Folding bicycle frame and folding bicycle with same

Abstract

The utility model discloses a folding frame and a folding bicycle with the same, and the folding frame comprises a frame body, a wheel body assembly, a bottom frame structure, a first side frame structure, a second side frame structure, a third side frame structure and a fourth side frame structure, the third side frame structure comprises a third side frame piece connected to the first side frame structure and the second side frame structure and a first ceiling frame piece, the fourth side frame structure comprises a fourth side frame piece connected to the first side frame structure and the second side frame structure and a second ceiling frame piece, and in the unfolded state, the first ceiling frame piece and the second ceiling frame piece form a supporting structure used for installing and supporting a ceiling. The height of the pet placing space can be increased, so that the activity space of a pet on the car is higher, the car is suitable for bearing some high pets, in the folding state, the first ceiling frame piece is turned outwards relative to the third side frame piece to be folded, and the second ceiling frame piece is turned outwards relative to the fourth side frame piece to be folded; after being folded, the folding chair occupies small space height and is convenient to carry and store when going out.

Description

Technical Field

[0001] The utility model relates to the field of trolleys, in particular to a folding frame and a folding vehicle provided with the frame. Background Art

[0002] There are various types of trolleys on the market now. According to their uses, they can be divided into pet trolleys, baby trolleys, camping trolleys, etc. In recent years, with the continuous improvement of people's living standards, more and more people have started to raise pets and choose to use pet trolleys to take their pets out.

[0003] The prior art discloses a utility model patent for a pet trolley frame and a pet trolley (publication number: CN220465530U). The pet trolley frame includes a frame body and wheels pivotally connected to the lower end of the frame body. The frame body is completely wrapped with cloth on all sides. The frame body and the cloth form a receiving cavity for carrying pets. There is an opening at the front end of the receiving cavity, and pets can enter and exit the frame body through the opening. Since the frame body of the pet trolley frame in this technical solution is relatively short, the internal space of the receiving cavity is relatively short, and it is not suitable for carrying some pets with a relatively large body size. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the utility model provides a folding frame and a folding vehicle provided with the frame, which can increase the height of the pet placement space, so that the activity space of the pet on the vehicle is higher, is suitable for carrying some pets with a relatively large body size, and occupies a relatively small space height after folding, which is convenient for going out and storing.

[0005] A folding frame provided by the utility model includes a frame body and a wheel assembly for driving the frame body to move. The frame body includes a bottom frame structure, a first side frame structure and a second side frame structure respectively arranged on both sides of the bottom frame structure along the length direction of the bottom frame structure, and a third side frame structure and a fourth side frame structure respectively arranged on both sides of the bottom frame structure along the width direction of the bottom frame structure. The third side frame structure includes a third side frame member connected between one ends of the first and second side frame structures, and a first awning frame member rotatably connected to the upper part of the third side frame member. The fourth side frame structure includes a fourth side frame member connected between the other ends of the first and second side frame structures, and a second awning frame member rotatably connected to the upper part of the fourth side frame member. When in the unfolded state, the first awning frame member and the second awning frame member form a support structure for installing and supporting an awning. When in the folded state, the first awning frame member is folded by flipping outwards relative to the third side frame member, and the second awning frame member is folded by flipping outwards relative to the fourth side frame member.

[0006] Preferably, the first canopy frame member and the third side frame member, and the second canopy frame member and the fourth side frame member are respectively connected by a first connection structure. The first connection structure includes a connecting member provided on the third side frame member or the fourth side frame member, and a limiting member connected to the connecting member. The connecting member is rotatably connected to the first canopy frame member or the second canopy frame member through a first connecting shaft. A first limiting surface is formed on one side of the limiting member away from the first and second side frame structures. An external rotation area for the end of the first canopy frame member or the second canopy frame member to flip around the first connecting shaft is provided outside the first limiting surface. In the unfolded state, the first limiting surface abuts against the first abutting surface formed on the first canopy frame member or the second canopy frame member for limiting.

[0007] Preferably, the included angle between the first limiting surface and the third side frame member or the fourth side frame member is greater than 180° and less than 270°.

