WO2022257066A1 - Folding cart - Google Patents

Abstract

Disclosed is a folding cart, 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-end connecting member and a bottom-end connecting member having changeable axial distances; a front-end folding assembly that is connected to the top-end connecting members and the bottom-end connecting members of the left front column assembly and the right front column assembly, separately, and can be folded in the width direction of a frame; a rear-end folding assembly; a left-side folding assembly; a right-side folding assembly; and a chassis assembly that can be folded in both the width and length directions of the frame.

Description

folding bike technical field

The present application relates to a foldable bicycle, in particular to a retractable foldable frame of the foldable bicycle.

Background technique

Folding bikes have a wide range of usage scenarios. For example, the folding car can help consign goods and/or even carry people when it is in the unfolded state; when the folding car is in the stowed state, it can occupy a smaller volume, so as to facilitate storage and transportation, such as being placed in the trunk of a family car. Therefore, especially the main requirement for a household folding bike is to hope that it can take up as little space as possible in the storage state but as strong and flexible as possible in the unfolded state, so as to facilitate carrying people or objects.

However, these two requirements for different states are often contradictory. Therefore, it is necessary for the designer to design a folding car that can be folded as much as possible in as many directions as possible but is strong and durable after being unfolded.

The load-bearing capacity of the bottom of the frame is usually less considered when designing a folding bike. However, for the carrying capacity of a folding bike, the load-bearing capacity of the bottom of the frame will significantly affect the amount of objects that can be accommodated. In addition, for a folding bike in a stored state, it usually needs to be pulled and moved by the user, so it is also very practical to consider how to increase the corresponding structural design to ensure the convenience of pulling and moving. In addition, other considerations of folding bikes, such as safety and comfort when carrying people, etc. also need to be considered.

Contents of the invention

The purpose of this application is to propose a novel folding bicycle, which can ensure the user to conveniently minimize the storage volume, and at the same time, when unfolded and used, the structure is firm, the load-bearing capacity is strong, the operation is convenient and the application is flexible.

According to one aspect of the present application, a folding bike is provided, the folding bike has a frame, and the frame includes:

Left front pillar assembly, right front pillar assembly, left rear pillar assembly, right rear pillar assembly, each of the pillar assemblies is provided with a top connector and a bottom connector whose axial distance can be changed;

A front-end folding assembly that is respectively connected to the top connector and the bottom connector of the left front pillar assembly and the right front pillar assembly and can be folded in the width direction of the vehicle frame;

a rear end folding assembly that is connected to the top connector and the bottom connector of the left rear pillar assembly and the right rear pillar assembly respectively, and can be folded in the width direction of the vehicle frame;

a left side folding assembly which is respectively connected to the top connector and the bottom connector of the left front pillar assembly and the left rear pillar assembly and can be folded in the length direction of the vehicle frame;

a right side folding assembly which is respectively connected to the top connector and the bottom connector of the right front pillar assembly and the right rear pillar assembly and can be folded along the length direction of the vehicle frame;

The top connecting piece and the bottom 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 An underframe assembly that is connected to the end connectors and cooperates with the left folding assembly and the right folding assembly, and can be folded simultaneously in the width direction and the length direction of the vehicle frame;

Each of the left front pillar assembly, the right front pillar assembly, the left rear pillar assembly, and the right rear pillar assembly includes a telescopic rod assembly, and the telescopic rod assembly includes an inner rod and a hollow outer rod, so The inner rod is arranged in the outer rod in a manner that can slide along the axial direction, the corresponding top end connector is fixed on the upper end of the inner rod, and the corresponding bottom end connector is fixed on the lower end of the outer rod, Moreover, during the process of folding and storing the folding bicycle, the axial length position of each bottom connecting member relative to the corresponding column assembly remains unchanged. Since the axial position of each bottom connecting member remains unchanged during the folding process of the vehicle frame, the overall firmness and bearing capacity of the vehicle frame are improved.

Optionally, the front folding assembly includes:

The foldable upper connecting beam is composed of two left and right connecting beam sections hinged to each other, wherein the left connecting beam section is hingedly connected with an upper horizontal bar and a diagonal tie rod, and the upper horizontal bar is also connected with the left front The top connector of the pillar assembly is hingedly connected and the diagonal stay is also hingedly connected with the bottom connector of the left front pillar assembly, and the right connecting beam section is hingedly connected with an upper bar and A diagonal stay rod, the upper horizontal bar is also hingedly connected to the top connector of the right front pillar assembly and the diagonal stay rod is also hingedly connected to the bottom connector of the right front pillar assembly;

a base located below the upper connecting beam;

The first bottom support beam and the second bottom support beam, each of the first bottom support beam and the second bottom support beam has a joint connected to each other in a hinged manner between the upper connecting beam and the base. a first end; and an opposite second end, the second end of the first bottom support beam is hingedly connected to the bottom end connector of the right front pillar assembly, and the second bottom support beam The second end of the second end is hingedly connected to the bottom end connector of the left front pillar assembly;

A first bottom connecting beam and a second bottom connecting beam, the first bottom connecting beam is hingedly connected between the first bottom supporting beam and the base, and the second bottom connecting beam is hinged connected between the second bottom support beam and the base;

A first lower cross bar and a second lower cross bar, the first lower cross bar is hingedly connected to the first bottom support beam and a slip ring capable of linearly sliding relative to its outer bar of the right front pillar assembly In between, the second lower cross bar is hingedly connected between the second bottom support beam and the slip ring of the left front pillar assembly that can linearly slide relative to its outer bar. The rod connection structure design of the front folding assembly ensures that multiple 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 in its unfolded state.

In the context of the present application, feature A connected between feature B and feature C means that feature A is located between feature B and feature C and is connected with feature B and feature C simultaneously.

Optionally, the rear-end folding assembly includes:

The foldable upper connecting beam is composed of two left and right connecting beam sections hinged to each other, wherein the left connecting beam section is hingedly connected with an upper horizontal bar and a diagonal tie rod, and the upper horizontal bar is also connected with the left The top connecting piece of the rear pillar assembly is hingedly connected and the diagonal stay is also hingedly connected with the bottom connecting piece of the left rear pillar assembly, and the right connecting beam section is hingedly connected with an upper transverse The upper horizontal bar is also hingedly connected with the top connector of the right rear pillar assembly and the diagonal rod is also hingedly connected with the bottom connector of the right rear pillar assembly;

a base located below the upper connecting beam;

The first bottom support beam and the second bottom support beam, each of the first bottom support beam and the second bottom support beam has a joint connected to each other in a hinged manner between the upper connecting beam and the base. a first end; and an opposite second end, the second end of the first bottom support beam is hingedly connected to the bottom end connector of the right rear pillar assembly, and the second bottom support The second end of the beam is hingedly connected to the bottom end connector of the left rear pillar assembly;

A first bottom connecting beam and a second bottom connecting beam, the first bottom connecting beam is hingedly connected between the first bottom supporting beam and the base, and the second bottom connecting beam is hinged connected between the second bottom support beam and the base;

A first lower cross bar and a second lower cross bar, the first lower cross bar is hingedly connected to the slider of the first bottom support beam and the right rear pillar assembly that can linearly slide relative to its outer bar. Between the rings, the second lower cross bar is hingedly connected between the second bottom support beam and a slip ring of the left rear pillar assembly that is linearly slidable relative to its outer bar. Similar to the front folding assembly, the rod connection structure design of the rear folding assembly ensures that multiple symmetrically distributed triangular connection structures are formed between the two column assemblies. These triangular connection structures ensure the structural stability of the rear folded assembly in its unfolded state.

Optionally, the left folding assembly includes an intermediate telescopic rod assembly and a first cross rod assembly and a second cross rod assembly that are hingedly connected to opposite ends of the intermediate telescopic rod assembly at the same time,

The middle telescopic rod assembly includes an inner rod and an outer tube sleeved on the inner rod so as to be able to move linearly relative to it, and the lower end of the inner rod defines a joint with the first cross rod assembly and the second cross rod assembly. one end of the rod assembly hinged, the upper end of the outer tube defines the other end hinged to the first cross rod assembly and the second cross rod assembly,

The first cross bar assembly includes a first bar and a second bar crossing each other, and the first bar and the second bar are hinged to each other at the intersection, the first bar of the first cross bar assembly has A first end that is hingedly connected to the top connector of the left front pillar assembly and an opposite second end that is hingedly connected to the middle telescopic rod assembly, the second rod of the first cross rod assembly has a first end of the bottom end connector hingedly connected to the left front pillar assembly and an opposite second end hingedly connected to the middle telescoping rod assembly,

The second cross bar assembly includes a first bar and a second bar crossing each other, and the first bar and the second bar are hinged to each other at the intersection, the first bar of the second cross bar assembly has The first end of the top connecting member hingedly connected to the left rear pillar assembly and the opposite second end hingedly connected to the middle telescopic rod assembly, the second rod of the second cross rod assembly There is a first end hingedly connected to the bottom end connector of the left rear pillar assembly and an opposite second end hingedly connected to the middle telescoping rod assembly.

