Folding bicycle

Abstract

The utility model discloses a folding bicycle, which relates to the technical field of folding tools and comprises a base, a caster component and a frame structure. The trundle assembly comprises a pair of first trundles arranged on the base. The frame structure comprises a frame body arranged on the base and a transmission assembly connected between the first trundles and the frame body in a transmission mode. The frame body has an unfolded state and a folded state, and the two first trundles have first positions which are relatively far away from each other and second positions which are relatively close to each other; in the process that the frame body is switched from the unfolded state to the folded state, the frame body drives the two first trundles to be switched from the first position to the second position through the transmission assembly. The rear wheels can move towards the inner side of the base through folding of the frame structure, when the rear wheels are folded subsequently, the same storage step as the front wheels can be achieved, and folding of the rear wheels is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to foldable tool technical field, especially a folding bicycle. BACKGROUND

[0002] In prior art, for the folding bicycle with the front wheel and the rear wheel not being set equally, the rear wheel is relatively closer to the outside of the base, when the folding bicycle is folding, the rear wheel needs to be moved to the inside of the base, so as to fold the rear wheel towards the base, the folding of the bicycle frame cannot be linked with the caster, after the folding of the bicycle frame, the rear wheel has an additional folding step towards the inside of the base compared with the front wheel, the rear wheel cannot be stored in the base by the same folding step as the front wheel, the operation is troublesome, and the folding bicycle cannot be folded to the minimum. SUMMARY

[0003] The utility model discloses a folding bicycle, which can realize linkage between folding of the bicycle frame and storage of the rear wheel, and facilitate storage of the rear wheel and the front wheel in the base by the same step.

[0004] To achieve the above object, the utility model provides a folding bicycle, which comprises:

[0005] a base;

[0006] a caster assembly comprising a pair of first casters arranged on the base;

[0007] a frame structure comprising a frame body arranged on the base and a transmission assembly connected between the first casters and the frame body;

[0008] the frame body has an unfolded state and a folded state, and the two first casters have a first position relatively far away and a second position relatively close;

[0009] during switching of the frame body from the unfolded state to the folded state, the frame body drives the two first casters to switch from the first position to the second position through the transmission assembly.

[0010] In an embodiment, the frame body is arranged above the base and is folded towards the base during switching from the unfolded state to the folded state.

[0011] the transmission assembly comprises a transmission member movably arranged below the base and an intermediate link, and the intermediate link is respectively connected with the transmission member and the frame body;

[0012] during switching of the frame structure from the unfolded state to the folded state, the frame body drives the transmission member to move through the intermediate link, and the transmission member is connected with the first casters to drive the first casters to move towards the second position.

[0013] In an embodiment, the transmission assembly further comprises two swing members and two second sliding members, the second sliding members are respectively connected with the corresponding first casters and are slidingly arranged on the base along the moving direction of the first casters;

[0014] The swing members are rotatably installed on the base through first rotating portions, and the swing members have first movable portions rotatably connected with the transmission members and second movable portions rotatably connected with the second sliding members;

[0015] The transmission members are slidingly arranged on the base and are used to drive the swing members to rotate around the first rotating portions when sliding, so that the swing members drive the second sliding members to slide.

[0016] In an embodiment, the first movable portions comprise first waist-shaped holes arranged on the swing members, the second movable portions comprise second waist-shaped holes arranged on the swing members, the transmission members are relatively slidable along the first waist-shaped holes, and the second sliding members are relatively slidable along the second waist-shaped holes.

[0017] In an embodiment, when the two first casters are in the first position, the two first casters are relatively located outside the outer contour of the base, and when the two first casters are in the second position, the two first casters are relatively located inside the outer contour of the base.

[0018] The first casters are rotatably installed on the second sliding members along the circumferential direction of the second sliding members, and when the two first casters are in the second position, the first casters can be rotated towards the direction of approaching the base, so that the first casters have a first storage state of being stacked on the bottom of the base.

[0019] In an embodiment, the bottom of the base is provided with a first accommodating groove, and the first casters can be stored in the first accommodating groove when in the first storage state.

[0020] The first accommodating groove is concavely arranged on the bottom of the base and is matched with the first casters, and after the first casters are stored in the first accommodating groove, the first casters do not protrude out of the bottom away from the lower surface of the frame.

[0021] In an embodiment, the frame comprises a push rod and a seat frame, the push rod and the seat frame are rotatably installed on the base, and during the process of switching the frame structure from the unfolded state to the folded state, the push rod and the seat frame approach the base;

[0022] The seat frame is engaged with the intermediate connecting rod, so that when the seat frame approaches the base, the intermediate connecting rod drives the transmission members to move;

[0023] And / or, the push rod is engaged with the intermediate link to drive the transmission member to move through the intermediate link when the push rod is moved towards the base.

[0024] In an embodiment, the frame further comprises a linkage folding assembly engaged with the push rod and the seat frame respectively to link the push rod and the seat frame when folding;

[0025] The linkage folding assembly comprises a first sliding member slidingly arranged on the seat frame and a second link rotatably connected with the first sliding member, the second link being rotatably mounted on the push rod;

[0026] The linkage folding assembly further comprises a first link, one end of the first link being rotatably connected with the base, the other end of the first link being rotatably connected with the first sliding member;

[0027] The first sliding member is configured to drive the intermediate link to move when the seat frame is moved;

[0028] The intermediate link is rotatably connected with the first link, and the first sliding member drives the intermediate link to move through the first link.

[0029] In an embodiment, the seat frame comprises a pair of seat rods, and the first sliding member comprises a sleeve arranged on each of the pair of seat rods and a sliding connecting rod connected between the pair of sleeves;

[0030] The seat frame further comprises a base connecting rod connecting the seat rods with the base, the base connecting rod being rotatably mounted on the base along a first rotation axis, the first rotation axis extending in a first direction;

[0031] The seat rods are rotatably mounted on the base connecting rod along a second rotation axis, the second rotation axis extending in a direction perpendicular to the first rotation axis, so that the two seat rods can be moved towards each other or away from each other;

[0032] During the switching of the frame structure from the unfolded state to the folded state, the two seat rods are folded towards each other.

