direction of the frame, wherein the handlebar assembly is respectively connected to the handlebar rod assembly of the left rear column assembly and the handlebar rod assembly of the right rear column assembly in an articulated manner.

[0049] Optionally, the frame of the folding bicycle further comprises a pull rod assembly, wherein the pull rod assembly comprises a first end connected to the base of the front folding assembly in a hinged manner and an opposite free second end for a user to hold.

[0050] Optionally, the pull rod assembly includes two outer rods fixedly spaced apart from each other and an inner double rod member installed between the two outer rods and capable of linearly sliding relative to the outer rods.

[0051] A retainer is provided on the upper connecting beam of the front end folding assembly to selectively engage and lock the inner double rod.

[0052] Optionally, the frame of the folding bicycle also includes an auxiliary unfolding bracket that can be folded in the width direction of the frame, and the auxiliary unfolding bracket is hingedly connected to the push handle rod assemblies of the left rear column assembly and the right rear column assembly near the bottom end connecting parts of the left rear column assembly and the right rear column assembly, respectively.

[0053] By adopting the above technical solution of the present application, it can be ensured that the folding bicycle is stored in a manner that occupies the smallest volume, while the carrying capacity of the folding bicycle after unfolding is enhanced and the durability is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] The principles and various aspects of the present application can be more fully understood from the following detailed description in conjunction with the following drawings. It should be noted that the scales of the drawings may be different for the purpose of clear description, but this will not affect the understanding of the present application. In the drawings:

[0055] Figure 1is a perspective view schematically showing a folding bicycle according to an embodiment of the present application, wherein the frame of the folding bicycle is in an unfolded state;

[0056] Figure 2 is a perspective view schematically showing a frame of a folding vehicle according to an embodiment of the present application, wherein the frame is in an unfolded state;

[0057] Figure 3 is a perspective view schematically showing a frame of a folding bicycle according to an embodiment of the present application in a stowed state, that is, a fully folded state;

[0058] Figure 4 is a perspective view schematically showing a folding bicycle frame according to an embodiment of the present application in a state as follows Figure 2 The expanded state shown is similar to Figure 3 intermediate folded states between the stowed states shown;

[0059] Figure 5 It is a three-dimensional exploded view, schematically showing the main components of the frame;

[0060] Figure 6 is a perspective view schematically showing a column assembly of a frame, in particular a front left column assembly;

[0061] Figure 7 is a perspective view schematically showing a side folding assembly of a frame;

[0062] Figure 8 is a perspective view schematically showing an end folding assembly of a frame, in particular a front end folding assembly;

[0063] Fig. 9 It is seen from the front and back direction. Figure 8 a front view of the end fold assembly shown;

[0064] Fig.10 is a perspective view schematically showing a chassis assembly of a vehicle frame;

[0065] Fig.11 is a front view schematically showing a tie rod assembly according to an embodiment of the present application;

[0066] Fig.12 is an exploded perspective view schematically showing a retaining frame according to an embodiment of the present application, wherein the retaining frame can be installed on a front folding assembly, for example;

[0067] Fig.13 is a cross-sectional view schematically showing Fig.12 Cage;

[0068] Fig.14is a perspective view schematically showing the frame in the stowed state being manually pulled and moved;

[0069] Fig.15A is a view schematically showing details of where the side folding assembly cooperates with the bottom frame assembly, wherein the frame is in an intermediate folded state;

[0070] Fig. 15B is a view schematically showing details of where the side folding assembly cooperates with the bottom frame assembly, wherein the frame is in an unfolded state. DETAILED DESCRIPTION

[0071] In the various figures of the present application, features with the same structure or similar functions are represented by the same reference numerals.

[0072] Figure 1 A folding bicycle 100 according to an embodiment of the present application is schematically shown. The folding bicycle 100 comprises a frame 110; four wheel assemblies 120FL, 120FR, 120RL, and 120RR mounted at the bottom of the frame 110; a cloth assembly 130 detachably connected to the frame 110; four canopy support rod assemblies 140 detachably mounted upright at the four corners of the frame 110; and a canopy 150 detachably supported by the canopy support rod assemblies 140.

[0073] For reasons of clarity, Figure 1 , wherein the direction of the X-axis is parallel to the front-rear direction of the folding bicycle 100 or the length direction of the frame 110, the direction of the Y-axis is parallel to the width direction of the folding bicycle 100 or the width direction of the frame 110, and the direction of the Z-axis is parallel to the height direction of the folding bicycle 100 or the height direction of the frame 110. In addition, describing a feature moving in one direction means that the feature moves along this direction or in parallel with this direction. The definition of the three-dimensional rectangular coordinate system XYZ is also applicable to other drawings of this specification. In the context of this application, the term "front" or "rear" is only a relative direction concept, and does not mean the use direction that the user must follow when using the folding bicycle; in fact, the term "front" or "rear" can be interchanged with each other. The term "left" or "right" is only a relative direction concept. The term "upper" or "lower" or "top" or "bottom" refers to the relative orientation concept relative to the direction of gravity.

[0074] Further references Figure 2 , which shows a frame 110 of a folding bicycle 100 according to an embodiment of the present application, wherein the frame 110 is mounted with Figure 1The four wheel assemblies 120FL, 120FR, 120RL, 120RR and four canopy support rod assemblies 140 are shown. The frame 110 mainly includes four column assemblies 1110FL, 1110FR, 1110RL, 1110RR; two side folding assemblies 1120L, 1120R and two end folding assemblies 1130F, 1130R respectively connected to the four column assemblies 1110FL, 1110FR, 1110RL, 1110RR; and a bottom frame assembly 1140 connected at the bottom ends of the four column assemblies 1110FL, 1110FR, 1110RL, 1110RR and connected to the two side folding assemblies 1120L, 1120R.

[0075] In the context of the present application, reference numerals with reference to the symbol “F” are meant to refer to components at the “front”, reference numerals with reference to the symbol “R” are meant to refer to components at the “rear” or “right”, and reference numerals with reference to the symbol “L” are meant to refer to components at the “left”. For example, reference numeral 1110FL refers to a left front column assembly of the frame 110, reference numeral 1110FR refers to a right front column assembly of the frame 110, and so on.

[0076] Especially reference Figure 5 The four column assemblies 1110FL, 1110FR, 1110RL, and 1110RR are generally upright relative to the ground, and the front folding assembly 1130F is installed between the two column assemblies 1110FL and 1110FR, the rear folding assembly 1130R is installed between the two column assemblies 1110RL and 1110RR, the left folding assembly 1120L is installed between the two column assemblies 1110FL and 1110RL, and the right folding assembly 1120R is installed between the two column assemblies 1110FR and 1110RR. The bottom frame assembly 1140 can be connected to the bottom ends of the four column assemblies 1110FL, 1110FR, 1110RL, and 1110RR at the same time and form a matching relationship with the two side folding assemblies 1120L and 1120R. The four wheel assemblies 120FL, 120FR, 120RL, 120RR are mounted on the bottom ends of the corresponding column assemblies 1110FL, 1110FR, 1110RL, 1110RR, respectively.

[0077] Each column assembly 1110FL, 1110FR, 1110RL, 1110RR is mainly composed of rods. In the context of this application, the rods can be understood as solid rods or hollow rods, such as tubes, as needed. In a preferred embodiment, the tubes mentioned herein can be lightweight metal tubes such as thin-walled stainless steel tubes and aluminum tubes. Figure 6Take a front pillar assembly of the present application, such as the left front pillar assembly 1110FL, as an example. Those skilled in the art should know that the structure of another front pillar assembly, such as the right front pillar assembly 1110FR, is similar to the left front pillar assembly 1110FL, but the two are mirror-symmetric with respect to the longitudinal center vertical plane of the frame 110. Therefore, any structural features described below for the left front pillar assembly 1110FL are also applicable to the right front pillar assembly 1110FR.