Optionally, the right side folding assembly includes an intermediate telescopic rod assembly and a first cross rod assembly and a second cross rod assembly that are hingedly connected to opposite ends of the intermediate telescopic rod assembly at the same time,

The middle telescopic rod assembly of the right side folding assembly includes an inner rod and an outer tube sleeved on the inner rod so as to move linearly relative to it, and the lower end of the inner rod is defined to be in contact with the second telescopic rod assembly of the right side folding assembly. One end of a cross bar assembly and the second cross bar assembly of the right side folding assembly is hinged, and the upper end of the outer tube is defined to be compatible with the first cross bar assembly of the right side folding assembly and the second cross bar assembly of the right side folding assembly. The other end of the hinged cross bar assembly,

The first cross bar assembly of the right side folding assembly includes a first bar and a second bar intersecting each other, and the first bar and the second bar are hinged to each other at the intersection, the first cross bar assembly The first rod has a first end hingedly connected to the top connector of the right front pillar assembly and an opposite second end hingedly connected to the middle telescopic rod assembly, the right side folding assembly the second rod of the first cross rod assembly has a first end hingedly connected to the bottom end connector of the right front pillar assembly and an opposite second end hingedly connected to the middle telescoping rod assembly,

The second cross bar assembly of the right side folding assembly includes a first bar and a second bar intersecting each other, and the first bar and the second bar are hinged to each other at the intersection, the second cross bar assembly A first rod has a first end hingedly connected to the top connector of the right rear pillar assembly and an opposite second end hingedly connected to the middle telescoping rod assembly, the right side folding assembly The second rod of the second cross rod assembly has a first end that is hingedly connected to the bottom end connector of the right rear pillar assembly and an opposite second end that is hingedly connected to the middle telescoping rod assembly. end.

Optionally, the chassis assembly includes:

The first chassis half assembly and the second chassis half assembly are hinged to each other, while the first chassis half assembly is connected to the left front pillar assembly, the bottom end connector of the right front pillar assembly and The base of the front folding assembly is hingedly connected, and the second chassis half assembly is connected to the left rear pillar assembly, the bottom end connector of the right rear pillar assembly and the rear folding assembly The bases are hingedly connected. This design of the chassis assembly increases load carrying capacity while enabling folding.

Optionally, said first chassis half assembly comprises a first bar, a second bar, a third bar and a fourth bar, said first bar and said second bar intersect each other and hinged to each other at intersections, said third and fourth bars intersect each other and hinged to each other at intersections;

The second chassis half assembly includes a first bar, a second bar, a third bar, and a fourth bar, the first bar and the second bar intersecting each other and at the point of intersection Hinged to each other, the third bar and the fourth bar cross each other and are hinged to each other at the point of intersection.

Optionally, the first rod of the first underframe half assembly has a first end hingedly connected to the bottom end connector of the left front pillar assembly, and the first underframe half assembly The second rod and the third rod each have a first end that is simultaneously hingedly connected to the base of the front folding assembly, and the fourth rod of the first chassis half assembly has a first end connected to the right front upright. the hingedly connected first ends of the bottom connectors of the assemblies;

The first rod of the second chassis half assembly has a first end hingedly connected to the bottom end connector of the left rear pillar assembly, the second rod of the second chassis half assembly Each member and the third rod have a first end that is hingedly connected to the base of the rear end folding assembly, and the fourth rod of the second chassis half assembly has a first end that is connected to the right rear pillar assembly. the first end connected in a hinged manner by the bottom end connector;

The first chassis half assembly and the second chassis half assembly are connected to each other via opposite second ends of their corresponding first, second, third and fourth rods hinged.

Optionally, the first ends of the first rod, the second rod, the third rod and the fourth rod of the first underframe half assembly are connected to the left front pillar assembly, the front folding assembly, the pivot axis defined between the right front pillar assembly; the first ends of the first, second, third and fourth rods of the second chassis half assembly and the left the pivot axis defined between the rear pillar assembly, the rear end fold assembly, the right rear pillar assembly; the pivot axis defined between the first chassis half assembly and the second chassis half assembly The axes are parallel to each other.

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 the A sliding sleeve that can slide linearly on the middle telescopic rod assembly of the left side folding assembly;

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 together hingedly connected to the right side fold A sliding sleeve that can slide linearly on the middle telescopic rod assembly (1121) of the assembly.

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 in the middle of the right folding assembly The outer tube of the telescopic rod assembly is sleeved.

Optionally, the frame of the foldable bicycle further includes an auxiliary support cross-bar assembly to provide support for the vehicle frame under the chassis assembly when the vehicle frame is in an unfolded state, and the auxiliary support cross-bar assembly includes A first rod and a second rod each having a first end hinged to each other, an opposite second end of the first rod being hingedly connected to the left The lower end of the inner rod of the middle telescopic rod assembly of the side 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 crossbar assembly further improves the load-bearing capacity of the chassis assembly, thereby ensuring that the folding bike can carry heavier items.

Optionally, each of the left rear pillar assembly and the right rear pillar assembly includes a push handle rod assembly fixed in parallel with its telescopic rod assembly, connected to the wheel assembly of the left rear pillar assembly and connected to the The wheel assemblies of the right rear pillar assembly have a common axis of rotation, and the common axis of rotation is located between the longitudinal central axis of the telescoping rod assembly of the left rear pillar assembly and the longitudinal central axis of the push handle rod assembly and between the Between the longitudinal central axis of the telescoping rod assembly of the rear pillar assembly and the longitudinal central axis of the push handle rod assembly. This special design can increase the possibility of resisting the impact of lateral force when the left rear pillar assembly and the right rear pillar assembly are impacted, that is to say, increase the structural robustness when subjected to lateral force impact.

Optionally, the frame of the folding bicycle further includes a push handle assembly that can be folded in the width direction of the frame, and the push handle assembly is respectively hingedly connected to the push handle assembly of the left rear column assembly. The bar assembly and the push bar assembly of the right rear column assembly.

Optionally, the frame of the folding bicycle further includes a pull rod assembly, and the pull rod assembly includes a first end connected to the base of the front folding assembly in a hinged manner and an opposite free first end for the user to hold. two ends.

Optionally, the pull rod assembly includes two outer rods fixed at a distance from each other and an inner double rod installed between the two outer rods and capable of sliding linearly relative to the outer rods,

A retainer is provided on the upper connecting beam of the front folding assembly to selectively engage and lock the inner double rods.

Optionally, the frame of the foldable bicycle further includes an auxiliary unfolding bracket that can be folded in the width direction of the vehicle frame, and the auxiliary unfolding bracket is installed on the left rear column assembly and the right rear column assembly respectively. The vicinity of the bottom end connector is hingedly connected to the push handle bar assembly of the left rear pillar assembly and the right rear pillar assembly.

By adopting the above-mentioned technical solution of the present application, it can be ensured that the foldable bicycle can be accommodated in the smallest occupied volume, and at the same time, the carrying capacity of the unfolded foldable bicycle can be enhanced, and the sturdiness and durability can be improved.

Description of drawings

The principles and various aspects of the application will be more fully understood from the following detailed description in conjunction with the following drawings. It should be pointed out that the proportions of the drawings may be different for the purpose of clarity, but this will not affect the understanding of the present application. In the attached picture:

Fig. 1 is 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;

Fig. 2 is a perspective view schematically showing a frame of a folding bicycle according to an embodiment of the present application, wherein the frame is in an unfolded state;

Fig. 3 is a perspective view schematically showing that the frame of the folding bicycle according to an embodiment of the application is in a storage state, that is, a fully folded state;

Fig. 4 is a perspective view schematically showing that the frame of the folding bicycle according to an embodiment of the present application is in an intermediate folded state between the unfolded state shown in Fig. 2 and the stowed state shown in Fig. 3 ;

Fig. 5 is a three-dimensional exploded view, schematically showing the main components of the frame;

Fig. 6 is a perspective view, schematically showing a column assembly of the vehicle frame, especially a front left column assembly;

Figure 7 is a perspective view schematically showing a side folding assembly of the vehicle frame;

Fig. 8 is a perspective view, schematically showing an end folding assembly of the vehicle frame, especially a front folding assembly;

Fig. 9 is a front view of the end folding assembly shown in Fig. 8 viewed from the front and rear directions;

Figure 10 is a perspective view schematically illustrating a chassis assembly of a vehicle frame;

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

Fig. 12 is an exploded perspective view schematically showing a retainer according to an embodiment of the present application, the retainer may be mounted on a front folding assembly, for example;

Figure 13 is a cross-sectional view schematically illustrating the cage of Figure 12;

Fig. 14 is a perspective view, schematically showing that the vehicle frame in the storage state is manually pulled and moved;

Figure 15A is a view schematically showing details of where the side folding assembly cooperates with the chassis assembly, with the frame in an intermediate folded state;

Fig. 15B is a view schematically showing details of where the side fold assembly mates with the chassis assembly, with the frame in an unfolded state.

