Simple folding type folding bicycle

Abstract

The utility model provides a simple folding type folding bicycle which comprises four corner stand columns provided with hinge seats, side frames formed by two parallelograms distributed front and back are arranged between the two hinge seats located on the left side of the folding bicycle, and side frames formed by two parallelograms distributed front and back are arranged between the two hinge seats located on the right side of the folding bicycle. The two adjacent inner ends of the two parallelograms are hinged through a middle support, and the outer ends of the two parallelograms are hinged to the corresponding hinge bases respectively. An interval is formed between the upper and lower connecting rods of the parallelogram; each hinge seat is provided with a first upper supporting surface and a first lower supporting surface at the outer side ends of the upper connecting rod and the lower connecting rod of the parallelogram, and each middle support is provided with a second upper supporting surface and a second lower supporting surface at the inner side ends of the upper connecting rod and the lower connecting rod of the parallelogram at the front side and the rear side; the simple folding type folding bicycle has a certain side face height and does not need to be arranged in association with four trundle assemblies, and a new supporting scheme is designed to obtain high supporting strength.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of folding bicycle, specifically is a simple and easy to fold folding bicycle. BACKGROUND

[0002] For example, in outdoor leisure activities, small trailers used for carrying objects are very important tools, and to facilitate use, they are usually foldable, so the structure is relatively complex.

[0003] In the prior art, someone has proposed a large load-bearing folding trolley with application publication number CN 118124649 A, which aims to solve the technical problem of "overcoming the defects of small load-bearing, small capacity and single function of the existing folding trolley", and is not for the purpose of simplifying the structure, so the large load-bearing folding trolley cancels the side frame, but sets two parallel first support cross beams on the chassis, and the first support cross beam includes a first parallelogram rod group, a second parallelogram rod group and a connecting seat between the first and second parallelogram rod groups, one end of the first parallelogram rod group is hinged to the corresponding wheel assembly, and the other end is hinged to one side of the connecting seat; one end of the second parallelogram rod group is hinged to the corresponding wheel assembly, and the other end is hinged to the other side of the connecting seat, thereby having the following advantages: 1) the first support cross beam is matched with the first and second parallelogram rod groups and the connecting seat, and when unfolded, the upper support rod is stacked on the lower support rod to form a double-bar structure, which can effectively increase the strength of the support cross beam and thereby increase the load-bearing capacity of the trolley; a reinforcing assembly is also provided to further increase the load-bearing capacity of the trolley and make the structure stable and reliable; it not only increases the strength of the support cross beam, but also does not affect the folding function of the chassis assembly, and is very convenient to use; 2) due to the increased strength of the support cross beam, the trolley does not need to set up traditional side frame folding assemblies on both sides, and the side frame assembly and the handle assembly can be opened outward, adopting a fully open trolley, which on the one hand limits the size of the loaded objects, has a larger overall loading capacity, and is also convenient to load; on the other hand, the trolley can be used as a chair or a bed, which is also convenient for pets to get on and off, greatly improving its functionality and making it more functional; 3) the overall size after folding is small, which is convenient for storage and storage.

[0004] From the above, in order to increase the support strength when unfolding, the upper support rod is stacked on the lower support rod to form a double rod structure when unfolding, so that the side height is only the height of the first support cross beam, and in order to increase the load capacity of the trolley, one end of the first parallelogram rod group is hinged to the corresponding wheel assembly, and the other end is hinged to one side of the connecting seat; one end of the second parallelogram rod group is hinged to the corresponding wheel assembly, and the other end is hinged to the other side of the connecting seat, that is, the two ends of the two first support cross beams are respectively hinged to the four wheel assemblies and supported, so that the wheel assembly arrangement cannot be arranged alone and must be arranged in association with the first support cross beam.

[0005] The application will provide a simple folding trolley which has a certain side height and does not need to be arranged in association with four wheel assemblies, and a new support scheme is designed to obtain high support strength. Content of the utility model

[0006] The technical problem to be solved by the utility model is to overcome the defects of the prior art, provide a simple folding trolley which has a certain side height and does not need to be arranged in association with four wheel assemblies, and a new support scheme is designed to obtain high support strength.

[0007] To solve the above technical problems, the utility model provides a simple folding trolley, which comprises four corner columns arranged at four corners of the folding trolley, the four corner columns are sequentially first corner columns, second corner columns, third corner columns and fourth corner columns along the circumference of the bottom frame, the first corner columns and the second corner columns located at the front side of the folding trolley serve as two side rods of a front frame, the third corner columns and the fourth corner columns located at the rear side of the folding trolley serve as two side rods of a rear frame, the lower ends of the four corner columns are all provided with hinge seats, two side frames composed of two parallelograms distributed in front and back are arranged between the two hinge seats located at the left side of the folding trolley and between the two hinge seats located at the right side of the folding trolley, and the two inner ends of the two adjacent parallelograms are hinged through a middle hinge seat, and the outer ends of the two parallelograms are respectively hinged to the corresponding hinge seats.

[0008] In addition, a space is arranged between the upper and lower connecting rods of the parallelogram.