[0008] Preferably, a second limiting surface is further formed on one side of the limiting member away from the first and second side frame structures. The second limiting surface is arranged along the length direction of the third side frame member or the fourth side frame member. In the folded state, the second limiting surface abuts against the second abutting surface formed on the first canopy frame member or the second canopy frame member for limiting. The second abutting surface and the first abutting surface are oppositely arranged on both sides of the first connecting shaft.

[0009] Preferably, the second limiting surface is arranged below the first limiting surface and is connected to the first limiting surface through a rotating surface. The rotating surface is set as an arc surface coaxially arranged with the first connecting shaft. When the first canopy frame member or the second canopy frame member rotates around the axis of the first connecting shaft, its end can move between the arc surface and the first connecting shaft.

[0010] Preferably, the third and fourth side frame members respectively include a first upright column arranged at the end of the first side frame structure and a second upright column arranged at the end of the second side frame structure. The first and second canopy frame members respectively include a first canopy column connected to the first upright column through a first connection structure, a second canopy column connected to the second upright column through a first connection structure, and a canopy connecting rod connected between the first canopy column and the second canopy column. The limiting member and the rotation area are arranged between the first upright column and the second upright column. In the folded state, the first and second canopy frame members are arranged between the first upright column and the second upright column. In the unfolded state, an access passage is formed around the first upright column, the second upright column, the first canopy column, the second canopy column, the canopy connecting rod, and the bottom frame structure.

[0011] Preferably, a connecting groove is recessed from the bottom end of the connecting member. The connecting groove is sleeved on the first upright column or the second upright column and is fixedly connected to the first upright column or the second upright column relatively through a fastener. The outer surfaces of the first awning column and the second awning column are arranged as cylindrical surfaces, and the first limiting surface is arranged as an arc concave surface corresponding to the first awning column or the second awning column.

[0012] Preferably, the first and second side frame structures respectively include at least one group of two cross bars arranged crosswise and rotatably connected. The two cross bars are folded or unfolded by rotating relative to each other.

[0013] The underframe structure includes at least two underframe members arranged in sequence along its length direction. The adjacent two underframe members are rotatably connected, and the adjacent two underframe members are folded or unfolded by rotating relative to each other.

[0014] When in the unfolded state, the first awning frame member and the second awning frame member form a support structure for installing and supporting the awning. When in the folded state, the first awning frame member, the second awning frame member, and the underframe member are stacked.

[0015] Preferably, an armrest structure is installed on one side of the fourth side frame member away from the third side frame member. The armrest structure includes a third upright column and a fourth upright column arranged oppositely, and an armrest rod whose two ends are respectively rotatably connected to the third upright column and the fourth upright column through locking components.

[0016] The third and fourth upright columns are respectively connected to the fourth side frame member through a second connection structure. The second connection structure includes a mounting member fixedly connected to the fourth side frame member and a connection cylinder connected to the side away from the third side frame member of the mounting member. The third upright column and the fourth upright column are respectively sleeved in the corresponding connection cylinders and are telescopically connected to the connection cylinders. When in the unfolded state, the third upright column and the fourth upright column are respectively positioned and connected to the connection cylinders through positioning components.

[0017] A folding vehicle provided by the present utility model includes the above-mentioned folding vehicle frame and a cloth cover structure covering the first, second, third, and fourth side frame structures.

[0018] The cloth cover structure includes a door cloth member corresponding to the third side frame structure and / or the fourth side frame structure.

[0019] The cloth cover structure is provided with a first visible area arranged between the first side frame structure, the first awning frame member, and the second awning frame member, and / or the cloth cover structure is provided with a second visible area arranged between the second side frame structure, the first awning frame member, and the second awning frame member, and / or the cloth cover structure is provided with a third visible area corresponding to the third side frame structure, and / or the cloth cover structure is provided with a fourth visible area corresponding to the fourth side frame structure.

[0020] The folding frame provided by the present utility model, by setting the first awning frame member and the second awning frame member, enables the folding frame to form a support structure for installing and supporting the awning through the first awning frame member and the second awning frame member when in the unfolded state, thereby greatly increasing the height of the pet placement space, making the activity space for pets in the vehicle higher, allowing large pets to stand up after sitting in the vehicle, especially suitable for carrying some pets with a relatively high body size, and being able to install and support the awning on the support structure to provide functions such as rain and sun protection for pets. In addition, when the folding frame is in the folded state, the first awning frame member can be folded by flipping outward relative to the third side frame member, and the second awning frame member can be folded by flipping outward relative to the fourth side frame member, thereby reducing the height of the occupied space and facilitating outdoor carrying and storage.