Detailed ways

In the various figures of the application, structurally identical or functionally similar features are indicated by the same reference numerals.

Fig. 1 schematically shows a folding bicycle 100 according to an embodiment of the present application. The folding bicycle 100 includes a vehicle frame 110; four wheel assemblies 120FL, 120FR, 120RL, 120RR installed at the bottom of the vehicle frame 110; a cloth assembly 130 detachably connected to the vehicle frame 110; There are four awning support rod assemblies 140 detachably erected at the four corners of the frame 110 ; and the awning awning 150 detachably supported by the awning support rod assemblies 140 .

For reasons of clarity, a three-dimensional Cartesian coordinate system XYZ is shown in FIG. 1 , wherein the direction of the X-axis is parallel to the front-to-back direction of the folding bike 100 or the longitudinal direction of the vehicle frame 110, and the direction of the Y-axis is parallel to the direction of the folding bike 100. The width direction is parallel to or parallel to the width direction of the frame 110 , and the Z-axis direction is parallel to the height direction of the folding bike 100 or parallel to the height direction of the frame 110 . Furthermore, describing a feature moving in a direction means that the feature moves along or parallel to this direction. The definition of the three-dimensional rectangular coordinate system XYZ is also applicable to other drawings in this specification. In the context of this application, the term "front" or "rear" is only a relative concept of direction, and does not mean that the user must obey the direction of use when using his own folding bike; in fact, the term "front" or "After" can be interchanged with each other. The terms "left" or "right" are merely relative directional concepts. The term "upper" or "lower" or "top" or "bottom" refers to a relative orientation concept relative to the direction of gravity.

Further referring to FIG. 2 , this figure shows a vehicle frame 110 of a folding bicycle 100 according to an embodiment of the present application, wherein four wheel assemblies 120FL, 120FR, 120RL, and 120RR as shown in FIG. 1 are installed on the vehicle frame 110 And four canopy support rod assemblies 140 . The vehicle 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 chassis assembly 1140 connected at the bottom ends of the four upright assemblies 1110FL, 1110FR, 1110RL, 1110RR and matingly connected with the two side folding assemblies 1120L, 1120R.

In the context of the present application, reference numerals referring to the symbol "F" are meant to refer to components located in the "front", reference numerals referring to the symbol "R" are meant to refer to components located in the "rear" or "right" , Reference numerals referring to the symbol "L" are meant to refer to a part on the "left". For example, reference numeral 1110FL refers to a left front pillar assembly of the vehicle frame 110, reference numeral 1110FR refers to a right front pillar assembly of the vehicle frame 110, and so on.

5, four column assemblies 1110FL, 1110FR, 1110RL, 1110RR are generally upright with respect to the ground, while the front folding assembly 1130F is installed between the two column assemblies 1110FL, 1110FR, and the rear folding assembly 1130R is installed between the two column assemblies 1110FL and 1110FR. Between the column assemblies 1110RL, 1110RR, the left folding assembly 1120L is installed between the two column assemblies 1110FL, 1110RL, and the right folding assembly 1120R is installed between the two column assemblies 1110FR, 1110RR. The chassis assembly 1140 is connectable to the bottom ends of the four upright assemblies 1110FL, 1110FR, 1110RL, 1110RR simultaneously and forms a mating relationship with the two side fold assemblies 1120L, 1120R. The four wheel assemblies 120FL, 120FR, 120RL, 120RR are respectively mounted on the bottom ends of the corresponding upright assemblies 1110FL, 1110FR, 1110RL, 1110RR.

Each column assembly 1110FL, 1110FR, 1110RL, 1110RR is an assembly primarily composed of rods. In the context of the present application, a rod is to be understood as a solid rod or a hollow rod, such as a tube, as appropriate. In a preferred embodiment, the tubes mentioned herein may be thin-walled stainless steel tubes, aluminum tubes and other lightweight metal tubes. Take FIG. 6 as an example to illustrate a front pillar assembly of the present application, such as the left front pillar assembly 1110FL. It should be clear to those skilled in the art that another front pillar assembly, such as the right front pillar assembly 1110FR, is constructed with the left front pillar assembly 1110FL, but the two are mirror-symmetrical to each other with respect to the longitudinal center vertical plane of the vehicle frame 110 . Accordingly, any structural features described below with respect to left front pillar assembly 1110FL are equally applicable to right front pillar assembly 1110FR.

The left front pillar assembly 1110FL includes telescoping rod assemblies telescopically connected to each other along the length direction. For example, the telescopic rod assembly includes an inner rod 1112 and a hollow outer rod 1111 , and the inner rod 1112 is inserted into the hollow structure of the outer rod 1111 in a linear sliding manner. For example, a fastener may also be provided between the outer rod 1111 and the inner rod 1112 to selectively lock the longitudinal position between the two. For example, the fastener may be a threaded member passing through the outer rod 1111 that is perpendicular to the longitudinal direction of the telescoping rod assembly and that can be selectively rotated to move toward and contact the inner rod 1112 or away from the inner rod 1112 . In addition, in order to increase the firmness of the support and the reliability of sliding, a support rod 1117 is fixed parallel to 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 be able to slide linearly relative to the outer rod 1111. For example, the slip ring 1118 is sleeved on the outer surface of the outer rod 1111 so as to be axially slidable. In addition, the support rod 1117 passes through and is guided by the guide 1119 fixed at one end of the outer rod 1111, thereby ensuring the telescoping reliability and structural firmness of the telescoping rod assembly.

A top connecting piece 1113 is provided at the top end of the telescopic rod assembly, and a bottom connecting piece 1114 is provided at the bottom end of the telescopic rod assembly. The top end of the telescoping rod assembly is defined by the upper/top end of the inner rod 1112 and the bottom end of the telescoping rod assembly is defined by the lower/bottom end of the outer rod 11111. The top end connector 1113 and the bottom end connector 1114 may be fastened near respective ends of the telescoping rod assembly, for example, using screws. The top connecting piece 1113 and the bottom connecting piece 1114 are used to connect the corresponding parts of the front folding assembly 1130F in a hinged manner, so that on the premise that the longitudinal axis of the left front pillar assembly 1110FL is parallel to the Z-axis direction, the corresponding parts of the front folding assembly 1130F The retraction or deployment process can move the left front pillar assembly 1110FL in the Y-axis direction. The top end connecting piece 1113 and the bottom end connecting piece 1114 are also used to articulately connect the corresponding parts of the left side folding assembly 1120L, so that under the premise that the longitudinal axis of the left front pillar assembly 1110FL is parallel to the Z-axis direction, the left side folding assembly The corresponding retraction or deployment process of 1120L can move the left front pillar assembly 1110FL in the X-axis direction. The bottom end connector 1114 is located in the left front pillar assembly 1110FL adjacent to the bottom end of the wheel assembly 120FL where it is mounted. It can be seen that the slip ring 1118 is constrained to only be able to slide back and forth axially between the guide 1119 and the bottom connector 1114 .

Referring further to FIG. 5 , the left rear column assembly 1110RL includes a first telescopic rod assembly and a push handle rod assembly 1115 fixed parallel to the first telescopic rod assembly. The first telescoping rod assembly of the left rear pillar assembly 1110RL can be configured in a similar manner to the telescoping rod assembly of the left front pillar assembly 1110FL as described above. The push handle rod 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 telescoping rod assembly of the left rear pillar assembly 1110RL includes a top end connection 1113 and a bottom end connection 1114'. These top end connectors 1113 and bottom end connectors 1114' can connect the components of the left side folding assembly 1120L to the components of the rear end folding assembly 1130R in a similar manner as the top end connectors 1113 and bottom end connectors 1114 of the left front pillar assembly 1110FL, thereby On the premise that the longitudinal axis of the left rear column assembly 1110RL is parallel to the Z-axis direction, the corresponding contraction or unfolding process of the left side folding assembly 1120L can make the left rear column assembly 1110RL move in the X direction, and/or, the rear end folding assembly A corresponding retraction or deployment process of 1130R enables movement of left rear pillar assembly 1110RL in the Y direction.

At the same time, the bottom end connector 1114 of the left front pillar assembly 1110FL and the bottom end connector 1114' of the left rear pillar assembly 1110RL can also be hingedly connected to the components of the chassis assembly 1140 as described below so that the chassis The retraction or deployment of the assembly 1140, the left front pillar assembly 1110FL and the left rear pillar assembly 1110RL can move in the X and Y directions simultaneously.