[0009] And, each of the hinge seats is provided with a first upper support surface and a first lower support surface at the outer side ends of the upper and lower links of the parallelogram, when the parallelogram is unfolded into a flat lying state, the first upper support surface abuts against the lower side of the upper link at the inner side of the first hinge axis, the first upper support surface is used to prevent the upper link from continuing to swing downward when the parallelogram is unfolded to play an unfolding support role, and / or, the first lower support surface abuts against the upper side of the upper link at the outer side of the first hinge axis, the first lower support surface is used to prevent the tail of the upper link from continuing to swing upward when the parallelogram is unfolded, thereby preventing the upper link from continuing to swing downward to play an unfolding support role, and / or, the first upper support surface abuts against the lower side of the lower link at the inner side of the second hinge axis, the first upper support surface is used to prevent the lower link from continuing to swing downward when the parallelogram is unfolded to play an unfolding support role, and / or, the first lower support surface abuts against the upper side of the lower link at the outer side of the second hinge axis, the first lower support surface is used to prevent the tail of the lower link from continuing to swing upward when the parallelogram is unfolded, thereby preventing the lower link from continuing to swing downward to play an unfolding support role.

[0010] And, each of the hinge seats is provided with a first upper support surface and a first lower support surface at the outer side ends of the upper and lower links of the parallelogram, when the parallelogram is unfolded into a flat lying state, the first upper support surface abuts against the lower side of the upper link at the inner side of the first hinge axis, the first upper support surface is used to prevent the upper link from continuing to swing downward when the parallelogram is unfolded to play an unfolding support role, and / or, the first lower support surface abuts against the upper side of the upper link at the outer side of the first hinge axis, the first lower support surface is used to prevent the tail of the upper link from continuing to swing upward when the parallelogram is unfolded, thereby preventing the upper link from continuing to swing downward to play an unfolding support role, and / or, the first upper support surface abuts against the lower side of the lower link at the inner side of the second hinge axis, the first upper support surface is used to prevent the lower link from continuing to swing downward when the parallelogram is unfolded to play an unfolding support role, and / or, the first lower support surface abuts against the upper side of the lower link at the outer side of the second hinge axis, the first lower support surface is used to prevent the tail of the lower link from continuing to swing upward when the parallelogram is unfolded, thereby preventing the lower link from continuing to swing downward to play an unfolding support role.

[0011] As an improvement, the hinge seat is provided with a first support part between the upper and lower links of the parallelogram at the outer side ends, the upper end of the first support part provides the first upper support surface, and the lower end of the first support part provides the first lower support surface.

[0012] And, the middle support is provided with a second support part between the inner side ends of the upper and lower links of the parallelogram at the front and rear sides, the upper end of the second support part provides the second upper support surface, and the lower end of the second support part provides the second lower support surface.

[0013] As an improvement, the first support part is provided as a first vertical block arranged between the first and second hinge shafts;

[0014] And the second support part is provided as a second vertical block arranged between the third and fourth hinge shafts.

[0015] As an improvement, the first vertical block is fixedly arranged with the hinge seat or integrally arranged with the hinge seat;

[0016] And the second vertical block is fixedly arranged with the middle support or integrally arranged with the middle support.

[0017] As an improvement, the middle support is provided with a blocking part at the upper side of the front end and / or the rear end, and the lower end of the blocking part provides a second lower support surface.

[0018] As an improvement, in the middle support, a synchronous gear is arranged between any two adjacent inner ends of the two parallelograms, and the two parallelograms are synchronously unfolded / folded through the synchronous gear.

[0019] As an improvement, the first bottom support rod includes one or more first cross support rods, one end of the first cross support rod is connected with the lower connecting rod on the left side of the front frame, and the other end of the first cross support rod is connected with the lower connecting rod on the right side of the front frame; the second bottom support rod includes one or more second cross support rods, one end of the second cross support rod is connected with the lower connecting rod on the left side of the front frame, and the other end of the second cross support rod is connected with the lower connecting rod on the right side of the front frame.

[0020] As an improvement, one or more first longitudinal support rods are arranged between the two adjacent first cross support rods; and one or more second longitudinal support rods are arranged between the two adjacent second cross support rods.

[0021] As an improvement, a front side bottom cross support rod is arranged between the first corner column and the second corner column, and the front side bottom cross support rod is provided with a front side ground wheel; and / or a rear side bottom cross support rod is arranged between the third corner column and the fourth corner column, and the rear side bottom cross support rod is provided with a rear side ground wheel.

[0022] As an improvement, a front side top cross support rod is arranged between the first corner column and the second corner column, and the front side top cross support rod, the first corner column, the second corner column and the front side bottom cross support rod form a front frame of a mouth-shaped frame; and / or a rear side top cross support rod is arranged between the third corner column and the fourth corner column, and the rear side top cross support rod, the first corner column, the second corner column and the front side bottom cross support rod form a rear frame of the mouth-shaped frame.