[0021] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present utility model, form a part of this application, and the schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0023] Figure 1 is a structural schematic diagram of a folding frame according to an embodiment of the present utility model Figure 1 。

[0024] Figure 2 is a partial structural schematic diagram of the folding frame in the unfolded state according to an embodiment of the present utility model.

[0025] Figure 3 is a structural schematic diagram of a first connection structure according to an embodiment of the present utility model

[0026] Figure 4 is a partial structural schematic diagram of the folding frame in the folded state according to an embodiment of the present utility model.

[0027] Figure 5 is an exploded view of a folding frame according to an embodiment of the present utility model.

[0028] Figure 6 is an exploded view of a locking assembly according to an embodiment of the present utility model.

[0029] Figure 7 is a structural schematic diagram of an armrest structure according to an embodiment of the present utility model.

[0030] Figure 8 is a structural schematic diagram of a folding frame according to an embodiment of the present utility model Figure 2。

[0031] Figure 9 The structural schematic diagram of the folding state of the folding frame according to an embodiment of the present utility model.

[0032] Figure 10 The structural schematic diagram of the folding vehicle according to an embodiment of the present utility model. Specific embodiments

[0033] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0034] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model.

[0035] In the present utility model, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0036] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "above" and "on the top" of the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below" and "under the bottom" of the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0037] Unless otherwise defined, the technical terms or scientific terms used herein shall have the ordinary meanings as understood by those of ordinary skill in the art to which the present utility model pertains. The terms "first", "second" and similar terms used in the description and claims of the present utility model patent application do not denote any order, quantity or importance, but are only used to distinguish different components. Similarly, terms such as "a" or "an" do not denote a quantity limitation, but mean that there is at least one.

[0038] It should be noted that the following will be elaborated with the third side frame member as the front of the folding bike and the plane where the armrest structure is located as the rear of the folding bike.

[0039] As Figure 1 shown, as an embodiment of the present utility model, a folding bike frame is provided, which includes a bike frame body 1 and a wheel assembly 2 for driving the movement of the bike frame body. The bike frame body includes a bottom frame structure 11, a first side frame structure 4 and a second side frame structure 5 respectively arranged on both sides of the bottom frame structure along the length direction of the bottom frame structure, and a third side frame structure 6 and a fourth side frame structure 7 respectively arranged on both sides of the bottom frame structure along the width direction of the bottom frame structure. The third side frame structure 6 includes a third side frame member 61 connected between one ends of the first and second side frame structures, and a first awning frame member 62 rotatably connected to the upper part of the third side frame member 61. The fourth side frame structure 7 includes a fourth side frame member 71 connected between the other ends of the first and second side frame structures, and a second awning frame member 72 rotatably connected to the upper part of the fourth side frame member 71. In the folding bike frame of this embodiment, by providing the first awning frame member 62 and the second awning frame member 72, when the folding bike frame is in the unfolded state, a support structure for installing and supporting an awning can be formed by the first awning frame member 62 and the second awning frame member 72, thereby greatly increasing the height of the pet placement space, making the activity space for pets in the vehicle higher, allowing large pets to stand up after sitting in the vehicle, especially suitable for carrying some pets with a relatively high body type, and an awning can be installed and supported on the support structure to provide functions such as rain and sun protection for pets. In addition, when the folding bike frame is in the folded state, the first awning frame member 62 can be folded by flipping outward relative to the third side frame member 61, and the second awning frame member 72 can be folded by flipping outward relative to the fourth side frame member 71, thereby reducing the occupied space height and facilitating outdoor carrying and storage.