The push handle rod assembly 1115 of the left rear pillar assembly 1110RL can be fixed in parallel with the first telescoping rod assembly of the left rear pillar assembly 1110RL via the bottom end connector 1114'. In addition, between the top connecting piece 1113 and the bottom connecting piece 1114' of the first telescopic rod assembly of the left rear pillar assembly 1110RL, a connecting piece 1116 is simultaneously fastened to the first telescopic rod assembly and the push rod assembly of the left rear pillar assembly 1110RL. Put the rod assembly 1115 on to further ensure the parallel fixation of the two. For example, the connecting member 1116 can be fastened to the first telescoping rod assembly and the push handle rod assembly 1115 of the left rear pillar assembly 1110RL by using suitable fastening members such as screws. The top end of push bar assembly 1115 may be connected to components of push handle assembly 1160, for example.

This dual parallel rod design of the left rear pillar assembly 1110RL and the right rear pillar assembly 1110RR allows the common axis of rotation of the two wheel assemblies 120RL, 120RR (parallel to Y-axis direction) is located between the first telescopic rod assembly and the push handle rod assembly 1115 as viewed in the XZ plane. That is, the common axis of rotation of the wheel assemblies 120RL, 120RR is between the longitudinal central axis of the first telescoping rod assembly of the left rear pillar assembly 1110RL and the right rear pillar assembly 1110RR and the longitudinal central axis of the push handle rod assembly 1115 . The wheel assemblies 120RL, 120RR are designed to only be able to rotate around a rotation axis parallel to the Y-axis direction, so the rotation axis is located between the longitudinal central axis of the first telescopic rod assembly and the longitudinal central axis of the push handle rod assembly 1115 in the XZ plane The design between them can increase the possibility of resisting the impact of the lateral force parallel to the Y-axis direction when the left rear pillar assembly 1110RL and the right rear pillar assembly 1110RR are impacted, that is to say, increase the structural robustness when being impacted by the lateral force.

As shown in FIG. 2 , the push handle assembly 1160 includes a left connecting joint 1161L, a right connecting joint 1161R, two middle connecting joints 1162L, 1162R and a plurality of connecting rods respectively connected between these joints, wherein the two middle connecting joints The links between 1162L, 1162R can be hinged to each other. In the context of the present application, the term "joint" means that two parts to which the joint is connected can rotate relative to each other due to the fact that the joint can rotate about an axis of rotation defined by the joint. Accordingly, the left connecting joint 1161L and the right connecting joint 1161R of the push handle assembly 1160 can be respectively connected to the top ends of the push handle bar assemblies 1115 of the left rear pillar assembly 1110RL and the right rear pillar assembly 1110RR, such as via suitable fasteners such as screws. fasten. When connected in place, the axes of rotation of left and right connecting joints 1161L, 1161R are collinear and parallel to the common axis of rotation of wheel assemblies 120RL, 120RR. Therefore, as the right front pillar assembly 1110FR and the right rear pillar assembly 1110RR move closer to each other in the Y-axis direction, the push handle assembly 1160 can correspondingly pass through the links of the push handle assembly 1160 from the unfolded state shown in FIG. 2 . Folded against each other to shrink to the state shown in FIG. 4 and further to the state shown in FIG. 3 . It should be clear to those skilled in the art that the rotational positions of these connecting joints can be relatively fixed, that is to say, after the push handle assembly 1160 is installed in place, it can be rotated to a suitable position relative to the column assembly and being locked. Then, as desired, can be unlocked and free spins again.

The configurations of the left front pillar assembly 1110FL and the left rear pillar assembly 1110RL and the right front pillar assembly 1110FR and the right rear pillar assembly 1110RR are mirror-symmetrical with respect to the longitudinal central vertical plane of the vehicle frame 110 . Therefore, when the column assemblies are respectively connected to the side folding assemblies, the end folding assemblies, and the chassis assembly, the shrinking and unfolding process of the side folding assemblies, the end folding assemblies, and the chassis assembly can make these column assemblies move in the X and Y directions. move at the same time.

It should be pointed out that, as can be seen from FIGS. The position on the Z axis is not fixed when moving in the X and Y directions. That is, the longitudinal position of each bottom connector 1114, 1114' on the corresponding upright assembly remains constant as the upright assemblies are moved. Such a design can ensure that the vehicle frame 110 is not easily deformed due to the relative movement of the lower connecting parts in the unfolded state, and improves the sturdiness and durability of the vehicle frame 110 in the unfolded state.

Turning to FIG. 7 , one of two side folder assemblies, such as left folder assembly 1120L, is schematically shown. It should be clear that the two side folding assemblies are mirror-symmetrical with respect to the longitudinal central vertical plane of the vehicle frame 110 . Accordingly, what is described below with reference to the left side folder assembly 1120L may correspondingly apply to the right side side folder assembly 1120R.

The left folding assembly 1120L includes a middle telescopic rod assembly 1121 and two cross rod assemblies 1122 and 1123 which are hingedly connected to opposite ends of the middle telescopic rod assembly 1121 at the same time. For example, cross bar assembly 1122 may be referred to as first cross bar assembly 1122 and cross bar assembly 1123 may be referred to as second cross bar assembly 1122 . The middle telescopic rod assembly 1121 includes, for example, an inner rod 1121b and an outer tube 1121a sleeved on the inner rod 1121b so as to move linearly relative to it. Viewed in the Z-axis direction, the top end of the outer tube 1121a is always above the bottom end of the inner rod 1121b. The cross bar assembly 1122 includes a first bar 1122a and a second bar 1122b. The first rod 1122a and the second rod 1122b cross each other and are hingedly connected to each other at the intersection point. In the context of this application, the use of the term "hingedly connected" to describe the state of connection of two parts means that the two parts are connected with a pivot axis and about which the two parts can be connected to each other. relative pivot. For example, as an example, such "hingedly connected" can be realized by passing a pivot shaft forming a pivot axis between two parts to be connected. Similarly, the cross bar assembly 1123 includes a first bar 1123a and a second bar 1123b. The first rod 1123a and the second rod 1123b cross each other and are hingedly connected to each other at the intersection point.

Each of the first rods 1122a and 1123a has two ends opposite to each other in the axial direction, and each of the second rods 1122b and 1123b also has two ends opposite to each other in the axial direction. Thus, as shown, the ends of the first rods 1122a and 1123a are hingedly connected to the bottom end of the inner rod 1121b of the middle telescopic rod assembly 1121, while the ends of the second rods 1122b and 1123b are connected to the middle telescopic rod assembly 1121 in a hinged manner. The top ends of the outer tubes 1121a of the rod assembly 1121 are hinged together, so that when the left folding assembly 1120L is assembled 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 the vehicle frame 110 , the hinge axis at the intersection of the two rods of the cross bar assembly 1123 is also parallel to the Y-axis direction. In addition, the two free ends of the cross bar assembly 1122 and the two free ends of the cross bar assembly 1123 of the left side folding assembly 1120R shown in FIG. The end connector 1114 and the top end connector 1113 and the bottom end connector 1114' of the left rear pillar assembly 1110RL are hingedly connected. In this way, when the left folding assembly 1120L is assembled in the vehicle frame 110 , these hinge axes are all parallel to the Y-axis direction.

This configuration of the left fold assembly 1120L ensures that when connected in place, the first and second bars of the cross bar assemblies 1122 and 1123 will The rods can pivot about their respective hinge axes, so that the length of the middle telescopic rod assembly 1121 is increased, and finally the space occupied by the left side folding assembly 1120L in the X-axis direction is minimized.

A sliding sleeve 1124 capable of axially sliding back and forth is sheathed on the middle telescopic rod assembly 1121 of the left folding assembly 1120L, especially on its outer tube 1121 . The sliding sleeve 1124 is used to connect corresponding components of the chassis assembly 1140 . In addition, a connecting seat 1125 is fixed at the bottom end of the inner rod 1121b of the middle telescopic rod assembly 1121 . The connecting base 1125 is used for connecting corresponding parts of the chassis assembly 1140 or parts matched with the chassis assembly 1140 .

Referring now to FIGS. 8 and 9, a front folder assembly 1130F according to the present application will be described. It should be clear to those skilled in the art that in terms of main construction, the front folding assembly 1130F is substantially the same as the rear folding assembly 1130R. Therefore, the following description about the front folding assembly 1130F is also applicable to the rear folding assembly 1130R. Front fold assembly 1130F has been shown coupled to left front pillar assembly 1110FL and right front pillar assembly 1110FR in FIG. 8 . The front 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, 1131b, which are hinged at the ends where they meet each other, so that the upper connecting beam 1131 can be hinged around. The axis is folded, ie the two connecting beam sections 1131a, 1131b can pivot relative to each other about the hinge axis. At the same time, an upper cross bar and a diagonal stay are each hinged at different points at the free ends of the two connecting beam sections 1131a, 1131b. As shown in Figure 8, an upper horizontal bar 1132a and a diagonal stay rod 1133a are hinged at different positions at the free end of the connecting beam section 1131a, and an upper horizontal bar is hinged at different positions at the free end of the connecting beam section 1131b. Bar 1132b and a diagonal stay 1133b. Viewed in the ZY plane, these upper cross bars, diagonal stay bars and connecting beam sections are mirror-symmetrically distributed. Ends of the upper horizontal bar 1132a and the diagonal stay rod 1133a opposite to the hinged end of the connecting beam 1131 are hingedly connected to the top connector 1113 and the bottom connector 1114 of the right front pillar assembly 1110FR, respectively. Similarly, the ends of the upper bar 1132b and the diagonal stay rod 1133b opposite to the hinged end of the connecting beam 1131 are hingedly connected to the top connector 1113 and the bottom connector 1114 of the left front pillar assembly 1110FL, respectively. The length of each upper horizontal bar 1132a or 1132b is significantly shorter than the length of the corresponding diagonal stay rod 1133a or 1133b. In addition, each connecting beam section 1131a and 1131b is substantially arc-shaped, so that the upper connecting beam 1131 of the front folding assembly 1130F in the unfolded state is also arc-shaped.