[0033] In an embodiment, when the frame structure is in the folded state, the seat rods and the push rod are all stacked on the base, and the seat rods are located on the inner side of the push rod, and the seat rods and the push rod are located on the same plane away from the base.

[0034] In one embodiment, the caster assembly further includes a second caster, the second caster being spaced apart from the first caster along a second direction, the second caster being movably disposed on the base, the second caster having a second storage state stacked on the bottom of the base, and a second walking state for the folding vehicle to walk, wherein the first direction and the second direction are arranged to intersect;

[0035] The bottom of the base is further provided with a second accommodating groove, and the second accommodating groove is used to accommodate the second caster in the second storage state.

[0036] In one embodiment, the push rod includes multiple telescopically connected push rod sections, and a handle is provided at one end of the push rod away from the base. When the frame is in a folded state, the handle is close to the base and located within the outer contour of the base.

[0037] In one embodiment, the folding vehicle is configured as a baby vehicle.

[0038] The technical solution of the present invention is to provide a frame structure on the base, connect the first caster through the frame structure, and enable the frame structure to have an expanded state and a folded state, and enable the two first casters to have a first position away from each other and a second position close to each other. When the frame structure switches from the expanded state to the folded state, it can drive the two first casters to move away from each other and switch from the first position to the second position, so that the frame structure of the folding bicycle can be linked with the first caster when folded. When the folding bicycle is configured as a children's bicycle and the first caster is configured as a rear wheel, the rear wheel can be moved toward the inside of the base through the folding of the frame structure, so that when the rear wheel is subsequently folded, the same storage steps as the front wheel can be implemented, which is convenient for folding the rear wheel, thereby enabling the folding of the folding bicycle to achieve a minimal folding operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0040] Figure 1 This is a structural schematic diagram of an embodiment of the folding bicycle provided by the utility model in the unfolded state;

[0041] Figure 2 for Figure 1 Schematic diagram of the middle frame in the unfolded state;

[0042] Figure 3 for Figure 1The folding process state schematic view of the middle frame body;

[0043] Figure 4 The folding process state schematic view of the middle frame body; Figure 1 The folding process state schematic view of the middle frame body;

[0044] Figure 5 The folding process state schematic view of the middle frame body; Figure 4 The folding process state schematic view of the middle frame body;

[0045] Figure 6 The folding process state schematic view of the middle frame body; Figure 1 The folding process state schematic view of the middle frame body;

[0046] Figure 7 The folding process state schematic view of the middle frame body; Figure 6 The folding process state schematic view of the middle frame body;

[0047] Figure 8 The folding process state schematic view of the middle frame body; Figure 6 The folding process state schematic view of the middle frame body;

[0048] Figure 9 The folding process state schematic view of the middle frame body; Figure 6 The folding process state schematic view of the middle frame body;

[0049] Figure 10 The folding process state schematic view of the middle frame body; Figure 6 The folding process state schematic view of the middle frame body;

[0050] Figure 11 The folding process state schematic view of the middle frame body; Figure 1 The folding process state schematic view of the middle frame body;

[0051] Figure 12 The folding process state schematic view of the middle frame body; Figure 7 The folding process state schematic view of the middle frame body;

[0052] Figure 13 The folding process state schematic view of the middle frame body.

[0053] Explanation of the drawing reference numerals:

[0054] 100, folding bicycle; 10, base; 11, first accommodating groove; 12, second accommodating groove; 20, caster assembly; 21, second caster; 22, first caster; 30, frame structure; 31, frame body; 311, push rod; 311a, handle; 312, seat frame; 3121, seat rod; 3122, base connecting rod; 313, first sliding piece; 313a, long hole; 314, first connecting rod; 315, second connecting rod; 316, transmission rod; 317, transmission structure; 32, transmission assembly; 321, transmission piece; 322, swing piece; 322a, first rotating part; 322b, first movable part; 322c, second movable part; 323, second sliding piece; 33, middle connecting rod; 34, first connecting rod.

[0055] The purposes, functional features and advantages of the utility model will be further explained in combination with embodiments and with reference to the drawings. DETAILED DESCRIPTION

[0056] The technical solutions in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work belong to the scope of protection of the utility model.

[0057] It should be noted that if the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0058] In addition, if the embodiments of the utility model involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, "and / or" or "and / or" appearing throughout the text means that the three parallel solutions are included, for example, "A and / or B" includes A solution, or B solution, or A and B solutions. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0059] In the prior art, for the child car, the front wheel and the rear wheel are not set equally, the rear wheel is closer to the outer side of the base, when the folding car is folded, the rear wheel needs to be moved to the inner side of the base, so that the folding of the rear wheel towards the base can be realized, the folding of the folding car frame cannot be linked with the caster, after the folding of the frame, the rear wheel has an additional step of folding towards the inner side of the base relative to the front wheel, and cannot be stored in the base by using the same folding step of the front wheel, which is troublesome and cannot make the folding car realize the minimization of folding.

[0060] The utility model provides a kind of folding car. It aims at improving the above technical problems, so that folding car can realize the linkage of frame folding and rear wheel, facilitate rear wheel and front wheel to be stored in base by using the same step, realize the minimization of folding car folding.

[0061] In the utility model, the folding vehicle can be configured as a child vehicle, a shopping cart, a beach camping vehicle or the like, and is not specifically limited herein. The following will take the folding vehicle configured as a child vehicle as an example for description.

[0062] Please refer to Figures 1 to 13 In an embodiment of the utility model, the folding vehicle 100 comprises a base 10, a caster assembly 20 and a vehicle frame structure 30; the caster assembly 20 comprises a pair of first casters 22 arranged on the base 10, and the vehicle frame structure 30 comprises a frame body 31 arranged on the base 10 and a transmission assembly 32 transmissionally connected between the first casters 22 and the frame body 31.

[0063] The frame body 31 has an unfolded state and a folded state, and the two first casters 22 have a first position relatively far away and a second position relatively close to each other.

[0064] In the process of switching the frame body 31 from the unfolded state to the folded state, the frame body 31 drives the two first casters 22 to switch from the first position to the second position through the transmission assembly 32.