[0040] As Figures 1-4As shown, in some specific embodiments, the first canopy frame member 62 and the third side frame member 61, and the second canopy frame member 72 and the fourth side frame member 71 are respectively connected by a first connection structure 8. The first connection structure 8 includes a connecting member 81 provided on the third side frame member 61 or the fourth side frame member 71, and a limiting member 82 connected to the connecting member. The connecting member 81 is rotatably connected to the first canopy frame member 62 or the second canopy frame member 72 through a first connecting shaft 723. On one side of the limiting member 82 away from the first and second side frame structures, a first limiting surface 821 is formed. Outside the first limiting surface 821, there is a rotation area for the end of the first canopy frame member 62 or the second canopy frame member 72 to flip around the first connecting shaft 723. In the unfolded state, the first limiting surface 821 abuts against the first abutting surface 721 formed on the first canopy frame member 62 or the second canopy frame member 72 for limiting. After the abutting limit, the support structure formed by the first canopy frame member 62 and the second canopy frame member 72 fixes the first and second canopy frame members, increases the structural stability, and enhances the wind resistance in the use state of covering with fabric.

[0041] In some specific embodiments, the angle between the first limiting surface 821 and the third side frame member 61 or the fourth side frame member 71 is greater than 180° and less than 270°, especially between 210° and 240°. This can not only ensure the structural stability during unfolding but also ensure the increase of the interior space of the vehicle. When unfolded, the first and second canopy frame members can form an angle with the bottom surface of the chassis structure 11, so that the whole vehicle presents a hexagonal structure in the use state of covering with fabric. After the whole vehicle is covered with fabric, the structural strength of the whole vehicle is increased and the wind resistance strength is increased.

[0042] As Figure 3 shown, in some specific embodiments, a second limiting surface 823 is further formed on one side of the limiting member 82 away from the first and second side frame structures. The second limiting surface 823 is arranged along the length direction of the third side frame member 61 or the fourth side frame member 71. As Figure 4 shown, in the folded state, the second limiting surface 823 abuts against the second abutting surface 722 formed on the first canopy frame member 62 or the second canopy frame member 72 for limiting, preventing the first canopy frame member 62 or the second canopy frame member 72 from leaning too far back when folding and overlapping and being stuck together with the chassis structure 11. The second abutting surface 722 and the first abutting surface 721 are oppositely arranged on both sides of the first connecting shaft 723.

[0043] As Figure 3As shown, in some specific embodiments, the second limiting surface 823 is arranged below the first limiting surface 821 and is connected to the first limiting surface 821 through a rotating surface 824. The rotating surface 824 is set as an arc surface coaxially arranged with the first connecting shaft 723. Compared with directly hollowing out according to the rotation range, the strength of the limiting member is increased, and the first and second awning frame members can be better supported. When the first awning frame member 62 or the second awning frame member 72 rotates around the axis of the first connecting shaft 723, its end can move between the arc surface and the first connecting shaft 723, making the rotation of the first and second awning frame members more labor-saving and easy.

[0044] As Figure 1 , 9 shown, in some specific embodiments, the third and fourth side frame members respectively include a first upright column 41 arranged at the end of the first side frame structure 4 and a second upright column 51 arranged at the end of the second side frame structure 5. The first and second awning frame members respectively include a first awning column 621 connected to the first upright column 41 through a first connecting structure 8, a second awning column 622 connected to the second upright column 51 through a first connecting structure 8, and an awning connecting rod 623 connected between the first awning column 621 and the second awning column 622. The limiting member 82 and the rotating area 822 are arranged between the first upright column 41 and the second upright column 51. In the folded state, the first and second awning frame members are arranged between the first upright column 41 and the second upright column 51, so that after folding, they can be completely received into the first upright column 41 and the second upright column 51 of the third and fourth side frame members without occupying space. In this embodiment, the first awning column 621 and the second awning column 622 and the awning connecting rod 623 form the first and second awning frame members of a U-shaped structure. The awning surface structure of the U-shaped structure is simple, and compared with the H-shaped structure, it has a larger contact surface with the cloth cover, provides more stable support for the cloth cover, and is less likely to wear the inside of the cloth cover. In the unfolded state, an access passage 9 is formed around the first upright column 41, the second upright column 51, the first awning column 621, the second awning column 622, the awning connecting rod 623, and the bottom frame structure. Looking from the front, the U-shaped awning and the rectangle formed by the first upright column 41 and the second upright column 51 together form a large rectangular access passage 9. And due to the additional interior space supported by the U-shaped awning frame, the size of the access passage 9 increases, and large pets can freely enter and exit.