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, that is, a first bottom support beam 1135a and a second bottom support beam 1135b. One end of each bottom support beam 1135a and 1135b is hingedly connected to the bottom end connector 1114 of the right front pillar assembly 1110FR and the bottom end connector 1114 of the left front pillar assembly 1110FL, respectively. In addition, the two bottom support beams 1135a and 1135b are also hinged to each other, and the hinge axis is located between the upper connecting beam 1131 and the base 1134 in the Z-axis direction. Meanwhile, two lower cross bars 1136a and 1136b are respectively connected between the two bottom support beams 1135a and 1135b and the slip 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 hingedly connected to the bottom support beam 1135a, and the opposite end is hingedly connected to the slip ring 1118 of the right front pillar assembly 1110FR; one end of the lower cross bar 1136b One end is hingedly connected to the bottom support beam 1135b, and the opposite end is hingedly connected to the slip ring 1118 of the left front pillar assembly 1110FL. Meanwhile, two bottom connecting beams 1137a and 1137b are respectively connected between the base 1134 and the two bottom supporting beams 1135a and 1135b. For example, one end of the bottom connecting beam 1137a is hingedly connected to the base 1134, and the opposite end is hingedly connected to the bottom supporting beam 1135a; one end of the bottom connecting beam 1137b is hingedly connected to the base 1134, and the opposite end is hingedly connected to the bottom support beam 1135b. It should be clear that on the same bottom support beam, the hinge positions of the corresponding lower cross bar and the corresponding bottom connecting beam 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 cross bar 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, viewed in the ZY plane, the upper crossbars, diagonal stays and connecting beam sections, the bottom supporting beams, the lower crossbars, the bottom connecting beams and the base of the front folding assembly 1130F are mirror-symmetrically distributed.

Turning to FIG. 9 , the design of the bar connection structure 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 in its unfolded state. In particular, the Z-axis position of the lower ends of the two diagonal stay rods 1133a, 1133b connected to the two column assemblies 1110FL and 1110FR of the front-end folding assembly 1130F is always Remaining unchanged, this ensures enhanced structural robustness of the front folder assembly 1130F.

Referring further to FIG. 2 , for the front folding assembly 1130F, a pull rod assembly 1170 is connected to its base 1134 . For example, the lower end of the pull rod assembly 1170 is pivotally connected to the base 1134 of the front folding assembly 1130F, so that the pull rod assembly 1170 can pivot around a pivot axis parallel to the Y axis. The opposite free end of the pull rod assembly 1170 is designed to be grasped by the user's hand so as to be able to pull the folding bicycle 100 . In addition, on the upper connecting beam 1131 of the front folding assembly 1130F, especially on one of its left and right connecting beam sections 1131a, 1131b, a cage 1180 capable of holding the tie rod assembly 1170 is provided, so that the tie rod assembly 1170 can be selected It is permanently engaged with the cage to remain fixed relative to the frame 110.

FIG. 11 schematically illustrates a tie rod assembly 1170 according to one embodiment of the present application. The pull rod assembly 1170 includes two outer rods 1172 spaced apart from each other and an inner double rod 1171 installed between the two outer rods 1172 and capable of linearly sliding relative to the outer rods 1172. The inner double rod 1171 consists of two Two parallel and closely fixed rods are formed. The two ends of the two outer rods 1172 are fixed with supporting frames, wherein the lower supporting members form the lower ends for fixing with the front folding assembly 1130F, that is, the hinged seat 1173 . In addition, a guide frame 1174 is fixed on the end of the inner double rod 1171 protruding into the two outer rods 1172 , and the opposite end forms a handle for the pull rod assembly 1170 to be held by the user's hand. The inner double rod 1171 passes through and is guided by the support brackets at the upper ends of the two outer rods 1172 . This design of the tie rod assembly 1170 can ensure that the installation requirements of the length of the tie rod assembly 1170 are changed, and at the same time, the strength of bearing force is improved. In addition, the guide frame 1174 is provided with a locking structure, which can be selectively locked together with the hinge seat 1173 when approaching or touching the hinge seat 1173 . When the tie rod assembly 1170 is in its shortest length state, the inner double rod 1171 is at least partially capable of extending lengthwise from between the two outer rods 1172 .

FIG. 12 shows an exploded perspective view of cage 1180 . The holder 1180 includes a clamping seat 1181, which is used to fasten the upper connecting beam 1131 of the front-end folding assembly 1130F, especially one of the two left and right connecting beam sections 1131a, 1131b, via a fastening such as a screw. Firmware fixed. A cavity 1182 is formed in the card seat 1181 for accommodating coil springs 1183a, 1183b, clips 1184a, 1184b as described below. The clips 1184a, 1184b are pivotally mounted in the cavity 1182 with their pivot axes spaced apart from each other. In addition, two coil springs 1183a, 1183b are respectively arranged in the cavity 1182 to exert a force between the socket 1181 and the clips 1184a, 1184b tending to pivot the clips 1184a, 1184b. After the clamping seat 1181 is installed and the vehicle frame 110 is in the unfolded state, the pivot axes of the clips 1184a, 1184b are parallel or substantially parallel to the Z-axis direction. Each clip 1184a, 1184b is formed with a plurality of teeth about the respective pivot axis so that the teeth can engage each other between the two pivot axes. In addition, each clip 1184a, 1184b is formed with a protrusion 11841a, 11841b opposite to the respective teeth, so that these protrusions can be blocked by the edges around the cavity 1182 accordingly, preventing 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 part-cylindrical inner surfaces can increase or decrease. When the inner double rod 1171 needs to be installed, the two clips 1184a, 1184b can pivot outward around their respective pivot axes, so that the vertical distance between the central axes of their part-cylindrical inner surfaces reaches the maximum, thereby facilitating The inner double rod 1171 is inserted between the two clips 1184a, 1184b. The two clips 1184a, 1184b can then pivot inwardly about their respective pivot axes while their part-cylindrical inner surfaces are in contact with the corresponding rods of the inner double rod 1171 and their part-cylindrical inner surfaces The vertical distance between the central axes of the surfaces is at a minimum. At this time, the vertical distance between the central axes of their part-cylindrical inner surfaces is slightly smaller than the vertical distance between the central axes of the two rods of the inner double rod member 1171, so that when the corresponding teeth are kept meshed, the The inner dual rod 1171 is held in place relative to the cage 1180 . When needed, the two clips 1184a, 1184b are pivoted outward again around their respective pivot axes so that the vertical distance between the central axes of their part-cylindrical inner surfaces can be maximized, so that the inner double rods can be moved smoothly. Piece 1171 is removed.

The installation position of the holder 1180 on the front folding assembly 1130F is such that it can be exposed when the frame 110 is in the storage state, so the pull rod assembly 1170 can be fixed to the holder 1180 via its inner double rod 1171, so that the user can pull it by hand. The frame 110 in the stored state is convenient for moving the folding bike 100 . At this time, the wheel assemblies 120RL, 120RR are used as wheel assemblies in contact with the ground, while the wheel assemblies 120FL, 120FR are not in contact with the ground. Therefore, the flexibility of movement of the folding bicycle 100 in the stored state is improved.

An example of the chassis assembly 1140 according to the present application will be described below with reference to FIG. 10 . As shown, the chassis assembly 1140 includes a first chassis half assembly 1140a and a second chassis half assembly 1140b that are hinged to each other, while the first chassis half assembly 1140a is connected to the upright assemblies 1110FL, 1110FR and front end Fold assembly 1130F is hinged, and second chassis half assembly 1140b is hinged with uprights assemblies 1110RL, 1110RR and rear fold assembly 1130R; in addition, chassis assembly 1140 is also in mating relationship with side fold assemblies 1120L, 1120R. The first chassis half assembly 1140a and the second chassis half assembly 1140b are hinged to form a pivot axis 11400 so that the first chassis half assembly 1140a and the second chassis half assembly 1140b can pivot about The axes of rotation 1140O pivot relative to each other. In addition, first chassis half assembly 1140a is hinged to column assemblies 1110FL, 1110FR and front fold assembly 1130F in a manner that forms pivot axis 1140Oa such that first chassis half assembly 1140a is relative to column assemblies 1110FL, 1110FR and Front fold assembly 1130F is pivotable about pivot axis 1140Oa. Additionally, the second chassis half assembly 1140b is hinged to the upright assemblies 1110RL, 1110RR and the rear end fold assembly 1130R in a manner that forms a pivot axis 1140Ob such that the second chassis half assembly 1140b is relative to the upright assemblies 1110RL, 1110RR. And rear end folding assembly 1130R can pivot about pivot axis 1140Ob. These pivot axes 1140O, 1140Oa, 1140Ob are parallel to each other and generally parallel to the XY plane when the frame 110 is in the unfolded state.