[0023] Compared with the prior art, the utility model has the advantages that: through the structural design, the lower end of the four corner columns is provided with a hinge seat, two parallel quadrilaterals composed of front and back distribution are arranged between the two hinge seats on the left side of the folding vehicle and between the two hinge seats on the right side of the folding vehicle, the two inner ends of the two adjacent parallel quadrilaterals are hingedly connected through a middle support, the outer ends of the two parallel quadrilaterals are hingedly connected with the corresponding hinge seats, the first upper support surface and the first lower support surface are arranged on the outer side of the upper and lower connecting rods of the parallel quadrilateral of each hinge seat, the second upper support surface and the second lower support surface are arranged on the inner side of the upper and lower connecting rods of the parallel quadrilateral of each middle support, therefore, when the parallel quadrilateral is unfolded into a flat lying state, the four hinge seats and the two middle supports can provide multiple supports, the stress of the two middle supports can be further dispersed to the four hinge seats, the four hinge seats and the two middle supports form multiple supports along the circumference of the chassis of the folding vehicle, for example, 16 supports along the circumference of the chassis of the folding vehicle, therefore, on the one hand, the higher support strength can be obtained, on the other hand, the requirement for the thickness of the rod material in the parallel quadrilateral can be reduced, thereby, the weight is reduced without affecting the support performance.

[0024] Meanwhile, since the hinge seats are arranged at the lower ends of the four corner columns, the four wheel components need not be arranged in association, and since the new support scheme need not stack the upper support rods on the lower support rods to form a double rod structure, and the upper and lower connecting rods of the parallel quadrilateral are provided with a spacing, the side height can be certain. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a three-dimensional schematic view of a folding vehicle in an unfolded state according to the simple folding type of the present disclosure.

[0026] Figure 2 It is a top view of the folding vehicle in the unfolded state according to the simple folding type of the present disclosure.

[0027] Figure 3 It is a sectional view along A-A.

[0028] Figure 4 It is a three-dimensional schematic view of the folding vehicle in a folded state according to the simple folding type of the present disclosure.

[0029] Figure 5 It is a three-dimensional schematic view of the folding vehicle in the unfolded state according to the simple folding type of the present disclosure, and a cloth bag is arranged.

[0030] Figure 6 It is a three-dimensional schematic view of the folding vehicle in the unfolded state according to the simple folding type of the present disclosure, and a cloth bag is arranged.

[0031] Figure 7 Figure 7 is a right view of a folding vehicle in an unfolded state and with ground wheels installed according to an embodiment of the present disclosure.

[0032] Figure 8 Figure 8 is a front view of a folding vehicle in an unfolded state and with ground wheels installed according to an embodiment of the present disclosure.

[0033] Figure 9 Figure 9 is a cross-sectional view of a folding vehicle in an unfolded state and with three supports at the hinge seat according to an embodiment of the present disclosure.

[0034] As shown in the figure, 1 is a hinge seat, 2 is a first hinge shaft, 3 is a second hinge shaft, 4 is a middle support, 5 is a third hinge shaft, 6 is a fourth hinge shaft, 7 is a first upper support surface, 8 is a first lower support surface, 9 is a second upper support surface, 10 is a second lower support surface, 11 is a strap, 12 is a blocking part, 13 is a synchronous gear, 14 is an upper connecting rod, 15 is a lower connecting rod, 16 is a first horizontal support rod, 17 is a second horizontal support rod, 18 is a first vertical support rod, 19 is a second vertical support rod, 20 is a front bottom horizontal support rod, 21 is a rear bottom horizontal support rod, 22 is a front top horizontal support rod, 23 is a rear top horizontal support rod, 24 is a first corner column, 25 is a second corner column, 26 is a third corner column, 27 is a fourth corner column, 28 is a cloth bag, 29 is a front ground wheel, 30 is a rear ground wheel, 31 is a first vertical block, 32 is a second vertical block, and 33 is a handle. DETAILED DESCRIPTION

[0035] The following description is provided to enable any person skilled in the art to make and use the present application. The embodiments described in the following are only examples of the present application, and other obvious modifications can be made by those skilled in the art. The basic principles defined in the following description can be applied to other embodiments, variations, improvements, equivalents and other technical solutions without departing from the spirit and scope of the present application.

[0036] Those skilled in the art should understand that in the disclosure of the present application, the orientations or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the above terms cannot be understood as a limitation of the present application.

[0037] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0038] like Figures 1 to 7 The present invention discloses a simple folding bicycle, which includes four corner posts at the four corners of the bicycle. The four corner posts are arranged in sequence along the circumference of the base frame as a first corner post 24, a second corner post 25, a third corner post 26, and a fourth corner post 27. The first corner post 24 and the second corner post 25 located on the front side of the bicycle serve as two side posts of the front frame, and the third corner post 26 and the fourth corner post 27 located on the rear side of the bicycle serve as two side posts of the rear frame.

[0039] In this example, the front frame is set as a U-shaped structure. Specifically, a front top horizontal brace 22 is provided between the first corner column 24 and the second corner column 25. The front top horizontal brace 22, the first corner column 24, the second corner column 25, and the front bottom horizontal brace 20 form the U-shaped frame front frame. A rear top horizontal brace 23 is provided between the third corner column 26 and the fourth corner column 27. The rear top horizontal brace 23, the first corner column 24, the second corner column 25, and the front bottom horizontal brace 20 form the U-shaped frame rear frame.