[0078] The left front pillar assembly 1110FL includes a telescopic rod assembly that is telescopically connected to each other along the length direction. For example, the telescopic rod assembly includes an inner rod 1112 and an outer rod 1111 of a hollow design, wherein the inner rod 1112 is inserted into the hollow structure of the outer rod 1111 in a manner that allows linear sliding. For example, a fastener may be provided between the outer rod 1111 and the inner rod 1112 to selectively lock the longitudinal position therebetween. For example, the fastener may be a threaded member that passes through the outer rod 1111, the threaded member being perpendicular to the longitudinal direction of the telescopic rod assembly and being able to selectively move toward and contact the inner rod 1112 or move away from the inner rod 1112 by rotating. In addition, in order to increase the support firmness and sliding reliability, a support rod 1117 is fixed in parallel with the inner rod 1112, one end of the support rod 1117 is fixed relative to the inner rod 1112, and the other end is fixed to a slip ring 1118 that can slide linearly relative to the outer rod 1111. For example, the slip ring 1118 can be axially slidably sleeved on the outer surface of the outer rod 1111. In addition, the support rod 1117 passes through a guide fixed to one end of the outer rod 1111 and is guided by it, thereby ensuring the telescopic reliability and structural firmness of the telescopic rod assembly.

[0079] A top connector 1113 is provided at the top end of the telescopic rod assembly, and a bottom connector 1114 is provided at the bottom end of the telescopic rod assembly. The top end of the telescopic rod assembly is defined by the upper end / top end of the inner rod 1112, and the bottom end of the telescopic rod assembly is defined by the lower end / bottom end of the outer rod. The top connector 1113 and the bottom connector 1114 can be fastened to the vicinity of the corresponding ends of the telescopic rod assembly, for example, by screws. The top connector 1113 and the bottom connector 1114 are used to connect the corresponding parts of the front folding assembly 1130F in a hinged manner, so that under the premise that the longitudinal axis of the left front column assembly 1110FL is parallel to the Z-axis direction, the corresponding contraction or expansion process of the front folding assembly 1130F can cause the left front column assembly 1110FL to move in the Y-axis direction. The top connecting member 1113 and the bottom connecting member 1114 are also used to connect the corresponding parts of the left folding assembly 1120L in a hinged manner, so that under the premise that the longitudinal axis of the left front column assembly 1110FL is parallel to the Z-axis direction, the corresponding contraction or expansion process of the left folding assembly 1120L can make the left front column assembly 1110FL move in the X-axis direction. The bottom connecting member 1114 is located in the left front column assembly 1110FL adjacent to the bottom end of the wheel assembly 120FL installed thereon. It can be seen that the slip ring 1118 is constrained to be able to slide back and forth axially only between the guide member and the bottom connecting member 1114.

[0080] See further Figure 5 , the left rear column assembly 1110RL includes a first telescopic rod assembly and a handlebar assembly 1115 fixed in parallel with the first telescopic rod assembly. The first telescopic rod assembly of the left rear column assembly 1110RL can be constructed in a similar manner to the telescopic rod assembly of the left front column assembly 1110FL as described above. The handlebar assembly 1115 is, for example, a separate rod member fixed in parallel with the first telescopic rod assembly, such as a hollow tube. For example, the first telescopic rod assembly of the left rear column assembly 1110RL includes a top connecting member 1113 and a bottom connecting member 1114'. These top connectors 1113 and bottom connectors 1114' can connect components of the left folding assembly 1120L and components of the rear folding assembly 1130R in a manner similar to the top connectors 1113 and bottom connectors 1114 of the left front pillar assembly 1110FL, so that, under the premise that the longitudinal axis of the left rear pillar assembly 1110RL is parallel to the Z-axis direction, the corresponding contraction or expansion process of the left folding assembly 1120L can cause the left rear pillar assembly 1110RL to move in the X-direction, and / or, the corresponding contraction or expansion process of the rear folding assembly 1130R can cause the left rear pillar assembly 1110RL to move in the Y-direction.

[0081] At the same time, the bottom end connecting piece 1114 of the left front pillar assembly 1110FL and the bottom end connecting piece 1114' of the left rear pillar assembly 1110RL can also be connected to the components of the base frame assembly 1140 described below in a hinged manner, so that as the base frame assembly 1140 contracts or expands, the left front pillar assembly 1110FL and the left rear pillar assembly 1110RL can move simultaneously in the X and Y directions.

[0082] The push handle rod assembly 1115 of the left rear column assembly 1110RL can be fixed in parallel with the first telescopic rod assembly of the left rear column assembly 1110RL via the bottom end connector 1114'. In addition, between the top connector 1113 and the bottom end connector 1114' of the first telescopic rod assembly of the left rear column assembly 1110RL, a connector 1116 is fastened to both the first telescopic rod assembly of the left rear column assembly 1110RL and the push handle rod assembly 1115 to further ensure the parallel fixation of the two. For example, the connector 1116 can be fastened to the first telescopic rod assembly of the left rear column assembly 1110RL and the push handle rod assembly 1115 using a suitable fastening member such as a screw. The top end of the push handle rod assembly 1115 can be connected to a component of the push handle assembly 1160, for example.

[0083] This double parallel rod design of the left rear column assembly 1110RL and the right rear column assembly 1110RR can make the common rotation axis (parallel to the Y-axis direction) of the two wheel assemblies 120RL and 120RR located between the first telescopic rod assembly and the handlebar assembly 1115 when viewed in the XZ plane when the wheel assemblies 120RL and 120RR are connected to the bottom ends of the corresponding column assemblies. In other words, the common rotation axis of the wheel assemblies 120RL and 120RR is located between the longitudinal center axis of the first telescopic rod assembly of the left rear column assembly 1110RL and the right rear column assembly 1110RR and the longitudinal center axis of the handlebar assembly 1115. The wheel assemblies 120RL and 120RR are designed to be able to rotate only around a rotation axis parallel to the Y-axis direction. Therefore, the design of the rotation axis being located between the longitudinal center axis of the first telescopic rod assembly and the longitudinal center axis of the handle rod assembly 1115 in the XZ plane can increase the possibility of resisting the impact of lateral forces parallel to the Y-axis direction when the left rear column assembly 1110RL and the right rear column assembly 1110RR are subjected to, that is, increase the structural strength when subjected to lateral force impacts.

[0084] like Figure 2As shown, the push handle assembly 1160 includes a left joint 1161L, a right joint 1161R, two intermediate joints 1162L, 1162R and a plurality of connecting rods connected respectively between these joints, wherein the connecting rods between the two intermediate joints 1162L, 1162R can be articulated to each other. In the context of the present application, the term "joint" means that the two parts connected by the joint can rotate relative to each other around the rotation axis defined by the joint because the joint can rotate relative to each other. Therefore, the left joint 1161L and the right joint 1161R of the push handle assembly 1160 can be connected to the top of the push handle rod assembly 1115 of the left rear column assembly 1110RL and the right rear column assembly 1110RR respectively, for example, via a suitable fastener such as a screw. After being connected in place, the rotation axes of the left joint 1161L and the right joint 1161R are colinear and parallel to the common rotation axis of the wheel assembly 120RL and 120RR. Therefore, as the right front column assembly 1110FR and the right rear column assembly 1110RR move closer to each other in the Y-axis direction, the push handle assembly 1160 can be moved accordingly. Figure 2 The expanded state shown is collapsed to the state shown by folding the links of the push handle assembly 1160 relative to each other. Figure 4 The state shown in Figure 1 and then shrinks to the state shown in Figure 1 Figure 3 Those skilled in the art should be aware that the rotational positions of these connection joints can be relatively fixed, that is, after the push handle assembly 1160 is installed in place, it can be rotated to a suitable position relative to the column assembly and locked as needed. Then, it can be unlocked and rotated freely again as needed.