[0065] In the embodiment of the utility model, the vehicle frame structure 30 can be provided as the frame body 31 and the transmission assembly 32, as shown in Figure 1 、 Figure 6 、 Figure 11 The vehicle frame structure 30 comprises the frame body 31 and the transmission assembly 32, and is folded towards the base 10 in the process of switching from the unfolded state to the folded state. The frame body 31 is arranged above the base 10 and can serve as the main skeleton structure of the folding vehicle 100 for containing articles. When the utility model is configured as a child vehicle, the frame body 31 can accommodate a seat for children to lie or sit when unfolded. The seat can be made of materials, for example, Oxford cloth as the outer material and the inner layer can be made of face quality, which can improve the comfort of children lying or sitting, and the seat made of flexible material can be easily folded and stored together with the folding vehicle 100 after the folding vehicle 100 is folded and stored. The frame body 31 can comprise at least four foldable rod-shaped members, which form a placing space for placing the seat when the frame body 31 is unfolded. The four foldable rod-shaped members can be connected through a transmission structure, and when one of the four foldable rod-shaped members is folded towards the base 10, the remaining three foldable rod-shaped members can be driven to fold towards the base 10, thereby achieving the folding of the frame body 31.

[0066] Two of the four foldable rod-shaped members can be configured as push rods 311, which can be used to support the folding vehicle 100 and facilitate the movement of the folding vehicle 100. The push rods 311 can be arranged near the rear of the moving direction of the base 10, that is, near the side of the base 10 where the first casters 22 are arranged. The other two foldable rod-shaped members can be arranged near the front of the moving direction of the base 10 and at an angle with the push rods 311 when unfolded. In this way, when the four foldable rod-shaped members enclose a containing space to place the seat, the volume of the containing space can be increased, and the stability of the four foldable rod-shaped members supporting the seat can be improved.

[0067] In the utility model, the second caster 21 can be arranged as the front caster of the folding vehicle 100 and located in front of the walking direction of the folding vehicle 100. The second caster 21 can be arranged as two, one, or three. The first caster 22 can be arranged as the rear caster of the folding vehicle 100 and located in the rear of the walking direction of the folding vehicle 100. The first caster 22 can be arranged as two. When the folding vehicle 100 is unfolded, the first caster 22 is relatively closer to the center of gravity of the folding vehicle 100. When the first caster 22 is in the first position, the first caster 22 is arranged closer to the outer side of the base 10 relative to the second caster 21. When the folding vehicle 100 is unfolded, the multiple casters of the folding vehicle 100 are sequentially connected and arranged in a trapezoidal or triangular shape, which can improve the load bearing and stability of the folding vehicle 100.

[0068] The transmission assembly 32 is arranged below the base 10 and connected with the frame body 31 and the first caster 22. The transmission assembly 32 can be configured as a power transmission structure. When the frame body 31 is folded and stored towards the base 10 or unfolded relative to the base 10, the parts of the frame body 31 will move. When the transmission assembly 32 is connected with the parts of the frame body 31, the movement of the transmission assembly 32 will be driven by the movement of the parts of the frame body 31. The transmission assembly 32 is connected with the first caster 22, so that the two first casters 22 can be moved when the frame body 31 moves, and the linkage between the frame body 31 and the first caster 22 can be realized when the folding vehicle 100 is folded.

[0069] The transmission assembly 32 can be configured as a sliding block structure. The sliding block structure can include a first sliding block, a second sliding block, and a guide rod. The first sliding block can move along the direction connecting the two first casters 22, and the second sliding block can move along the front-back direction of the base 10. The two sliding blocks are movably connected by the guide rod. The second sliding block is connected with the frame body 31. When the second sliding block is driven to move by the frame body 31, the power can be transmitted to the first sliding block through the guide rod to drive the first sliding block to move, so that the two first casters 22 can move along the direction of approaching or moving away from each other.

[0070] The technical scheme of the utility model discloses a frame structure 30 is arranged on the base 10, the first trundle 22 is drivenly connected through the frame structure 30, and the frame structure 30 has an unfolded state and a folded state, and the two first trundles 22 have a first position of being away from each other and a second position of being close to each other, when the frame structure 30 is switched from the unfolded state to the folded state, the two first trundles 22 can be driven to move away from each other, and the first position is switched to the second position, so that the frame structure 30 of the folding bicycle 100 can be linked with the first trundle 22 when folding, when the folding bicycle 100 is configured as a child bicycle, and the first trundle 22 is configured as a rear wheel, the rear wheel can be moved to the inner side of the base 10 through the folding of the frame structure 30, so that the rear wheel can be folded, and the folding bicycle 100 can be folded to realize the minimum folding operation.

[0071] The transmission assembly 32 will be introduced below.

[0072] Referring to Figure 6 、 Figure 7 、 Figure 11 In an embodiment, the transmission assembly 32 includes a transmission member 321 movably arranged below the base 10 and an intermediate link 33, and the intermediate link 33 is respectively engaged with the transmission member 321 and the frame body 31.

[0073] During the switching of the frame structure 30 from the unfolded state to the folded state, the frame body 31 drives the transmission member 321 to move through the intermediate link 33, and the transmission member 321 is engaged with the first trundle 22 to drive the first trundle 22 to move towards the second position.

[0074] In the above embodiment, when the frame body 31 drives the intermediate link 33 to move, one end of the intermediate link 33 moves with the frame body 31, and the other end of the intermediate link 33 is driven to move, and the movement of the other end of the intermediate link 33 can drive the transmission member 321 of the transmission assembly 32 to move, so that the two first trundles 22 move towards the second position of being close to each other or the first position of being away from each other, thereby switching the two first trundles 22 between the first position and the second position.

[0075] In the utility model, the through slot is arranged on the base 10, and the middle connecting rod 33 is arranged to pass through the upper side of the base 10 to the lower side of the base 10, when the middle connecting rod 33 is connected with the frame body 31, the transmission rod 316 is arranged to connect two first connecting rods 314, the transmission structure 317 is movably arranged on the transmission rod 316 and connected with the middle connecting rod 33, when the frame body 31 is folded towards the base 10, the part of the transmission structure 317 and the middle connecting rod 33 is articulatedly connected moves downwards and moves towards the direction of the folding vehicle 100, so that the middle connecting rod 33 can be driven to move towards the direction of the base 10, and the transmission assembly 32 is driven to move towards the direction of the folding vehicle 100, in this way, the transmission assembly 32 can be arranged to include a transmission reversing structure, the movement of the transmission assembly 32 along the front-back direction of the vehicle body is converted into the movement of the first trundle 22 along the left-right direction of the vehicle body, when the frame body 31 is folded, the two first trundles 22 are switched from the first position to the second position.