[0040] Of course, the front and rear frames can also be other structures, such as X-shaped frame front frame, X-shaped frame rear frame, U-shaped frame front frame, U-shaped frame rear frame, and H-shaped frame front frame, H-shaped frame rear frame, etc.

[0041] like Figure 1 , 3 As shown, each of the four corner columns has a hinge seat 1 at its lower end. Between the two hinge seats 1 on the left side of the folding vehicle and between the two hinge seats 1 on the right side of the folding vehicle, there is a side frame composed of two parallelograms distributed front and back. The two inner ends of the two parallelograms are hinged through the middle support 4, and the outer ends of the two parallelograms are respectively hinged to the corresponding hinge seat 1.

[0042] When the hinge seat 1 is hinged, each hinge seat 1 has a first upper support surface 7 and a first lower support surface 8 on the outer ends of the upper and lower connecting rods of the parallelogram. For example, the right side is shown in the case of the hinge seat 1. Figure 3 As shown, the left side can also be set up in the same way as the right side, that is, the left and right sides are set up symmetrically.

[0043] When hinged to the middle support 4, each middle support 4 is provided with a second upper support surface 9 and a second lower support surface 10 on the inner ends of the upper and lower connecting rods of the parallelogram on both the front and rear sides. For example, the right side is shown in the case of the second support 4. Figure 3 As shown, the left side can also be set symmetrically to the right side, that is, the left and right sides are set symmetrically.

[0044] As shown in Figure 3 the first upper support surface 7 is in abutment with the lower side of the upper link 14 located inside the first hinge shaft 2, and the first upper support surface 7 is used to prevent the upper link 14 from continuing to swing downward when the parallelogram is unfolded, thereby playing an unfolding support role, and the first lower support surface 8 is in abutment with the upper side of the lower link 15 located outside the second hinge shaft 3, and the first lower support surface 8 is used to prevent the tail of the lower link 15 from continuing to swing upward when the parallelogram is unfolded, thereby preventing the lower link 15 from continuing to swing downward, thereby playing an unfolding support role, thereby forming 2 supports, and similarly, the left front hinge seat 1, the right rear hinge seat 1, and the left rear hinge seat 1 also have 2 supports, thereby forming 8 supports.

[0045] For the support at the hinge seat 1, it can also be other structures, for example, the first lower support surface 8 is used to prevent the tail of the upper link 14 from continuing to swing upward when the parallelogram is unfolded, thereby preventing the upper link 14 from continuing to swing downward, thereby playing an unfolding support role, and the first upper support surface 7 is in abutment with the lower side of the lower link 15 located inside the second hinge shaft 3, and the first upper support surface 7 is used to prevent the lower link 15 from continuing to swing downward when the parallelogram is unfolded, thereby playing an unfolding support role, thereby forming 2 supports at one hinge seat 1, and then four hinge seats 1 can reach a total of 8 supports.

[0046] For example, as shown in Figure 9 the first upper support surface 7 is in abutment with the lower side of the upper link 14 located inside the first hinge shaft 2, and the first upper support surface 7 is used to prevent the upper link 14 from continuing to swing downward when the parallelogram is unfolded, thereby playing an unfolding support role, and the first lower support surface 8 is in abutment with the upper side of the upper link 14 located outside the first hinge shaft 2, and the first lower support surface 8 is used to prevent the tail of the upper link 14 from continuing to swing upward when the parallelogram is unfolded, thereby preventing the upper link 14 from continuing to swing downward, thereby playing an unfolding support role, and the first lower support surface 8 is in abutment with the upper side of the lower link 15 located outside the second hinge shaft 3, and the first lower support surface 8 is used to prevent the tail of the lower link 15 from continuing to swing upward when the parallelogram is unfolded, thereby preventing the lower link 15 from continuing to swing downward, thereby playing an unfolding support role, thereby forming 3 supports at one hinge seat 1, and then four hinge seats 1 can reach a total of 12 supports.

[0047] For example, the first upper support surface 7 abuts against the lower side of the upper link 14 on the outside of the first hinge axis 2, the first upper support surface 7 being used to prevent the upper link 14 from continuing to swing upwards when the parallelogram is unfolding, thus preventing the upper link 14 from continuing to swing downwards to act as an unfolding support, the first lower support surface 8 abuts against the upper side of the lower link 15 on the inside of the second hinge axis 3, the first lower support surface 8 being used to prevent the lower link 15 from continuing to swing downwards when the parallelogram is unfolding to act as an unfolding support, the first upper support surface 7 abuts against the lower side of the upper link 14 on the outside of the first hinge axis 2, the first upper support surface 7 being used to prevent the upper link 14 from continuing to swing upwards when the parallelogram is unfolding, thus preventing the upper link 14 from continuing to swing downwards to act as an unfolding support, the first lower support surface 8 abuts against the upper side of the lower link 15 on the outside of the second hinge axis 3, the first lower support surface 8 being used to prevent the lower link 15 from continuing to swing upwards when the parallelogram is unfolding, thus preventing the lower link 15 from continuing to swing downwards to act as an unfolding support, so that the support at one hinge seat 1 can be as many as 3 supports, and then four hinge seats 1 can reach a total of 12 supports.