[0085] The structures of the left front column assembly 1110FL and the left rear column assembly 1110RL and the right front column assembly 1110FR and the right rear column assembly 1110RR are mirror-symmetrical with respect to the longitudinal center vertical plane of the frame 110. Therefore, when these column assemblies are respectively connected to these side folding assemblies, the end folding assemblies and the bottom frame assembly, the contraction and expansion process of these side folding assemblies, the end folding assemblies and the bottom frame assembly can make these column assemblies move simultaneously in the X and Y directions.

[0086] It should be pointed out that from Figures 2 to 4It can be seen that the positions of the bottom connecting members 1114, 1114' of the left front column assembly 1110FL, the left rear column assembly 1110RL, the right front column assembly 1110FR and the right rear column assembly 1110RR on the Z axis remain unchanged when these column assemblies move in the X and Y directions. In other words, the longitudinal positions of the bottom connecting members 1114, 1114' on the corresponding column assemblies remain unchanged when these column assemblies move. Such a design can ensure that the frame 110 is not easily deformed due to the relative movement of the lower connecting members in the unfolded state, thereby improving the durability of the frame 110 in the unfolded state.

[0087] See instead Figure 7 , schematically shows one of the two side folding assemblies, for example, the left folding assembly 1120L. It should be clear that the two side folding assemblies are mirror-symmetrical with respect to the longitudinal center vertical plane of the frame 110. Therefore, the content described below with reference to the left folding assembly 1120L can be correspondingly applied to the right folding assembly 1120R.

[0088] The left folding assembly 1120L includes a middle telescopic rod assembly 1121 and two cross rod assemblies 1122 and 1123 that are simultaneously connected in a hinged manner to the opposite ends of the middle telescopic rod assembly 1121. For example, the cross rod assembly 1122 can be referred to as a first cross rod assembly 1122, and the cross rod assembly 1123 can be referred to as a second cross rod assembly 1122. The middle telescopic rod assembly 1121, for example, includes an inner rod 1121b and an outer tube 1121a that is sleeved on the inner rod 1121b so as to be able to move linearly relative to it. When viewed in the Z-axis direction, the top end of the outer tube 1121a is always located above the bottom end of the inner rod 1121b. The cross rod assembly 1122 includes a first rod 1122a and a second rod 1122b. The first rod 1122a and the second rod 1122b cross each other and are connected to each other in a hinged manner at the intersection. In the context of the present application, the term "hingedly connected" is used to describe the connection state of two parts, which means that the two parts have a pivot axis after being connected and the two parts can pivot relative to each other around the pivot axis. For example, as an example, such "hingedly connected" can be achieved by providing a pivot axis between the two parts to be connected to form the pivot axis. Similarly, the crossbar assembly 1123 includes a first rod 1123a and a second rod 1123b. The first rod 1123a and the second rod 1123b cross each other and are connected to each other in a hinged manner at the intersection.

[0089] Each of the first rods 1122a and 1123a has two ends opposite to each other along the axial direction, and each of the second rods 1122b and 1123b also has two ends opposite to each other along the axial direction. Therefore, as shown in the figure, the ends of the first rods 1122a and 1123a are hingedly connected to the bottom end of the inner rod 1121b of the intermediate telescopic rod assembly 1121, and the ends of the second rods 1122b and 1123b are hingedly connected to the top end of the outer tube 1121a of the intermediate telescopic rod assembly 1121, so that when the left folding assembly 1120L is assembled in place in the frame 110, these hinge axes can be parallel to the Y-axis direction. It should be clear that when the left folding assembly 1120R is assembled in place in the frame 110, the hinge axis at the intersection of the two rods of the cross rod assembly 1123 is also parallel to the Y-axis direction. In addition, in Figure 7 The two free ends of the cross bar assembly 1122 and the two free ends of the cross bar assembly 1123 of the left folding assembly 1120R shown in the figure can be respectively connected to the top connecting piece 1113 and the bottom connecting piece 1114 of the left front pillar assembly 1110FL and the top connecting piece 1113 and the bottom connecting piece 1114' of the left rear pillar assembly 1110RL in an articulated manner. In this way, when the left folding assembly 1120L is assembled in place in the frame 110, these articulated axes are parallel to the Y-axis direction.

[0090] This construction of the left folding assembly 1120L can ensure that when the connection is in place, as the left rear pillar assembly 1110RL and the left front pillar assembly 1110FL approach each other in the X-axis direction, the first rod and the second rod of the cross rod assemblies 1122 and 1123 can pivot around their respective hinge axes, thereby increasing the length of the middle telescopic rod assembly 1121 and ultimately minimizing the space occupied by the left folding assembly 1120L in the X-axis direction.

[0091] A sliding sleeve 1124 capable of axially sliding back and forth is sleeved on the middle telescopic rod assembly 1121 of the left folding assembly 1120L, especially on the outer tube 1121 thereof. The sliding sleeve 1124 is used to connect the corresponding components of the bottom frame assembly 1140. In addition, a connecting seat 1125 is fixed to the bottom end of the inner rod 1121b of the middle telescopic rod assembly 1121. The connecting seat 1125 is used to connect the corresponding components of the bottom frame assembly 1140 or the components that cooperate with the bottom frame assembly 1140.

[0092] View now Figure 8 and 9The front folding assembly 1130F according to the present application is introduced. It should be clear to those skilled in the art that the front folding assembly 1130F is substantially the same as the rear folding assembly 1130R in terms of the main structure. Therefore, the following description of the front folding assembly 1130F is also applicable to the rear folding assembly 1130R. Figure 8 It has been shown in the figure that the front end folding assembly 1130F is connected to the left front pillar assembly 1110FL and the right front pillar assembly 1110FR. The front end folding assembly 1130F includes a foldable upper connecting beam 1131. The foldable upper connecting beam 1131 is composed of two left and right connecting beam sections 1131a and 1131b. The two connecting beam sections 1131a and 1131b are hinged at the ends connected to each other, so that the upper connecting beam 1131 can be folded around the hinge axis, that is, the two connecting beam sections 1131a and 1131b can pivot relative to each other around the hinge axis. At the same time, an upper cross bar and a diagonal rod are hinged at different positions at the free ends of the two connecting beam sections 1131a and 1131b, respectively. As shown in FIG. Figure 8 As shown, an upper cross bar 1132a and an inclined rod 1133a are hinged at different positions at the free end of the connecting beam section 1131a, and an upper cross bar 1132b and an inclined rod 1133b are hinged at different positions at the free end of the connecting beam section 1131b. When observed in the ZY plane, these upper cross bars, inclined rods and connecting beam sections are distributed in a mirror-symmetrical manner. The ends of the upper cross bar 1132a and the inclined rod 1133a opposite to the ends hinged to the connecting beam 1131 are respectively connected to the top connecting piece 1113 and the bottom connecting piece 1114 of the right front pillar assembly 1110FR in a hinged manner. Similarly, the ends of the upper cross bar 1132b and the inclined rod 1133b opposite to the ends hinged to the connecting beam 1131 are respectively connected to the top connecting piece 1113 and the bottom connecting piece 1114 of the left front pillar assembly 1110FL in a hinged manner. The length of each upper cross bar 1132a or 1132b is significantly shorter than the length of the corresponding diagonal tie rod 1133a or 1133b. In addition, each connecting beam section 1131a and 1131b is roughly arc-shaped, so that the upper connecting beam 1131 of the front end folding assembly 1130F in the unfolded state is also arc-shaped.