The first chassis half assembly 1140a includes a first bar 1141a, a second bar 1142a, a third bar 1143a, and a fourth bar 1144a, wherein the first bar 1141a and the second bar 1142a intersect each other and at The intersections are hinged to each other, and the third rod 1143a and the fourth rod 1144a cross each other and are hinged to each other at the intersections. The first end portion of the first rod 1141a is configured to be hingedly connected to the bottom end connecting member 1114 of the left front pillar assembly 1110FL. For example, a first connecting piece 1145 for forming a hinged connection is mounted at the first end of the first rod 1141a. The first link 1145 is pivotally connected to the bottom link 1114 of the left front pillar assembly 1110FL. At the same time, the first end of the first rod 1141a itself can pivot independently relative to the first connecting member 1145 .

The first end of the second rod 1142a and the first end of the third rod 1143a are pivotally connected to the second connecting member 1146 at the same time, so that the second rod 1142a and the third rod The connecting parts of the piece 1143 a and the second connecting piece 1146 are staggered from each other, and the second rod 1142 a and the third rod 1143 a can pivot relative to the second connecting piece 1146 . At the same time, the second connecting member 1145 is also pivotally connected to the base 1134 of the front folding assembly 1130F. The first end of the fourth lever 1144a is pivotably connected to the third link 1147, and at the same time the first end of the fourth link 1144a is pivotally connected by means of the third link 1147. To the bottom end connector 1114 of the right front pillar assembly 1110FR. That is, the first link 1145, the second link 1146, and the third link 1147 together define a pivotable opening about which the first chassis half assembly 1140a is pivotable relative to the uprights 1110FL, 1110FR and the front fold assembly 1130F. Pivot axis 1140Oa.

Similarly, first connecting parts 1145, 1145, The second link 1146, the third link 1147, and are pivotally connected to the column assembly 1110RL, the rear end fold assembly 1130R, and the column assembly 1110RR, respectively, in a similar manner to the first chassis half assembly 1140a, so that these first A link 1145, a second link 1146, and a third link 1147 together define a pivot axis 1140Ob about which the second chassis half assembly 1140b can pivot relative to the uprights assemblies 1110RL, 1110RR and rear end fold assembly 1130R. .

In addition, it should be clear to those skilled in the art that since these connecting elements are respectively connected to the corresponding column assembly and the end folding assembly, they can move relatively close to each other or away from each other as the corresponding assembly shrinks or unfolds.

For the first chassis half assembly 1140a, the opposite second end of the first rod 1141a and the opposite second end of the fourth rod 1144a are simultaneously hingedly connected to the middle folding connector 11410 . The opposite second end of the second rod 1142 a is hingedly connected to the fourth connecting member 1148 , and the opposite second end of the third rod 1143 a is hingedly connected to the fifth connecting member 1149 . Similarly, opposite second ends of the first bar 1141b and the fourth bar 1144b of the second chassis half assembly 1140b are simultaneously hingeably connected to the middle folding link 11410, and the second bar 1142b The opposite second end of the third rod 1143b is hingedly connected to the fourth connecting piece 1148, and the opposite second end of the third rod 1143b is hingedly connected to the fifth connecting piece 1149. The fourth link 1148, the middle fold link 11410 and the fifth link 1149 of the first chassis half assembly 1140a and the second chassis half assembly 1140b are respectively hinged to each other so as to together define the first chassis half assembly 1140a and second chassis half assembly 1140b may pivot relative to each other about pivot axis 11400. It should be clear to those skilled in the art that the above-mentioned connecting pieces 1145 , 1146 , 1147 , 1148 , 1149 and 11410 are connected to the pivoting axes of the respective connecting pieces relative to the corresponding connecting piece and these connecting pieces are relative to other corresponding connecting pieces. The axes about which the components pivot are non-coplanar, ie the pivotal movements are independent of each other.

The fourth connecting piece 1148 and the fifth connecting piece 1149 , which are opposite to each other and hinged together, of the bottom frame assembly 1140 are also mated with the corresponding sliding sleeves 1124 of the side folding assemblies 1120L, 1120R. Taking the side folding assembly 1120R as an example and referring to FIGS. 15A and 15B , the following describes how the fourth connecting piece 1148 and the fifth connecting piece 1149 of the bottom frame assembly 1140 cooperate with the sliding sleeve 1124 . It should be clear to those skilled in the art that the same applies to side folder assembly 1120L. The hinge axes of the fourth connecting piece 1148 and the fifth connecting piece 1149 are fixed relative to the sliding sleeve 1124 slidably provided on the middle telescopic rod assembly 1121 , especially on the outer tube 1121 thereof. Therefore, the hinge axis of the fourth link 1148 and the fifth link 1149 can move along with the sliding sleeve 1124, that is, the hinge axis is limited to be able to extend and retract only along the middle of the side folding assembly 1120R. The rod assembly 1121 moves axially and linearly.

In addition, as shown in FIG. 15B , an auxiliary support cross bar assembly 1150 is disposed between the two folding assemblies 1120L, 1120R. Further referring to FIG. 5 , the auxiliary support cross bar assembly 1150 includes a first bar 1150a and a second bar 1150b having equal lengths to each other. The two first and second rods 1150a, 1150b are hinged to each other at first ends close to each other via corresponding connectors. In addition, the opposite second ends of the first rod 1150a and the second rod 1150b of the auxiliary support crossbar assembly 1150 are hinged to the connecting seats 1125 of the folding assemblies 1120L, 1120R. The auxiliary support cross bar assembly 1150 is configured such that the auxiliary support cross bar assembly 1150 is located below the chassis assembly 1140 when the vehicle frame 110 is in the unfolded state. Therefore, when the vehicle frame 110 is in the unfolded state, the bottom frame assembly 1140 can be supported on the auxiliary support crossbar assembly 1150 , particularly its corresponding connecting member, via its middle folding connecting member 11410 . In addition, when the vehicle frame 110 is in the unfolded state, since the inner rods 1121b of the side folding assemblies 1120L, 1120R are retracted into the outer tube 1121a in such a manner that only the connecting seats 1125 are exposed, the bottom frame assemblies 1140 are hinged to each other via the fourth connection. Member 1148 and fifth connecting member 1149 may also be supported on auxiliary support rail assembly 1150 . Such a design can ensure that the bottom frame assembly 1140 can bear greater weight, and improve the overall bearing capacity of the vehicle frame 110 .

As shown in FIG. 2 , the vehicle frame 110 further includes an auxiliary deployment bracket 1190 . The auxiliary deployment bracket 1190 can be constructed in a manner similar to the push handle assembly 1160, that is to say, the auxiliary deployment bracket 1190 can be composed of a plurality of rods hinged to each other, so that the projected length of the auxiliary deployment bracket 1190 in the XY plane can be determined according to Need to shorten or lengthen. In addition, the two ends of the auxiliary deployment bracket 1190 can be hingedly connected to the push rod assembly 1115 of the column assembly 1110RL, 1110RR respectively. Therefore, when the vehicle frame 110 is in the unfolded state, the auxiliary deployment bracket 1190 can pivot relative to the post assemblies 1110RL, 1110RR, so that when the occupant is positioned in the vehicle frame 110, the auxiliary deployment bracket 1190 can be pivoted to a substantially horizontal position as desired. The position is convenient for the leg support of the occupant, which improves the comfort of the occupant. It should be clear that, in an alternative embodiment, the upper connecting beam 1131 of the front folding assembly 1130F may also be provided with a locking structure for cooperating with the safety belt worn by the occupant of the folding bicycle, for example, for receiving a safety belt. Locking button with buckle.

The fabric component 130 may be composed of multiple pieces of tarpaulin, for example, a hook and loop is provided at a required position to facilitate connection with the rods of the corresponding component. For example, after the vehicle frame 110 is assembled in place, the fabric component 130 can be connected to the above-mentioned components to form the folding bicycle 100 as shown in FIG. 1 . When it needs to be folded and stored, the vehicle frame 110 of the present application can pass through the state shown in FIG. 4 from the unfolded state shown in FIG. It shrinks in different directions accordingly and the components move relatively close to each other in different directions, so as to ensure that the volume occupied by the vehicle frame 110 in the storage state can be minimized. In addition, in the unfolded state, due to the special design of each component constituting the vehicle frame 110 , it can ensure that the vehicle frame as a whole is stronger and more durable.