[0045] As Figure 2As shown, in some specific embodiments, a connecting groove 811 is recessed from its bottom end on the connecting groove 811. The connecting groove 811 is sleeved on the first upright column 41 or the second upright column 51 and is fixedly connected to the first upright column 41 or the second upright column 51 relatively through a fastener. The outer surfaces of the first awning column 621 and the second awning column 622 are set as cylindrical surfaces, so that the cylinders of the first awning column 621 and the second awning column 622 can be arranged corresponding to the first limiting surface 821 which is set as an arc concave surface corresponding to the first awning column 621 or the second awning column 622, increasing the abutting area between the cylinder and the arc concave surface and enabling better abutting.

[0046] As Figure 1 shown, in some specific embodiments, the first and second side frame structures respectively include two sets of two cross bars 42 which are arranged crosswise and rotatably connected to each other. The two cross bars 42 are folded or unfolded by rotating relative to each other. The cross bars 42 are folded and unfolded through the upper cross bars on both sides. Compared with the fixed cross bar length of the traditional folding vehicle, it is necessary to fold and unfold by telescoping the length of the upright columns up and down. The upper cross bars on both sides are more convenient, and the first and second upright columns are not perpendicular to the bottom surface of the chassis structure 11. When in the use state after covering with a cloth cover, together with the first and second awning frame members, the whole vehicle forms a hexagonal frame, strengthening the structural stability of the whole vehicle. The included angles between the third and fourth side frame members and the chassis structure 11 are respectively greater than 90°, especially greater than 90° and less than or equal to 120°, making the interior space of the vehicle more in line with the body structure of pets such as dogs and more suitable for carrying pets. The chassis structure 11 includes at least two chassis members 111 arranged in sequence along its length direction. In this embodiment, two chassis members 111 are arranged. The adjacent two chassis members 111 are rotatably connected to each other. The adjacent two chassis members are folded or unfolded by rotating relative to each other. The rotation connection part between the adjacent two chassis members 111 is directly connected side by side by the support bars extending from the two chassis members 111 along the length direction and is connected by using fixing parts side by side, so that when rotating, the two adjacent chassis members 111 can be folded and unfolded synchronously. After the whole vehicle is covered with cloth, a bottom cloth can be covered above the chassis member 111, and a pull ring is arranged on the bottom cloth to form an integral body of the two adjacent chassis members 111. The pull ring can be used to fold and unfold together. Inside the chassis member, there are several support bars in the length direction to strengthen the load-bearing capacity of the folding vehicle. When in the unfolded state, the first awning frame member 62 and the second awning frame member 72 form a support structure for installing and supporting the awning. When in the folded state, the first awning frame member 62, the second awning frame member 72, and the chassis member 111 are stacked, so that the folded folding frame can be placed horizontally, and the stability of the placement state is better.

[0047] As Figure 8As shown, in some specific embodiments, an armrest structure 12 is installed on one side of the fourth side frame member 71 away from the third side frame member 61. The armrest structure 12 includes a third upright 13 and a fourth upright 14 arranged oppositely, and an armrest rod 121 whose two ends are respectively rotatably connected to the third upright 13 and the fourth upright 14 through a locking assembly 15. The locking assembly 15 is fixed by meshing. While pressing the rotation buttons 151 on the third upright 13 and the fourth upright 14 simultaneously, the engaging member is pushed into the engaging position to rotate the armrest rod. After rotating to the desired position, release the rotation button 151, and the spring in the locking assembly will bounce the rotation button back to its original position, facilitating the quick positioning after the armrest rod 121 is unfolded and the quick positioning after folding. The third and fourth uprights are respectively connected to the fourth side frame member 71 through a second connection structure 16. The second connection structure 16 includes a mounting member 161 fixedly connected to the fourth side frame member 71 and a connecting cylinder 162 connected to the side of the mounting member away from the third side frame member 61. The third upright 13 and the fourth upright 14 are respectively sleeved in the corresponding connecting cylinders 162 and are telescopically connected to the connecting cylinders 162. In the unfolded state, the third upright 13 and the fourth upright 14 are respectively positioned and connected to the connecting cylinders 162 through a positioning assembly 163, simply and efficiently coping with the hand-pushing height of people of various heights, and in the folded state, the armrest can be retracted to the lowest position, reducing the overall length of the folded frame and facilitating storage and carrying.