[0093] In addition, the front folding assembly 1130F further includes a base 1134 located below the upper connecting beam 1131. In addition, the front folding assembly 1130F further includes two bottom support beams 1135a and 1135b, namely a first bottom support beam 1135a and a second bottom support beam 1135b. One end of each bottom support beam 1135a and 1135b is respectively connected to the bottom end connecting piece 1114 of the right front pillar assembly 1110FR and the bottom end connecting piece 1114 of the left front pillar assembly 1110FL in an articulated manner. In addition, the two bottom support beams 1135a and 1135b are also articulated to each other, and the axis of the articulation is located between the upper connecting beam 1131 and the base 1134 in the Z-axis direction. At the same time, the two lower cross bars 1136a and 1136b are respectively connected between the two bottom support beams 1135a and 1135b and the sliding rings 1118 of the right front pillar assembly 1110FR and the left front pillar assembly 1110FL. For example, one end of the lower cross bar 1136a is connected to the bottom support beam 1135a in a hinged manner, and the other opposite end is connected to the sliding ring 1118 of the right front pillar assembly 1110FR in a hinged manner; one end of the lower cross bar 1136b is connected to the bottom support beam 1135b in a hinged manner, and the other opposite end is connected to the sliding ring 1118 of the left front pillar assembly 1110FL in a hinged manner. At the same time, the two bottom connecting beams 1137a and 1137b are respectively connected between the base 1134 and the two bottom support beams 1135a and 1135b. For example, one end of the bottom connecting beam 1137a is connected to the base 1134 in an articulated manner, and the other opposite end is connected to the bottom support beam 1135a in an articulated manner; one end of the bottom connecting beam 1137b is connected to the base 1134 in an articulated manner, and the other opposite end is connected to the bottom support beam 1135b in an articulated manner. It should be clear that on the same bottom support beam, the hinge positions of the corresponding lower crossbars and the corresponding bottom connecting beams are staggered from each other. Taking the bottom support beam 1135a as an example, it can be seen that the hinge position of the lower crossbar 1136a on the bottom support beam 1135a is staggered from the hinge position of the bottom connecting beam 1137a on the bottom support beam 1135a. Therefore, when observed in the ZY plane, these upper crossbars and diagonal rods and connecting beam sections of the front folding assembly 1130F, these bottom support beams, lower crossbars, bottom connecting beams and bases are distributed in mirror symmetry.

[0094] See instead Fig. 9The rod connection structure design of the front folding assembly 1130F ensures that a plurality of symmetrically distributed triangular connection structures are formed between the two column assemblies. These triangular connection structures can ensure the structural firmness of the front folding assembly 1130F when it is in the unfolded state. In particular, the Z-axis position of the lower ends of the two inclined rods 1133a and 1133b of the front folding assembly 1130F connected to the two column assemblies 1110FL and 1110FR always remains unchanged whether in the unfolded state, the stowed state, or the intermediate transition state between the two, which ensures the enhanced structural firmness of the front folding assembly 1130F.

[0095] See further Figure 2 For the front folding assembly 1130F, a base 1134 thereof is connected to a tie rod assembly 1170. For example, the lower end of the tie rod assembly 1170 is pivotally connected to the base 1134 of the front folding assembly 1130F, so that the tie rod assembly 1170 can pivot about a pivot axis parallel to the Y axis. The opposite free ends of the tie rod assembly 1170 are designed to be grasped by the user's hands so as to be able to pull the folding bicycle 100. In addition, a holder 1180 capable of holding the tie rod assembly 1170 is provided on the upper connecting beam 1131 of the front folding assembly 1130F, especially on one of the left and right connecting beam sections 1131a, 1131b thereof, so that the tie rod assembly 1170 can be selectively engaged with the holder to remain fixed relative to the bicycle frame 110.

[0096] Fig.11 A pull rod assembly 1170 according to an embodiment of the present application is schematically shown. The pull rod assembly 1170 includes two outer rods 1172 fixed at intervals from each other and an inner double rod 1171 installed between the two outer rods 1172 and capable of linear sliding relative to the outer rods 1172, wherein the inner double rod 1171 is formed by two rods that are parallel to each other and fixed closely. Support frames are fixed to the two ends of the two outer rods 1172, wherein the lower support member forms the lower end, i.e., the hinge seat 1173, for fixing with the front folding assembly 1130F. In addition, a guide frame 1174 is fixed to the end of the inner double rod 1171 that extends into the two outer rods 1172, and the opposite end forms a handle for the user of the pull rod assembly 1170 to hold. The inner double rod 1171 passes through the support frame at the upper end of the two outer rods 1172 and is guided by it. This design of the tie rod assembly 1170 can ensure that the length installation requirements of the tie rod assembly 1170 are changed, while improving the strength of bearing force. In addition, the guide frame 1174 is provided with a locking structure, which can be selectively locked with the hinge seat 1173 when approaching or contacting the hinge seat 1173. When the tie rod assembly 1170 is in its shortest state, the inner double rod 1171 can at least partially extend from between the two outer rods 1172 in the length direction.

[0097] Fig.12 An exploded perspective view of the holder 1180 is shown. The holder 1180 includes a holder 1181, which is used to be fixed on the upper connecting beam 1131 of the front folding assembly 1130F, especially on one of the two connecting beam sections 1131a, 1131b on the left and right thereof, via a fastener such as a screw. A cavity 1182 is formed in the holder 1181 for accommodating the coil springs 1183a, 1183b and the clips 1184a, 1184b described below. The clips 1184a, 1184b are installed in the cavity 1182 in a pivotable manner, and the pivot axes of the two are spaced apart from each other. In addition, the two coil springs 1183a, 1183b are respectively arranged in the cavity 1182 to apply a force between the holder 1181 and the clips 1184a, 1184b that tends to cause the clips 1184a, 1184b to pivot. After the holder 1181 is installed in place and the frame 110 is in the expanded state, the pivot axis of the clips 1184a, 1184b is parallel or approximately parallel to the Z-axis direction. Each clip 1184a, 1184b is formed with a plurality of teeth near its respective pivot axis so that the teeth can mesh with each other between the two pivot axes. In addition, each clip 1184a, 1184b is formed with a protrusion opposite to its respective teeth so that the protrusions can be blocked by the edge around the cavity 1182 accordingly to prevent them from running out. Each clip 1184a, 1184b is formed with a partially cylindrical inner surface having a central axis. As the clips 1184a, 1184b pivot, the vertical distance between the central axes of their partially cylindrical inner surfaces can increase or decrease. When it is necessary to insert the inner double rod 1171, the two clips 1184a, 1184b can be pivoted outwardly about their respective pivot axes so that the vertical distance between the central axes of their partially cylindrical inner surfaces is maximized, thereby facilitating the insertion of the inner double rod 1171 between the two clips 1184a, 1184b. Then, the two clips 1184a, 1184b can be pivoted inwardly about their respective pivot axes while their partially cylindrical inner surfaces contact the corresponding rods of the inner double rod 1171 and the vertical distance between the central axes of their partially cylindrical inner surfaces is minimized. At this time, the vertical distance between the central axes of their partially cylindrical inner surfaces is slightly less than the vertical distance between the central axes of the two rods of the inner double rod 1171, so that the inner double rod 1171 can be held in place relative to the retainer 1180 while the corresponding teeth remain engaged. When necessary, the two clips 1184a and 1184b are pivoted outward again about their respective pivot axes so that the vertical distance between the central axes of their partially cylindrical inner surfaces reaches the maximum, and the inner double rod member 1171 can be smoothly removed.