While specific embodiments of the application are described in detail herein, they are presented for purposes of illustration only and should not be considered limiting of the scope of the 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 alternatives, changes and modifications can be devised without departing from the spirit and scope of the application.

Claims (17)

1. A folding bicycle (100), the folding bicycle (100) has a vehicle frame (110), and the vehicle frame (110) comprises:

   Left front pillar assembly (1110FL), right front pillar assembly (1110FR), left rear pillar assembly (1110RL), right rear pillar assembly (1110RR), each of which is provided with a top connector whose axial distance can be changed ( 1113) and bottom connector (1114 or 1114');

   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 in the width direction of the vehicle frame (110) A foldable front-end folding assembly (1130F);

   connected to the top connector (1113) and the bottom connector (1114') of the left rear pillar assembly (1110RL) and the right rear pillar assembly (1110RR), respectively, and on the vehicle frame (110) The rear end folding assembly (1130R) capable of folding in the width direction of the

   The top connector (1113) and the bottom connector (1114 or 1114') of the left front pillar assembly (1110FL) and the left rear pillar assembly (1110RL) are respectively connected, and on the vehicle frame (110 ) The left side folding assembly (1120L) that can be folded in the length direction of );

   connected to the top connecting piece (1113) and the bottom connecting piece (1114 or 1114') of the right front column assembly (1110FR) and the right rear column assembly (1110RR), respectively, and on the vehicle frame (110) The right folding assembly (1120R) that can be folded in the length direction of the

   Bottom connecting piece (1114 or 1114) with the left front pillar assembly (1110FL), the right front pillar assembly (1110FR), the left rear pillar assembly (1110RL), the right rear pillar assembly (1110RR) '), the front folding assembly (1130F) and the rear folding assembly (1130R) are respectively connected and cooperate with the left folding assembly (1120L) and the right folding assembly (1120R), and can a chassis assembly (1140) that is folded simultaneously in the width direction and the length direction of the vehicle frame (110);

   Each of the left front pillar assembly (1110FL), the right front pillar assembly (1110FR), the left rear pillar assembly (1110RL), the right rear pillar assembly (1110RR) includes a telescopic rod assembly, the telescopic rod The assembly includes an inner rod (1112) and a hollow outer rod (1111), the inner rod (1112) is set in the outer rod (1111) in a manner that can slide along the axial direction, and the corresponding top connecting piece ( 1113) is fixed to the upper end of the inner pole (1112), and the corresponding bottom end connector (1114 or 1114') is fixed to the lower end of the outer pole (1111), and is folded when the folding cart (100) During the storage process, the axial length position of each bottom connecting piece (1114 or 1114') relative to the corresponding column assembly remains unchanged.
2. The folding bicycle (100) according to claim 1, characterized in that, the front-end folding assembly (1130F) comprises:

   A foldable upper connecting beam (1131), which 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 with an upper horizontal bar (1132b) and a diagonal tie rod (1133b), the upper horizontal bar (1132b) is also hingedly connected to the top connector (1113) of the left front pillar assembly (1110FL) and the diagonal tie rod (1133b) is also connected to the left front pillar The bottom connecting piece (1114) of the assembly (1110FL) is connected in a hinged manner, and the right connecting beam section (1131a) is connected in a hinged manner with an upper horizontal bar (1132a) and a diagonal tie rod (1133a). The horizontal bar (1132a) is also hingedly connected with the top connector (1113) of the right front pillar assembly (1110FR) and the diagonal stay rod (1133a) is also connected with the bottom connector (1110FR) of the right front pillar assembly (1110FR). 1114) hingedly connected;

   a base (1134) located below the upper connecting beam (1131);

   The first bottom support beam (1135a) and the second bottom support beam (1135b), the first bottom support beam (1135a) and the second bottom support beam (1135b) each have a connection beam (1131 ) and the base (1134) are hingedly connected together with the first end; and the opposite second end, the second end of the first bottom support beam (1135a) is hinged connected to the bottom end connector (1114) of the right front pillar assembly (1110FR), and the second end of the second bottom support beam (1135b) is hingedly connected to the bottom end of the left front pillar assembly (1110FL) Bottom connector (1114);

   The first bottom connecting beam (1137a) and the second bottom connecting beam (1137b), the first bottom connecting beam (1137a) is hingedly connected to the first bottom supporting beam (1135a) and the base (1134 ), the second bottom connecting beam (1137b) is hingedly connected between the second bottom supporting beam (1135b) and the base (1134);

   A first lower crossbar (1136a) and a second lower crossbar (1136b), the first lower crossbar (1136a) is hingedly connected to the first bottom support beam (1135a) and the right front pillar assembly (1110FR) between slip rings (1118) that can slide linearly relative to its outer rods (1111), the second lower cross bar (1136b) is hingedly connected to the second bottom support beam (1135b) Between the slip ring (1118) that can linearly slide relative to the outer rod (1111) of the left front pillar assembly (1110FL).
3. The folding bicycle (100) according to claim 1 or 2, characterized in that, the rear-end folding assembly (1130R) comprises:

   A foldable upper connecting beam (1131), which 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 with an upper horizontal bar (1132b) and a diagonal stay rod (1133b), the upper horizontal bar (1132b) is also hingedly connected with the top connector (1113) of the left rear pillar assembly (1110RL) and the diagonal stay rod (1133b) is also connected with the left The bottom end connector (1114') of the rear pillar assembly (1110RL) is hingedly connected, and the right connecting beam section (1131a) is hingedly connected with an upper horizontal bar (1132a) and a diagonal tie rod (1133a) , the upper horizontal bar (1132a) is also hingedly connected with the top connector (1113) of the right rear pillar assembly (1110RR) and the diagonal stay rod (1133a) is also connected with the right rear pillar assembly (1110RR) the bottom connector (1114') is hingedly connected;

   a base (1134) located below the upper connecting beam (1131);

   The first bottom support beam (1135a) and the second bottom support beam (1135b), the first bottom support beam (1135a) and the second bottom support beam (1135b) each have a connection beam (1131 ) and the base (1134) are hingedly connected together with the first end; and the opposite second end, the second end of the first bottom support beam (1135a) is hinged Connected to the bottom end connector (1114') of the right rear pillar assembly (1110RR), and the second end of the second bottom support beam (1135b) is hingedly connected to the left rear pillar assembly ( 1110RL) bottom connector (1114');

   The first bottom connecting beam (1137a) and the second bottom connecting beam (1137b), the first bottom connecting beam (1137a) is hingedly connected to the first bottom supporting beam (1135a) and the base (1134 ), the second bottom connecting beam (1137b) is hingedly connected between the second bottom supporting beam (1135b) and the base (1134);

   The first lower crossbar (1136a) and the second lower crossbar (1136b), the first lower crossbar (1136a) is hingedly connected to the first bottom support beam (1135a) and the right rear pillar Between the slip rings (1118) of the assembly (1110RR) that can slide linearly relative to its outer rods (1111), the second lower cross bar (1136b) is hingedly connected to the second bottom support beam (1135b ) and the slip ring (1118) that can linearly slide relative to its outer rod (1111) of the left rear pillar assembly (1110RL).
4. The folding bicycle (100) according to claim 3, characterized in that, the left side folding assembly (1120L) comprises a middle telescopic rod assembly (1121) and two opposite ends of the middle telescopic rod assembly (1121) a first cross bar assembly (1122) and a second cross bar assembly (1123) hingedly connected,

   The middle telescopic rod assembly (1121) includes an inner rod (1121b) and an outer tube (1121a) sheathed on the inner rod (1121b) so as to move linearly relative thereto, and the lower end of the inner rod (1121b) Define one end hinged with the first cross bar assembly (1122) and the second cross bar assembly (1123), the upper end of the outer tube (1121a) defines the connection with the first cross bar assembly (1122) and the second cross bar assembly (1123) The other end of the second crossbar assembly (1123) hinged,

   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) cross each other Hinged, the first rod (1122a) of the first cross bar assembly (1122) has a first end that is hingedly connected to the top connector (1113) of the left front pillar assembly (1110FL) and hingedly Connected to the opposite second end of the middle telescopic rod assembly (1121), the second rod (1122b) of the first cross rod assembly (1122) has a A first end of the bottom end connector (1114) and an opposite second end 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) crossing each other, and the first rod (1123a) and the second rod (1123b) cross each other Hinged, the first rod (1123a) of the second cross rod assembly (1123) has a first end connected to the top connector (1113) of the left rear pillar assembly (1110RL) in a hinged manner and a hinged The second rod (1123b) of the second cross rod assembly (1123) has a hinged connection to the left rear column assembly ( 1110RL) to a first end of a bottom end connector (1114') and an opposite second end hingedly connected to said intermediate telescoping rod assembly (1121).
5. The folding bicycle (100) according to claim 4, characterized in that, the right side folding assembly (1120R) comprises a middle telescopic rod assembly (1121) and two opposite ends of the middle telescopic rod assembly (1121) a first cross bar assembly (1122) and a second cross bar assembly (1123) hingedly connected,