[0048] As Figure 9 and Figure 10As shown in the figure, as the second embodiment of the present utility model, a folding vehicle is further provided. The folding vehicle includes the folding vehicle frame of the first embodiment and a cloth cover structure 3 covering the first, second, third, and fourth side frame structures. The cloth cover structure 3 includes a door cloth member, which can be arranged on both the third side frame structure 6 and the fourth side frame structure 7, or can be arranged on one of the third side frame structure 6 and the fourth side frame structure 7. All or part of the structure of the door cloth member is detachably connected to the surrounding cloth cover through structures such as zippers, and is used to form a doorway corresponding to the access passage 9 for pets to get on and off the vehicle after being separated from the surrounding cloth cover. The cloth cover structure 3 further includes a perimeter cloth member wrapped around the bottom frame structure 11, the first side frame structure 4, and the second side frame structure 5, and a canopy cloth member wrapped between the upper parts of the perimeter cloth member and the two door cloth members. The canopy cloth member, the perimeter cloth member, and the two door cloth members are connected to each other to comprehensively cover the first, second, third, and fourth side frame structures. The canopy cloth member includes a canopy cloth member body and a canopy cloth member movable body. All or part of the structure of the canopy cloth member movable body is detachably connected to the canopy cloth member body through structures such as zippers, and is used to form a state without a canopy after being separated from the canopy cloth member body, which is suitable for use in some cases where rain and sun protection are not required, and is convenient for folding the whole vehicle. A first visible area 31 is provided on the cloth cover structure 3 and is arranged between the first side frame structure 4, the first canopy frame member 62, and the second canopy frame member 72. A second visible area 32 can be provided on the cloth cover structure and is arranged between the second side frame structure 5, the first canopy frame member 62, and the second canopy frame member 72. A third visible area 33 can be provided on the cloth cover structure and is arranged corresponding to the third side frame structure 6. A fourth visible area 34 can be provided on the cloth cover structure and is arranged corresponding to the fourth side frame structure 7. In this embodiment, the shape of each visible area is set as a trapezoidal structure, which is relatively wide and convenient for pets to observe the outside world in the vehicle. Each visible area is set as a mesh window structure, which has certain air permeability and can ensure the smooth breathing air of pets in the vehicle. In some other embodiments, all or part of the visible areas can also be set as other shape structures such as circles, parallelograms, squares, triangles, etc., and all or part of the visible areas can also be set as structures such as transparent plates and transparent plastic films, which can all be used for pets to observe the outside world in the vehicle.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them. Although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of the present utility model.

[0050] In summary, the above are only the preferred embodiments of the present utility model. All equivalent changes and modifications made according to the scope of the patent application of the present utility model shall fall within the scope covered by the patent of the present utility model.

Claims

1. A folding frame having a folded state and an unfolded state, characterized in that: The vehicle body comprises a frame body and a wheel assembly for driving the frame body to move, wherein the frame body comprises a bottom frame structure, a first side frame structure and a second side frame structure respectively arranged on both sides of the bottom frame structure along the length direction of the bottom frame structure, and a third side frame structure and a fourth side frame structure respectively arranged on both sides of the bottom frame structure along the width direction of the bottom frame structure. The third side frame structure includes a third side frame member connected between one ends of the first and second side frame structures, and a first canopy frame member rotatably connected to the upper part of the third side frame member. The fourth side frame structure includes a fourth side frame member connected between the other ends of the first and second side frame structures, and a second canopy frame member rotatably connected to the upper part of the fourth side frame member. In the unfolded state, the first canopy frame member and the second canopy frame member form a supporting structure for installing and supporting the canopy. In the folded state, the first canopy frame member is folded by turning outward relative to the third side frame member, and the second canopy frame member is folded by turning outward relative to the fourth side frame member.

2. The folding frame according to claim 1, characterized in that: The first canopy frame member and the third side frame member, and the second canopy frame member and the fourth side frame member are respectively connected through a first connecting structure, the first connecting structure includes a connecting member arranged on the third side frame member or the fourth side frame member, and a limiting member connected to the connecting member, the connecting member is rotatably connected to the first canopy frame member or the second canopy frame member through a first connecting axis, a first limiting surface is formed on the side of the limiting member away from the first and second side frame structures, and a rotating area is provided outside the first limiting surface for the end of the first canopy frame member or the second canopy frame member to flip around the first connecting axis, and in the unfolded state, the first limiting surface abuts against a first abutting surface formed on the first canopy frame member or the second canopy frame member for limiting.