[0098] The position where the holder 1180 is installed on the front folding assembly 1130F allows it to be exposed when the frame 110 is in the storage state, so that the pull rod assembly 1170 can be fixed to the holder 1180 via its inner double rod member 1171, so that the user can pull the frame 110 in the storage state by hand to facilitate the movement of the folding bicycle 100. At this time, the wheel assemblies 120RL and 120RR serve as wheel assemblies in contact with the ground, while the wheel assemblies 120FL and 120FR do not contact the ground. Therefore, the mobility of the folding bicycle 100 in the storage state is improved.

[0099] The following is the attached Fig.10 An example of a chassis assembly 1140 according to the present application is introduced. As shown in the figure, the chassis assembly 1140 includes a first chassis half assembly 1140a and a second chassis half assembly 1140b, which are hinged to each other, and the first chassis half assembly 1140a is hinged to the column assemblies 1110FL, 1110FR and the front folding assembly 1130F, and the second chassis half assembly 1140b is hinged to the column assemblies 1110RL, 1110RR and the rear folding assembly 1130R; in addition, the chassis assembly 1140 also forms a mating relationship with the side folding assemblies 1120L, 1120R. The first chassis half assembly 1140a and the second chassis half assembly 1140b are hinged to form a pivot axis 1140O, so that the first chassis half assembly 1140a and the second chassis half assembly 1140b can pivot relative to each other around the pivot axis 1140O. In addition, the first chassis half assembly 1140a is hinged to the column assemblies 1110FL, 1110FR and the front folding assembly 1130F in a manner of forming a pivot axis 1140Oa, so that the first chassis half assembly 1140a can pivot around the pivot axis 1140Oa relative to the column assemblies 1110FL, 1110FR and the front folding assembly 1130F. In addition, the second chassis half assembly 1140b is hinged to the column assemblies 1110RL, 1110RR and the rear folding assembly 1130R in a manner of forming a pivot axis 1140Ob, so that the second chassis half assembly 1140b can pivot around the pivot axis 1140Ob relative to the column assemblies 1110RL, 1110RR and the rear folding assembly 1130R. When the frame 110 is in the deployed state, the pivot axes 1140O, 1140Oa, 1140Ob are parallel to each other and substantially parallel to the XY plane.

[0100] The first chassis half assembly 1140a includes a first rod 1141a, a second rod 1142a, a third rod 1143a, and a fourth rod 1144a, wherein the first rod 1141a and the second rod 1142a intersect each other and are hinged to each other at the intersection, and the third rod 1143a and the fourth rod 1144a intersect each other and are hinged to each other at the intersection. The first end of the first rod 1141a is configured to be connected to the bottom end connection member 1114 of the left front pillar assembly 1110FL in an articulated manner. For example, a first connection member 1145 for forming an articulated connection is installed at the first end of the first rod 1141a. The first connection member 1145 can be pivotally connected to the bottom end connection member 1114 of the left front pillar assembly 1110FL. At the same time, the first end of the first rod 1141a itself can also be independently pivoted relative to the first connection member 1145.

[0101] The first end of the second rod 1142a and the first end of the third rod 1143a are simultaneously connected to the second connecting member 1146 in a pivotable manner, so that the connection parts of the second rod 1142a and the third rod 1143a with the second connecting member 1146 are staggered from each other, and the second rod 1142a and the third rod 1143a are each pivotable relative to the second connecting member 1146. At the same time, the second connecting member is also pivotably connected to the base 1134 of the front folding assembly 1130F. The first end of the fourth rod 1144a is pivotably connected to the third connecting member 1147, and at the same time, the first end of the fourth rod 1144a is pivotably connected to the bottom connecting member 1114 of the right front pillar assembly 1110FR by means of the third connecting member 1147. That is, the first connecting member 1145, the second connecting member 1146, and the third connecting member 1147 together define a pivot axis 1140Oa about which the first chassis half assembly 1140a can pivot relative to the column assemblies 1110FL, 1110FR and the front folding assembly 1130F.

[0102] Similarly, the first ends of the first rod 1141b, the second rod 1142b, the third rod 1143b and the fourth rod 1144b of the second chassis half assembly 1140b are respectively provided with a first connecting member 1145, a second connecting member 1146 and a third connecting member 1147, and are respectively pivotally connected to the column assembly 1110RL, the rear end folding assembly 1130R and the column assembly 1110RR in a manner similar to the first chassis half assembly 1140a, so that these first connecting members 1145, the second connecting member 1146 and the third connecting member 1147 together define a pivot axis 1140Ob around which the second chassis half assembly 1140b can pivot relative to the column assemblies 1110RL, 1110RR and the rear end folding assembly 1130R.

[0103] In addition, it should be clear to those skilled in the art that, since these connectors are respectively connected to the corresponding column assemblies and the end folding assemblies, they can move relatively close to or away from each other as the corresponding assemblies are contracted or expanded.

[0104] For the first chassis half assembly 1140a, the opposite second ends of the first rod 1141a and the opposite second ends of the fourth rod 1144a are simultaneously connected to the middle folding connection 11410 in an articulated manner. The opposite second ends of the second rod 1142a are connected to the fourth connection 1148 in an articulated manner, and the opposite second ends of the third rod 1143a are connected to the fifth connection 1149 in an articulated manner. Similarly, the opposite second ends of the first rod 1141b and the fourth rod 1144b of the second chassis half assembly 1140b are simultaneously connected to the middle folding connection 11410 in an articulated manner, and the opposite second ends of the second rod 1142b are connected to the fourth connection 1148 in an articulated manner, and the opposite second ends of the third rod 1143b are connected to the fifth connection 1149 in an articulated manner. The fourth connecting member 1148, the middle folding connecting member 11410 and the fifth connecting member 1149 of the first chassis half assembly 1140a and the second chassis half assembly 1140b are respectively hinged to each other, thereby defining together a pivot axis 1140O about which the first chassis half assembly 1140a and the second chassis half assembly 1140b can pivot relative to each other. It should be clear to those skilled in the art that the axes about which the rods connected to the above-mentioned connecting members 1145, 1146, 1147, 1148, 1149 and 11410 pivot relative to the corresponding connecting members are not coplanar with the axes about which these connecting members pivot relative to other corresponding components, that is, these pivoting movements can be performed independently of each other.

[0105] The fourth connecting member 1148 and the fifth connecting member 1149 of the bottom frame assembly 1140, which are located opposite to each other and are hinged together, are also connected to the corresponding sliding sleeves 1124 of the side folding assemblies 1120L and 1120R. Fig.15A , 15B, the following describes the matching connection mode between the fourth connecting member 1148 and the fifth connecting member 1149 of the base frame assembly 1140 and the sliding sleeve 1124. It should be clear to those skilled in the art that the same content applies to the side folding assembly 1120L. The hinge axis of the fourth connecting member 1148 and the fifth connecting member 1149, which are hinged to each other, is fixed relative to the sliding sleeve 1124 that is slidably arranged on the middle telescopic rod assembly 1121, especially on its outer tube 1121. Therefore, the hinge axis of the fourth connecting member 1148 and the fifth connecting member 1149, which are hinged to each other, can move with the sliding sleeve 1124, that is, the hinge axis is limited to only being able to move in a straight line along the axial direction of the middle telescopic rod assembly 1121 of the side folding assembly 1120R.