[0076] Referring to Figure 6 、 Figure 7 As shown in the figure, in an embodiment, the transmission assembly 32 further includes two swing members 322 and two second sliding members 323, the second sliding member 323 is connected with the corresponding first trundle 22 and is slidably arranged on the base 10 along the moving direction of the first trundle 22;

[0077] The swing member 322 is rotatably installed on the base 10 through a first rotating part 322a, the swing member 322 has a first movable part 322b rotatably connected with the transmission member 321 and a second movable part 322c rotatably connected with the second sliding member 323;

[0078] The transmission member 321 is slidably arranged on the base 10 and is used to drive the swing member 322 to rotate around the first rotating part 322a when sliding, so that the swing member 322 drives the second sliding member 323 to slide.

[0079] A first limiting groove and two second limiting grooves can be provided at the bottom of the base 10. The first limiting groove extends along the front-to-back direction of the base 10, and the two second limiting grooves extend along the left-to-right direction of the base 10. A transmission member 321 is slidably mounted in the first limiting groove, and two second sliding members 323 are slidably mounted in the two second limiting grooves, respectively. The swinging member 322 can be rotatably mounted on the bottom of the base 10 via a first rotating portion 322a. When the transmission member 321 slides along the front-to-back direction of the base 10, the force of the transmission member 321 moving in the front-to-back direction of the base 10 can be transmitted to the swinging member 322, driving the swinging member 322 to swing about the first rotating portion 322a. When the swinging member 322 swings, the force exerted by the swinging member 322 on the second sliding member 323 can be decomposed into a driving force along the left-to-right direction of the base 10, thereby driving the second sliding member 323 to move in the left-to-right direction of the base 10, thereby driving the first caster 22 to move toward the inside of the base 10.

[0080] In the above embodiment, the swinging member 322 includes a first movable portion 322b rotatably connected to the transmission member 321 and a second movable portion 322c rotatably connected to the second sliding member 323. This means that when the transmission member 321 drives the swinging member 322 to rotate along the first rotating portion 322a, the first movable portion 322b has sufficient space for movement at the end of the transmission member 321 connected to the swinging member 322. When the swinging member 322 swings and drives the second sliding member 323 to move in the left-right direction of the base 10, the second movable portion 322c has sufficient space for movement at the end of the second sliding member 323 connected to the swinging member 322. This prevents interference between the transmission member 321 and the swinging member 322, and also prevents interference between the swinging member 322 and the second sliding member 323, during movement of the transmission member 321.

[0081] Of course, in other embodiments, the swinging member 322 may be configured such that one end is rotatably connected to the transmission member 321 and the other end is rotatably connected to the second sliding member 323, with no connection being provided between the swinging member 322 and the base 10. In this manner, the movement of the transmission member 321 along the front-to-back direction of the base 10 can also drive the second sliding member 323 to move along the left-to-right direction of the base 10.

[0082] The following is a detailed introduction to the arrangement of the swing member 322 .

[0083] See Figure 6 、 Figure 7 、 Figure 12As shown, the first movable part 322b comprises a first waist-shaped hole arranged on the swing member 322, the second movable part 322c comprises a second waist-shaped hole arranged on the swing member 322, the transmission member 321 and the swing member 322 can slide relative to each other along the first waist-shaped hole, and the second sliding member 323 and the swing member 322 can slide relative to each other along the second waist-shaped hole.

[0084] In the embodiment of the utility model, one end of the transmission member 321 and the swing member 322 can be provided with a first connecting shaft, the first connecting shaft is slidably inserted into the first waist-shaped hole, one end of the second sliding member 323 and the swing member 322 can be provided with a second connecting shaft, and the second connecting shaft is slidably inserted into the second waist-shaped hole. When the transmission member 321 moves along the front-back direction of the base 10 and drives the swing member 322 to swing, the first connecting shaft can rotate in the first waist-shaped hole, and the first connecting shaft can slide in the first waist-shaped hole, so that the transmission member 321 has sufficient movement space on the swing member 322, and interference between the transmission member 321 and the swing member 322 is avoided. When the swing member 322 swings and drives the second sliding member 323 to slide along the left-right direction of the base 10, the second connecting shaft slides in the second waist-shaped hole, and the second connecting shaft can rotate in the second waist-shaped hole, so that the second sliding member 323 has sufficient movement space on the swing member 322, and interference between the swing member 322 and the second sliding member 323 is avoided, and the movement of the second sliding member 323 along the left-right direction of the base 10 is not affected.

[0085] When the frame body 31 is folded on the base 10, in order to realize smaller volume of the folding vehicle 100 after folding, the caster assembly 20 can also be provided as a foldable structure. Referring to Figure 6 、 Figure 7 、 Figure 8 As shown, optionally, when the two first casters 22 are in the first position, the two first casters 22 are located outside the outer contour of the base 10 relative to each other, and when the two first casters 22 are in the second position, the two first casters 22 are located inside the outer contour of the base 10 relative to each other.

[0086] The first caster 22 is rotatably installed on the second sliding member 323 along the circumference of the second sliding member 323, and when the two first casters 22 are in the second position, the first caster 22 can rotate towards the base 10 to make the first caster 22 have a first storage state of being stacked on the bottom of the base 10.

[0087] In this way, the caster assembly 20 located below the base 10 can also realize the folding function, when the frame body 31 is folded above the base 10, the first casters 22 are in the second position, and the two first casters 22 are located inside the outer contour of the base 10, the first casters 22 can be folded towards the base 10 by rotating around the outer periphery of the second sliding member 323, so that the first casters 22 are folded below the base 10, so that the folding vehicle 100 is in a plate-shaped design after folding, thereby realizing the minimization of the folding setting, and can be placed vertically, which helps to reduce the space occupied by the folding vehicle 100 after folding.