[0048] For example, the first upper support surface 7 abuts against the lower side of the upper link 14 on the inside of the first hinge axis 2, the first upper support surface 7 being used to prevent the upper link 14 from continuing to swing downwards when the parallelogram is unfolding to act as an unfolding support, the first lower support surface 8 abuts against the upper side of the upper link 14 on the outside of the first hinge axis 2, the first lower support surface 8 being used to prevent the tail of the upper link 14 from continuing to swing upwards when the parallelogram is unfolding, thus preventing the upper link 14 from continuing to swing downwards to act as an unfolding support, the first upper support surface 7 abuts against the lower side of the lower link 15 on the inside of the second hinge axis 3, the first upper support surface 7 being used to prevent the lower link 15 from continuing to swing downwards when the parallelogram is unfolding to act as an unfolding support, the first lower support surface 8 abuts against the upper side of the lower link 15 on the outside of the second hinge axis 3, the first lower support surface 8 being used to prevent the tail of the lower link 15 from continuing to swing upwards when the parallelogram is unfolding, thus preventing the lower link 15 from continuing to swing downwards to act as an unfolding support, so that the support at one hinge seat 1 can be as many as 4 supports, and then four hinge seats 1 can reach a total of 16 supports.

[0049] As Figure 3As shown, for example, at the right middle support 4, when the parallelogram is unfolded to lie flat, the second upper support surface 9 abuts against the lower side of the upper link 14 inside the third hinge axis 5, and the second upper support surface 9 is used to prevent the inside end of the upper link 14 from continuing to swing downward when the parallelogram is unfolded, thus serving as an unfolding support, and the second lower support surface 10 abuts against the upper side of the lower link 15 outside the fourth hinge axis 6, and the second lower support surface 10 is used to prevent the part of the lower link 15 outside the fourth hinge axis 6 from continuing to swing upward relative to the second lower support surface 10 when the parallelogram is unfolded, thus preventing the lower link 15 from continuing to swing downward, thus serving as an unfolding support. Thus, because two parallelograms are designed to be distributed in front of and behind the middle support 4, four supports are formed at one middle support 4, and two middle supports 4 can thus provide a total of eight supports.

[0050] For the support at the middle support 4, other structures can also be used, for example, the second lower support surface 10 abuts against the upper side of the upper link 14 outside the third hinge axis 5, and the second lower support surface 10 is used to prevent the part of the upper link 14 outside the third hinge axis 5 from continuing to swing upward relative to the second lower support surface 10 when the parallelogram is unfolded, thus preventing the upper link 14 from continuing to swing downward, thus serving as an unfolding support, and the second upper support surface 9 abuts against the lower side of the lower link 15 inside the fourth hinge axis 6, and the second upper support surface 9 is used to prevent the inside end of the lower link 15 from continuing to swing downward when the parallelogram is unfolded, thus serving as an unfolding support. Thus, four supports are also formed at one middle support 4, and two middle supports 4 can thus provide a total of eight supports.

[0051] For the support at the middle support 4, other structures can also be used, for example, the second lower support surface 10 abuts against the upper side of the upper link 14 outside the third hinge axis 5, and the second lower support surface 10 is used to prevent the part of the upper link 14 outside the third hinge axis 5 from continuing to swing upward relative to the second lower support surface 10 when the parallelogram is unfolded, thus preventing the upper link 14 from continuing to swing downward, thus serving as an unfolding support, and the second upper support surface 9 abuts against the lower side of the lower link 15 inside the fourth hinge axis 6, and the second upper support surface 9 is used to prevent the inside end of the lower link 15 from continuing to swing downward when the parallelogram is unfolded, thus serving as an unfolding support. Thus, four supports are also formed at one middle support 4, and two middle supports 4 can thus provide a total of eight supports.

[0052] For example, the second upper support surface 9 is in abutment with the lower side of the upper link 14 inside the third hinge shaft 5, and the second upper support surface 9 is used to prevent the inside end of the upper link 14 from continuing to swing downward to provide unfolding support when the parallelogram unfolds, the second lower support surface 10 is in abutment with the upper side of the upper link 14 outside the third hinge shaft 5, and the second lower support surface 10 is used to prevent the part of the upper link 14 outside the third hinge shaft 5 from continuing to swing upward relative to the second lower support surface 10 when the parallelogram unfolds, thereby preventing the upper link 14 from continuing to swing downward to provide unfolding support, the second upper support surface 9 is in abutment with the lower side of the lower link 15 inside the fourth hinge shaft 6, and the second upper support surface 9 is used to prevent the inside end of the lower link 15 from continuing to swing downward to provide unfolding support when the parallelogram unfolds, and the second lower support surface 10 is in abutment with the upper side of the lower link 15 outside the fourth hinge shaft 6, and the second lower support surface 10 is used to prevent the part of the lower link 15 outside the fourth hinge shaft 6 from continuing to swing upward relative to the second lower support surface 10 when the parallelogram unfolds, thereby preventing the lower link 15 from continuing to swing downward to provide unfolding support, so that there are also 6 supports at one middle support 4, and then 2 middle supports 4 can reach a total of 12 supports.