[0106] In addition, if Fig. 15B As shown, an auxiliary support crossbar assembly 1150 is also provided between the two folding assemblies 1120L and 1120R. Figure 5 , the auxiliary support cross bar assembly 1150 includes a first rod 1150a and a second rod 1150b of equal length. The first and second rods 1150a, 1150b are hinged to each other via corresponding connecting members at first ends close to each other. In addition, the opposite second ends of the first rod 1150a and the second rod 1150b of the auxiliary support cross bar assembly 1150 are hinged to the connecting seat 1125 of the folding assembly 1120L, 1120R. The auxiliary support cross bar assembly 1150 is configured so that when the frame 110 is in the unfolded state, the auxiliary support cross bar assembly 1150 is located below the chassis assembly 1140. Therefore, when the frame 110 is in the unfolded state, the chassis assembly 1140 can be supported on the auxiliary support cross bar assembly 1150, especially its corresponding connecting member, via its intermediate folding connecting member 11410. In addition, when the vehicle frame 110 is in the unfolded state, because the inner rods 1121b of the side folding assemblies 1120L and 1120R are retracted into the outer tube 1121a in a manner that only the connecting seat 1125 is exposed, the bottom frame assembly 1140 can also be supported on the auxiliary supporting cross bar assembly 1150 via the fourth connecting member 1148 and the fifth connecting member 1149 that are hinged to each other. Such a design can ensure that the bottom frame assembly 1140 can bear a greater weight, thereby improving the overall load-bearing capacity of the vehicle frame 110.

[0107] like Figure 2As shown, the frame 110 further includes an auxiliary deployment bracket 1190. The auxiliary deployment bracket 1190 can be constructed in a similar manner to the push handle assembly 1160, that is, the auxiliary deployment bracket 1190 can be composed of a plurality of rods hinged to each other, so that the length of the projection of the auxiliary deployment bracket 1190 in the XY plane can be shortened or extended as needed. In addition, both ends of the auxiliary deployment bracket 1190 can be hingedly connected to the push handle rod assembly 1115 of the column assembly 1110RL, 1110RR. Therefore, when the frame 110 is in the deployed state, the auxiliary deployment bracket 1190 can be pivoted relative to the column assembly 1110RL, 1110RR, so that when the passenger is located in the frame 110, the auxiliary deployment bracket 1190 can be pivoted to a substantially horizontal position as needed, which is convenient for the passenger's leg support and improves the passenger's riding comfort. It should be clear that in an alternative embodiment, a locking structure for cooperating with a seat belt worn by an occupant of the folding vehicle may also be provided on the upper connecting beam 1131 of the front folding assembly 1130F, such as a locking button for receiving a seat belt buckle.

[0108] The fabric assembly 130 may be composed of multiple pieces of tarpaulin, for example, with hook and loop fasteners at required positions to facilitate connection with rods of corresponding components. For example, after the frame 110 is assembled in place, the fabric assembly 130 may be connected to the above-mentioned components to form a Figure 1 The folding bicycle 100 shown in FIG. 1 can be folded and stored as shown in FIG. Figure 2 The expanded state shown is as follows Figure 4 The state shown in the figure is finally folded into Figure 3 In the stowed state shown, during this process, each component itself shrinks in different directions accordingly and each component moves relatively close to each other in different directions, thereby ensuring that the volume occupied by the frame 110 in the stowed state can be minimized. In addition, in the unfolded state, due to the special design of each component constituting the frame 110, it can be ensured that the frame as a whole is more solid and durable.

[0109] Although the specific embodiments of the present application are described in detail herein, they are provided only for the purpose of explanation and should not be considered to limit the scope of the present application. In addition, it should be clear to those skilled in the art that the various embodiments described in this specification can be used in combination with each other. Various replacements, changes and modifications can be conceived without departing from the spirit and scope of the present application.

Claims

1. A folding bicycle (100), the folding bicycle (100) having a frame (110), the frame (110) comprising: A left front pillar assembly (1110FL), a right front pillar assembly (1110FR), a left rear pillar assembly (1110RL), and a right rear pillar assembly (1110RR), each of the pillar assemblies being provided with a top connecting piece (1113) and a bottom connecting piece (1114 or 1114') whose axial distance can be changed; A front folding assembly (1130F) connected to the top connecting piece (1113) and the bottom connecting piece (1114) of the left front pillar assembly (1110FL) and the right front pillar assembly (1110FR), respectively, and capable of being folded in the width direction of the vehicle frame (110); A rear end folding assembly (1130R) connected to the top end connecting piece (1113) and the bottom end connecting piece (1114') of the left rear pillar assembly (1110RL) and the right rear pillar assembly (1110RR) respectively and capable of being folded in the width direction of the vehicle frame (110); A left folding assembly (1120L) connected to the top connecting piece (1113) and the bottom connecting piece (1114 or 1114') of the left front pillar assembly (1110FL) and the left rear pillar assembly (1110RL) respectively and capable of being folded in the length direction of the vehicle frame (110); A right folding assembly (1120R) connected to the top connecting piece (1113) and the bottom connecting piece (1114 or 1114') of the right front pillar assembly (1110FR) and the right rear pillar assembly (1110RR) respectively and capable of being folded in the length direction of the frame (110); An underframe assembly (1140) connected to the bottom end connecting pieces (1114 or 1114') of the left front pillar assembly (1110FL), the right front pillar assembly (1110FR), the left rear pillar assembly (1110RL), and the right rear pillar assembly (1110RR), the front folding assembly (1130F), and the rear folding assembly (1130R), respectively, and cooperating with the left folding assembly (1120L) and the right folding assembly (1120R), and capable of being folded simultaneously in the width direction and the length direction of the vehicle frame (110); Each of the left front column assembly (1110FL), the right front column assembly (1110FR), the left rear column assembly (1110RL), and the right rear column assembly (1110RR) comprises a telescopic rod assembly, wherein the telescopic rod assembly comprises an inner rod (1112) and an outer rod (1111) of a hollow design, wherein the inner rod (1112) is arranged in the outer rod (1111) in a manner that it can slide along the axial direction, a corresponding top connecting piece (1113) is fixed to the upper end of the inner rod (1112), and a corresponding bottom connecting piece (1114 or 1114') is fixed to the lower end of the outer rod (1111), and when the folding vehicle (100) is folded and stored, the axial length position of each of the bottom connecting pieces (1114 or 1114') relative to the corresponding column assembly remains unchanged, and the front folding assembly (1130F) comprises: The foldable upper connecting beam (1131) is composed of two left and right connecting beam sections (1131a, 1131b) hinged to each other, wherein the left connecting beam section (1131b) is hingedly connected to an upper cross bar (1132b) and a diagonal tie rod (1133b), the upper cross bar (1132b) is also hingedly connected to the top connecting piece (1113) of the left front column assembly (1110FL), and the diagonal tie rod (1133b) is also hingedly connected to the left front column assembly (1110FL). The right connecting beam section (1131a) is connected to a top connecting piece (1113) of the right front column assembly (1110FR) in an articulated manner, the right connecting beam section (1131a) is connected to an upper cross bar (1132a) and an inclined tie rod (1133a) in an articulated manner, the upper cross bar (1132a) is also connected to the top connecting piece (1113) of the right front column assembly (1110FR) in an articulated manner, and the inclined tie rod (1133a) is also connected to the bottom connecting piece (1114) of the right front column assembly (1110FR) in an articulated manner; A base (1134) located below the upper connecting beam (1131); a first bottom support beam (1135a) and a second bottom support beam (1135b), wherein the first bottom support beam (1135a) and the second bottom support beam (1135b) each have a first end connected to each other in a hinged manner between the upper connecting beam (1131) and the base (1134); and an opposite second end, wherein the second end of the first bottom support beam (1135a) is connected to the bottom end connecting piece (1114) of the right front pillar assembly (1110FR) in a hinged manner, and the second end of the second bottom support beam (1135b) is connected to the bottom end connecting piece (1114) of the left front pillar assembly (1110FL) in a hinged manner; a first bottom connecting beam (1137a) and a second bottom connecting beam (1137b), wherein the first bottom connecting beam (1137a) is connected between the first bottom supporting beam (1135a) and the base (1134) in an articulated manner, and the second bottom connecting beam (1137b) is connected between the second bottom supporting beam (1135b) and the base (1134) in an articulated manner; A first lower cross bar (1136a) and a second lower cross bar (1136b), wherein the first lower cross bar (1136a) is connected in an articulated manner between the first bottom support beam (1135a) and a sliding ring (1118) of the right front column assembly (1110FR) that can slide linearly relative to its outer rod (1111), and the second lower cross bar (1136b) is connected in an articulated manner between the second bottom support beam (1135b) and a sliding ring (1118) of the left front column assembly (1110FL) that can slide linearly relative to its outer rod (1111).