[0088] When the caster assembly 20 of the utility model further comprises a second caster 21, continuing to refer to Figure 6 、 Figure 7 、 Figure 8 In an embodiment, the second caster 21 and the first caster 22 are arranged in a second direction, the second caster 21 is movably arranged on the base 10, the second caster 21 has a second storage state of being stacked on the bottom of the base 10 and a second walking state for walking of the folding vehicle, and the first direction and the second direction are arranged to intersect.

[0089] The second direction can be the front-back direction of the base 10, that is, the forward direction of the folding vehicle 100, the second caster 21 can be arranged in front of the walking direction of the folding vehicle 100, and the number of the second casters 21 can be one or two or the like. The second caster 21 is movably arranged on the base 10, that is, the second caster 21 can rotate as a whole relative to the base 10, and can be folded towards the bottom of the base 10. In this way, in the case that the folding vehicle 100 comprises the second caster 21, the folding vehicle 100 is in a plate-shaped design after folding, thereby realizing the minimization of the folding setting, and can be placed vertically, which helps to reduce the space occupied by the folding vehicle 100 after folding.

[0090] The specific folding mode of the second caster 21 and the first caster 22 will be introduced below.

[0091] In the utility model, because the second caster 21 and the first caster 22 can be located on the front side and the rear side of the base 10 during use, in order to enable the second caster 21 and the first caster 22 to be folded towards the base 10 during folding, and enable the two groups of casters to be folded in a plane on the base 10, optionally, the second caster 21 is provided with two second casters 21, the two second casters 21 are arranged oppositely, the second caster 21 and the base 10 are connected through a first movable structure, the first movable structure can move on the bottom of the base 10 to drive the second caster 21 to rotate relative to the base 10, and the second caster 21 can swing relative to the first movable structure.

[0092] In the above embodiment, when the first movable structure drives the second caster 21 to make a rotating movement relative to the base 10, the first movable structure can also be provided with a damping and limiting structure to limit the second caster 21 at a first rotating position and a second rotating position. The first rotating position can be a position on the left and right sides of the base 10, and the second rotating position can be a position on the front and rear sides of the base 10. When the folding vehicle 100 is unfolded and moves through the second caster 21, the second caster 21 can be located at the first rotating position. When the folding vehicle 100 is folded and the second caster 21 is folded and stored, the second caster 21 is located at the second rotating position. When the second caster 21 is located at the second rotating position, the second caster 21 can be folded towards the inner side of the base 10 relative to the first movable structure, and the wheel surface of the second caster 21 can be folded towards the base 10, so that the second caster 21 is folded and stored on the base 10, preventing the second caster 21 from being exposed outside the base 10 after folding.

[0093] In the present application, the first caster 22 can adopt the same folding mode as the second caster 21. The second movable structure for connecting the first caster 22 can connect the first caster 22 and the second sliding member 323, and realize the rotation of the first caster 22 relative to the base 10 through the second sliding member 323, and realize the folding of the first caster 22 through the swinging movement of the first caster 22 relative to the second sliding member 323. The specific setting is not described here.

[0094] When the caster assembly 20 is folded towards the base 10, in order to make the bottom of the base 10 as a whole flat after folding, as shown in Figure 8 、 Figure 9 、 Figure 11 , the bottom of the base 10 is provided with a first accommodating groove 11, and the first caster 22 can be accommodated in the first accommodating groove 11 when it is in the first storage state.

[0095] The first accommodating groove 11 is recessed in the bottom of the base 10 and is matched with the first caster 22. After the first caster 22 is accommodated in the first accommodating groove 11, the first caster 22 does not protrude out of the bottom of the base 10 away from the lower surface of the frame 31.

[0096] In addition, the bottom of the base 10 is also provided with a second accommodating groove 12 for accommodating the second caster 21 in the second storage state.

[0097] In this way, by arranging the first accommodating grooves 11 and the second accommodating grooves 12 on the bottom of the base 10, the number and positions of the first accommodating grooves 11 and the second accommodating grooves 12 can be arranged corresponding to the first casters 22 and the second casters 21. When the second casters 21 and the first casters 22 are folded towards the base 10, the first casters 22 can be accommodated in the corresponding first accommodating grooves 11, the second casters 21 can be accommodated in the corresponding second accommodating grooves 12, and the side of the first casters 22 away from the base 10 does not protrude from the first accommodating grooves 11, and the side of the second casters 21 away from the base 10 does not protrude from the second accommodating grooves 12, so that after the folding of the folding vehicle 100, the bottom of the base 10 is located at least in the same plane, which can make the folding vehicle 100 more integrated.

[0098] The structure of the frame body 31 will be further described below.

[0099] Referring to FIGS. 1-3, Figure 2 , Figure 3 , Figure 4 In an embodiment, the frame body 31 includes a push rod 311 and a seat frame 312, the push rod 311 and the seat frame 312 are rotatably installed on the base 10, and during the process of switching the frame structure 30 from the unfolded state to the folded state, the push rod 311 and the seat frame 312 are moved towards the base 10.

[0100] The seat frame 312 is connected with the intermediate connecting rod 33, so that when the seat frame 312 is moved towards the base 10, the intermediate connecting rod 33 drives the transmission member 321 to move.

[0101] And / or, the push rod 311 is connected with the intermediate connecting rod 33, so that when the push rod 311 is moved towards the base 10, the intermediate connecting rod 33 drives the transmission member 321 to move.

[0102] In the above embodiment, the push rod 311 and the seat frame 312 can be connected through a linkage folding assembly, when the frame structure 30 is folded, the push rod 311 is moved towards the base 10, and the seat frame 312 can be driven by the corresponding linkage folding assembly to move towards the base 10 together with the push rod 311, and when the frame structure 30 is unfolded, the push rod 311 is unfolded away from the base 10, and the seat frame 312 can be driven by the corresponding linkage folding assembly to unfold together with the push rod 311.