[0053] For example, the second upper support surface 9 is in abutment with the lower side of the upper link 14 inside the third hinge shaft 5, and the second upper support surface 9 is used to prevent the inside end of the upper link 14 from continuing to swing downward to provide unfolding support when the parallelogram unfolds, the second lower support surface 10 is in abutment with the upper side of the upper link 14 outside the third hinge shaft 5, and the second lower support surface 10 is used to prevent the part of the upper link 14 outside the third hinge shaft 5 from continuing to swing upward relative to the second lower support surface 10 when the parallelogram unfolds, thereby preventing the upper link 14 from continuing to swing downward to provide unfolding support, the second upper support surface 9 is in abutment with the lower side of the lower link 15 inside the fourth hinge shaft 6, and the second upper support surface 9 is used to prevent the inside end of the lower link 15 from continuing to swing downward to provide unfolding support when the parallelogram unfolds, and the second lower support surface 10 is in abutment with the upper side of the lower link 15 outside the fourth hinge shaft 6, and the second lower support surface 10 is used to prevent the part of the lower link 15 outside the fourth hinge shaft 6 from continuing to swing upward relative to the second lower support surface 10 when the parallelogram unfolds, thereby preventing the lower link 15 from continuing to swing downward to provide unfolding support, so that there are also 6 supports at one middle support 4, and then 2 middle supports 4 can reach a total of 12 supports.

[0054] As described above, in the scheme of the present disclosure, a new support scheme is used to obtain multiple supports along the circumference of the chassis of the folding vehicle in an organic way composed of four hinge seats and two middle supports.

[0055] In this example, a gap is provided between the upper and lower links of the parallelogram, which allows the upper link 14 to have a certain height and form a certain side with the lower link 15, so that when the cloth bag 28 is installed, the cloth bag 28 and the upper link 14 together provide a certain side blocking effect.

[0056] In some embodiments, as shown in Figure 3 The first support part is provided between the upper and lower outer ends of the upper and lower links of the parallelogram, the upper end of the first support part provides a first upper support surface 7, and the lower end of the first support part provides a first lower support surface 8. The second support part is provided between the upper and lower inner ends of the upper and lower links of the parallelogram on the front and rear sides of the middle support, the upper end of the second support part provides a second upper support surface 9, and the lower end of the second support part provides a second lower support surface 10. In this way, the structure is more compact, which is conducive to reducing the volume.

[0057] Further, the first support part is in the form of a first vertical block 31, which is distributed between the front and rear of the first and second hinge shafts 2 and 3. The second support part is in the form of a second vertical block 32, which is distributed between the front and rear of the third and fourth hinge shafts 5 and 6. In this way, the first upper support surface 7 and the first lower support surface 8 are opposite each other and cancel each other out when under stress, avoiding one-way stress and forming better mechanical support. In addition, this is conducive to simplifying the structure and facilitating production and manufacturing.

[0058] Further, the first vertical block 31 is fixedly connected with the hinge seat 1 or integrally provided with the hinge seat 1. The second vertical block 32 is fixedly connected with the middle support 4 or integrally provided with the middle support 4. Preferably, the first vertical block 31 and the hinge seat 1 are integrally formed by injection molding, and the second vertical block 32 and the hinge seat 1 are integrally formed by injection molding. In this way, production and manufacturing are more convenient, costs are reduced, and weight is reduced.

[0059] In some embodiments, the middle support 4 is provided with a blocking part 12 on the upper side of the front and / or rear side end, the lower end of the blocking part 12 providing the second lower support surface 10. As shown in Figure 3 The blocking part 12 is bent downward to form a bending part, and the lower end surface of the bending part provides the second lower support surface 10. This is an optional technical solution.

[0060] In some embodiments, the middle support 4 is provided with a synchronous gear 13 between any two adjacent inner ends of the two parallelograms, and the two parallelograms are synchronously unfolded / folded through the synchronous gear 13. After synchronous folding, as shown in Figure 4 .

[0061] In this example, as shown in Figure 3 One synchronous gear is arranged at each of the adjacent two inner ends of the lower links of the two parallelograms, and the two synchronous gears are meshed with each other. Of course, other structures are also possible, such as one synchronous gear arranged at each of the adjacent two inner ends of the upper links of the two parallelograms, and the two synchronous gears are meshed with each other.

[0062] In some embodiments, as shown in Figure 1 ,2 As shown in the drawings, the first bottom support rod comprises one or more first cross support rods 16, one end of the first cross support rod 16 being connected with the left lower connecting rod 15 located at one side of the front frame, and the other end of the first cross support rod 16 being connected with the right lower connecting rod 15 located at one side of the front frame; the second bottom support rod comprises one or more second cross support rods 17, one end of the second cross support rod 17 being connected with the left lower connecting rod 15 located at one side of the front frame, and the other end of the second cross support rod 17 being connected with the right lower connecting rod 15 located at one side of the front frame. In this way, the four lower connecting rods 15 and the corresponding first cross support rods 16 and second cross support rods 17 form a relatively strong bottom frame, and the bottom frame provides a relatively good support range for the articles.