   The middle telescopic rod assembly (1121) of the right side folding assembly (1120R) includes an inner rod (1121b) and an outer tube (1121a) sleeved on the inner rod (1121b) so as to be linearly movable relative to it, so The lower end of the inner rod (1121b) defines one end hinged to the first cross bar assembly (1122) of the right side folding assembly (1120R) and the second cross bar assembly (1123) of the right side folding assembly (1120R) , the upper end of the outer tube (1121a) is hinged to the first cross bar assembly (1122) of the right side folding assembly (1120R) and the second cross bar assembly (1123) of the right side folding assembly (1120R). the other end of

   The first cross bar assembly (1122) of the right side folding assembly (1120R) includes a first bar (1122a) and a second bar (1122b) crossing each other, and the first bar (1122a) and the second bar The rods (1122b) are hinged to each other at intersections, the first rod (1122a) of the first cross rod assembly (1122) has a top link (1113) that is hingedly connected to the right front pillar assembly (1110FR) The first end and the 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 side folding assembly (1120R) ) has a first end hingedly connected to the bottom end connector (1114) of the right front pillar assembly (1110FR) and an opposite second end hingedly connected to the middle telescopic rod assembly (1121) ,

   The second cross bar assembly (1123) of the right side folding assembly (1120R) includes a first bar (1123a) and a second bar (1123b) crossing each other, and the first bar (1123a) and the second bar The rods (1123b) are hinged to each other at intersections, the first rod (1123a) of the second cross rod assembly (1123) has a top link (1113) hingedly connected to the right rear upright assembly (1110RR) The first end of the first end and the opposite second end connected to the middle telescopic rod assembly (1121) in a hinged manner, the second rod ( 1123b) has a first end that is hingedly connected to the bottom end connector (1114') of the right rear pillar assembly (1110RR) and an opposite end that is hingedly connected to the middle telescoping rod assembly (1121) second end.
6. The folding bicycle (100) according to claim 5, characterized in that, the chassis assembly (1140) comprises:

   First chassis half assembly (1140a) and second chassis half assembly (1140b), both of which are hinged to each other, while said first chassis half assembly (1140a) and said left front pillar assembly (1110FL) , the bottom end connector (1114) of the right front pillar assembly (1110FR) and the base (1134) of the front folding assembly (1130F) are hingedly connected, and the second chassis half assembly (1140b) It is hingedly connected with the left rear pillar assembly (1110RL), the bottom end connector (1114') of the right rear pillar assembly (1110RR) and the base (1134) of the rear end folding assembly (1130R) .
7. The folding bicycle (100) according to claim 6, 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), the first rod The member (1141a) and the second rod member (1142a) cross each other and are hinged to each other at the intersection point, and the third rod member (1143a) and the fourth rod member (1144a) cross each other and are hinged at the intersection point hinged to each other;

   The second chassis half assembly (1140b) includes a first rod (1141b), a second rod (1142b), a third rod (1143b) and a fourth rod (1144b), the first rod The member (1141b) and the second rod member (1142b) cross each other and are hinged to each other at the intersection point, and the third rod member (1143b) and the fourth rod member (1144b) cross each other and are hinged at the intersection point hinged to each other.
8. The folding bicycle (100) according to claim 7, characterized in that,

   The first rod (1141a) of the first chassis half assembly (1140a) has a first end hingedly connected to the bottom end connector (1114) of the left front pillar assembly (1110FL), the The second rod (1142a) and the third rod (1143a) of the first chassis half assembly (1140a) each have a first hingedly connected to the base (1134) of the front folding assembly (1130F) At one end, the fourth rod (1144a) of the first chassis half assembly (1140a) has a first end hingedly connected to the bottom end connector (1114) of the right front pillar assembly (1110FR) ;

   The first rod (1141b) of the second chassis half assembly (1140b) has a first end hingedly connected to the bottom end connector (1114') of the left rear pillar assembly (1110RL), The second rod (1142b) and the third rod (1143b) of the second chassis half assembly (1140b) each have a base (1134) of the rear end folding assembly (1130R) in a hinged manner connected to the first end, the fourth rod (1144b) of the second chassis half assembly (1140b) has a bottom end connector (1114') of the right rear pillar assembly (1110RR) in a hinged manner connected first end;

   The first chassis half assembly (1140a) and the second chassis half assembly (1140b) via their corresponding first rods (1141a, 1141b), second rods (1142a, 1142b), The opposite second ends of the third rod (1143a, 1143b) and the fourth rod (1144a, 1144b) are hinged to each other.
9. The folding bicycle (100) according to claim 8, characterized in that,

   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) are connected to the A pivot axis (1140Oa) defined between said front left pillar assembly (1110FL), said front fold assembly (1130F), said front right pillar assembly (1110FR), a second chassis half assembly (1140b) The first end of a rod (1141b), the second rod (1142b), the third rod (1143b) and the fourth rod (1144b) are folded with the left rear column assembly (1110RL), the rear end assembly (1130R), pivot axis (1140Ob) defined between said right rear pillar assembly (1110RR), said first chassis half assembly (1140a) and said second chassis half assembly (1140b) The pivot axes (1140O) defined therebetween are parallel to each other.
10. The folding bicycle (100) according to claim 9, characterized in that, the second end of the second rod (1142a) of the first chassis half assembly (1140a) and the second chassis half The second end of the second rod (1142b) of the assembly (1140b) is hingedly connected to a sliding sleeve that can linearly slide on the middle telescopic rod assembly (1121) of the left folding assembly (1120L) (1124);

    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) together It is hingedly connected to a sliding sleeve ( 1124 ) that can slide linearly on the middle telescopic rod assembly ( 1121 ) of the right side folding assembly ( 1120R).
11. The folding bicycle (100) according to claim 10, characterized in that, the sliding sleeve (1124) of the left folding assembly (1120L) is on the middle telescopic rod assembly (1121) of the left folding assembly (1120L) The outer tube (1121a) of the right folding assembly (1120R) is sleeved on the outer tube (1121a) of the middle telescopic rod assembly (1121) of the right folding assembly (1120R). set.
12. The folding bicycle (100) according to claim 11, further comprising an auxiliary support cross bar assembly (1150), so that when the vehicle frame (110) is in an unfolded state, the chassis assembly (1140 ) below to provide support for it, the auxiliary support cross bar assembly (1150) includes a first bar (1150a) and a second bar (1150b), and the first bar (1150a) and the second bar (1150b) each Having first ends hinged to each other, the opposite second end of the first rod (1150a) is hingedly connected to the inner rod of the middle telescopic rod assembly (1121) of the left side folding assembly (1120L) (1121b); the opposite second end of the second rod (1150b) is hingedly connected to the inner rod (1121b) of the middle telescopic rod assembly (1121) of the right side folding assembly (1120R) lower end.
13. The folding bicycle (100) according to claim 12, characterized in that, each of the left rear column assembly (1110RL) and the right rear column assembly (1110RR) includes a push handle fixed parallel to its telescopic rod assembly The rod assembly (1115), the wheel assembly (120RL) connected to said left rear pillar assembly (1110RL) and the wheel assembly (120RR) connected to said right rear pillar assembly (1110RR) have a common axis of rotation, and the common The rotation axis is located between the longitudinal central axis of the telescopic rod assembly of the left rear column assembly (1110RL) and the longitudinal central axis of the push handle rod assembly (1115) and between the telescopic rod assembly of the right rear column assembly (1110RR) Between the longitudinal central axis of and the longitudinal central axis of the push handle bar assembly (1115).
14. The folding bicycle (100) according to claim 13, further comprising a push handle assembly (1160) that can be folded in the width direction of the vehicle frame (110), and the push handle assembly (1160) is respectively The push bar assembly (1115) of the left rear column assembly (1110RL) and the push bar assembly (1115) of the right rear column assembly (1110RR) are hingedly connected.
15. The folding bicycle (100) according to claim 14, further comprising a pull rod assembly (1170), the pull rod assembly (1170) includes a base (1134) hinged with the front folding assembly (1130F) A first end connected in a manner and an opposite free second end for gripping by a user.
16. The folding bicycle (100) according to claim 15, characterized in that, the pull rod assembly (1170) comprises two outer rods (1172) fixedly spaced from each other and installed between the two outer rods (1172) and an inner double rod (1171) that can slide linearly relative to the outer rod (1172),

    A retainer (1180) is provided on the upper connecting beam (1131) of the front folding assembly (1130F) to selectively engage and lock the inner double rod (1171).
17. The folding bicycle (100) according to claim 16, further comprising an auxiliary unfolding bracket (1190) that can be folded in the width direction of the vehicle frame (110), and the auxiliary unfolding bracket (1190) is respectively Hingedly connected to the left rear pillar assembly (1110RL) and the Push handle rod assembly (1115) of right rear pillar assembly (1110RR).

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