[0103] And the middle connecting rod 33 connecting the transmission member 321 can be connected with the seat frame 312, when the seat frame 312 is driven to move, the middle connecting rod 33 is driven to move to drive the transmission member 321 to move, so as to drive the two first wheels 22 to move close to each other or move away from each other, or the middle connecting rod 33 can also be connected with the push rod 311, the middle connecting rod 33 is directly driven to move through the movement of the push rod 311, or the middle connecting rod 33 can also be connected with the push rod 311 and the seat frame 312 at the same time, the middle connecting rod 33 is driven to move through the push rod 311 and the seat frame 312, which is not limited here.

[0104] The linkage folding assembly connecting the push rod 311 and the seat frame 312 will be introduced below, please continue to refer to Figure 2 、 Figure 3 、 Figure 4 In an embodiment, the frame body 31 further comprises a linkage folding assembly, the linkage folding assembly is engaged with the push rod 311 and the seat frame 312 respectively to drive the push rod 311 and the seat frame 312 to move in linkage when folding;

[0105] The linkage folding assembly comprises a first sliding member 313 slidingly arranged on the seat frame 312 and a second connecting rod 315 rotatably connected with the first sliding member 313, the second connecting rod 315 is rotatably installed on the push rod 311;

[0106] The linkage folding assembly further comprises a first connecting rod 314, one end of the first connecting rod 314 is rotatably connected with the base 10, the other end of the first connecting rod 314 is rotatably connected with the first sliding member 313;

[0107] The first sliding member 313 is used to drive the middle connecting rod 33 to move when the seat frame 312 moves;

[0108] The middle connecting rod 33 is rotatably connected with the first connecting rod 314, the first sliding member 313 drives the middle connecting rod 33 to move through the first connecting rod 314.

[0109] In the above embodiment, the first connecting rod 314 and the base 10 and the first sliding member 313 can be hingedly connected, and the second connecting rod 315 and the push rod 311 and the first sliding member 313 can be hingedly connected. The push rod 311, the second connecting rod 315, the first sliding member 313 and the seat frame 312 can jointly form a first swing guide rod mechanism, and the seat frame 312, the first sliding member 313, the first connecting rod 314 and the base 10 jointly form a second swing guide rod mechanism. When the push rod 311 is folded towards the base 10, the end of the second connecting rod 315 away from the push rod 311 moves towards the push rod 311, which drives the first sliding member 313 to slide along the seat frame 312 away from the base 10, and when the first sliding member 313 slides, the seat frame 312 swings around the end hingedly connected to the base 10 to fold towards the base 10, thereby achieving the folding of the first swing guide rod mechanism. When the first swing guide rod mechanism is folded, the seat frame 312 swings towards the base 10 to fold, and the first sliding member 313 swings along the seat frame 312, which drives the end of the first connecting rod 314 hingedly connected to the first sliding member 313 to move towards the end of the seat frame 312 away from the base 10, and since the end of the seat frame 312 away from the base 10 is folded towards the base 10, the first connecting rod 314 is also folded towards the base 10, thereby achieving the folding of the frame body 31 on the base 10.

[0110] Referring to Figure 1 、 Figure 4 In the embodiment of the present application, the seat frame 312 includes a pair of seat rods 3121, and the first sliding member 313 includes a sleeve and a sliding connecting rod connected between the sleeves, which are respectively sleeved on the pair of seat rods 3121.

[0111] In the above embodiment, the push rod 311 and the linkage folding assembly are also provided with a pair of each, and the two push rods 311 are arranged in the left-right direction of the base 10, and the two linkage folding assemblies are arranged in the left-right direction of the base 10. The frame assembly further includes a first connecting rod 34, a second connecting rod and a transmission rod 316, the first connecting rod 34 connects the two push rods 311, and the transmission rod 316 connects the first connecting rods 314 of the two frame bodies 31.

[0112] The left-right direction of the base 10 can be the direction of the two sides of the advancing direction of the folding vehicle 100, the two groups of frame bodies 31 are arranged on the two sides of the advancing direction of the folding vehicle 100, each seat rod 3121 is connected with each push rod 311 through a corresponding linkage folding assembly, when one push rod 311 is folded, the seat rod 3121 can be driven to fold through the linkage folding assembly, and the two seat rods 3121 are connected through the first sliding piece 313, when one seat rod 3121 moves, the other seat rod 3121 can be driven to move through the first sliding piece 313, so that the other push rod 311 moves, so that the two push rods 311 and the two seat rods 3121 realize linkage, when the push rod 311 is unfolded, the seat frame 312 can be driven to unfold, and when the push rod 311 is folded, the seat frame 312 can be driven to fold.

[0113] Of course, in other embodiments, the seat frame 312 can also include three seat rods 3121, the first sliding piece 313 can also include sleeve pipes respectively sleeved on the three seat rods 3121 and sliding connecting rods connecting adjacent sleeve pipes, wherein two seat rods 3121 can be arranged on the two sides of the advancing direction of the folding vehicle 100, and the other seat rod 3121 can be arranged between the two seat rods 3121, and the three seat rods 3121 are connected through linkage structures. The related structure of the three seat rods 3121 can refer to the arrangement mode of the pair of seat rods 3121 described above, and details are not repeated here.

[0114] When the folding vehicle 100 is configured as a child vehicle, the two seat frames 312 and the two push rods 311 enclose a placing space for placing a child seat. When the frame body 31 is unfolded, the seat frame 312 and the push rod 311 are arranged at an included angle, so that the capacity of the placing space is increased.

[0115] To further increase the capacity of the placing space, when the frame body 31 is in the unfolded state, the two seat frames 312 can swing in the left-right direction of the base 10 (the two sides of the advancing direction of the folding vehicle 100), so that the two seat frames 312 swing and unfold towards the two sides of the base 10, and the two seat frames 312 are arranged at an included angle, so that the capacity of the placing space is further increased.

[0116] The related arrangement is as follows, and as shown in Figure 1 、 Figure 4 In an embodiment, the seat frame 312 further includes a base connecting rod 3122 connecting the seat rod 3121 and the base 10, the base connecting rod 3122 is rotatably installed on the base 10 along a first rotation shaft, and the first rotation shaft is arranged in extension along a first direction.

[0117] The seat rods 3121 are pivotally connected to the base connecting rods 3122 by second pivots extending in a direction perpendicular to the first pivots, so that the two seat rods 3121 can move towards each other or away from each other.