2. The folding bicycle (100) according to claim 1, characterized in that: The rear end folding assembly (1130R) comprises: A foldable upper connecting beam (1131) is composed of two left and right connecting beam sections (1131a, 1131b) hinged to each other, wherein the left connecting beam section (1131b) is hingedly connected to an upper cross bar (1132b) and a diagonal tie rod (1133b), the upper cross bar (1132b) is also hingedly connected to the top connecting piece (1113) of the left rear column assembly (1110RL), and the diagonal tie rod (1133b) is also hingedly connected to the left rear column assembly (1110RL). L) is connected in an articulated manner to a bottom end connection piece (1114') of the right rear column assembly (1110RR); the right connecting beam section (1131a) is connected in an articulated manner to an upper cross bar (1132a) and an inclined tie rod (1133a); the upper cross bar (1132a) is also connected in an articulated manner to a top end connection piece (1113) of the right rear column assembly (1110RR); and the inclined tie rod (1133a) is also connected in an articulated manner to a bottom end connection piece (1114') of the right rear column assembly (1110RR); A base (1134) located below the upper connecting beam (1131); a first bottom support beam (1135a) and a second bottom support beam (1135b), wherein the first bottom support beam (1135a) and the second bottom support beam (1135b) respectively have a first end connected to each other in a hinged manner between the upper connecting beam (1131) and the base (1134); and an opposite second end, wherein the second end of the first bottom support beam (1135a) is connected to the bottom end connecting piece (1114') of the right rear pillar assembly (1110RR) in a hinged manner, and the second end of the second bottom support beam (1135b) is connected to the bottom end connecting piece (1114') of the left rear pillar assembly (1110RL) in a hinged manner; a first bottom connecting beam (1137a) and a second bottom connecting beam (1137b), wherein the first bottom connecting beam (1137a) is connected between the first bottom supporting beam (1135a) and the base (1134) in an articulated manner, and the second bottom connecting beam (1137b) is connected between the second bottom supporting beam (1135b) and the base (1134) in an articulated manner; A first lower cross bar (1136a) and a second lower cross bar (1136b), wherein the first lower cross bar (1136a) is connected in an articulated manner between the first bottom support beam (1135a) and a sliding ring (1118) of the right rear column assembly (1110RR) that can slide linearly relative to its outer rod (1111), and the second lower cross bar (1136b) is connected in an articulated manner between the second bottom support beam (1135b) and a sliding ring (1118) of the left rear column assembly (1110RL) that can slide linearly relative to its outer rod (1111).

3. The folding bicycle (100) according to claim 2, characterized in that: The left folding assembly (1120L) comprises a middle telescopic rod assembly (1121) and a first cross rod assembly (1122) and a second cross rod assembly (1123) which are hingedly connected to opposite ends of the middle telescopic rod assembly (1121). The intermediate telescopic rod assembly (1121) comprises an inner rod (1121b) and an outer tube (1121a) sleeved on the inner rod (1121b) so as to be linearly movable relative to the inner rod (1121b); the lower end of the inner rod (1121b) defines one end hinged to the first cross rod assembly (1122) and the second cross rod assembly (1123); the upper end of the outer tube (1121a) defines the other end hinged to the first cross rod assembly (1122) and the second cross rod assembly (1123); The first cross rod assembly (1122) includes a first rod (1122a) and a second rod (1122b) that cross each other, and the first rod (1122a) and the second rod (1122b) are hinged to each other at the intersection. The first rod (1122a) of the first cross rod assembly (1122) has a first end that is hingedly connected to the top end connection piece (1113) of the left front column assembly (1110FL) and an opposite second end that is hingedly connected to the middle telescopic rod assembly (1121). The second rod (1122b) of the first cross rod assembly (1122) has a first end that is hingedly connected to the bottom end connection piece (1114) of the left front column assembly (1110FL) and an opposite second end that is hingedly connected to the middle telescopic rod assembly (1121). The second cross rod assembly (1123) includes a first rod (1123a) and a second rod (1123b) that cross each other, and the first rod (1123a) and the second rod (1123b) are hinged to each other at the intersection. The first rod (1123a) of the second cross rod assembly (1123) has a first end connected to the top end connecting piece (1113) of the left rear pillar assembly (1110RL) in a hinged manner and an opposite second end connected to the middle telescopic rod assembly (1121) in a hinged manner. The second rod (1123b) of the second cross rod assembly (1123) has a first end connected to the bottom end connecting piece (1114') of the left rear pillar assembly (1110RL) in a hinged manner and an opposite second end connected to the middle telescopic rod assembly (1121) in a hinged manner.

4. The folding bicycle (100) according to claim 3, characterized in that: The right folding assembly (1120R) comprises a middle telescopic rod assembly (1121) and a first cross rod assembly (1122) and a second cross rod assembly (1123) which are hingedly connected to opposite ends of the middle telescopic rod assembly (1121). The middle telescopic rod assembly (1121) of the right folding assembly (1120R) comprises an inner rod (1121b) and an outer tube (1121a) sleeved on the inner rod (1121b) so as to be able to move linearly relative to the inner rod (1121b); the lower end of the inner rod (1121b) defines one end hinged to the first cross rod assembly (1122) of the right folding assembly (1120R) and the second cross rod assembly (1123) of the right folding assembly (1120R); the upper end of the outer tube (1121a) defines the other end hinged to the first cross rod assembly (1122) of the right folding assembly (1120R) and the second cross rod assembly (1123) of the right folding assembly (1120R); The first cross rod assembly (1122) of the right folding assembly (1120R) includes a first rod (1122a) and a second rod (1122b) that cross each other, and the first rod (1122a) and the second rod (1122b) are hinged to each other at the intersection, the first rod (1122a) of the first cross rod assembly (1122) has a first end connected to the top end connection piece (1113) of the right front column assembly (1110FR) in a hinged manner and an opposite second end connected to the middle telescopic rod assembly (1121) in a hinged manner, the second rod (1122b) of the first cross rod assembly (1122) of the right folding assembly (1120R) has a first end connected to the bottom end connection piece (1114) of the right front column assembly (1110FR) in a hinged manner and an opposite second end connected to the middle telescopic rod assembly (1121) in a hinged manner, The second cross rod assembly (1123) of the right folding assembly (1120R) includes a first rod (1123a) and a second rod (1123b) that cross each other, and the first rod (1123a) and the second rod (1123b) are hinged to each other at the intersection, the first rod (1123a) of the second cross rod assembly (1123) has a first end connected to the top end connecting piece (1113) of the right rear pillar assembly (1110RR) in a hinged manner and an opposite second end connected to the middle telescopic rod assembly (1121) in a hinged manner, and the second rod (1123b) of the second cross rod assembly (1123) of the right folding assembly (1120R) has a first end connected to the bottom end connecting piece (1114') of the right rear pillar assembly (1110RR) in a hinged manner and an opposite second end connected to the middle telescopic rod assembly (1121) in a hinged manner.