[0063] Further, one or more first longitudinal support rods 18 are arranged between the two adjacent first cross support rods 16, and one or more second longitudinal support rods 19 are arranged between the two adjacent second cross support rods 17.

[0064] In some embodiments, as shown in the drawings, Figure 5 , 6 The cloth bag 28 is provided with a pull handle 33 at the inner bottom and a binding belt 11 at the outer bottom, the binding belt 11 connecting the adjacent first cross support rod 16 and second cross support rod 17 located at the middle together, and by pulling the pull handle 33, the cloth bag 28 pulls the first cross support rod 16 and second cross support rod 17 upward through the binding belt 11, thereby indirectly driving the lower connecting rod 15 to move upward, so that the entire folding vehicle is folded upward to achieve the folding purpose, and the reverse movement unfolds.

[0065] In some embodiments, as shown in the drawings, Figure 7 The front side bottom cross support rod 20 is arranged between the first corner upright 24 and the second corner upright 25, and the front side ground wheel 29 is arranged on the front side bottom cross support rod 20, and the lower end or the hinge seat 1 of the third corner upright 26 and the fourth corner upright 27 is arranged with the rear side ground wheel 30. It can be seen that in the present disclosure, the arrangement of the ground wheel or caster is irrelevant to the arrangement of the upper and lower connecting rods of the parallelogram.

[0066] Of course, other structures can also be used, for example, the front side bottom cross support rod 20 is arranged between the first corner upright 24 and the second corner upright 25, and the front side ground wheel 29 is arranged on the front side bottom cross support rod 20, the rear side bottom cross support rod 21 is arranged between the third corner upright 26 and the fourth corner upright 27, and the rear side ground wheel 30 is arranged on the rear side bottom cross support rod 21.

[0067] For another example, the front side ground wheel 29 is arranged at the lower end or the hinge seat 1 of the first corner upright 24 and the second corner upright 25, the rear side bottom cross support rod 21 is arranged between the third corner upright 26 and the fourth corner upright 27, and the rear side ground wheel 30 is arranged on the rear side bottom cross support rod 21.

[0068] As shown in the drawings, Figure 1 , 4As shown, the length of the four corner posts, the length of the lower link 15, and the length of the upper link 14 are adaptively matched, so that after folding, the upper and lower end faces of the folding vehicle are in a substantially equal height state, thereby forming a final folding shape that is nearly a rectangular block, which has great benefits for packaging and logistics and is conducive to significantly reducing packaging and logistics costs.

[0069] In understanding the present application, if necessary, the above structure can refer to other embodiments / appendices Figure 1 And it is understood that here is not redundant.

[0070] The above is only an optional specific embodiment of the present application, and equivalent changes or modifications made to the structure, features and principles described in the scope of the present application patent application are included in the scope of the present application patent application.

Claims

1. A simple folding car that is folded in half, comprising four corner columns arranged at the four corners of the folding car, the four corner columns are sequentially first corner column (24), second corner column (25), third corner column (26), and fourth corner column (27) along the circumference of the chassis, the first corner column (24) and the second corner column (25) located at the front side of the folding car serve as two side rods of the front frame, and the third corner column (26) and the fourth corner column (27) located at the rear side of the folding car serve as two side rods of the rear frame, characterized in that, The lower ends of the four corner posts are provided with hinged seats (1), between the two hinged seats (1) on the left side of the folding vehicle and between the two hinged seats (1) on the right side of the folding vehicle are provided with side frames composed of two parallelograms distributed in front and back, and the two inner ends of the two parallelograms adjacent to each other are hinged by a middle support (4), and the outer ends of the two parallelograms are respectively hinged with the corresponding hinged seats (1); And, the upper and lower connecting rods of the parallelogram are provided with a gap; And, each hinged seat (1) is provided with a first upper support surface (7) and a first lower support surface (8) at the outer side ends of the upper and lower connecting rods of the parallelogram, when the parallelogram is unfolded into a flat lying state, the first upper support surface (7) abuts against the lower side of the upper connecting rod (14) on the inner side of the first hinge shaft (2), the first upper support surface (7) is used to prevent the upper connecting rod (14) from continuing to swing downward when the parallelogram is unfolded to serve as an unfolding support, and / or, the first lower support surface (8) abuts against the upper side of the upper connecting rod (14) on the outer side of the first hinge shaft (2), the first lower support surface (8) is used to prevent the tail of the upper connecting rod (14) from continuing to swing upward when the parallelogram is unfolded, thereby preventing the upper connecting rod (14) from continuing to swing downward to serve as an unfolding support, and / or, the first upper support surface (7) abuts against the lower side of the lower connecting rod (15) on the inner side of the second hinge shaft (3), the first upper support surface (7) is used to prevent the lower connecting rod (15) from continuing to swing downward when the parallelogram is unfolded to serve as an unfolding support, and / or, the first lower support surface (8) abuts against the upper side of the lower connecting rod (15) on the outer side of the second hinge shaft (3), the first lower support surface (8) is used to prevent the tail of the lower connecting rod (15) from continuing to swing upward when the parallelogram is unfolded, thereby preventing the lower connecting rod (15) from continuing to swing downward to serve as an unfolding support. And, each middle support (4) is provided with a second upper support surface (9) and a second lower support surface (10) at the inner side end of the upper and lower two connecting rods of the parallelogram on the front and rear sides, when the parallelogram is unfolded into a lying state, the second upper support surface (9) abuts against the lower side of the upper connecting rod (14) on the inner side of the third hinge shaft (5), the second upper support surface (9) is used to prevent the inner side end of the upper connecting rod (14) from continuing to swing downward when the parallelogram is unfolded to play an unfolding support role, and / or the second lower support surface (10) abuts against the upper side of the upper connecting rod (14) on the outer side of the third hinge shaft (5), the second lower support surface (10) is used to prevent the part of the upper connecting rod (14) on the outer side of the third hinge shaft (5) from continuing to swing upward relative to the second lower support surface (10) when the parallelogram is unfolded, thereby preventing the upper connecting rod (14) from continuing to swing downward to play an unfolding support role, and / or the second upper support surface (9) abuts against the lower side of the lower connecting rod (15) on the inner side of the fourth hinge shaft (6), the second upper support surface (9) is used to prevent the inner side end of the lower connecting rod (15) from continuing to swing downward when the parallelogram is unfolded to play an unfolding support role, and / or the second lower support surface (10) abuts against the upper side of the lower connecting rod (15) on the outer side of the fourth hinge shaft (6), the second lower support surface (10) is used to prevent the part of the lower connecting rod (15) on the outer side of the fourth hinge shaft (6) from continuing to swing upward relative to the second lower support surface (10) when the parallelogram is unfolded, thereby preventing the lower connecting rod (15) from continuing to swing downward to play an unfolding support role.