[0118] In the process of switching the frame structure 30 from the unfolded state to the folded state, the two seat rods 3121 are folded towards each other.

[0119] The first direction can be the left-right direction of the base 10, i.e. the two sides of the forward direction of the folding vehicle 100. When the frame body 31 is in the folded state, the seat rods 3121 swing to the inner side of the base 10 along the left-right direction of the base 10, and the base connecting rods 3122 swing to fit the base 10 along the up-down direction of the base 10. The seat rods 3121 and the base connecting rods 3122 can be hingedly connected, and the seat rods 3121 can swing in the left-right direction relative to the base connecting rods 3122. The base connecting rods 3122 and the base 10 can be hingedly connected, and the base connecting rods 3122 can swing in the up-down direction relative to the base 10. In this way, when the frame body 31 is in the unfolded state, the seat rods 3121 as the main components of the seat frame 312 can swing towards the outer side of the base 10, and the seat rods 3121 as the main components of the seat frame 312 can swing up and down synchronously with the up-down swinging of the base connecting rods 3122, so that the seat rods 3121 can be unfolded or folded.

[0120] In the above embodiment, to avoid interference between the two seat rods 3121 and the first sliding member 313 during the movement of the two seat rods 3121 towards or away from each other, as shown in Figure 5 The sleeve of the first sliding member 313 is provided with an elongated hole 313a, the cross section of the elongated hole 313a extends along the left-right direction of the base 10, and the seat frame 312 is arranged in the elongated hole 313a along the length direction and can swing in the left-right direction of the base 10.

[0121] In the above embodiment, since the long hole 313a has a cross section extending along both sides of the folding vehicle 100 in the left-right direction of the base 10, the seat rod 3121 can not only slide along the long hole 313a to enable the seat rod 3121 to fold in linkage with the push rod 311, but also swing along the long hole 313a. When the frame body 31 is unfolded, the seat rod 3121 can swing along the long hole 313a to unfold to the outside of the base 10, so that the two seat rods 3121 are arranged at an angle to increase the capacity of the space enclosed by the two seat rods 3121 and the two push rods 311. When the frame body 31 is folded toward the base 10, the seat rod 3121 can swing along the long hole 313a to fold to the inside of the base 10. When the seat rod 3121 is folded on the base 10, the seat rods 3121 on both sides of the base 10 can be prevented from protruding.

[0122] Of course, in other embodiments, the seat rod 3121 and the base 10 can also be connected by a universal joint to enable the seat rod 3121 to swing in the left-right direction and in the up-down direction when moving, which is not limited herein.

[0123] Referring to Figure 4 In an embodiment, when the frame structure 30 is in the folded state, the seat rod 3121 and the push rod 311 are stacked on the base 10, and the seat rod 3121 is located on the inside of the push rod 311, and the seat rod 3121 and the push rod 311 are located on the same plane away from the base 10.

[0124] In this way, when the frame structure 30 is in the folded state, not only are the parts of the frame structure 30 stacked on the base 10, but also the seat rod 3121 and the push rod 311 that constitute the frame structure 30 are located on the same plane away from the base 10. Thus, when the folding vehicle 100 is folded, the various structures on the top of the folding vehicle 100 are located on the same plane, and the top surface of the folding vehicle 100 is also planar, so that the thickness of the folding vehicle 100 after folding is smaller, and the overall size is smaller.

[0125] Referring to Figure 1 , Figure 6 , Figure 8 In an embodiment, the push rod 311 includes multiple push rod segments connected in an extendable manner, and the push rod 311 is provided with a handle 311a at one end away from the base 10. When the frame body 31 is in the folded state, the handle 311a is close to the base 10 and located within the outer contour of the base 10.

[0126] The handle 311a can be arranged at an angle with the push rod 311, and is used for a human body to hold and push the folding vehicle 100 when the folding vehicle 100 is unfolded. The handle 311a can be provided with anti-skid lines to facilitate increasing the anti-skid performance when holding. The push rod 311 can be provided in a cylindrical shape, and the plurality of push rod segments constituting the push rod 311 can not only realize relative telescopic movement, but also realize relative rotating movement. In this way, when the folding vehicle 100 is unfolded, the handle 311a can be adjusted to a position suitable for holding, for example, the handle 311a is adjusted to a position facing the human body, and when the folding vehicle 100 is folded, the handle 311a can be adjusted to a position facing the inside of the base 10, so that the handle 311a can be accommodated inside the base 10 after the frame 31 is folded, and the handle 311a is prevented from being exposed.

[0127] Of course, in other embodiments, the overall shape of the push rod 311 can also be provided in a square column shape or a triangular column shape, and the specific shape is not limited.

[0128] Optionally, one end of the push rod segment close to the base 10 is provided with an elastic clamping piece, and the other end of the push rod segment away from the base 10 is provided with an elastic clamping groove. The push rod 311 has an elongated state, and when the push rod 311 is in the elongated state, the elastic clamping piece of the push rod segment is clamped and connected with the elastic clamping groove of the adjacent push rod segment.

[0129] The elastic clamping piece can be configured as a clamping convex and a spring, the clamping convex is telescopically arranged on the push rod segment, and the spring connects the clamping convex and the inner wall of the push rod segment. When the push rod segment is retracted into another push rod segment, the elastic clamping convex abuts against the inner wall of the other push rod segment. When the push rod segment is extended along the other push rod segment, the elastic clamping convex slides along the inner wall of the other push rod segment and is clamped into the elastic clamping groove, so that the push rod 311 can realize stable connection between the adjacent two push rod segments after being elongated. The stability of the folding vehicle 100 when being pushed is ensured.