3. The folding frame according to claim 2, characterized in that: The included angle between the first limiting surface and the third side frame member or the fourth side frame member is greater than 180° and less than 270°.

4. The folding frame according to claim 2, characterized in that: A second limiting surface is also formed on the side of the limiting member away from the first and second side frame structures, and the second limiting surface is arranged along the length direction of the third side frame member or the fourth side frame member. In the folded state, the second limiting surface abuts against a second abutting surface formed on the first canopy frame member or the second canopy frame member for limiting. The second abutting surface is arranged opposite to the first abutting surface on both sides of the first connecting axis.

5. The folding frame according to claim 4, characterized in that: The second limiting surface is arranged below the first limiting surface and is connected to the first limiting surface via a rotating surface. The rotating surface is set to be an arc surface coaxially arranged with the first connecting shaft. When the first canopy frame member or the second canopy frame member rotates around the axis of the first connecting shaft, its end can move between the arc surface and the first connecting shaft.

6. The folding frame according to any one of claims 2 to 5, characterized in that: The third and fourth side frame members respectively include a first column arranged at the end of the first side frame structure, and a second column arranged at the end of the second side frame structure. The first and second canopy frame members respectively include a first canopy column connected to the first column through a first connecting structure, a second canopy column connected to the second column through a first connecting structure, and a canopy connecting rod connected between the first canopy column and the second canopy column. The limit member and the rotation area are arranged between the first column and the second column. In the folded state, the first and second canopy frame members are arranged between the first column and the second column. In the unfolded state, an entry and exit channel is formed around the first column, the second column, the first canopy column, the second canopy column, the canopy connecting rod, and the base frame structure.

7. The folding frame according to claim 6, characterized in that: The connecting member is provided with a connecting groove recessed from its bottom end, the connecting groove is sleeved on the first column or the second column, and is relatively fixedly connected to the first column or the second column through a fastener, the outer surfaces of the first canopy column and the second canopy column are arranged as cylindrical surfaces, and the first limiting surface is arranged as an arc concave surface corresponding to the first canopy column or the second canopy column.

8. The folding frame according to claim 6, characterized in that: The first and second side frame structures respectively include at least one set of two cross bars arranged crosswise and rotatably connected to each other, and the two cross bars can be folded or unfolded by rotating relative to each other; The chassis structure comprises at least two chassis members arranged in sequence along the length direction thereof, two adjacent chassis members are rotatably connected, and the two adjacent chassis members can be folded or unfolded by rotating relative to each other; In the unfolded state, the first canopy frame member and the second canopy frame member form a supporting structure for installing and supporting the canopy. In the folded state, the first canopy frame member, the second canopy frame member and the bottom frame member are stacked.

9. The folding frame according to claim 6, characterized in that: A handrail structure is installed on the side of the fourth side frame member away from the third side frame member, and the handrail structure includes a third column and a fourth column arranged opposite to each other, and a handrail rod whose two ends are rotatably connected to the third column and the fourth column through locking assemblies respectively; The third and fourth columns are respectively connected to the fourth side frame member through a second connecting structure, the second connecting structure includes a mounting member fixedly connected to the fourth side frame member, and a connecting tube connected to the mounting member on a side away from the third side frame member, the third column and the fourth column are respectively sleeved in the corresponding connecting tubes and telescopically connected to the connecting tubes, and in the expanded state, the third column and the fourth column are respectively positioned and connected to the connecting tubes through positioning components.

10. A folding bicycle, characterized in that: It comprises a folding frame as claimed in any one of claims 1 to 9, and a cloth cover structure covering the first, second, third and fourth side frame structures; The cloth cover structure includes door cloth pieces arranged corresponding to the third side frame structure and / or the fourth side frame structure; The cloth cover structure is provided with a first visible area arranged between the first side frame structure, the first canopy frame member, and the second canopy frame member, and / or the cloth cover structure is provided with a second visible area arranged between the second side frame structure, the first canopy frame member, and the second canopy frame member, and / or the cloth cover structure is provided with a third visible area arranged corresponding to the third side frame structure, and / or the cloth cover structure is provided with a fourth visible area arranged corresponding to the fourth side frame structure.

Images