2. The simple fold-in-half model foldable vehicle according to claim 1, wherein, The hinge seat (1) is provided with a first support part between the outer side ends of the upper and lower two connecting rods of the parallelogram, the upper end of the first support part provides a first upper support surface (7), and the lower end of the first support part provides a first lower support surface (8); And, the middle support (4) is provided with a second support part between the upper and lower ends of the inner side ends of the upper and lower two connecting rods of the parallelogram on the front and rear sides, the upper end of the second support part provides a second upper support surface (9), and the lower end of the second support part provides a second lower support surface (10).

3. The compact fold-in-half folding vehicle of claim 2, wherein, The first support part is in the form of a first vertical block (31) which is distributed between the front and rear of the first hinge shaft (2) and the second hinge shaft (3); And, the second support part is in the form of a second vertical block (32) which is distributed between the front and rear of the third hinge shaft (5) and the fourth hinge shaft (6).

4. The compact fold-in-half folding vehicle of claim 3, wherein, The first vertical block (31) is connected and fixed with the hinge seat (1) or is integrally arranged; And, the second vertical block (32) is connected and fixed with the middle support (4) or is integrally arranged.

5. The simple fold-in-half model foldable vehicle of claim 1, wherein, The middle support (4) is provided with a blocking part (12) on the upper side of the front end and / or the rear end, and the lower end of the blocking part (12) provides the second lower support surface (10).

6. The simple folding vehicle of claim 1 or 2 or 3 or 4 or 5, wherein, In the middle support (4), a synchronous gear (13) is arranged between any two adjacent inner ends of the two parallelograms, and the two parallelograms are unfolded / folded synchronously through the synchronous gear (13).

7. The fold-up vehicle of claim 1 wherein, The chassis comprises a first bottom support rod, the first bottom support rod comprises one or more than one first cross support rod (16), one end of the first cross support rod (16) is connected with the lower connecting rod (15) on the left side of the front frame, and the other end of the first cross support rod (16) is connected with the lower connecting rod (15) on the right side of the front frame; the chassis comprises a second bottom support rod, the second bottom support rod comprises one or more than one second cross support rod (17), one end of the second cross support rod (17) is connected with the lower connecting rod (15) on the left side of the front frame, and the other end of the second cross support rod (17) is connected with the lower connecting rod (15) on the right side of the front frame.

8. The compact fold-in-half folding vehicle of claim 7, wherein, One or more than one first longitudinal support rod (18) is arranged between two adjacent first cross support rods (16); one or more than one second longitudinal support rod (19) is arranged between two adjacent second cross support rods (17).

9. The fold-up vehicle of claim 1 wherein, The front side bottom cross support rod (20) is arranged between the first corner column (24) and the second corner column (25), the front side bottom cross support rod (20) is provided with the front side ground wheel (29), and / or the rear side bottom cross support rod (21) is arranged between the third corner column (26) and the fourth corner column (27), the rear side bottom cross support rod (21) is provided with the rear side ground wheel (30).

10. The fold-up vehicle of claim 9 wherein, The front side top cross support rod (22) is arranged between the first corner column (24) and the second corner column (25), the front side top cross support rod (22), the first corner column (24), the second corner column (25) and the front side bottom cross support rod (20) form a front frame of a mouth-shaped frame; the rear side top cross support rod (23) is arranged between the third corner column (26) and the fourth corner column (27), the rear side top cross support rod (23), the first corner column (24), the second corner column (25) and the front side bottom cross support rod (20) form a rear frame of the mouth-shaped frame.

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