[0130] When the frame 31 is arranged, since the push rod 311 also has the function of pushing the folding vehicle 100 to walk, the part where the push rod 311 is connected with the base 10 is arranged close to the rear of the base 10. At the same time, since the push rod 311 is arranged at an angle with the seat frame 312, there is a linkage movement relationship between the push rod 311 and the seat frame 312, so the installation position of the seat frame 312 on the base 10 is also arranged closer to the rear of the base 10. In this way, when a child seat is arranged in a placing space and is used for a child to sit and lean, the center of the whole vehicle is closer to the rear end of the folding vehicle, and in order to ensure the stability of the folding vehicle when being used, the first caster wheel 22 is optionally arranged to protrude rearward of the base 10 when the folding vehicle is unfolded and used. In this way, the first caster wheel 22 is located rearward of the base 10 when the folding vehicle is unfolded and used, and the stability of supporting the whole vehicle can be improved.

[0131] The above merely illustrates the exemplary embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation or direct / indirect application in other related technical fields under the technical concept of the present application and by using the content of the present application specification and drawings are included in the patent protection scope of the present application.

Claims

1. A folding vehicle, characterized by, The utility model relates to a stroller, comprising: a base; a caster assembly including a pair of first casters disposed on the base; a frame structure including a frame body disposed on the base and a transmission assembly transmissionally connected between the first casters and the frame body; the frame body has an unfolded state and a folded state, and the first casters have a first position in which the first casters are relatively far apart and a second position in which the first casters are relatively close together; during a transition of the frame structure from the unfolded state to the folded state, the frame body drives the first casters to transition from the first position to the second position via the transmission assembly.

2. The foldable vehicle of claim 1, wherein, the frame body is disposed above the base and is folded towards the base during the transition from the unfolded state to the folded state; the transmission assembly includes a transmission member movably disposed below the base and an intermediate link, the intermediate link is engaged with the transmission member and the frame body, respectively; during the transition of the frame structure from the unfolded state to the folded state, the frame body drives the transmission member to move via the intermediate link, and the transmission member is engaged with the first casters to drive the first casters to move towards the second position.

3. The foldable vehicle of claim 2, wherein, the transmission assembly further includes two swing members and two second sliding members, the second sliding members are connected with the first casters, respectively, and are slidably disposed on the base along the moving direction of the first casters; the swing members are rotatably installed on the base via first rotating portions, the swing members have first movable portions rotatably connected with the transmission member and second movable portions rotatably connected with the second sliding members; the transmission member is slidably disposed on the base and is used to drive the swing members to rotate around the first rotating portions when sliding, so that the swing members drive the second sliding members to slide.

4. The foldable vehicle of claim 3, wherein, the first movable portions include first waist-shaped holes disposed on the swing members, the second movable portions include second waist-shaped holes disposed on the swing members, the transmission member and the swing members are relatively slidable along the first waist-shaped holes, and the second sliding members and the swing members are relatively slidable along the second waist-shaped holes.

5. The foldable vehicle of claim 3, wherein, when the first casters are in the first position, the first casters are relatively located outside the outer contour of the base, and when the first casters are in the second position, the first casters are relatively located inside the outer contour of the base; the first casters are rotatably installed on the second sliding members along the circumferential direction of the second sliding members, and when the first casters are in the second position, the first casters can be rotated towards the base to make the first casters have a first storage state in which the first casters are stacked on the bottom of the base.

6. The foldable vehicle of claim 5, wherein, the bottom of the base is provided with a first accommodating groove, and the first casters can be stored in the first accommodating groove when the first casters are in the first storage state; the first accommodating groove is concavely disposed on the bottom of the base and is matched with the first casters, and after the first casters are stored in the first accommodating groove, the first casters do not protrude out of the bottom of the base away from the lower surface of the frame body.

7. The foldable vehicle of claim 2, wherein, the frame body includes a push rod and a seat frame, the push rod and the seat frame are rotatably installed on the base, and during the transition of the frame structure from the unfolded state to the folded state, the push rod and the seat frame are folded towards the base; The seat frame is engaged with the intermediate link to drive the transmission member to move through the intermediate link when the seat frame is moved towards the base; And / or, the push rod is engaged with the intermediate link to drive the transmission member to move through the intermediate link when the push rod is moved towards the base.

8. The foldable vehicle of claim 7, wherein, The frame further comprises a linkage folding assembly engaged with the push rod and the seat frame to link the push rod and the seat frame when folding; The linkage folding assembly comprises a first sliding member slidingly arranged on the seat frame and a second link rotatably connected with the first sliding member, the second link being rotatably mounted on the push rod; The linkage folding assembly further comprises a first link, one end of the first link being rotatably connected with the base, the other end of the first link being rotatably connected with the first sliding member; The first sliding member is configured to drive the intermediate link to move when the seat frame is moved; The intermediate link is rotatably connected with the first link, the first sliding member driving the intermediate link to move through the first link.

9. The foldable vehicle of claim 8, wherein, The seat frame comprises a pair of seat rods, the first sliding member comprising a sleeve arranged on each of the pair of seat rods and a sliding connecting rod connected between the pair of sleeves; The seat frame further comprises a base connecting rod connecting the seat rods with the base, the base connecting rod being rotatably mounted on the base along a first rotation axis, the first rotation axis extending along a first direction; The seat rods are rotatably mounted on the base connecting rod along a second rotation axis, the second rotation axis extending along a direction perpendicular to the first rotation axis, so that the two seat rods can be moved towards each other or away from each other; During the process of switching the frame structure from the unfolded state to the folded state, the two seat rods are folded towards each other.

10. The foldable vehicle of claim 9, wherein, When the frame structure is in the folded state, the seat rods and the push rod are all stacked on the base, and the seat rods are located inside the push rod, and the seat rods and the push rod are located on the same plane away from the base.

11. The foldable vehicle of claim 9, wherein, The caster assembly further comprises a second caster, the second caster being spaced apart from the first caster along a second direction, the second caster being movably arranged on the base, the second caster having a second storage state of being stacked on the bottom of the base and a second walking state for the folding vehicle to walk, wherein the first direction and the second direction are arranged intersectingly; The bottom of the base is further provided with a second accommodating groove for accommodating the second caster in the second storage state.

12. The foldable vehicle of claim 7, wherein, The push rod comprises a plurality of push rod segments connected in an extendable manner, the push rod being provided with a handle at an end away from the base, the handle being moved towards the base and located within the outer contour of the base when the frame is in the folded state.

13. The foldable vehicle of any one of claims 1 to 12, wherein, The folding vehicle is configured as a child vehicle.

Images