5. The folding bicycle (100) according to claim 4, characterized in that: The base frame assembly (1140) includes: The first chassis half assembly (1140a) and the second chassis half assembly (1140b) are hinged to each other, and the first chassis half assembly (1140a) is hingedly connected to the bottom end connecting piece (1114) of the left front column assembly (1110FL), the right front column assembly (1110FR) and the base (1134) of the front folding assembly (1130F), and the second chassis half assembly (1140b) is hingedly connected to the bottom end connecting piece (1114') of the left rear column assembly (1110RL), the right rear column assembly (1110RR) and the base (1134) of the rear folding assembly (1130R).

6. The folding bicycle (100) according to claim 5, characterized in that: The first chassis half assembly (1140a) includes a first rod (1141a), a second rod (1142a), a third rod (1143a) and a fourth rod (1144a), wherein the first rod (1141a) and the second rod (1142a) intersect each other and are hinged to each other at the intersection, and the third rod (1143a) and the fourth rod (1144a) intersect each other and are hinged to each other at the intersection; The second chassis half assembly (1140b) includes a first rod (1141b), a second rod (1142b), a third rod (1143b) and a fourth rod (1144b), wherein the first rod (1141b) and the second rod (1142b) intersect each other and are hinged to each other at the intersection, and the third rod (1143b) and the fourth rod (1144b) intersect each other and are hinged to each other at the intersection.

7. The folding bicycle (100) according to claim 6, characterized in that: The first rod (1141a) of the first chassis half assembly (1140a) has a first end connected to the bottom end connecting member (1114) of the left front pillar assembly (1110FL) in an articulated manner, the second rod (1142a) and the third rod (1143a) of the first chassis half assembly (1140a) each have a first end connected to the base (1134) of the front folding assembly (1130F) in an articulated manner, and the fourth rod (1144a) of the first chassis half assembly (1140a) has a first end connected to the bottom end connecting member (1114) of the right front pillar assembly (1110FR) in an articulated manner; The first rod (1141b) of the second chassis half assembly (1140b) has a first end connected to the bottom end connecting member (1114') of the left rear pillar assembly (1110RL) in an articulated manner, the second rod (1142b) and the third rod (1143b) of the second chassis half assembly (1140b) each have a first end connected to the base (1134) of the rear end folding assembly (1130R) in an articulated manner, and the fourth rod (1144b) of the second chassis half assembly (1140b) has a first end connected to the bottom end connecting member (1114') of the right rear pillar assembly (1110RR) in an articulated manner; The first chassis half assembly (1140a) and the second chassis half assembly (1140b) are hinged to each other via opposite second ends of their corresponding first rods (1141a, 1141b), second rods (1142a, 1142b), third rods (1143a, 1143b) and fourth rods (1144a, 1144b).

8. The folding bicycle (100) according to claim 7, characterized in that: The first ends of the first rod (1141a), the second rod (1142a), the third rod (1143a) and the fourth rod (1144a) of the first chassis half assembly (1140a) and the left front pillar assembly (1110FL), the front end folding assembly (1130F), the right front pillar assembly (1110FR) define a pivot axis (1140Oa) between the first rod (1141b) and the second chassis half assembly (1140b) ), the first ends of the second rod (1142b), the third rod (1143b) and the fourth rod (1144b) and the pivot axis (1140Ob) defined between the left rear pillar assembly (1110RL), the rear end folding assembly (1130R), the right rear pillar assembly (1110RR), and the pivot axis (1140O) defined between the first chassis half assembly (1140a) and the second chassis half assembly (1140b) are parallel to each other.

9. The folding bicycle (100) according to claim 8, characterized in that: The second end of the second rod (1142a) of the first chassis half assembly (1140a) and the second end of the second rod (1142b) of the second chassis half assembly (1140b) are connected in a hinged manner to a sliding sleeve (1124) which is arranged on the middle telescopic rod assembly (1121) of the left folding assembly (1120L) so as to be linearly slidable; The second end of the third rod (1143a) of the first chassis half assembly (1140a) and the second end of the third rod (1143b) of the second chassis half assembly (1140b) are hingedly connected to a sliding sleeve (1124) that is linearly slidably arranged on the middle telescopic rod assembly (1121) of the right folding assembly (1120R).

10. The folding bicycle (100) according to claim 9, characterized in that: The sliding sleeve (1124) of the left folding component (1120L) is sleeved on the outer tube (1121a) of the middle telescopic rod component (1121) of the left folding component (1120L); the sliding sleeve (1124) of the right folding component (1120R) is sleeved on the outer tube (1121a) of the middle telescopic rod component (1121) of the right folding component (1120R).

11. The folding bicycle (100) according to claim 10, characterized in that: It also includes an auxiliary support cross bar assembly (1150) to provide support for the frame (110) below the base assembly (1140) when the frame (110) is in an unfolded state, and the auxiliary support cross bar assembly (1150) includes a first rod (1150a) and a second rod (1150b), the first rod (1150a) and the second rod (1150b) each having a first end hinged to each other, the opposite second end of the first rod (1150a) being hingedly connected to the lower end of the inner rod (1121b) of the middle telescopic rod assembly (1121) of the left folding assembly (1120L); the opposite second end of the second rod (1150b) being hingedly connected to the lower end of the inner rod (1121b) of the middle telescopic rod assembly (1121) of the right folding assembly (1120R).

12. The folding bicycle (100) according to claim 11, characterized in that: Each of the left rear column assembly (1110RL) and the right rear column assembly (1110RR) includes a handlebar assembly (1115) fixed in parallel with its telescopic rod assembly, and the wheel assembly (120RL) connected to the left rear column assembly (1110RL) and the wheel assembly (120RR) connected to the right rear column assembly (1110RR) have a common rotation axis, and the common rotation axis is located between the longitudinal center axis of the telescopic rod assembly of the left rear column assembly (1110RL) and the longitudinal center axis of the handlebar assembly (1115) thereof, and between the longitudinal center axis of the telescopic rod assembly of the right rear column assembly (1110RR) and the longitudinal center axis of the handlebar assembly (1115) thereof.

13. The folding bicycle (100) according to claim 12, characterized in that: It also includes a handlebar assembly (1160) that can be folded in the width direction of the frame (110), and the handlebar assembly (1160) is respectively connected to the handlebar rod assembly (1115) of the left rear column assembly (1110RL) and the handlebar rod assembly (1115) of the right rear column assembly (1110RR) in a hinged manner.

14. The folding bicycle (100) according to claim 13, characterized in that: It also includes a pull rod assembly (1170), which includes a first end connected to the base (1134) of the front folding assembly (1130F) in a hinged manner and an opposite free second end for a user to hold.

15. The folding bicycle (100) according to claim 14, characterized in that: The pull rod assembly (1170) comprises two outer rods (1172) fixedly spaced apart from each other and an inner double rod member (1171) installed between the two outer rods (1172) and capable of linearly sliding relative to the outer rods (1172). A retaining frame (1180) is provided on the upper connecting beam (1131) of the front end folding assembly (1130F) to selectively engage and lock the inner double rod member (1171).

16. The folding bicycle (100) according to claim 15, characterized in that: The vehicle frame (110) also includes an auxiliary unfolding bracket (1190) that can be folded in the width direction of the frame (110), and the auxiliary unfolding bracket (1190) is respectively connected to the push handle bar assembly (1115) of the left rear column assembly (1110RL) and the right rear column assembly (1110RR) in a hinged manner near the bottom end connecting pieces (1114') of the left rear column assembly (1110RL) and the right rear column assembly (1110RR).

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